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/*
* BK Id: SCCS/s.setup.c 1.67 12/01/01 20:09:07 benh
*/
/*
* Common prep/pmac/chrp boot and setup code.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/reboot.h>
#include <linux/delay.h>
#include <linux/blk.h>
#include <linux/ide.h>
#include <linux/tty.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <asm/residual.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
#include <asm/bootinfo.h>
#include <asm/setup.h>
#include <asm/amigappc.h>
#include <asm/smp.h>
#include <asm/elf.h>
#include <asm/cputable.h>
#ifdef CONFIG_8xx
#include <asm/mpc8xx.h>
#include <asm/8xx_immap.h>
#endif
#ifdef CONFIG_8260
#include <asm/mpc8260.h>
#include <asm/immap_8260.h>
#endif
#ifdef CONFIG_4xx
#include <asm/ppc4xx.h>
#endif
#include <asm/bootx.h>
#include <asm/btext.h>
#include <asm/machdep.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/pmac_feature.h>
extern void platform_init(unsigned long r3, unsigned long r4,
unsigned long r5, unsigned long r6, unsigned long r7);
extern void bootx_init(unsigned long r4, unsigned long phys);
extern unsigned long reloc_offset(void);
extern void identify_cpu(unsigned long offset, unsigned long cpu);
extern void do_cpu_ftr_fixups(unsigned long offset);
#ifdef CONFIG_XMON
extern void xmon_map_scc(void);
#endif
extern boot_infos_t *boot_infos;
char saved_command_line[256];
unsigned char aux_device_present;
struct ide_machdep_calls ppc_ide_md;
char *sysmap;
unsigned long sysmap_size;
/* Used with the BI_MEMSIZE bootinfo parameter to store the memory
size value reported by the boot loader. */
unsigned int boot_mem_size;
int parse_bootinfo(void);
unsigned long ISA_DMA_THRESHOLD;
unsigned long DMA_MODE_READ, DMA_MODE_WRITE;
#ifdef CONFIG_ALL_PPC
int _machine = 0;
extern void prep_init(unsigned long r3, unsigned long r4,
unsigned long r5, unsigned long r6, unsigned long r7);
extern void pmac_init(unsigned long r3, unsigned long r4,
unsigned long r5, unsigned long r6, unsigned long r7);
extern void chrp_init(unsigned long r3, unsigned long r4,
unsigned long r5, unsigned long r6, unsigned long r7);
#endif /* CONFIG_ALL_PPC */
#ifdef CONFIG_MAGIC_SYSRQ
unsigned long SYSRQ_KEY;
#endif /* CONFIG_MAGIC_SYSRQ */
#ifdef CONFIG_VGA_CONSOLE
unsigned long vgacon_remap_base;
#endif
struct machdep_calls ppc_md;
/*
* These are used in binfmt_elf.c to put aux entries on the stack
* for each elf executable being started.
*/
int dcache_bsize;
int icache_bsize;
int ucache_bsize;
#ifdef CONFIG_VGA_CONSOLE
struct screen_info screen_info = {
0, 25, /* orig-x, orig-y */
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 */
};
#endif /* CONFIG_VGA_CONSOLE */
void machine_restart(char *cmd)
{
ppc_md.restart(cmd);
}
void machine_power_off(void)
{
ppc_md.power_off();
}
void machine_halt(void)
{
ppc_md.halt();
}
#ifdef CONFIG_TAU
extern u32 cpu_temp(unsigned long cpu);
extern u32 cpu_temp_both(unsigned long cpu);
#endif /* CONFIG_TAU */
int show_cpuinfo(struct seq_file *m, void *v)
{
int i = (int) v - 1;
int err = 0;
unsigned int pvr;
unsigned short maj, min;
unsigned long lpj;
if (i >= NR_CPUS) {
/* Show summary information */
#ifdef CONFIG_SMP
unsigned long bogosum = 0;
for (i = 0; i < smp_num_cpus; ++i)
if (cpu_online_map & (1 << i))
bogosum += cpu_data[i].loops_per_jiffy;
seq_printf(m, "total bogomips\t: %lu.%02lu\n",
bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
#endif /* CONFIG_SMP */
if (ppc_md.show_cpuinfo != NULL)
err = ppc_md.show_cpuinfo(m);
return err;
}
#ifdef CONFIG_SMP
if (!(cpu_online_map & (1 << i)))
return 0;
pvr = cpu_data[i].pvr;
lpj = cpu_data[i].loops_per_jiffy;
