1 files changed, 183 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/io.c b/arch/arm/mach-omap1/io.c
new file mode 100644
index 00000000..870886a2
--- /dev/null
+++ b/arch/arm/mach-omap1/io.c
@@ -0,0 +1,183 @@
+/*
+ * linux/arch/arm/mach-omap1/io.c
+ *
+ * OMAP1 I/O mapping code
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <asm/tlb.h>
+#include <asm/mach/map.h>
+#include <plat/mux.h>
+#include <plat/tc.h>
+
+#include "clock.h"
+
+extern void omap_check_revision(void);
+extern void omap_sram_init(void);
+
+/*
+ * The machine specific code may provide the extra mapping besides the
+ * default mapping provided here.
+ */
+static struct map_desc omap_io_desc[] __initdata = {
+	{
+		.virtual	= OMAP1_IO_VIRT,
+		.pfn		= __phys_to_pfn(OMAP1_IO_PHYS),
+		.length		= OMAP1_IO_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+
+#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850)
+static struct map_desc omap7xx_io_desc[] __initdata = {
+	{
+		.virtual	= OMAP7XX_DSP_BASE,
+		.pfn		= __phys_to_pfn(OMAP7XX_DSP_START),
+		.length		= OMAP7XX_DSP_SIZE,
+		.type		= MT_DEVICE
+	}, {
+		.virtual	= OMAP7XX_DSPREG_BASE,
+		.pfn		= __phys_to_pfn(OMAP7XX_DSPREG_START),
+		.length		= OMAP7XX_DSPREG_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+#endif
+
+#ifdef CONFIG_ARCH_OMAP15XX
+static struct map_desc omap1510_io_desc[] __initdata = {
+	{
+		.virtual	= OMAP1510_DSP_BASE,
+		.pfn		= __phys_to_pfn(OMAP1510_DSP_START),
+		.length		= OMAP1510_DSP_SIZE,
+		.type		= MT_DEVICE
+	}, {
+		.virtual	= OMAP1510_DSPREG_BASE,
+		.pfn		= __phys_to_pfn(OMAP1510_DSPREG_START),
+		.length		= OMAP1510_DSPREG_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+#endif
+
+#if defined(CONFIG_ARCH_OMAP16XX)
+static struct map_desc omap16xx_io_desc[] __initdata = {
+	{
+		.virtual	= OMAP16XX_DSP_BASE,
+		.pfn		= __phys_to_pfn(OMAP16XX_DSP_START),
+		.length		= OMAP16XX_DSP_SIZE,
+		.type		= MT_DEVICE
+	}, {
+		.virtual	= OMAP16XX_DSPREG_BASE,
+		.pfn		= __phys_to_pfn(OMAP16XX_DSPREG_START),
+		.length		= OMAP16XX_DSPREG_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+#endif
+
+/*
+ * Maps common IO regions for omap1. This should only get called from
+ * board specific init.
+ */
+void __init omap1_map_common_io(void)
+{
+	iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc));
+
+	/* Normally devicemaps_init() would flush caches and tlb after
+	 * mdesc->map_io(), but we must also do it here because of the CPU
+	 * revision check below.
+	 */
+	local_flush_tlb_all();
+	flush_cache_all();
+
+	/* We want to check CPU revision early for cpu_is_omapxxxx() macros.
+	 * IO space mapping must be initialized before we can do that.
+	 */
+	omap_check_revision();
+
+#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850)
+	if (cpu_is_omap7xx()) {
+		iotable_init(omap7xx_io_desc, ARRAY_SIZE(omap7xx_io_desc));
+	}
+#endif
+#ifdef CONFIG_ARCH_OMAP15XX
+	if (cpu_is_omap15xx()) {
+		iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc));
+	}
+#endif
+#if defined(CONFIG_ARCH_OMAP16XX)
+	if (cpu_is_omap16xx()) {
+		iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc));
+	}
+#endif
+
+	omap_sram_init();
+}
+
+/*
+ * Common low-level hardware init for omap1. This should only get called from
+ * board specific init.
+ */
+void __init omap1_init_common_hw(void)
+{
+	/* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
+	 * on a Posted Write in the TIPB Bridge".
+	 */
+	omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL);
+	omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL);
+
+	/* Must init clocks early to assure that timer interrupt works
+	 */
+	omap1_clk_init();
+
+	omap1_mux_init();
+}
+
+/*
+ * NOTE: Please use ioremap + __raw_read/write where possible instead of these
+ */
+
+u8 omap_readb(u32 pa)
+{
+	return __raw_readb(OMAP1_IO_ADDRESS(pa));
+}
+EXPORT_SYMBOL(omap_readb);
+
+u16 omap_readw(u32 pa)
+{
+	return __raw_readw(OMAP1_IO_ADDRESS(pa));
+}
+EXPORT_SYMBOL(omap_readw);
+
+u32 omap_readl(u32 pa)
+{
+	return __raw_readl(OMAP1_IO_ADDRESS(pa));
+}
+EXPORT_SYMBOL(omap_readl);
+
+void omap_writeb(u8 v, u32 pa)
+{
+	__raw_writeb(v, OMAP1_IO_ADDRESS(pa));
+}
+EXPORT_SYMBOL(omap_writeb);
+
+void omap_writew(u16 v, u32 pa)
+{
+	__raw_writew(v, OMAP1_IO_ADDRESS(pa));
+}
+EXPORT_SYMBOL(omap_writew);
+
+void omap_writel(u32 v, u32 pa)
+{
+	__raw_writel(v, OMAP1_IO_ADDRESS(pa));
+}
+EXPORT_SYMBOL(omap_writel);