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/*
* arch/arm/mach-tegra/common.c
*
* Copyright (c) 2013 NVIDIA Corporation. All rights reserved.
* Copyright (C) 2010 Google, Inc.
*
* Author:
* Colin Cross <ccross@android.com>
*
* 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/init.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/of_irq.h>
#include <linux/clk/tegra.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/gic.h>
#include <mach/powergate.h>
#include "board.h"
#include "common.h"
#include "fuse.h"
#include "iomap.h"
#include "pmc.h"
#include "apbio.h"
#include "sleep.h"
#include "pm.h"
#include "reset.h"
/*
* Storage for debug-macro.S's state.
*
* This must be in .data not .bss so that it gets initialized each time the
* kernel is loaded. The data is declared here rather than debug-macro.S so
* that multiple inclusions of debug-macro.S point at the same data.
*/
u32 tegra_uart_config[4] = {
/* Debug UART initialization required */
1,
/* Debug UART physical address */
0,
/* Debug UART virtual address */
0,
/* Scratch space for debug macro */
0,
};
#ifdef CONFIG_OF
static const struct of_device_id tegra_dt_irq_match[] __initconst = {
{ .compatible = "arm,cortex-a15-gic", .data = gic_of_init },
{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init },
{ }
};
void __init tegra_dt_init_irq(void)
{
tegra_clocks_init();
tegra_init_irq();
of_irq_init(tegra_dt_irq_match);
}
#endif
void tegra_assert_system_reset(char mode, const char *cmd)
{
void __iomem *reset = IO_ADDRESS(TEGRA_PMC_BASE + 0);
u32 reg;
reg = readl_relaxed(reset);
reg |= 0x10;
writel_relaxed(reg, reset);
}
static void __init tegra_init_cache(void)
{
#ifdef CONFIG_CACHE_L2X0
int ret;
void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000;
u32 aux_ctrl, cache_type;
cache_type = readl(p + L2X0_CACHE_TYPE);
aux_ctrl = (cache_type & 0x700) << (17-8);
aux_ctrl |= 0x7C400001;
ret = l2x0_of_init(aux_ctrl, 0x8200c3fe);
if (!ret)
l2x0_saved_regs_addr = virt_to_phys(&l2x0_saved_regs);
#endif
}
static void __init tegra_init_early(void)
{
tegra_cpu_reset_handler_init();
tegra_apb_io_init();
tegra_init_fuse();
tegra_init_cache();
tegra_pmc_init();
tegra_powergate_init();
}
#ifdef CONFIG_ARCH_TEGRA_2x_SOC
void __init tegra20_init_early(void)
{
tegra_init_early();
tegra20_hotplug_init();
}
#endif
#ifdef CONFIG_ARCH_TEGRA_3x_SOC
void __init tegra30_init_early(void)
{
tegra_init_early();
tegra30_hotplug_init();
}
#endif
#ifdef CONFIG_ARCH_TEGRA_114_SOC
void __init tegra114_init_early(void)
{
tegra_init_early();
}
#endif
void __init tegra_init_late(void)
{
tegra_powergate_debugfs_init();
}
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