| 1 |
1622 |
jcastillo |
/*
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* linux/arch/alpha/kernel/setup.c
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*
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* Copyright (C) 1995 Linus Torvalds
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*/
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| 7 |
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/*
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| 8 |
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* bootup setup stuff..
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*/
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/malloc.h>
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#include <linux/ldt.h>
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#include <linux/user.h>
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#include <linux/a.out.h>
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#include <linux/tty.h>
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#include <linux/delay.h>
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#include <linux/config.h> /* CONFIG_ALPHA_LCA etc */
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#include <linux/mc146818rtc.h>
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#include <asm/segment.h>
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#include <asm/pgtable.h>
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#include <asm/system.h>
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#include <asm/hwrpb.h>
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#include <asm/dma.h>
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#include <asm/io.h>
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struct hae hae = {
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0,
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(unsigned long*) HAE_ADDRESS
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};
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struct hwrpb_struct *hwrpb;
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unsigned char aux_device_present = 0xaa;
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/*
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* This is setup by the secondary bootstrap loader. Because
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* the zero page is zeroed out as soon as the vm system is
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* initialized, we need to copy things out into a more permanent
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* place.
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*/
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#define PARAM ZERO_PAGE
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#define COMMAND_LINE ((char*)(PARAM + 0x0000))
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#define COMMAND_LINE_SIZE 256
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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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/*
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* The format of "screen_info" is strange, and due to early
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* i386-setup code. This is just enough to make the console
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* code think we're on a VGA color display.
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*/
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struct screen_info screen_info = {
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#if defined(CONFIG_ALPHA_BOOK1)
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/* the AlphaBook1 has LCD video fixed at 800x600, 37 rows and 100 cols */
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0, 37, /* orig-x, orig-y */
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#else
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0, 25, /* orig-x, orig-y */
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#endif
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{ 0, 0 }, /* unused */
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0, /* orig-video-page */
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0, /* orig-video-mode */
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#if defined(CONFIG_ALPHA_BOOK1)
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100, /* orig-video-cols */
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#else
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80, /* orig-video-cols */
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#endif
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0,0,0, /* ega_ax, ega_bx, ega_cx */
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#if defined(CONFIG_ALPHA_BOOK1)
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37, /* orig-video-lines */
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#else
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25, /* orig-video-lines */
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#endif
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1, /* orig-video-isVGA */
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16 /* orig-video-points */
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};
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/*
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* Initialize Programmable Interval Timers with standard values. Some
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* drivers depend on them being initialized (e.g., joystick driver).
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*/
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static void init_pit (void)
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{
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#if 0
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/*
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* Leave refresh timer alone---nobody should depend on
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* a particular value anyway.
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*/
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outb(0x54, 0x43); /* counter 1: refresh timer */
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outb(0x18, 0x41);
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#endif
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#if !defined(CONFIG_ALPHA_RUFFIAN)
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/* Ruffian depends on the system timer established in MILO!! */
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outb(0x36, 0x43); /* counter 0: system timer */
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outb(0x00, 0x40);
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outb(0x00, 0x40);
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#endif /* RUFFIAN */
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outb(0xb6, 0x43); /* counter 2: speaker */
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outb(0x31, 0x42);
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outb(0x13, 0x42);
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}
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static unsigned long find_end_memory(void)
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{
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int i;
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unsigned long high = 0;
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struct memclust_struct * cluster;
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struct memdesc_struct * memdesc;
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memdesc = (struct memdesc_struct *)
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(INIT_HWRPB->mddt_offset + (unsigned long) INIT_HWRPB);
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cluster = memdesc->cluster;
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for (i = memdesc->numclusters ; i > 0; i--, cluster++) {
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unsigned long tmp;
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tmp = (cluster->start_pfn + cluster->numpages) << PAGE_SHIFT;
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if (tmp > high)
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high = tmp;
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}
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/* round it up to an even number of pages.. */
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high = (high + PAGE_SIZE) & (PAGE_MASK*2);
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return PAGE_OFFSET + high;
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}
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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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{
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extern int _end;
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init_pit();
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if ((CMOS_READ(RTC_FREQ_SELECT) & 0x3f) != 0x26) {
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#if 1
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printk("init_timers: setting RTC_FREQ to 1024/sec\n");
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#endif
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CMOS_WRITE(0x26, RTC_FREQ_SELECT);
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}
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hwrpb = (struct hwrpb_struct*)(IDENT_ADDR + INIT_HWRPB->phys_addr);
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| 150 |
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#ifndef CONFIG_ALPHA_SRM_SETUP
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set_hae(hae.cache); /* sync HAE register w/hae_cache */
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#endif /* !SRM_SETUP */
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wrmces(0x7); /* reset enable correctable error reports */
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ROOT_DEV = to_kdev_t(0x0802); /* sda2 */
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command_line[COMMAND_LINE_SIZE - 1] = '\0';
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/* Hack for Jensen... since we're restricted to 8 or 16
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* chars for boot flags depending on the boot mode,
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* we need some shorthand. This should do for
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* installation. Later we'll add other abbreviations
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* as well...
