board/xilinx/zynqmp/cmds.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * (C) Copyright 2018 Xilinx, Inc.
   4  * Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
   5  */
   6
   7 #include <common.h>
   8 #include <cpu_func.h>
   9 #include <env.h>
  10 #include <malloc.h>
  11 #include <zynqmp_firmware.h>
  12 #include <asm/arch/hardware.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <asm/io.h>
  15
  16 static int do_zynqmp_verify_secure(cmd_tbl_t *cmdtp, int flag, int argc,
  17                                    char * const argv[])
  18 {
  19         u64 src_addr, addr;
  20         u32 len, src_lo, src_hi;
  21         u8 *key_ptr = NULL;
  22         int ret;
  23         u32 key_lo = 0;
  24         u32 key_hi = 0;
  25         u32 ret_payload[PAYLOAD_ARG_CNT];
  26
  27         if (argc < 4)
  28                 return CMD_RET_USAGE;
  29
  30         src_addr = simple_strtoull(argv[2], NULL, 16);
  31         len = simple_strtoul(argv[3], NULL, 16);
  32
  33         if (argc == 5)
  34                 key_ptr = (uint8_t *)(uintptr_t)simple_strtoull(argv[4],
  35                                                                 NULL, 16);
  36
  37         if ((ulong)src_addr != ALIGN((ulong)src_addr,
  38                                      CONFIG_SYS_CACHELINE_SIZE)) {
  39                 printf("Failed: source address not aligned:%lx\n",
  40                        (ulong)src_addr);
  41                 return -EINVAL;
  42         }
  43
  44         src_lo = lower_32_bits((ulong)src_addr);
  45         src_hi = upper_32_bits((ulong)src_addr);
  46         flush_dcache_range((ulong)src_addr, (ulong)(src_addr + len));
  47
  48         if (key_ptr) {
  49                 key_lo = lower_32_bits((ulong)key_ptr);
  50                 key_hi = upper_32_bits((ulong)key_ptr);
  51                 flush_dcache_range((ulong)key_ptr,
  52                                    (ulong)(key_ptr + KEY_PTR_LEN));
  53         }
  54
  55         ret = xilinx_pm_request(PM_SECURE_IMAGE, src_lo, src_hi,
  56                                 key_lo, key_hi, ret_payload);
  57         if (ret) {
  58                 printf("Failed: secure op status:0x%x\n", ret);
  59         } else {
  60                 addr = (u64)ret_payload[1] << 32 | ret_payload[2];
  61                 printf("Verified image at 0x%llx\n", addr);
  62                 env_set_hex("zynqmp_verified_img_addr", addr);
  63         }
  64
  65         return ret;
  66 }
  67
  68 static int do_zynqmp_mmio_read(cmd_tbl_t *cmdtp, int flag, int argc,
  69                                char * const argv[])
  70 {
  71         u32 read_val, addr;
  72         int ret;
  73
  74         if (argc != cmdtp->maxargs)
  75                 return CMD_RET_USAGE;
  76
  77         addr = simple_strtoul(argv[2], NULL, 16);
  78
  79         ret = zynqmp_mmio_read(addr, &read_val);
  80         if (!ret)
  81                 printf("mmio read value at 0x%x = 0x%x\n",
  82                        addr, read_val);
  83         else
  84                 printf("Failed: mmio read\n");
  85
  86         return ret;
  87 }
  88
  89 static int do_zynqmp_mmio_write(cmd_tbl_t *cmdtp, int flag, int argc,
  90                                 char * const argv[])
  91 {
  92         u32 addr, mask, val;
  93         int ret;
  94
  95         if (argc != cmdtp->maxargs)
  96                 return CMD_RET_USAGE;
  97
  98         addr = simple_strtoul(argv[2], NULL, 16);
  99         mask = simple_strtoul(argv[3], NULL, 16);
