diff options
Diffstat (limited to 'arch/arm/mach-imx/hab.c')
| -rw-r--r-- | arch/arm/mach-imx/hab.c | 461 |
1 files changed, 273 insertions, 188 deletions
diff --git a/arch/arm/mach-imx/hab.c b/arch/arm/mach-imx/hab.c index 02c7ae4e72..5f197775c1 100644 --- a/arch/arm/mach-imx/hab.c +++ b/arch/arm/mach-imx/hab.c @@ -70,9 +70,40 @@ ((hab_rvt_exit_t *)HAB_RVT_EXIT) \ ) -#define IVT_SIZE 0x20 +static inline void hab_rvt_failsafe_new(void) +{ +} + +#define hab_rvt_failsafe_p \ +( \ + (is_mx6dqp()) ? \ + ((hab_rvt_failsafe_t *)hab_rvt_failsafe_new) : \ + (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ? \ + ((hab_rvt_failsafe_t *)hab_rvt_failsafe_new) : \ + (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ? \ + ((hab_rvt_failsafe_t *)hab_rvt_failsafe_new) : \ + ((hab_rvt_failsafe_t *)HAB_RVT_FAILSAFE) \ +) + +static inline enum hab_status hab_rvt_check_target_new(enum hab_target target, + const void *start, + size_t bytes) +{ + return HAB_SUCCESS; +} + +#define hab_rvt_check_target_p \ +( \ + (is_mx6dqp()) ? \ + ((hab_rvt_check_target_t *)hab_rvt_check_target_new) : \ + (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ? \ + ((hab_rvt_check_target_t *)hab_rvt_check_target_new) : \ + (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ? \ + ((hab_rvt_check_target_t *)hab_rvt_check_target_new) : \ + ((hab_rvt_check_target_t *)HAB_RVT_CHECK_TARGET) \ +) + #define ALIGN_SIZE 0x1000 -#define CSF_PAD_SIZE 0x2000 #define MX6DQ_PU_IROM_MMU_EN_VAR 0x009024a8 #define MX6DLS_PU_IROM_MMU_EN_VAR 0x00901dd0 #define MX6SL_PU_IROM_MMU_EN_VAR 0x00900a18 @@ -80,38 +111,30 @@ (is_soc_type(MXC_SOC_MX7ULP) ? 0x80000000 : \ (is_soc_type(MXC_SOC_MX7) ? 0x2000000 : 0x2)) -/* - * +------------+ 0x0 (DDR_UIMAGE_START) - - * | Header | | - * +------------+ 0x40 | - * | | | - * | | | - * | | | - * | | | - * | Image Data | | - * . | | - * . | > Stuff to be authenticated ----+ - * . | | | - * | | | | - * | | | | - * +------------+ | | - * | | | | - * | Fill Data | | | - * | | | | - * +------------+ Align to ALIGN_SIZE | | - * | IVT | | | - * +------------+ + IVT_SIZE - | - * | | | - * | CSF DATA | <---------------------------------------------------------+ - * | | - * +------------+ - * | | - * | Fill Data | - * | | - * +------------+ + CSF_PAD_SIZE - */ +static int ivt_header_error(const char *err_str, struct ivt_header *ivt_hdr) +{ + printf("%s magic=0x%x length=0x%02x version=0x%x\n", err_str, + ivt_hdr->magic, ivt_hdr->length, ivt_hdr->version); -static bool is_hab_enabled(void); + return 1; +} + +static int verify_ivt_header(struct ivt_header *ivt_hdr) +{ + int result = 0; + + if (ivt_hdr->magic != IVT_HEADER_MAGIC) + result = ivt_header_error("bad magic", ivt_hdr); + + if (be16_to_cpu(ivt_hdr->length) != IVT_TOTAL_LENGTH) + result = ivt_header_error("bad length", ivt_hdr); + + if (ivt_hdr->version != IVT_HEADER_V1 && + ivt_hdr->version != IVT_HEADER_V2) + result = ivt_header_error("bad version", ivt_hdr); + + return result; +} #if !defined(CONFIG_SPL_BUILD) @@ -125,73 +148,81 @@ struct record { bool any_rec_flag; }; -char *rsn_str[] = {"RSN = HAB_RSN_ANY (0x00)\n", - "RSN = HAB_ENG_FAIL (0x30)\n", - "RSN = HAB_INV_ADDRESS (0x22)\n", - "RSN = HAB_INV_ASSERTION (0x0C)\n", - "RSN = HAB_INV_CALL (0x28)\n", - "RSN = HAB_INV_CERTIFICATE (0x21)\n", - "RSN = HAB_INV_COMMAND (0x06)\n", - "RSN = HAB_INV_CSF (0x11)\n", - "RSN = HAB_INV_DCD (0x27)\n", - "RSN = HAB_INV_INDEX (0x0F)\n", - "RSN = HAB_INV_IVT (0x05)\n", - "RSN = HAB_INV_KEY (0x1D)\n", - "RSN = HAB_INV_RETURN (0x1E)\n", - "RSN = HAB_INV_SIGNATURE (0x18)\n", - "RSN = HAB_INV_SIZE (0x17)\n", - "RSN = HAB_MEM_FAIL (0x2E)\n", - "RSN = HAB_OVR_COUNT (0x2B)\n", - "RSN = HAB_OVR_STORAGE (0x2D)\n", - "RSN = HAB_UNS_ALGORITHM (0x12)\n", - "RSN = HAB_UNS_COMMAND (0x03)\n", - "RSN = HAB_UNS_ENGINE (0x0A)\n", - "RSN = HAB_UNS_ITEM (0x24)\n", - "RSN = HAB_UNS_KEY (0x1B)\n", - "RSN = HAB_UNS_PROTOCOL (0x14)\n", - "RSN = HAB_UNS_STATE (0x09)\n", - "RSN = INVALID\n", - NULL}; - -char *sts_str[] = {"STS = HAB_SUCCESS (0xF0)\n", - "STS = HAB_FAILURE (0x33)\n", - "STS = HAB_WARNING (0x69)\n", - "STS = INVALID\n", - NULL}; - -char *eng_str[] = {"ENG = HAB_ENG_ANY (0x00)\n", - "ENG = HAB_ENG_SCC (0x03)\n", - "ENG = HAB_ENG_RTIC (0x05)\n", - "ENG = HAB_ENG_SAHARA (0x06)\n", - "ENG = HAB_ENG_CSU (0x0A)\n", - "ENG = HAB_ENG_SRTC (0x0C)\n", - "ENG = HAB_ENG_DCP (0x1B)\n", - "ENG = HAB_ENG_CAAM (0x1D)\n", - "ENG = HAB_ENG_SNVS (0x1E)\n", - "ENG = HAB_ENG_OCOTP (0x21)\n", - "ENG = HAB_ENG_DTCP (0x22)\n", - "ENG = HAB_ENG_ROM (0x36)\n", - "ENG = HAB_ENG_HDCP (0x24)\n", - "ENG = HAB_ENG_RTL (0x77)\n", - "ENG = HAB_ENG_SW (0xFF)\n", - "ENG = INVALID\n", - NULL}; - -char *ctx_str[] = {"CTX = HAB_CTX_ANY(0x00)\n", - "CTX = HAB_CTX_FAB (0xFF)\n", - "CTX = HAB_CTX_ENTRY (0xE1)\n", - "CTX = HAB_CTX_TARGET (0x33)\n", - "CTX = HAB_CTX_AUTHENTICATE (0x0A)\n", - "CTX = HAB_CTX_DCD (0xDD)\n", - "CTX = HAB_CTX_CSF (0xCF)\n", - "CTX = HAB_CTX_COMMAND (0xC0)\n", - "CTX = HAB_CTX_AUT_DAT (0xDB)\n", - "CTX = HAB_CTX_ASSERT (0xA0)\n", - "CTX = HAB_CTX_EXIT (0xEE)\n", - "CTX = INVALID\n", - NULL}; - -uint8_t hab_statuses[5] = { +static char *rsn_str[] = { + "RSN = HAB_RSN_ANY (0x00)\n", + "RSN = HAB_ENG_FAIL (0x30)\n", + "RSN = HAB_INV_ADDRESS (0x22)\n", + "RSN = HAB_INV_ASSERTION (0x0C)\n", + "RSN = HAB_INV_CALL (0x28)\n", + "RSN = HAB_INV_CERTIFICATE (0x21)\n", + "RSN = HAB_INV_COMMAND (0x06)\n", + "RSN = HAB_INV_CSF (0x11)\n", + "RSN = HAB_INV_DCD (0x27)\n", + "RSN = HAB_INV_INDEX (0x0F)\n", + "RSN = HAB_INV_IVT (0x05)\n", + "RSN = HAB_INV_KEY (0x1D)\n", + "RSN = HAB_INV_RETURN (0x1E)\n", + "RSN = HAB_INV_SIGNATURE (0x18)\n", + "RSN = HAB_INV_SIZE (0x17)\n", + "RSN = HAB_MEM_FAIL (0x2E)\n", + "RSN = HAB_OVR_COUNT (0x2B)\n", + "RSN = HAB_OVR_STORAGE (0x2D)\n", + "RSN = HAB_UNS_ALGORITHM (0x12)\n", + "RSN = HAB_UNS_COMMAND (0x03)\n", + "RSN = HAB_UNS_ENGINE (0x0A)\n", + "RSN = HAB_UNS_ITEM (0x24)\n", + "RSN = HAB_UNS_KEY (0x1B)\n", + "RSN = HAB_UNS_PROTOCOL (0x14)\n", + "RSN = HAB_UNS_STATE (0x09)\n", + "RSN = INVALID\n", + NULL +}; + +static char *sts_str[] = { + "STS = HAB_SUCCESS (0xF0)\n", + "STS = HAB_FAILURE (0x33)\n", + "STS = HAB_WARNING (0x69)\n", + "STS = INVALID\n", + NULL +}; + +static char *eng_str[] = { + "ENG = HAB_ENG_ANY (0x00)\n", + "ENG = HAB_ENG_SCC (0x03)\n", + "ENG = HAB_ENG_RTIC (0x05)\n", + "ENG = HAB_ENG_SAHARA (0x06)\n", + "ENG = HAB_ENG_CSU (0x0A)\n", + "ENG = HAB_ENG_SRTC (0x0C)\n", + "ENG = HAB_ENG_DCP (0x1B)\n", + "ENG = HAB_ENG_CAAM (0x1D)\n", + "ENG = HAB_ENG_SNVS (0x1E)\n", + "ENG = HAB_ENG_OCOTP (0x21)\n", + "ENG = HAB_ENG_DTCP (0x22)\n", + "ENG = HAB_ENG_ROM (0x36)\n", + "ENG = HAB_ENG_HDCP (0x24)\n", + "ENG = HAB_ENG_RTL (0x77)\n", + "ENG = HAB_ENG_SW (0xFF)\n", + "ENG = INVALID\n", + NULL +}; + +static char *ctx_str[] = { + "CTX = HAB_CTX_ANY(0x00)\n", + "CTX = HAB_CTX_FAB (0xFF)\n", + "CTX = HAB_CTX_ENTRY (0xE1)\n", + "CTX = HAB_CTX_TARGET (0x33)\n", + "CTX = HAB_CTX_AUTHENTICATE (0x0A)\n", + "CTX = HAB_CTX_DCD (0xDD)\n", + "CTX = HAB_CTX_CSF (0xCF)\n", + "CTX = HAB_CTX_COMMAND (0xC0)\n", + "CTX = HAB_CTX_AUT_DAT (0xDB)\n", + "CTX = HAB_CTX_ASSERT (0xA0)\n", + "CTX = HAB_CTX_EXIT (0xEE)\n", + "CTX = INVALID\n", + NULL +}; + +static uint8_t hab_statuses[5] = { HAB_STS_ANY, HAB_FAILURE, HAB_WARNING, @@ -199,7 +230,7 @@ uint8_t hab_statuses[5] = { -1 }; -uint8_t hab_reasons[26] = { +static uint8_t hab_reasons[26] = { HAB_RSN_ANY, HAB_ENG_FAIL, HAB_INV_ADDRESS, @@ -228,7 +259,7 @@ uint8_t hab_reasons[26] = { -1 }; -uint8_t hab_contexts[12] = { +static uint8_t hab_contexts[12] = { HAB_CTX_ANY, HAB_CTX_FAB, HAB_CTX_ENTRY, @@ -243,7 +274,7 @@ uint8_t hab_contexts[12] = { -1 }; -uint8_t hab_engines[16] = { +static uint8_t hab_engines[16] = { HAB_ENG_ANY, HAB_ENG_SCC, HAB_ENG_RTIC, @@ -274,7 +305,7 @@ static inline uint8_t get_idx(uint8_t *list, uint8_t tgt) return -1; } -void process_event_record(uint8_t *event_data, size_t bytes) +static void process_event_record(uint8_t *event_data, size_t bytes) { struct record *rec = (struct record *)event_data; @@ -284,7 +315,7 @@ void process_event_record(uint8_t *event_data, size_t bytes) printf("%s", eng_str[get_idx(hab_engines, rec->contents[3])]); } -void display_event(uint8_t *event_data, size_t bytes) +static void display_event(uint8_t *event_data, size_t bytes) { uint32_t i; @@ -303,7 +334,7 @@ void display_event(uint8_t *event_data, size_t bytes) process_event_record(event_data, bytes); } -int get_hab_status(void) +static int get_hab_status(void) { uint32_t index = 0; /* Loop index */ uint8_t event_data[128]; /* Event data buffer */ @@ -316,7 +347,7 @@ int get_hab_status(void) hab_rvt_report_event = hab_rvt_report_event_p; hab_rvt_report_status = hab_rvt_report_status_p; - if (is_hab_enabled()) + if (imx_hab_is_enabled()) puts("\nSecure boot enabled\n"); else puts("\nSecure boot disabled\n"); @@ -348,7 +379,8 @@ int get_hab_status(void) return 0; } -int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +static int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) { if ((argc != 1)) { cmd_usage(cmdtp); @@ -361,22 +393,43 @@ int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } static int do_authenticate_image(cmd_tbl_t *cmdtp, int flag, int argc, - char * const argv[]) + char * const argv[]) { - ulong addr, ivt_offset; + ulong addr, length, ivt_offset; int rcode = 0; - if (argc < 3) + if (argc < 4) return CMD_RET_USAGE; addr = simple_strtoul(argv[1], NULL, 16); - ivt_offset = simple_strtoul(argv[2], NULL, 16); + length = simple_strtoul(argv[2], NULL, 16); + ivt_offset = simple_strtoul(argv[3], NULL, 16); - rcode = authenticate_image(addr, ivt_offset); + rcode = imx_hab_authenticate_image(addr, length, ivt_offset); + if (rcode == 0) + rcode = CMD_RET_SUCCESS; + else + rcode = CMD_RET_FAILURE; return rcode; } +static int do_hab_failsafe(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + hab_rvt_failsafe_t *hab_rvt_failsafe; + + if (argc != 1) { + cmd_usage(cmdtp); + return 1; + } + + hab_rvt_failsafe = hab_rvt_failsafe_p; + hab_rvt_failsafe(); + + return 0; +} + U_BOOT_CMD( hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status, "display HAB status", @@ -384,17 +437,23 @@ U_BOOT_CMD( ); U_BOOT_CMD( - hab_auth_img, 3, 0, do_authenticate_image, + hab_auth_img, 4, 0, do_authenticate_image, "authenticate image via HAB", - "addr ivt_offset\n" + "addr length ivt_offset\n" "addr - image hex address\n" + "length - image hex length\n" "ivt_offset - hex offset of IVT in the image" ); +U_BOOT_CMD( + hab_failsafe, CONFIG_SYS_MAXARGS, 1, do_hab_failsafe, + "run BootROM failsafe routine", + "" + ); #endif /* !defined(CONFIG_SPL_BUILD) */ -static bool is_hab_enabled(void) +bool imx_hab_is_enabled(void) { struct imx_sec_config_fuse_t *fuse = (struct imx_sec_config_fuse_t *)&imx_sec_config_fuse; @@ -410,107 +469,133 @@ static bool is_hab_enabled(void) return (reg & IS_HAB_ENABLED_BIT) == IS_HAB_ENABLED_BIT; } -uint32_t authenticate_image(uint32_t ddr_start, uint32_t image_size) +int imx_hab_authenticate_image(uint32_t ddr_start, uint32_t image_size, + uint32_t ivt_offset) { uint32_t load_addr = 