patch-2.1.16 linux/arch/ppc/kernel/setup.c
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- Lines: 565
- Date:
Wed Dec 18 10:49:52 1996
- Orig file:
v2.1.15/linux/arch/ppc/kernel/setup.c
- Orig date:
Mon Jul 8 11:27:43 1996
diff -u --recursive --new-file v2.1.15/linux/arch/ppc/kernel/setup.c linux/arch/ppc/kernel/setup.c
@@ -3,6 +3,7 @@
*
* Copyright (C) 1995 Linus Torvalds
* Adapted from 'alpha' version by Gary Thomas
+ * Modified by Cort Dougan (cort@cs.nmt.edu)
*/
/*
@@ -17,23 +18,22 @@
#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 <linux/major.h>
-#define SIO_CONFIG_RA 0x398
-#define SIO_CONFIG_RD 0x399
-
+#include <asm/mmu.h>
+#include <asm/processor.h>
+#include <asm/residual.h>
+#include <asm/io.h>
#include <asm/pgtable.h>
extern unsigned long *end_of_DRAM;
extern PTE *Hash;
extern unsigned long Hash_size, Hash_mask;
-
-char sda_root[] = "root=/dev/sda1";
-extern int root_mountflags;
+extern int probingmem;
+unsigned long empty_zero_page[1024];
unsigned char aux_device_present;
#ifdef CONFIG_BLK_DEV_RAM
@@ -42,6 +42,14 @@
extern int rd_image_start; /* starting block # of image */
#endif
+#undef HASHSTATS
+
+extern unsigned long isBeBox[];
+
+/* copy of the residual data */
+RESIDUAL res;
+unsigned long resptr = 0; /* ptr to residual data from hw */
+
/*
* The format of "screen_info" is strange, and due to early
* i386-setup code. This is just enough to make the console
@@ -51,196 +59,351 @@
-- Cort
*/
struct screen_info screen_info = {
- 0, 25, /* orig-x, orig-y */
- { 0, 0 }, /* unused */
- 0, /* orig-video-page */
- 0, /* orig-video-mode */
- 80, /* orig-video-cols */
- 0,0,0, /* ega_ax, ega_bx, ega_cx */
- 25, /* orig-video-lines */
- 1, /* orig-video-isVGA */
- 16 /* orig-video-points */
+ 0, 25, /* orig-x, orig-y */
+ { 0, 0 }, /* unused */
+ 0, /* orig-video-page */
+ 0, /* orig-video-mode */
+ 80, /* orig-video-cols */
+ 0,0,0, /* ega_ax, ega_bx, ega_cx */
+ 25, /* orig-video-lines */
+ 1, /* orig-video-isVGA */
+ 16 /* orig-video-points */
};
unsigned long bios32_init(unsigned long memory_start, unsigned long memory_end)
{
- return memory_start;
+ return memory_start;
}
-unsigned long find_end_of_memory(void)
+#ifdef HASHSTATS
+unsigned long *hashhits;
+#endif
+
+extern unsigned long _TotalMemory;
+/* find the physical size of RAM and setup hardware hash table */
+unsigned long *find_end_of_memory(void)
{
- unsigned char dram_size = inb(0x0804);
- unsigned long total;
- extern BAT BAT2;
-printk("DRAM Size = %x\n", dram_size);
-printk("Config registers = %x/%x/%x/%x\n", inb(0x0800), inb(0x0801), inb(0x0802), inb(0x0803));
- switch (dram_size & 0x07)
- {
- case 0:
- total = 0x08000000; /* 128M */
- break;
- case 1:
- total = 0x02000000; /* 32M */
- break;
- case 2:
- total = 0x00800000; /* 8M */
- break;
- case 3:
- total = 0x00400000; /* 4M - can't happen! */
- break;
- case 4:
- total = 0x10000000; /* 256M */
- break;
- case 5:
