// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2021 Alibaba Group Holding Limited. * */ #include #include #include #include #include #include #include #include #include "efuse-api.h" //#define DEBUG_INFO #ifndef ARRAY_SIZE #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) #endif #define EFUSE_LIT_BLOCK_BIT_WIDTH 128 #define EFUSE_BIG_BLOCK_BIT_WIDTH 256 #define EFUSE_BYTES_PER_LIT_BLOCK (EFUSE_LIT_BLOCK_BIT_WIDTH >> 3) #define EFUSE_BYTES_PER_BIG_BLOCK (EFUSE_BIG_BLOCK_BIT_WIDTH >> 3) struct func_efuse_info { const char *func_name; unsigned int block_id; unsigned int addr; /* in byte */ size_t len; /* in byte */ unsigned int shift; /* left-shift bit within a byte*/ unsigned int mask; /* mask within a byte */ }; struct func_efuse_info efuse_func_array[] = { {"UID", 5, 0x50, 20, 0, 0xff}, {"USR_DSP0_JTAG_MODE", 8, 0x86, 1, 0, 0xff}, {"USR_DSP1_JTAG_MODE", 8, 0x87, 1, 0, 0xff}, {"USR_C910T_JTAG_MODE", 8, 0x88, 1, 0, 0xff}, {"USR_C910R_JTAG_MODE", 8, 0x89, 1, 0, 0xff}, {"USR_C906_JTAG_MODE", 8, 0x8a, 1, 0, 0xff}, {"USR_E902_JTAG_MODE", 8, 0x8b, 1, 0, 0xff}, {"USR_CHIP_DBG_MODE", 8, 0x8c, 1, 0, 0xff}, {"USR_DFT_MODE", 8, 0x8d, 1, 0, 0xff}, {"BOOT_OFFSET", 9, 0x90, 4, 0, 0xff}, {"BOOT_INDEX", 9, 0x94, 1, 0, 0xff}, {"BOOT_OFFSET_BAK", 9, 0x95, 4, 0, 0xff}, {"BOOT_INDEX_BAK", 9, 0x99, 1, 0, 0xff}, {"USR_USB_FASTBOOT_DIS", 9, 0x9a, 1, 4, 0x0f}, {"USR_BROM_CCT_DIS", 9, 0x9a, 1, 0, 0x0f}, {"IMAGE_BL2_ENC", 9, 0x9b, 1, 0, 0xff}, {"IMAGE_BL3_ENC", 9, 0x9c, 1, 0, 0xff}, {"IMAGE_BL4_ENC", 9, 0x9d, 1, 0, 0xff}, {"BL1VERSION", 10, 0xa0, 8, 0, 0xff}, {"BL2VERSION", 10, 0xa8, 8, 0, 0xff}, {"SECURE_BOOT", 1, 0x10, 1, 0, 0xff}, {"HASH_DEBUGPK", 25, 0x190, 32, 0, 0xff}, {"BROM_DCACHE_EN", 1, 0x12, 1, 2, 0x3}, {"GMAC0_MAC", 11, 0xb0, 6, 0, 0xff}, {"GMAC1_MAC", 11, 0xb8, 6, 0, 0xff}, {}, }; static const char *efuse_file = "/sys/bus/nvmem/devices/light-efuse0/nvmem"; size_t efuse_read(int fd, void *buf, const char *func_name) { unsigned int offset, mask, shift; size_t len, ret; int i, block; const char *name; off_t pos; for (i = 0; i < ARRAY_SIZE(efuse_func_array); i++) { if (!strcmp(func_name, efuse_func_array[i].func_name)) break; } if (i >= ARRAY_SIZE(efuse_func_array)) { printf("invalid efuse function name(%s)\n", name); return -EINVAL; } block = efuse_func_array[i].block_id; name = efuse_func_array[i].func_name; offset = efuse_func_array[i].addr; len = efuse_func_array[i].len; shift = efuse_func_array[i].shift; mask = efuse_func_array[i].mask; #ifdef DEBUG_INFO printf("[efuse info]: block: %d, name: %s, addr: 0x%x, len: %d mask: 0x%x\n", block, name, offset, (int)len, mask); #endif pos = lseek(fd, offset, SEEK_SET); if (pos < 0) { perror("failed to lseek offset to read"); return -errno; } #ifdef DEBUG_INFO printf("efuse pos = %p\n", pos); #endif if (mask != 0xff) { unsigned char data; unsigned char rd_buf[len]; ret = read(fd, rd_buf, len); if (ret != len) { #ifdef DEBUG_INFO printf("real read len: %d, expected read len: %d\n", ret, len); #endif perror("failed to read"); ret = -errno; goto out; } data = (rd_buf[0] >> shift) & mask; #ifdef DEBUG_INFO printf("data = 0x%x\n", data); #endif memcpy(buf, &data, 1); if (len > 1) { len = len - 1; buf = (unsigned char *)buf + 1; memcpy(buf, &rd_buf[1], len); } } else { /* mask == 0xff */ ret = read(fd, buf, len); if (ret != len) { #ifdef DEBUG_INFO printf("real read len: %d, expected read len: %d\n", ret, len); #endif perror("failed to read"); ret = -errno; } } out: return ret; } size_t efuse_write(int fd, const void *buf, const char *func_name) { unsigned int