diff options
| -rw-r--r-- | arch/powerpc/boot/Makefile | 5 | ||||
| -rw-r--r-- | arch/powerpc/boot/cuboot-52xx.c | 59 | ||||
| -rw-r--r-- | arch/powerpc/boot/mpc52xx-psc.c | 69 | ||||
| -rw-r--r-- | arch/powerpc/boot/ops.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/boot/serial.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/52xx/Kconfig | 1 |
6 files changed, 135 insertions, 2 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index c1582b62911c..b63e423428c7 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -45,8 +45,8 @@ src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ ns16550.c serial.c simple_alloc.c div64.S util.S \ gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \ 4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \ - cpm-serial.c stdlib.c -src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \ + cpm-serial.c stdlib.c mpc52xx-psc.c +src-plat := of.c cuboot-52xx.c cuboot-83xx.c cuboot-85xx.c holly.c \ cuboot-ebony.c treeboot-ebony.c prpmc2800.c \ ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \ cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c @@ -143,6 +143,7 @@ image-$(CONFIG_DEFAULT_UIMAGE) += uImage ifneq ($(CONFIG_DEVICE_TREE),"") image-$(CONFIG_PPC_8xx) += cuImage.8xx image-$(CONFIG_8260) += cuImage.pq2 +image-$(CONFIG_PPC_MPC52xx) += cuImage.52xx image-$(CONFIG_PPC_83xx) += cuImage.83xx image-$(CONFIG_PPC_85xx) += cuImage.85xx image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony diff --git a/arch/powerpc/boot/cuboot-52xx.c b/arch/powerpc/boot/cuboot-52xx.c new file mode 100644 index 000000000000..9256a26d40e4 --- /dev/null +++ b/arch/powerpc/boot/cuboot-52xx.c @@ -0,0 +1,59 @@ +/* + * Old U-boot compatibility for MPC5200 + * + * Author: Grant Likely <grant.likely@secretlab.ca> + * + * Copyright (c) 2007 Secret Lab Technologies Ltd. + * Copyright (c) 2007 Freescale Semiconductor, 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 "ops.h" +#include "stdio.h" +#include "io.h" +#include "cuboot.h" + +#define TARGET_PPC_MPC52xx +#include "ppcboot.h" + +static bd_t bd; + +static void platform_fixups(void) +{ + void *soc, *reg; + int div; + u32 sysfreq; + + + dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); + dt_fixup_mac_addresses(bd.bi_enetaddr); + dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq); + + /* Unfortunately, the specific model number is encoded in the + * soc node name in existing dts files -- once that is fixed, + * this can do a simple path lookup. + */ + soc = find_node_by_devtype(NULL, "soc"); + if (soc) { + setprop(soc, "bus-frequency", &bd.bi_ipbfreq, + sizeof(bd.bi_ipbfreq)); + + if (!dt_xlate_reg(soc, 0, (void*)®, NULL)) + return; + div = in_8(reg + 0x204) & 0x0020 ? 8 : 4; + sysfreq = bd.bi_busfreq * div; + setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq)); + } +} + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + CUBOOT_INIT(); + ft_init(_dtb_start, _dtb_end - _dtb_start, 32); + serial_console_init(); + platform_ops.fixups = platform_fixups; +} diff --git a/arch/powerpc/boot/mpc52xx-psc.c b/arch/powerpc/boot/mpc52xx-psc.c new file mode 100644 index 000000000000..1074626e6a37 --- /dev/null +++ b/arch/powerpc/boot/mpc52xx-psc.c @@ -0,0 +1,69 @@ +/* + * MPC5200 PSC serial console support. + * + * Author: Grant Likely <grant.likely@secretlab.ca> + * + * Copyright (c) 2007 Secret Lab Technologies Ltd. + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * + * It is assumed that the firmware (or the platform file) has already set + * up the port. + */ + +#include "types.h" +#include "io.h" +#include "ops.h" + +/* Programmable Serial Controller (PSC) status register bits */ +#define MPC52xx_PSC_SR 0x04 +#define MPC52xx_PSC_SR_RXRDY 0x0100 +#define MPC52xx_PSC_SR_RXFULL 0x0200 +#define MPC52xx_PSC_SR_TXRDY 0x0400 +#define MPC52xx_PSC_SR_TXEMP 0x0800 + +#define MPC52xx_PSC_BUFFER 0x0C + +static void *psc; + +static int psc_open(void) +{ + /* Assume the firmware has already configured the PSC into + * uart mode */ + return 0; +} + +static void psc_putc(unsigned char c) +{ + while (!(in_be16(psc + MPC52xx_PSC_SR) & MPC52xx_PSC_SR_TXRDY)) ; + out_8(psc + MPC52xx_PSC_BUFFER, c); +} + +static unsigned char psc_tstc(void) +{ + return (in_be16(psc + MPC52xx_PSC_SR) & MPC52xx_PSC_SR_RXRDY) != 0; +} + +static unsigned char psc_getc(void) +{ + while (!(in_be16(psc + MPC52xx_PSC_SR) & MPC52xx_PSC_SR_RXRDY)) ; + return in_8(psc + MPC52xx_PSC_BUFFER); +} + +int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp) +{ + int n; + + /* Get the base address of the psc registers */ + n = getprop(devp, "virtual-reg", &psc, sizeof(psc)); + if (n != sizeof(psc)) { + if (!dt_xlate_reg(devp, 0, (void *)&psc, NULL)) + return -1; + } + + scdp->open = psc_open; + scdp->putc = psc_putc; + scdp->getc = psc_getc; + scdp->tstc = psc_tstc; + + return 0; +} diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h index 703255bf0089..f639fcab2c44 100644 --- a/arch/powerpc/boot/ops.h +++ b/arch/powerpc/boot/ops.h @@ -84,6 +84,7 @@ int serial_console_init(void); int ns16550_console_init(void *devp, struct serial_console_data *scdp); int mpsc_console_init(void *devp, struct serial_console_data *scdp); int cpm_console_init(void *devp, struct serial_console_data *scdp); +int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp); void *simple_alloc_init(char *base, unsigned long heap_size, unsigned long granularity, unsigned long max_allocs); extern void flush_cache(void *, unsigned long); diff --git a/arch/powerpc/boot/serial.c b/arch/powerpc/boot/serial.c index d47f8e0b4b81..95e08e4ddcd2 100644 --- a/arch/powerpc/boot/serial.c +++ b/arch/powerpc/boot/serial.c @@ -126,6 +126,8 @@ int serial_console_init(void) dt_is_compatible(devp, "fsl,cpm2-scc-uart") || dt_is_compatible(devp, "fsl,cpm2-smc-uart")) rc = cpm_console_init(devp, &serial_cd); + else if (dt_is_compatible(devp, "mpc5200-psc-uart")) + rc = mpc5200_psc_console_init(devp, &serial_cd); /* Add other serial console driver calls here */ diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig index 3ffaa066c2c8..9ddf251b192b 100644 --- a/arch/powerpc/platforms/52xx/Kconfig +++ b/arch/powerpc/platforms/52xx/Kconfig @@ -30,6 +30,7 @@ config PPC_EFIKA config PPC_LITE5200 bool "Freescale Lite5200 Eval Board" depends on PPC_MULTIPLATFORM && PPC32 + select WANT_DEVICE_TREE select PPC_MPC5200 default n |