mirror of https://gitee.com/openkylin/linux.git
116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
/*
|
|
* 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/reboot.h>
|
|
#include <linux/irqchip.h>
|
|
#include <linux/clk-provider.h>
|
|
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
|
|
#include "board.h"
|
|
#include "common.h"
|
|
#include "cpuidle.h"
|
|
#include "fuse.h"
|
|
#include "iomap.h"
|
|
#include "irq.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
|
|
void __init tegra_dt_init_irq(void)
|
|
{
|
|
of_clk_init(NULL);
|
|
tegra_pmc_init();
|
|
tegra_init_irq();
|
|
irqchip_init();
|
|
tegra_legacy_irq_syscore_init();
|
|
}
|
|
#endif
|
|
|
|
void tegra_assert_system_reset(enum reboot_mode 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
|
|
|
|
}
|
|
|
|
void __init tegra_init_early(void)
|
|
{
|
|
tegra_cpu_reset_handler_init();
|
|
tegra_apb_io_init();
|
|
tegra_init_fuse();
|
|
tegra_init_cache();
|
|
tegra_powergate_init();
|
|
tegra_hotplug_init();
|
|
}
|
|
|
|
void __init tegra_init_late(void)
|
|
{
|
|
tegra_init_suspend();
|
|
tegra_cpuidle_init();
|
|
tegra_powergate_debugfs_init();
|
|
}
|