mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
|
|
* DaVinci I/O mapping code
|
|
*
|
|
* Copyright (C) 2005-2006 Texas Instruments
|
|
*
|
|
* 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/memory.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
#include <mach/clock.h>
|
|
|
|
extern void davinci_check_revision(void);
|
|
|
|
/*
|
|
* The machine specific code may provide the extra mapping besides the
|
|
* default mapping provided here.
|
|
*/
|
|
static struct map_desc davinci_io_desc[] __initdata = {
|
|
{
|
|
.virtual = IO_VIRT,
|
|
.pfn = __phys_to_pfn(IO_PHYS),
|
|
.length = IO_SIZE,
|
|
.type = MT_DEVICE
|
|
},
|
|
};
|
|
|
|
void __init davinci_map_common_io(void)
|
|
{
|
|
iotable_init(davinci_io_desc, ARRAY_SIZE(davinci_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_xxxx() macros.
|
|
* IO space mapping must be initialized before we can do that.
|
|
*/
|
|
davinci_check_revision();
|
|
}
|
|
|
|
void __init davinci_init_common_hw(void)
|
|
{
|
|
davinci_clk_init();
|
|
}
|