offset, mask, shift; size_t len, ret; int i, block; const char *name; off_t pos; for (i = 0; i < ARRAY_SIZE(efuse_func_array); i++) { if (!strcmp(func_name, efuse_func_array[i].func_name)) break; } if (i >= ARRAY_SIZE(efuse_func_array)) { printf("invalid efuse function name(%s)\n", name); return -EINVAL; } block = efuse_func_array[i].block_id; name = efuse_func_array[i].func_name; offset = efuse_func_array[i].addr; len = efuse_func_array[i].len; shift = efuse_func_array[i].shift; mask = efuse_func_array[i].mask; #ifdef DEBUG_INFO printf("efuse info: block: %d, name: %s, addr: 0x%x, len: %d, mask: 0x%x\n", block, name, offset, (int)len, mask); #endif pos = lseek(fd, offset, SEEK_SET); if (pos < 0) { perror("failed to lseek offset to read"); return -errno; } #ifdef DEBUG_INFO printf("efuse pos = %p\n", pos); #endif if (mask != 0xff) { unsigned char data; unsigned char wr_buf[len]; memcpy(wr_buf, buf, len); ret = read(fd, &data, 1); if (ret < 0) { perror("failed to read"); ret = -errno; goto out; } data &= ~(mask << shift); data |= (wr_buf[0] & mask) << shift; memcpy(&wr_buf[0], &data, 1); if (lseek(fd, offset, SEEK_SET) == (off_t)-1) { perror("failed to lseek offset to write"); ret = -errno; goto out; } ret = write(fd, wr_buf, len); if (ret != len) { perror("failed to write"); ret = -errno; } } else { /* mask == 0xff */ ret = write(fd, buf, len); if (ret != len) { perror("failed to write"); ret = -errno; } } out: return ret; } /* according to FuseMap_v1.2.1.xlsx */ size_t efuse_block_read(int fd, unsigned char *buf, unsigned int block_num) { unsigned int width, offset, bytes; size_t ret; if (block_num >= 42 && block_num <= 47) width = EFUSE_BIG_BLOCK_BIT_WIDTH; else width = EFUSE_LIT_BLOCK_BIT_WIDTH; if (block_num <= 42) offset = block_num * EFUSE_BYTES_PER_LIT_BLOCK; else if (block_num > 42 && block_num <= 48) offset = 42 * EFUSE_BYTES_PER_LIT_BLOCK + (block_num - 42) * EFUSE_BYTES_PER_BIG_BLOCK; else offset = 42 * EFUSE_BYTES_PER_LIT_BLOCK + 6 * EFUSE_BYTES_PER_BIG_BLOCK + (block_num - 48) * EFUSE_BYTES_PER_LIT_BLOCK; bytes = width / 8; if (lseek(fd, offset, SEEK_SET) == (off_t)-1) { perror("failed to lseek offset to read"); return -errno; } ret = read(fd, buf, bytes); if (ret != bytes) { perror("failed to read"); ret = -errno; } return ret; } /* according to FuseMap_v1.2.1.xlsx */ size_t efuse_block_write(int fd, unsigned char *buf, unsigned int block_num) { unsigned int width, offset, bytes; size_t ret; if (block_num >= 42 && block_num <= 47) width = EFUSE_BIG_BLOCK_BIT_WIDTH; else width = EFUSE_LIT_BLOCK_BIT_WIDTH; if (block_num <= 42) offset = block_num * EFUSE_BYTES_PER_LIT_BLOCK; else if (block_num > 42 && block_num <= 48) offset = 42 * EFUSE_BYTES_PER_LIT_BLOCK + (block_num - 42) * EFUSE_BYTES_PER_BIG_BLOCK; else offset = 42 * EFUSE_BYTES_PER_LIT_BLOCK + 6 * EFUSE_BYTES_PER_BIG_BLOCK + (block_num - 48) * EFUSE_BYTES_PER_LIT_BLOCK; bytes = width / 8; if (lseek(fd, offset, SEEK_SET) == (off_t)-1) { perror("failed to lseek offset to write"); return -errno; } ret = write(fd, buf, bytes); if (ret != bytes) { perror("failed to write"); ret = -errno; } return ret; } /** * csi_efuse_get_chipid() - Get chip id in eFuse * * @chip_id: pointer to the buffer to store chip id * * Return: 0 on success or negative code on failure */ int csi_efuse_get_chipid(void *chip_id) { int ret, fd; assert(chip_id); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); perror("open"); return -errno; } ret = efuse_read(fd, chip_id, "UID"); if (ret < 0) printf("failed to get 'UID' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_user_dbg_mode() - Get