- total = 0x04000000; /* 64M */
- break;
- case 6:
- total = 0x01000000; /* 16M */
- break;
- case 7:
- total = 0x04000000; /* Can't happen */
- break;
- }
- switch ((dram_size>>4) & 0x07)
- {
- case 0:
- total += 0x08000000; /* 128M */
- break;
- case 1:
- total += 0x02000000; /* 32M */
- break;
- case 2:
- total += 0x00800000; /* 8M */
- break;
- case 3:
- total += 0x00000000; /* Module not present */
- break;
- case 4:
- total += 0x10000000; /* 256M */
- break;
- case 5:
- total += 0x04000000; /* 64M */
- break;
- case 6:
- total += 0x01000000; /* 16M */
- break;
- case 7:
- total += 0x00000000; /* Module not present */
- break;
- }
-/* TEMP */ total = 0x01000000;
-/* _cnpause(); */
-/* CAUTION!! This can be done more elegantly! */
- if (total < 0x01000000)
- {
- Hash_size = HASH_TABLE_SIZE_64K;
- Hash_mask = HASH_TABLE_MASK_64K;
- } else
- {
- Hash_size = HASH_TABLE_SIZE_128K;
- Hash_mask = HASH_TABLE_MASK_128K;
- }
- switch(total)
- {
- case 0x01000000:
-/* BAT2[0][1] = BL_16M;*/
- break;
- default:
- printk("WARNING: setup.c: find_end_of_memory() unknown total ram size %x\n", total);
- break;
- }
-
- Hash = (PTE *)((total-Hash_size)+KERNELBASE);
- bzero(Hash, Hash_size);
- return ((unsigned long)Hash);
+ extern BAT BAT2;
+ _TotalMemory = res.TotalMemory;
+
+ if (_TotalMemory == 0 )
+ {
+ printk("Ramsize from residual data was 0 -- Probing for value\n");
+ /* this needs be done differently since the bats actually map
+ addresses beyond physical memory! -- Cort */
+#if 0
+ probingmem = 1;
+ while ( probingmem )
+ {
+ _TotalMemory += 0x00800000; /* 8M */
+ *(unsigned long *)_TotalMemory+KERNELBASE;
+ }
+ _TotalMemory -= 0x00800000;
+#else
+ _TotalMemory = 0x03000000;
+#endif
+ printk("Ramsize probed to be %dM\n", _TotalMemory>>20);
+ }
+
+ /* setup BAT2 mapping so that it covers kernelbase to kernelbase+ramsize */
+ switch(_TotalMemory)
+ {
+ case 0x01000000: /* 16M */
+ BAT2.batu.bl = BL_16M;
+ Hash_size = HASH_TABLE_SIZE_128K;
+ Hash_mask = HASH_TABLE_MASK_128K;
+ break;
+ case 0x00800000: /* 8M */
+ BAT2.batu.bl = BL_8M;
+ Hash_size = HASH_TABLE_SIZE_64K;
+ Hash_mask = HASH_TABLE_MASK_64K;
+ break;
+ case 0x01800000: /* 24M */
+ case 0x02000000: /* 32M */
+ BAT2.batu.bl = BL_32M;
+ Hash_size = HASH_TABLE_SIZE_256K;
+ Hash_mask = HASH_TABLE_MASK_256K;
+ break;
+ case 0x03000000: /* 48M */
+ case 0x04000000: /* 64M */
+ BAT2.batu.bl = BL_64M;
+ Hash_size = HASH_TABLE_SIZE_512K;
+ Hash_mask = HASH_TABLE_MASK_512K;
+ break;
+ case 0x05000000: /* 80M */
+ BAT2.batu.bl = BL_128M;
+ Hash_size = HASH_TABLE_SIZE_1M;
+ Hash_mask = HASH_TABLE_MASK_1M;
+ break;
+ default:
+ printk("WARNING: setup.c: find_end_of_memory() unknown total ram size %x\n",
+ _TotalMemory);
+ break;
+ }
+
+ Hash = (PTE *)((_TotalMemory-Hash_size)+KERNELBASE);
+ bzero(Hash, Hash_size);
+
+
+#ifdef HASHSTATS
+ hashhits = (unsigned long *)Hash - (Hash_size/sizeof(struct _PTE))/2;
