/*
 * Copyright (C) 2009 Eric Benard, Eukrea Electromatique
 * Based on pcm038.c which is :
 * Copyright (C) 2007 Sascha Hauer, Pengutronix 
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

#include <common.h>
#include <net.h>
#include <cfi_flash.h>
#include <init.h>
#include <environment.h>
#include <mach/imx-regs.h>
#include <fec.h>
#include <notifier.h>
#include <mach/gpio.h>
#include <asm/armlinux.h>
#include <asm/mach-types.h>
#include <mach/pmic.h>
#include <partition.h>
#include <fs.h>
#include <fcntl.h>
#include <nand.h>
#include <command.h>
#include <asm/io.h>
#include <mach/imx-nand.h>
#include <mach/imx-pll.h>
#include <ns16550.h>
#include <asm/mmu.h>

static struct device_d cfi_dev = {
	.name     = "cfi_flash",
	.map_base = 0xC0000000,
	.size     = 32 * 1024 * 1024,
};
#ifdef CONFIG_EUKREA_CPUIMX27_NOR_64MB
static struct device_d cfi_dev1 = {
	.name     = "cfi_flash",
	.map_base = 0xC2000000,
	.size     = 32 * 1024 * 1024,
};
#endif

static struct memory_platform_data ram_pdata = {
	.name = "ram0",
	.flags = DEVFS_RDWR,
};

#if defined CONFIG_EUKREA_CPUIMX27_SDRAM_256MB
#define SDRAM0	256
#elif defined CONFIG_EUKREA_CPUIMX27_SDRAM_128MB
#define SDRAM0	128
#endif

static struct device_d sdram_dev = {
	.name     = "mem",
	.map_base = 0xa0000000,
	.size     = SDRAM0 * 1024 * 1024,
	.platform_data = &ram_pdata,
};

static struct fec_platform_data fec_info = {
	.xcv_type = MII100,
	.phy_addr = 1,
};

static struct device_d fec_dev = {
	.name     = "fec_imx",
	.map_base = 0x1002b000,
	.platform_data	= &fec_info,
};

struct imx_nand_platform_data nand_info = {
	.width = 1,
	.hw_ecc = 1,
	.flash_bbt = 1,
};

static struct device_d nand_dev = {
	.name     = "imx_nand",
	.map_base = 0xd8000000,
	.platform_data	= &nand_info,
};

#ifdef CONFIG_DRIVER_SERIAL_NS16550
unsigned int quad_uart_read(unsigned long base, unsigned char reg_idx)
{
	unsigned int reg_addr = (unsigned int)base;
	reg_addr += reg_idx << 1;
	return 0xff & readw(reg_addr);
}
EXPORT_SYMBOL(quad_uart_read);

void quad_uart_write(unsigned int val, unsigned long base,
		     unsigned char reg_idx)
{
	unsigned int reg_addr = (unsigned int)base;
	reg_addr += reg_idx << 1;
	writew(0xff & val, reg_addr);
}
EXPORT_SYMBOL(quad_uart_write);

static struct NS16550_plat quad_uart_serial_plat = {
	.clock = 14745600,
	.f_caps = CONSOLE_STDIN | CONSOLE_STDOUT | CONSOLE_STDERR,
	.reg_read = quad_uart_read,
	.reg_write = quad_uart_write,
};

#ifdef CONFIG_EUKREA_CPUIMX27_QUART1
#define QUART_OFFSET 0x200000
#elif defined CONFIG_EUKREA_CPUIMX27_QUART2
#define QUART_OFFSET 0x400000
#elif defined CONFIG_EUKREA_CPUIMX27_QUART3
#define QUART_OFFSET 0x800000
#elif defined CONFIG_EUKREA_CPUIMX27_QUART4
#define QUART_OFFSET 0x1000000
#endif

static struct device_d quad_uart_serial_device = {
	.name = "serial_ns16550",
	.map_base = IMX_CS3_BASE + QUART_OFFSET,
	.size = 0xF,
	.platform_data = (void *)&quad_uart_serial_plat,
};
#endif

#ifdef CONFIG_MMU
static void eukrea_cpuimx27_mmu_init(void)
{
	mmu_init();

	arm_create_section(0xa0000000, 0xa0000000, 128, PMD_SECT_DEF_CACHED);
	arm_create_section(0xb0000000, 0xa0000000, 128, PMD_SECT_DEF_UNCACHED);

	setup_dma_coherent(0x10000000);

