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/sram.h>
29 #include <plat/omap-secure.h>
32 #include "omap-wakeupgen.h"
37 #include "omap4-sar-layout.h"
39 #ifdef CONFIG_CACHE_L2X0
40 static void __iomem *l2cache_base;
43 static void __iomem *sar_ram_base;
45 #ifdef CONFIG_OMAP4_ERRATA_I688
46 /* Used to implement memory barrier on DRAM path */
47 #define OMAP4_DRAM_BARRIER_VA 0xfe600000
49 void __iomem *dram_sync, *sram_sync;
51 static phys_addr_t paddr;
54 void omap_bus_sync(void)
56 if (dram_sync && sram_sync) {
57 writel_relaxed(readl_relaxed(dram_sync), dram_sync);
58 writel_relaxed(readl_relaxed(sram_sync), sram_sync);
62 EXPORT_SYMBOL(omap_bus_sync);
64 /* Steal one page physical memory for barrier implementation */
65 int __init omap_barrier_reserve_memblock(void)
68 size = ALIGN(PAGE_SIZE, SZ_1M);
69 paddr = arm_memblock_steal(size, SZ_1M);
74 void __init omap_barriers_init(void)
76 struct map_desc dram_io_desc[1];
78 dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA;
79 dram_io_desc[0].pfn = __phys_to_pfn(paddr);
80 dram_io_desc[0].length = size;
81 dram_io_desc[0].type = MT_MEMORY_SO;
82 iotable_init(dram_io_desc, ARRAY_SIZE(dram_io_desc));
83 dram_sync = (void __iomem *) dram_io_desc[0].virtual;
84 sram_sync = (void __iomem *) OMAP4_SRAM_VA;
86 pr_info("OMAP4: Map 0x%08llx to 0x%08lx for dram barrier\n",
87 (long long) paddr, dram_io_desc[0].virtual);
91 void __init omap_barriers_init(void)
95 void __init gic_init_irq(void)
97 void __iomem *omap_irq_base;
98 void __iomem *gic_dist_base_addr;
100 /* Static mapping, never released */
101 gic_dist_base_addr = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K);
102 BUG_ON(!gic_dist_base_addr);
104 /* Static mapping, never released */
105 omap_irq_base = ioremap(OMAP44XX_GIC_CPU_BASE, SZ_512);
106 BUG_ON(!omap_irq_base);
108 omap_wakeupgen_init();
110 gic_init(0, 29, gic_dist_base_addr, omap_irq_base);
113 #ifdef CONFIG_CACHE_L2X0
115 void __iomem *omap4_get_l2cache_base(void)
120 static void omap4_l2x0_disable(void)
122 /* Disable PL310 L2 Cache controller */
123 omap_smc1(0x102, 0x0);
126 static void omap4_l2x0_set_debug(unsigned long val)
128 /* Program PL310 L2 Cache controller debug register */
129 omap_smc1(0x100, val);
132 static int __init omap_l2_cache_init(void)
137 * To avoid code running on other OMAPs in
140 if (!cpu_is_omap44xx())
143 /* Static mapping, never released */
144 l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
145 if (WARN_ON(!l2cache_base))
149 * 16-way associativity, parity disabled
150 * Way size - 32KB (es1.0)
151 * Way size - 64KB (es2.0 +)
153 aux_ctrl = ((1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT) |
155 (0x1 << L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT) |
156 (0x1 << L2X0_AUX_CTRL_NS_INT_CTRL_SHIFT));
158 if (omap_rev() == OMAP4430_REV_ES1_0) {
159 aux_ctrl |= 0x2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT;
161 aux_ctrl |= ((0x3 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
162 (1 << L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT) |
163 (1 << L2X0_AUX_CTRL_DATA_PREFETCH_SHIFT) |
164 (1 << L2X0_AUX_CTRL_INSTR_PREFETCH_SHIFT) |
165 (1 << L2X0_AUX_CTRL_EARLY_BRESP_SHIFT));
167 if (omap_rev() != OMAP4430_REV_ES1_0)
168 omap_smc1(0x109, aux_ctrl);
170 /* Enable PL310 L2 Cache controller */
171 omap_smc1(0x102, 0x1);
173 if (of_have_populated_dt())
174 l2x0_of_init(aux_ctrl, L2X0_AUX_CTRL_MASK);
176 l2x0_init(l2cache_base, aux_ctrl, L2X0_AUX_CTRL_MASK);
179 * Override default outer_cache.disable with a OMAP4
182 outer_cache.disable = omap4_l2x0_disable;
183 outer_cache.set_debug = omap4_l2x0_set_debug;
187 early_initcall(omap_l2_cache_init);
190 void __iomem *omap4_get_sar_ram_base(void)
196 * SAR RAM used to save and restore the HW
197 * context in low power modes
199 static int __init omap4_sar_ram_init(void)
202 * To avoid code running on other OMAPs in
205 if (!cpu_is_omap44xx())
208 /* Static mapping, never released */
209 sar_ram_base = ioremap(OMAP44XX_SAR_RAM_BASE, SZ_16K);
210 if (WARN_ON(!sar_ram_base))
215 early_initcall(omap4_sar_ram_init);
217 static struct of_device_id irq_match[] __initdata = {
218 { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
219 { .compatible = "arm,cortex-a15-gic", .data = gic_of_init, },
223 void __init omap_gic_of_init(void)
225 omap_wakeupgen_init();
226 of_irq_init(irq_match);
229 #if defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
230 static int omap4_twl6030_hsmmc_late_init(struct device *dev)
233 struct platform_device *pdev = container_of(dev,
234 struct platform_device, dev);
235 struct omap_mmc_platform_data *pdata = dev->platform_data;
237 /* Setting MMC1 Card detect Irq */
239 irq = twl6030_mmc_card_detect_config();
241 dev_err(dev, "%s: Error card detect config(%d)\n",
245 pdata->slots[0].card_detect_irq = irq;
246 pdata->slots[0].card_detect = twl6030_mmc_card_detect;
251 static __init void omap4_twl6030_hsmmc_set_late_init(struct device *dev)
253 struct omap_mmc_platform_data *pdata;
255 /* dev can be null if CONFIG_MMC_OMAP_HS is not set */
257 pr_err("Failed %s\n", __func__);
260 pdata = dev->platform_data;
261 pdata->init = omap4_twl6030_hsmmc_late_init;
264 int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
266 struct omap2_hsmmc_info *c;
268 omap_hsmmc_init(controllers);
269 for (c = controllers; c->mmc; c++) {
270 /* pdev can be null if CONFIG_MMC_OMAP_HS is not set */
273 omap4_twl6030_hsmmc_set_late_init(&c->pdev->dev);
279 int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)