114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
/*
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* Copyright (C) 2012 Free Electrons
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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*/
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#include <common.h>
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#include <environment.h>
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#include <fcntl.h>
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#include <fs.h>
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#include <globalvar.h>
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#include <libbb.h>
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#include <libfile.h>
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#include <magicvar.h>
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#include <asm/armlinux.h>
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enum board_type {
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BOARD_ID_CFA10036 = 0,
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BOARD_ID_CFA10037 = 1,
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BOARD_ID_CFA10049 = 2,
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BOARD_ID_CFA10055 = 3,
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BOARD_ID_CFA10056 = 4,
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BOARD_ID_CFA10057 = 5,
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BOARD_ID_CFA10058 = 6,
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};
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struct cfa_eeprom_info {
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u8 board_id;
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}__attribute__ ((packed));
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static int cfa10036_read_eeprom(const char *file, struct cfa_eeprom_info *info)
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{
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int fd;
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int ret;
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fd = open(file, O_RDONLY);
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if (fd < 0) {
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ret = fd;
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goto err;
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}
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ret = read_full(fd, info, sizeof(*info));
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if (ret < 0)
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goto err_open;
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ret = 0;
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err_open:
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close(fd);
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err:
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if (ret)
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pr_err("can not read eeprom %s (%s)\n", file, strerror(ret));
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return ret;
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}
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void cfa10036_detect_hw(void)
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{
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enum board_type cfa_type;
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struct cfa_eeprom_info info;
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char *board_name;
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int ret;
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ret = cfa10036_read_eeprom("/dev/eeprom0", &info);
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if (ret)
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cfa_type = BOARD_ID_CFA10036;
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else
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cfa_type = info.board_id;
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switch (cfa_type) {
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case BOARD_ID_CFA10036:
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board_name = "cfa10036";
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break;
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case BOARD_ID_CFA10037:
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board_name = "cfa10037";
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break;
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case BOARD_ID_CFA10049:
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board_name = "cfa10049";
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break;
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case BOARD_ID_CFA10055:
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board_name = "cfa10055";
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break;
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case BOARD_ID_CFA10056:
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board_name = "cfa10056";
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break;
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case BOARD_ID_CFA10057:
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board_name = "cfa10057";
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break;
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case BOARD_ID_CFA10058:
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board_name = "cfa10058";
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break;
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default:
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pr_err("Board ID not supported\n");
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return;
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}
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globalvar_add_simple("board.variant", board_name);
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pr_info("Booting on a CFA10036 with %s\n", board_name);
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}
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BAREBOX_MAGICVAR_NAMED(global_board_variant, global.board.variant, "The board variant");
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