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