seq_printf(m, "processor\t: %lu\n", i);
#else
pvr = mfspr(PVR);
lpj = loops_per_jiffy;
#endif
seq_printf(m, "cpu\t\t: ");
if (cur_cpu_spec[i]->pvr_mask)
seq_printf(m, "%s", cur_cpu_spec[i]->cpu_name);
else
seq_printf(m, "unknown (%08x)", pvr);
#ifdef CONFIG_ALTIVEC
if (cur_cpu_spec[i]->cpu_features & CPU_FTR_ALTIVEC)
seq_printf(m, ", altivec supported");
#endif
seq_printf(m, "\n");
#ifdef CONFIG_TAU
if (cur_cpu_spec[i]->cpu_features & CPU_FTR_TAU) {
#ifdef CONFIG_TAU_AVERAGE
/* more straightforward, but potentially misleading */
seq_printf(m, "temperature \t: %u C (uncalibrated)\n",
cpu_temp(i));
#else
/* show the actual temp sensor range */
u32 temp;
temp = cpu_temp_both(i);
seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
temp & 0xff, temp >> 16);
#endif
}
#endif /* CONFIG_TAU */
if (ppc_md.show_percpuinfo != NULL) {
err = ppc_md.show_percpuinfo(m, i);
if (err)
return err;
}
switch (PVR_VER(pvr)) {
case 0x0020: /* 403 family */
maj = PVR_MAJ(pvr) + 1;
min = PVR_MIN(pvr);
break;
case 0x1008: /* 740P/750P ?? */
maj = ((pvr >> 8) & 0xFF) - 1;
min = pvr & 0xFF;
break;
default:
maj = (pvr >> 8) & 0xFF;
min = pvr & 0xFF;
break;
}
seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
maj, min, PVR_VER(pvr), PVR_REV(pvr));
seq_printf(m, "bogomips\t: %lu.%02lu\n",
lpj / (500000/HZ), (lpj / (5000/HZ)) % 100);
#ifdef CONFIG_SMP
seq_printf(m, "\n");
#endif
return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
{
int i = *pos;
return i <= NR_CPUS? (void *) (i + 1): NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
++*pos;
return c_start(m, pos);
}
static void c_stop(struct seq_file *m, void *v)
{
}
struct seq_operations cpuinfo_op = {
start: c_start,
next: c_next,
stop: c_stop,
show: show_cpuinfo,
};
/*
* We're called here very early in the boot. We determine the machine
* type and call the appropriate low-level setup functions.
* -- Cort <cort@fsmlabs.com>
*
* Note that the kernel may be running at an address which is different
* from the address that it was linked at, so we must use RELOC/PTRRELOC
* to access static data (including strings). -- paulus
*/
__init
unsigned long
early_init(int r3, int r4, int r5)
{
extern char __bss_start, _end;
unsigned long phys;
unsigned long offset = reloc_offset();
/* Default */
phys = offset + KERNELBASE;
/* First zero the BSS -- use memset, some arches don't have
* caches on yet */
memset_io(PTRRELOC(&__bss_start), 0, &_end - &__bss_start);
/*
* Identify the CPU type and fix up code sections
* that depend on which cpu we have.
*/
identify_cpu(offset, 0);
do_cpu_ftr_fixups(offset);
#if defined(CONFIG_ALL_PPC)
/* If we came here from BootX, clear the screen,
* set up some pointers and return. */
if ((r3 == 0x426f6f58) && (r5 == 0)) {
bootx_init(r4, phys);
return phys;
}
/* check if we're prep, return if we are */
if ( *(unsigned long *)(0) == 0xdeadc0de )
return phys;
/*
* for now, don't use bootinfo because it breaks yaboot 0.5
* and assume that if we didn't find a magic number, we have OF
*/
phys = prom_init(r3, r4, (prom_entry)r5);
#endif
return phys;
}
#ifdef CONFIG_ALL_PPC
void __init
intuit_machine_type(void)
{
char *model;
struct device_node *root;
/* ask the OF info if we're a chrp or pmac */
root = find_path_device("/");
if (root != 0) {
/* assume pmac unless proven to be chrp -- Cort */
_machine = _MACH_Pmac;
model = get_property(root, "device_type", NULL);
if (model && !strncmp("chrp", model, 4))
_machine = _MACH_chrp;
else {
model = get_property(root, "model", NULL);
if (model && !strncmp(model, "IBM", 3))
_machine = _MACH_chrp;
}
}
}
/*
* The ALL_PPC version of platform_init...
