From adf8b37bafc1495393201a2ae4235846371870d0 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Thu, 12 Feb 2009 13:56:34 +0100 Subject: [ARM] 5386/2: unwind: Add Makefile and Kconfig entries for ARM stack unwinding This patch also makes the frame pointer default to y only if !ARM_UNWIND. LOCKDEP no longer selects FRAME_POINTER if ARM_UNWIND is enabled. Signed-off-by: Catalin Marinas Signed-off-by: Russell King --- arch/arm/Makefile | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/arm/Makefile') diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 24e0f0187697..e7ef876e574b 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -85,6 +85,10 @@ else CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,) endif +ifeq ($(CONFIG_ARM_UNWIND),y) +CFLAGS_ABI +=-funwind-tables +endif + # Need -Uarm for gcc < 3.x KBUILD_CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm KBUILD_AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float -- cgit v1.2.3 From bd5ce4332328c1fe473690a86b2e6a4157be038f Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 20 Jan 2009 12:06:01 +0800 Subject: [ARM] pxa: introduce plat-pxa for PXA common code and add DMA support 1. introduce folder of 'arch/arm/plat-pxa' for common code across different PXA processor families 2. initially moved DMA code into plat-pxa 3. common code in moved into , new processors should implement its own , provide the following required definitions and '#include ' in the end: - DMAC_REGS_VIRT for mapped virtual address of the DMA registers' physical I/O memory Signed-off-by: Eric Miao --- arch/arm/Kconfig | 5 ++ arch/arm/Makefile | 1 + arch/arm/mach-pxa/Makefile | 2 +- arch/arm/mach-pxa/dma.c | 144 ----------------------------------- arch/arm/mach-pxa/include/mach/dma.h | 83 +------------------- arch/arm/plat-pxa/Kconfig | 3 + arch/arm/plat-pxa/Makefile | 6 ++ arch/arm/plat-pxa/dma.c | 144 +++++++++++++++++++++++++++++++++++ arch/arm/plat-pxa/include/plat/dma.h | 85 +++++++++++++++++++++ 9 files changed, 246 insertions(+), 227 deletions(-) delete mode 100644 arch/arm/mach-pxa/dma.c create mode 100644 arch/arm/plat-pxa/Kconfig create mode 100644 arch/arm/plat-pxa/Makefile create mode 100644 arch/arm/plat-pxa/dma.c create mode 100644 arch/arm/plat-pxa/include/plat/dma.h (limited to 'arch/arm/Makefile') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 12abdd43201f..5ba00358e805 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -481,6 +481,7 @@ config ARCH_PXA select GENERIC_TIME select GENERIC_CLOCKEVENTS select TICK_ONESHOT + select PLAT_PXA help Support for Intel/Marvell's PXA2xx/PXA3xx processor line. @@ -618,6 +619,7 @@ source "arch/arm/mach-loki/Kconfig" source "arch/arm/mach-mv78xx0/Kconfig" source "arch/arm/mach-pxa/Kconfig" +source "arch/arm/plat-pxa/Kconfig" source "arch/arm/mach-sa1100/Kconfig" @@ -687,6 +689,9 @@ config PLAT_IOP config PLAT_ORION bool +config PLAT_PXA + bool + source arch/arm/mm/Kconfig config IWMMXT diff --git a/arch/arm/Makefile b/arch/arm/Makefile index e7ef876e574b..897f2830bc4d 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -109,6 +109,7 @@ ifeq ($(CONFIG_ARCH_SA1100),y) textofs-$(CONFIG_SA1111) := 0x00208000 endif machine-$(CONFIG_ARCH_PXA) := pxa + plat-$(CONFIG_PLAT_PXA) := pxa machine-$(CONFIG_ARCH_L7200) := l7200 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000 diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile index fc96e7d454b1..70b46570c5cf 100644 --- a/arch/arm/mach-pxa/Makefile +++ b/arch/arm/mach-pxa/Makefile @@ -3,7 +3,7 @@ # # Common support (must be linked before board specific support) -obj-y += clock.o devices.o generic.o irq.o dma.o \ +obj-y += clock.o devices.o generic.o irq.o \ time.o gpio.o reset.o obj-$(CONFIG_PM) += pm.o sleep.o standby.o diff --git a/arch/arm/mach-pxa/dma.c b/arch/arm/mach-pxa/dma.c deleted file mode 100644 index 01217e01f7d2..000000000000 --- a/arch/arm/mach-pxa/dma.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * linux/arch/arm/mach-pxa/dma.c - * - * PXA DMA registration and IRQ dispatching - * - * Author: Nicolas Pitre - * Created: Nov 15, 2001 - * Copyright: MontaVista Software Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -struct dma_channel { - char *name; - pxa_dma_prio prio; - void (*irq_handler)(int, void *); - void *data; -}; - -static struct dma_channel *dma_channels; -static int num_dma_channels; - -int pxa_request_dma (char *name, pxa_dma_prio prio, - void (*irq_handler)(int, void *), - void *data) -{ - unsigned long flags; - int i, found = 0; - - /* basic sanity checks */ - if (!name || !irq_handler) - return -EINVAL; - - local_irq_save(flags); - - do { - /* try grabbing a DMA channel with the requested priority */ - for (i = 0; i < num_dma_channels; i++) { - if ((dma_channels[i].prio == prio) && - !dma_channels[i].name) { - found = 1; - break; - } - } - /* if requested prio group is full, try a hier priority */ - } while (!found && prio--); - - if (found) { - DCSR(i) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR; - dma_channels[i].name = name; - dma_channels[i].irq_handler = irq_handler; - dma_channels[i].data = data; - } else { - printk (KERN_WARNING "No more available DMA channels for %s\n", name); - i = -ENODEV; - } - - local_irq_restore(flags); - return i; -} - -void pxa_free_dma (int dma_ch) -{ - unsigned long flags; - - if (!dma_channels[dma_ch].name) { - printk (KERN_CRIT - "%s: trying to free channel %d which is already freed\n", - __func__, dma_ch); - return; - } - - local_irq_save(flags); - DCSR(dma_ch) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR; - dma_channels[dma_ch].name = NULL; - local_irq_restore(flags); -} - -static irqreturn_t dma_irq_handler(int irq, void *dev_id) -{ - int i, dint = DINT; - - for (i = 0; i < num_dma_channels; i++) { - if (dint & (1 << i)) { - struct dma_channel *channel = &dma_channels[i]; - if (channel->name && channel->irq_handler) { - channel->irq_handler(i, channel->data); - } else { - /* - * IRQ for an unregistered DMA channel: - * let's clear the interrupts and disable it. - */ - printk (KERN_WARNING "spurious IRQ for DMA channel %d\n", i); - DCSR(i) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR; - } - } - } - return IRQ_HANDLED; -} - -int __init pxa_init_dma(int irq, int num_ch) -{ - int i, ret; - - dma_channels = kzalloc(sizeof(struct dma_channel) * num_ch, GFP_KERNEL); - if (dma_channels == NULL) - return -ENOMEM; - - /* dma channel priorities on pxa2xx processors: - * ch 0 - 3, 16 - 19 <--> (0) DMA_PRIO_HIGH - * ch 4 - 7, 20 - 23 <--> (1) DMA_PRIO_MEDIUM - * ch 8 - 15, 24 - 31 <--> (2) DMA_PRIO_LOW - */ - for (i = 0; i < num_ch; i++) { - DCSR(i) = 0; - dma_channels[i].prio = min((i & 0xf) >> 2, DMA_PRIO_LOW); - } - - ret = request_irq(irq, dma_irq_handler, IRQF_DISABLED, "DMA", NULL); - if (ret) { - printk (KERN_CRIT "Wow! Can't register IRQ for DMA\n"); - kfree(dma_channels); - return ret; - } - - num_dma_channels = num_ch; - return 0; -} - -EXPORT_SYMBOL(pxa_request_dma); -EXPORT_SYMBOL(pxa_free_dma); diff --git a/arch/arm/mach-pxa/include/mach/dma.h b/arch/arm/mach-pxa/include/mach/dma.h index b0812f59d3f8..5bd55894a48d 100644 --- a/arch/arm/mach-pxa/include/mach/dma.h +++ b/arch/arm/mach-pxa/include/mach/dma.h @@ -16,87 +16,6 @@ /* DMA Controller Registers Definitions */ #define DMAC_REGS_VIRT io_p2v(0x40000000) -#define DMAC_REG(x) (*((volatile u32 *)(DMAC_REGS_VIRT + (x)))) - -#define DCSR(n) DMAC_REG((n) << 2) -#define DALGN DMAC_REG(0x00a0) /* DMA Alignment Register */ -#define DINT DMAC_REG(0x00f0) /* DMA Interrupt Register */ -#define DDADR(n) DMAC_REG(0x0200 + ((n) << 4)) -#define DSADR(n) DMAC_REG(0x0204 + ((n) << 4)) -#define DTADR(n) DMAC_REG(0x0208 + ((n) << 4)) -#define DCMD(n) DMAC_REG(0x020c + ((n) << 4)) -#define DRCMR(n) DMAC_REG((((n) < 64) ? 0x0100 : 0x1100) + \ - (((n) & 0x3f) << 2)) - -#define DCSR_RUN (1 << 31) /* Run Bit (read / write) */ -#define DCSR_NODESC (1 << 30) /* No-Descriptor Fetch (read / write) */ -#define DCSR_STOPIRQEN (1 << 29) /* Stop Interrupt Enable (read / write) */ -#define DCSR_REQPEND (1 << 8) /* Request Pending (read-only) */ -#define DCSR_STOPSTATE (1 << 3) /* Stop State (read-only) */ -#define DCSR_ENDINTR (1 << 2) /* End Interrupt (read / write) */ -#define DCSR_STARTINTR (1 << 1) /* Start Interrupt (read / write) */ -#define DCSR_BUSERR (1 << 0) /* Bus Error Interrupt (read / write) */ - -#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx) -#define DCSR_EORIRQEN (1 << 28) /* End of Receive Interrupt Enable (R/W) */ -#define DCSR_EORJMPEN (1 << 27) /* Jump to next descriptor on EOR */ -#define DCSR_EORSTOPEN (1 << 26) /* STOP on an EOR */ -#define DCSR_SETCMPST (1 << 25) /* Set Descriptor Compare Status */ -#define DCSR_CLRCMPST (1 << 24) /* Clear Descriptor Compare Status */ -#define DCSR_CMPST (1 << 10) /* The Descriptor Compare Status */ -#define DCSR_EORINTR (1 << 9) /* The end of Receive */ -#endif - -#define DRCMR_MAPVLD (1 << 7) /* Map Valid (read / write) */ -#define DRCMR_CHLNUM 0x1f /* mask for Channel Number (read / write) */ - -#define DDADR_DESCADDR 0xfffffff0 /* Address of next descriptor (mask) */ -#define DDADR_STOP (1 << 0) /* Stop (read / write) */ - -#define DCMD_INCSRCADDR (1 << 31) /* Source Address Increment Setting. */ -#define DCMD_INCTRGADDR (1 << 30) /* Target Address Increment Setting. */ -#define DCMD_FLOWSRC (1 << 29) /* Flow Control by the source. */ -#define DCMD_FLOWTRG (1 << 28) /* Flow Control by the target. */ -#define DCMD_STARTIRQEN (1 << 22) /* Start Interrupt Enable */ -#define DCMD_ENDIRQEN (1 << 21) /* End Interrupt Enable */ -#define DCMD_ENDIAN (1 << 18) /* Device Endian-ness. */ -#define DCMD_BURST8 (1 << 16) /* 8 byte burst */ -#define DCMD_BURST16 (2 << 16) /* 16 byte burst */ -#define DCMD_BURST32 (3 << 16) /* 32 byte burst */ -#define DCMD_WIDTH1 (1 << 14) /* 1 byte width */ -#define DCMD_WIDTH2 (2 << 14) /* 2 byte width (HalfWord) */ -#define DCMD_WIDTH4 (3 << 14) /* 4 byte width (Word) */ -#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ - -/* - * Descriptor structure for PXA's DMA engine - * Note: this structure must always be aligned to a 16-byte boundary. - */ - -typedef struct pxa_dma_desc { - volatile u32 ddadr; /* Points to the next descriptor + flags */ - volatile u32 dsadr; /* DSADR value for the current transfer */ - volatile u32 dtadr; /* DTADR value for the current transfer */ - volatile u32 dcmd; /* DCMD value for the current transfer */ -} pxa_dma_desc; - -typedef enum { - DMA_PRIO_HIGH = 0, - DMA_PRIO_MEDIUM = 1, - DMA_PRIO_LOW = 2 -} pxa_dma_prio; - -/* - * DMA registration - */ - -int __init pxa_init_dma(int irq, int num_ch); - -int pxa_request_dma (char *name, - pxa_dma_prio prio, - void (*irq_handler)(int, void *), - void *data); - -void pxa_free_dma (int dma_ch); +#include #endif /* _ASM_ARCH_DMA_H */ diff --git a/arch/arm/plat-pxa/Kconfig b/arch/arm/plat-pxa/Kconfig new file mode 100644 index 000000000000..b158e98038ed --- /dev/null +++ b/arch/arm/plat-pxa/Kconfig @@ -0,0 +1,3 @@ +if PLAT_PXA + +endif diff --git a/arch/arm/plat-pxa/Makefile b/arch/arm/plat-pxa/Makefile new file mode 100644 index 000000000000..dcc3ceaf717f --- /dev/null +++ b/arch/arm/plat-pxa/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for code common across different PXA processor families +# + +obj-y := dma.o + diff --git a/arch/arm/plat-pxa/dma.c b/arch/arm/plat-pxa/dma.c new file mode 100644 index 000000000000..70aeee407f7d --- /dev/null +++ b/arch/arm/plat-pxa/dma.c @@ -0,0 +1,144 @@ +/* + * linux/arch/arm/plat-pxa/dma.c + * + * PXA DMA registration and IRQ dispatching + * + * Author: Nicolas Pitre + * Created: Nov 15, 2001 + * Copyright: MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +struct dma_channel { + char *name; + pxa_dma_prio prio; + void (*irq_handler)(int, void *); + void *data; +}; + +static struct dma_channel *dma_channels; +static int num_dma_channels; + +int pxa_request_dma (char *name, pxa_dma_prio prio, + void (*irq_handler)(int, void *), + void *data) +{ + unsigned long flags; + int i, found = 0; + + /* basic sanity checks */ + if (!name || !irq_handler) + return -EINVAL; + + local_irq_save(flags); + + do { + /* try grabbing a DMA channel with the requested priority */ + for (i = 0; i < num_dma_channels; i++) { + if ((dma_channels[i].prio == prio) && + !dma_channels[i].name) { + found = 1; + break; + } + } + /* if requested prio group is full, try a hier priority */ + } while (!found && prio--); + + if (found) { + DCSR(i) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR; + dma_channels[i].name = name; + dma_channels[i].irq_handler = irq_handler; + dma_channels[i].data = data; + } else { + printk (KERN_WARNING "No more available DMA channels for %s\n", name); + i = -ENODEV; + } + + local_irq_restore(flags); + return i; +} + +void pxa_free_dma (int dma_ch) +{ + unsigned long flags; + + if (!dma_channels[dma_ch].name) { + printk (KERN_CRIT + "%s: trying to free channel %d which is already freed\n", + __func__, dma_ch); + return; + } + + local_irq_save(flags); + DCSR(dma_ch) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR; + dma_channels[dma_ch].name = NULL; + local_irq_restore(flags); +} + +static irqreturn_t dma_irq_handler(int irq, void *dev_id) +{ + int i, dint = DINT; + + for (i = 0; i < num_dma_channels; i++) { + if (dint & (1 << i)) { + struct dma_channel *channel = &dma_channels[i]; + if (channel->name && channel->irq_handler) { + channel->irq_handler(i, channel->data); + } else { + /* + * IRQ for an unregistered DMA channel: + * let's clear the interrupts and disable it. + */ + printk (KERN_WARNING "spurious IRQ for DMA channel %d\n", i); + DCSR(i) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR; + } + } + } + return IRQ_HANDLED; +} + +int __init pxa_init_dma(int irq, int num_ch) +{ + int i, ret; + + dma_channels = kzalloc(sizeof(struct dma_channel) * num_ch, GFP_KERNEL); + if (dma_channels == NULL) + return -ENOMEM; + + /* dma channel priorities on pxa2xx processors: + * ch 0 - 3, 16 - 19 <--> (0) DMA_PRIO_HIGH + * ch 4 - 7, 20 - 23 <--> (1) DMA_PRIO_MEDIUM + * ch 8 - 15, 24 - 31 <--> (2) DMA_PRIO_LOW + */ + for (i = 0; i < num_ch; i++) { + DCSR(i) = 0; + dma_channels[i].prio = min((i & 0xf) >> 2, DMA_PRIO_LOW); + } + + ret = request_irq(irq, dma_irq_handler, IRQF_DISABLED, "DMA", NULL); + if (ret) { + printk (KERN_CRIT "Wow! Can't register IRQ for DMA\n"); + kfree(dma_channels); + return ret; + } + + num_dma_channels = num_ch; + return 0; +} + +EXPORT_SYMBOL(pxa_request_dma); +EXPORT_SYMBOL(pxa_free_dma); diff --git a/arch/arm/plat-pxa/include/plat/dma.h b/arch/arm/plat-pxa/include/plat/dma.h new file mode 100644 index 000000000000..a7b91dc06852 --- /dev/null +++ b/arch/arm/plat-pxa/include/plat/dma.h @@ -0,0 +1,85 @@ +#ifndef __PLAT_DMA_H +#define __PLAT_DMA_H + +#define DMAC_REG(x) (*((volatile u32 *)(DMAC_REGS_VIRT + (x)))) + +#define DCSR(n) DMAC_REG((n) << 2) +#define DALGN DMAC_REG(0x00a0) /* DMA Alignment Register */ +#define DINT DMAC_REG(0x00f0) /* DMA Interrupt Register */ +#define DDADR(n) DMAC_REG(0x0200 + ((n) << 4)) +#define DSADR(n) DMAC_REG(0x0204 + ((n) << 4)) +#define DTADR(n) DMAC_REG(0x0208 + ((n) << 4)) +#define DCMD(n) DMAC_REG(0x020c + ((n) << 4)) +#define DRCMR(n) DMAC_REG((((n) < 64) ? 