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