arch/arm/cpu/armv8/fsl-layerscape/ppa.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2016 NXP Semiconductor, Inc.
   4  */
   5 #include <common.h>
   6 #include <malloc.h>
   7 #include <config.h>
   8 #include <errno.h>
   9 #include <asm/cache.h>
  10 #include <asm/system.h>
  11 #include <asm/types.h>
  12 #include <asm/arch/soc.h>
  13 #ifdef CONFIG_FSL_LSCH3
  14 #include <asm/arch/immap_lsch3.h>
  15 #elif defined(CONFIG_FSL_LSCH2)
  16 #include <asm/arch/immap_lsch2.h>
  17 #endif
  18 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
  19 #include <asm/armv8/sec_firmware.h>
  20 #endif
  21 #ifdef CONFIG_CHAIN_OF_TRUST
  22 #include <fsl_validate.h>
  23 #endif
  24
  25 #ifdef CONFIG_SYS_LS_PPA_FW_IN_NAND
  26 #include <nand.h>
  27 #elif defined(CONFIG_SYS_LS_PPA_FW_IN_MMC)
  28 #include <mmc.h>
  29 #endif
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 int ppa_init(void)
  34 {
  35         unsigned int el = current_el();
  36         void *ppa_fit_addr;
  37         u32 *boot_loc_ptr_l, *boot_loc_ptr_h;
  38         u32 *loadable_l, *loadable_h;
  39         int ret;
  40
  41 #ifdef CONFIG_CHAIN_OF_TRUST
  42         uintptr_t ppa_esbc_hdr = 0;
  43         uintptr_t ppa_img_addr = 0;
  44 #if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
  45         defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
  46         void *ppa_hdr_ddr;
  47 #endif
  48 #endif
  49
  50         /* Skip if running at lower exception level */
  51         if (el < 3) {
  52                 debug("Skipping PPA init, running at EL%d\n", el);
  53                 return 0;
  54         }
  55
  56 #ifdef CONFIG_SYS_LS_PPA_FW_IN_XIP
  57         ppa_fit_addr = (void *)CONFIG_SYS_LS_PPA_FW_ADDR;
  58         debug("%s: PPA image load from XIP\n", __func__);
  59 #ifdef CONFIG_CHAIN_OF_TRUST
  60         ppa_esbc_hdr = CONFIG_SYS_LS_PPA_ESBC_ADDR;
  61 #endif
  62 #else /* !CONFIG_SYS_LS_PPA_FW_IN_XIP */
  63         size_t fw_length, fdt_header_len = sizeof(struct fdt_header);
  64
  65         /* Copy PPA image from MMC/SD/NAND to allocated memory */
  66 #ifdef CONFIG_SYS_LS_PPA_FW_IN_MMC
  67         struct mmc *mmc;
  68         int dev = CONFIG_SYS_MMC_ENV_DEV;
  69         struct fdt_header *fitp;
  70         u32 cnt;
  71         u32 blk;
  72
  73         debug("%s: PPA image load from eMMC/SD\n", __func__);
  74
  75         ret = mmc_initialize(gd->bd);
  76         if (ret) {
  77                 printf("%s: mmc_initialize() failed\n", __func__);
  78                 return ret;
  79         }
  80         mmc = find_mmc_device(dev);
  81         if (!mmc) {
  82                 printf("PPA: MMC cannot find device for PPA firmware\n");
  83                 return -ENODEV;
  84         }
  85
  86         ret = mmc_init(mmc);
  87         if (ret) {
  88                 printf("%s: mmc_init() failed\n", __func__);
  89                 return ret;
  90         }
  91
  92         fitp = malloc(roundup(fdt_header_len, 512));
  93         if (!fitp) {
  94                 printf("PPA: malloc failed for FIT header(size 0x%zx)\n",
  95                        roundup(fdt_header_len, 512));
  96                 return -ENOMEM;
  97         }
  98
  99         blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512;
 100         cnt = DIV_ROUND_UP(fdt_header_len, 512);
 101         debug("%s: MMC read PPA FIT header: dev # %u, block # %u, count %u\n",
 102               __func__, dev, blk, cnt);
 103         ret = blk_dread(mmc_get_blk_desc(mmc), blk, cnt, fitp);
 104         if (ret != cnt) {
