137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/*
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* Copyright (C) 2007 Sascha Hauer, Pengutronix
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* Copyright (C) 2011 Marc Kleine-Budde <mkl@pengutronix.de>
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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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#include <environment.h>
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#include <partition.h>
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#include <common.h>
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#include <sizes.h>
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#include <gpio.h>
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#include <init.h>
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#include <fs.h>
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#include <io.h>
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#include <of.h>
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#include <mfd/mc13xxx.h>
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#include <i2c/i2c.h>
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#include <asm/armlinux.h>
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#include <asm/mmu.h>
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#include <generated/mach-types.h>
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#include <mach/imx-flash-header.h>
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#include <mach/imx53-regs.h>
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#include <mach/revision.h>
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#include <mach/generic.h>
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#include <mach/imx5.h>
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#include <mach/bbu.h>
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#include <mach/iim.h>
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/*
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* Revision to be passed to kernel. The kernel provided
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* by freescale relies on this.
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*
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* C --> CPU type
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* S --> Silicon revision
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* B --> Board rev
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*
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* 31 20 16 12 8 4 0
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* | Cmaj | Cmin | B | Smaj | Smin|
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*
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* e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2
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*/
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static unsigned int loco_system_rev = 0x00053000;
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static void set_silicon_rev( int rev)
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{
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loco_system_rev = loco_system_rev | (rev & 0xFF);
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}
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static void set_board_rev(int rev)
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{
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loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8;
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}
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#define LOCO_FEC_PHY_RST IMX_GPIO_NR(7, 6)
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static void loco_fec_reset(void)
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{
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gpio_direction_output(LOCO_FEC_PHY_RST, 0);
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mdelay(1);
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gpio_set_value(LOCO_FEC_PHY_RST, 1);
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}
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#define MX53_LOCO_USB_PWREN IMX_GPIO_NR(7, 8)
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extern char flash_header_imx53_loco_start[];
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extern char flash_header_imx53_loco_end[];
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static int loco_late_init(void)
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{
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struct mc13xxx *mc34708;
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int rev;
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if (!of_machine_is_compatible("fsl,imx53-qsb"))
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return 0;
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device_detect_by_name("mmc0");
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devfs_add_partition("mmc0", 0x40000, 0x20000, DEVFS_PARTITION_FIXED, "env0");
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mc34708 = mc13xxx_get();
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if (mc34708) {
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/* get the board revision from fuse */
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rev = readl(MX53_IIM_BASE_ADDR + 0x878);
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set_board_rev(rev);
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printf("MCIMX53-START-R board 1.0 rev %c\n", (rev == 1) ? 'A' : 'B' );
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armlinux_set_revision(loco_system_rev);
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} else {
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/* so we have a DA9053 based board */
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printf("MCIMX53-START board 1.0\n");
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armlinux_set_revision(loco_system_rev);
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return 0;
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}
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/* USB PWR enable */
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gpio_direction_output(MX53_LOCO_USB_PWREN, 0);
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gpio_set_value(MX53_LOCO_USB_PWREN, 1);
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loco_fec_reset();
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set_silicon_rev(imx_silicon_revision());
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armlinux_set_bootparams((void *)0x70000100);
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armlinux_set_architecture(MACH_TYPE_MX53_LOCO);
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imx53_bbu_internal_mmc_register_handler("mmc", "/dev/mmc0",
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BBU_HANDLER_FLAG_DEFAULT, (void *)flash_header_imx53_loco_start,
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flash_header_imx53_loco_end - flash_header_imx53_loco_start, 0);
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return 0;
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}
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late_initcall(loco_late_init);
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static int loco_postcore_init(void)
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{
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if (!of_machine_is_compatible("fsl,imx53-qsb"))
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return 0;
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imx53_init_lowlevel(1000);
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return 0;
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}
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postcore_initcall(loco_postcore_init);
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