diff options
Diffstat (limited to 'arch/arm')
40 files changed, 1669 insertions, 2 deletions
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 <linux/init.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <mach/addr-map.h> + +#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 <linux/module.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <mach/regs-apbc.h> +#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 <asm/clkdev.h> + +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 <linux/init.h> +#include <linux/kernel.h> + +#include <asm/page.h> +#include <asm/mach/map.h> +#include <mach/addr-map.h> + +#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 <linux/init.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> + +#include <asm/irq.h> +#include <mach/devices.h> + +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 <asm/cputype.h> + +/* + * 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 <mach/addr-map.h> + + .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 <asm/hardware/debug-8250.S> 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 <linux/types.h> + +#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 <mach/addr-map.h> + +#define DMAC_REGS_VIRT (APB_VIRT_BASE + 0x00000) + +#include <plat/dma.h> +#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 <mach/regs-icu.h> + + .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 <mach/devices.h> + +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 <mach/addr-map.h> + +#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 <mach/addr-map.h> + +#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 <mach/addr-map.h> + +#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 <mach/addr-map.h> + +#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 <linux/serial_reg.h> +#include <mach/addr-map.h> + +#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 <bin.yang@marvell.com> + * 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 <linux/init.h> +#include <linux/irq.h> +#include <linux/io.h> + +#include <mach/regs-icu.h> + +#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 <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/clk.h> + +#include <asm/mach/time.h> +#include <mach/addr-map.h> +#include <mach/cputype.h> +#include <mach/regs-apbc.h> +#include <mach/irqs.h> +#include <mach/dma.h> +#include <mach/devices.h> + +#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 <Jason.chagas@marvell.com> + * 2008-10-08: Bin Yang <bin.yang@marvell.com> + * + * 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 <linux/init.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/clockchips.h> + +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/sched.h> +#include <linux/cnt32_to_63.h> + +#include <mach/addr-map.h> +#include <mach/regs-timers.h> +#include <mach/irqs.h> + +#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 <linux/linkage.h> +#include <linux/init.h> +#include <asm/assembler.h> +#include <asm/hwcap.h> +#include <asm/pgtable-hwdef.h> +#include <asm/pgtable.h> +#include <asm/page.h> +#include <asm/ptrace.h> +#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 |