debug mode in user area * * @type: Debug type * * @dbg_mode: pointer to the buffer store debug mode * * Return: 0 on success or negative code on failure */ int csi_efuse_get_user_dbg_mode(efuse_dbg_type_t type, efuse_dbg_mode_t *dbg_mode) { int ret, fd; char *mode_name; assert(dbg_mode); if ((type != USR_DSP0_JTAG) && (type != USR_DSP1_JTAG) && (type != USR_C910T_JTAG) && (type != USR_C910R_JTAG) && (type != USR_C906_JTAG) && (type != USR_E902_JTAG) && (type != USR_CHIP_DBG) && (type != USR_DFT)) return -EINVAL; switch (type) { case USR_DSP0_JTAG: mode_name = "USR_DSP0_JTAG_MODE"; break; case USR_DSP1_JTAG: mode_name = "USR_DSP1_JTAG_MODE"; break; case USR_C910T_JTAG: mode_name = "USR_C910T_JTAG_MODE"; break; case USR_C910R_JTAG: mode_name = "USR_C910R_JTAG_MODE"; break; case USR_C906_JTAG: mode_name = "USR_C906_JTAG_MODE"; break; case USR_E902_JTAG: mode_name = "USR_E902_JTAG_MODE"; break; case USR_CHIP_DBG: mode_name = "USR_CHIP_DBG_MODE"; break; case USR_DFT: mode_name = "USR_DFT_MODE"; break; } fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, dbg_mode, mode_name); if (ret < 0) printf("failed to get %s from efuse\n", mode_name); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_user_dbg_mode() - Set debug mode in user area * * @type: Debug type * * @dbg_mode: debug mode * * Return: 0 on success or negative code on failure */ int csi_efuse_set_user_dbg_mode(efuse_dbg_type_t type, efuse_dbg_mode_t dbg_mode) { int ret, fd; char *mode_name; if ((type != USR_DSP0_JTAG) && (type != USR_DSP1_JTAG) && (type != USR_C910T_JTAG) && (type != USR_C910R_JTAG) && (type != USR_C906_JTAG) && (type != USR_E902_JTAG) && (type != USR_CHIP_DBG) && (type != USR_DFT)) return -EINVAL; if ((dbg_mode != DBG_MODE_ENABLE) && (dbg_mode != DBG_MODE_PWD_PROTECT) && (dbg_mode != DBG_MODE_DISABLE)) return -EINVAL; switch (type) { case USR_DSP0_JTAG: mode_name = "USR_DSP0_JTAG_MODE"; break; case USR_DSP1_JTAG: mode_name = "USR_DSP1_JTAG_MODE"; break; case USR_C910T_JTAG: mode_name = "USR_C910T_JTAG_MODE"; break; case USR_C910R_JTAG: mode_name = "USR_C910R_JTAG_MODE"; break; case USR_C906_JTAG: mode_name = "USR_C906_JTAG_MODE"; break; case USR_E902_JTAG: mode_name = "USR_E902_JTAG_MODE"; break; case USR_CHIP_DBG: mode_name = "USR_CHIP_DBG_MODE"; break; case USR_DFT: mode_name = "USR_DFT_MODE"; break; } fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, (unsigned char *)&dbg_mode, mode_name); if (ret < 0) printf("failed to set %s into efuse\n", mode_name); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_boot_offset() - Get BL1's offset in boot media * * @offset: pointer to the buffer to store BL1's offset * * Return: 0 on success or negative code on failure */ int csi_efuse_get_boot_offset(unsigned int *offset) { int ret, fd; assert(offset); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, offset, "BOOT_OFFSET"); if (ret < 0) printf("failed to get 'BOOT_OFFSET' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_boot_offset() - Set BL1's offset in boot media * * @offset: Offset value to be set * * Return: 0 on success or negative code on failure */ int csi_efuse_set_boot_offset(unsigned int offset) { int ret, fd; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &offset, "BOOT_OFFSET"); if (ret < 0) printf("failed to set 'BOOT_OFFSET' into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_boot_index() - Get BL1's index in boot media * * @index: pointer to the buffer to store BL1's index * * Return: 0 on success or negative code on failure */ int csi_efuse_get_boot_index(unsigned char *index) { int