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*/
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if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
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strcpy(command_line, "root=/dev/fd0 load_ramdisk=1");
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strcpy(saved_command_line, command_line);
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} else {
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strcpy(command_line, COMMAND_LINE);
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strcpy(saved_command_line, COMMAND_LINE);
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}
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printk("Command line: %s\n", command_line);
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*cmdline_p = command_line;
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*memory_start_p = (unsigned long) &_end;
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*memory_end_p = find_end_memory();
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#if defined(CONFIG_ALPHA_LCA)
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*memory_start_p = lca_init(*memory_start_p, *memory_end_p);
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#elif defined(CONFIG_ALPHA_APECS)
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*memory_start_p = apecs_init(*memory_start_p, *memory_end_p);
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#elif defined(CONFIG_ALPHA_CIA)
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*memory_start_p = cia_init(*memory_start_p, *memory_end_p);
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#elif defined(CONFIG_ALPHA_PYXIS)
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*memory_start_p = pyxis_init(*memory_start_p, *memory_end_p);
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#elif defined(CONFIG_ALPHA_T2)
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*memory_start_p = t2_init(*memory_start_p, *memory_end_p);
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#endif
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}
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| 190 |
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# define N(a) (sizeof(a)/sizeof(a[0]))
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| 192 |
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| 193 |
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/* A change was made to the HWRPB via an ECO and the following code tracks
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* a part of the ECO. The HWRPB version must be 5 or higher or the ECO
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* was not implemented in the console firmware. If its at rev 5 or greater
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* we can get the platform ascii string name from the HWRPB. Thats what this
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* function does. It checks the rev level and if the string is in the HWRPB
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* it returns the addtess of the string ... a pointer to the platform name.
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*
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| 200 |
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* Returns:
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* - Pointer to a ascii string if its in the HWRPB
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| 202 |
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* - Pointer to a blank string if the data is not in the HWRPB.
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| 203 |
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*/
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| 204 |
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static char *
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| 205 |
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platform_string(void)
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| 206 |
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{
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| 207 |
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struct dsr_struct *dsr;
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| 208 |
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static char unk_system_string[] = "N/A";
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| 209 |
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| 210 |
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/* Go to the console for the string pointer.
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| 211 |
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* If the rpb_vers is not 5 or greater the rpb
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| 212 |
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* is old and does not have this data in it.
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| 213 |
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*/
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| 214 |
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if (hwrpb->revision < 5)
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| 215 |
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return (unk_system_string);
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| 216 |
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else {
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| 217 |
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/* The Dynamic System Recognition struct
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| 218 |
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* has the system platform name starting
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| 219 |
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* after the character count of the string.
