| 1 | /* |
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| 2 | * This file is part of the flashrom project. |
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| 3 | * |
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| 4 | * Copyright (C) 2010 Carl-Daniel Hailfinger |
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| 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or modify |
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| 7 | * it under the terms of the GNU General Public License as published by |
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| 8 | * the Free Software Foundation; version 2 of the License. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 18 | */ |
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| 19 | |
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| 20 | /* |
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| 21 | * Contains the processor specific flash enables and system settings. |
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| 22 | */ |
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| 23 | |
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| 24 | #include "flash.h" |
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| 25 | #include "programmer.h" |
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| 26 | |
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| 27 | #if defined(__i386__) || defined(__x86_64__) |
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| 28 | |
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| 29 | int processor_flash_enable(void) |
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| 30 | { |
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| 31 | /* On x86, flash access is not processor specific except on |
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| 32 | * AMD Elan SC520, AMD Geode and maybe other SoC-style CPUs. |
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| 33 | * FIXME: Move enable_flash_cs5536 and get_flashbase_sc520 here. |
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| 34 | */ |
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| 35 | return 0; |
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| 36 | } |
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| 37 | |
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| 38 | #else |
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| 39 | |
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| 40 | #if defined (__MIPSEL__) && defined (__linux) |
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| 41 | #include <stdio.h> |
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| 42 | #include <string.h> |
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| 43 | #include <ctype.h> |
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| 44 | |
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| 45 | static int is_loongson(void) |
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| 46 | { |
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| 47 | FILE *cpuinfo; |
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| 48 | cpuinfo = fopen("/proc/cpuinfo", "rb"); |
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| 49 | if (!cpuinfo) |
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| 50 | return 0; |
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| 51 | while (!feof(cpuinfo)) { |
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| 52 | char line[512], *ptr; |
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| 53 | if (fgets(line, sizeof(line), cpuinfo) == NULL) |
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| 54 | break; |
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| 55 | ptr = line; |
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| 56 | while (*ptr && isspace((unsigned char)*ptr)) |
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| 57 | ptr++; |
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| 58 | /* "cpu" part appears only with some Linux versions. */ |
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| 59 | if (strncmp(ptr, "cpu", strlen("cpu")) == 0) |
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| 60 | ptr += strlen("cpu"); |
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| 61 | while (*ptr && isspace((unsigned char)*ptr)) |
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| 62 | ptr++; |
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| 63 | if (strncmp(ptr, "model", strlen("model")) != 0) |
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| 64 | continue; |
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| 65 | ptr += strlen("model"); |
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| 66 | while (*ptr && isspace((unsigned char)*ptr)) |
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| 67 | ptr++; |
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| 68 | if (*ptr != ':') |
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| 69 | continue; |
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| 70 | ptr++; |
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| 71 | while (*ptr && isspace((unsigned char)*ptr)) |
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| 72 | ptr++; |
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| 73 | fclose(cpuinfo); |
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| 74 | return (strncmp(ptr, "ICT Loongson-2 V0.3", |
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| 75 | strlen("ICT Loongson-2 V0.3")) == 0) |
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| 76 | || (strncmp(ptr, "Godson2 V0.3 FPU V0.1", |
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| 77 | strlen("Godson2 V0.3 FPU V0.1")) == 0); |
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| 78 | } |
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| 79 | fclose(cpuinfo); |
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| 80 | return 0; |
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| 81 | } |
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| 82 | #endif |
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| 83 | |
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| 84 | int processor_flash_enable(void) |
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| 85 | { |
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| 86 | /* FIXME: detect loongson on FreeBSD and OpenBSD as well. */ |
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| 87 | #if defined (__MIPSEL__) && defined (__linux) |
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| 88 | if (is_loongson()) { |
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| 89 | flashbase = 0x1fc00000; |
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| 90 | return 0; |
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| 91 | } |
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| 92 | #endif |
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| 93 | /* Not implemented yet. Oh well. */ |
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| 94 | return 1; |
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| 95 | } |
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| 96 | |
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| 97 | #endif |
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