Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2014-2016 Freescale Semiconductor, Inc. * Copyright 2017 NXP */ #include <errno.h> #include <fsl_sec.h> #include <memalign.h> #include "desc.h" #include "desc_constr.h" #include "jobdesc.h" #include "jr.h" /* Size of MFG descriptor */ #define MFG_PUBK_DSC_WORDS 4 #define MFG_SIGN_DSC_WORDS 8 static void mfg_build_sign_dsc(u32 *dsc_ptr, const u8 *m, int size, u8 *dgst, u8 *c, u8 *d) { u32 *dsc = dsc_ptr; struct pdb_mp_sign *pdb; init_job_desc_pdb(dsc, 0, sizeof(struct pdb_mp_sign)); pdb = (struct pdb_mp_sign *)desc_pdb(dsc); /* Curve */ pdb->pdb_hdr = (PDB_MP_CSEL_P256); /* Message Pointer */ pdb_add_ptr(&pdb->dma_addr_msg, virt_to_phys((void *)m)); /* mes-resp Pointer */ pdb_add_ptr(&pdb->dma_addr_hash, virt_to_phys((void *)dgst)); /* C Pointer */ pdb_add_ptr(&pdb->dma_addr_c_sig, virt_to_phys((void *)c)); /* d Pointer */ pdb_add_ptr(&pdb->dma_addr_d_sig, virt_to_phys((void *)d)); /* Message Size */ pdb->img_size = size; /* MP PubK generate key command */ append_cmd(dsc, (CMD_OPERATION | OP_TYPE_DECAP_PROTOCOL | OP_PCLID_MP_SIGN)); } static void mfg_build_pubk_dsc(u32 *dsc_ptr, u8 *dst) { u32 *dsc = dsc_ptr; struct pdb_mp_pub_k *pdb; init_job_desc_pdb(dsc, 0, sizeof(struct pdb_mp_pub_k)); pdb = (struct pdb_mp_pub_k *)desc_pdb(dsc); /* Curve */ pdb->pdb_hdr = (PDB_MP_CSEL_P256); /* Message Pointer */ pdb_add_ptr(&pdb->dma_pkey, virt_to_phys((void *)dst)); /* MP Sign key command */ append_cmd(dsc, (CMD_OPERATION | OP_TYPE_DECAP_PROTOCOL | OP_PCLID_MP_PUB_KEY)); } int gen_mppubk(u8 *dst) { int size, ret; u32 *dsc; /* Job Descriptor initialization */ dsc = memalign(ARCH_DMA_MINALIGN, sizeof(uint32_t) * MFG_PUBK_DSC_WORDS); if (!dsc) { debug("Not enough memory for descriptor allocation\n"); return -ENOMEM; } mfg_build_pubk_dsc(dsc, dst); size = roundup(sizeof(uint32_t) * MFG_PUBK_DSC_WORDS, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)dsc, (unsigned long)dsc + size); size = roundup(FSL_CAAM_MP_PUBK_BYTES, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)dst, (unsigned long)dst + size); /* Execute Job Descriptor */ puts("\nGenerating Manufacturing Protection Public Key\n"); ret = run_descriptor_jr(dsc); if (ret) { debug("Error in public key generation %d\n", ret); goto err; } size = roundup(FSL_CAAM_MP_PUBK_BYTES, ARCH_DMA_MINALIGN); invalidate_dcache_range((unsigned long)dst, (unsigned long)dst + size); err: free(dsc); return ret; } int sign_mppubk(const u8 *m, int data_size, u8 *dgst, u8 *c, u8 *d) { int size, ret; u32 *dsc; /* Job Descriptor initialization */ dsc = memalign(ARCH_DMA_MINALIGN, sizeof(uint32_t) * MFG_SIGN_DSC_WORDS); if (!dsc) { debug("Not enough memory for descriptor allocation\n"); return -ENOMEM; } mfg_build_sign_dsc(dsc, m, data_size, dgst, c, d); size = roundup(sizeof(uint32_t) * MFG_SIGN_DSC_WORDS, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)dsc, (unsigned long)dsc + size); size = roundup(data_size, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)m, (unsigned long)m + size); size = roundup(FSL_CAAM_MP_MES_DGST_BYTES, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)dgst, (unsigned long)dgst + size); size = roundup(FSL_CAAM_MP_PRVK_BYTES, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)c, (unsigned long)c + size); flush_dcache_range((unsigned long)d, (unsigned long)d + size); /* Execute Job Descriptor */ puts("\nSigning message with Manufacturing Protection Private Key\n"); ret = run_descriptor_jr(dsc); if (ret) { debug("Error in public key generation %d\n", ret); goto err; } size = roundup(FSL_CAAM_MP_MES_DGST_BYTES, ARCH_DMA_MINALIGN); invalidate_dcache_range((unsigned long)dgst, (unsigned long)dgst + size); size = roundup(FSL_CAAM_MP_PRVK_BYTES, ARCH_DMA_MINALIGN); invalidate_dcache_range((unsigned long)c, (unsigned long)c + size); invalidate_dcache_range((unsigned long)d, (unsigned long)d + size); err: free(dsc); return ret; } |