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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

00050 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,
      .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

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