Signed-off-by: Sumit Garg sumit.garg@nxp.com Signed-off-by: Udit Agarwal udit.agarwal@nxp.com Tested-by: Vinitha Pillai vinitha.pillai@nxp.com --- arch/arm/cpu/armv8/fsl-layerscape/ppa.c | 67 ++++++++++++++++++++++++++++++++- 1 file changed, 66 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ppa.c b/arch/arm/cpu/armv8/fsl-layerscape/ppa.c index 7f87bb8..d8f1d36 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/ppa.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/ppa.c @@ -39,6 +39,10 @@ int ppa_init(void) #ifdef CONFIG_CHAIN_OF_TRUST uintptr_t ppa_esbc_hdr = CONFIG_SYS_LS_PPA_ESBC_ADDR; uintptr_t ppa_img_addr = 0; +#if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \ + defined(CONFIG_SYS_LS_PPA_FW_IN_NAND) + void *ppa_hdr_ddr; +#endif #endif
#ifdef CONFIG_SYS_LS_PPA_FW_IN_XIP @@ -53,7 +57,7 @@ int ppa_init(void) int dev = CONFIG_SYS_MMC_ENV_DEV; struct fdt_header *fitp; u32 cnt; - u32 blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512; + u32 blk;
debug("%s: PPA image load from eMMC/SD\n", __func__);
@@ -81,6 +85,7 @@ int ppa_init(void) return -ENOMEM; }
+ blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512; cnt = DIV_ROUND_UP(fdt_header_len, 512); debug("%s: MMC read PPA FIT header: dev # %u, block # %u, count %u\n", __func__, dev, blk, cnt); @@ -102,6 +107,29 @@ int ppa_init(void) return ret; }
+#ifdef CONFIG_CHAIN_OF_TRUST + ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE); + if (!ppa_hdr_ddr) { + printf("PPA: malloc failed for PPA header\n"); + return -ENOMEM; + } + + blk = CONFIG_SYS_LS_PPA_ESBC_ADDR >> 9; + cnt = DIV_ROUND_UP(CONFIG_LS_PPA_ESBC_HDR_SIZE, 512); + ret = mmc->block_dev.block_read(&mmc->block_dev, blk, cnt, ppa_hdr_ddr); + if (ret != cnt) { + free(ppa_hdr_ddr); + printf("MMC/SD read of PPA header failed\n"); + return -EIO; + } + debug("Read PPA header to 0x%p\n", ppa_hdr_ddr); + + /* flush cache after read */ + flush_cache((ulong)ppa_hdr_ddr, cnt * 512); + + ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr; +#endif + fw_length = fdt_totalsize(fitp); free(fitp);
@@ -113,6 +141,7 @@ int ppa_init(void) return -ENOMEM; }
+ blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512; cnt = DIV_ROUND_UP(fw_length, 512); debug("%s: MMC read PPA FIT image: dev # %u, block # %u, count %u\n", __func__, dev, blk, cnt); @@ -148,6 +177,31 @@ int ppa_init(void) return ret; }
+#ifdef CONFIG_CHAIN_OF_TRUST + ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE); + if (!ppa_hdr_ddr) { + printf("PPA: malloc failed for PPA header\n"); + return -ENOMEM; + } + + fw_length = CONFIG_LS_PPA_ESBC_HDR_SIZE; + + ret = nand_read(nand_info[0], (loff_t)CONFIG_SYS_LS_PPA_ESBC_ADDR, + &fw_length, (u_char *)ppa_hdr_ddr); + if (ret == -EUCLEAN) { + free(ppa_hdr_ddr); + printf("NAND read of PPA firmware at offset 0x%x failed\n", + CONFIG_SYS_LS_PPA_FW_ADDR); + return -EIO; + } + debug("Read PPA header to 0x%p\n", ppa_hdr_ddr); + + /* flush cache after read */ + flush_cache((ulong)ppa_hdr_ddr, fw_length); + + ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr; +#endif + fw_length = fdt_totalsize(&fit);
ppa_fit_addr = malloc(fw_length); @@ -177,6 +231,13 @@ int ppa_init(void) #ifdef CONFIG_CHAIN_OF_TRUST ppa_img_addr = (uintptr_t)ppa_fit_addr; if (fsl_check_boot_mode_secure() != 0) { + /* + * In case of failure in validation, fsl_secboot_validate + * would not return back in case of Production environment + * with ITS=1. In Development environment (ITS=0 and + * SB_EN=1), the function may return back in case of + * non-fatal failures. + */ ret = fsl_secboot_validate(ppa_esbc_hdr, PPA_KEY_HASH, &ppa_img_addr); @@ -185,6 +246,10 @@ int ppa_init(void) else printf("PPA validation Successful\n"); } +#if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \ + defined(CONFIG_SYS_LS_PPA_FW_IN_NAND) + free(ppa_hdr_ddr); +#endif #endif
#ifdef CONFIG_FSL_LSCH3