0; size_t bytes; - ptrdiff_t ivt_offset = 0; - int result = 0; + uint32_t ivt_addr = 0; + int result = 1; ulong start; hab_rvt_authenticate_image_t *hab_rvt_authenticate_image; hab_rvt_entry_t *hab_rvt_entry; hab_rvt_exit_t *hab_rvt_exit; + hab_rvt_check_target_t *hab_rvt_check_target; + struct ivt *ivt; + struct ivt_header *ivt_hdr; + enum hab_status status; hab_rvt_authenticate_image = hab_rvt_authenticate_image_p; hab_rvt_entry = hab_rvt_entry_p; hab_rvt_exit = hab_rvt_exit_p; + hab_rvt_check_target = hab_rvt_check_target_p; + + if (!imx_hab_is_enabled()) { + puts("hab fuse not enabled\n"); + return 0; + } + + printf("\nAuthenticate image from DDR location 0x%x...\n", + ddr_start); - if (is_hab_enabled()) { - printf("\nAuthenticate image from DDR location 0x%x...\n", - ddr_start); + hab_caam_clock_enable(1); - hab_caam_clock_enable(1); + /* Calculate IVT address header */ + ivt_addr = ddr_start + ivt_offset; + ivt = (struct ivt *)ivt_addr; + ivt_hdr = &ivt->hdr; - if (hab_rvt_entry() == HAB_SUCCESS) { - /* If not already aligned, Align to ALIGN_SIZE */ - ivt_offset = (image_size + ALIGN_SIZE - 1) & - ~(ALIGN_SIZE - 1); + /* Verify IVT header bugging out on error */ + if (verify_ivt_header(ivt_hdr)) + goto hab_caam_clock_disable; + + /* Verify IVT body */ + if (ivt->self != ivt_addr) { + printf("ivt->self 0x%08x pointer is 0x%08x\n", + ivt->self, ivt_addr); + goto hab_caam_clock_disable; + } - start = ddr_start; - bytes = ivt_offset + IVT_SIZE + CSF_PAD_SIZE; + start = ddr_start; + bytes = image_size; + + if (hab_rvt_entry() != HAB_SUCCESS) { + puts("hab entry function fail\n"); + goto hab_exit_failure_print_status; + } + + status = hab_rvt_check_target(HAB_TGT_MEMORY, (void *)ddr_start, bytes); + if (status != HAB_SUCCESS) { + printf("HAB check target 0x%08x-0x%08x fail\n", + ddr_start, ddr_start + bytes); + goto hab_exit_failure_print_status; + } #ifdef DEBUG - printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n", - ivt_offset, ddr_start + ivt_offset); - puts("Dumping IVT\n"); - print_buffer(ddr_start + ivt_offset, - (void *)(ddr_start + ivt_offset), - 4, 0x8, 0); - - puts("Dumping CSF Header\n"); - print_buffer(ddr_start + ivt_offset+IVT_SIZE, - (void *)(ddr_start + ivt_offset+IVT_SIZE), - 4, 0x10, 0); + printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n", ivt_offset, ivt_addr); + printf("ivt entry = 0x%08x, dcd = 0x%08x, csf = 0x%08x\n", ivt->entry, + ivt->dcd, ivt->csf); + puts("Dumping IVT\n"); + print_buffer(ivt_addr, (void *)(ivt_addr), 4, 0x8, 0); + + puts("Dumping CSF Header\n"); + print_buffer(ivt->csf, (void *)(ivt->csf), 4, 0x10, 0); #if !defined(CONFIG_SPL_BUILD) - get_hab_status(); + get_hab_status(); #endif - puts("\nCalling authenticate_image in ROM\n"); - printf("\tivt_offset = 