 100         val = simple_strtoul(argv[4], NULL, 16);
 101
 102         ret = zynqmp_mmio_write(addr, mask, val);
 103         if (ret != 0)
 104                 printf("Failed: mmio write\n");
 105
 106         return ret;
 107 }
 108
 109 #ifdef CONFIG_DEFINE_TCM_OCM_MMAP
 110 static int do_zynqmp_tcm_init(cmd_tbl_t *cmdtp, int flag, int argc,
 111                               char * const argv[])
 112 {
 113         u8 mode;
 114
 115         if (argc != cmdtp->maxargs)
 116                 return CMD_RET_USAGE;
 117
 118         mode = simple_strtoul(argv[2], NULL, 16);
 119         if (mode != TCM_LOCK && mode != TCM_SPLIT) {
 120                 printf("Mode should be either 0(lock)/1(split)\n");
 121                 return CMD_RET_FAILURE;
 122         }
 123
 124         dcache_disable();
 125         tcm_init(mode);
 126         dcache_enable();
 127
 128         return CMD_RET_SUCCESS;
 129 }
 130 #endif
 131
 132 static cmd_tbl_t cmd_zynqmp_sub[] = {
 133         U_BOOT_CMD_MKENT(secure, 5, 0, do_zynqmp_verify_secure, "", ""),
 134         U_BOOT_CMD_MKENT(mmio_read, 3, 0, do_zynqmp_mmio_read, "", ""),
 135         U_BOOT_CMD_MKENT(mmio_write, 5, 0, do_zynqmp_mmio_write, "", ""),
 136 #ifdef CONFIG_DEFINE_TCM_OCM_MMAP
 137         U_BOOT_CMD_MKENT(tcminit, 3, 0, do_zynqmp_tcm_init, "", ""),
 138 #endif
 139 };
 140
 141 /**
 142  * do_zynqmp - Handle the "zynqmp" command-line command
 143  * @cmdtp:      Command data struct pointer
 144  * @flag:       Command flag
 145  * @argc:       Command-line argument count
 146  * @argv:       Array of command-line arguments
 147  *
 148  * Processes the zynqmp specific commands
 149  *
 150  * Return: return 0 on success and CMD_RET_USAGE incase of misuse and error
 151  */
 152 static int do_zynqmp(cmd_tbl_t *cmdtp, int flag, int argc,
 153                      char *const argv[])
 154 {
 155         cmd_tbl_t *c;
 156
 157         if (argc < 2)
 158                 return CMD_RET_USAGE;
 159
 160         c = find_cmd_tbl(argv[1], &cmd_zynqmp_sub[0],
 161                          ARRAY_SIZE(cmd_zynqmp_sub));
 162
 163         if (c)
 164                 return c->cmd(c, flag, argc, argv);
 165         else
 166                 return CMD_RET_USAGE;
 167 }
 168
 169 /***************************************************/
 170 #ifdef CONFIG_SYS_LONGHELP
 171 static char zynqmp_help_text[] =
 172         "secure src len [key_addr] - verifies secure images of $len bytes\n"
 173         "                            long at address $src. Optional key_addr\n"
 174         "                            can be specified if user key needs to\n"
 175         "                            be used for decryption\n"
 176         "zynqmp mmio_read address - read from address\n"
 177         "zynqmp mmio_write address mask value - write value after masking to\n"
 178         "                                       address\n"
 179 #ifdef CONFIG_DEFINE_TCM_OCM_MMAP
 180         "zynqmp tcminit mode - Initialize the TCM with zeros. TCM needs to be\n"
 181         "                      initialized before accessing to avoid ECC\n"
 182         "                      errors. mode specifies in which mode TCM has\n"
 183         "                      to be initialized. Supported modes will be\n"
 184         "                      lock(0)/split(1)\n"
 185 #endif
 186         ;
 187 #endif
 188
 189 U_BOOT_CMD(
 190         zynqmp, 5, 1, do_zynqmp,
 191         "ZynqMP sub-system",
 192         zynqmp_help_text
 193 )