145 lines
3.4 KiB
C
145 lines
3.4 KiB
C
/*
|
|
* 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 <mach/mux.h>
|
|
#include <mach/tc.h>
|
|
|
|
extern int omap1_clk_init(void);
|
|
extern void omap_check_revision(void);
|
|
extern void omap_sram_init(void);
|
|
extern void omapfb_reserve_sdram(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_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();
|
|
omapfb_reserve_sdram();
|
|
}
|
|
|
|
/*
|
|
* 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();
|
|
}
|
|
|