+ bzero(hashhits, (Hash_size/sizeof(struct _PTE))/2);
+ return ((unsigned long *)hashhits);
+#else
+ return ((unsigned long *)Hash);
+#endif
}
int size_memory;
-/* #define DEFAULT_ROOT_DEVICE 0x0200 /* fd0 */
-#define DEFAULT_ROOT_DEVICE 0x0801 /* sda1 */
+/*
+ * This is set up by the setup-routine at boot-time
+ */
+#define EXT_MEM_K (*(unsigned short *) (PARAM+2))
+#ifdef CONFIG_APM
+#define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+64))
+#endif
+#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
+#define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
+#define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
+#define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
+#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
+#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
+#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
+#define KERNEL_START (*(unsigned long *) (PARAM+0x214))
+#define INITRD_START (*(unsigned long *) (PARAM+0x218))
+#define INITRD_SIZE (*(unsigned long *) (PARAM+0x21c))
+#define COMMAND_LINE ((char *) (PARAM+2048))
+#define COMMAND_LINE_SIZE 256
+
+#define RAMDISK_IMAGE_START_MASK 0x07FF
+#define RAMDISK_PROMPT_FLAG 0x8000
+#define RAMDISK_LOAD_FLAG 0x4000
+
+static char command_line[COMMAND_LINE_SIZE] = { 0, };
+ char saved_command_line[COMMAND_LINE_SIZE];
-void setup_arch(char **cmdline_p,
- unsigned long * memory_start_p, unsigned long * memory_end_p)
+
+void
+setup_arch(char **cmdline_p, unsigned long * memory_start_p,
+ unsigned long * memory_end_p)
{
- extern int _end;
- extern char cmd_line[];
- unsigned char reg;
-
- /* Set up floppy in PS/2 mode */
- outb(0x09, SIO_CONFIG_RA);
- reg = inb(SIO_CONFIG_RD);
- reg = (reg & 0x3F) | 0x40;
- outb(reg, SIO_CONFIG_RD);
- outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
- ROOT_DEV = to_kdev_t(DEFAULT_ROOT_DEVICE);
- /*ROOT_DEV = MKDEV(UNNAMED_MAJOR, 255);*/ /* nfs */
- aux_device_present = 0xaa;
+ extern int _end;
+ extern char cmd_line[];
+ unsigned char reg;
+ extern int panic_timeout;
+ char inf[512];
+ int i;
+
+ if (isBeBox[0])
+ _Processor = _PROC_Be;
+ else
+ {
+ if (strncmp(res.VitalProductData.PrintableModel,"IBM",3))
+ {
+ _Processor = _PROC_Motorola;
+ }
+ else
+ _Processor = _PROC_IBM;
+ }
+
+ get_cpuinfo(&inf);
+ printk("%s",inf);
+
+ /* Set up floppy in PS/2 mode */
+ outb(0x09, SIO_CONFIG_RA);
+ reg = inb(SIO_CONFIG_RD);
+ reg = (reg & 0x3F) | 0x40;
+ outb(reg, SIO_CONFIG_RD);
+ outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
+
+ switch ( _Processor )
+ {
+ case _PROC_IBM:
+ ROOT_DEV = to_kdev_t(0x0301); /* hda1 */
+ break;
+ case _PROC_Motorola:
+ ROOT_DEV = to_kdev_t(0x0801); /* sda1 */
+ break;
+ }
+ aux_device_present = 0xaa;
+
+ panic_timeout = 300; /* reboot on panic */
+
+#if 0
+ /* get root via nfs from charon -- was only used for testing */
+ ROOT_DEV = MKDEV(UNNAMED_MAJOR, 255); /* nfs */