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| 220 |
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*/
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| 221 |
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dsr = ((struct dsr_struct *)
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| 222 |
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((char *)hwrpb + hwrpb->dsr_offset));
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| 223 |
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return ((char *)dsr + (dsr->sysname_off +
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| 224 |
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sizeof(long)));
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| 225 |
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}
|
| 226 |
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}
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| 227 |
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| 228 |
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static void
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| 229 |
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get_sysnames(long type, long variation,
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| 230 |
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char **type_name, char **variation_name)
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| 231 |
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{
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| 232 |
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static char *sys_unknown = "Unknown";
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| 233 |
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static char *systype_names[] = {
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| 234 |
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"0",
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| 235 |
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"ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
|
| 236 |
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"Pelican", "Morgan", "Sable", "Medulla", "Noname",
|
| 237 |
|
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"Turbolaser", "Avanti", "14", "Alcor", "Tradewind",
|
| 238 |
|
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"Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
|
| 239 |
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"Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
|
| 240 |
|
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"Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
|
| 241 |
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"Tsunami", "Wildfire", "CUSCO"
|
| 242 |
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};
|
| 243 |
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| 244 |
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static char *unofficial_names[] = {
|
| 245 |
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"100",
|
| 246 |
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"Ruffian"
|
| 247 |
|
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};
|
| 248 |
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|
| 249 |
|
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static char * eb164_names[] = {"EB164", "PC164", "LX164", "SX164"};
|
| 250 |
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static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3};
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| 251 |
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| 252 |
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static char * alcor_names[] = {"Alcor", "Maverick", "Bret"};
|
| 253 |
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static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
|
| 254 |
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| 255 |
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static char * eb64p_names[] = {"EB64+", "Cabriolet", "AlphaPCI64"};
|
| 256 |
|
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static int eb64p_indices[] = {0,0,1.2};
|
| 257 |
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|
| 258 |
|
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static char * eb66_names[] = {"EB66", "EB66+"};
|
| 259 |
|
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static int eb66_indices[] = {0,0,1};
|
| 260 |
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|
| 261 |
|
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static char * rawhide_names[] = {"Dodge", "Wrangler", "Durango",
|
| 262 |
|
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"Tincup", "DaVinci"};
|
| 263 |
|
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static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
|
| 264 |
|
|
|
| 265 |
|
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long member;
|
| 266 |
|
|
|
| 267 |
|
|
|
| 268 |
|
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/* restore real CABRIO and EB66+ family names, ie EB64+ and EB66 */
|
| 269 |
|
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if (type < 0) type = -type;
|
| 270 |
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|
|
| 271 |
|
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/* if not in the tables, make it UNKNOWN */
|
| 272 |
|
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/* else set type name to family */
|
| 273 |
|
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if (type < N(systype_names)) {
|
| 274 |
|
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*type_name = systype_names[type];
