mirror of https://gitee.com/openkylin/linux.git
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* linux/arch/arm/mach-mmp/common.c
|
|
*
|
|
* Code common to PXA168 processor lines
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <asm/page.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/system_misc.h>
|
|
#include "addr-map.h"
|
|
#include <linux/soc/mmp/cputype.h>
|
|
|
|
#include "common.h"
|
|
|
|
#define MMP_CHIPID CIU_REG(0x00)
|
|
|
|
unsigned int mmp_chip_id;
|
|
EXPORT_SYMBOL(mmp_chip_id);
|
|
|
|
static struct map_desc standard_io_desc[] __initdata = {
|
|
{
|
|
.pfn = __phys_to_pfn(APB_PHYS_BASE),
|
|
.virtual = (unsigned long)APB_VIRT_BASE,
|
|
.length = APB_PHYS_SIZE,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.pfn = __phys_to_pfn(AXI_PHYS_BASE),
|
|
.virtual = (unsigned long)AXI_VIRT_BASE,
|
|
.length = AXI_PHYS_SIZE,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static struct map_desc mmp2_io_desc[] __initdata = {
|
|
{
|
|
.pfn = __phys_to_pfn(PGU_PHYS_BASE),
|
|
.virtual = (unsigned long)PGU_VIRT_BASE,
|
|
.length = PGU_PHYS_SIZE,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
void __init mmp_map_io(void)
|
|
{
|
|
iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
|
|
|
|
/* this is early, initialize mmp_chip_id here */
|
|
mmp_chip_id = __raw_readl(MMP_CHIPID);
|
|
}
|
|
|
|
void __init mmp2_map_io(void)
|
|
{
|
|
mmp_map_io();
|
|
iotable_init(mmp2_io_desc, ARRAY_SIZE(mmp2_io_desc));
|
|
}
|
|
|
|
void mmp_restart(enum reboot_mode mode, const char *cmd)
|
|
{
|
|
soft_restart(0);
|
|
}
|