From: Wu Zhangjin Date: Thu, 2 Jul 2009 15:22:36 +0000 (+0800) Subject: MIPS: Loongson: Split the implementation of prom and setup parts X-Git-Tag: v2.6.32-rc1~658^2~31 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bd92aa013e8fcd17328ec8e060477761cf3380d9;p=platform%2Fkernel%2Flinux-exynos.git MIPS: Loongson: Split the implementation of prom and setup parts This patch split the old initilization and setup implementation to several file, one file one logic function. the other main changes include: 1. as the script/checkpatch.pl suggests, use strict_strtol instead of simple_strtol in arch/mips/lemote/lm2e/cmdline.c 2. use the existed macros in asm/mips-boards/bonito64.h as the arguments of set_io_port_base() and remove the un-needed ones in asm/mach-lemote/pci.h Signed-off-by: Wu Zhangjin Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/include/asm/mach-lemote/pci.h b/arch/mips/include/asm/mach-lemote/pci.h index ea6aa14..0307e49 100644 --- a/arch/mips/include/asm/mach-lemote/pci.h +++ b/arch/mips/include/asm/mach-lemote/pci.h @@ -25,6 +25,5 @@ #define LOONGSON2E_PCI_MEM_START 0x14000000UL #define LOONGSON2E_PCI_MEM_END 0x1fffffffUL #define LOONGSON2E_PCI_IO_START 0x00004000UL -#define LOONGSON2E_IO_PORT_BASE 0x1fd00000UL #endif /* !_LEMOTE_PCI_H_ */ diff --git a/arch/mips/lemote/lm2e/Makefile b/arch/mips/lemote/lm2e/Makefile index f191732..a5bc1ef 100644 --- a/arch/mips/lemote/lm2e/Makefile +++ b/arch/mips/lemote/lm2e/Makefile @@ -2,7 +2,8 @@ # Makefile for Lemote Fulong mini-PC board. # -obj-y += setup.o prom.o reset.o irq.o pci.o bonito-irq.o mem.o +obj-y += setup.o init.o reset.o irq.o pci.o bonito-irq.o mem.o \ + env.o cmdline.o time.o machtype.o # # Early printk support diff --git a/arch/mips/lemote/lm2e/prom.c b/arch/mips/lemote/lm2e/cmdline.c similarity index 51% rename from arch/mips/lemote/lm2e/prom.c rename to arch/mips/lemote/lm2e/cmdline.c index d78cedf..442b935 100644 --- a/arch/mips/lemote/lm2e/prom.c +++ b/arch/mips/lemote/lm2e/cmdline.c @@ -9,83 +9,45 @@ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology * Author: Fuxin Zhang, zhangfx@lemote.com * + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * * 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 -extern unsigned long bus_clock; -extern unsigned long cpu_clock_freq; -extern unsigned int memsize, highmemsize; +#include -static int argc; +int prom_argc; /* pmon passes arguments in 32bit pointers */ -static int *arg; -static int *env; - -const char *get_system_type(void) -{ - return "lemote-fulong"; -} +int *_prom_argv; void __init prom_init_cmdline(void) { int i; long l; + /* firmware arguments are initialized in head.S */ + prom_argc = fw_arg0; + _prom_argv = (int *)fw_arg1; + /* arg[0] is "g", the rest is boot parameters */ arcs_cmdline[0] = '\0'; - for (i = 1; i < argc; i++) { - l = (long)arg[i]; + for (i = 1; i < prom_argc; i++) { + l = (long)_prom_argv[i]; if (strlen(arcs_cmdline) + strlen(((char *)l) + 1) >= sizeof(arcs_cmdline)) break; strcat(arcs_cmdline, ((char *)l)); strcat(arcs_cmdline, " "); } -} - -void __init prom_init(void) -{ - long l; - argc = fw_arg0; - arg = (int *)fw_arg1; - env = (int *)fw_arg2; - - prom_init_cmdline(); if ((strstr(arcs_cmdline, "console=")) == NULL) strcat(arcs_cmdline, " console=ttyS0,115200"); if ((strstr(arcs_cmdline, "root=")) == NULL) strcat(arcs_cmdline, " root=/dev/hda1"); - -#define parse_even_earlier(res, option, p) \ -do { \ - if (strncmp(option, (char *)p, strlen(option)) == 0) \ - res = simple_strtol((char *)p + strlen(option"="), \ - NULL, 10); \ -} while (0) - - l = (long)*env; - while (l != 0) { - parse_even_earlier(bus_clock, "busclock", l); - parse_even_earlier(cpu_clock_freq, "cpuclock", l); - parse_even_earlier(memsize, "memsize", l); - parse_even_earlier(highmemsize, "highmemsize", l); - env++; - l = (long)*env; - } - if (memsize == 0) - memsize = 256; - - pr_info("busclock=%ld, cpuclock=%ld,memsize=%d,highmemsize=%d\n", - bus_clock, cpu_clock_freq, memsize, highmemsize); -} - -void __init prom_free_prom_memory(void) -{ } diff --git a/arch/mips/lemote/lm2e/env.c b/arch/mips/lemote/lm2e/env.c new file mode 100644 index 0000000..9e88409 --- /dev/null +++ b/arch/mips/lemote/lm2e/env.c @@ -0,0 +1,60 @@ +/* + * Based on Ocelot Linux port, which is + * Copyright 2001 MontaVista Software Inc. + * Author: jsun@mvista.com or jsun@junsun.net + * + * Copyright 2003 ICT CAS + * Author: Michael Guo + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * 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 + +unsigned long bus_clock, cpu_clock_freq; +unsigned long memsize, highmemsize; + +/* pmon passes arguments in 32bit pointers */ +int *_prom_envp; + +#define parse_even_earlier(res, option, p) \ +do { \ + if (strncmp(option, (char *)p, strlen(option)) == 0) \ + strict_strtol((char *)p + strlen(option"="), \ + 10, &res); \ +} while (0) + +void __init prom_init_env(void) +{ + long l; + + /* firmware arguments are initialized in head.S */ + _prom_envp = (int *)fw_arg2; + + l = (long)*_prom_envp; + while (l != 0) { + parse_even_earlier(bus_clock, "busclock", l); + parse_even_earlier(cpu_clock_freq, "cpuclock", l); + parse_even_earlier(memsize, "memsize", l); + parse_even_earlier(highmemsize, "highmemsize", l); + _prom_envp++; + l = (long)*_prom_envp; + } + if (memsize == 0) + memsize = 256; + + pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n", + bus_clock, cpu_clock_freq, memsize, highmemsize); +} diff --git a/arch/mips/lemote/lm2e/init.c b/arch/mips/lemote/lm2e/init.c new file mode 100644 index 0000000..6fe624d --- /dev/null +++ b/arch/mips/lemote/lm2e/init.c @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * 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 + +extern void __init prom_init_cmdline(void); +extern void __init prom_init_env(void); +extern void __init prom_init_memory(void); + +void __init prom_init(void) +{ + /* init base address of io space */ + set_io_port_base((unsigned long) + ioremap(BONITO_PCIIO_BASE, BONITO_PCIIO_SIZE)); + + prom_init_cmdline(); + prom_init_env(); + prom_init_memory(); +} + +void __init prom_free_prom_memory(void) +{ +} diff --git a/arch/mips/lemote/lm2e/machtype.c b/arch/mips/lemote/lm2e/machtype.c new file mode 100644 index 0000000..8d803ee --- /dev/null +++ b/arch/mips/lemote/lm2e/machtype.c @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * 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. + */ + +const char *get_system_type(void) +{ + return "lemote-fulong"; +} + diff --git a/arch/mips/lemote/lm2e/mem.c b/arch/mips/lemote/lm2e/mem.c index 16cd215..f24af70 100644 --- a/arch/mips/lemote/lm2e/mem.c +++ b/arch/mips/lemote/lm2e/mem.c @@ -8,6 +8,19 @@ #include #include +#include + +extern unsigned long memsize, highmemsize; + +void __init prom_init_memory(void) +{ + add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM); +#ifdef CONFIG_64BIT + if (highmemsize > 0) + add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM); +#endif /* CONFIG_64BIT */ +} + /* override of arch/mips/mm/cache.c: __uncached_access */ int __uncached_access(struct file *file, unsigned long addr) { diff --git a/arch/mips/lemote/lm2e/setup.c b/arch/mips/lemote/lm2e/setup.c index 79dae63..03578cf 100644 --- a/arch/mips/lemote/lm2e/setup.c +++ b/arch/mips/lemote/lm2e/setup.c @@ -26,37 +26,16 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. * */ -#include #include -#include +#include -#include -#include -#include #include -#include #ifdef CONFIG_VT #include #include #endif -unsigned long cpu_clock_freq; -unsigned long bus_clock; -unsigned int memsize; -unsigned int highmemsize = 0; - -void __init plat_time_init(void) -{ - /* setup mips r4k timer */ - mips_hpt_frequency = cpu_clock_freq / 2; -} - -unsigned long read_persistent_clock(void) -{ - return mc146818_get_cmos_time(); -} - void (*__wbflush)(void); EXPORT_SYMBOL(__wbflush); @@ -73,18 +52,8 @@ static void wbflush_loongson2e(void) void __init plat_mem_setup(void) { - set_io_port_base((unsigned long)ioremap(LOONGSON2E_IO_PORT_BASE, - IO_SPACE_LIMIT - LOONGSON2E_PCI_IO_START + 1)); - __wbflush = wbflush_loongson2e; - add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM); -#ifdef CONFIG_64BIT - if (highmemsize > 0) { - add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM); - } -#endif - #ifdef CONFIG_VT #if defined(CONFIG_VGA_CONSOLE) conswitchp = &vga_con; @@ -104,5 +73,4 @@ void __init plat_mem_setup(void) conswitchp = &dummy_con; #endif #endif - } diff --git a/arch/mips/lemote/lm2e/time.c b/arch/mips/lemote/lm2e/time.c new file mode 100644 index 0000000..b9d3f11 --- /dev/null +++ b/arch/mips/lemote/lm2e/time.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * 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 + +extern unsigned long cpu_clock_freq; + +void __init plat_time_init(void) +{ + /* setup mips r4k timer */ + mips_hpt_frequency = cpu_clock_freq / 2; +} + +unsigned long read_persistent_clock(void) +{ + return mc146818_get_cmos_time(); +}