/*nfsaddrs=myip:serverip:gateip:netmaskip:clientname*/
strcpy(cmd_line,
- "nfsaddrs=129.138.6.13:129.138.6.90:129.138.6.1:255.255.255.0:pandora");
- /* strcpy(cmd_line,"root=/dev/sda1");*/
- *cmdline_p = cmd_line;
- *memory_start_p = (unsigned long) &_end;
- *memory_end_p = (unsigned long *)end_of_DRAM;
- size_memory = *memory_end_p - KERNELBASE; /* Relative size of memory */
+ "nfsaddrs=129.138.6.101:129.138.6.90:129.138.6.1:255.255.255.0:gordito nfsroot=/joplin/ppc/root/");
+#endif
+ *cmdline_p = cmd_line;
+ *memory_start_p = (unsigned long) &_end;
+ (unsigned long *)*memory_end_p = (unsigned long *)end_of_DRAM;
+ size_memory = *memory_end_p - KERNELBASE; /* Relative size of memory */
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
- rd_prompt = 0;
- rd_doload = 0;
+#if 1
+ rd_prompt = 1;
+ rd_doload = 1;
rd_image_start = 0;
-#endif
+#endif
+#endif
+
+ /* Save unparsed command line copy for /proc/cmdline */
+ memcpy(saved_command_line, cmd_line,strlen(cmd_line)+1);
+ printk("Command line: %s\n", cmd_line);
}
asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on)
{
- return -EIO;
+ return -EIO;
}
-#if 0
-extern char builtin_ramdisk_image;
-extern long builtin_ramdisk_size;
-void
-builtin_ramdisk_init(void)
-{
- if ((ROOT_DEV == to_kdev_t(DEFAULT_ROOT_DEVICE)) && (builtin_ramdisk_size != 0))
- {
- rd_preloaded_init(&builtin_ramdisk_image, builtin_ramdisk_size);
- } else
- { /* Not ramdisk - assume root needs to be mounted read only */
- root_mountflags |= MS_RDONLY;
- }
-}
-#endif
-#define MAJOR(n) (((n)&0xFF00)>>8)
-#define MINOR(n) ((n)&0x00FF)
int
get_cpuinfo(char *buffer)
{
- int pvr = _get_PVR();
- char *model;
- switch (pvr>>16)
- {
- case 3:
- model = "603";
- break;
- case 4:
- model = "604";
- break;
- case 6:
- model = "603e";
- break;
- case 7:
- model = "603ev";
- break;
- default:
- model = "unknown";
- break;
- }
- return sprintf(buffer, "PowerPC %s rev %d.%d\n", model, MAJOR(pvr), MINOR(pvr));
+ extern unsigned long loops_per_sec;
+ int i;
+ int pvr = _get_PVR();
+ int len;
+ char *model;
+ unsigned long full = 0, overflow = 0;
+ unsigned int ti;
+ PTE *ptr;
+
+ switch (pvr>>16)
+ {
+ case 3:
+ model = "603";
+ break;
+ case 4:
+ model = "604";
+ break;
+ case 6:
+ model = "603e";
+ break;
+ case 7:
+ model = "603ev";
+ break;
+ default:
+ model = "unknown";
+ break;
+ }
+
+#ifdef __SMP__
+#define CD(X) (cpu_data[n].X)
+#else
+#define CD(X) (X)
+#define CPUN 0
+#endif
+
+ len = sprintf(buffer, "PowerPC %s/%dMHz revision %d.%d %s\n",
+ model,
+ (res.VitalProductData.ProcessorHz > 1024) ?
+ res.VitalProductData.ProcessorHz>>20 :
+ res.VitalProductData.ProcessorHz,
+ MAJOR(pvr), MINOR(pvr),
+ (inb(IBM_EQUIP_PRESENT) & 2) ? "" : "upgrade");
+#if 1
+ if ( res.VitalProductData.PrintableModel[0] )
+ len += sprintf(buffer+len,"%s\n",res.VitalProductData.PrintableModel);
+
+ len += sprintf(buffer+len,"Bus %dMHz\n",
+ (res.VitalProductData.ProcessorBusHz > 1024) ?