#if TEXT_BASE & (0x100000 - 1)
#warning cannot create vector section. Adjust TEXT_BASE to a 1M boundary
#else
	arm_create_section(0x0,        TEXT_BASE,   1, PMD_SECT_DEF_UNCACHED);
#endif
	mmu_enable();
}
#else
static void eukrea_cpuimx27_mmu_init(void)
{
}
#endif

static int eukrea_cpuimx27_devices_init(void)
{
	char *envdev = "no";
	int i;

	unsigned int mode[] = {
		PD0_AIN_FEC_TXD0,
		PD1_AIN_FEC_TXD1,
		PD2_AIN_FEC_TXD2,
		PD3_AIN_FEC_TXD3,
		PD4_AOUT_FEC_RX_ER,
		PD5_AOUT_FEC_RXD1,
		PD6_AOUT_FEC_RXD2,
		PD7_AOUT_FEC_RXD3,
		PD8_AF_FEC_MDIO,
		PD9_AIN_FEC_MDC | GPIO_PUEN,
		PD10_AOUT_FEC_CRS,
		PD11_AOUT_FEC_TX_CLK,
		PD12_AOUT_FEC_RXD0,
		PD13_AOUT_FEC_RX_DV,
		PD14_AOUT_FEC_CLR,
		PD15_AOUT_FEC_COL,
		PD16_AIN_FEC_TX_ER,
		PF23_AIN_FEC_TX_EN,
#ifdef CONFIG_DRIVER_SERIAL_IMX
		PE12_PF_UART1_TXD,
		PE13_PF_UART1_RXD,
		PE14_PF_UART1_CTS,
		PE15_PF_UART1_RTS,
#endif
	};

	eukrea_cpuimx27_mmu_init();

	/* configure 16 bit nor flash on cs0 */
	CS0U = 0x0000CC03;
	CS0L = 0xa0330D01;
	CS0A = 0x00220800;

	/* initizalize gpios */
	for (i = 0; i < ARRAY_SIZE(mode); i++)
		imx_gpio_mode(mode[i]);

	register_device(&cfi_dev);
#ifdef CONFIG_EUKREA_CPUIMX27_NOR_64MB
	register_device(&cfi_dev1);
#endif
	register_device(&nand_dev);
	register_device(&sdram_dev);

	devfs_add_partition("nor0", 0x00000, 0x40000, PARTITION_FIXED, "self0");
	devfs_add_partition("nor0", 0x40000, 0x20000, PARTITION_FIXED, "env0");
	protect_file("/dev/env0", 1);
	envdev = "NOR";

	printf("Using environment in %s Flash\n", envdev);

	armlinux_add_dram(&sdram_dev);
	armlinux_set_bootparams((void *)0xa0000100);
	armlinux_set_architecture(MACH_TYPE_CPUIMX27);

	return 0;
}

device_initcall(eukrea_cpuimx27_devices_init);

#ifdef CONFIG_DRIVER_SERIAL_IMX
static struct device_d eukrea_cpuimx27_serial_device = {
	.name     = "imx_serial",
	.map_base = IMX_UART1_BASE,
	.size     = 4096,
};
#endif

static int eukrea_cpuimx27_console_init(void)
{
#ifdef CONFIG_DRIVER_SERIAL_IMX
	register_device(&eukrea_cpuimx27_serial_device);
#endif
	/* configure 8 bit UART on cs3 */
	FMCR &= ~0x2;
	CS3U = 0x0000DCF6;
	CS3L = 0x444A4541;
	CS3A = 0x44443302;
#ifdef CONFIG_DRIVER_SERIAL_NS16550
	register_device(&quad_uart_serial_device);
#endif
	return 0;
}

console_initcall(eukrea_cpuimx27_console_init);

static int eukrea_cpuimx27_late_init(void)
{
	console_flush();
	register_device(&fec_dev);

	return 0;
}

late_initcall(eukrea_cpuimx27_late_init);

#ifdef CONFIG_NAND_IMX_BOOT
void __bare_init nand_boot(void)
{
	imx_nand_load_image((void *)TEXT_BASE, 256 * 1024);
}
#endif