linux-vybrid_public/arch/arm/mach-tegra/board-harmony.c

/*
 * arch/arm/mach-tegra/board-harmony.c
 *
 * Copyright (C) 2010 Google, Inc.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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 <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/pda_power.h>
#include <linux/io.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/setup.h>

#include <mach/iomap.h>
#include <mach/irqs.h>

#include "board.h"
#include "board-harmony.h"
#include "clock.h"

/* NVidia bootloader tags */
#define ATAG_NVIDIA		0x41000801

#define ATAG_NVIDIA_RM			0x1
#define ATAG_NVIDIA_DISPLAY		0x2
#define ATAG_NVIDIA_FRAMEBUFFER		0x3
#define ATAG_NVIDIA_CHIPSHMOO		0x4
#define ATAG_NVIDIA_CHIPSHMOOPHYS	0x5
#define ATAG_NVIDIA_PRESERVED_MEM_0	0x10000
#define ATAG_NVIDIA_PRESERVED_MEM_N	2
#define ATAG_NVIDIA_FORCE_32		0x7fffffff

struct tag_tegra {
	__u32 bootarg_key;
	__u32 bootarg_len;
	char bootarg[1];
};

static int __init parse_tag_nvidia(const struct tag *tag)
{

	return 0;
}
__tagtable(ATAG_NVIDIA, parse_tag_nvidia);

static struct plat_serial8250_port debug_uart_platform_data[] = {
	{
		.membase	= IO_ADDRESS(TEGRA_UARTD_BASE),
		.mapbase	= TEGRA_UARTD_BASE,
		.irq		= INT_UARTD,
		.flags		= UPF_BOOT_AUTOCONF,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
		.uartclk	= 216000000,
	}, {
		.flags		= 0
	}
};

static struct platform_device debug_uart = {
	.name = "serial8250",
	.id = PLAT8250_DEV_PLATFORM,
	.dev = {
		.platform_data = debug_uart_platform_data,
	},
};

static struct platform_device *harmony_devices[] __initdata = {
	&debug_uart,
};

static void __init tegra_harmony_fixup(struct machine_desc *desc,
	struct tag *tags, char **cmdline, struct meminfo *mi)
{
	mi->nr_banks = 2;
	mi->bank[0].start = PHYS_OFFSET;
	mi->bank[0].size = 448 * SZ_1M;
	mi->bank[1].start = SZ_512M;
	mi->bank[1].size = SZ_512M;
}

static __initdata struct tegra_clk_init_table harmony_clk_init_table[] = {
	/* name		parent		rate		enabled */
	{ "uartd",	"pll_p",	216000000,	true },
	{ NULL,		NULL,		0,		0},
};

static void __init tegra_harmony_init(void)
{
	tegra_common_init();

	tegra_clk_init_from_table(harmony_clk_init_table);

	harmony_pinmux_init();

	platform_add_devices(harmony_devices, ARRAY_SIZE(harmony_devices));
}

MACHINE_START(HARMONY, "harmony")
	.boot_params  = 0x00000100,
	.phys_io        = IO_APB_PHYS,
	.io_pg_offst    = ((IO_APB_VIRT) >> 18) & 0xfffc,
	.fixup		= tegra_harmony_fixup,
	.init_irq       = tegra_init_irq,
	.init_machine   = tegra_harmony_init,
	.map_io         = tegra_map_common_io,
	.timer          = &tegra_timer,
MACHINE_END