diff options
Diffstat (limited to 'arch/alpha/kernel/setup.c')
| -rw-r--r-- | arch/alpha/kernel/setup.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c new file mode 100644 index 000000000..23a2efd65 --- /dev/null +++ b/arch/alpha/kernel/setup.c @@ -0,0 +1,172 @@ +/* + * 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/ldt.h> +#include <linux/user.h> +#include <linux/a.out.h> +#include <linux/tty.h> +#include <linux/delay.h> + +#include <asm/segment.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; + +/* + * 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_PGE +#define COMMAND_LINE ((char*)(PARAM + 0x0000)) +#define COMMAND_LINE_SIZE 256 + +static char command_line[COMMAND_LINE_SIZE] = { 0, }; + +/* + * 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 EGA+ colour display. + */ +struct screen_info screen_info = { + 0, 0, /* 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 */ +}; + +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; + + hwrpb = (struct hwrpb_struct*)(IDENT_ADDR + INIT_HWRPB->phys_addr); + + set_hae(hae.cache); /* sync HAE register w/hae_cache */ + + ROOT_DEV = 0x0802; /* sda2 */ +#ifndef CONFIG_PCI + aux_device_present = 0xaa; +#else + aux_device_present = 0x00; +#endif + command_line[COMMAND_LINE_SIZE - 1] = '\0'; + strcpy(command_line, COMMAND_LINE); + + *cmdline_p = command_line; + *memory_start_p = (unsigned long) &_end; + *memory_end_p = find_end_memory(); + +#ifdef CONFIG_PCI + *memory_start_p = lca_init(*memory_start_p, *memory_end_p); +#endif +} + +asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on) +{ + return -EIO; +} + + +/* + * BUFFER is PAGE_SIZE bytes long. + */ +int get_cpuinfo(char *buffer) +{ + const char *cpu_name[] = { + "EV3", "EV4", "Unknown 1", "LCA4", "EV5", "EV45" + }; + const char *systype_name[] = { + "ADU", "Cobra", "Ruby", "Flamingo", "Unknown 1", "Jensen", + "Pelican", "Unknown 2", "Sable", "AXPvme", "Noname", + "Turbolaser", "Avanti", "Mustang", "Alcor", "Unknown 3", + "Mikasa", "Unknown3", "EB66", "EB64+" + }; + struct percpu_struct *cpu; + unsigned int cpu_index, system_index; +# define N(a) (sizeof(a)/sizeof(a[0])) + + cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); + cpu_index = (unsigned) (cpu->type - 1); + system_index = (unsigned) (hwrpb->sys_type - 1); + + 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", + + (cpu_index < N(cpu_name) ? cpu_name[cpu_index] : "Unknown"), + cpu->variation, cpu->revision, (char*)cpu->serial_no, + (system_index < N(systype_name) ? systype_name[system_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); +# undef N +} |