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/*
* linux/arch/alpha/kernel/setup.c
*
* Copyright (C) 1995 Linus Torvalds
*/
/*
* bootup setup stuff..
*/
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/malloc.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/config.h> /* CONFIG_ALPHA_LCA etc */
#ifdef CONFIG_RTC
#include <linux/ioport.h>
#include <linux/timex.h>
#endif
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/hwrpb.h>
#include <asm/dma.h>
#include <asm/io.h>
struct hae hae = {
0,
(unsigned long*) HAE_ADDRESS
};
struct hwrpb_struct *hwrpb;
unsigned char aux_device_present = 0xaa;
/*
* This is setup by the secondary bootstrap loader. Because
* the zero page is zeroed out as soon as the vm system is
* initialized, we need to copy things out into a more permanent
* place.
*/
#define PARAM ZERO_PAGE
#define COMMAND_LINE ((char*)(PARAM + 0x0000))
#define COMMAND_LINE_SIZE 256
static char command_line[COMMAND_LINE_SIZE] = { 0, };
char saved_command_line[COMMAND_LINE_SIZE];
/*
* The format of "screen_info" is strange, and due to early
* i386-setup code. This is just enough to make the console
* code think we're on a VGA color display.
*/
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 */
};
/*
* Initialize Programmable Interval Timers with standard values. Some
* drivers depend on them being initialized (e.g., joystick driver).
*/
static void init_pit (void)
{
#if 0
/*
* Leave refresh timer alone---nobody should depend on
* a particular value anyway.
*/
outb(0x54, 0x43); /* counter 1: refresh timer */
outb(0x18, 0x41);
#endif
#ifdef CONFIG_RTC /* setup interval timer if /dev/rtc is being used */
outb(0x34, 0x43); /* binary, mode 2, LSB/MSB, ch 0 */
outb(LATCH & 0xff, 0x40); /* LSB */
outb(LATCH >> 8, 0x40); /* MSB */
request_region(0x40, 0x20, "timer"); /* reserve pit */
#else
outb(0x36, 0x43); /* counter 0: system timer */
outb(0x00, 0x40);
outb(0x00, 0x40);
request_region(0x70, 0x10, "timer"); /* reserve rtc */
#endif
outb(0xb6, 0x43); /* counter 2: speaker */
outb(0x31, 0x42);
outb(0x13, 0x42);
}
static unsigned long find_end_memory(void)
{
int i;
unsigned long high = 0;
struct memclust_struct * cluster;
struct memdesc_struct * memdesc;
memdesc = (struct memdesc_struct *)
(INIT_HWRPB->mddt_offset + (unsigned long) INIT_HWRPB);
cluster = memdesc->cluster;
for (i = memdesc->numclusters ; i > 0; i--, cluster++) {
unsigned long tmp;
tmp = (cluster->start_pfn + cluster->numpages) << PAGE_SHIFT;
if (tmp > high)
high = tmp;
}
/* round it up to an even number of pages.. */
high = (high + PAGE_SIZE) & (PAGE_MASK*2);
return PAGE_OFFSET + high;
}
void setup_arch(char **cmdline_p,
unsigned long * memory_start_p, unsigned long * memory_end_p)
{
extern int _end;
init_pit();
hwrpb = (struct hwrpb_struct*)(IDENT_ADDR + INIT_HWRPB->phys_addr);
set_hae(hae.cache); /* sync HAE register w/hae_cache */
wrmces(0x7); /* reset enable correctable error reports */
ROOT_DEV = to_kdev_t(0x0802); /* sda2 */
command_line[COMMAND_LINE_SIZE - 1] = '\0';
/* Hack for Jensen... since we're restricted to 8 or 16
* chars for boot flags depending on the boot mode,
* we need some shorthand. This should do for
* installation. Later we'll add other abbreviations
* as well...
*/
if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
strcpy(command_line, "root=/dev/fd0 load_ramdisk=1");
strcpy(saved_command_line, command_line);
} else {
strcpy(command_line, COMMAND_LINE);
strcpy(saved_command_line, COMMAND_LINE);
}
printk("Command line: %s\n", command_line);
*cmdline_p = command_line;
*memory_start_p = (unsigned long) &_end;
*memory_end_p = find_end_memory();
#if defined(CONFIG_ALPHA_LCA)
*memory_start_p = lca_init(*memory_start_p, *memory_end_p);
#elif defined(CONFIG_ALPHA_APECS)
*memory_start_p = apecs_init(*memory_start_p, *memory_end_p);
#elif defined(CONFIG_ALPHA_CIA)
*memory_start_p = cia_init(*memory_start_p, *memory_end_p);
#endif
}
/*
* BUFFER is PAGE_SIZE bytes long.
*/
int get_cpuinfo(char *buffer)
{
const char *cpu_name[] = {
"EV3", "EV4", "Unknown 1", "LCA4", "EV5", "EV45"
};
# define SYSTYPE_NAME_BIAS 20
const char *systype_name[] = {
"Cabriolet", "EB66P", "-18", "-17", "-16", "-15",
"-14", "-13", "-12", "-11", "-10", "-9", "-8",
"-7", "-6", "-5", "-4", "-3", "-2", "-1", "0",
"ADU", "Cobra", "Ruby", "Flamingo", "5", "Jensen",
"Pelican", "8", "Sable", "AXPvme", "Noname",
"Turbolaser", "Avanti", "Mustang", "Alcor", "16",
"Mikasa", "18", "EB66", "EB64+", "21", "22", "23",
"24", "25", "EB164"
};
struct percpu_struct *cpu;
unsigned int cpu_index;
long sysname_index;
extern struct unaligned_stat {
unsigned long count, va, pc;
} unaligned[2];
# define N(a) (sizeof(a)/sizeof(a[0]))
cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
cpu_index = (unsigned) (cpu->type - 1);
sysname_index = hwrpb->sys_type + SYSTYPE_NAME_BIAS;
return sprintf(buffer,
"cpu\t\t\t: Alpha\n"
"cpu model\t\t: %s\n"
"cpu variation\t\t: %ld\n"
"cpu revision\t\t: %ld\n"
"cpu serial number\t: %s\n"
"system type\t\t: %s\n"
"system variation\t: %ld\n"
"system revision\t\t: %ld\n"
"system serial number\t: %s\n"
"cycle frequency [Hz]\t: %lu\n"
"timer frequency [Hz]\t: %lu.%02lu\n"
"page size [bytes]\t: %ld\n"
"phys. address bits\t: %ld\n"
"max. addr. space #\t: %ld\n"
"BogoMIPS\t\t: %lu.%02lu\n"
"kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
"user unaligned acc\t: %ld (pc=%lx,va=%lx)\n",
(cpu_index < N(cpu_name)
? cpu_name[cpu_index] : "Unknown"),
cpu->variation, cpu->revision, (char*)cpu->serial_no,
(sysname_index < N(systype_name)
? systype_name[sysname_index] : "Unknown"),
hwrpb->sys_variation, hwrpb->sys_revision,
(char*)hwrpb->ssn,
hwrpb->cycle_freq,
hwrpb->intr_freq / 4096,
(100 * hwrpb->intr_freq / 4096) % 100,
hwrpb->pagesize,
hwrpb->pa_bits,
hwrpb->max_asn,
loops_per_sec / 500000, (loops_per_sec / 5000) % 100,
unaligned[0].count, unaligned[0].pc, unaligned[0].va,
unaligned[1].count, unaligned[1].pc, unaligned[1].va);
# undef N
}
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