0x0100 : 0x1100) + \ + (((n) & 0x3f) << 2)) + +#define DCSR_RUN (1 << 31) /* Run Bit (read / write) */ +#define DCSR_NODESC (1 << 30) /* No-Descriptor Fetch (read / write) */ +#define DCSR_STOPIRQEN (1 << 29) /* Stop Interrupt Enable (read / write) */ +#define DCSR_REQPEND (1 << 8) /* Request Pending (read-only) */ +#define DCSR_STOPSTATE (1 << 3) /* Stop State (read-only) */ +#define DCSR_ENDINTR (1 << 2) /* End Interrupt (read / write) */ +#define DCSR_STARTINTR (1 << 1) /* Start Interrupt (read / write) */ +#define DCSR_BUSERR (1 << 0) /* Bus Error Interrupt (read / write) */ + +#define DCSR_EORIRQEN (1 << 28) /* End of Receive Interrupt Enable (R/W) */ +#define DCSR_EORJMPEN (1 << 27) /* Jump to next descriptor on EOR */ +#define DCSR_EORSTOPEN (1 << 26) /* STOP on an EOR */ +#define DCSR_SETCMPST (1 << 25) /* Set Descriptor Compare Status */ +#define DCSR_CLRCMPST (1 << 24) /* Clear Descriptor Compare Status */ +#define DCSR_CMPST (1 << 10) /* The Descriptor Compare Status */ +#define DCSR_EORINTR (1 << 9) /* The end of Receive */ + +#define DRCMR_MAPVLD (1 << 7) /* Map Valid (read / write) */ +#define DRCMR_CHLNUM 0x1f /* mask for Channel Number (read / write) */ + +#define DDADR_DESCADDR 0xfffffff0 /* Address of next descriptor (mask) */ +#define DDADR_STOP (1 << 0) /* Stop (read / write) */ + +#define DCMD_INCSRCADDR (1 << 31) /* Source Address Increment Setting. */ +#define DCMD_INCTRGADDR (1 << 30) /* Target Address Increment Setting. */ +#define DCMD_FLOWSRC (1 << 29) /* Flow Control by the source. */ +#define DCMD_FLOWTRG (1 << 28) /* Flow Control by the target. */ +#define DCMD_STARTIRQEN (1 << 22) /* Start Interrupt Enable */ +#define DCMD_ENDIRQEN (1 << 21) /* End Interrupt Enable */ +#define DCMD_ENDIAN (1 << 18) /* Device Endian-ness. */ +#define DCMD_BURST8 (1 << 16) /* 8 byte burst */ +#define DCMD_BURST16 (2 << 16) /* 16 byte burst */ +#define DCMD_BURST32 (3 << 16) /* 32 byte burst */ +#define DCMD_WIDTH1 (1 << 14) /* 1 byte width */ +#define DCMD_WIDTH2 (2 << 14) /* 2 byte width (HalfWord) */ +#define DCMD_WIDTH4 (3 << 14) /* 4 byte width (Word) */ +#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ + +/* + * Descriptor structure for PXA's DMA engine + * Note: this structure must always be aligned to a 16-byte boundary. + */ + +typedef struct pxa_dma_desc { + volatile u32 ddadr; /* Points to the next descriptor + flags */ + volatile u32 dsadr; /* DSADR value for the current transfer */ + volatile u32 dtadr; /* DTADR value for the current transfer */ + volatile u32 dcmd; /* DCMD value for the current transfer */ +} pxa_dma_desc; + +typedef enum { + DMA_PRIO_HIGH = 0, + DMA_PRIO_MEDIUM = 1, + DMA_PRIO_LOW = 2 +} pxa_dma_prio; + +/* + * DMA registration + */ + +int __init pxa_init_dma(int irq, int num_ch); + +int pxa_request_dma (char *name, + pxa_dma_prio prio, + void (*irq_handler)(int, void *), + void *data); + +void pxa_free_dma (int dma_ch); + +#endif /* __PLAT_DMA_H */ -- cgit v1.2.3 From 49cbe78637eb0503f45fc9b556ec08918a616534 Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 20 Jan 2009 14:15:18 +0800 Subject: [ARM] pxa: add base support for Marvell's PXA168 processor line MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit """The Marvell® PXA168 processor is the first in a family of application processors targeted at mass market opportunities in computing and consumer devices. It balances high computing and multimedia performance with low power consumption to support extended battery life, and includes a wealth of integrated peripherals to reduce overall BOM cost .... """ See http://www.marvell.com/featured/pxa168.jsp for more information. 1. Marvell Mohawk core is a hybrid of xscale3 and its own ARM core, there are many enhancements like instructions for flushing the whole D-cache, and so on 2. Clock reuses Russell's common clkdev, and added the basic support for UART1/2. 3. Devices are a bit different from the 'mach-pxa' way, the platform devices are now dynamically allocated only when necessary (i.e. when pxa_register_device() is called). Description for each device are stored in an array of 'struct pxa_device_desc'. Now that: a. this array of device description is marked with __initdata and can be freed up system is fully up b. which means board code has to add all needed devices early in his initializing function c. platform specific data can now be marked as __initdata since they are allocated and copied by platform_device_add_data() 4. only the basic UART1/2/3 are added, more devices will come later. Signed-off-by: Jason Chagas Signed-off-by: Eric Miao --- arch/arm/Kconfig | 16 ++ arch/arm/Makefile | 1 + arch/arm/boot/compressed/head.S | 12 + arch/arm/include/asm/cacheflush.h | 8 + arch/arm/include/asm/proc-fns.h | 8 + arch/arm/mach-mmp/Kconfig | 27 ++ arch/arm/mach-mmp/Makefile | 12 + arch/arm/mach-mmp/Makefile.boot | 1 + arch/arm/mach-mmp/aspenite.c | 42 +++ arch/arm/mach-mmp/clock.c | 83 ++++++ arch/arm/mach-mmp/clock.h | 71 +++++ arch/arm/mach-mmp/common.c | 37 +++ arch/arm/mach-mmp/common.h | 11 + arch/arm/mach-mmp/devices.c | 69 +++++ arch/arm/mach-mmp/include/mach/addr-map.h | 34 +++ arch/arm/mach-mmp/include/mach/clkdev.h | 7 + arch/arm/mach-mmp/include/mach/cputype.h | 21 ++ arch/arm/mach-mmp/include/mach/debug-macro.S | 23 ++ arch/arm/mach-mmp/include/mach/devices.h | 27 ++ arch/arm/mach-mmp/include/mach/dma.h | 13 + arch/arm/mach-mmp/include/mach/entry-macro.S | 25 ++ arch/arm/mach-mmp/include/mach/hardware.h | 4 + arch/arm/mach-mmp/include/mach/io.h | 21 ++ arch/arm/mach-mmp/include/mach/irqs.h | 58 ++++ arch/arm/mach-mmp/include/mach/memory.h | 14 + arch/arm/mach-mmp/include/mach/pxa168.h | 23 ++ arch/arm/mach-mmp/include/mach/regs-apbc.h | 53 ++++ arch/arm/mach-mmp/include/mach/regs-apmu.h | 36 +++ arch/arm/mach-mmp/include/mach/regs-icu.h | 31 ++ arch/arm/mach-mmp/include/mach/regs-timers.h | 44 +++ arch/arm/mach-mmp/include/mach/system.h | 21 ++ arch/arm/mach-mmp/include/mach/timex.h | 9 + arch/arm/mach-mmp/include/mach/uncompress.h | 41 +++ arch/arm/mach-mmp/include/mach/vmalloc.h | 5 + arch/arm/mach-mmp/irq.c | 55 ++++ arch/arm/mach-mmp/pxa168.c | 77 +++++ arch/arm/mach-mmp/time.c | 199 +++++++++++++ arch/arm/mm/Kconfig | 15 +- arch/arm/mm/Makefile | 1 + arch/arm/mm/proc-mohawk.S | 416 +++++++++++++++++++++++++++ 40 files changed, 1669 insertions(+), 2 deletions(-) create mode 100644 arch/arm/mach-mmp/Kconfig create mode 100644 arch/arm/mach-mmp/Makefile create mode 100644 arch/arm/mach-mmp/Makefile.boot create mode 100644 arch/arm/mach-mmp/aspenite.c create mode 100644 arch/arm/mach-mmp/clock.c create mode 100644 arch/arm/mach-mmp/clock.h create mode 100644 arch/arm/mach-mmp/common.c create mode 100644 arch/arm/mach-mmp/common.h create mode 100644 arch/arm/mach-mmp/devices.c create mode 100644 arch/arm/mach-mmp/include/mach/addr-map.h create mode 100644 arch/arm/mach-mmp/include/mach/clkdev.h create mode 100644 arch/arm/mach-mmp/include/mach/cputype.h create mode 100644 arch/arm/mach-mmp/include/mach/debug-macro.S create mode 100644 arch/arm/mach-mmp/include/mach/devices.h create mode 100644 arch/arm/mach-mmp/include/mach/dma.h create mode 100644 arch/arm/mach-mmp/include/mach/entry-macro.S create mode 100644 arch/arm/mach-mmp/include/mach/hardware.h create mode 100644 arch/arm/mach-mmp/include/mach/io.h create mode 100644 arch/arm/mach-mmp/include/mach/irqs.h create mode 100644 arch/arm/mach-mmp/include/mach/memory.h create mode 100644 arch/arm/mach-mmp/include/mach/pxa168.h create mode 100644 arch/arm/mach-mmp/include/mach/regs-apbc.h create mode 100644 arch/arm/mach-mmp/include/mach/regs-apmu.h create mode 100644 arch/arm/mach-mmp/include/mach/regs-icu.h create mode 100644 arch/arm/mach-mmp/include/mach/regs-timers.h create mode 100644 arch/arm/mach-mmp/include/mach/system.h create mode 100644 arch/arm/mach-mmp/include/mach/timex.h create mode 100644 arch/arm/mach-mmp/include/mach/uncompress.h create mode 100644 arch/arm/mach-mmp/include/mach/vmalloc.h create mode 100644 arch/arm/mach-mmp/irq.c create mode 100644 arch/arm/mach-mmp/pxa168.c create mode 100644 arch/arm/mach-mmp/time.c create mode 100644 arch/arm/mm/proc-mohawk.S (limited to 'arch/arm/Makefile') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5ba00358e805..fdcd2d54e939 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -478,6 +478,8 @@ config ARCH_PXA select HAVE_CLK select COMMON_CLKDEV select ARCH_REQUIRE_GPIOLIB + select HAVE_CLK + select COMMON_CLKDEV select GENERIC_TIME select GENERIC_CLOCKEVENTS select TICK_ONESHOT @@ -485,6 +487,18 @@ config ARCH_PXA help Support for Intel/Marvell's PXA2xx/PXA3xx processor line. +config ARCH_MMP + bool "Marvell PXA168" + depends on MMU + select HAVE_CLK + select COMMON_CLKDEV + select GENERIC_TIME + select GENERIC_CLOCKEVENTS + select TICK_ONESHOT + select PLAT_PXA + help + Support for Marvell's PXA168 processor line. + config ARCH_RPC bool "RiscPC" select ARCH_ACORN @@ -621,6 +635,8 @@ source "arch/arm/mach-mv78xx0/Kconfig" source "arch/arm/mach-pxa/Kconfig" source "arch/arm/plat-pxa/Kconfig" +source "arch/arm/mach-mmp/Kconfig" + source "arch/arm/mach-sa1100/Kconfig" source "arch/arm/plat-omap/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 897f2830bc4d..95186ef17e17 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -109,6 +109,7 @@ ifeq ($(CONFIG_ARCH_SA1100),y) textofs-$(CONFIG_SA1111) := 0x00208000 endif machine-$(CONFIG_ARCH_PXA) := pxa + machine-$(CONFIG_ARCH_MMP) := mmp plat-$(CONFIG_PLAT_PXA) := pxa machine-$(CONFIG_ARCH_L7200) := l7200 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index d1b678dc120b..d14b827adcd6 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -636,6 +636,18 @@ proc_types: b __armv4_mmu_cache_off b __armv4_mmu_cache_flush + .word 0x56158000 @ PXA168 + .word 0xfffff000 + b __armv4_mmu_cache_on + b __armv4_mmu_cache_off + b __armv5tej_mmu_cache_flush + + .word 0x56056930 + .word 0xff0ffff0 @ PXA935 + b __armv4_mmu_cache_on + b __armv4_mmu_cache_off + b __armv4_mmu_cache_flush + .word 0x56050000 @ Feroceon .word 0xff0f0000 b __armv4_mmu_cache_on diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index 6cbd8fdc9f1f..bfb0cb9aaa97 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -94,6 +94,14 @@ # endif #endif +#if defined(CONFIG_CPU_MOHAWK) +# ifdef _CACHE +# define MULTI_CACHE 1 +# else +# define _CACHE mohawk +# endif +#endif + #if defined(CONFIG_CPU_FEROCEON) # define MULTI_CACHE 1 #endif diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h index db80203b68e0..c6250311550b 100644 --- a/arch/arm/include/asm/proc-fns.h +++ b/arch/arm/include/asm/proc-fns.h @@ -185,6 +185,14 @@ # define CPU_NAME cpu_xsc3 # endif # endif +# ifdef CONFIG_CPU_MOHAWK +# ifdef CPU_NAME +# undef MULTI_CPU +# define MULTI_CPU +# else +# define CPU_NAME cpu_mohawk +# endif +# endif # ifdef CONFIG_CPU_FEROCEON # ifdef CPU_NAME # undef MULTI_CPU diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig new file mode 100644 index 000000000000..b52326763556 --- /dev/null +++ b/arch/arm/mach-mmp/Kconfig @@ -0,0 +1,27 @@ +if ARCH_MMP + +menu "Marvell PXA168 Implmentations" + +config MACH_ASPENITE + bool "Marvell's PXA168 Aspenite Development Board" + select CPU_PXA168 + help + Say 'Y' here if you want to support the Marvell PXA168-based + Aspenite Development Board. + +config MACH_ZYLONITE2 + bool "Marvell's PXA168 Zylonite2 Development Board" + select CPU_PXA168 + help + Say 'Y' here if you want to support the Marvell PXA168-based + Zylonite2 Development Board. + +endmenu + +config CPU_PXA168 + bool + select CPU_MOHAWK + help + Select code specific to PXA168 + +endif diff --git a/arch/arm/mach-mmp/Makefile b/arch/arm/mach-mmp/Makefile new file mode 100644 index 000000000000..0ac7644ec99d --- /dev/null +++ b/arch/arm/mach-mmp/Makefile @@ -0,0 +1,12 @@ +# +# Makefile for Marvell's PXA168 processors line +# + +obj-y += common.o clock.o devices.o irq.o time.o + +# SoC support +obj-$(CONFIG_CPU_PXA168) += pxa168.o + +# board support +obj-$(CONFIG_MACH_ASPENITE) += aspenite.o +obj-$(CONFIG_MACH_ZYLONITE2) += aspenite.o diff --git a/arch/arm/mach-mmp/Makefile.boot b/arch/arm/mach-mmp/Makefile.boot new file mode 100644 index 000000000000..574a4aa8321a --- /dev/null +++ b/arch/arm/mach-mmp/Makefile.boot @@ -0,0 +1 @@ + zreladdr-y := 0x00008000 diff --git a/arch/arm/mach-mmp/aspenite.c b/arch/arm/mach-mmp/aspenite.c new file mode 100644 index 000000000000..e8caf58e004c --- /dev/null +++ b/arch/arm/mach-mmp/aspenite.c @@ -0,0 +1,42 @@ +/* + * linux/arch/arm/mach-mmp/aspenite.c + * + * Support for the Marvell PXA168-based Aspenite and Zylonite2 + * Development Platform. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * publishhed by the Free Software Foundation. + */ + +#include + +#include +#include +#include + +#include "common.h" + +static void __init common_init(void) +{ +} + +MACHINE_START(ASPENITE, "PXA168-based Aspenite Development Platform") + .phys_io = APB_PHYS_BASE, + .boot_params = 0x00000100, + .io_pg_offst = (APB_VIRT_BASE >> 18) & 0xfffc, + .map_io = pxa_map_io, + .init_irq = pxa168_init_irq, + .timer = &pxa168_timer, + .init_machine = common_init, +MACHINE_END + +MACHINE_START(ZYLONITE2, "PXA168-based Zylonite2 Development Platform") + .phys_io = APB_PHYS_BASE, + .boot_params = 0x00000100, + .io_pg_offst = (APB_VIRT_BASE >> 18) & 0xfffc, + .map_io = pxa_map_io, + .init_irq = pxa168_init_irq, + .timer = &pxa168_timer, + .init_machine = common_init, +MACHINE_END diff --git a/arch/arm/mach-mmp/clock.c b/arch/arm/mach-mmp/clock.c new file mode 100644 index 000000000000..2d9cc5a7122f --- /dev/null +++ b/arch/arm/mach-mmp/clock.c @@ -0,0 +1,83 @@ +/* + * linux/arch/arm/mach-mmp/clock.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include "clock.h" + +static void apbc_clk_enable(struct clk *clk) +{ + uint32_t clk_rst; + + clk_rst = APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(clk->fnclksel); + __raw_writel(clk_rst, clk->clk_rst); +} + +static void apbc_clk_disable(struct clk *clk) +{ + __raw_writel(0, clk->clk_rst); +} + +struct clkops apbc_clk_ops = { + .enable = apbc_clk_enable, + .disable = apbc_clk_disable, +}; + +static DEFINE_SPINLOCK(clocks_lock); + +int clk_enable(struct clk *clk) +{ + unsigned long flags; + + spin_lock_irqsave(&clocks_lock, flags); + if (clk->enabled++ == 0) + clk->ops->enable(clk); + spin_unlock_irqrestore(&clocks_lock, flags); + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ + unsigned long flags; + + WARN_ON(clk->enabled == 0); + + spin_lock_irqsave(&clocks_lock, flags); + if (--clk->enabled == 0) + clk->ops->disable(clk); + spin_unlock_irqrestore(&clocks_lock, flags); +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + unsigned long rate; + + if (clk->ops->getrate) + rate = clk->ops->getrate(clk); + else + rate = clk->rate; + + return rate; +} +EXPORT_SYMBOL(clk_get_rate); + +void clks_register(struct clk_lookup *clks, size_t num) +{ + int i; + + for (i = 0; i < num; i++) + clkdev_add(&clks[i]); +} diff --git a/arch/arm/mach-mmp/clock.h b/arch/arm/mach-mmp/clock.h new file mode 100644 index 000000000000..ed967e78e6a8 --- /dev/null +++ b/arch/arm/mach-mmp/clock.h @@ -0,0 +1,71 @@ +/* + * linux/arch/arm/mach-mmp/clock.