1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-mmp/common.c
5 * Code common to PXA168 processor lines
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
13 #include <asm/mach/map.h>
14 #include <asm/system_misc.h>
20 #define MMP_CHIPID (AXI_VIRT_BASE + 0x82c00)
22 unsigned int mmp_chip_id;
23 EXPORT_SYMBOL(mmp_chip_id);
25 static struct map_desc standard_io_desc[] __initdata = {
27 .pfn = __phys_to_pfn(APB_PHYS_BASE),
28 .virtual = (unsigned long)APB_VIRT_BASE,
29 .length = APB_PHYS_SIZE,
32 .pfn = __phys_to_pfn(AXI_PHYS_BASE),
33 .virtual = (unsigned long)AXI_VIRT_BASE,
34 .length = AXI_PHYS_SIZE,
39 void __init mmp_map_io(void)
41 iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
43 /* this is early, initialize mmp_chip_id here */
44 mmp_chip_id = __raw_readl(MMP_CHIPID);
47 void mmp_restart(enum reboot_mode mode, const char *cmd)