arch/arm/mach-keystone/cmd_mon.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * K2HK: secure kernel command file
   4  *
   5  * (C) Copyright 2012-2014
   6  *     Texas Instruments Incorporated, <www.ti.com>
   7  */
   8
   9 #include <common.h>
  10 #include <command.h>
  11 #include <image.h>
  12 #include <mach/mon.h>
  13 asm(".arch_extension sec\n\t");
  14
  15 static int do_mon_install(struct cmd_tbl *cmdtp, int flag, int argc,
  16                           char *const argv[])
  17 {
  18         u32 addr, dpsc_base = 0x1E80000, freq, load_addr, size;
  19         int     rcode = 0;
  20         struct image_header *header;
  21         u32 ecrypt_bm_addr = 0;
  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         if (argc >=  3)
  43                 ecrypt_bm_addr = simple_strtoul(argv[2], NULL, 16);
  44
  45         rcode = mon_install(load_addr, dpsc_base, freq, ecrypt_bm_addr);
  46         printf("## installed monitor @ 0x%x, freq [%d], status %d\n",
  47                load_addr, freq, rcode);
  48
  49         return 0;
  50 }
  51
  52 U_BOOT_CMD(mon_install, 3, 0, do_mon_install,
  53            "Install boot kernel at 'addr'",
  54            ""
  55 );
  56
  57 static void core_spin(void)
  58 {
  59         while (1) {
  60                 asm volatile (
  61                         "dsb\n"
  62                         "isb\n"
  63                         "wfi\n"
  64                 );
  65         }
  66 }
  67
  68 int do_mon_power(struct cmd_tbl *cmdtp, int flag, int argc,
  69                  char *const argv[])
  70 {
  71         int     rcode = 0, core_id, on;
  72         void (*fn)(void);
  73
  74         fn = core_spin;
  75
  76         if (argc < 3)
  77                 return CMD_RET_USAGE;
  78
  79         core_id = simple_strtoul(argv[1], NULL, 16);
  80         on = simple_strtoul(argv[2], NULL, 16);
  81
  82         if (on)
  83                 rcode = mon_power_on(core_id, fn);
  84         else
  85                 rcode = mon_power_off(core_id);
  86
  87         if (on) {
  88                 if (!rcode)
  89                         printf("core %d powered on successfully\n", core_id);
  90                 else
  91                         printf("core %d power on failure\n", core_id);
  92         } else {
  93                 printf("core %d powered off successfully\n", core_id);
  94         }
  95
  96         return 0;
  97 }
  98
  99 U_BOOT_CMD(mon_power, 3, 0, do_mon_power,
 100            "Power On/Off secondary core",
 101            "mon_power <coreid> <oper>\n"
 102            "- coreid (1-3) and oper (1 - ON, 0 - OFF)\n"
 103            ""
 104 );