/*
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/*
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* linux/arch/arm/kernel/setup-sa.c
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* linux/arch/arm/kernel/setup-sa.c
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*
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*
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* Copyright (C) 1995, 1996 Russell King
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* Copyright (C) 1995, 1996 Russell King
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*/
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*/
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/*
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/*
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* This file obtains various parameters about the system that the kernel
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* This file obtains various parameters about the system that the kernel
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* is running on.
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* is running on.
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*/
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*/
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#include <linux/config.h>
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#include <linux/config.h>
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#include <linux/errno.h>
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/ptrace.h>
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#include <linux/malloc.h>
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#include <linux/malloc.h>
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#include <linux/ldt.h>
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#include <linux/ldt.h>
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#include <linux/user.h>
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#include <linux/user.h>
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#include <linux/a.out.h>
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#include <linux/a.out.h>
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#include <linux/tty.h>
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#include <linux/tty.h>
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#include <linux/ioport.h>
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include <linux/delay.h>
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#include <linux/major.h>
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#include <linux/major.h>
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#include <linux/utsname.h>
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#include <linux/utsname.h>
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#include <asm/segment.h>
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#include <asm/segment.h>
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#include <asm/system.h>
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#include <asm/system.h>
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#include <asm/hardware.h>
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#include <asm/hardware.h>
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#include <asm/pgtable.h>
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#include <asm/pgtable.h>
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#define COMMAND_LINE_SIZE 256
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#define COMMAND_LINE_SIZE 256
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unsigned long arm_id;
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unsigned long arm_id;
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extern int root_mountflags;
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extern int root_mountflags;
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extern int _etext, _edata, _end;
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extern int _etext, _edata, _end;
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#ifdef CONFIG_BLK_DEV_RAM
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#ifdef CONFIG_BLK_DEV_RAM
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extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
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extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
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extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
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extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
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extern int rd_image_start; /* starting block # of image */
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extern int rd_image_start; /* starting block # of image */
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static inline void setup_ramdisk (void)
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static inline void setup_ramdisk (void)
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{
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{
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rd_image_start = 0;
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rd_image_start = 0;
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rd_prompt = 1;
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rd_prompt = 1;
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rd_doload = 1;
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rd_doload = 1;
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}
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}
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#else
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#else
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#define setup_ramdisk()
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#define setup_ramdisk()
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#endif
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#endif
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#ifndef CONFIG_CMDLINE
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#ifndef CONFIG_CMDLINE
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#define CONFIG_CMDLINE "root=nfs rw"
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#define CONFIG_CMDLINE "root=nfs rw"
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#endif
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#endif
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static char default_command_line[] = CONFIG_CMDLINE;
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static char default_command_line[] = CONFIG_CMDLINE;
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static char command_line[COMMAND_LINE_SIZE] = { 0, };
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static char command_line[COMMAND_LINE_SIZE] = { 0, };
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char saved_command_line[COMMAND_LINE_SIZE];
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char saved_command_line[COMMAND_LINE_SIZE];
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struct processor processor;
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struct processor processor;
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extern const struct processor sa110_processor_functions;
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extern const struct processor sa110_processor_functions;
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void setup_arch(char **cmdline_p,
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void setup_arch(char **cmdline_p,
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unsigned long * memory_start_p, unsigned long * memory_end_p)
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unsigned long * memory_start_p, unsigned long * memory_end_p)
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{
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{
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unsigned long memory_start, memory_end;
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unsigned long memory_start, memory_end;
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char c = ' ', *to = command_line, *from;
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char c = ' ', *to = command_line, *from;
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int len = 0;
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int len = 0;
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memory_start = (unsigned long)&_end;
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memory_start = (unsigned long)&_end;
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memory_end = 0xc1000000;
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memory_end = 0xc1000000;