0x%x\n", ivt_offset); - printf("\tstart = 0x%08lx\n", start); - printf("\tbytes = 0x%x\n", bytes); + puts("\nCalling authenticate_image in ROM\n"); + printf("\tivt_offset = 0x%x\n", ivt_offset); + printf("\tstart = 0x%08lx\n", start); + printf("\tbytes = 0x%x\n", bytes); #endif + /* + * If the MMU is enabled, we have to notify the ROM + * code, or it won't flush the caches when needed. + * This is done, by setting the "pu_irom_mmu_enabled" + * word to 1. You can find its address by looking in + * the ROM map. This is critical for + * authenticate_image(). If MMU is enabled, without + * setting this bit, authentication will fail and may + * crash. + */ + /* Check MMU enabled */ + if (is_soc_type(MXC_SOC_MX6) && get_cr() & CR_M) { + if (is_mx6dq()) { /* - * If the MMU is enabled, we have to notify the ROM - * code, or it won't flush the caches when needed. - * This is done, by setting the "pu_irom_mmu_enabled" - * word to 1. You can find its address by looking in - * the ROM map. This is critical for - * authenticate_image(). If MMU is enabled, without - * setting this bit, authentication will fail and may - * crash. + * This won't work on Rev 1.0.0 of + * i.MX6Q/D, since their ROM doesn't + * do cache flushes. don't think any + * exist, so we ignore them. */ - /* Check MMU enabled */ - if (is_soc_type(MXC_SOC_MX6) && get_cr() & CR_M) { - if (is_mx6dq()) { - /* - * This won't work on Rev 1.0.0 of - * i.MX6Q/D, since their ROM doesn't - * do cache flushes. don't think any - * exist, so we ignore them. - */ - if (!is_mx6dqp()) - writel(1, MX6DQ_PU_IROM_MMU_EN_VAR); - } else if (is_mx6sdl()) { - writel(1, MX6DLS_PU_IROM_MMU_EN_VAR); - } else if (is_mx6sl()) { - writel(1, MX6SL_PU_IROM_MMU_EN_VAR); - } - } - - load_addr = (uint32_t)hab_rvt_authenticate_image( - HAB_CID_UBOOT, - ivt_offset, (void **)&start, - (size_t *)&bytes, NULL); - if (hab_rvt_exit() != HAB_SUCCESS) { - puts("hab exit function fail\n"); - load_addr = 0; - } - } else { - puts("hab entry function fail\n"); + if (!is_mx6dqp()) + writel(1, MX6DQ_PU_IROM_MMU_EN_VAR); + } else if (is_mx6sdl()) { + writel(1, MX6DLS_PU_IROM_MMU_EN_VAR); + } else if (is_mx6sl()) { + writel(1, MX6SL_PU_IROM_MMU_EN_VAR); } + } - hab_caam_clock_enable(0); + load_addr = (uint32_t)hab_rvt_authenticate_image( + HAB_CID_UBOOT, + ivt_offset, (void **)&start, + (size_t *)&bytes, NULL); + if (hab_rvt_exit() != HAB_SUCCESS) { + puts("hab exit function fail\n"); + load_addr = 0; + } +hab_exit_failure_print_status: #if !defined(CONFIG_SPL_BUILD) - get_hab_status(); + get_hab_status(); #endif - } else { - puts("hab fuse not enabled\n"); - } - if ((!is_hab_enabled()) || (load_addr != 0)) - result = 1; +hab_caam_clock_disable: + hab_caam_clock_enable(0); + + if (load_addr != 0) + result = 0; return result; } |