+ res.VitalProductData.ProcessorBusHz>>20 :
+ res.VitalProductData.ProcessorBusHz);
+
+ /* make sure loops_per_sec has been setup -- ie not at boottime -- Cort */
+ if ( CD(loops_per_sec+2500)/500000 > 0)
+ len += sprintf(buffer+len,
+ "bogomips: %lu.%02lu\n",
+ CD(loops_per_sec+2500)/500000,
+ (CD(loops_per_sec+2500)/5000) % 100);
+
+
+ len += sprintf(buffer+len,"Total Ram: %dM Hash Table: %dkB (%dk buckets)\n",
+ _TotalMemory>>20, Hash_size>>10,
+ (Hash_size/(sizeof(PTE)*8)) >> 10);
+
+ for ( i = 0 ; (res.ActualNumMemories) && (i < MAX_MEMS) ; i++ )
+ {
+ if (i == 0)
+ len += sprintf(buffer+len,"SIMM Banks: ");
+ if ( res.Memories[i].SIMMSize != 0 )
+ len += sprintf(buffer+len,"%d:%dM ",i,
+ (res.Memories[i].SIMMSize > 1024) ?
+ res.Memories[i].SIMMSize>>20 :
+ res.Memories[i].SIMMSize);
+ if ( i == MAX_MEMS-1)
+ len += sprintf(buffer+len,"\n");
+ }
+
+ /* TLB */
+ len += sprintf(buffer+len,"TLB");
+ switch(res.VitalProductData.TLBAttrib)
+ {
+ case CombinedTLB:
+ len += sprintf(buffer+len,": %d entries\n",
+ res.VitalProductData.TLBSize);
+ break;
+ case SplitTLB:
+ len += sprintf(buffer+len,": (split I/D) %d/%d entries\n",
+ res.VitalProductData.I_TLBSize,
+ res.VitalProductData.D_TLBSize);
+ break;
+ case NoneTLB:
+ len += sprintf(buffer+len,": not present\n");
+ break;
+ }
+
+ /* L1 */
+ len += sprintf(buffer+len,"L1: ");
+ switch(res.VitalProductData.CacheAttrib)
+ {
+ case CombinedCAC:
+ len += sprintf(buffer+len,"%dkB LineSize\n",
+ res.VitalProductData.CacheSize,
+ res.VitalProductData.CacheLineSize);
+ break;
+ case SplitCAC:
+ len += sprintf(buffer+len,"(split I/D) %dkB/%dkB Linesize %dB/%dB\n",
+ res.VitalProductData.I_CacheSize,
+ res.VitalProductData.D_CacheSize,
+ res.VitalProductData.D_CacheLineSize,
+ res.VitalProductData.D_CacheLineSize);
+ break;
+ case NoneCAC:
+ len += sprintf(buffer+len,"not present\n");
+ break;
+ }
+
+ /* L2 */
+ if ( (inb(IBM_EQUIP_PRESENT) & 1) == 0) /* l2 present */
+ {
+ int size;
+
+ len += sprintf(buffer+len,"L2: %dkB %s\n",
+ ((inb(IBM_L2_STATUS) >> 5) & 1) ? 512 : 256,
+ (inb(IBM_SYS_CTL) & 64) ? "enabled" : "disabled");
+ }
+ else
+ {
+ len += sprintf(buffer+len,"L2: not present\n");
+ }
+#if 0
+ len+= sprintf(buffer+len,"Equip register %x\n",
+ inb(IBM_EQUIP_PRESENT));
+ len+= sprintf(buffer+len,"L2Status register %x\n",
+ inb(IBM_L2_STATUS));
+#endif
+#endif
+
+
+ return len;
}
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