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/*
* linux/arch/mips/kernel/setup.c
*
* Copyright (C) 1995 Linus Torvalds
* Copyright (C) 1995 Ralf Baechle
*/
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/string.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/malloc.h>
#include <linux/ldt.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/tty.h>
#include <asm/asm.h>
#include <asm/bootinfo.h>
#include <asm/vector.h>
#include <asm/segment.h>
#include <asm/stackframe.h>
#include <asm/system.h>
/*
* How to handle the machine's features
*/
struct feature *feature;
#ifdef CONFIG_ACER_PICA_61
void acer_pica_61_handle_int(void);
struct feature acer_pica_61_feature = {
acer_pica_61_handle_int
};
#endif
#ifdef CONFIG_DECSTATION
void decstation_handle_handle_int(void);
struct feature decstation_feature = {
decstation_handle_handle_int
};
#endif
#ifdef CONFIG_DESKSTATION_RPC44
void deskstation_rpc44_handle_int(void);
struct feature deskstation_rpc44_feature = {
deskstation_rpc44_handle_int
};
#endif
#ifdef CONFIG_DESKSTATION_TYNE
void deskstation_tyne_handle_int(void);
struct feature deskstation_tyne_feature = {
deskstation_tyne_handle_int
};
#endif
#ifdef CONFIG_MIPS_MAGNUM_4000
void mips_magnum_4000_handle_int(void);
struct feature mips_magnum_4000_feature = {
mips_magnum_4000_handle_int
};
#endif
/*
* Tell us the machine setup..
*/
char wait_available; /* set if the "wait" instruction available */
/*
* Bus types ..
*/
int EISA_bus = 0;
/*
* Setup options
*/
struct drive_info_struct drive_info;
struct screen_info screen_info = SCREEN_INFO;
unsigned char aux_device_present;
extern int ramdisk_size;
extern int root_mountflags;
extern int _end;
extern char empty_zero_page[PAGE_SIZE];
/*
* Initialise this structure so that it will be placed in the
* .data section of the object file
*/
struct bootinfo boot_info = BOOT_INFO;
/*
* This is set up by the setup-routine at boot-time
*/
#define PARAM empty_zero_page
#if 0
#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
#endif
static char command_line[CL_SIZE] = { 0, };
#if 0
/*
* Code for easy access to new style bootinfo
*
* Parameter: tag -- taglist entry
*
* returns : (tag *) -- pointer to taglist entry, NULL for not found
*/
tag *
bi_TagFind(enum bi_tag tag)
{
/* TBD */
return 0;
}
/*
* Only for taglist creators (bootloaders)
*
* Parameter: tag -- (enum bi_tag) taglist entry
*
* returns : 1 -- success
* 0 -- failure
*/
int
bi_TagAdd(enum bi_tag tag, unsigned long size, void *tagdata)
{
/* TBD */
return 0;
}
#endif /* 0 */
void setup_arch(char **cmdline_p,
unsigned long * memory_start_p, unsigned long * memory_end_p)
{
unsigned long memory_start, memory_end;
switch(boot_info.machtype)
{
#ifdef CONFIG_ACER_PICA_61
case MACH_ACER_PICA_61:
feature = &acer_pica_61_feature;
break;
#endif
#ifdef CONFIG_DECSTATION
case MACH_DECSTATION:
feature = &decstation_feature;
break;
#endif
#ifdef CONFIG_DESKSTATION_RPC
case MACH_DESKSTATION_RPC:
feature = &deskstation_rpc44_feature;
break;
#endif
#ifdef CONFIG_DESKSTATION_TYNE
case MACH_DESKSTATION_TYNE:
feature = &deskstation_tyne_feature;
break;
#endif
#ifdef CONFIG_MIPS_MAGNUM_4000
case MACH_MIPS_MAGNUM_4000:
feature = &mips_magnum_4000_feature;
break;
#endif
default:
panic("Unsupported architecture");
}
#if 0
ROOT_DEV = ORIG_ROOT_DEV;
#else
ROOT_DEV = 0x021c; /* fd0H1440 */
/* ROOT_DEV = 0x0101; */ /* ram */
/* ROOT_DEV = 0x00ff; */ /* NFS */
#endif
memcpy(&drive_info, &boot_info.drive_info, sizeof(drive_info));
#if 0
aux_device_present = AUX_DEVICE_INFO;
#endif
memory_end = boot_info.memupper;
memory_end &= PAGE_MASK;
ramdisk_size = boot_info.ramdisk_size;
if (boot_info.mount_root_rdonly)
root_mountflags |= MS_RDONLY;
memory_start = (unsigned long) &_end;
memory_start += (ramdisk_size << 10);
*cmdline_p = command_line;
*memory_start_p = memory_start;
*memory_end_p = memory_end;
#if 0
/*
* Check that struct pt_regs is defined properly
* (Should be optimized away, but gcc 2.6.3 is too bad..)
*/
if (FR_SIZE != sizeof(struct pt_regs) ||
FR_SIZE & 7)
{
panic("Check_definition_of_struct_pt_regs\n");
}
#endif
}
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