zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/omap4-common.c b/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/omap4-common.c
new file mode 100644
index 0000000..70de277
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/omap4-common.c
@@ -0,0 +1,209 @@
+/*
+ * OMAP4 specific common source file.
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Author:
+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ *
+ * This program is free software,you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/memblock.h>
+
+#include <asm/hardware/gic.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/map.h>
+#include <asm/memblock.h>
+
+#include <plat/irqs.h>
+#include <plat/sram.h>
+#include <plat/omap-secure.h>
+
+#include <mach/hardware.h>
+#include <mach/omap-wakeupgen.h>
+
+#include "common.h"
+#include "omap4-sar-layout.h"
+#include <linux/export.h>
+
+#ifdef CONFIG_CACHE_L2X0
+static void __iomem *l2cache_base;
+#endif
+
+static void __iomem *sar_ram_base;
+
+#ifdef CONFIG_OMAP4_ERRATA_I688
+/* Used to implement memory barrier on DRAM path */
+#define OMAP4_DRAM_BARRIER_VA 0xfe600000
+
+void __iomem *dram_sync, *sram_sync;
+
+static phys_addr_t paddr;
+static u32 size;
+
+void omap_bus_sync(void)
+{
+ if (dram_sync && sram_sync) {
+ writel_relaxed(readl_relaxed(dram_sync), dram_sync);
+ writel_relaxed(readl_relaxed(sram_sync), sram_sync);
+ isb();
+ }
+}
+EXPORT_SYMBOL(omap_bus_sync);
+
+/* Steal one page physical memory for barrier implementation */
+int __init omap_barrier_reserve_memblock(void)
+{
+
+ size = ALIGN(PAGE_SIZE, SZ_1M);
+ paddr = arm_memblock_steal(size, SZ_1M);
+
+ return 0;
+}
+
+void __init omap_barriers_init(void)
+{
+ struct map_desc dram_io_desc[1];
+
+ dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA;
+ dram_io_desc[0].pfn = __phys_to_pfn(paddr);
+ dram_io_desc[0].length = size;
+ dram_io_desc[0].type = MT_MEMORY_SO;
+ iotable_init(dram_io_desc, ARRAY_SIZE(dram_io_desc));
+ dram_sync = (void __iomem *) dram_io_desc[0].virtual;
+ sram_sync = (void __iomem *) OMAP4_SRAM_VA;
+
+ pr_info("OMAP4: Map 0x%08llx to 0x%08lx for dram barrier\n",
+ (long long) paddr, dram_io_desc[0].virtual);
+
+}
+#else
+void __init omap_barriers_init(void)
+{}
+#endif
+
+void __init gic_init_irq(void)
+{
+ void __iomem *omap_irq_base;
+ void __iomem *gic_dist_base_addr;
+
+ /* Static mapping, never released */
+ gic_dist_base_addr = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K);
+ BUG_ON(!gic_dist_base_addr);
+
+ /* Static mapping, never released */
+ omap_irq_base = ioremap(OMAP44XX_GIC_CPU_BASE, SZ_512);
+ BUG_ON(!omap_irq_base);
+
+ omap_wakeupgen_init();
+
+ gic_init(0, 29, gic_dist_base_addr, omap_irq_base);
+}
+
+#ifdef CONFIG_CACHE_L2X0
+
+void __iomem *omap4_get_l2cache_base(void)
+{
+ return l2cache_base;
+}
+
+static void omap4_l2x0_disable(void)
+{
+ /* Disable PL310 L2 Cache controller */
+ omap_smc1(0x102, 0x0);
+}
+
+static void omap4_l2x0_set_debug(unsigned long val)
+{
+ /* Program PL310 L2 Cache controller debug register */
+ omap_smc1(0x100, val);
+}
+
+static int __init omap_l2_cache_init(void)
+{
+ u32 aux_ctrl = 0;
+
+ /*
+ * To avoid code running on other OMAPs in
+ * multi-omap builds
+ */
+ if (!cpu_is_omap44xx())
+ return -ENODEV;
+
+ /* Static mapping, never released */
+ l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
+ if (WARN_ON(!l2cache_base))
+ return -ENOMEM;
+
+ /*
+ * 16-way associativity, parity disabled
+ * Way size - 32KB (es1.0)
+ * Way size - 64KB (es2.0 +)
+ */
+ aux_ctrl = ((1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT) |
+ (0x1 << 25) |
+ (0x1 << L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT) |
+ (0x1 << L2X0_AUX_CTRL_NS_INT_CTRL_SHIFT));
+
+ if (omap_rev() == OMAP4430_REV_ES1_0) {
+ aux_ctrl |= 0x2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT;
+ } else {
+ aux_ctrl |= ((0x3 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
+ (1 << L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT) |
+ (1 << L2X0_AUX_CTRL_DATA_PREFETCH_SHIFT) |
+ (1 << L2X0_AUX_CTRL_INSTR_PREFETCH_SHIFT) |
+ (1 << L2X0_AUX_CTRL_EARLY_BRESP_SHIFT));
+ }
+ if (omap_rev() != OMAP4430_REV_ES1_0)
+ omap_smc1(0x109, aux_ctrl);
+
+ /* Enable PL310 L2 Cache controller */
+ omap_smc1(0x102, 0x1);
+
+ l2x0_init(l2cache_base, aux_ctrl, L2X0_AUX_CTRL_MASK);
+
+ /*
+ * Override default outer_cache.disable with a OMAP4
+ * specific one
+ */
+ outer_cache.disable = omap4_l2x0_disable;
+ outer_cache.set_debug = omap4_l2x0_set_debug;
+
+ return 0;
+}
+early_initcall(omap_l2_cache_init);
+#endif
+
+void __iomem *omap4_get_sar_ram_base(void)
+{
+ return sar_ram_base;
+}
+
+/*
+ * SAR RAM used to save and restore the HW
+ * context in low power modes
+ */
+static int __init omap4_sar_ram_init(void)
+{
+ /*
+ * To avoid code running on other OMAPs in
+ * multi-omap builds
+ */
+ if (!cpu_is_omap44xx())
+ return -ENOMEM;
+
+ /* Static mapping, never released */
+ sar_ram_base = ioremap(OMAP44XX_SAR_RAM_BASE, SZ_16K);
+ if (WARN_ON(!sar_ram_base))
+ return -ENOMEM;
+
+ return 0;
+}
+early_initcall(omap4_sar_ram_init);