1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/arch/arm/mach-mmp/common.c
4 *
5 * Code common to PXA168 processor lines
6 */
7
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11
12 #include <asm/page.h>
13 #include <asm/mach/map.h>
14 #include <asm/system_misc.h>
15 #include "addr-map.h"
16 #include "cputype.h"
17
18 #include "common.h"
19
20 #define MMP_CHIPID (AXI_VIRT_BASE + 0x82c00)
21
22 unsigned int mmp_chip_id;
23 EXPORT_SYMBOL(mmp_chip_id);
24
25 static struct map_desc standard_io_desc[] __initdata = {
26 {
27 .pfn = __phys_to_pfn(APB_PHYS_BASE),
28 .virtual = (unsigned long)APB_VIRT_BASE,
29 .length = APB_PHYS_SIZE,
30 .type = MT_DEVICE,
31 }, {
32 .pfn = __phys_to_pfn(AXI_PHYS_BASE),
33 .virtual = (unsigned long)AXI_VIRT_BASE,
34 .length = AXI_PHYS_SIZE,
35 .type = MT_DEVICE,
36 },
37 };
38
mmp_map_io(void)39 void __init mmp_map_io(void)
40 {
41 iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
42
43 /* this is early, initialize mmp_chip_id here */
44 mmp_chip_id = __raw_readl(MMP_CHIPID);
45 }
46
mmp_restart(enum reboot_mode mode,const char * cmd)47 void mmp_restart(enum reboot_mode mode, const char *cmd)
48 {
49 soft_restart(0);
50 }
51