ret, fd; assert(index); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, index, "BOOT_INDEX"); if (ret < 0) printf("failed to get 'BOOT_INDEX' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_boot_index() - Set BL1's index in boot media * * @index: index value to be set * * Return: 0 on success or negative code on failure */ int csi_efuse_set_boot_index(const unsigned char index) { int ret, fd; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &index, "BOOT_INDEX"); if (ret < 0) printf("failed to set 'BOOT_INDEX' into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_bak_boot_offset() - Get BL1's offset in boot media * * @offset: pointer to the buffer to store BL1's offset * * Return: 0 on success or negative code on failure */ int csi_efuse_get_bak_boot_offset(unsigned int *offset) { int ret, fd; assert(offset); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, offset, "BOOT_OFFSET_BAK"); if (ret < 0) printf("failed to get 'BOOT_OFFSET_BAK' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_boot_offset() - Set BL1's offset in boot media * * @offset: Offset value to be set * * Return: 0 on success or negative code on failure */ int csi_efuse_set_bak_boot_offset(unsigned int offset) { int ret, fd; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &offset, "BOOT_OFFSET_BAK"); if (ret < 0) printf("failed to set 'BOOT_OFFSET_BAK' into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_bak_boot_index() - Get BL1's index in boot media * * @index: pointer to the buffer to store BL1's index * * Return: 0 on success or negative code on failure */ int csi_efuse_get_bak_boot_index(unsigned char *index) { int ret, fd; assert(index); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, index, "BOOT_INDEX_BAK"); if (ret < 0) printf("failed to get 'BOOT_INDEX_BAK' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_bak_boot_index() - Set BL1's index in boot media * * @index: index value to be set * * Return: 0 on success or negative code on failure */ int csi_efuse_set_bak_boot_index(unsigned char index) { int ret, fd; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &index, "BOOT_INDEX_BAK"); if (ret < 0) printf("failed to set 'BOOT_INDEX_BAK' into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_usr_brom_usb_fastboot_st() - Get bootrom USB fastboots tatus in user area * * @status: pointer to the buffer to store USB fastboot status * * Return: 0 on success or negative code on failure */ int csi_efuse_get_usr_brom_usb_fastboot_st(brom_usbboot_st_t *status) { int ret, fd; unsigned char tempdata; assert(status); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, &tempdata, "USR_USB_FASTBOOT_DIS"); if (ret < 0) printf("failed to get 'USR_USB_FASTBOOT_DIS' from efuse\n"); else ret = 0; if (tempdata == 0xa) *status = BROM_USBBOOT_DIS; else if (tempdata != BROM_USBBOOT_EN) ret = -EINVAL; else *status = BROM_USBBOOT_EN; close(fd); return ret; } /** * csi_efuse_dis_usr_brom_usb_fastboot() - Disable bootrom USB fastboot status in user area * * Return: 0 on success or negative code on failure */ int csi_efuse_dis_usr_brom_usb_fastboot(void) { int ret, fd; unsigned char status = 0xA; /* disable value */ fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &status, "USR_USB_FASTBOOT_DIS"); if (ret < 0) printf("failed to set 'USR_USB_FASTBOOT_DIS' status into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_usr_brom_cct_st() - Get bootrom CCT status in user area * * @status: pointer to the buffer to store CCT * * Return: 0 on success or negative code on failure */ int csi_efuse_get_usr_brom_cct_st(brom_cct_st_t *status) { int ret, fd; unsigned char tempdata; assert(status); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, &tempdata, "USR_BROM_CCT_DIS"); if (ret < 0) printf("failed to get 'USR_BROM_CCT_DIS' from efuse\n"); else ret = 0; if (tempdata == 0xa) *status = BROM_CCT_DIS; else if(tempdata != BROM_CCT_EN) ret = -EINVAL; else *status = BROM_CCT_EN; close(fd); return ret; } /** * csi_efuse_dis_usr_brom_cct() - Disable bootrom CCT status in user area * * Return: 0 on success or negative code on failure */ int csi_efuse_dis_usr_brom_cct(void) { int ret, fd; unsigned char status = 0xA; /* disable value */ fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &status, "USR_BROM_CCT_DIS"); if (ret < 0) printf("failed to set 'USR_BROM_CCT_DIS' status into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_bl2_img_encrypt_st() - Get BL2 image encryption flag * * @encrypt_flag: pointer to the buffer to store BL2 encryption flag * * Return: 0 on success or negative code on failure */ int csi_efuse_get_bl2_img_encrypt_st(img_encrypt_st_t *encrypt_flag) { int ret, fd; unsigned char tempdata; assert(encrypt_flag); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, &tempdata, "IMAGE_BL2_ENC"); if (ret < 0) printf("failed to get 'IMAGE_BL2_ENC' from efuse\n"); else ret = 0; if (tempdata == 0x5a) *encrypt_flag = IMAGE_ENCRYPT_EN; else if (tempdata != IMAGE_ENCRYPT_DIS) ret = -EINVAL; else *encrypt_flag = IMAGE_ENCRYPT_DIS; close(fd); return ret; } /** * csi_efuse_set_bl2_img_encrypt_st() - Set BL2 image encryption flag * * @encrypt_flag: pointer to the buffer to store BL2 encryption flag * * Return: 0 on success or negative code on failure */ int csi_efuse_set_bl2_img_encrypt_st(img_encrypt_st_t encrypt_flag) { int ret, fd; if ((encrypt_flag != IMAGE_ENCRYPT_DIS) && (encrypt_flag != IMAGE_ENCRYPT_EN)) return -EINVAL; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } if (encrypt_flag == IMAGE_ENCRYPT_EN) encrypt_flag = 0x5a; ret = efuse_write(fd, (unsigned char *)&encrypt_flag, "IMAGE_BL2_ENC"); if (ret < 0) printf("failed to get 'IMAGE_BL2_ENC' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_bl3_img_encrypt_st() - Get BL3 image encryption flag * * @encrypt_flag: pointer to the buffer to store BL2 encryption flag * * Return: 0 on success or negative code on failure */ int csi_efuse_get_bl3_img_encrypt_st(img_encrypt_st_t *encrypt_flag) { int ret, fd; unsigned char tempdata; assert(encrypt_flag); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, &tempdata, "IMAGE_BL3_ENC"); if (ret < 0) printf("failed to get 'IMAGE_BL3_ENC' from efuse\n"); else ret = 0; if (tempdata == 0x5a) *encrypt_flag = IMAGE_ENCRYPT_EN; else if (tempdata != IMAGE_ENCRYPT_DIS) ret = -EINVAL; else *encrypt_flag = IMAGE_ENCRYPT_DIS; close(fd); return ret; } /** * csi_efuse_set_bl3_img_encrypt_st() - Set BL3 image encryption flag * * @encrypt_flag: pointer to the buffer to store BL3 encryption flag * * Return: 0 on success or negative code on failure */ int csi_efuse_set_bl3_img_encrypt_st(img_encrypt_st_t encrypt_flag) { int ret, fd; if ((encrypt_flag != IMAGE_ENCRYPT_DIS) && (encrypt_flag != IMAGE_ENCRYPT_EN)) return -EINVAL; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } if (encrypt_flag == IMAGE_ENCRYPT_EN) encrypt_flag = 0x5a; ret = efuse_write(fd, (unsigned char *)&encrypt_flag, "IMAGE_BL3_ENC"); if (ret < 0) printf("failed to get 'IMAGE_BL3_ENC' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_bl4_img_encrypt_st() - Get BL4 image encryption flag * * @encrypt_flag: pointer to the buffer to store BL4 