 105                 free(fitp);
 106                 printf("MMC/SD read of PPA FIT header at offset 0x%x failed\n",
 107                        CONFIG_SYS_LS_PPA_FW_ADDR);
 108                 return -EIO;
 109         }
 110
 111         ret = fdt_check_header(fitp);
 112         if (ret) {
 113                 free(fitp);
 114                 printf("%s: fdt_check_header() failed\n", __func__);
 115                 return ret;
 116         }
 117
 118 #ifdef CONFIG_CHAIN_OF_TRUST
 119         ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE);
 120         if (!ppa_hdr_ddr) {
 121                 printf("PPA: malloc failed for PPA header\n");
 122                 return -ENOMEM;
 123         }
 124
 125         blk = CONFIG_SYS_LS_PPA_ESBC_ADDR >> 9;
 126         cnt = DIV_ROUND_UP(CONFIG_LS_PPA_ESBC_HDR_SIZE, 512);
 127         ret = blk_dread(mmc_get_blk_desc(mmc), blk, cnt, ppa_hdr_ddr);
 128         if (ret != cnt) {
 129                 free(ppa_hdr_ddr);
 130                 printf("MMC/SD read of PPA header failed\n");
 131                 return -EIO;
 132         }
 133         debug("Read PPA header to 0x%p\n", ppa_hdr_ddr);
 134
 135         ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr;
 136 #endif
 137
 138         fw_length = fdt_totalsize(fitp);
 139         free(fitp);
 140
 141         fw_length = roundup(fw_length, 512);
 142         ppa_fit_addr = malloc(fw_length);
 143         if (!ppa_fit_addr) {
 144                 printf("PPA: malloc failed for PPA image(size 0x%zx)\n",
 145                        fw_length);
 146                 return -ENOMEM;
 147         }
 148
 149         blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512;
 150         cnt = DIV_ROUND_UP(fw_length, 512);
 151         debug("%s: MMC read PPA FIT image: dev # %u, block # %u, count %u\n",
 152               __func__, dev, blk, cnt);
 153         ret = blk_dread(mmc_get_blk_desc(mmc), blk, cnt, ppa_fit_addr);
 154         if (ret != cnt) {
 155                 free(ppa_fit_addr);
 156                 printf("MMC/SD read of PPA FIT header at offset 0x%x failed\n",
 157                        CONFIG_SYS_LS_PPA_FW_ADDR);
 158                 return -EIO;
 159         }
 160
 161 #elif defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
 162         struct fdt_header fit;
 163
 164         debug("%s: PPA image load from NAND\n", __func__);
 165
 166         nand_init();
 167         ret = nand_read(get_nand_dev_by_index(0),
 168                         (loff_t)CONFIG_SYS_LS_PPA_FW_ADDR,
 169                         &fdt_header_len, (u_char *)&fit);
 170         if (ret == -EUCLEAN) {
 171                 printf("NAND read of PPA FIT header at offset 0x%x failed\n",
 172                        CONFIG_SYS_LS_PPA_FW_ADDR);
 173                 return -EIO;
 174         }
 175
 176         ret = fdt_check_header(&fit);
 177         if (ret) {
 178                 printf("%s: fdt_check_header() failed\n", __func__);
 179                 return ret;
 180         }
 181
 182 #ifdef CONFIG_CHAIN_OF_TRUST
 183         ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE);
 184         if (!ppa_hdr_ddr) {
 185                 printf("PPA: malloc failed for PPA header\n");
 186                 return -ENOMEM;
 187         }
 188
 189         fw_length = CONFIG_LS_PPA_ESBC_HDR_SIZE;
 190
 191         ret = nand_read(get_nand_dev_by_index(0),
 192                         (loff_t)CONFIG_SYS_LS_PPA_ESBC_ADDR,
 193                         &fw_length, (u_char *)ppa_hdr_ddr);
 194         if (ret == -EUCLEAN) {
 195                 free(ppa_hdr_ddr);
