/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <asm/addrspace.h>
#include <bcm63xx_board.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>
#include <bcm63xx_board.h>
#include <bcm63xx_dev_pci.h>
#include <bcm63xx_dev_uart.h>
#include <bcm63xx_dev_enet.h>
#include <bcm63xx_dev_pcmcia.h>
#include <bcm63xx_dev_usb_ohci.h>
#include <bcm63xx_dev_usb_ehci.h>
#include <board_bcm963xx.h>

#define PFX	"board_livebox: "

static unsigned int mac_addr_used = 0;
static struct board_info board;

/*
 * known 6348 boards
 */
#ifdef CONFIG_BCM63XX_CPU_6348
static struct board_info __initdata board_livebox = {
	.name				= "Livebox",
	.expected_cpu_id		= 0x6348,

	.has_enet0			= 1,
	.has_enet1			= 1,
	.has_pci			= 1,

	.enet0 = {
		.has_phy		= 1,
		.use_internal_phy	= 1,
	},

	.enet1 = {
		.force_speed_100	= 1,
		.force_duplex_full	= 1,
	},

	.has_ohci0			= 1,
	.has_pccard			= 1,
	.has_ehci0			= 1,
};
#endif

/*
 * all boards
 */
static const struct board_info __initdata *bcm963xx_boards[] = {
#ifdef CONFIG_BCM63XX_CPU_6348
	&board_livebox
#endif
};

/*
 * early init callback
 */
void __init board_prom_init(void)
{
	u32 val;

	/* read base address of boot chip select (0) */
	val = bcm_mpi_readl(MPI_CSBASE_REG(0));
	val &= MPI_CSBASE_BASE_MASK;

	/* assume board is a Livebox */
	memcpy(&board, bcm963xx_boards[0], sizeof(board));

	/* setup pin multiplexing depending on board enabled device,
	 * this has to be done this early since PCI init is done
	 * inside arch_initcall */
	val = 0;

	if (board.has_pci) {
		bcm63xx_pci_enabled = 1;
		if (BCMCPU_IS_6348())
			val |= GPIO_MODE_6348_G2_PCI;
	}

	if (board.has_pccard) {
		if (BCMCPU_IS_6348())
			val |= GPIO_MODE_6348_G1_MII_PCCARD;
	}

	if (board.has_enet0 && !board.enet0.use_internal_phy) {
		if (BCMCPU_IS_6348())
			val |= GPIO_MODE_6348_G3_EXT_MII |
				GPIO_MODE_6348_G0_EXT_MII;
	}

	if (board.has_enet1 && !board.enet1.use_internal_phy) {
		if (BCMCPU_IS_6348())
			val |= GPIO_MODE_6348_G3_EXT_MII |
				GPIO_MODE_6348_G0_EXT_MII;
	}

	bcm_gpio_writel(val, GPIO_MODE_REG);
}

/*
 * second stage init callback, good time to panic if we couldn't
 * identify on which board we're running since early printk is working
 */
void __init board_setup(void)
{
	if (!board.name[0])
		panic("unable to detect bcm963xx board");
	printk(KERN_INFO PFX "board name: %s\n", board.name);

	/* make sure we're running on expected cpu */
	if (bcm63xx_get_cpu_id() != board.expected_cpu_id)
		panic("unexpected CPU for bcm963xx board");
}

/*
 * return board name for /proc/cpuinfo
 */
const char *board_get_name(void)
{
	return board.name;
}

/*
 * register & return a new board mac address
 */

static int board_get_mac_address(u8 *mac)
{
	u8 default_mac[ETH_ALEN] = {0x00, 0x07, 0x3A, 0x00, 0x00, 0x00};
	u8 *p;
	int count;

	memcpy(mac, default_mac, ETH_ALEN);

	p = mac + ETH_ALEN - 1;
	count = mac_addr_used;

	while (count--) {
		do {
			(*p)++;
			if (*p != 0)
				break;
			p--;
		} while (p != mac);
	}

	if (p == mac) {
		printk(KERN_ERR PFX "unable to fetch mac address\n");
		return -ENODEV;
	}
        mac_addr_used++;

	return 0;
}

static struct resource mtd_resources[] = {
	{
		.start          = 0,    /* filled at runtime */
		.end            = 0,    /* filled at runtime */
		.flags          = IORESOURCE_MEM,
	}
};

static struct platform_device mtd_dev = {
	.name                   = "bcm963xx-flash",
	.resource               = mtd_resources,
	.num_resources          = ARRAY_SIZE(mtd_resources),
};


/*
 * third stage init callback, register all board devices.
 */
int __init board_register_devices(void)
{
	u32 val;

	bcm63xx_uart_register();

	if (board.has_pccard)
		bcm63xx_pcmcia_register();

	if (board.has_enet0 &&
	    !board_get_mac_address(board.enet0.mac_addr))
		bcm63xx_enet_register(0, &board.enet0);

	if (board.has_enet1 &&
	    !board_get_mac_address(board.enet1.mac_addr))
		bcm63xx_enet_register(1, &board.enet1);

	if (board.has_ohci0)
		bcm63xx_ohci_register();

	if (board.has_ehci0)
		bcm63xx_ehci_register();


	/* read base address of boot chip select (0) */
	val = bcm_mpi_readl(MPI_CSBASE_REG(0));
	val &= MPI_CSBASE_BASE_MASK;
	mtd_resources[0].start = val;
	mtd_resources[0].end = 0x1FFFFFFF;
	
	platform_device_register(&mtd_dev);

	return 0;
}