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include + +struct clkops { + void (*enable)(struct clk *); + void (*disable)(struct clk *); + unsigned long (*getrate)(struct clk *); +}; + +struct clk { + const struct clkops *ops; + + void __iomem *clk_rst; /* clock reset control register */ + int fnclksel; /* functional clock select (APBC) */ + uint32_t enable_val; /* value for clock enable (APMU) */ + unsigned long rate; + int enabled; +}; + +extern struct clkops apbc_clk_ops; + +#define APBC_CLK(_name, _reg, _fnclksel, _rate) \ +struct clk clk_##_name = { \ + .clk_rst = (void __iomem *)APBC_##_reg, \ + .fnclksel = _fnclksel, \ + .rate = _rate, \ + .ops = &apbc_clk_ops, \ +} + +#define APBC_CLK_OPS(_name, _reg, _fnclksel, _rate, _ops) \ +struct clk clk_##_name = { \ + .clk_rst = (void __iomem *)APBC_##_reg, \ + .fnclksel = _fnclksel, \ + .rate = _rate, \ + .ops = _ops, \ +} + +#define APMU_CLK(_name, _reg, _eval, _rate) \ +struct clk clk_##_name = { \ + .clk_rst = (void __iomem *)APMU_##_reg, \ + .enable_val = _eval, \ + .rate = _rate, \ + .ops = &apmu_clk_ops, \ +} + +#define APMU_CLK_OPS(_name, _reg, _eval, _rate, _ops) \ +struct clk clk_##_name = { \ + .clk_rst = (void __iomem *)APMU_##_reg, \ + .enable_val = _eval, \ + .rate = _rate, \ + .ops = _ops, \ +} + +#define INIT_CLKREG(_clk, _devname, _conname) \ + { \ + .clk = _clk, \ + .dev_id = _devname, \ + .con_id = _conname, \ + } + +extern struct clk clk_pxa168_gpio; +extern struct clk clk_pxa168_timers; + +extern void clks_register(struct clk_lookup *, size_t); diff --git a/arch/arm/mach-mmp/common.c b/arch/arm/mach-mmp/common.c new file mode 100644 index 000000000000..e1e66c18b446 --- /dev/null +++ b/arch/arm/mach-mmp/common.c @@ -0,0 +1,37 @@ +/* + * linux/arch/arm/mach-mmp/common.c + * + * Code common to PXA168 processor lines + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include + +#include +#include +#include + +#include "common.h" + +static struct map_desc standard_io_desc[] __initdata = { + { + .pfn = __phys_to_pfn(APB_PHYS_BASE), + .virtual = APB_VIRT_BASE, + .length = APB_PHYS_SIZE, + .type = MT_DEVICE, + }, { + .pfn = __phys_to_pfn(AXI_PHYS_BASE), + .virtual = AXI_VIRT_BASE, + .length = AXI_PHYS_SIZE, + .type = MT_DEVICE, + }, +}; + +void __init pxa_map_io(void) +{ + iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); +} diff --git a/arch/arm/mach-mmp/common.h b/arch/arm/mach-mmp/common.h new file mode 100644 index 000000000000..bf7a6a492de6 --- /dev/null +++ b/arch/arm/mach-mmp/common.h @@ -0,0 +1,11 @@ +#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) + +struct sys_timer; + +extern void timer_init(int irq); + +extern struct sys_timer pxa168_timer; +extern void __init pxa168_init_irq(void); + +extern void __init icu_init_irq(void); +extern void __init pxa_map_io(void); diff --git a/arch/arm/mach-mmp/devices.c b/arch/arm/mach-mmp/devices.c new file mode 100644 index 000000000000..191d9dea8731 --- /dev/null +++ b/arch/arm/mach-mmp/devices.c @@ -0,0 +1,69 @@ +/* + * linux/arch/arm/mach-mmp/devices.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include + +#include +#include + +int __init pxa_register_device(struct pxa_device_desc *desc, + void *data, size_t size) +{ + struct platform_device *pdev; + struct resource res[2 + MAX_RESOURCE_DMA]; + int i, ret = 0, nres = 0; + + pdev = platform_device_alloc(desc->drv_name, desc->id); + if (pdev == NULL) + return -ENOMEM; + + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + memset(res, 0, sizeof(res)); + + if (desc->start != -1ul && desc->size > 0) { + res[nres].start = desc->start; + res[nres].end = desc->start + desc->size - 1; + res[nres].flags = IORESOURCE_MEM; + nres++; + } + + if (desc->irq != NO_IRQ) { + res[nres].start = desc->irq; + res[nres].end = desc->irq; + res[nres].flags = IORESOURCE_IRQ; + nres++; + } + + for (i = 0; i < MAX_RESOURCE_DMA; i++, nres++) { + if (desc->dma[i] == 0) + break; + + res[nres].start = desc->dma[i]; + res[nres].end = desc->dma[i]; + res[nres].flags = IORESOURCE_DMA; + } + + ret = platform_device_add_resources(pdev, res, nres); + if (ret) { + platform_device_put(pdev); + return ret; + } + + if (data && size) { + ret = platform_device_add_data(pdev, data, size); + if (ret) { + platform_device_put(pdev); + return ret; + } + } + + return platform_device_add(pdev); +} diff --git a/arch/arm/mach-mmp/include/mach/addr-map.h b/arch/arm/mach-mmp/include/mach/addr-map.h new file mode 100644 index 000000000000..3254089a644d --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/addr-map.h @@ -0,0 +1,34 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/addr-map.h + * + * Common address map definitions + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_ADDR_MAP_H +#define __ASM_MACH_ADDR_MAP_H + +/* APB - Application Subsystem Peripheral Bus + * + * NOTE: the DMA controller registers are actually on the AXI fabric #1 + * slave port to AHB/APB bridge, due to its close relationship to those + * peripherals on APB, let's count it into the ABP mapping area. + */ +#define APB_PHYS_BASE 0xd4000000 +#define APB_VIRT_BASE 0xfe000000 +#define APB_PHYS_SIZE 0x00200000 + +#define AXI_PHYS_BASE 0xd4200000 +#define AXI_VIRT_BASE 0xfe200000 +#define AXI_PHYS_SIZE 0x00200000 + +/* Static Memory Controller - Chip Select 0 and 1 */ +#define SMC_CS0_PHYS_BASE 0x80000000 +#define SMC_CS0_PHYS_SIZE 0x10000000 +#define SMC_CS1_PHYS_BASE 0x90000000 +#define SMC_CS1_PHYS_SIZE 0x10000000 + +#endif /* __ASM_MACH_ADDR_MAP_H */ diff --git a/arch/arm/mach-mmp/include/mach/clkdev.h b/arch/arm/mach-mmp/include/mach/clkdev.h new file mode 100644 index 000000000000..2fb354e54e0d --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/clkdev.h @@ -0,0 +1,7 @@ +#ifndef __ASM_MACH_CLKDEV_H +#define __ASM_MACH_CLKDEV_H + +#define __clk_get(clk) ({ 1; }) +#define __clk_put(clk) do { } while (0) + +#endif /* __ASM_MACH_CLKDEV_H */ diff --git a/arch/arm/mach-mmp/include/mach/cputype.h b/arch/arm/mach-mmp/include/mach/cputype.h new file mode 100644 index 000000000000..4ceed7a50755 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/cputype.h @@ -0,0 +1,21 @@ +#ifndef __ASM_MACH_CPUTYPE_H +#define __ASM_MACH_CPUTYPE_H + +#include + +/* + * CPU Stepping OLD_ID CPU_ID CHIP_ID + * + * PXA168 A0 0x41159263 0x56158400 0x00A0A333 + */ + +#ifdef CONFIG_CPU_PXA168 +# define __cpu_is_pxa168(id) \ + ({ unsigned int _id = ((id) >> 8) & 0xff; _id == 0x84; }) +#else +# define __cpu_is_pxa168(id) (0) +#endif + +#define cpu_is_pxa168() ({ __cpu_is_pxa168(read_cpuid_id()); }) + +#endif /* __ASM_MACH_CPUTYPE_H */ diff --git a/arch/arm/mach-mmp/include/mach/debug-macro.S b/arch/arm/mach-mmp/include/mach/debug-macro.S new file mode 100644 index 000000000000..a850f87de51d --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/debug-macro.S @@ -0,0 +1,23 @@ +/* arch/arm/mach-mmp/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copied from arch/arm/mach-pxa/include/mach/debug.S + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include + + .macro addruart,rx + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + ldreq \rx, =APB_PHYS_BASE @ physical + ldrne \rx, =APB_VIRT_BASE @ virtual + orr \rx, \rx, #0x00017000 + .endm + +#define UART_SHIFT 2 +#include diff --git a/arch/arm/mach-mmp/include/mach/devices.h b/arch/arm/mach-mmp/include/mach/devices.h new file mode 100644 index 000000000000..bc03388d5fde --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/devices.h @@ -0,0 +1,27 @@ +#include + +#define MAX_RESOURCE_DMA 2 + +/* structure for describing the on-chip devices */ +struct pxa_device_desc { + const char *dev_name; + const char *drv_name; + int id; + int irq; + unsigned long start; + unsigned long size; + int dma[MAX_RESOURCE_DMA]; +}; + +#define PXA168_DEVICE(_name, _drv, _id, _irq, _start, _size, _dma...) \ +struct pxa_device_desc pxa168_device_##_name __initdata = { \ + .dev_name = "pxa168-" #_name, \ + .drv_name = _drv, \ + .id = _id, \ + .irq = IRQ_PXA168_##_irq, \ + .start = _start, \ + .size = _size, \ + .dma = { _dma }, \ +}; + +extern int pxa_register_device(struct pxa_device_desc *, void *, size_t); diff --git a/arch/arm/mach-mmp/include/mach/dma.h b/arch/arm/mach-mmp/include/mach/dma.h new file mode 100644 index 000000000000..1d6914544da4 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/dma.h @@ -0,0 +1,13 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/dma.h + */ + +#ifndef __ASM_MACH_DMA_H +#define __ASM_MACH_DMA_H + +#include + +#define DMAC_REGS_VIRT (APB_VIRT_BASE + 0x00000) + +#include +#endif /* __ASM_MACH_DMA_H */ diff --git a/arch/arm/mach-mmp/include/mach/entry-macro.S b/arch/arm/mach-mmp/include/mach/entry-macro.S new file mode 100644 index 000000000000..6d3cd35478b5 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/entry-macro.S @@ -0,0 +1,25 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/entry-macro.S + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include + + .macro disable_fiq + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =ICU_AP_IRQ_SEL_INT_NUM + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \tmp, [\base, #0] + and \irqnr, \tmp, #0x3f + tst \tmp, #(1 << 6) + .endm diff --git a/arch/arm/mach-mmp/include/mach/hardware.h b/arch/arm/mach-mmp/include/mach/hardware.h new file mode 100644 index 000000000000..99264a5ce5e4 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/hardware.h @@ -0,0 +1,4 @@ +#ifndef __ASM_MACH_HARDWARE_H +#define __ASM_MACH_HARDWARE_H + +#endif /* __ASM_MACH_HARDWARE_H */ diff --git a/arch/arm/mach-mmp/include/mach/io.h b/arch/arm/mach-mmp/include/mach/io.h new file mode 100644 index 000000000000..e7adf3d012c1 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/io.h @@ -0,0 +1,21 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/io.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_IO_H +#define __ASM_MACH_IO_H + +#define IO_SPACE_LIMIT 0xffffffff + +/* + * We don't actually have real ISA nor PCI buses, but there is so many + * drivers out there that might just work if we fake them... + */ +#define __io(a) __typesafe_io(a) +#define __mem_pci(a) (a) + +#endif /* __ASM_MACH_IO_H */ diff --git a/arch/arm/mach-mmp/include/mach/irqs.h b/arch/arm/mach-mmp/include/mach/irqs.h new file mode 100644 index 000000000000..91ecb3fbca06 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/irqs.h @@ -0,0 +1,58 @@ +#ifndef __ASM_MACH_IRQS_H +#define __ASM_MACH_IRQS_H + +/* + * Interrupt numbers for PXA168 + */ +#define IRQ_PXA168_NONE (-1) +#define IRQ_PXA168_SSP3 0 +#define IRQ_PXA168_SSP2 1 +#define IRQ_PXA168_SSP1 2 +#define IRQ_PXA168_SSP0 3 +#define IRQ_PXA168_PMIC_INT 4 +#define IRQ_PXA168_RTC_INT 5 +#define IRQ_PXA168_RTC_ALARM 6 +#define IRQ_PXA168_TWSI0 7 +#define IRQ_PXA168_GPU 8 +#define IRQ_PXA168_KEYPAD 9 +#define IRQ_PXA168_ONEWIRE 12 +#define IRQ_PXA168_TIMER1 13 +#define IRQ_PXA168_TIMER2 14 +#define IRQ_PXA168_TIMER3 15 +#define IRQ_PXA168_CMU 16 +#define IRQ_PXA168_SSP4 17 +#define IRQ_PXA168_MSP_WAKEUP 19 +#define IRQ_PXA168_CF_WAKEUP 20 +#define IRQ_PXA168_XD_WAKEUP 21 +#define IRQ_PXA168_MFU 22 +#define IRQ_PXA168_MSP 23 +#define IRQ_PXA168_CF 24 +#define IRQ_PXA168_XD 25 +#define IRQ_PXA168_DDR_INT 26 +#define IRQ_PXA168_UART1 27 +#define IRQ_PXA168_UART2 28 +#define IRQ_PXA168_WDT 35 +#define IRQ_PXA168_FRQ_CHANGE 38 +#define IRQ_PXA168_SDH1 39 +#define IRQ_PXA168_SDH2 40 +#define IRQ_PXA168_LCD 41 +#define IRQ_PXA168_CI 42 +#define IRQ_PXA168_USB1 44 +#define IRQ_PXA168_NAND 45 +#define IRQ_PXA168_HIFI_DMA 46 +#define IRQ_PXA168_DMA_INT0 47 +#define IRQ_PXA168_DMA_INT1 48 +#define IRQ_PXA168_GPIOX 49 +#define IRQ_PXA168_USB2 51 +#define IRQ_PXA168_AC97 57 +#define IRQ_PXA168_TWSI1 58 +#define IRQ_PXA168_PMU 60 +#define IRQ_PXA168_SM_INT 63 + +#define IRQ_GPIO_START 64 +#define IRQ_GPIO_NUM 128 +#define IRQ_GPIO(x) (IRQ_GPIO_START + (x)) + +#define NR_IRQS (IRQ_GPIO_START + IRQ_GPIO_NUM) + +#endif /* __ASM_MACH_IRQS_H */ diff --git a/arch/arm/mach-mmp/include/mach/memory.h b/arch/arm/mach-mmp/include/mach/memory.h new file mode 100644 index 000000000000..bdb21d70714c --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/memory.h @@ -0,0 +1,14 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/memory.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_MEMORY_H +#define __ASM_MACH_MEMORY_H + +#define PHYS_OFFSET UL(0x00000000) + +#endif /* __ASM_MACH_MEMORY_H */ diff --git a/arch/arm/mach-mmp/include/mach/pxa168.h b/arch/arm/mach-mmp/include/mach/pxa168.h new file mode 100644 index 000000000000..ef0a8a2076e9 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/pxa168.h @@ -0,0 +1,23 @@ +#ifndef __ASM_MACH_PXA168_H +#define __ASM_MACH_PXA168_H + +#include + +extern struct pxa_device_desc pxa168_device_uart1; +extern struct pxa_device_desc pxa168_device_uart2; + +static inline int pxa168_add_uart(int id) +{ + struct pxa_device_desc *d = NULL; + + switch (id) { + case 1: d = &pxa168_device_uart1; break; + case 2: d = &pxa168_device_uart2; break; + } + + if (d == NULL) + return -EINVAL; + + return pxa_register_device(d, NULL, 0); +} +#endif /* __ASM_MACH_PXA168_H */ diff --git a/arch/arm/mach-mmp/include/mach/regs-apbc.h b/arch/arm/mach-mmp/include/mach/regs-apbc.h new file mode 100644 index 000000000000..e0ffae594873 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/regs-apbc.h @@ -0,0 +1,53 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/regs-apbc.h + * + * Application Peripheral Bus Clock Unit + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_REGS_APBC_H +#define __ASM_MACH_REGS_APBC_H + +#include + +#define APBC_VIRT_BASE (APB_VIRT_BASE + 0x015000) +#define APBC_REG(x) (APBC_VIRT_BASE + (x)) + +/* + * APB clock register offsets for PXA168 + */ +#define APBC_PXA168_UART1 APBC_REG(0x000) +#define APBC_PXA168_UART2 APBC_REG(0x004) +#define APBC_PXA168_GPIO APBC_REG(0x008) +#define APBC_PXA168_PWM0 APBC_REG(0x00c) +#define APBC_PXA168_PWM1 APBC_REG(0x010) +#define APBC_PXA168_SSP1 APBC_REG(0x01c) +#define APBC_PXA168_SSP2 APBC_REG(0x020) +#define APBC_PXA168_RTC APBC_REG(0x028) +#define APBC_PXA168_TWSI0 APBC_REG(0x02c) +#define APBC_PXA168_KPC APBC_REG(0x030) +#define APBC_PXA168_TIMERS APBC_REG(0x034) +#define APBC_PXA168_AIB APBC_REG(0x03c) +#define APBC_PXA168_SW_JTAG APBC_REG(0x040) +#define APBC_PXA168_ONEWIRE APBC_REG(0x048) +#define APBC_PXA168_SSP3 APBC_REG(0x04c) +#define APBC_PXA168_ASFAR APBC_REG(0x050) +#define APBC_PXA168_ASSAR APBC_REG(0x054) +#define APBC_PXA168_SSP4 APBC_REG(0x058) +#define APBC_PXA168_SSP5 APBC_REG(0x05c) +#define APBC_PXA168_TWSI1 APBC_REG(0x06c) +#define APBC_PXA168_UART3 APBC_REG(0x070) +#define APBC_PXA168_AC97 APBC_REG(0x084) + +/* Common APB clock register bit definitions */ +#define APBC_APBCLK (1 << 0) /* APB Bus Clock Enable */ +#define APBC_FNCLK (1 << 1) /* Functional Clock Enable */ +#define APBC_RST (1 << 2) /* Reset Generation */ + +/* Functional Clock Selection Mask */ +#define APBC_FNCLKSEL(x) (((x) & 0xf) << 4) + +#endif /* __ASM_MACH_REGS_APBC_H */ diff --git a/arch/arm/mach-mmp/include/mach/regs-apmu.h b/arch/arm/mach-mmp/include/mach/regs-apmu.h new file mode 100644 index 000000000000..919030514120 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/regs-apmu.h @@ -0,0 +1,36 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/regs-apmu.h + * + * Application Subsystem Power Management Unit + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_REGS_APMU_H +#define __ASM_MACH_REGS_APMU_H + +#include + +#define APMU_VIRT_BASE (AXI_VIRT_BASE + 0x82800) +#define APMU_REG(x) (APMU_VIRT_BASE + (x)) + +/* Clock Reset Control */ +#define APMU_IRE APMU_REG(0x048) +#define APMU_LCD APMU_REG(0x04c) +#define APMU_CCIC APMU_REG(0x050) +#define APMU_SDH0 APMU_REG(0x054) +#define APMU_SDH1 APMU_REG(0x058) +#define APMU_USB APMU_REG(0x05c) +#define APMU_NAND APMU_REG(0x060) +#define APMU_DMA APMU_REG(0x064) +#define APMU_GEU APMU_REG(0x068) +#define APMU_BUS APMU_REG(0x06c) + +#define APMU_FNCLK_EN (1 << 4) +#define APMU_AXICLK_EN (1 << 3) +#define APMU_FNRST_DIS (1 << 1) +#define APMU_AXIRST_DIS (1 << 0) + +#endif /* __ASM_MACH_REGS_APMU_H */ diff --git a/arch/arm/mach-mmp/include/mach/regs-icu.h b/arch/arm/mach-mmp/include/mach/regs-icu.h new file mode 100644 index 000000000000..e5f08723e0cc --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/regs-icu.h @@ -0,0 +1,31 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/regs-icu.h + * + * Interrupt Control Unit + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_ICU_H +#define __ASM_MACH_ICU_H + +#include + +#define ICU_VIRT_BASE (AXI_VIRT_BASE + 0x82000) +#define ICU_REG(x) (ICU_VIRT_BASE + (x)) + +#define ICU_INT_CONF(n) ICU_REG((n) << 2) +#define ICU_INT_CONF_AP_INT (1 << 6) +#define ICU_INT_CONF_CP_INT (1 << 5) +#define ICU_INT_CONF_IRQ (1 << 4) +#define ICU_INT_CONF_MASK (0xf) + +#define ICU_AP_FIQ_SEL_INT_NUM ICU_REG(0x108) /* AP FIQ Selected Interrupt */ +#define ICU_AP_IRQ_SEL_INT_NUM ICU_REG(0x10C) /* AP IRQ Selected Interrupt */ +#define ICU_AP_GBL_IRQ_MSK ICU_REG(0x114) /* AP Global Interrupt Mask */ +#define ICU_INT_STATUS_0 ICU_REG(0x128) /* Interrupt Stuats 0 */ +#define ICU_INT_STATUS_1 ICU_REG(0x12C) /* Interrupt Status 1 */ + +#endif /* __ASM_MACH_ICU_H */ diff --git a/arch/arm/mach-mmp/include/mach/regs-timers.h b/arch/arm/mach-mmp/include/mach/regs-timers.h new file mode 100644 index 000000000000..45589fec9fc7 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/regs-timers.h @@ -0,0 +1,44 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/regs-timers.h + * + * Timers Module + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_REGS_TIMERS_H +#define __ASM_MACH_REGS_TIMERS_H + +#include + +#define TIMERS1_VIRT_BASE (APB_VIRT_BASE + 0x14000) +#define TIMERS2_VIRT_BASE (APB_VIRT_BASE + 0x16000) + +#define TMR_CCR (0x0000) +#define TMR_TN_MM(n, m) (0x0004 + ((n) << 3) + (((n) + (m)) << 2)) +#define TMR_CR(n) (0x0028 + ((n) << 2)) +#define TMR_SR(n) (0x0034 + ((n) << 2)) +#define TMR_IER(n) (0x0040 + ((n) << 2)) +#define TMR_PLVR(n) (0x004c + ((n) << 2)) +#define TMR_PLCR(n) (0x0058 + ((n) << 2)) +#define TMR_WMER (0x0064) +#define TMR_WMR (0x0068) +#define TMR_WVR (0x006c) +#define TMR_WSR (0x0070) +#define TMR_ICR(n) (0x0074 + ((n) << 2)) +#define TMR_WICR (0x0080) +#define TMR_CER (0x0084) +#define TMR_CMR (0x0088) +#define TMR_ILR(n) (0x008c + ((n) << 2)) +#define TMR_WCR (0x0098) +#define TMR_WFAR (0x009c) +#define TMR_WSAR (0x00A0) +#define TMR_CVWR(n) (0x00A4 + ((n) << 2)) + +#define TMR_CCR_CS_0(x) (((x) & 0x3) << 0) +#define TMR_CCR_CS_1(x) (((x) & 0x7) << 2) +#define TMR_CCR_CS_2(x) (((x) & 0x3) << 5) + +#endif /* __ASM_MACH_REGS_TIMERS_H */ diff --git a/arch/arm/mach-mmp/include/mach/system.h b/arch/arm/mach-mmp/include/mach/system.h new file mode 100644 index 000000000000..001edfefec19 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/system.h @@ -0,0 +1,21 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/system.