*/
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
#ifdef CONFIG_BOOTX_TEXT
extern boot_infos_t *disp_bi;
if (disp_bi) {
btext_clearscreen();
btext_welcome(disp_bi);
}
#endif
/* if we didn't get any bootinfo telling us what we are... */
if (_machine == 0) {
/* prep boot loader tells us if we're prep or not */
if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) )
_machine = _MACH_prep;
}
/* not much more to do here, if prep */
if (_machine == _MACH_prep) {
prep_init(r3, r4, r5, r6, r7);
return;
}
/* prom_init has already been called from __start */
if (boot_infos)
relocate_nodes();
/* If we aren't PReP, we can find out if we're Pmac
* or CHRP with this. */
if (_machine == 0)
intuit_machine_type();
/* finish_device_tree may need _machine defined. */
finish_device_tree();
/*
* If we were booted via quik, r3 points to the physical
* address of the command-line parameters.
* If we were booted from an xcoff image (i.e. netbooted or
* booted from floppy), we get the command line from the
* bootargs property of the /chosen node.
* If an initial ramdisk is present, r3 and r4
* are used for initrd_start and initrd_size,
* otherwise they contain 0xdeadbeef.
*/
if (r3 >= 0x4000 && r3 < 0x800000 && r4 == 0) {
cmd_line[0] = 0;
strncpy(cmd_line, (char *)r3 + KERNELBASE,
sizeof(cmd_line));
} else if (boot_infos != 0) {
/* booted by BootX - check for ramdisk */
if (boot_infos->kernelParamsOffset != 0)
strncpy(cmd_line, (char *) boot_infos
+ boot_infos->kernelParamsOffset,
sizeof(cmd_line));
#ifdef CONFIG_BLK_DEV_INITRD
if (boot_infos->ramDisk) {
initrd_start = (unsigned long) boot_infos
+ boot_infos->ramDisk;
initrd_end = initrd_start + boot_infos->ramDiskSize;
initrd_below_start_ok = 1;
}
#endif
} else {
struct device_node *chosen;
char *p;
#ifdef CONFIG_BLK_DEV_INITRD
if (r3 && r4 && r4 != 0xdeadbeef)
{
if (r3 < KERNELBASE)
r3 += KERNELBASE;
initrd_start = r3;
initrd_end = r3 + r4;
ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
initrd_below_start_ok = 1;
}
#endif
chosen = find_devices("chosen");
if (chosen != NULL) {
p = get_property(chosen, "bootargs", NULL);
if (p && *p) {
cmd_line[0] = 0;
strncpy(cmd_line, p, sizeof(cmd_line));
}
}
}
cmd_line[sizeof(cmd_line) - 1] = 0;
switch (_machine) {
case _MACH_Pmac:
pmac_init(r3, r4, r5, r6, r7);
break;
case _MACH_chrp:
chrp_init(r3, r4, r5, r6, r7);
break;
}
}
#endif /* CONFIG_ALL_PPC */
int parse_bootinfo(void)
{
struct bi_record *rec;
extern char __bss_start[];
rec = (struct bi_record *)_ALIGN((ulong)__bss_start+(1<<20)-1,(1<<20));
if ( rec->tag != BI_FIRST ) {
/*
* This 0x10000 offset is a terrible hack but it will go away when
* we have the bootloader handle all the relocation and
* prom calls -- Cort
*/
rec = (struct bi_record *)_ALIGN((ulong)__bss_start+0x10000+(1<<20)-1,(1<<20));
if ( rec->tag != BI_FIRST )
return -1;
}
for ( ; rec->tag != BI_LAST ;
rec = (struct bi_record *)((ulong)rec + rec->size) )
{
ulong *data = rec->data;
switch (rec->tag) {
case BI_CMD_LINE:
memcpy(cmd_line, (void *)data, rec->size);
break;
case BI_SYSMAP:
sysmap = (char *)((data[0] >= (KERNELBASE)) ? data[0] :
(data[0]+KERNELBASE));
sysmap_size = data[1];
break;
#ifdef CONFIG_BLK_DEV_INITRD
case BI_INITRD:
initrd_start = data[0] + KERNELBASE;
initrd_end = data[0] + data[1] + KERNELBASE;
break;
#endif /* CONFIG_BLK_DEV_INITRD */
#ifdef CONFIG_ALL_PPC
case BI_MACHTYPE:
_machine = data[0];
break;
#endif /* CONFIG_ALL_PPC */
case BI_MEMSIZE:
boot_mem_size = data[0];
break;
}
}
return 0;
}
/*
* Find out what kind of machine we're on and save any data we need
* from the early boot process (devtree is copied on pmac by prom_init()).
