1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/arch/arm/mach-mmp/common.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Code common to PXA168 processor lines
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/init.h>
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <asm/page.h>
13*4882a593Smuzhiyun #include <asm/mach/map.h>
14*4882a593Smuzhiyun #include <asm/system_misc.h>
15*4882a593Smuzhiyun #include "addr-map.h"
16*4882a593Smuzhiyun #include <linux/soc/mmp/cputype.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include "common.h"
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun #define MMP_CHIPID CIU_REG(0x00)
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun unsigned int mmp_chip_id;
23*4882a593Smuzhiyun EXPORT_SYMBOL(mmp_chip_id);
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun static struct map_desc standard_io_desc[] __initdata = {
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun .pfn = __phys_to_pfn(APB_PHYS_BASE),
28*4882a593Smuzhiyun .virtual = (unsigned long)APB_VIRT_BASE,
29*4882a593Smuzhiyun .length = APB_PHYS_SIZE,
30*4882a593Smuzhiyun .type = MT_DEVICE,
31*4882a593Smuzhiyun }, {
32*4882a593Smuzhiyun .pfn = __phys_to_pfn(AXI_PHYS_BASE),
33*4882a593Smuzhiyun .virtual = (unsigned long)AXI_VIRT_BASE,
34*4882a593Smuzhiyun .length = AXI_PHYS_SIZE,
35*4882a593Smuzhiyun .type = MT_DEVICE,
36*4882a593Smuzhiyun },
37*4882a593Smuzhiyun };
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun static struct map_desc mmp2_io_desc[] __initdata = {
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun .pfn = __phys_to_pfn(PGU_PHYS_BASE),
42*4882a593Smuzhiyun .virtual = (unsigned long)PGU_VIRT_BASE,
43*4882a593Smuzhiyun .length = PGU_PHYS_SIZE,
44*4882a593Smuzhiyun .type = MT_DEVICE,
45*4882a593Smuzhiyun },
46*4882a593Smuzhiyun };
47*4882a593Smuzhiyun
mmp_map_io(void)48*4882a593Smuzhiyun void __init mmp_map_io(void)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun /* this is early, initialize mmp_chip_id here */
53*4882a593Smuzhiyun mmp_chip_id = __raw_readl(MMP_CHIPID);
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
mmp2_map_io(void)56*4882a593Smuzhiyun void __init mmp2_map_io(void)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun mmp_map_io();
59*4882a593Smuzhiyun iotable_init(mmp2_io_desc, ARRAY_SIZE(mmp2_io_desc));
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
mmp_restart(enum reboot_mode mode,const char * cmd)62*4882a593Smuzhiyun void mmp_restart(enum reboot_mode mode, const char *cmd)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun soft_restart(0);
65*4882a593Smuzhiyun }
66