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_SYSTEM_H +#define __ASM_MACH_SYSTEM_H + +static inline void arch_idle(void) +{ + cpu_do_idle(); +} + +static inline void arch_reset(char mode) +{ + cpu_reset(0); +} +#endif /* __ASM_MACH_SYSTEM_H */ diff --git a/arch/arm/mach-mmp/include/mach/timex.h b/arch/arm/mach-mmp/include/mach/timex.h new file mode 100644 index 000000000000..6cebbd0ca8f4 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/timex.h @@ -0,0 +1,9 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/timex.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define CLOCK_TICK_RATE 3250000 diff --git a/arch/arm/mach-mmp/include/mach/uncompress.h b/arch/arm/mach-mmp/include/mach/uncompress.h new file mode 100644 index 000000000000..c93d5fa5865c --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/uncompress.h @@ -0,0 +1,41 @@ +/* + * arch/arm/mach-mmp/include/mach/uncompress.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include + +#define UART1_BASE (APB_PHYS_BASE + 0x36000) +#define UART2_BASE (APB_PHYS_BASE + 0x17000) +#define UART3_BASE (APB_PHYS_BASE + 0x18000) + +static inline void putc(char c) +{ + volatile unsigned long *UART = (unsigned long *)UART2_BASE; + + /* UART enabled? */ + if (!(UART[UART_IER] & UART_IER_UUE)) + return; + + while (!(UART[UART_LSR] & UART_LSR_THRE)) + barrier(); + + UART[UART_TX] = c; +} + +/* + * This does not append a newline + */ +static inline void flush(void) +{ +} + +/* + * nothing to do + */ +#define arch_decomp_setup() +#define arch_decomp_wdog() diff --git a/arch/arm/mach-mmp/include/mach/vmalloc.h b/arch/arm/mach-mmp/include/mach/vmalloc.h new file mode 100644 index 000000000000..b60ccaf9fee7 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/vmalloc.h @@ -0,0 +1,5 @@ +/* + * linux/arch/arm/mach-mmp/include/mach/vmalloc.h + */ + +#define VMALLOC_END 0xfe000000 diff --git a/arch/arm/mach-mmp/irq.c b/arch/arm/mach-mmp/irq.c new file mode 100644 index 000000000000..52ff2f065eba --- /dev/null +++ b/arch/arm/mach-mmp/irq.c @@ -0,0 +1,55 @@ +/* + * linux/arch/arm/mach-mmp/irq.c + * + * Generic IRQ handling, GPIO IRQ demultiplexing, etc. + * + * Author: Bin Yang + * Created: Sep 30, 2008 + * Copyright: Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include + +#include + +#include "common.h" + +#define IRQ_ROUTE_TO_AP (ICU_INT_CONF_AP_INT | ICU_INT_CONF_IRQ) + +#define PRIORITY_DEFAULT 0x1 +#define PRIORITY_NONE 0x0 /* means IRQ disabled */ + +static void icu_mask_irq(unsigned int irq) +{ + __raw_writel(PRIORITY_NONE, ICU_INT_CONF(irq)); +} + +static void icu_unmask_irq(unsigned int irq) +{ + __raw_writel(IRQ_ROUTE_TO_AP | PRIORITY_DEFAULT, ICU_INT_CONF(irq)); +} + +static struct irq_chip icu_irq_chip = { + .name = "icu_irq", + .ack = icu_mask_irq, + .mask = icu_mask_irq, + .unmask = icu_unmask_irq, +}; + +void __init icu_init_irq(void) +{ + int irq; + + for (irq = 0; irq < 64; irq++) { + icu_mask_irq(irq); + set_irq_chip(irq, &icu_irq_chip); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } +} diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c new file mode 100644 index 000000000000..1935c7545117 --- /dev/null +++ b/arch/arm/mach-mmp/pxa168.c @@ -0,0 +1,77 @@ +/* + * linux/arch/arm/mach-mmp/pxa168.c + * + * Code specific to PXA168 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "common.h" +#include "clock.h" + +void __init pxa168_init_irq(void) +{ + icu_init_irq(); +} + +/* APB peripheral clocks */ +static APBC_CLK(uart1, PXA168_UART1, 1, 14745600); +static APBC_CLK(uart2, PXA168_UART2, 1, 14745600); + +/* device and clock bindings */ +static struct clk_lookup pxa168_clkregs[] = { + INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL), + INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL), +}; + +static int __init pxa168_init(void) +{ + if (cpu_is_pxa168()) { + pxa_init_dma(IRQ_PXA168_DMA_INT0, 32); + clks_register(ARRAY_AND_SIZE(pxa168_clkregs)); + } + + return 0; +} +postcore_initcall(pxa168_init); + +/* system timer - clock enabled, 3.25MHz */ +#define TIMER_CLK_RST (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3)) + +static void __init pxa168_timer_init(void) +{ + /* this is early, we have to initialize the CCU registers by + * ourselves instead of using clk_* API. Clock rate is defined + * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running + */ + __raw_writel(APBC_APBCLK | APBC_RST, APBC_PXA168_TIMERS); + + /* 3.25MHz, bus/functional clock enabled, release reset */ + __raw_writel(TIMER_CLK_RST, APBC_PXA168_TIMERS); + + timer_init(IRQ_PXA168_TIMER1); +} + +struct sys_timer pxa168_timer = { + .init = pxa168_timer_init, +}; + +/* on-chip devices */ +PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22); +PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24); diff --git a/arch/arm/mach-mmp/time.c b/arch/arm/mach-mmp/time.c new file mode 100644 index 000000000000..b03a6eda7419 --- /dev/null +++ b/arch/arm/mach-mmp/time.c @@ -0,0 +1,199 @@ +/* + * linux/arch/arm/mach-mmp/time.c + * + * Support for clocksource and clockevents + * + * Copyright (C) 2008 Marvell International Ltd. + * All rights reserved. + * + * 2008-04-11: Jason Chagas + * 2008-10-08: Bin Yang + * + * The timers module actually includes three timers, each timer with upto + * three match comparators. Timer #0 is used here in free-running mode as + * the clock source, and match comparator #1 used as clock event device. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include "clock.h" + +#define TIMERS_VIRT_BASE TIMERS1_VIRT_BASE + +#define MAX_DELTA (0xfffffffe) +#define MIN_DELTA (16) + +#define TCR2NS_SCALE_FACTOR 10 + +static unsigned long tcr2ns_scale; + +static void __init set_tcr2ns_scale(unsigned long tcr_rate) +{ + unsigned long long v = 1000000000ULL << TCR2NS_SCALE_FACTOR; + do_div(v, tcr_rate); + tcr2ns_scale = v; + /* + * We want an even value to automatically clear the top bit + * returned by cnt32_to_63() without an additional run time + * instruction. So if the LSB is 1 then round it up. + */ + if (tcr2ns_scale & 1) + tcr2ns_scale++; +} + +/* + * FIXME: the timer needs some delay to stablize the counter capture + */ +static inline uint32_t timer_read(void) +{ + int delay = 100; + + __raw_writel(1, TIMERS_VIRT_BASE + TMR_CVWR(0)); + + while (delay--) + cpu_relax(); + + return __raw_readl(TIMERS_VIRT_BASE + TMR_CVWR(0)); +} + +unsigned long long sched_clock(void) +{ + unsigned long long v = cnt32_to_63(timer_read()); + return (v * tcr2ns_scale) >> TCR2NS_SCALE_FACTOR; +} + +static irqreturn_t timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *c = dev_id; + + /* disable and clear pending interrupt status */ + __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_IER(0)); + __raw_writel(0x1, TIMERS_VIRT_BASE + TMR_ICR(0)); + c->event_handler(c); + return IRQ_HANDLED; +} + +static int timer_set_next_event(unsigned long delta, + struct clock_event_device *dev) +{ + unsigned long flags, next; + + local_irq_save(flags); + + /* clear pending interrupt status and enable */ + __raw_writel(0x01, TIMERS_VIRT_BASE + TMR_ICR(0)); + __raw_writel(0x01, TIMERS_VIRT_BASE + TMR_IER(0)); + + next = timer_read() + delta; + __raw_writel(next, TIMERS_VIRT_BASE + TMR_TN_MM(0, 0)); + + local_irq_restore(flags); + return 0; +} + +static void timer_set_mode(enum clock_event_mode mode, + struct clock_event_device *dev) +{ + unsigned long flags; + + local_irq_save(flags); + switch (mode) { + case CLOCK_EVT_MODE_ONESHOT: + case CLOCK_EVT_MODE_UNUSED: + case CLOCK_EVT_MODE_SHUTDOWN: + /* disable the matching interrupt */ + __raw_writel(0x00, TIMERS_VIRT_BASE + TMR_IER(0)); + break; + case CLOCK_EVT_MODE_RESUME: + case CLOCK_EVT_MODE_PERIODIC: + break; + } + local_irq_restore(flags); +} + +static struct clock_event_device ckevt = { + .name = "clockevent", + .features = CLOCK_EVT_FEAT_ONESHOT, + .shift = 32, + .rating = 200, + .set_next_event = timer_set_next_event, + .set_mode = timer_set_mode, +}; + +static cycle_t clksrc_read(void) +{ + return timer_read(); +} + +static struct clocksource cksrc = { + .name = "clocksource", + .shift = 20, + .rating = 200, + .read = clksrc_read, + .mask = CLOCKSOURCE_MASK(32), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +static void __init timer_config(void) +{ + uint32_t ccr = __raw_readl(TIMERS_VIRT_BASE + TMR_CCR); + uint32_t cer = __raw_readl(TIMERS_VIRT_BASE + TMR_CER); + uint32_t cmr = __raw_readl(TIMERS_VIRT_BASE + TMR_CMR); + + __raw_writel(cer & ~0x1, TIMERS_VIRT_BASE + TMR_CER); /* disable */ + + ccr &= TMR_CCR_CS_0(0x3); + __raw_writel(ccr, TIMERS_VIRT_BASE + TMR_CCR); + + /* free-running mode */ + __raw_writel(cmr | 0x01, TIMERS_VIRT_BASE + TMR_CMR); + + __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_PLCR(0)); /* free-running */ + __raw_writel(0x7, TIMERS_VIRT_BASE + TMR_ICR(0)); /* clear status */ + __raw_writel(0x0, TIMERS_VIRT_BASE + TMR_IER(0)); + + /* enable timer counter */ + __raw_writel(cer | 0x01, TIMERS_VIRT_BASE + TMR_CER); +} + +static struct irqaction timer_irq = { + .name = "timer", + .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .handler = timer_interrupt, + .dev_id = &ckevt, +}; + +void __init timer_init(int irq) +{ + timer_config(); + + set_tcr2ns_scale(CLOCK_TICK_RATE); + + ckevt.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, ckevt.shift); + ckevt.max_delta_ns = clockevent_delta2ns(MAX_DELTA, &ckevt); + ckevt.min_delta_ns = clockevent_delta2ns(MIN_DELTA, &ckevt); + ckevt.cpumask = cpumask_of(0); + + cksrc.mult = clocksource_hz2mult(CLOCK_TICK_RATE, cksrc.shift); + + setup_irq(irq, &timer_irq); + + clocksource_register(&cksrc); + clockevents_register_device(&ckevt); +} diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index d490f3773c01..64086f4f5fcc 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -340,6 +340,17 @@ config CPU_XSC3 select CPU_TLB_V4WBI if MMU select IO_36 +# Marvell PJ1 (Mohawk) +config CPU_MOHAWK + bool + select CPU_32v5 + select CPU_ABRT_EV5T + select CPU_PABRT_NOIFAR + select CPU_CACHE_VIVT + select CPU_CP15_MMU + select CPU_TLB_V4WBI if MMU + select CPU_COPY_V4WB if MMU + # Feroceon config CPU_FEROCEON bool @@ -569,7 +580,7 @@ comment "Processor Features" config ARM_THUMB bool "Support Thumb user binaries" - depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_V6 || CPU_V7 || CPU_FEROCEON + depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_V6 || CPU_V7 || CPU_FEROCEON default y help Say Y if you want to include kernel support for running user space @@ -653,7 +664,7 @@ config CPU_CACHE_ROUND_ROBIN config CPU_BPREDICT_DISABLE bool "Disable branch prediction" - depends on CPU_ARM1020 || CPU_V6 || CPU_XSC3 || CPU_V7 + depends on CPU_ARM1020 || CPU_V6 || CPU_MOHAWK || CPU_XSC3 || CPU_V7 help Say Y here to disable branch prediction. If unsure, say N. diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 480f78a3611a..64149d9e55a5 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_CPU_SA110) += proc-sa110.o obj-$(CONFIG_CPU_SA1100) += proc-sa1100.o obj-$(CONFIG_CPU_XSCALE) += proc-xscale.o obj-$(CONFIG_CPU_XSC3) += proc-xsc3.o +obj-$(CONFIG_CPU_MOHAWK) += proc-mohawk.o obj-$(CONFIG_CPU_FEROCEON) += proc-feroceon.o obj-$(CONFIG_CPU_V6) += proc-v6.o obj-$(CONFIG_CPU_V7) += proc-v7.o diff --git a/arch/arm/mm/proc-mohawk.S b/arch/arm/mm/proc-mohawk.S new file mode 100644 index 000000000000..540f5078496b --- /dev/null +++ b/arch/arm/mm/proc-mohawk.S @@ -0,0 +1,416 @@ +/* + * linux/arch/arm/mm/proc-mohawk.S: MMU functions for Marvell PJ1 core + * + * PJ1 (codename Mohawk) is a hybrid of the xscale3 and Marvell's own core. + * + * Heavily based on proc-arm926.S and proc-xsc3.S + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "proc-macros.S" + +/* + * This is the maximum size of an area which will be flushed. If the + * area is larger than this, then we flush the whole cache. + */ +#define CACHE_DLIMIT 32768 + +/* + * The cache line size of the L1 D cache. + */ +#define CACHE_DLINESIZE 32 + +/* + * cpu_mohawk_proc_init() + */ +ENTRY(cpu_mohawk_proc_init) + mov pc, lr + +/* + * cpu_mohawk_proc_fin() + */ +ENTRY(cpu_mohawk_proc_fin) + stmfd sp!, {lr} + mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE + msr cpsr_c, ip + bl mohawk_flush_kern_cache_all + mrc p15, 0, r0, c1, c0, 0 @ ctrl register + bic r0, r0, #0x1800 @ ...iz........... + bic r0, r0, #0x0006 @ .............ca. + mcr p15, 0, r0, c1, c0, 0 @ disable caches + ldmfd sp!, {pc} + +/* + * cpu_mohawk_reset(loc) + * + * Perform a soft reset of the system. Put the CPU into the + * same state as it would be if it had been reset, and branch + * to what would be the reset vector. + * + * loc: location to jump to for soft reset + * + * (same as arm926) + */ + .align 5 +ENTRY(cpu_mohawk_reset) + mov ip, #0 + mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches + mcr p15, 0, ip, c7, c10, 4 @ drain WB + mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs + mrc p15, 0, ip, c1, c0, 0 @ ctrl register + bic ip, ip, #0x0007 @ .............cam + bic ip, ip, #0x1100 @ ...i...s........ + mcr p15, 0, ip, c1, c0, 0 @ ctrl register + mov pc, r0 + +/* + * cpu_mohawk_do_idle() + * + * Called with IRQs disabled + */ + .align 5 +ENTRY(cpu_mohawk_do_idle) + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mcr p15, 0, r0, c7, c0, 4 @ wait for interrupt + mov pc, lr + +/* + * flush_user_cache_all() + * + * Clean and invalidate all cache entries in a particular + * address space. + */ +ENTRY(mohawk_flush_user_cache_all) + /* FALLTHROUGH */ + +/* + * flush_kern_cache_all() + * + * Clean and invalidate the entire cache. + */ +ENTRY(mohawk_flush_kern_cache_all) + mov r2, #VM_EXEC + mov ip, #0 +__flush_whole_cache: + mcr p15, 0, ip, c7, c14, 0 @ clean & invalidate all D cache + tst r2, #VM_EXEC + mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache + mcrne p15, 0, ip, c7, c10, 0 @ drain write buffer + mov pc, lr + +/* + * flush_user_cache_range(start, end, flags) + * + * Clean and invalidate a range of cache entries in the + * specified address range. + * + * - start - start address (inclusive) + * - end - end address (exclusive) + * - flags - vm_flags describing address space + * + * (same as arm926) + */ +ENTRY(mohawk_flush_user_cache_range) + mov ip, #0 + sub r3, r1, r0 @ calculate total size + cmp r3, #CACHE_DLIMIT + bgt __flush_whole_cache +1: tst r2, #VM_EXEC + mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry + mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry + add r0, r0, #CACHE_DLINESIZE + mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry + mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + tst r2, #VM_EXEC + mcrne p15, 0, ip, c7, c10, 4 @ drain WB + mov pc, lr + +/* + * coherent_kern_range(start, end) + * + * Ensure coherency between the Icache and the Dcache in the + * region described by start, end. If you have non-snooping + * Harvard caches, you need to implement this function. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(mohawk_coherent_kern_range) + /* FALLTHROUGH */ + +/* + * coherent_user_range(start, end) + * + * Ensure coherency between the Icache and the Dcache in the + * region described by start, end. If you have non-snooping + * Harvard caches, you need to implement this function. + * + * - start - virtual start address + * - end - virtual end address + * + * (same as arm926) + */ +ENTRY(mohawk_coherent_user_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +/* + * flush_kern_dcache_page(void *page) + * + * Ensure no D cache aliasing occurs, either with itself or + * the I cache + * + * - addr - page aligned address + */ +ENTRY(mohawk_flush_kern_dcache_page) + add r1, r0, #PAGE_SZ +1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +/* + * dma_inv_range(start, end) + * + * Invalidate (discard) the specified virtual address range. + * May not write back any entries. If 'start' or 'end' + * are not cache line aligned, those lines must be written + * back. + * + * - start - virtual start address + * - end - virtual end address + * + * (same as v4wb) + */ +ENTRY(mohawk_dma_inv_range) + tst r0, #CACHE_DLINESIZE - 1 + mcrne p15, 0, r0, c7, c10, 1 @ clean D entry + tst r1, #CACHE_DLINESIZE - 1 + mcrne p15, 0, r1, c7, c10, 1 @ clean D entry + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +/* + * dma_clean_range(start, end) + * + * Clean the specified virtual address range. + * + * - start - virtual start address + * - end - virtual end address + * + * (same as v4wb) + */ +ENTRY(mohawk_dma_clean_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +/* + * dma_flush_range(start, end) + * + * Clean and invalidate the specified virtual address range. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(mohawk_dma_flush_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: + mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +ENTRY(mohawk_cache_fns) + .long mohawk_flush_kern_cache_all + .long mohawk_flush_user_cache_all + .long mohawk_flush_user_cache_range + .long mohawk_coherent_kern_range + .long mohawk_coherent_user_range + .long mohawk_flush_kern_dcache_page + .long mohawk_dma_inv_range + .long mohawk_dma_clean_range + .long mohawk_dma_flush_range + +ENTRY(cpu_mohawk_dcache_clean_area) +1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + add r0, r0, #CACHE_DLINESIZE + subs r1, r1, #CACHE_DLINESIZE + bhi 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +/* + * cpu_mohawk_switch_mm(pgd) + * + * Set the translation base pointer to be as described by pgd. + * + * pgd: new page tables + */ + .align 5 +ENTRY(cpu_mohawk_switch_mm) + mov ip, #0 + mcr p15, 0, ip, c7, c14, 0 @ clean & invalidate all D cache + mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache + mcr p15, 0, ip, c7, c10, 4 @ drain WB + orr r0, r0, #0x18 @ cache the page table in L2 + mcr p15, 0, r0, c2, c0, 0 @ load page table pointer + mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs + mov pc, lr + +/* + * cpu_mohawk_set_pte_ext(ptep, pte, ext) + * + * Set a PTE and flush it out + */ + .align 5 +ENTRY(cpu_mohawk_set_pte_ext) + armv3_set_pte_ext + mov r0, r0 + mcr p15, 0, r0, c7, c10, 1 @ clean D entry + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + + __INIT + + .type __mohawk_setup, #function +__mohawk_setup: + mov r0, #0 + mcr p15, 0, r0, c7, c7 @ invalidate I,D caches + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs + orr r4, r4, #0x18 @ cache the page table in L2 + mcr p15, 0, r4, c2, c0, 0 @ load page table pointer + + mov r0, #0 @ don't allow CP access + mcr p15, 0, r0, c15, c1, 0 @ write CP access register + + adr r5, mohawk_crval + ldmia r5, {r5, r6} + mrc p15, 0, r0, c1, c0 @ get control register + bic r0, r0, r5 + orr r0, r0, r6 + mov pc, lr + + .size __mohawk_setup, . - __mohawk_setup + + /* + * R + * .RVI ZFRS BLDP WCAM + * .011 1001 ..00 0101 + * + */ + .type mohawk_crval, #object +mohawk_crval: + crval clear=0x00007f3f, mmuset=0x00003905, ucset=0x00001134 + + __INITDATA + +/* + * Purpose : Function pointers used to access above functions - all calls + * come through these + */ + .type mohawk_processor_functions, #object +mohawk_processor_functions: + .word v5t_early_abort + .word pabort_noifar + .word cpu_mohawk_proc_init + .word cpu_mohawk_proc_fin + .word cpu_mohawk_reset + .word cpu_mohawk_do_idle + .word cpu_mohawk_dcache_clean_area + .word cpu_mohawk_switch_mm + .word cpu_mohawk_set_pte_ext + .size mohawk_processor_functions, . - mohawk_processor_functions + + .section ".rodata" + + .type cpu_arch_name, #object +cpu_arch_name: + .asciz "armv5te" + .size cpu_arch_name, . - cpu_arch_name + + .type cpu_elf_name, #object +cpu_elf_name: + .asciz "v5" + .size cpu_elf_name, . - cpu_elf_name + + .type cpu_mohawk_name, #object +cpu_mohawk_name: + .asciz "Marvell 88SV331x" + .size cpu_mohawk_name, . - cpu_mohawk_name + + .align + + .section ".proc.info.init", #alloc, #execinstr + + .type __88sv331x_proc_info,#object +__88sv331x_proc_info: + .long 0x56158000 @ Marvell 88SV331x (MOHAWK) + .long 0xfffff000 + .long PMD_TYPE_SECT | \ + PMD_SECT_BUFFERABLE | \ + PMD_SECT_CACHEABLE | \ + PMD_BIT4 | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ + .long PMD_TYPE_SECT | \ + PMD_BIT4 | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ + b __mohawk_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP + .long cpu_mohawk_name + .long mohawk_processor_functions + .long v4wbi_tlb_fns + .long v4wb_user_fns + .long mohawk_cache_fns + .size __88sv331x_proc_info, . - __88sv331x_proc_info -- cgit v1.2.3 From 28853ac8fe5221de74a14f1182d7b2b383dfd85c Mon Sep 17 00:00:00 2001 From: Paulius Zaleckas Date: Wed, 25 Mar 2009 13:10:01 +0200 Subject: ARM: Add support for FA526 v2 Adds support for Faraday FA526 core. This core is used at least by: Cortina Systems Gemini and Centroid family Cavium Networks ECONA family Grain Media GM8120 Pixelplus ImageARM Prolific PL-1029 Faraday IP evaluation boards v2: - move TLB_BTB to separate patch - update copyrights Signed-off-by: Paulius Zaleckas --- arch/arm/Makefile | 1 + arch/arm/boot/compressed/head.S | 26 ++++ arch/arm/include/asm/cacheflush.h | 8 ++ arch/arm/include/asm/page.h | 8 ++ arch/arm/include/asm/proc-fns.h | 8 ++ arch/arm/include/asm/system.h | 6 + arch/arm/include/asm/tlbflush.h | 19 +++ arch/arm/mm/Kconfig | 35 +++++- arch/arm/mm/Makefile | 4 + arch/arm/mm/cache-fa.S | 220 +++++++++++++++++++++++++++++++++ arch/arm/mm/copypage-fa.c | 86 +++++++++++++ arch/arm/mm/proc-fa526.S | 248 ++++++++++++++++++++++++++++++++++++++ arch/arm/mm/tlb-fa.S | 75 ++++++++++++ 13 files changed, 742 insertions(+), 2 deletions(-) create mode 100644 arch/arm/mm/cache-fa.S create mode 100644 arch/arm/mm/copypage-fa.c create mode 100644 arch/arm/mm/proc-fa526.S create mode 100644 arch/arm/mm/tlb-fa.S (limited to 'arch/arm/Makefile') diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 24e0f0187697..d29f9260fb1c 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -72,6 +72,7 @@ tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi +tune-$(CONFIG_CPU_FA526) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110 tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100 tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 77d614232d81..def02483286a 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -459,6 +459,20 @@ __armv7_mmu_cache_on: mcr p15, 0, r0, c7, c5, 4 @ ISB mov pc, r12 +__fa526_cache_on: + mov r12, lr + bl __setup_mmu + mov r0, #0 + mcr p15, 0, r0, c7, c7, 0 @ Invalidate whole cache + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mcr p15, 0, r0, c8, c7, 0 @ flush UTLB + mrc p15, 0, r0, c1, c0, 0 @ read control reg + orr r0, r0, #0x1000 @ I-cache enable + bl __common_mmu_cache_on + mov r0, #0 + mcr p15, 0, r0, c8, c7, 0 @ flush UTLB + mov pc, r12 + __arm6_mmu_cache_on: mov r12, lr bl __setup_mmu @@ -636,6 +650,12 @@ proc_types: b __armv4_mmu_cache_off b __armv5tej_mmu_cache_flush + .word 0x66015261 @ FA526 + .word 0xff01fff1 + b __fa526_cache_on + b __armv4_mmu_cache_off + b __fa526_cache_flush + @ These match on the architecture ID .word 0x00020000 @ ARMv4T @@ -775,6 +795,12 @@ __armv4_mpu_cache_flush: mcr p15, 0, ip, c7, c10, 4 @ drain WB mov pc, lr +__fa526_cache_flush: + mov r1, #0 + mcr p15, 0, r1, c7, c14, 0 @ clean and invalidate D cache + mcr p15, 0, r1, c7, c5, 0 @ flush I cache + mcr p15, 0, r1, c7, c10, 4 @ drain WB + mov pc, lr __armv6_mmu_cache_flush: mov r1, #0 diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index 6cbd8fdc9f1f..a6b8b90ed57f 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -46,6 +46,14 @@ # define MULTI_CACHE 1 #endif +#if defined(CONFIG_CPU_FA526) +# ifdef _CACHE +# define MULTI_CACHE 1 +# else +# define _CACHE fa +# endif +#endif + #if defined(CONFIG_CPU_ARM926T) # ifdef _CACHE # define MULTI_CACHE 1 diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h index f341c9dbd662..e6eb8a67b807 100644 --- a/arch/arm/include/asm/page.h +++ b/arch/arm/include/asm/page.h @@ -76,6 +76,14 @@ # endif #endif +#ifdef CONFIG_CPU_COPY_FA +# ifdef _USER +# define MULTI_USER 1 +# else +# define _USER fa +# endif +#endif + #ifdef CONFIG_CPU_SA1100 # ifdef _USER # define MULTI_USER 1 diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h index db80203b68e0..00949281d3ee 100644 --- a/arch/arm/include/asm/proc-fns.h +++ b/arch/arm/include/asm/proc-fns.h @@ -89,6 +89,14 @@ # define CPU_NAME cpu_arm922 # endif # endif +# ifdef CONFIG_CPU_FA526 +# ifdef CPU_NAME +# undef MULTI_CPU +# define MULTI_CPU +# else +# define CPU_NAME cpu_fa526 +# endif +# endif # ifdef CONFIG_CPU_ARM925T # ifdef CPU_NAME # undef MULTI_CPU diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index 811be55f338e..d6a4dad99c9b 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -125,6 +125,12 @@ extern unsigned int user_debug; : : "r" (0) : "memory") #define dmb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ : : "r" (0) : "memory") +#elif defined(CONFIG_CPU_FA526) +#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ + : : "r" (0) : "memory") +#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ + : : "r" (0) : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") #else #define isb() __asm__ __volatile__ ("" : : : "memory") #define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h index ffedd2494eab..a62218013c78 100644 --- a/arch/arm/include/asm/tlbflush.h +++ b/arch/arm/include/asm/tlbflush.h @@ -54,6 +54,7 @@ * v4wb - ARMv4 with write buffer without I TLB flush entry instruction * v4wbi - ARMv4 with write buffer with I TLB flush entry instruction * fr - Feroceon (v4wbi with non-outer-cacheable page table walks) + * fa - Faraday (v4 with write buffer with UTLB and branch target buffer (BTB)) * v6wbi - ARMv6 with write buffer with I TLB flush entry instruction * v7wbi - identical to v6wbi */ @@ -90,6 +91,22 @@ # define v4_always_flags (-1UL) #endif +#define fa_tlb_flags (TLB_WB | TLB_BTB | TLB_DCLEAN | \ + TLB_V4_U_FULL | TLB_V4_U_PAGE) + +#ifdef CONFIG_CPU_TLB_FA +# define fa_possible_flags fa_tlb_flags +# define fa_always_flags fa_tlb_flags +# ifdef _TLB +# define MULTI_TLB 1 +# else +# define _TLB fa +# endif +#else +# define fa_possible_flags 0 +# define fa_always_flags (-1UL) +#endif + #define v4wbi_tlb_flags (TLB_WB | TLB_DCLEAN | \ TLB_V4_I_FULL | TLB_V4_D_FULL | \ TLB_V4_I_PAGE | TLB_V4_D_PAGE) @@ -268,6 +285,7 @@ extern struct cpu_tlb_fns cpu_tlb; v4wbi_possible_flags | \ fr_possible_flags | \ v4wb_possible_flags | \ + fa_possible_flags | \ v6wbi_possible_flags | \ v7wbi_possible_flags) @@ -276,6 +294,7 @@ extern struct cpu_tlb_fns cpu_tlb; v4wbi_always_flags & \ fr_always_flags & \ v4wb_always_flags & \ + fa_always_flags & \ v6wbi_always_flags & \ v7wbi_always_flags) diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index d490f3773c01..bc3331863d9d 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -186,6 +186,24 @@ config CPU_ARM926T Say Y if you want support for the ARM926T processor. Otherwise, say N. +# FA526 +config CPU_FA526 + bool + select CPU_32v4 + select CPU_ABRT_EV4 + select CPU_PABRT_NOIFAR + select CPU_CACHE_VIVT + select CPU_CP15_MMU + select CPU_CACHE_FA + select CPU_COPY_FA if MMU + select CPU_TLB_FA if MMU + help + The FA526 is a version of the ARMv4 compatible processor with + Branch Target Buffer, Unified TLB and cache line size 16. + + Say Y if you want support for the FA526 processor. + Otherwise, say N. + # ARM940T config CPU_ARM940T bool "Support ARM940T processor" if ARCH_INTEGRATOR @@ -484,6 +502,9 @@ config CPU_CACHE_VIVT config CPU_CACHE_VIPT bool +config CPU_CACHE_FA + bool + if MMU # The copy-page model config CPU_COPY_V3 @@ -498,6 +519,9 @@ config CPU_COPY_V4WB config CPU_COPY_FEROCEON bool +config CPU_COPY_FA + bool + config CPU_COPY_V6 bool @@ -528,6 +552,13 @@ config CPU_TLB_FEROCEON help Feroceon TLB (v4wbi with non-outer-cachable page table walks). +config CPU_TLB_FA + bool + help + Faraday ARM FA526 architecture, unified TLB with writeback cache + and invalidate instruction cache entry. Branch target buffer is + also supported. + config CPU_TLB_V6 bool @@ -638,7 +669,7 @@ config CPU_DCACHE_SIZE config CPU_DCACHE_WRITETHROUGH bool "Force write through D-cache" - depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020) && !CPU_DCACHE_DISABLE + depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_FA526) && !CPU_DCACHE_DISABLE default y if CPU_ARM925T help Say Y here to use the data cache in writethrough mode. Unless you @@ -653,7 +684,7 @@ config CPU_CACHE_ROUND_ROBIN config CPU_BPREDICT_DISABLE bool "Disable branch prediction" - depends on CPU_ARM1020 || CPU_V6 || CPU_XSC3 || CPU_V7 + depends on CPU_ARM1020 || CPU_V6 || CPU_XSC3 || CPU_V7 || CPU_FA526 help Say Y here to disable branch prediction. If unsure, say N. diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 480f78a3611a..40f941c2245c 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_CPU_CACHE_V4WT) += cache-v4wt.o obj-$(CONFIG_CPU_CACHE_V4WB) += cache-v4wb.o obj-$(CONFIG_CPU_CACHE_V6) += cache-v6.o obj-$(CONFIG_CPU_CACHE_V7) += cache-v7.o +obj-$(CONFIG_CPU_CACHE_FA) += cache-fa.o obj-$(CONFIG_CPU_COPY_V3) += copypage-v3.o obj-$(CONFIG_CPU_COPY_V4WT) += copypage-v4wt.o @@ -41,6 +42,7 @@ obj-$(CONFIG_CPU_COPY_V6) += copypage-v6.o context.o obj-$(CONFIG_CPU_SA1100) += copypage-v4mc.o obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o obj-$(CONFIG_CPU_XSC3) += copypage-xsc3.o +obj-$(CONFIG_CPU_COPY_FA) += copypage-fa.o obj-$(CONFIG_CPU_TLB_V3) += tlb-v3.o obj-$(CONFIG_CPU_TLB_V4WT) += tlb-v4.o @@ -49,6 +51,7 @@ obj-$(CONFIG_CPU_TLB_V4WBI) += tlb-v4wbi.o obj-$(CONFIG_CPU_TLB_FEROCEON) += tlb-v4wbi.o # reuse v4wbi TLB functions obj-$(CONFIG_CPU_TLB_V6) += tlb-v6.o obj-$(CONFIG_CPU_TLB_V7) += tlb-v7.o +obj-$(CONFIG_CPU_TLB_FA) += tlb-fa.o obj-$(CONFIG_CPU_ARM610) += proc-arm6_7.o obj-$(CONFIG_CPU_ARM710) += proc-arm6_7.o @@ -62,6 +65,7 @@ obj-$(CONFIG_CPU_ARM925T) += proc-arm925.o obj-$(CONFIG_CPU_ARM926T) += proc-arm926.o obj-$(CONFIG_CPU_ARM940T) += proc-arm940.o obj-$(CONFIG_CPU_ARM946E) += proc-arm946.o +obj-$(CONFIG_CPU_FA526) += proc-fa526.o obj-$(CONFIG_CPU_ARM1020) += proc-arm1020.o obj-$(CONFIG_CPU_ARM1020E) += proc-arm1020e.o obj-$(CONFIG_CPU_ARM1022) += proc-arm1022.o diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S new file mode 100644 index 000000000000..b63a8f7b95cf --- /dev/null +++ b/arch/arm/mm/cache-fa.S @@ -0,0 +1,220 @@ +/* + * linux/arch/arm/mm/cache-fa.S + * + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * Based on cache-v4wb.S: + * Copyright (C) 1997-2002 Russell king + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Processors: FA520 FA526 FA626 + */ +#include +#include +#include +#include + +#include "proc-macros.S" + +/* + * The size of one data cache line. + */ +#define CACHE_DLINESIZE 16 + +/* + * The total size of the data cache. + */ +#ifdef CONFIG_ARCH_GEMINI +#define CACHE_DSIZE 8192 +#else +#define CACHE_DSIZE 16384 +#endif + +/* FIXME: put optimal value here. Current one is just estimation */ +#define CACHE_DLIMIT (CACHE_DSIZE * 2) + +/* + * flush_user_cache_all() + * + * Clean and invalidate all cache entries in a particular address + * space. + */ +ENTRY(fa_flush_user_cache_all) + /* FALLTHROUGH */ +/* + * flush_kern_cache_all() + * + * Clean and invalidate the entire cache. + */ +ENTRY(fa_flush_kern_cache_all) + mov ip, #0 + mov r2, #VM_EXEC +__flush_whole_cache: + mcr p15, 0, ip, c7, c14, 0 @ clean/invalidate D cache + tst r2, #VM_EXEC + mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache + mcrne p15, 0, ip, c7, c5, 6 @ invalidate BTB + mcrne p15, 0, ip, c7, c10, 4 @ drain write buffer + mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush + mov pc, lr + +/* + * flush_user_cache_range(start, end, flags) + * + * Invalidate a range of cache entries in the specified + * address space. + * + * - start - start address (inclusive, page aligned) + * - end - end address (exclusive, page aligned) + * - flags - vma_area_struct flags describing address space + */ +ENTRY(fa_flush_user_cache_range) + mov ip, #0 + sub r3, r1, r0 @ calculate total size + cmp r3, #CACHE_DLIMIT @ total size >= limit? + bhs __flush_whole_cache @ flush whole D cache + +1: tst r2, #VM_EXEC + mcrne p15, 0, r0, c7, c5, 1 @ invalidate I line + mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + tst r2, #VM_EXEC + mcrne p15, 0, ip, c7, c5, 6 @ invalidate BTB + mcrne p15, 0, ip, c7, c10, 4 @ data write barrier + mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush + mov pc, lr + +/* + * coherent_kern_range(start, end) + * + * Ensure coherency between the Icache and the Dcache in the + * region described by start. If you have non-snooping + * Harvard caches, you need to implement this function. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_coherent_kern_range) + /* fall through */ + +/* + * coherent_user_range(start, end) + * + * Ensure coherency between the Icache and the Dcache in the + * region described by start. If you have non-snooping + * Harvard caches, you need to implement this function. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_coherent_user_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry + mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c5, 6 @ invalidate BTB + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mcr p15, 0, r0, c7, c5, 4 @ prefetch flush + mov pc, lr + +/* + * flush_kern_dcache_page(kaddr) + * + * Ensure that the data held in the page kaddr is written back + * to the page in question. + * + * - kaddr - kernel address (guaranteed to be page aligned) + */ +ENTRY(fa_flush_kern_dcache_page) + add r1, r0, #PAGE_SZ +1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D line + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + +/* + * dma_inv_range(start, end) + * + * Invalidate (discard) the specified virtual address range. + * May not write back any entries. If 'start' or 'end' + * are not cache line aligned, those lines must be written + * back. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_dma_inv_range) + tst r0, #CACHE_DLINESIZE - 1 + bic r0, r0, #CACHE_DLINESIZE - 1 + mcrne p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry + tst r1, #CACHE_DLINESIZE - 1 + bic r1, r1, #CACHE_DLINESIZE - 1 + mcrne p15, 0, r1, c7, c14, 1 @ clean & invalidate D entry +1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + +/* + * dma_clean_range(start, end) + * + * Clean (write back) the specified virtual address range. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_dma_clean_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + +/* + * dma_flush_range(start,end) + * - start - virtual start address of region + * - end - virtual end address of region + */ +ENTRY(fa_dma_flush_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + + __INITDATA + + .type fa_cache_fns, #object +ENTRY(fa_cache_fns) + .long fa_flush_kern_cache_all + .long fa_flush_user_cache_all + .long fa_flush_user_cache_range + .long fa_coherent_kern_range + .long fa_coherent_user_range + .long fa_flush_kern_dcache_page + .long fa_dma_inv_range + .long fa_dma_clean_range + .long fa_dma_flush_range + .size fa_cache_fns, . - fa_cache_fns diff --git a/arch/arm/mm/copypage-fa.c b/arch/arm/mm/copypage-fa.c new file mode 100644 index 000000000000..b2a6008b0111 --- /dev/null +++ b/arch/arm/mm/copypage-fa.c @@ -0,0 +1,86 @@ +/* + * linux/arch/arm/lib/copypage-fa.S + * + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * Based on copypage-v4wb.S: + * Copyright (C) 1995-1999 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include + +/* + * Faraday optimised copy_user_page + */ +static void __naked +fa_copy_user_page(void *kto, const void *kfrom) +{ + asm("\ + stmfd sp!, {r4, lr} @ 2\n\ + mov r2, %0 @ 1\n\ +1: ldmia r1!, {r3, r4, ip, lr} @ 4\n\ + stmia r0, {r3, r4, ip, lr} @ 4\n\ + mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add r0, r0, #16 @ 1\n\ + ldmia r1!, {r3, r4, ip, lr} @ 4\n\ + stmia r0, {r3, r4, ip, lr} @ 4\n\ + mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add r0, r0, #16 @ 1\n\ + subs r2, r2, #1 @ 1\n\ + bne 1b @ 1\n\ + mcr p15, 0, r2, c7, c10, 4 @ 1 drain WB\n\ + ldmfd sp!, {r4, pc} @ 3" + : + : "I" (PAGE_SIZE / 32)); +} + +void fa_copy_user_highpage(struct page *to, struct page *from, + unsigned long vaddr) +{ + void *kto, *kfrom; + + kto = kmap_atomic(to, KM_USER0); + kfrom = kmap_atomic(from, KM_USER1); + fa_copy_user_page(kto, kfrom); + kunmap_atomic(kfrom, KM_USER1); + kunmap_atomic(kto, KM_USER0); +} + +/* + * Faraday optimised clear_user_page + * + * Same story as above. + */ +void fa_clear_user_highpage(struct page *page, unsigned long vaddr) +{ + void *ptr, *kaddr = kmap_atomic(page, KM_USER0); + asm volatile("\ + mov r1, %2 @ 1\n\ + mov r2, #0 @ 1\n\ + mov r3, #0 @ 1\n\ + mov ip, #0 @ 1\n\ + mov lr, #0 @ 1\n\ +1: stmia %0, {r2, r3, ip, lr} @ 4\n\ + mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add %0, %0, #16 @ 1\n\ + stmia %0, {r2, r3, ip, lr} @ 4\n\ + mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add %0, %0, #16 @ 1\n\ + subs r1, r1, #1 @ 1\n\ + bne 1b @ 1\n\ + mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB" + : "=r" (ptr) + : "0" (kaddr), "I" (PAGE_SIZE / 32) + : "r1", "r2", "r3", "ip", "lr"); + kunmap_atomic(kaddr, KM_USER0); +} + +struct cpu_user_fns fa_user_fns __initdata = { + .cpu_clear_user_highpage = fa_clear_user_highpage, + .cpu_copy_user_highpage = fa_copy_user_highpage, +}; diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S new file mode 100644 index 000000000000..08b8a955d5d7 --- /dev/null +++ b/arch/arm/mm/proc-fa526.S @@ -0,0 +1,248 @@ +/* + * linux/arch/arm/mm/proc-fa526.S: MMU functions for FA526 + * + * Written by : Luke Lee + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * + * These are the low level assembler for performing cache and TLB + * functions on the fa526. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "proc-macros.S" + +#define CACHE_DLINESIZE 16 + + .text +/* + * cpu_fa526_proc_init() + */ +ENTRY(cpu_fa526_proc_init) + mov pc, lr + +/* + * cpu_fa526_proc_fin() + */ +ENTRY(cpu_fa526_proc_fin) + stmfd sp!, {lr} + mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE + msr cpsr_c, ip + bl fa_flush_kern_cache_all + mrc p15, 0, r0, c1, c0, 0 @ ctrl register + bic r0, r0, #0x1000 @ ...i............ + bic r0, r0, #0x000e @ ............wca. + mcr p15, 0, r0, c1, c0, 0 @ disable caches + nop + nop + ldmfd sp!, {pc} + +/* + * cpu_fa526_reset(loc) + * + * Perform a soft reset of the system. Put the CPU into the + * same state as it would be if it had been reset, and branch + * to what would be the reset vector. + * + * loc: location to jump to for soft reset + */ + .align 4 +ENTRY(cpu_fa526_reset) +/* TODO: Use CP8 if possible... */ + mov ip, #0 + mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches + mcr p15, 0, ip, c7, c10, 4 @ drain WB +#ifdef CONFIG_MMU + mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs +#endif + mrc p15, 0, ip, c1, c0, 0 @ ctrl register + bic ip, ip, #0x000f @ ............wcam + bic ip, ip, #0x1100 @ ...i...s........ + bic ip, ip, #0x0800 @ BTB off + mcr p15, 0, ip, c1, c0, 0 @ ctrl register + nop + nop + mov pc, r0 + +/* + * cpu_fa526_do_idle() + */ + .align 4 +ENTRY(cpu_fa526_do_idle) + mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt + mov pc, lr + + +ENTRY(cpu_fa526_dcache_clean_area) +1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + add r0, r0, #CACHE_DLINESIZE + subs r1, r1, #CACHE_DLINESIZE + bhi 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +/* =============================== PageTable ============================== */ + +/* + * cpu_fa526_switch_mm(pgd) + * + * Set the translation base pointer to be as described by pgd. + * + * pgd: new page tables + */ + .align 4 +ENTRY(cpu_fa526_switch_mm) +#ifdef CONFIG_MMU + mov ip, #0 +#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH + mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache +#else + mcr p15, 0, ip, c7, c14, 0 @ clean and invalidate whole D cache +#endif + mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache + mcr p15, 0, ip, c7, c5, 6 @ invalidate BTB since mm changed + mcr p15, 0, ip, c7, c10, 4 @ data write barrier + mcr p15, 0, ip, c7, c5, 4 @ prefetch flush + mcr p15, 0, r0, c2, c0, 0 @ load page table pointer + mcr p15, 0, ip, c8, c7, 0 @ invalidate UTLB +#endif + mov pc, lr + +/* + * cpu_fa526_set_pte_ext(ptep, pte, ext) + * + * Set a PTE and flush it out + */ + .align 4 +ENTRY(cpu_fa526_set_pte_ext) +#ifdef CONFIG_MMU + armv3_set_pte_ext + mov r0, r0 + mcr p15, 0, r0, c7, c10, 1 @ clean D entry + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain WB +#endif + mov pc, lr + + __INIT + + .type __fa526_setup, #function +__fa526_setup: + /* On return of this routine, r0 must carry correct flags for CFG register */ + mov r0, #0 + mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 +#ifdef CONFIG_MMU + mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 +#endif + mcr p15, 0, r0, c7, c5, 5 @ invalidate IScratchpad RAM + + mov r0, #1 + mcr p15, 0, r0, c1, c1, 0 @ turn-on ECR + + mov r0, #0 + mcr p15, 0, r0, c7, c5, 6 @ invalidate BTB All + mcr p15, 0, r0, c7, c10, 4 @ data write barrier + mcr p15, 0, r0, c7, c5, 4 @ prefetch flush + + mov r0, #0x1f @ Domains 0, 1 = manager, 2 = client + mcr p15, 0, r0, c3, c0 @ load domain access register + + mrc p15, 0, r0, c1, c0 @ get control register v4 + ldr r5, fa526_cr1_clear + bic r0, r0, r5 + ldr r5, fa526_cr1_set + orr r0, r0, r5 + mov pc, lr + .size __fa526_setup, . - __fa526_setup + + /* + * .RVI ZFRS BLDP WCAM + * ..11 1001 .111 1101 + * + */ + .type fa526_cr1_clear, #object + .type fa526_cr1_set, #object +fa526_cr1_clear: + .word 0x3f3f +fa526_cr1_set: + .word 0x397D + + __INITDATA + +/* + * Purpose : Function pointers used to access above functions - all calls + * come through these + */ + .type fa526_processor_functions, #object +fa526_processor_functions: + .word v4_early_abort + .word pabort_noifar + .word cpu_fa526_proc_init + .word cpu_fa526_proc_fin + .word cpu_fa526_reset + .word cpu_fa526_do_idle + .word cpu_fa526_dcache_clean_area + .word cpu_fa526_switch_mm + .word cpu_fa526_set_pte_ext + .size fa526_processor_functions, . - fa526_processor_functions + + .section ".rodata" + + .type cpu_arch_name, #object +cpu_arch_name: + .asciz "armv4" + .size cpu_arch_name, . - cpu_arch_name + + .type cpu_elf_name, #object +cpu_elf_name: + .asciz "v4" + .size cpu_elf_name, . - cpu_elf_name + + .type cpu_fa526_name, #object +cpu_fa526_name: + .asciz "FA526" + .size cpu_fa526_name, . - cpu_fa526_name + + .align + + .section ".proc.info.init", #alloc, #execinstr + + .type __fa526_proc_info,#object +__fa526_proc_info: + .long 0x66015261 + .long 0xff01fff1 + .long PMD_TYPE_SECT | \ + PMD_SECT_BUFFERABLE | \ + PMD_SECT_CACHEABLE | \ + PMD_BIT4 | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ + .long PMD_TYPE_SECT | \ + PMD_BIT4 | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ + b __fa526_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_HALF + .long cpu_fa526_name + .long fa526_processor_functions + .long fa_tlb_fns + .long fa_user_fns + .long fa_cache_fns + .size __fa526_proc_info, . - __fa526_proc_info diff --git a/arch/arm/mm/tlb-fa.S b/arch/arm/mm/tlb-fa.S new file mode 100644 index 000000000000..9694f1f6f485 --- /dev/null +++ b/arch/arm/mm/tlb-fa.S @@ -0,0 +1,75 @@ +/* + * linux/arch/arm/mm/tlb-fa.S + * + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * Based on tlb-v4wbi.S: + * Copyright (C) 1997-2002 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * ARM architecture version 4, Faraday variation. + * This assume an unified TLBs, with a write buffer, and branch target buffer (BTB) + * + * Processors: FA520 FA526 FA626 + */ +#include +#include +#include +#include +#include "proc-macros.S" + + +/* + * flush_user_tlb_range(start, end, mm) + * + * Invalidate a range of TLB entries in the specified address space. + * + * - start - range start address + * - end - range end address + * - mm - mm_struct describing address space + */ + .align 4 +ENTRY(fa_flush_user_tlb_range) + vma_vm_mm ip, r2 + act_mm r3 @ get current->active_mm + eors r3, ip, r3 @ == mm ? + movne pc, lr @ no, we dont do anything + mov r3, #0 + mcr p15, 0, r3, c7, c10, 4 @ drain WB + bic r0, r0, #0x0ff + bic r0, r0, #0xf00 +1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry + add r0, r0, #PAGE_SZ + cmp r0, r1 + blo 1b + mcr p15, 0, r3, c7, c5, 6 @ invalidate BTB + mcr p15, 0, r3, c7, c10, 4 @ data write barrier + mov pc, lr + + +ENTRY(fa_flush_kern_tlb_range) + mov r3, #0 + mcr p15, 0, r3, c7, c10, 4 @ drain WB + bic r0, r0, #0x0ff + bic r0, r0, #0xf00 +1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry + add r0, r0, #PAGE_SZ + cmp r0, r1 + blo 1b + mcr p15, 0, r3, c7, c5, 6 @ invalidate BTB + mcr p15, 0, r3, c7, c10, 4 @ data write barrier + mcr p15, 0, r3, c7, c5, 4 @ prefetch flush + mov pc, lr + + __INITDATA + + .type fa_tlb_fns, #object +ENTRY(fa_tlb_fns) + .long fa_flush_user_tlb_range + .long fa_flush_kern_tlb_range + .long fa_tlb_flags + .size fa_tlb_fns, . - fa_tlb_fns -- cgit v1.2.3 From 59d3a193f1ec1639db447aa1ceb39cd1811fb36e Mon Sep 17 00:00:00 2001 From: Paulius Zaleckas Date: Thu, 26 Mar 2009 10:06:08 +0200 Subject: ARM: Add Gemini architecture