Subversion Repositories HelenOS

Rev

Rev 2128 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2128 Rev 2465
Line 1... Line 1...
1 
/*
 1 
/*
2 
 * Copyright (c) 2003-2004 Jakub Jermar
 2 
 * Copyright (c) 2007 Michal Kebrt
3 
 * All rights reserved.
 3 
 * All rights reserved.
4 
 *
 4 
 *
5 
 * Redistribution and use in source and binary forms, with or without
 5 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions
 6 
 * modification, are permitted provided that the following conditions
7 
 * are met:
 7 
 * are met:
Line 28... Line 28...
28 
 
 28 
 
29 
/** @addtogroup arm32
 29 
/** @addtogroup arm32
30 
 * @{
 30 
 * @{
31 
 */
 31 
 */
32 
/** @file
 32 
/** @file
- 
 
 33 
 *  @brief CPU identification.
33 
 */
 34 
 */
34 
 
 35 
 
- 
 
 36 
#include <arch/cpu.h>
35 
#include <cpu.h>
 37 
#include <cpu.h>
- 
 
 38 
#include <arch.h>
36 
#include <print.h> 
39 
#include <print.h> 
37 
 
 40 
 
- 
 
 41 
/** Number of indexes left out in the #imp_data array */
- 
 
 42 
#define IMP_DATA_START_OFFSET 0x40
- 
 
 43 
 
- 
 
 44 
/** Implementators (vendor) names */
- 
 
 45 
static char *imp_data[] = {
- 
 
 46 
    "?",                    /* IMP_DATA_START_OFFSET */
- 
 
 47 
    "ARM Ltd",              /* 0x41 */
- 
 
 48 
    "",                 /* 0x42 */
- 
 
 49 
    "",                                 /* 0x43 */
- 
 
 50 
    "Digital Equipment Corporation",    /* 0x44 */
- 
 
 51 
    "", "", "", "", "", "", "", "", "", "", /* 0x45 - 0x4e */
- 
 
 52 
    "", "", "", "", "", "", "", "", "", "", /* 0x4f - 0x58 */
- 
 
 53 
    "", "", "", "", "", "", "", "", "", "", /* 0x59 - 0x62 */
- 
 
 54 
    "", "", "", "", "", "",         /* 0x63 - 0x68 */
- 
 
 55 
    "Intel Corporation"         /* 0x69 */
- 
 
 56 
};
- 
 
 57 
 
- 
 
 58 
/** Length of the #imp_data array */
- 
 
 59 
static int imp_data_length = sizeof(imp_data) / sizeof(char *);
- 
 
 60 
 
- 
 
 61 
/** Architecture names */
- 
 
 62 
static char *arch_data[] = {
- 
 
 63 
    "?",       /* 0x0 */
- 
 
 64 
    "4",       /* 0x1 */
- 
 
 65 
    "4T",      /* 0x2 */
- 
 
 66 
    "5",       /* 0x3 */
- 
 
 67 
    "5T",      /* 0x4 */
- 
 
 68 
    "5TE",     /* 0x5 */
- 
 
 69 
    "5TEJ",    /* 0x6 */
- 
 
 70 
    "6"        /* 0x7 */
- 
 
 71 
};
- 
 
 72 
 
- 
 
 73 
/** Length of the #arch_data array */
- 
 
 74 
static int arch_data_length = sizeof(arch_data) / sizeof(char *);
- 
 
 75 
 
- 
 
 76 
 
- 
 
 77 
/** Retrieves processor identification from CP15 register 0.
- 
 
 78 
 *
- 
 
 79 
 * @param cpu Structure for storing CPU identification.
- 
 
 80 
 */
- 
 
 81 
static void arch_cpu_identify(cpu_arch_t *cpu)
- 
 
 82 
{
- 
 
 83 
    uint32_t ident;
- 
 
 84 
    asm volatile (
- 
 
 85 
        "mrc p15, 0, %0, c0, c0, 0\n"
- 
 
 86 
        : "=r" (ident)
- 
 
 87 
    );
- 
 
 88 
 
- 
 
 89 
    cpu->imp_num = ident >> 24;
- 
 
 90 
    cpu->variant_num = (ident << 8) >> 28;
- 
 
 91 
    cpu->arch_num = (ident << 12) >> 28;
- 
 
 92 
    cpu->prim_part_num = (ident << 16) >> 20;
- 
 
 93 
    cpu->rev_num = (ident << 28) >> 28;
- 
 
 94 
}
- 
 
 95 
 
- 
 
 96 
/** Does nothing on ARM. */
38 
void cpu_arch_init(void)
 97 
void cpu_arch_init(void)
39 
{
 98 
{
40 
}
 99 
}
41 
 
 100 
 
- 
 
 101 
/** Retrieves processor identification and stores it to #CPU.arch */
42 
void cpu_identify(void)
 102 
void cpu_identify(void)
43 
{
 103 
{
44 
    /* TODO */
 104 
    arch_cpu_identify(&CPU->arch);
45 
}
 105 
}
46 
 
 106 
 
- 
 
 107 
/** Prints CPU identification. */
47 
void cpu_print_report(cpu_t *m)
 108 
void cpu_print_report(cpu_t *m)
48 
{
 109 
{
49 
    /* TODO */
 110 
    char * vendor = imp_data[0];
- 
 
 111 
    char * architecture = arch_data[0];
- 
 
 112 
    cpu_arch_t * cpu_arch = &m->arch;
- 
 
 113 
 
- 
 
 114 
    if ((cpu_arch->imp_num) > 0 &&
- 
 
 115 
        (cpu_arch->imp_num < (imp_data_length + IMP_DATA_START_OFFSET))) {
- 
 
 116 
        vendor = imp_data[cpu_arch->imp_num - IMP_DATA_START_OFFSET];
- 
 
 117 
    }
- 
 
 118 
 
- 
 
 119 
    if ((cpu_arch->arch_num) > 0 &&
- 
 
 120 
        (cpu_arch->arch_num < arch_data_length)) {
- 
 
 121 
        architecture = arch_data[cpu_arch->arch_num];
- 
 
 122 
    }
- 
 
 123 
 
- 
 
 124 
    printf("cpu%d: vendor=%s, architecture=ARM%s, part number=%x, "
- 
 
 125 
        "variant=%x, revision=%x\n",
- 
 
 126 
        m->id, vendor, architecture, cpu_arch->prim_part_num,
- 
 
 127 
        cpu_arch->variant_num, cpu_arch->rev_num);
50 
}
 128 
}
51 
 
 129 
 
52 
/** @}
 130 
/** @}
53 
 */
 131 
 */