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from = default_command_line;
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from = default_command_line;
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processor = sa110_processor_functions;
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processor = sa110_processor_functions;
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processor._proc_init ();
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processor._proc_init ();
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ROOT_DEV = 0x00ff;
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ROOT_DEV = 0x00ff;
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setup_ramdisk();
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setup_ramdisk();
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init_task.mm->start_code = TASK_SIZE;
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init_task.mm->start_code = TASK_SIZE;
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init_task.mm->end_code = TASK_SIZE + (unsigned long) &_etext;
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init_task.mm->end_code = TASK_SIZE + (unsigned long) &_etext;
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init_task.mm->end_data = TASK_SIZE + (unsigned long) &_edata;
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init_task.mm->end_data = TASK_SIZE + (unsigned long) &_edata;
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init_task.mm->brk = TASK_SIZE + (unsigned long) &_end;
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init_task.mm->brk = TASK_SIZE + (unsigned long) &_end;
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/* Save unparsed command line copy for /proc/cmdline */
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/* Save unparsed command line copy for /proc/cmdline */
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memcpy(saved_command_line, from, COMMAND_LINE_SIZE);
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memcpy(saved_command_line, from, COMMAND_LINE_SIZE);
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saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
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saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
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for (;;) {
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for (;;) {
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if (c == ' ' &&
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if (c == ' ' &&
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from[0] == 'm' &&
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from[0] == 'm' &&
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from[1] == 'e' &&
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from[1] == 'e' &&
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from[2] == 'm' &&
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from[2] == 'm' &&
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from[3] == '=') {
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from[3] == '=') {
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memory_end = simple_strtoul(from+4, &from, 0);
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memory_end = simple_strtoul(from+4, &from, 0);
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if ( *from == 'K' || *from == 'k' ) {
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if ( *from == 'K' || *from == 'k' ) {
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memory_end = memory_end << 10;
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memory_end = memory_end << 10;
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from++;
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from++;
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} else if ( *from == 'M' || *from == 'm' ) {
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} else if ( *from == 'M' || *from == 'm' ) {
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memory_end = memory_end << 20;
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memory_end = memory_end << 20;
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from++;
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from++;
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}
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}
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memory_end = memory_end + PAGE_OFFSET;
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memory_end = memory_end + PAGE_OFFSET;
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}
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}
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c = *from++;
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c = *from++;
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if (!c)
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if (!c)
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break;
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break;
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if (COMMAND_LINE_SIZE <= ++len)
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if (COMMAND_LINE_SIZE <= ++len)
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break;
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break;
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*to++ = c;
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*to++ = c;
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}
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}
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*to = '\0';
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*to = '\0';
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*cmdline_p = command_line;
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*cmdline_p = command_line;
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*memory_start_p = memory_start;
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*memory_start_p = memory_start;
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*memory_end_p = memory_end;
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*memory_end_p = memory_end;
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strcpy (system_utsname.machine, "sa110");
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strcpy (system_utsname.machine, "sa110");
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}
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}
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int get_cpuinfo(char * buffer)
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int get_cpuinfo(char * buffer)
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{
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{
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int len;
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int len;
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len = sprintf (buffer, "CPU:\n"
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len = sprintf (buffer, "CPU:\n"
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"Type\t\t: %s\n"
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"Type\t\t: %s\n"
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"Revision\t: %d\n"
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"Revision\t: %d\n"
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"Manufacturer\t: %s\n"
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"Manufacturer\t: %s\n"
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"32bit modes\t: %s\n"
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"32bit modes\t: %s\n"
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"BogoMips\t: %lu.%02lu\n",
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"BogoMips\t: %lu.%02lu\n",
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"sa110",
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"sa110",
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(int)arm_id & 15,
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(int)arm_id & 15,
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"DEC",
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"DEC",
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"yes",
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"yes",
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(loops_per_sec+2500) / 500000,
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(loops_per_sec+2500) / 500000,
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((loops_per_sec+2500) / 5000) % 100);
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((loops_per_sec+2500) / 5000) % 100);
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return len;
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return len;
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}
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}
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