| 1 | /*␊ |
| 2 | * This file is part of the flashrom project.␊ |
| 3 | *␊ |
| 4 | * Copyright (C) 2010 Carl-Daniel Hailfinger␊ |
| 5 | *␊ |
| 6 | * This program is free software; you can redistribute it and/or modify␊ |
| 7 | * it under the terms of the GNU General Public License as published by␊ |
| 8 | * the Free Software Foundation; version 2 of the License.␊ |
| 9 | *␊ |
| 10 | * This program is distributed in the hope that it will be useful,␊ |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of␊ |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the␊ |
| 13 | * GNU General Public License for more details.␊ |
| 14 | *␊ |
| 15 | * You should have received a copy of the GNU General Public License␊ |
| 16 | * along with this program; if not, write to the Free Software␊ |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA␊ |
| 18 | */␊ |
| 19 | ␊ |
| 20 | /*␊ |
| 21 | * Contains the processor specific flash enables and system settings.␊ |
| 22 | */␊ |
| 23 | ␊ |
| 24 | #include "flash.h"␊ |
| 25 | #include "programmer.h"␊ |
| 26 | ␊ |
| 27 | #if defined(__i386__) || defined(__x86_64__)␊ |
| 28 | ␊ |
| 29 | int processor_flash_enable(void)␊ |
| 30 | {␊ |
| 31 | ␉/* On x86, flash access is not processor specific except on␊ |
| 32 | ␉ * AMD Elan SC520, AMD Geode and maybe other SoC-style CPUs.␊ |
| 33 | ␉ * FIXME: Move enable_flash_cs5536 and get_flashbase_sc520 here.␊ |
| 34 | ␉ */␊ |
| 35 | ␉return 0;␊ |
| 36 | }␊ |
| 37 | ␊ |
| 38 | #else␊ |
| 39 | ␊ |
| 40 | #if defined (__MIPSEL__) && defined (__linux)␊ |
| 41 | #include <stdio.h>␊ |
| 42 | #include <string.h>␊ |
| 43 | #include <ctype.h>␊ |
| 44 | ␊ |
| 45 | static int is_loongson(void)␊ |
| 46 | {␊ |
| 47 | ␉FILE *cpuinfo;␊ |
| 48 | ␉cpuinfo = fopen("/proc/cpuinfo", "rb");␊ |
| 49 | ␉if (!cpuinfo)␊ |
| 50 | ␉␉return 0;␊ |
| 51 | ␉while (!feof(cpuinfo)) {␊ |
| 52 | ␉␉char line[512], *ptr;␊ |
| 53 | ␉␉if (fgets(line, sizeof(line), cpuinfo) == NULL)␊ |
| 54 | ␉␉␉break;␊ |
| 55 | ␉␉ptr = line;␊ |
| 56 | ␉␉while (*ptr && isspace((unsigned char)*ptr))␊ |
| 57 | ␉␉␉ptr++;␊ |
| 58 | ␉␉/* "cpu" part appears only with some Linux versions. */␊ |
| 59 | ␉␉if (strncmp(ptr, "cpu", strlen("cpu")) == 0)␊ |
| 60 | ␉␉␉ptr += strlen("cpu");␊ |
| 61 | ␉␉while (*ptr && isspace((unsigned char)*ptr))␊ |
| 62 | ␉␉␉ptr++;␊ |
| 63 | ␉␉if (strncmp(ptr, "model", strlen("model")) != 0)␊ |
| 64 | ␉␉␉continue;␊ |
| 65 | ␉␉ptr += strlen("model");␊ |
| 66 | ␉␉while (*ptr && isspace((unsigned char)*ptr))␊ |
| 67 | ␉␉␉ptr++;␊ |
| 68 | ␉␉if (*ptr != ':')␊ |
| 69 | ␉␉␉continue;␊ |
| 70 | ␉␉ptr++;␊ |
| 71 | ␉␉while (*ptr && isspace((unsigned char)*ptr))␊ |
| 72 | ␉␉␉ptr++;␊ |
| 73 | ␉␉fclose(cpuinfo);␊ |
| 74 | ␉␉return (strncmp(ptr, "ICT Loongson-2 V0.3",␊ |
| 75 | ␉␉␉␉strlen("ICT Loongson-2 V0.3")) == 0)␊ |
| 76 | ␉␉ || (strncmp(ptr, "Godson2 V0.3 FPU V0.1",␊ |
| 77 | ␉␉␉␉strlen("Godson2 V0.3 FPU V0.1")) == 0);␊ |
| 78 | ␉}␊ |
| 79 | ␉fclose(cpuinfo);␊ |
| 80 | ␉return 0;␊ |
| 81 | }␊ |
| 82 | #endif␊ |
| 83 | ␊ |
| 84 | int processor_flash_enable(void)␊ |
| 85 | {␊ |
| 86 | ␉/* FIXME: detect loongson on FreeBSD and OpenBSD as well. */␊ |
| 87 | #if defined (__MIPSEL__) && defined (__linux)␊ |
| 88 | ␉if (is_loongson()) {␊ |
| 89 | ␉␉flashbase = 0x1fc00000;␊ |
| 90 | ␉␉return 0;␊ |
| 91 | ␉}␊ |
| 92 | #endif␊ |
| 93 | ␉/* Not implemented yet. Oh well. */␊ |
| 94 | ␉return 1;␊ |
| 95 | }␊ |
| 96 | ␊ |
| 97 | #endif␊ |
| 98 | |
