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2128 | jermar | 1 | /* |
2189 | kebrt | 2 | * Copyright (c) 2007 Michal Kebrt |
2128 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup arm32 |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
2189 | kebrt | 35 | #include <arch/cpu.h> |
2128 | jermar | 36 | #include <cpu.h> |
2189 | kebrt | 37 | #include <arch.h> |
2128 | jermar | 38 | #include <print.h> |
39 | |||
2189 | kebrt | 40 | |
41 | /** Implementators (vendor) names */ |
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42 | static char * imp_data[] = { |
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43 | "?", |
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44 | "ARM Ltd", /* 0x41 */ |
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45 | "", /* 0x42 */ |
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46 | "", /* 0x43 */ |
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47 | "Digital Equipment Corporation", /* 0x44 */ |
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48 | "", "", "", "", "", "", "", "", "", "", "", /* 0x4f */ |
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49 | "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 0x5f */ |
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50 | "", "", "", "", "", "", "", "", "", /* 0x68 */ |
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51 | "Intel Corporation" /* 0x69 */ |
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52 | }; |
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53 | |||
54 | /** Length of imp_data array */ |
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55 | static int imp_data_length = sizeof(imp_data)/sizeof(char *); |
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56 | |||
57 | /** Architecture names */ |
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58 | static char * arch_data[] = { |
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59 | "?", /* 0x0 */ |
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60 | "4", /* 0x1 */ |
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61 | "4T", /* 0x2 */ |
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62 | "5", /* 0x3 */ |
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63 | "5T", /* 0x4 */ |
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64 | "5TE", /* 0x5 */ |
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65 | "5TEJ", /* 0x6 */ |
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66 | "6" /* 0x7 */ |
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67 | }; |
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68 | |||
69 | /** Length of arch_data array */ |
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70 | static int arch_data_length = sizeof(arch_data)/sizeof(char *); |
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71 | |||
72 | |||
73 | |||
2128 | jermar | 74 | void cpu_arch_init(void) |
75 | { |
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2189 | kebrt | 76 | /* TODO */ |
2128 | jermar | 77 | } |
78 | |||
2189 | kebrt | 79 | /** |
80 | * Retrieves processor identification from CP15 register 0. |
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81 | * |
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82 | * @param cpu structure for storing identification |
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83 | */ |
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84 | static void arch_cpu_identify(cpu_arch_t * cpu) |
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2128 | jermar | 85 | { |
2189 | kebrt | 86 | uint32_t ident; |
87 | asm volatile ( |
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88 | "mrc p15, 0, %0, c0, c0, 0 \n" |
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89 | : "=r" (ident) |
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90 | ); |
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91 | |||
92 | cpu->imp_num = ident >> 24; |
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93 | cpu->variant_num = (ident << 8) >> 28; |
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94 | cpu->arch_num = (ident << 12) >> 28; |
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95 | cpu->prim_part_num = (ident << 16) >> 20; |
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96 | cpu->rev_num = (ident << 28) >> 28; |
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2128 | jermar | 97 | } |
98 | |||
2189 | kebrt | 99 | |
100 | void cpu_identify(void) |
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101 | { |
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102 | arch_cpu_identify(&CPU->arch); |
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103 | } |
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104 | |||
105 | |||
2128 | jermar | 106 | void cpu_print_report(cpu_t *m) |
107 | { |
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2189 | kebrt | 108 | char * vendor = imp_data[0]; |
109 | char * architecture = arch_data[0]; |
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110 | cpu_arch_t * cpu_arch = &m->arch; |
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111 | |||
112 | if ( (cpu_arch->imp_num) > 0 && (cpu_arch->imp_num < (imp_data_length + 0x40)) ) { |
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113 | vendor = imp_data[cpu_arch->imp_num - 0x40]; |
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114 | } |
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115 | |||
116 | if ( (cpu_arch->arch_num) > 0 && (cpu_arch->arch_num < arch_data_length) ) { |
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117 | architecture = arch_data[cpu_arch->arch_num]; |
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118 | } |
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119 | |||
2291 | kebrt | 120 | printf("vendor: %s, architecture: ARM %s, part number: %x, variant: %x, revision: %x\n", |
2189 | kebrt | 121 | vendor, architecture, cpu_arch->prim_part_num, cpu_arch->variant_num, cpu_arch->rev_num); |
122 | |||
2128 | jermar | 123 | } |
124 | |||
125 | /** @} |
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126 | */ |