v3 Adds support for Cortina Systems Gemini family CPUs: http://www.cortina-systems.com/products/category/18 v3: - fixed __io(a) to be defined as __typesafe_io(a) v2: - #include -> - remove asm/system.h include - revorked mm.c to use named initializers - removed "empty" dma.h - updated copyrights Signed-off-by: Paulius Zaleckas --- arch/arm/Kconfig | 8 + arch/arm/Makefile | 1 + arch/arm/mach-gemini/Kconfig | 12 + arch/arm/mach-gemini/Makefile | 7 + arch/arm/mach-gemini/Makefile.boot | 9 + arch/arm/mach-gemini/common.h | 27 +++ arch/arm/mach-gemini/devices.c | 92 ++++++++ arch/arm/mach-gemini/include/mach/debug-macro.S | 23 ++ arch/arm/mach-gemini/include/mach/entry-macro.S | 39 ++++ arch/arm/mach-gemini/include/mach/global_reg.h | 278 ++++++++++++++++++++++++ arch/arm/mach-gemini/include/mach/hardware.h | 75 +++++++ arch/arm/mach-gemini/include/mach/io.h | 18 ++ arch/arm/mach-gemini/include/mach/irqs.h | 50 +++++ arch/arm/mach-gemini/include/mach/memory.h | 19 ++ arch/arm/mach-gemini/include/mach/system.h | 37 ++++ arch/arm/mach-gemini/include/mach/timex.h | 13 ++ arch/arm/mach-gemini/include/mach/uncompress.h | 42 ++++ arch/arm/mach-gemini/include/mach/vmalloc.h | 10 + arch/arm/mach-gemini/irq.c | 102 +++++++++ arch/arm/mach-gemini/mm.c | 82 +++++++ arch/arm/mach-gemini/time.c | 89 ++++++++ 21 files changed, 1033 insertions(+) create mode 100644 arch/arm/mach-gemini/Kconfig create mode 100644 arch/arm/mach-gemini/Makefile create mode 100644 arch/arm/mach-gemini/Makefile.boot create mode 100644 arch/arm/mach-gemini/common.h create mode 100644 arch/arm/mach-gemini/devices.c create mode 100644 arch/arm/mach-gemini/include/mach/debug-macro.S create mode 100644 arch/arm/mach-gemini/include/mach/entry-macro.S create mode 100644 arch/arm/mach-gemini/include/mach/global_reg.h create mode 100644 arch/arm/mach-gemini/include/mach/hardware.h create mode 100644 arch/arm/mach-gemini/include/mach/io.h create mode 100644 arch/arm/mach-gemini/include/mach/irqs.h create mode 100644 arch/arm/mach-gemini/include/mach/memory.h create mode 100644 arch/arm/mach-gemini/include/mach/system.h create mode 100644 arch/arm/mach-gemini/include/mach/timex.h create mode 100644 arch/arm/mach-gemini/include/mach/uncompress.h create mode 100644 arch/arm/mach-gemini/include/mach/vmalloc.h create mode 100644 arch/arm/mach-gemini/irq.c create mode 100644 arch/arm/mach-gemini/mm.c create mode 100644 arch/arm/mach-gemini/time.c (limited to 'arch/arm/Makefile') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index dbfdf87f993f..5686f4074dd0 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -275,6 +275,12 @@ config ARCH_EP93XX help This enables support for the Cirrus EP93xx series of CPUs. +config ARCH_GEMINI + bool "Cortina Systems Gemini" + select CPU_FA526 + help + Support for the Cortina Systems Gemini family SoCs + config ARCH_FOOTBRIDGE bool "FootBridge" select CPU_SA110 @@ -598,6 +604,8 @@ source "arch/arm/mach-ep93xx/Kconfig" source "arch/arm/mach-footbridge/Kconfig" +source "arch/arm/mach-gemini/Kconfig" + source "arch/arm/mach-integrator/Kconfig" source "arch/arm/mach-iop32x/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index d29f9260fb1c..56e13bf22027 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -108,6 +108,7 @@ endif machine-$(CONFIG_ARCH_PXA) := pxa machine-$(CONFIG_ARCH_L7200) := l7200 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator + machine-$(CONFIG_ARCH_GEMINI) := gemini textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000 machine-$(CONFIG_ARCH_CLPS711X) := clps711x machine-$(CONFIG_ARCH_IOP32X) := iop32x diff --git a/arch/arm/mach-gemini/Kconfig b/arch/arm/mach-gemini/Kconfig new file mode 100644 index 000000000000..3aff39abb188 --- /dev/null +++ b/arch/arm/mach-gemini/Kconfig @@ -0,0 +1,12 @@ +if ARCH_GEMINI + +menu "Cortina Systems Gemini Implementations" + +endmenu + +config GEMINI_MEM_SWAP + bool "Gemini memory is swapped" + help + Say Y here if Gemini memory is swapped by bootloader. + +endif diff --git a/arch/arm/mach-gemini/Makefile b/arch/arm/mach-gemini/Makefile new file mode 100644 index 000000000000..133e2050685e --- /dev/null +++ b/arch/arm/mach-gemini/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the linux kernel. +# + +# Object file lists. + +obj-y := irq.o mm.o time.o devices.o diff --git a/arch/arm/mach-gemini/Makefile.boot b/arch/arm/mach-gemini/Makefile.boot new file mode 100644 index 000000000000..22a52c228d93 --- /dev/null +++ b/arch/arm/mach-gemini/Makefile.boot @@ -0,0 +1,9 @@ +ifeq ($(CONFIG_GEMINI_MEM_SWAP),y) + zreladdr-y := 0x00008000 +params_phys-y := 0x00000100 +initrd_phys-y := 0x00800000 +else + zreladdr-y := 0x10008000 +params_phys-y := 0x10000100 +initrd_phys-y := 0x10800000 +endif diff --git a/arch/arm/mach-gemini/common.h b/arch/arm/mach-gemini/common.h new file mode 100644 index 000000000000..9c1afa1c5803 --- /dev/null +++ b/arch/arm/mach-gemini/common.h @@ -0,0 +1,27 @@ +/* + * Common Gemini architecture functions + * + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __GEMINI_COMMON_H__ +#define __GEMINI_COMMON_H__ + +struct mtd_partition; + +extern void gemini_map_io(void); +extern void gemini_init_irq(void); +extern void gemini_timer_init(void); + +/* Common platform devices registration functions */ +extern int platform_register_uart(void); +extern int platform_register_pflash(unsigned int size, + struct mtd_partition *parts, + unsigned int nr_parts); + +#endif /* __GEMINI_COMMON_H__ */ diff --git a/arch/arm/mach-gemini/devices.c b/arch/arm/mach-gemini/devices.c new file mode 100644 index 000000000000..6b525253d027 --- /dev/null +++ b/arch/arm/mach-gemini/devices.c @@ -0,0 +1,92 @@ +/* + * Common devices definition for Gemini + * + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +static struct plat_serial8250_port serial_platform_data[] = { + { + .membase = (void *)IO_ADDRESS(GEMINI_UART_BASE), + .mapbase = GEMINI_UART_BASE, + .irq = IRQ_UART, + .uartclk = UART_CLK, + .regshift = 2, + .iotype = UPIO_MEM, + .type = PORT_16550A, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE, + }, + {}, +}; + +static struct platform_device serial_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +int platform_register_uart(void) +{ + return platform_device_register(&serial_device); +} + +static struct resource flash_resource = { + .start = GEMINI_FLASH_BASE, + .flags = IORESOURCE_MEM, +}; + +static struct physmap_flash_data pflash_platform_data = {}; + +static struct platform_device pflash_device = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &pflash_platform_data, + }, + .resource = &flash_resource, + .num_resources = 1, +}; + +int platform_register_pflash(unsigned int size, struct mtd_partition *parts, + unsigned int nr_parts) +{ + unsigned int reg; + + reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS); + + if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL) + return -ENXIO; + + if (reg & FLASH_WIDTH_16BIT) + pflash_platform_data.width = 2; + else + pflash_platform_data.width = 1; + + /* enable parallel flash pins and disable others */ + reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); + reg &= ~PFLASH_PADS_DISABLE; + reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE; + __raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); + + flash_resource.end = flash_resource.start + size - 1; + + pflash_platform_data.parts = parts; + pflash_platform_data.nr_parts = nr_parts; + + return platform_device_register(&pflash_device); +} diff --git a/arch/arm/mach-gemini/include/mach/debug-macro.S b/arch/arm/mach-gemini/include/mach/debug-macro.S new file mode 100644 index 000000000000..d04a6eaeae14 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/debug-macro.S @@ -0,0 +1,23 @@ +/* + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include + + .macro addruart,rx + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + ldreq \rx, =GEMINI_UART_BASE @ physical + ldrne \rx, =IO_ADDRESS(GEMINI_UART_BASE) @ virtual + .endm + +#define UART_SHIFT 2 +#define FLOW_CONTROL +#include diff --git a/arch/arm/mach-gemini/include/mach/entry-macro.S b/arch/arm/mach-gemini/include/mach/entry-macro.S new file mode 100644 index 000000000000..1624f91a2b8b --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/entry-macro.S @@ -0,0 +1,39 @@ +/* + * Low-level IRQ helper macros for Gemini platform. + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#include + +#define IRQ_STATUS 0x14 + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqstat, =IO_ADDRESS(GEMINI_INTERRUPT_BASE + IRQ_STATUS) + ldr \irqnr, [\irqstat] + cmp \irqnr, #0 + beq 2313f + mov \tmp, \irqnr + mov \irqnr, #0 +2312: + tst \tmp, #1 + bne 2313f + add \irqnr, \irqnr, #1 + mov \tmp, \tmp, lsr #1 + cmp \irqnr, #31 + bcc 2312b +2313: + .endm diff --git a/arch/arm/mach-gemini/include/mach/global_reg.h b/arch/arm/mach-gemini/include/mach/global_reg.h new file mode 100644 index 000000000000..de7ff7e849fc --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/global_reg.h @@ -0,0 +1,278 @@ +/* + * This file contains the hardware definitions for Gemini. + * + * Copyright (C) 2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __MACH_GLOBAL_REG_H +#define __MACH_GLOBAL_REG_H + +/* Global Word ID Register*/ +#define GLOBAL_ID 0x00 + +#define CHIP_ID(reg) ((reg) >> 8) +#define CHIP_REVISION(reg) ((reg) & 0xFF) + +/* Global Status Register */ +#define GLOBAL_STATUS 0x04 + +#define CPU_BIG_ENDIAN (1 << 31) +#define PLL_OSC_30M (1 << 30) /* else 60MHz */ + +#define OPERATION_MODE_MASK (0xF << 26) +#define OPM_IDDQ (0xF << 26) +#define OPM_NAND (0xE << 26) +#define OPM_RING (0xD << 26) +#define OPM_DIRECT_BOOT (0xC << 26) +#define OPM_USB1_PHY_TEST (0xB << 26) +#define OPM_USB0_PHY_TEST (0xA << 26) +#define OPM_SATA1_PHY_TEST (0x9 << 26) +#define OPM_SATA0_PHY_TEST (0x8 << 26) +#define OPM_ICE_ARM (0x7 << 26) +#define OPM_ICE_FARADAY (0x6 << 26) +#define OPM_PLL_BYPASS (0x5 << 26) +#define OPM_DEBUG (0x4 << 26) +#define OPM_BURN_IN (0x3 << 26) +#define OPM_MBIST (0x2 << 26) +#define OPM_SCAN (0x1 << 26) +#define OPM_REAL (0x0 << 26) + +#define FLASH_TYPE_MASK (0x3 << 24) +#define FLASH_TYPE_NAND_2K (0x3 << 24) +#define FLASH_TYPE_NAND_512 (0x2 << 24) +#define FLASH_TYPE_PARALLEL (0x1 << 24) +#define FLASH_TYPE_SERIAL (0x0 << 24) +/* if parallel */ +#define FLASH_WIDTH_16BIT (1 << 23) /* else 8 bit */ +/* if serial */ +#define FLASH_ATMEL (1 << 23) /* else STM */ + +#define FLASH_SIZE_MASK (0x3 << 21) +#define NAND_256M (0x3 << 21) /* and more */ +#define NAND_128M (0x2 << 21) +#define NAND_64M (0x1 << 21) +#define NAND_32M (0x0 << 21) +#define ATMEL_16M (0x3 << 21) /* and more */ +#define ATMEL_8M (0x2 << 21) +#define ATMEL_4M_2M (0x1 << 21) +#define ATMEL_1M (0x0 << 21) /* and less */ +#define STM_32M (1 << 22) /* and more */ +#define STM_16M (0 << 22) /* and less */ + +#define FLASH_PARALLEL_HIGH_PIN_CNT (1 << 20) /* else low pin cnt */ + +#define CPU_AHB_RATIO_MASK (0x3 << 18) +#define CPU_AHB_1_1 (0x0 << 18) +#define CPU_AHB_3_2 (0x1 << 18) +#define CPU_AHB_24_13 (0x2 << 18) +#define CPU_AHB_2_1 (0x3 << 18) + +#define REG_TO_AHB_SPEED(reg) ((((reg) >> 15) & 0x7) * 10 + 130) +#define AHB_SPEED_TO_REG(x) ((((x - 130)) / 10) << 15) + +/* it is posible to override some settings, use >> OVERRIDE_xxxx_SHIFT */ +#define OVERRIDE_FLASH_TYPE_SHIFT 16 +#define OVERRIDE_FLASH_WIDTH_SHIFT 16 +#define OVERRIDE_FLASH_SIZE_SHIFT 16 +#define OVERRIDE_CPU_AHB_RATIO_SHIFT 15 +#define OVERRIDE_AHB_SPEED_SHIFT 15 + +/* Global PLL Control Register */ +#define GLOBAL_PLL_CTRL 0x08 + +#define PLL_BYPASS (1 << 31) +#define PLL_POWER_DOWN (1 << 8) +#define PLL_CONTROL_Q (0x1F << 0) + +/* Global Soft Reset Control Register */ +#define GLOBAL_RESET 0x0C + +#define RESET_GLOBAL (1 << 31) +#define RESET_CPU1 (1 << 30) +#define RESET_TVE (1 << 28) +#define RESET_SATA1 (1 << 27) +#define RESET_SATA0 (1 << 26) +#define RESET_CIR (1 << 25) +#define RESET_EXT_DEV (1 << 24) +#define RESET_WD (1 << 23) +#define RESET_GPIO2 (1 << 22) +#define RESET_GPIO1 (1 << 21) +#define RESET_GPIO0 (1 << 20) +#define RESET_SSP (1 << 19) +#define RESET_UART (1 << 18) +#define RESET_TIMER (1 << 17) +#define RESET_RTC (1 << 16) +#define RESET_INT1 (1 << 15) +#define RESET_INT0 (1 << 14) +#define RESET_LCD (1 << 13) +#define RESET_LPC (1 << 12) +#define RESET_APB (1 << 11) +#define RESET_DMA (1 << 10) +#define RESET_USB1 (1 << 9) +#define RESET_USB0 (1 << 8) +#define RESET_PCI (1 << 7) +#define RESET_GMAC1 (1 << 6) +#define RESET_GMAC0 (1 << 5) +#define RESET_SECURITY (1 << 4) +#define RESET_RAID (1 << 3) +#define RESET_IDE (1 << 2) +#define RESET_FLASH (1 << 1) +#define RESET_DRAM (1 << 0) + +/* Global IO Pad Driving Capability Control Register */ +#define GLOBAL_IO_DRIVING_CTRL 0x10 + +#define DRIVING_CURRENT_MASK 0x3 + +/* here 00-4mA, 01-8mA, 10-12mA, 11-16mA */ +#define GPIO1_PADS_31_28_SHIFT 28 +#define GPIO0_PADS_31_16_SHIFT 26 +#define GPIO0_PADS_15_0_SHIFT 24 +#define PCI_AND_EXT_RESET_PADS_SHIFT 22 +#define IDE_PADS_SHIFT 20 +#define GMAC1_PADS_SHIFT 18 +#define GMAC0_PADS_SHIFT 16 +/* DRAM is not in mA and poorly documented */ +#define DRAM_CLOCK_PADS_SHIFT 8 +#define DRAM_DATA_PADS_SHIFT 4 +#define DRAM_CONTROL_PADS_SHIFT 0 + +/* Global IO Pad Slew Rate Control Register */ +#define GLOBAL_IO_SLEW_RATE_CTRL 0x14 + +#define GPIO1_PADS_31_28_SLOW (1 << 10) +#define GPIO0_PADS_31_16_SLOW (1 << 9) +#define GPIO0_PADS_15_0_SLOW (1 << 8) +#define PCI_PADS_SLOW (1 << 7) +#define IDE_PADS_SLOW (1 << 6) +#define GMAC1_PADS_SLOW (1 << 5) +#define GMAC0_PADS_SLOW (1 << 4) +#define DRAM_CLOCK_PADS_SLOW (1 << 1) +#define DRAM_IO_PADS_SLOW (1 << 0) + +/* + * General skew control defines + * 16 steps, each step is around 0.2ns + */ +#define SKEW_MASK 0xF + +/* Global IDE PAD Skew Control Register */ +#define GLOBAL_IDE_SKEW_CTRL 0x18 + +#define IDE1_HOST_STROBE_DELAY_SHIFT 28 +#define IDE1_DEVICE_STROBE_DELAY_SHIFT 24 +#define IDE1_OUTPUT_IO_SKEW_SHIFT 20 +#define IDE1_INPUT_IO_SKEW_SHIFT 16 +#define IDE0_HOST_STROBE_DELAY_SHIFT 12 +#define IDE0_DEVICE_STROBE_DELAY_SHIFT 8 +#define IDE0_OUTPUT_IO_SKEW_SHIFT 4 +#define IDE0_INPUT_IO_SKEW_SHIFT 0 + +/* Global GMAC Control Pad Skew Control Register */ +#define GLOBAL_GMAC_CTRL_SKEW_CTRL 0x1C + +#define GMAC1_TXC_SKEW_SHIFT 28 +#define GMAC1_TXEN_SKEW_SHIFT 24 +#define GMAC1_RXC_SKEW_SHIFT 20 +#define GMAC1_RXDV_SKEW_SHIFT 16 +#define GMAC0_TXC_SKEW_SHIFT 12 +#define GMAC0_TXEN_SKEW_SHIFT 8 +#define GMAC0_RXC_SKEW_SHIFT 4 +#define GMAC0_RXDV_SKEW_SHIFT 0 + +/* Global GMAC0 Data PAD Skew Control Register */ +#define GLOBAL_GMAC0_DATA_SKEW_CTRL 0x20 +/* Global GMAC1 Data PAD Skew Control Register */ +#define GLOBAL_GMAC1_DATA_SKEW_CTRL 0x24 + +#define GMAC_TXD_SKEW_SHIFT(x) (((x) * 4) + 16) +#define GMAC_RXD_SKEW_SHIFT(x) ((x) * 4) + +/* CPU has two AHB busses. */ + +/* Global Arbitration0 Control Register */ +#define GLOBAL_ARBITRATION0_CTRL 0x28 + +#define BOOT_CONTROLLER_HIGH_PRIO (1 << 3) +#define DMA_BUS1_HIGH_PRIO (1 << 2) +#define CPU0_HIGH_PRIO (1 << 0) + +/* Global Arbitration1 Control Register */ +#define GLOBAL_ARBITRATION1_CTRL 0x2C + +#define TVE_HIGH_PRIO (1 << 9) +#define PCI_HIGH_PRIO (1 << 8) +#define USB1_HIGH_PRIO (1 << 7) +#define USB0_HIGH_PRIO (1 << 6) +#define GMAC1_HIGH_PRIO (1 << 5) +#define GMAC0_HIGH_PRIO (1 << 4) +#define SECURITY_HIGH_PRIO (1 << 3) +#define RAID_HIGH_PRIO (1 << 2) +#define IDE_HIGH_PRIO (1 << 1) +#define DMA_BUS2_HIGH_PRIO (1 << 0) + +/* Common bits for both arbitration registers */ +#define BURST_LENGTH_SHIFT 16 +#define BURST_LENGTH_MASK (0x3F << 16) + +/* Miscellaneous Control Register */ +#define GLOBAL_MISC_CTRL 0x30 + +#define MEMORY_SPACE_SWAP (1 << 31) +#define USB1_PLUG_MINIB (1 << 30) /* else plug is mini-A */ +#define USB0_PLUG_MINIB (1 << 