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/*
* 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/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/tlb.h>
#include <asm/mach/map.h>
#include <asm/io.h>
#include <asm/arch/mux.h>
#include <asm/arch/tc.h>
extern int omap1_clk_init(void);
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 = IO_VIRT,
.pfn = __phys_to_pfn(IO_PHYS),
.length = IO_SIZE,
.type = MT_DEVICE
}
};
#ifdef CONFIG_ARCH_OMAP730
static struct map_desc omap730_io_desc[] __initdata = {
{
.virtual = OMAP730_DSP_BASE,
.pfn = __phys_to_pfn(OMAP730_DSP_START),
.length = OMAP730_DSP_SIZE,
.type = MT_DEVICE
}, {
.virtual = OMAP730_DSPREG_BASE,
.pfn = __phys_to_pfn(OMAP730_DSPREG_START),
.length = OMAP730_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();
#ifdef CONFIG_ARCH_OMAP730
if (cpu_is_omap730()) {
iotable_init(omap730_io_desc, ARRAY_SIZE(omap730_io_desc));
}
#endif
#ifdef CONFIG_ARCH_OMAP15XX
if (cpu_is_omap1510()) {
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()
{
/* 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();
}
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