|
| 275 |
|
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} else
|
| 276 |
|
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if ((type > ST_UNOFFICIAL_BIAS) &&
|
| 277 |
|
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(type - ST_UNOFFICIAL_BIAS) < N(unofficial_names)) {
|
| 278 |
|
|
*type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
|
| 279 |
|
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} else {
|
| 280 |
|
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*type_name = sys_unknown;
|
| 281 |
|
|
*variation_name = sys_unknown;
|
| 282 |
|
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return;
|
| 283 |
|
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}
|
| 284 |
|
|
|
| 285 |
|
|
/* set variation to "0"; if variation is zero, done */
|
| 286 |
|
|
*variation_name = systype_names[0];
|
| 287 |
|
|
if (variation == 0) {
|
| 288 |
|
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return;
|
| 289 |
|
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}
|
| 290 |
|
|
|
| 291 |
|
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member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
|
| 292 |
|
|
|
| 293 |
|
|
switch (type) { /* select by family */
|
| 294 |
|
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default: /* default to variation "0" ????FIXME???? */
|
| 295 |
|
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break;
|
| 296 |
|
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case ST_DEC_EB164:
|
| 297 |
|
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if (member < N(eb164_indices))
|
| 298 |
|
|
*variation_name = eb164_names[eb164_indices[member]];
|
| 299 |
|
|
break;
|
| 300 |
|
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case ST_DEC_ALCOR:
|
| 301 |
|
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if (member < N(alcor_indices))
|
| 302 |
|
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*variation_name = alcor_names[alcor_indices[member]];
|
| 303 |
|
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break;
|
| 304 |
|
|
case ST_DEC_EB64P:
|
| 305 |
|
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if (member < N(eb64p_indices))
|
| 306 |
|
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*variation_name = eb64p_names[eb64p_indices[member]];
|
| 307 |
|
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break;
|
| 308 |
|
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case ST_DEC_EB66:
|
| 309 |
|
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if (member < N(eb66_indices))
|
| 310 |
|
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*variation_name = eb66_names[eb66_indices[member]];
|
| 311 |
|
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break;
|
| 312 |
|
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case ST_DEC_RAWHIDE:
|
| 313 |
|
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if (member < N(rawhide_indices))
|
| 314 |
|
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*variation_name = rawhide_names[rawhide_indices[member]];
|
| 315 |
|
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break;
|
| 316 |
|
|
} /* end family switch */
|
| 317 |
|
|
return;
|
| 318 |
|
|
}
|
| 319 |
|
|
|
| 320 |
|
|
int get_cpuinfo(char *buffer)
|
| 321 |
|
|
/* BUFFER is PAGE_SIZE bytes long. */
|
| 322 |
|
|
{
|
| 323 |
|
|
const char *cpu_name[] = {
|
| 324 |
|
|
"EV3", "EV4", "Unknown 1", "LCA4", "EV5", "EV45", "EV56",
|
| 325 |
|
|
"EV6", "PCA56"
|
| 326 |
|
|
};
|
| 327 |
|
|
struct percpu_struct *cpu;
|
| 328 |
|
|
unsigned int cpu_index;
|
| 329 |
|
|
char *systype_name;
|
| 330 |
|
|
char *sysvariation_name;
|
| 331 |
|
|
extern struct unaligned_stat {
|
| 332 |
|
|
unsigned long count, va, pc;
|
| 333 |
|
|
} unaligned[2];
|
| 334 |
|
|
|
| 335 |
|
|
cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
|
| 336 |
|
|
cpu_index = (unsigned) (cpu->type - 1);
|
| 337 |
|
|
get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
|
| 338 |
|
|
&systype_name, &sysvariation_name);
|
| 339 |
|
|
|
| 340 |
|
|
return sprintf(buffer,
|
| 341 |
|
|
"cpu\t\t\t: Alpha\n"
|
| 342 |
|
|
"cpu model\t\t: %s\n"
|
| 343 |
|
|
"cpu variation\t\t: %ld\n"
|
| 344 |
|
|
"cpu revision\t\t: %ld\n"
|
| 345 |
|
|
"cpu serial number\t: %s\n"
|
| 346 |
|
|
"system type\t\t: %s\n"
|
| 347 |
|
|
"system variation\t: %s\n"
|
| 348 |
|
|
"system revision\t\t: %ld\n"
|
| 349 |
|
|
"system serial number\t: %s\n"
|
| 350 |
|
|
"cycle frequency [Hz]\t: %lu\n"
|
| 351 |
|
|
"timer frequency [Hz]\t: %lu.%02lu\n"
|
| 352 |
|
|
"page size [bytes]\t: %ld\n"
|
| 353 |
|
|
"phys. address bits\t: %ld\n"
|
| 354 |
|
|
"max. addr. space #\t: %ld\n"
|
| 355 |
|
|
"BogoMIPS\t\t: %lu.%02lu\n"
|
| 356 |
|
|
"kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
|
| 357 |
|
|
"user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
|
| 358 |
|
|
"platform string\t\t: %s\n",
|
| 359 |
|
|
|
| 360 |
|
|
(cpu_index < N(cpu_name)
|
| 361 |
|
|
? cpu_name[cpu_index] : "Unknown"),
|
| 362 |
|
|
cpu->variation, cpu->revision, (char*)cpu->serial_no,
|
| 363 |
|
|
systype_name, sysvariation_name, hwrpb->sys_revision,
|
| 364 |
|
|
(char*)hwrpb->ssn,
|
| 365 |
|
|
hwrpb->cycle_freq,
|
| 366 |
|
|
hwrpb->intr_freq / 4096,
|
| 367 |
|
|
(100 * hwrpb->intr_freq / 4096) % 100,
|
| 368 |
|
|
hwrpb->pagesize,
|
| 369 |
|
|
hwrpb->pa_bits,
|
| 370 |
|
|
hwrpb->max_asn,
|
| 371 |
|
|
loops_per_sec / 500000, (loops_per_sec / 5000) % 100,
|
| 372 |
|
|
unaligned[0].count, unaligned[0].pc, unaligned[0].va,
|
| 373 |
|
|
unaligned[1].count, unaligned[1].pc, unaligned[1].va,
|
| 374 |
|
|
platform_string());
|
| 375 |
|
|
}
|
| 376 |
|
|
# undef N
|
