root/arch/arm/mach-mmp/common.c

DEFINITIONS

1. mmp_map_io
2. mmp_restart

   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 
  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 
  47 void mmp_restart(enum reboot_mode mode, const char *cmd)
  48 {
  49         soft_restart(0);
  50 }