Breno Lima | 30e39ac | 2021-03-25 17:30:02 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright 2016 Freescale Semiconductor, Inc. |
| 4 | * Copyright 2017 NXP |
| 5 | * |
| 6 | * These commands enable the use of the CAAM MPPubK-generation and MPSign |
| 7 | * functions in supported i.MX devices. |
| 8 | */ |
| 9 | |
| 10 | #include <asm/byteorder.h> |
| 11 | #include <asm/arch/clock.h> |
| 12 | #include <linux/compiler.h> |
| 13 | #include <command.h> |
| 14 | #include <common.h> |
| 15 | #include <environment.h> |
| 16 | #include <fsl_sec.h> |
| 17 | #include <mapmem.h> |
| 18 | #include <memalign.h> |
| 19 | |
| 20 | DECLARE_GLOBAL_DATA_PTR; |
| 21 | |
| 22 | /** |
| 23 | * do_mfgprot() - Handle the "mfgprot" command-line command |
| 24 | * @cmdtp: Command data struct pointer |
| 25 | * @flag: Command flag |
| 26 | * @argc: Command-line argument count |
| 27 | * @argv: Array of command-line arguments |
| 28 | * |
| 29 | * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| 30 | * on error. |
| 31 | */ |
| 32 | static int do_mfgprot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) |
| 33 | { |
| 34 | u8 *m_ptr, *dgst_ptr, *c_ptr, *d_ptr, *dst_ptr; |
| 35 | char *pubk, *sign, *sel; |
| 36 | int m_size, i, ret; |
| 37 | u32 m_addr; |
| 38 | |
| 39 | pubk = "pubk"; |
| 40 | sign = "sign"; |
| 41 | sel = argv[1]; |
| 42 | |
| 43 | /* Enable HAB clock */ |
| 44 | u32 jr_size = 4; |
Breno Lima | 8c497e1 | 2021-03-25 17:30:03 +0800 | [diff] [blame^] | 45 | u32 out_jr_size = sec_in32(CONFIG_SYS_FSL_JR0_ADDR + |
| 46 | FSL_CAAM_ORSR_JRa_OFFSET); |
Breno Lima | 30e39ac | 2021-03-25 17:30:02 +0800 | [diff] [blame] | 47 | |
| 48 | if (out_jr_size != jr_size) { |
| 49 | hab_caam_clock_enable(1); |
| 50 | sec_init(); |
| 51 | } |
| 52 | |
| 53 | if (strcmp(sel, pubk) == 0) { |
| 54 | dst_ptr = malloc_cache_aligned(FSL_CAAM_MP_PUBK_BYTES); |
| 55 | if (!dst_ptr) |
| 56 | return -ENOMEM; |
| 57 | |
| 58 | ret = gen_mppubk(dst_ptr); |
| 59 | if (ret) { |
| 60 | free(dst_ptr); |
| 61 | return ret; |
| 62 | } |
| 63 | |
| 64 | /* Output results */ |
| 65 | puts("Public key:\n"); |
| 66 | for (i = 0; i < FSL_CAAM_MP_PUBK_BYTES; i++) |
| 67 | printf("%02X", (dst_ptr)[i]); |
| 68 | puts("\n"); |
| 69 | free(dst_ptr); |
| 70 | |
| 71 | } else if (strcmp(sel, sign) == 0) { |
| 72 | if (argc != 4) |
| 73 | return CMD_RET_USAGE; |
| 74 | |
| 75 | m_addr = simple_strtoul(argv[2], NULL, 16); |
| 76 | m_size = simple_strtoul(argv[3], NULL, 10); |
| 77 | m_ptr = map_physmem(m_addr, m_size, MAP_NOCACHE); |
| 78 | if (!m_ptr) |
| 79 | return -ENOMEM; |
| 80 | |
| 81 | dgst_ptr = malloc_cache_aligned(FSL_CAAM_MP_MES_DGST_BYTES); |
| 82 | if (!dgst_ptr) { |
| 83 | ret = -ENOMEM; |
| 84 | goto free_m; |
| 85 | } |
| 86 | |
| 87 | c_ptr = malloc_cache_aligned(FSL_CAAM_MP_PRVK_BYTES); |
| 88 | if (!c_ptr) { |
| 89 | ret = -ENOMEM; |
| 90 | goto free_dgst; |
| 91 | } |
| 92 | |
| 93 | d_ptr = malloc_cache_aligned(FSL_CAAM_MP_PRVK_BYTES); |
| 94 | if (!d_ptr) { |
| 95 | ret = -ENOMEM; |
| 96 | goto free_c; |
| 97 | } |
| 98 | |
| 99 | ret = sign_mppubk(m_ptr, m_size, dgst_ptr, c_ptr, d_ptr); |
| 100 | if (ret) |
| 101 | goto free_d; |
| 102 | |
| 103 | /* Output results */ |
| 104 | puts("Message: "); |
| 105 | for (i = 0; i < m_size; i++) |
| 106 | printf("%02X ", (m_ptr)[i]); |
| 107 | puts("\n"); |
| 108 | |
| 109 | puts("Message Representative Digest(SHA-256):\n"); |
| 110 | for (i = 0; i < FSL_CAAM_MP_MES_DGST_BYTES; i++) |
| 111 | printf("%02X", (dgst_ptr)[i]); |
| 112 | puts("\n"); |
| 113 | |
| 114 | puts("Signature:\n"); |
| 115 | puts("C:\n"); |
| 116 | for (i = 0; i < FSL_CAAM_MP_PRVK_BYTES; i++) |
| 117 | printf("%02X", (c_ptr)[i]); |
| 118 | puts("\n"); |
| 119 | |
| 120 | puts("d:\n"); |
| 121 | for (i = 0; i < FSL_CAAM_MP_PRVK_BYTES; i++) |
| 122 | printf("%02X", (d_ptr)[i]); |
| 123 | puts("\n"); |
| 124 | free_d: |
| 125 | free(d_ptr); |
| 126 | free_c: |
| 127 | free(c_ptr); |
| 128 | free_dgst: |
| 129 | free(dgst_ptr); |
| 130 | free_m: |
| 131 | unmap_sysmem(m_ptr); |
| 132 | |
| 133 | } else { |
| 134 | return CMD_RET_USAGE; |
| 135 | } |
| 136 | return ret; |
| 137 | } |
| 138 | |
| 139 | /***************************************************/ |
| 140 | static char mfgprot_help_text[] = |
| 141 | "Usage:\n" |
| 142 | "Print the public key for Manufacturing Protection\n" |
| 143 | "\tmfgprot pubk\n" |
| 144 | "Generates a Manufacturing Protection signature\n" |
| 145 | "\tmfgprot sign <data_addr> <size>"; |
| 146 | |
| 147 | U_BOOT_CMD( |
| 148 | mfgprot, 4, 1, do_mfgprot, |
| 149 | "Manufacturing Protection\n", |
| 150 | mfgprot_help_text |
| 151 | ); |