arch/arm/mach-keystone/cmd_mon.c

   1 /*
   2  * K2HK: secure kernel command file
   3  *
   4  * (C) Copyright 2012-2014
   5  *     Texas Instruments Incorporated, <www.ti.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <command.h>
  12 #include <image.h>
  13 #include <mach/mon.h>
  14 asm(".arch_extension sec\n\t");
  15
  16 static int do_mon_install(cmd_tbl_t *cmdtp, int flag, int argc,
  17                           char * const argv[])
  18 {
  19         u32 addr, dpsc_base = 0x1E80000, freq, load_addr, size;
  20         int     rcode = 0;
  21         struct image_header *header;
  22
  23         if (argc < 2)
  24                 return CMD_RET_USAGE;
  25
  26         freq = CONFIG_SYS_HZ_CLOCK;
  27
  28         addr = simple_strtoul(argv[1], NULL, 16);
  29
  30         header = (struct image_header *)addr;
  31
  32         if (image_get_magic(header) != IH_MAGIC) {
  33                 printf("## Please update monitor image\n");
  34                 return -EFAULT;
  35         }
  36
  37         load_addr = image_get_load(header);
  38         size = image_get_data_size(header);
  39         memcpy((void *)load_addr, (void *)(addr + sizeof(struct image_header)),
  40                size);
  41
  42         rcode = mon_install(load_addr, dpsc_base, freq);
  43         printf("## installed monitor @ 0x%x, freq [%d], status %d\n",
  44                load_addr, freq, rcode);
  45
  46         return 0;
  47 }
  48
  49 U_BOOT_CMD(mon_install, 2, 0, do_mon_install,
  50            "Install boot kernel at 'addr'",
  51            ""
  52 );
  53
  54 static void core_spin(void)
  55 {
  56         while (1) {
  57                 asm volatile (
  58                         "dsb\n"
  59                         "isb\n"
  60                         "wfi\n"
  61                 );
  62         }
  63 }
  64
  65 int do_mon_power(cmd_tbl_t *cmdtp, int flag, int argc,
  66                         char * const argv[])
  67 {
  68         int     rcode = 0, core_id, on;
  69         void (*fn)(void);
  70
  71         fn = core_spin;
  72
  73         if (argc < 3)
  74                 return CMD_RET_USAGE;
  75
  76         core_id = simple_strtoul(argv[1], NULL, 16);
  77         on = simple_strtoul(argv[2], NULL, 16);
  78
  79         if (on)
  80                 rcode = mon_power_on(core_id, fn);
  81         else
  82                 rcode = mon_power_off(core_id);
  83
  84         if (on) {
  85                 if (!rcode)
  86                         printf("core %d powered on successfully\n", core_id);
  87                 else
  88                         printf("core %d power on failure\n", core_id);
  89         } else {
  90                 printf("core %d powered off successfully\n", core_id);
  91         }
  92
  93         return 0;
  94 }
  95
  96 U_BOOT_CMD(mon_power, 3, 0, do_mon_power,
  97            "Power On/Off secondary core",
  98            "mon_power <coreid> <oper>\n"
  99            "- coreid (1-3) and oper (1 - ON, 0 - OFF)\n"
 100            ""
 101 );