2 * arch/arm/mach-tegra/common.c
4 * Copyright (c) 2013 NVIDIA Corporation. All rights reserved.
5 * Copyright (C) 2010 Google, Inc.
8 * Colin Cross <ccross@android.com>
10 * This software is licensed under the terms of the GNU General Public
11 * License version 2, as published by the Free Software Foundation, and
12 * may be copied, distributed, and modified under those terms.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
21 #include <linux/init.h>
23 #include <linux/clk.h>
24 #include <linux/delay.h>
26 #include <linux/irqchip.h>
27 #include <linux/clk/tegra.h>
29 #include <asm/hardware/cache-l2x0.h>
43 * Storage for debug-macro.S's state.
45 * This must be in .data not .bss so that it gets initialized each time the
46 * kernel is loaded. The data is declared here rather than debug-macro.S so
47 * that multiple inclusions of debug-macro.S point at the same data.
49 u32 tegra_uart_config[4] = {
50 /* Debug UART initialization required */
52 /* Debug UART physical address */
54 /* Debug UART virtual address */
56 /* Scratch space for debug macro */
61 void __init tegra_dt_init_irq(void)
67 tegra_legacy_irq_syscore_init();
71 void tegra_assert_system_reset(char mode, const char *cmd)
73 void __iomem *reset = IO_ADDRESS(TEGRA_PMC_BASE + 0);
76 reg = readl_relaxed(reset);
78 writel_relaxed(reg, reset);
81 static void __init tegra_init_cache(void)
83 #ifdef CONFIG_CACHE_L2X0
84 static const struct of_device_id pl310_ids[] __initconst = {
85 { .compatible = "arm,pl310-cache", },
89 struct device_node *np;
91 void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000;
92 u32 aux_ctrl, cache_type;
94 np = of_find_matching_node(NULL, pl310_ids);
98 cache_type = readl(p + L2X0_CACHE_TYPE);
99 aux_ctrl = (cache_type & 0x700) << (17-8);
100 aux_ctrl |= 0x7C400001;
102 ret = l2x0_of_init(aux_ctrl, 0x8200c3fe);
104 l2x0_saved_regs_addr = virt_to_phys(&l2x0_saved_regs);
109 void __init tegra_init_early(void)
111 tegra_cpu_reset_handler_init();
115 tegra_powergate_init();
116 tegra_hotplug_init();
119 void __init tegra_init_late(void)
121 tegra_init_suspend();
122 tegra_powergate_debugfs_init();