29) +#define GMAC_GMII (1 << 28) +#define GMAC_1_ENABLE (1 << 27) +/* TODO: define ATA/SATA bits */ +#define USB1_VBUS_ON (1 << 23) +#define USB0_VBUS_ON (1 << 22) +#define APB_CLKOUT_ENABLE (1 << 21) +#define TVC_CLKOUT_ENABLE (1 << 20) +#define EXT_CLKIN_ENABLE (1 << 19) +#define PCI_66MHZ (1 << 18) /* else 33 MHz */ +#define PCI_CLKOUT_ENABLE (1 << 17) +#define LPC_CLKOUT_ENABLE (1 << 16) +#define USB1_WAKEUP_ON (1 << 15) +#define USB0_WAKEUP_ON (1 << 14) +/* TODO: define PCI idle detect bits */ +#define TVC_PADS_ENABLE (1 << 9) +#define SSP_PADS_ENABLE (1 << 8) +#define LCD_PADS_ENABLE (1 << 7) +#define LPC_PADS_ENABLE (1 << 6) +#define PCI_PADS_ENABLE (1 << 5) +#define IDE_PADS_ENABLE (1 << 4) +#define DRAM_PADS_POWER_DOWN (1 << 3) +#define NAND_PADS_DISABLE (1 << 2) +#define PFLASH_PADS_DISABLE (1 << 1) +#define SFLASH_PADS_DISABLE (1 << 0) + +/* Global Clock Control Register */ +#define GLOBAL_CLOCK_CTRL 0x34 + +#define POWER_STATE_G0 (1 << 31) +#define POWER_STATE_S1 (1 << 30) /* else it is S3/S4 state */ +#define SECURITY_APB_AHB (1 << 29) +/* else Security APB clk will be 0.75xAHB */ +/* TODO: TVC clock divider */ +#define PCI_CLKRUN_ENABLE (1 << 16) +#define BOOT_CLK_DISABLE (1 << 13) +#define TVC_CLK_DISABLE (1 << 12) +#define FLASH_CLK_DISABLE (1 << 11) +#define DDR_CLK_DISABLE (1 << 10) +#define PCI_CLK_DISABLE (1 << 9) +#define IDE_CLK_DISABLE (1 << 8) +#define USB1_CLK_DISABLE (1 << 7) +#define USB0_CLK_DISABLE (1 << 6) +#define SATA1_CLK_DISABLE (1 << 5) +#define SATA0_CLK_DISABLE (1 << 4) +#define GMAC1_CLK_DISABLE (1 << 3) +#define GMAC0_CLK_DISABLE (1 << 2) +#define SECURITY_CLK_DISABLE (1 << 1) + +/* TODO: other registers definitions if needed */ + +#endif /* __MACH_GLOBAL_REG_H */ diff --git a/arch/arm/mach-gemini/include/mach/hardware.h b/arch/arm/mach-gemini/include/mach/hardware.h new file mode 100644 index 000000000000..de6752674c05 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/hardware.h @@ -0,0 +1,75 @@ +/* + * This file contains the hardware definitions for Gemini. + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __MACH_HARDWARE_H +#define __MACH_HARDWARE_H + +/* + * Memory Map definitions + */ +/* FIXME: Does it really swap SRAM like this? */ +#ifdef CONFIG_GEMINI_MEM_SWAP +# define GEMINI_DRAM_BASE 0x00000000 +# define GEMINI_SRAM_BASE 0x20000000 +#else +# define GEMINI_SRAM_BASE 0x00000000 +# define GEMINI_DRAM_BASE 0x10000000 +#endif +#define GEMINI_FLASH_BASE 0x30000000 +#define GEMINI_GLOBAL_BASE 0x40000000 +#define GEMINI_WAQTCHDOG_BASE 0x41000000 +#define GEMINI_UART_BASE 0x42000000 +#define GEMINI_TIMER_BASE 0x43000000 +#define GEMINI_LCD_BASE 0x44000000 +#define GEMINI_RTC_BASE 0x45000000 +#define GEMINI_SATA_BASE 0x46000000 +#define GEMINI_LPC_HOST_BASE 0x47000000 +#define GEMINI_LPC_IO_BASE 0x47800000 +#define GEMINI_INTERRUPT_BASE 0x48000000 +/* TODO: Different interrupt controlers when SMP + * #define GEMINI_INTERRUPT0_BASE 0x48000000 + * #define GEMINI_INTERRUPT1_BASE 0x49000000 + */ +#define GEMINI_SSP_CTRL_BASE 0x4A000000 +#define GEMINI_POWER_CTRL_BASE 0x4B000000 +#define GEMINI_CIR_BASE 0x4C000000 +#define GEMINI_GPIO_BASE(x) (0x4D000000 + (x) * 0x1000000) +#define GEMINI_PCI_IO_BASE 0x50000000 +#define GEMINI_PCI_MEM_BASE 0x58000000 +#define GEMINI_TOE_BASE 0x60000000 +#define GEMINI_GMAC0_BASE 0x6000A000 +#define GEMINI_GMAC1_BASE 0x6000E000 +#define GEMINI_SECURITY_BASE 0x62000000 +#define GEMINI_IDE0_BASE 0x63000000 +#define GEMINI_IDE1_BASE 0x63400000 +#define GEMINI_RAID_BASE 0x64000000 +#define GEMINI_FLASH_CTRL_BASE 0x65000000 +#define GEMINI_DRAM_CTRL_BASE 0x66000000 +#define GEMINI_GENERAL_DMA_BASE 0x67000000 +#define GEMINI_USB0_BASE 0x68000000 +#define GEMINI_USB1_BASE 0x69000000 +#define GEMINI_BIG_ENDIAN_BASE 0x80000000 + +#define GEMINI_TIMER1_BASE GEMINI_TIMER_BASE +#define GEMINI_TIMER2_BASE (GEMINI_TIMER_BASE + 0x10) +#define GEMINI_TIMER3_BASE (GEMINI_TIMER_BASE + 0x20) + +/* + * UART Clock when System clk is 150MHz + */ +#define UART_CLK 48000000 + +/* + * macro to get at IO space when running virtually + */ +#define IO_ADDRESS(x) ((((x) & 0xFFF00000) >> 4) | ((x) & 0x000FFFFF) | 0xF0000000) + +#endif diff --git a/arch/arm/mach-gemini/include/mach/io.h b/arch/arm/mach-gemini/include/mach/io.h new file mode 100644 index 000000000000..c548056b98b2 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/io.h @@ -0,0 +1,18 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __MACH_IO_H +#define __MACH_IO_H + +#define IO_SPACE_LIMIT 0xffffffff + +#define __io(a) __typesafe_io(a) +#define __mem_pci(a) (a) + +#endif /* __MACH_IO_H */ diff --git a/arch/arm/mach-gemini/include/mach/irqs.h b/arch/arm/mach-gemini/include/mach/irqs.h new file mode 100644 index 000000000000..c7728ac458f3 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/irqs.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __MACH_IRQS_H__ +#define __MACH_IRQS_H__ + +#define IRQ_SERIRQ1 31 +#define IRQ_SERIRQ0 30 +#define IRQ_PCID 29 +#define IRQ_PCIC 28 +#define IRQ_PCIB 27 +#define IRQ_PWR 26 +#define IRQ_CIR 25 +#define IRQ_GPIO(x) (22 + (x)) +#define IRQ_SSP 21 +#define IRQ_LPC 20 +#define IRQ_LCD 19 +#define IRQ_UART 18 +#define IRQ_RTC 17 +#define IRQ_TIMER3 16 +#define IRQ_TIMER2 15 +#define IRQ_TIMER1 14 +#define IRQ_FLASH 12 +#define IRQ_USB1 11 +#define IRQ_USB0 10 +#define IRQ_DMA 9 +#define IRQ_PCI 8 +#define IRQ_IPSEC 7 +#define IRQ_RAID 6 +#define IRQ_IDE1 5 +#define IRQ_IDE0 4 +#define IRQ_WATCHDOG 3 +#define IRQ_GMAC1 2 +#define IRQ_GMAC0 1 +#define IRQ_IPI 0 + +#define NORMAL_IRQ_NUM 32 + +#define ARCH_TIMER_IRQ IRQ_TIMER2 + +#define NR_IRQS NORMAL_IRQ_NUM + +#endif /* __MACH_IRQS_H__ */ diff --git a/arch/arm/mach-gemini/include/mach/memory.h b/arch/arm/mach-gemini/include/mach/memory.h new file mode 100644 index 000000000000..2d14d5bf1f9f --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/memory.h @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __MACH_MEMORY_H +#define __MACH_MEMORY_H + +#ifdef CONFIG_GEMINI_MEM_SWAP +# define PHYS_OFFSET UL(0x00000000) +#else +# define PHYS_OFFSET UL(0x10000000) +#endif + +#endif /* __MACH_MEMORY_H */ diff --git a/arch/arm/mach-gemini/include/mach/system.h b/arch/arm/mach-gemini/include/mach/system.h new file mode 100644 index 000000000000..bbbd72767a02 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/system.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __MACH_SYSTEM_H +#define __MACH_SYSTEM_H + +#include +#include +#include + +static inline void arch_idle(void) +{ + /* + * Because of broken hardware we have to enable interrupts or the CPU + * will never wakeup... Acctualy it is not very good to enable + * interrupts here since scheduler can miss a tick, but there is + * no other way around this. Platforms that needs it for power saving + * should call enable_hlt() in init code, since by default it is + * disabled. + */ + local_irq_enable(); + cpu_do_idle(); +} + +static inline void arch_reset(char mode) +{ + __raw_writel(RESET_GLOBAL | RESET_CPU1, + IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_RESET); +} + +#endif /* __MACH_SYSTEM_H */ diff --git a/arch/arm/mach-gemini/include/mach/timex.h b/arch/arm/mach-gemini/include/mach/timex.h new file mode 100644 index 000000000000..dc5690ba975c --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/timex.h @@ -0,0 +1,13 @@ +/* + * Gemini timex specifications + * + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +/* When AHB bus frequency is 150MHz */ +#define CLOCK_TICK_RATE 38000000 diff --git a/arch/arm/mach-gemini/include/mach/uncompress.h b/arch/arm/mach-gemini/include/mach/uncompress.h new file mode 100644 index 000000000000..59c5df7e716c --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/uncompress.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * Based on mach-pxa/include/mach/uncompress.h: + * Copyright: (C) 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __MACH_UNCOMPRESS_H +#define __MACH_UNCOMPRESS_H + +#include +#include + +static volatile unsigned long *UART = (unsigned long *)GEMINI_UART_BASE; + +/* + * The following code assumes the serial port has already been + * initialized by the bootloader. If you didn't setup a port in + * your bootloader then nothing will appear (which might be desired). + */ +static inline void putc(char c) +{ + while (!(UART[UART_LSR] & UART_LSR_THRE)) + barrier(); + UART[UART_TX] = c; +} + +#define flush() do { } while (0) + +/* + * nothing to do + */ +#define arch_decomp_setup() + +#define arch_decomp_wdog() + +#endif /* __MACH_UNCOMPRESS_H */ diff --git a/arch/arm/mach-gemini/include/mach/vmalloc.h b/arch/arm/mach-gemini/include/mach/vmalloc.h new file mode 100644 index 000000000000..83e536d9436c --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/vmalloc.h @@ -0,0 +1,10 @@ +/* + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#define VMALLOC_END 0xF0000000 diff --git a/arch/arm/mach-gemini/irq.c b/arch/arm/mach-gemini/irq.c new file mode 100644 index 000000000000..9e613ca8120d --- /dev/null +++ b/arch/arm/mach-gemini/irq.c @@ -0,0 +1,102 @@ +/* + * Interrupt routines for Gemini + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IRQ_SOURCE(base_addr) (base_addr + 0x00) +#define IRQ_MASK(base_addr) (base_addr + 0x04) +#define IRQ_CLEAR(base_addr) (base_addr + 0x08) +#define IRQ_TMODE(base_addr) (base_addr + 0x0C) +#define IRQ_TLEVEL(base_addr) (base_addr + 0x10) +#define IRQ_STATUS(base_addr) (base_addr + 0x14) +#define FIQ_SOURCE(base_addr) (base_addr + 0x20) +#define FIQ_MASK(base_addr) (base_addr + 0x24) +#define FIQ_CLEAR(base_addr) (base_addr + 0x28) +#define FIQ_TMODE(base_addr) (base_addr + 0x2C) +#define FIQ_LEVEL(base_addr) (base_addr + 0x30) +#define FIQ_STATUS(base_addr) (base_addr + 0x34) + +static void gemini_ack_irq(unsigned int irq) +{ + __raw_writel(1 << irq, IRQ_CLEAR(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static void gemini_mask_irq(unsigned int irq) +{ + unsigned int mask; + + mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + mask &= ~(1 << irq); + __raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static void gemini_unmask_irq(unsigned int irq) +{ + unsigned int mask; + + mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + mask |= (1 << irq); + __raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static struct irq_chip gemini_irq_chip = { + .name = "INTC", + .ack = gemini_ack_irq, + .mask = gemini_mask_irq, + .unmask = gemini_unmask_irq, +}; + +static struct resource irq_resource = { + .name = "irq_handler", + .start = IO_ADDRESS(GEMINI_INTERRUPT_BASE), + .end = IO_ADDRESS(FIQ_STATUS(GEMINI_INTERRUPT_BASE)) + 4, +}; + +void __init gemini_init_irq(void) +{ + unsigned int i, mode = 0, level = 0; + + /* + * Disable arch_idle() by default since it is buggy + * For more info see arch/arm/mach-gemini/include/mach/system.h + */ + disable_hlt(); + + request_resource(&iomem_resource, &irq_resource); + + for (i = 0; i < NR_IRQS; i++) { + set_irq_chip(i, &gemini_irq_chip); + if((i >= IRQ_TIMER1 && i <= IRQ_TIMER3) || (i >= IRQ_SERIRQ0 && i <= IRQ_SERIRQ1)) { + set_irq_handler(i, handle_edge_irq); + mode |= 1 << i; + level |= 1 << i; + } else { + set_irq_handler(i, handle_level_irq); + } + set_irq_flags(i, IRQF_VALID | IRQF_PROBE); + } + + /* Disable all interrupts */ + __raw_writel(0, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + __raw_writel(0, FIQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + + /* Set interrupt mode */ + __raw_writel(mode, IRQ_TMODE(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + __raw_writel(level, IRQ_TLEVEL(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} diff --git a/arch/arm/mach-gemini/mm.c b/arch/arm/mach-gemini/mm.c new file mode 100644 index 000000000000..51948242ec09 --- /dev/null +++ b/arch/arm/mach-gemini/mm.c @@ -0,0 +1,82 @@ +/* + * Static mappings for Gemini + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include +#include + +#include + +#include + +/* Page table mapping for I/O region */ +static struct map_desc gemini_io_desc[] __initdata = { + { + .virtual = IO_ADDRESS(GEMINI_GLOBAL_BASE), + .pfn =__phys_to_pfn(GEMINI_GLOBAL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_UART_BASE), + .pfn = __phys_to_pfn(GEMINI_UART_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_TIMER_BASE), + .pfn = __phys_to_pfn(GEMINI_TIMER_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_INTERRUPT_BASE), + .pfn = __phys_to_pfn(GEMINI_INTERRUPT_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_POWER_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_POWER_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(0)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(0)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(1)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(1)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(2)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(2)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_FLASH_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_FLASH_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_DRAM_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_DRAM_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GENERAL_DMA_BASE), + .pfn = __phys_to_pfn(GEMINI_GENERAL_DMA_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, +}; + +void __init gemini_map_io(void) +{ + iotable_init(gemini_io_desc, ARRAY_SIZE(gemini_io_desc)); +} diff --git a/arch/arm/mach-gemini/time.c b/arch/arm/mach-gemini/time.c new file mode 100644 index 000000000000..21dc5a89d1c4 --- /dev/null +++ b/arch/arm/mach-gemini/time.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include +#include +#include +#include +#include +#include + +/* + * Register definitions for the timers + */ +#define TIMER_COUNT(BASE_ADDR) (BASE_ADDR + 0x00) +#define TIMER_LOAD(BASE_ADDR) (BASE_ADDR + 0x04) +#define TIMER_MATCH1(BASE_ADDR) (BASE_ADDR + 0x08) +#define TIMER_MATCH2(BASE_ADDR) (BASE_ADDR + 0x0C) +#define TIMER_CR(BASE_ADDR) (BASE_ADDR + 0x30) + +#define TIMER_1_CR_ENABLE (1 << 0) +#define TIMER_1_CR_CLOCK (1 << 1) +#define TIMER_1_CR_INT (1 << 2) +#define TIMER_2_CR_ENABLE (1 << 3) +#define TIMER_2_CR_CLOCK (1 << 4) +#define TIMER_2_CR_INT (1 << 5) +#define TIMER_3_CR_ENABLE (1 << 6) +#define TIMER_3_CR_CLOCK (1 << 7) +#define TIMER_3_CR_INT (1 << 8) + +/* + * IRQ handler for the timer + */ +static irqreturn_t gemini_timer_interrupt(int irq, void *dev_id) +{ + timer_tick(); + + return IRQ_HANDLED; +} + +static struct irqaction gemini_timer_irq = { + .name = "Gemini Timer Tick", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = gemini_timer_interrupt, +}; + +/* + * Set up timer interrupt, and return the current time in seconds. + */ +void __init gemini_timer_init(void) +{ + unsigned int tick_rate, reg_v; + + reg_v = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE + GLOBAL_STATUS)); + tick_rate = REG_TO_AHB_SPEED(reg_v) * 1000000; + + printk(KERN_INFO "Bus: %dMHz", tick_rate / 1000000); + + tick_rate /= 6; /* APB bus run AHB*(1/6) */ + + switch(reg_v & CPU_AHB_RATIO_MASK) { + case CPU_AHB_1_1: + printk(KERN_CONT "(1/1)\n"); + break; + case CPU_AHB_3_2: + printk(KERN_CONT "(3/2)\n"); + break; + case CPU_AHB_24_13: + printk(KERN_CONT "(24/13)\n"); + break; + case CPU_AHB_2_1: + printk(KERN_CONT "(2/1)\n"); + break; + } + + /* + * Make irqs happen for the system timer + */ + setup_irq(IRQ_TIMER2, &gemini_timer_irq); + /* Start the timer */ + __raw_writel(tick_rate / HZ, TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER2_BASE))); + __raw_writel(tick_rate / HZ, TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER2_BASE))); + __raw_writel(TIMER_2_CR_ENABLE | TIMER_2_CR_INT, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); +} -- cgit v1.2.3