* This is called very early on the boot process, after a minimal
* MMU environment has been set up but before MMU_init is called.
*/
void __init
machine_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
#ifdef CONFIG_CMDLINE
strcpy(cmd_line, CONFIG_CMDLINE);
#endif /* CONFIG_CMDLINE */
parse_bootinfo();
platform_init(r3, r4, r5, r6, r7);
if (ppc_md.progress)
ppc_md.progress("id mach(): done", 0x200);
}
/* Checks "l2cr=xxxx" command-line option */
int __init ppc_setup_l2cr(char *str)
{
if (cur_cpu_spec[0]->cpu_features & CPU_FTR_L2CR) {
unsigned long val = simple_strtoul(str, NULL, 0);
printk(KERN_INFO "l2cr set to %lx\n", val);
_set_L2CR(0); /* force invalidate by disable cache */
_set_L2CR(val); /* and enable it */
}
return 1;
}
__setup("l2cr=", ppc_setup_l2cr);
void __init ppc_init(void)
{
/* clear the progress line */
if ( ppc_md.progress ) ppc_md.progress(" ", 0xffff);
if (ppc_md.init != NULL) {
ppc_md.init();
}
}
/* Warning, IO base is not yet inited */
void __init setup_arch(char **cmdline_p)
{
extern int panic_timeout;
extern char _etext[], _edata[];
extern char *klimit;
extern void do_init_bootmem(void);
/* so udelay does something sensible, assume <= 1000 bogomips */
loops_per_jiffy = 500000000 / HZ;
#ifdef CONFIG_ALL_PPC
/* This could be called "early setup arch", it must be done
* now because xmon need it
*/
if (_machine == _MACH_Pmac)
pmac_feature_init(); /* New cool way */
#endif /* CONFIG_ALL_PPC */
#ifdef CONFIG_XMON
xmon_map_scc();
if (strstr(cmd_line, "xmon"))
xmon(0);
#endif /* CONFIG_XMON */
if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
#if defined(CONFIG_KGDB)
kgdb_map_scc();
set_debug_traps();
breakpoint();
#endif
/*
* Set cache line size based on type of cpu as a default.
* Systems with OF can look in the properties on the cpu node(s)
* for a possibly more accurate value.
*/
if (cur_cpu_spec[0]->cpu_features & CPU_FTR_SPLIT_ID_CACHE) {
dcache_bsize = cur_cpu_spec[0]->dcache_bsize;
icache_bsize = cur_cpu_spec[0]->icache_bsize;
ucache_bsize = 0;
} else
ucache_bsize = dcache_bsize = icache_bsize
= cur_cpu_spec[0]->dcache_bsize;
/* reboot on panic */
panic_timeout = 180;
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = (unsigned long) klimit;
/* Save unparsed command line copy for /proc/cmdline */
strcpy(saved_command_line, cmd_line);
*cmdline_p = cmd_line;
/* set up the bootmem stuff with available memory */
do_init_bootmem();
if ( ppc_md.progress ) ppc_md.progress("setup_arch: bootmem", 0x3eab);
ppc_md.setup_arch();
if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
#if defined(CONFIG_PCI) && defined(CONFIG_ALL_PPC)
/* We create the "pci-OF-bus-map" property now so it appear in the
* /proc device tree
*/
if (have_of) {
struct property* of_prop;
of_prop = (struct property*)alloc_bootmem(sizeof(struct property) + 256);
if (of_prop && find_path_device("/")) {
memset(of_prop, -1, sizeof(struct property) + 256);
of_prop->name = "pci-OF-bus-map";
of_prop->length = 256;
of_prop->value = (unsigned char *)&of_prop[1];
prom_add_property(find_path_device("/"), of_prop);
}
}
#endif /* CONFIG_PCI && CONFIG_ALL_PPC */
paging_init();
sort_exception_table();
/* this is for modules since _machine can be a define -- Cort */
ppc_md.ppc_machine = _machine;
}
/* Convert the shorts/longs in hd_driveid from little to big endian;
* chars are endian independant, of course, but strings need to be flipped.
