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474086f8ff
Change-Id: I990bae6be548d117d12a69b3d5cda1c93abb238d Signed-off-by: Anastasia Klimchuk <aklm@flashrom.org> Reviewed-on: https://review.coreboot.org/c/flashrom/+/89938 Reviewed-by: Antonio Vázquez Blanco <antoniovazquezblanco@gmail.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* SPDX-License-Identifier: GPL-2.0-only
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* SPDX-FileCopyrightText: 2010 Carl-Daniel Hailfinger
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*/
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/*
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* Contains the processor specific flash enables and system settings.
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*/
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#include "flash.h"
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#include "programmer.h"
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#if defined (__MIPSEL__) && defined (__linux)
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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static int is_loongson(void)
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{
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FILE *cpuinfo;
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cpuinfo = fopen("/proc/cpuinfo", "rb");
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if (!cpuinfo)
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return 0;
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while (!feof(cpuinfo)) {
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char line[512], *ptr;
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if (fgets(line, sizeof(line), cpuinfo) == NULL)
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break;
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ptr = line;
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while (*ptr && isspace((unsigned char)*ptr))
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ptr++;
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/* "cpu" part appears only with some Linux versions. */
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if (strncmp(ptr, "cpu", strlen("cpu")) == 0)
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ptr += strlen("cpu");
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while (*ptr && isspace((unsigned char)*ptr))
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ptr++;
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if (strncmp(ptr, "model", strlen("model")) != 0)
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continue;
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ptr += strlen("model");
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while (*ptr && isspace((unsigned char)*ptr))
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ptr++;
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if (*ptr != ':')
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continue;
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ptr++;
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while (*ptr && isspace((unsigned char)*ptr))
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ptr++;
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(void)fclose(cpuinfo);
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return (strncmp(ptr, "ICT Loongson-2 V0.3", strlen("ICT Loongson-2 V0.3")) == 0) ||
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(strncmp(ptr, "Godson2 V0.3 FPU V0.1", strlen("Godson2 V0.3 FPU V0.1")) == 0);
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}
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(void)fclose(cpuinfo);
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return 0;
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}
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#endif
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int processor_flash_enable(void)
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{
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/* Default to 1 to catch not implemented architectures. */
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int ret = 1;
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/* FIXME: detect loongson on FreeBSD and OpenBSD as well. */
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#if defined (__MIPSEL__) && defined (__linux)
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if (is_loongson()) {
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flashbase = 0x1fc00000;
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ret = 0;
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}
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#elif defined(__i386__) || defined(__x86_64__)
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/* On x86, flash access is not processor specific except on
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* AMD Elan SC520, AMD Geode and maybe other SoC-style CPUs.
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* FIXME: Move enable_flash_cs5536 and get_flashbase_sc520 here.
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*/
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ret = 0;
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#endif
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return ret;
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}
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