encryption flag * * Return: 0 on success or negative code on failure */ int csi_efuse_get_bl4_img_encrypt_st(img_encrypt_st_t *encrypt_flag) { int ret, fd; unsigned char tempdata; assert(encrypt_flag); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, &tempdata, "IMAGE_BL4_ENC"); if (ret < 0) printf("failed to get 'IMAGE_BL4_ENC' from efuse\n"); else ret = 0; if (tempdata == 0x5a) *encrypt_flag = IMAGE_ENCRYPT_EN; else if (tempdata != IMAGE_ENCRYPT_DIS) ret = -EINVAL; else *encrypt_flag = IMAGE_ENCRYPT_DIS; close(fd); return ret; } /** * csi_efuse_set_bl4_img_encrypt_st() - Set BL4 image encryption flag * * @encrypt_flag: pointer to the buffer to store BL4 encryption flag * * Return: 0 on success or negative code on failure */ int csi_efuse_set_bl4_img_encrypt_st(img_encrypt_st_t encrypt_flag) { int ret, fd; if ((encrypt_flag != IMAGE_ENCRYPT_DIS) && (encrypt_flag != IMAGE_ENCRYPT_EN)) return -EINVAL; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } if (encrypt_flag == IMAGE_ENCRYPT_EN) encrypt_flag = 0x5a; ret = efuse_write(fd, (unsigned char *)&encrypt_flag, "IMAGE_BL4_ENC"); if (ret < 0) printf("failed to get 'IMAGE_BL4_ENC' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_bl1_version() - Get BL1 version * * @version: pointer to the buffer to store BL1's version in eFuse * * Return: 0 on success or negative code on failure */ int csi_efuse_get_bl1_version(unsigned long long *version) { int ret, fd; assert(version); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, version, "BL1VERSION"); if (ret < 0) printf("failed to get 'BL1VERSION' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_bl1_version() - Set BL1 version * * @version: pointer to the buffer to store BL1's version in eFuse * * Return: 0 on success or negative code on failure */ int csi_efuse_set_bl1_version(unsigned long long version) { int ret, fd; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &version, "BL1VERSION"); if (ret < 0) printf("failed to set 'BL1VERSION' into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_bl2_version() - Get BL2 version * * @version: pointer to the buffer to store BL2's version in eFuse * * Return: 0 on success or negative code on failure */ int csi_efuse_get_bl2_version(unsigned long long *version) { int ret, fd; assert(version); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, version, "BL2VERSION"); if (ret < 0) printf("failed to get 'BL2VERSION' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_bl2_version() - Set BL2 version * * @version: pointer to the buffer to store BL2's version in eFuse * * Return: 0 on success or negative code on failure */ int csi_efuse_set_bl2_version(unsigned long long version) { int ret, fd; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_write(fd, &version, "BL2VERSION"); if (ret < 0) printf("failed to set 'BL2VERSION' into efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_secure_boot_st() - Get seucre boot flag * * @sboot_flag: A pointer to the buffer to store secure boot flag * * Return: 0 on success or negative code on failure */ int csi_efuse_get_secure_boot_st(sboot_st_t *sboot_flag) { int ret, fd; unsigned char tempdata; assert(sboot_flag); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, &tempdata, "SECURE_BOOT"); if (ret < 0) printf("failed to get 'SECURE_BOOT' from efuse\n"); else ret = 0; if (tempdata == 0x5a) *sboot_flag = SECURE_BOOT_EN; else if (tempdata != SECURE_BOOT_DIS) ret = -EINVAL; else *sboot_flag = SECURE_BOOT_DIS; close(fd); return ret; } /** * csi_efuse_get_hash_challenge() - Get hash challenge in eFuse * * @hash_resp: pointer to the buffer to store hash response * * Return: 0 on success or negative code on failure */ int csi_efuse_get_hash_challenge(void * hash_resp) { int ret, fd; assert(hash_resp); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_read(fd, hash_resp, "HASH_DEBUGPK"); if (ret < 0) printf("failed to get 'HASH_DEBUGPK' from efuse\n"); else ret = 0; close(fd); return ret; } /** * csi_efuse_get_userdata_group() - Get user data in corresponding eFuse block * * @key: pointer to the buffer to store user data * @block_num: the block number in eFuse * * Return: 0 on success or negative code on failure */ int csi_efuse_get_userdata_group(unsigned char *key, unsigned char block_num) { int ret, fd; assert(key); if (block_num >= 58) return -EINVAL; fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_block_read(fd, key, block_num); if (ret < 0) printf("failed to get block%d data from efuse\n", block_num); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_userdata_group() - Set user data corresponding eFuse block * * @key: pointer to the buffer to store user data * @block_num: the block number in eFuse * * Return: 0 on success or negative code on failure */ int csi_efuse_set_userdata_group(unsigned char *key, unsigned char block_num) { int ret, fd; assert(key); if (block_num > 58) { printf("the block number is out of the scop \n"); return -EINVAL; } fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } ret = efuse_block_write(fd, key, block_num); if (ret < 0) printf("failed to set block%d data into efuse\n", block_num); else ret = 0; close(fd); return ret; } /** * csi_efuse_read() - Read data from eFuse * * @offset: offset address * @data: Pointer to a buffer storing the data read from eFuse * @cnt: Number of bytes need to be read * * Return: number of data items read or error code */ int csi_efuse_read(unsigned int offset, void *data, unsigned int cnt) { int ret, fd; assert(data); fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } if (lseek(fd, offset, SEEK_SET) == (off_t)-1) { perror("failed to lseek offset to read"); close(fd); return -errno; } ret = read(fd, data, cnt); if (ret < 0) { perror("failed to read data from efuse"); ret = -errno; } close(fd); return ret; } /** * csi_efuse_write() - Write data to eFuse * * @offset: offset address * @data: Pointer to a buffer storing the data write to eFuse * @cnt: Number of bytes need to be write * * Return: number of data items write or error code */ int csi_efuse_write(unsigned int offset, void *data, unsigned int cnt) { int ret, fd; assert(data); fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } if (lseek(fd, offset, SEEK_SET) == (off_t)-1) { perror("failed to lseek offset to write"); close(fd); return -errno; } ret = write(fd, data, cnt); if (ret < 0) { perror("failed to write data to efuse"); ret = -errno; } close(fd); return ret; } /** * csi_dbg_enable_c910t_jtag() - Enable C910 TEE core jtag * * Return: 0 on success or negative code on failure */ int csi_dbg_enable_c910t_jtag(void) { } /** * csi_dbg_disable_c910t_jtag() - Disable C910 TEE core jtag * * Return: 0 on success or negative code on failure */ int csi_dbg_disable_c910t_jtag(void) { } /** * csi_efuse_get_gmac_macaddr() - Get gmac0/gmac1 mac address in eFuse * @dev_id: '0' means gmac0, '1' means gmac1 * @mac: the mac address string * * Return: 0: Success others: Failed */ int csi_efuse_get_gmac_macaddr(int dev_id, unsigned char *mac) { int ret, fd; char gmac_name[12] = {}; assert(mac); if ((dev_id != 0) && (dev_id != 1)) return -EINVAL; fd = open(efuse_file, O_RDONLY); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } sprintf(gmac_name, "GMAC%d_MAC", dev_id); ret = efuse_read(fd, mac, gmac_name); if (ret < 0) printf("failed to get %s\n", gmac_name); else ret = 0; close(fd); return ret; } /** * csi_efuse_set_gmac_macaddr() - Set gmac0/gmac1 mac address in eFuse * @dev_id: '0' means gmac0, '1' means gmac1 * @mac: the mac address string * * Return: 0: Success others: Failed */ int csi_efuse_set_gmac_macaddr(int dev_id, unsigned char *mac) { int ret, fd; char gmac_name[12] = {}; assert(mac); if ((dev_id != 0) && (dev_id != 1)) return -EINVAL; fd = open(efuse_file, O_RDWR); if (fd < 0) { printf("failed to open efuse device: %s\n", efuse_file); return -errno; } sprintf(gmac_name, "GMAC%d_MAC", dev_id); ret = efuse_write(fd, mac, gmac_name); if (ret < 0) printf("failed to set '%s' into efuse\n", gmac_name); else ret = 0; close(fd); return ret; } /** * csi_efuse_update_lc_rma() - Upate efuse life cycle RMA * * Return: 0: Success others: Failed */ int csi_efuse_update_lc_rma() { int fd, ret; char d = '1'; const char *dev_path = "/sys/devices/platform/soc/ffff210000.efuse/rma_lc"; fd = open(dev_path, O_WRONLY); if (fd < 0) { printf("failed to open device '%s'\n", dev_path); return -errno; } ret = write(fd, &d, 1); if (ret < 0){ printf("failed to update rma lifecycle\n"); return -errno; } else { ret = 0; } close(fd); return 0; } /** * csi_efuse_update_lc_rma() - Upate efuse life cycle RIP * * Return: 0: Success others: Failed */ int csi_efuse_update_lc_rip() { int fd, ret; char d = '1'; const char *dev_path = "/sys/devices/platform/soc/ffff210000.efuse/rip_lc"; fd = open(dev_path, O_WRONLY); if (fd < 0) { printf("failed to open device '%s'\n", dev_path); return -errno; } ret = write(fd, &d, 1); if (ret < 0){ printf("failed to update rip lifecycle\n"); return -errno; } else { ret = 0; } close(fd); return 0; } int csi_efuse_get_lc_preld(char *lc_name) { int fd, ret; char data[30] = {0}; unsigned int lf = 0; const char *dev_path = "/sys/devices/platform/soc/ffff210000.efuse/lc_preld"; char *str; assert(lc_name); fd = open(dev_path, O_RDONLY); if (fd < 0) { printf("failed to open device '%s' (%d)\n", dev_path, -errno); return -errno; } ret = read(fd, data, 30); if (ret < 0){ printf("failed to read lifecycle from preld area\n"); return -errno; } lf = strtoul(data, NULL, 16); switch (lf) { case 0xC44ACFCF: str = "LC_INIT"; break; case 0xCA410C33: str = "LC_DEV"; break; case 0x548411A6: str = "LC_OEM"; break; case 0xABB00F15: str = "LC_PRO"; break; case 0x67E93416: str = "LC_RMA"; break; case 0x9fCAE0EA: str = "LC_RIP"; break; default: str = "LC_MAX"; return -EINVAL; } strcpy(lc_name, str); close(fd); return 0; } /* * csi_efuse_update_lc(enum life_cycle_e life_cycle) * @life_cycle: the life cycle to set * Return: 0: Success others: Failed */ int csi_efuse_update_lc(enum life_cycle_e life_cycle) { int fd, ret = 0; char *lf; const char *dev_path = "/sys/devices/platform/soc/ffff210000.efuse/update_lc"; fd = open(dev_path, O_WRONLY); if (fd < 0) { printf("failed to open device '%s' (%d)\n", dev_path, -errno); return -errno; } switch (life_cycle) { case LC_DEV: lf = "LC_DEV"; break; case LC_OEM: lf = "LC_OEM"; break; case LC_PRO: lf = "LC_PRO"; break; case LC_RMA: lf = "LC_RMA"; break; case LC_RIP: lf = "LC_RIP"; break; case LC_KILL_KEY1: lf = "LC_KILL_KEY1"; break; case LC_KILL_KEY0: lf = "LC_KILL_KEY0"; break; default: ret = -EINVAL; goto exit; } ret = write(fd, lf, strlen(lf)); if (ret < 0) printf("failed to update efuse life cycle(%d)\n", ret); else ret = 0; exit: close(fd); return ret; }