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/*
* Copyright (C) 2007 Sascha Hauer, Pengutronix
* Copyright (C) 2011 Marc Kleine-Budde <mkl@pengutronix.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <environment.h>
#include <partition.h>
#include <common.h>
#include <sizes.h>
#include <gpio.h>
#include <init.h>
#include <fs.h>
#include <io.h>
#include <mfd/mc13xxx.h>
#include <i2c/i2c.h>
#include <asm/armlinux.h>
#include <asm/mmu.h>
#include <generated/mach-types.h>
#include <mach/imx-flash-header.h>
#include <mach/imx53-regs.h>
#include <mach/revision.h>
#include <mach/generic.h>
#include <mach/imx5.h>
#include <mach/bbu.h>
#include <mach/iim.h>
/*
* Revision to be passed to kernel. The kernel provided
* by freescale relies on this.
*
* C --> CPU type
* S --> Silicon revision
* B --> Board rev
*
* 31 20 16 12 8 4 0
* | Cmaj | Cmin | B | Smaj | Smin|
*
* e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2
*/
static unsigned int loco_system_rev = 0x00053000;
static void set_silicon_rev( int rev)
{
loco_system_rev = loco_system_rev | (rev & 0xFF);
}
static void set_board_rev(int rev)
{
loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8;
}
#define LOCO_FEC_PHY_RST IMX_GPIO_NR(7, 6)
static void loco_fec_reset(void)
{
gpio_direction_output(LOCO_FEC_PHY_RST, 0);
mdelay(1);
gpio_set_value(LOCO_FEC_PHY_RST, 1);
}
#define MX53_LOCO_USB_PWREN IMX_GPIO_NR(7, 8)
extern char flash_header_imx53_loco_start[];
extern char flash_header_imx53_loco_end[];
static int loco_late_init(void)
{
struct mc13xxx *mc34708;
int rev;
if (!of_machine_is_compatible("fsl,imx53-qsb"))
return 0;
device_detect_by_name("mmc0");
devfs_add_partition("mmc0", 0x40000, 0x20000, DEVFS_PARTITION_FIXED, "env0");
mc34708 = mc13xxx_get();
if (mc34708) {
/* get the board revision from fuse */
rev = readl(MX53_IIM_BASE_ADDR + 0x878);
set_board_rev(rev);
printf("MCIMX53-START-R board 1.0 rev %c\n", (rev == 1) ? 'A' : 'B' );
armlinux_set_revision(loco_system_rev);
} else {
/* so we have a DA9053 based board */
printf("MCIMX53-START board 1.0\n");
armlinux_set_revision(loco_system_rev);
return 0;
}
/* USB PWR enable */
gpio_direction_output(MX53_LOCO_USB_PWREN, 0);
gpio_set_value(MX53_LOCO_USB_PWREN, 1);
loco_fec_reset();
set_silicon_rev(imx_silicon_revision());
armlinux_set_bootparams((void *)0x70000100);
armlinux_set_architecture(MACH_TYPE_MX53_LOCO);
imx53_bbu_internal_mmc_register_handler("mmc", "/dev/mmc0",
BBU_HANDLER_FLAG_DEFAULT, (void *)flash_header_imx53_loco_start,
flash_header_imx53_loco_end - flash_header_imx53_loco_start, 0);
return 0;
}
late_initcall(loco_late_init);
static int loco_postcore_init(void)
{
if (!of_machine_is_compatible("fsl,imx53-qsb"))
return 0;
imx53_init_lowlevel(1000);
return 0;
}
postcore_initcall(loco_postcore_init);
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