82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <init.h>
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#include <common.h>
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#include <asm/io.h>
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#include <mach/imx51-regs.h>
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#include "gpio.h"
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void *imx_gpio_base[] = {
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(void *)0x87f84000,
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(void *)0x73f88000,
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(void *)0x73f8c000,
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(void *)0x73f90000,
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};
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int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;
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#define SI_REV 0x48
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static u32 mx51_silicon_revision;
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static char *mx51_rev_string = "unknown";
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int imx_silicon_revision(void)
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{
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return mx51_silicon_revision;
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}
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static int query_silicon_revision(void)
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{
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void __iomem *rom = MX51_IROM_BASE_ADDR;
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u32 rev;
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rev = readl(rom + SI_REV);
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switch (rev) {
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case 0x1:
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mx51_silicon_revision = MX51_CHIP_REV_1_0;
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mx51_rev_string = "1.0";
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break;
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case 0x2:
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mx51_silicon_revision = MX51_CHIP_REV_1_1;
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mx51_rev_string = "1.1";
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break;
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case 0x10:
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mx51_silicon_revision = MX51_CHIP_REV_2_0;
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mx51_rev_string = "2.0";
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break;
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case 0x20:
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mx51_silicon_revision = MX51_CHIP_REV_3_0;
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mx51_rev_string = "3.0";
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break;
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default:
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mx51_silicon_revision = 0;
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}
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return 0;
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}
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core_initcall(query_silicon_revision);
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static int imx51_print_silicon_rev(void)
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{
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printf("detected i.MX51 rev %s\n", mx51_rev_string);
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return 0;
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}
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device_initcall(imx51_print_silicon_rev);
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