2 * OMAP4 specific common source file.
4 * Copyright (C) 2010 Texas Instruments, Inc.
6 * Santosh Shilimkar <santosh.shilimkar@ti.com>
9 * This program is free software,you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/kernel.h>
15 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/memblock.h>
19 #include <linux/of_irq.h>
20 #include <linux/of_platform.h>
21 #include <linux/export.h>
23 #include <asm/hardware/gic.h>
24 #include <asm/hardware/cache-l2x0.h>
25 #include <asm/mach/map.h>
26 #include <asm/memblock.h>
28 #include "../plat-omap/sram.h"
30 #include "omap-wakeupgen.h"
36 #include "prminst44xx.h"
37 #include "omap4-sar-layout.h"
38 #include "omap-secure.h"
40 #ifdef CONFIG_CACHE_L2X0
41 static void __iomem *l2cache_base;
44 static void __iomem *sar_ram_base;
46 #ifdef CONFIG_OMAP4_ERRATA_I688
47 /* Used to implement memory barrier on DRAM path */
48 #define OMAP4_DRAM_BARRIER_VA 0xfe600000
50 void __iomem *dram_sync, *sram_sync;
52 static phys_addr_t paddr;
55 void omap_bus_sync(void)
57 if (dram_sync && sram_sync) {
58 writel_relaxed(readl_relaxed(dram_sync), dram_sync);
59 writel_relaxed(readl_relaxed(sram_sync), sram_sync);
63 EXPORT_SYMBOL(omap_bus_sync);
65 /* Steal one page physical memory for barrier implementation */
66 int __init omap_barrier_reserve_memblock(void)
69 size = ALIGN(PAGE_SIZE, SZ_1M);
70 paddr = arm_memblock_steal(size, SZ_1M);
75 void __init omap_barriers_init(void)
77 struct map_desc dram_io_desc[1];
79 dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA;
80 dram_io_desc[0].pfn = __phys_to_pfn(paddr);
81 dram_io_desc[0].length = size;
82 dram_io_desc[0].type = MT_MEMORY_SO;
83 iotable_init(dram_io_desc, ARRAY_SIZE(dram_io_desc));
84 dram_sync = (void __iomem *) dram_io_desc[0].virtual;
85 sram_sync = (void __iomem *) OMAP4_SRAM_VA;
87 pr_info("OMAP4: Map 0x%08llx to 0x%08lx for dram barrier\n",
88 (long long) paddr, dram_io_desc[0].virtual);
92 void __init omap_barriers_init(void)
96 void __init gic_init_irq(void)
98 void __iomem *omap_irq_base;
99 void __iomem *gic_dist_base_addr;
101 /* Static mapping, never released */
102 gic_dist_base_addr = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K);
103 BUG_ON(!gic_dist_base_addr);
105 /* Static mapping, never released */
106 omap_irq_base = ioremap(OMAP44XX_GIC_CPU_BASE, SZ_512);
107 BUG_ON(!omap_irq_base);
109 omap_wakeupgen_init();
111 gic_init(0, 29, gic_dist_base_addr, omap_irq_base);
114 #ifdef CONFIG_CACHE_L2X0
116 void __iomem *omap4_get_l2cache_base(void)
121 static void omap4_l2x0_disable(void)
123 /* Disable PL310 L2 Cache controller */
124 omap_smc1(0x102, 0x0);
127 static void omap4_l2x0_set_debug(unsigned long val)
129 /* Program PL310 L2 Cache controller debug register */
130 omap_smc1(0x100, val);
133 static int __init omap_l2_cache_init(void)
138 * To avoid code running on other OMAPs in
141 if (!cpu_is_omap44xx())
144 /* Static mapping, never released */
145 l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
146 if (WARN_ON(!l2cache_base))
150 * 16-way associativity, parity disabled
151 * Way size - 32KB (es1.0)
152 * Way size - 64KB (es2.0 +)
154 aux_ctrl = ((1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT) |
156 (0x1 << L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT) |