 196                 printf("NAND read of PPA firmware at offset 0x%x failed\n",
 197                        CONFIG_SYS_LS_PPA_FW_ADDR);
 198                 return -EIO;
 199         }
 200         debug("Read PPA header to 0x%p\n", ppa_hdr_ddr);
 201
 202         ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr;
 203 #endif
 204
 205         fw_length = fdt_totalsize(&fit);
 206
 207         ppa_fit_addr = malloc(fw_length);
 208         if (!ppa_fit_addr) {
 209                 printf("PPA: malloc failed for PPA image(size 0x%zx)\n",
 210                        fw_length);
 211                 return -ENOMEM;
 212         }
 213
 214         ret = nand_read(get_nand_dev_by_index(0),
 215                         (loff_t)CONFIG_SYS_LS_PPA_FW_ADDR,
 216                         &fw_length, (u_char *)ppa_fit_addr);
 217         if (ret == -EUCLEAN) {
 218                 free(ppa_fit_addr);
 219                 printf("NAND read of PPA firmware at offset 0x%x failed\n",
 220                        CONFIG_SYS_LS_PPA_FW_ADDR);
 221                 return -EIO;
 222         }
 223 #else
 224 #error "No CONFIG_SYS_LS_PPA_FW_IN_xxx defined"
 225 #endif
 226
 227 #endif
 228
 229 #ifdef CONFIG_CHAIN_OF_TRUST
 230         ppa_img_addr = (uintptr_t)ppa_fit_addr;
 231         if (fsl_check_boot_mode_secure() != 0) {
 232                 /*
 233                  * In case of failure in validation, fsl_secboot_validate
 234                  * would not return back in case of Production environment
 235                  * with ITS=1. In Development environment (ITS=0 and
 236                  * SB_EN=1), the function may return back in case of
 237                  * non-fatal failures.
 238                  */
 239                 ret = fsl_secboot_validate(ppa_esbc_hdr,
 240                                            PPA_KEY_HASH,
 241                                            &ppa_img_addr);
 242                 if (ret != 0)
 243                         printf("SEC firmware(s) validation failed\n");
 244                 else
 245                         printf("SEC firmware(s) validation Successful\n");
 246         }
 247 #if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
 248         defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
 249         free(ppa_hdr_ddr);
 250 #endif
 251 #endif
 252
 253 #ifdef CONFIG_FSL_LSCH3
 254         struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
 255         boot_loc_ptr_l = &gur->bootlocptrl;
 256         boot_loc_ptr_h = &gur->bootlocptrh;
 257
 258         /* Assign addresses to loadable ptrs */
 259         loadable_l = &gur->scratchrw[4];
 260         loadable_h = &gur->scratchrw[5];
 261 #elif defined(CONFIG_FSL_LSCH2)
 262         struct ccsr_scfg __iomem *scfg = (void *)(CONFIG_SYS_FSL_SCFG_ADDR);
 263         boot_loc_ptr_l = &scfg->scratchrw[1];
 264         boot_loc_ptr_h = &scfg->scratchrw[0];
 265
 266         /* Assign addresses to loadable ptrs */
 267         loadable_l = &scfg->scratchrw[2];
 268         loadable_h = &scfg->scratchrw[3];
 269 #endif
 270
 271         debug("fsl-ppa: boot_loc_ptr_l = 0x%p, boot_loc_ptr_h =0x%p\n",
 272               boot_loc_ptr_l, boot_loc_ptr_h);
 273         ret = sec_firmware_init(ppa_fit_addr, boot_loc_ptr_l, boot_loc_ptr_h,
 274                                 loadable_l, loadable_h);
 275
 276 #if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
 277         defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
 278         free(ppa_fit_addr);
 279 #endif
 280
 281         return ret;
 282 }