* (Despite what it says in drivers/block/ide.h, they come up as little
* endian...)
*
* Changes to linux/hdreg.h may require changes here. */
void ppc_generic_ide_fix_driveid(struct hd_driveid *id)
{
int i;
unsigned short *stringcast;
id->config = __le16_to_cpu(id->config);
id->cyls = __le16_to_cpu(id->cyls);
id->reserved2 = __le16_to_cpu(id->reserved2);
id->heads = __le16_to_cpu(id->heads);
id->track_bytes = __le16_to_cpu(id->track_bytes);
id->sector_bytes = __le16_to_cpu(id->sector_bytes);
id->sectors = __le16_to_cpu(id->sectors);
id->vendor0 = __le16_to_cpu(id->vendor0);
id->vendor1 = __le16_to_cpu(id->vendor1);
id->vendor2 = __le16_to_cpu(id->vendor2);
stringcast = (unsigned short *)&id->serial_no[0];
for (i = 0; i < (20/2); i++)
stringcast[i] = __le16_to_cpu(stringcast[i]);
id->buf_type = __le16_to_cpu(id->buf_type);
id->buf_size = __le16_to_cpu(id->buf_size);
id->ecc_bytes = __le16_to_cpu(id->ecc_bytes);
stringcast = (unsigned short *)&id->fw_rev[0];
for (i = 0; i < (8/2); i++)
stringcast[i] = __le16_to_cpu(stringcast[i]);
stringcast = (unsigned short *)&id->model[0];
for (i = 0; i < (40/2); i++)
stringcast[i] = __le16_to_cpu(stringcast[i]);
id->dword_io = __le16_to_cpu(id->dword_io);
id->reserved50 = __le16_to_cpu(id->reserved50);
id->field_valid = __le16_to_cpu(id->field_valid);
id->cur_cyls = __le16_to_cpu(id->cur_cyls);
id->cur_heads = __le16_to_cpu(id->cur_heads);
id->cur_sectors = __le16_to_cpu(id->cur_sectors);
id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0);
id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1);
id->lba_capacity = __le32_to_cpu(id->lba_capacity);
id->dma_1word = __le16_to_cpu(id->dma_1word);
id->dma_mword = __le16_to_cpu(id->dma_mword);
id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes);
id->eide_dma_min = __le16_to_cpu(id->eide_dma_min);
id->eide_dma_time = __le16_to_cpu(id->eide_dma_time);
id->eide_pio = __le16_to_cpu(id->eide_pio);
id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy);
for (i = 0; i < 2; i++)
id->words69_70[i] = __le16_to_cpu(id->words69_70[i]);
for (i = 0; i < 4; i++)
id->words71_74[i] = __le16_to_cpu(id->words71_74[i]);
id->queue_depth = __le16_to_cpu(id->queue_depth);
for (i = 0; i < 4; i++)
id->words76_79[i] = __le16_to_cpu(id->words76_79[i]);
id->major_rev_num = __le16_to_cpu(id->major_rev_num);
id->minor_rev_num = __le16_to_cpu(id->minor_rev_num);
id->command_set_1 = __le16_to_cpu(id->command_set_1);
id->command_set_2 = __le16_to_cpu(id->command_set_2);
id->cfsse = __le16_to_cpu(id->cfsse);
id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1);
id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2);
id->csf_default = __le16_to_cpu(id->csf_default);
id->dma_ultra = __le16_to_cpu(id->dma_ultra);
id->word89 = __le16_to_cpu(id->word89);
id->word90 = __le16_to_cpu(id->word90);
id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues);
id->word92 = __le16_to_cpu(id->word92);
id->hw_config = __le16_to_cpu(id->hw_config);
for (i = 0; i < 32; i++)
id->words94_125[i] = __le16_to_cpu(id->words94_125[i]);
id->last_lun = __le16_to_cpu(id->last_lun);
id->word127 = __le16_to_cpu(id->word127);
id->dlf = __le16_to_cpu(id->dlf);
id->csfo = __le16_to_cpu(id->csfo);
for (i = 0; i < 26; i++)
id->words130_155[i] = __le16_to_cpu(id->words130_155[i]);
id->word156 = __le16_to_cpu(id->word156);
for (i = 0; i < 3; i++)
id->words157_159[i] = __le16_to_cpu(id->words157_159[i]);
for (i = 0; i < 96; i++)
id->words160_255[i] = __le16_to_cpu(id->words160_255[i]);
}
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