157 (0x1 << L2X0_AUX_CTRL_NS_INT_CTRL_SHIFT));
159 if (omap_rev() == OMAP4430_REV_ES1_0) {
160 aux_ctrl |= 0x2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT;
162 aux_ctrl |= ((0x3 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
163 (1 << L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT) |
164 (1 << L2X0_AUX_CTRL_DATA_PREFETCH_SHIFT) |
165 (1 << L2X0_AUX_CTRL_INSTR_PREFETCH_SHIFT) |
166 (1 << L2X0_AUX_CTRL_EARLY_BRESP_SHIFT));
168 if (omap_rev() != OMAP4430_REV_ES1_0)
169 omap_smc1(0x109, aux_ctrl);
171 /* Enable PL310 L2 Cache controller */
172 omap_smc1(0x102, 0x1);
174 if (of_have_populated_dt())
175 l2x0_of_init(aux_ctrl, L2X0_AUX_CTRL_MASK);
177 l2x0_init(l2cache_base, aux_ctrl, L2X0_AUX_CTRL_MASK);
180 * Override default outer_cache.disable with a OMAP4
183 outer_cache.disable = omap4_l2x0_disable;
184 outer_cache.set_debug = omap4_l2x0_set_debug;
188 early_initcall(omap_l2_cache_init);
191 void __iomem *omap4_get_sar_ram_base(void)
197 * SAR RAM used to save and restore the HW
198 * context in low power modes
200 static int __init omap4_sar_ram_init(void)
203 * To avoid code running on other OMAPs in
206 if (!cpu_is_omap44xx())
209 /* Static mapping, never released */
210 sar_ram_base = ioremap(OMAP44XX_SAR_RAM_BASE, SZ_16K);
211 if (WARN_ON(!sar_ram_base))
216 early_initcall(omap4_sar_ram_init);
218 static struct of_device_id irq_match[] __initdata = {
219 { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
220 { .compatible = "arm,cortex-a15-gic", .data = gic_of_init, },
224 void __init omap_gic_of_init(void)
226 omap_wakeupgen_init();
227 of_irq_init(irq_match);
230 #if defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
231 static int omap4_twl6030_hsmmc_late_init(struct device *dev)
234 struct platform_device *pdev = container_of(dev,
235 struct platform_device, dev);
236 struct omap_mmc_platform_data *pdata = dev->platform_data;
238 /* Setting MMC1 Card detect Irq */
240 irq = twl6030_mmc_card_detect_config();
242 dev_err(dev, "%s: Error card detect config(%d)\n",
246 pdata->slots[0].card_detect_irq = irq;
247 pdata->slots[0].card_detect = twl6030_mmc_card_detect;
252 static __init void omap4_twl6030_hsmmc_set_late_init(struct device *dev)
254 struct omap_mmc_platform_data *pdata;
256 /* dev can be null if CONFIG_MMC_OMAP_HS is not set */
258 pr_err("Failed %s\n", __func__);
261 pdata = dev->platform_data;
262 pdata->init = omap4_twl6030_hsmmc_late_init;
265 int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
267 struct omap2_hsmmc_info *c;
269 omap_hsmmc_init(controllers);
270 for (c = controllers; c->mmc; c++) {
271 /* pdev can be null if CONFIG_MMC_OMAP_HS is not set */
274 omap4_twl6030_hsmmc_set_late_init(&c->pdev->dev);
280 int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
287 * omap44xx_restart - trigger a software restart of the SoC
288 * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
289 * @cmd: passed from the userspace program rebooting the system (if provided)
291 * Resets the SoC. For @cmd, see the 'reboot' syscall in
292 * kernel/sys.c. No return value.
294 void omap44xx_restart(char mode, const char *cmd)
296 /* XXX Should save 'cmd' into scratchpad for use after reboot */
297 omap4_prminst_global_warm_sw_reset(); /* never returns */