// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2014 Freescale Semiconductor, Inc. * */ #include <common.h> #include <malloc.h> #include <memalign.h> #include <fsl_sec.h> #include <linux/errno.h> #include "jobdesc.h" #include "desc.h" #include "jr.h" /** * blob_decap() - Decapsulate the data from a blob * @key_mod: - Key modifier address * @src: - Source address (blob) * @dst: - Destination address (data) * @len: - Size of decapsulated data * * Note: Start and end of the key_mod, src and dst buffers have to be aligned to * the cache line size (ARCH_DMA_MINALIGN) for the CAAM operation to succeed. * * Returns zero on success, negative on error. */ int blob_decap(u8 *key_mod, u8 *src, u8 *dst, u32 len) { int ret, size, i = 0; u32 *desc; if (!IS_ALIGNED((uintptr_t)key_mod, ARCH_DMA_MINALIGN) || !IS_ALIGNED((uintptr_t)src, ARCH_DMA_MINALIGN) || !IS_ALIGNED((uintptr_t)dst, ARCH_DMA_MINALIGN)) { puts("Error: blob_decap: Address arguments are not aligned!\n"); return -EINVAL; } printf("\nDecapsulating blob to get data\n"); desc = malloc_cache_aligned(sizeof(int) * MAX_CAAM_DESCSIZE); if (!desc) { debug("Not enough memory for descriptor allocation\n"); return -ENOMEM; } size = ALIGN(16, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)key_mod, (unsigned long)key_mod + size); size = ALIGN(BLOB_SIZE(len), ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)src, (unsigned long)src + size); inline_cnstr_jobdesc_blob_decap(desc, key_mod, src, dst, len); debug("Descriptor dump:\n"); for (i = 0; i < 14; i++) debug("Word[%d]: %08x\n", i, *(desc + i)); size = ALIGN(sizeof(int) * MAX_CAAM_DESCSIZE, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)desc, (unsigned long)desc + size); ret = run_descriptor_jr(desc); if (ret) { printf("Error in blob decapsulation: %d\n", ret); } else { size = ALIGN(len, ARCH_DMA_MINALIGN); invalidate_dcache_range((unsigned long)dst, (unsigned long)dst + size); puts("Blob decapsulation successful.\n"); } free(desc); return ret; } /** * blob_encap() - Encapsulate the data as a blob * @key_mod: - Key modifier address * @src: - Source address (data) * @dst: - Destination address (blob) * @len: - Size of data to be encapsulated * * Note: Start and end of the key_mod, src and dst buffers have to be aligned to * the cache line size (ARCH_DMA_MINALIGN) for the CAAM operation to succeed. * * Returns zero on success, negative on error. */ int blob_encap(u8 *key_mod, u8 *src, u8 *dst, u32 len) { int ret, size, i = 0; u32 *desc; if (!IS_ALIGNED((uintptr_t)key_mod, ARCH_DMA_MINALIGN) || !IS_ALIGNED((uintptr_t)src, ARCH_DMA_MINALIGN) || !IS_ALIGNED((uintptr_t)dst, ARCH_DMA_MINALIGN)) { puts("Error: blob_encap: Address arguments are not aligned!\n"); return -EINVAL; } printf("\nEncapsulating data to form blob\n"); desc = malloc_cache_aligned(sizeof(int) * MAX_CAAM_DESCSIZE); if (!desc) { debug("Not enough memory for descriptor allocation\n"); return -ENOMEM; } size = ALIGN(16, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)key_mod, (unsigned long)key_mod + size); size = ALIGN(len, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)src, (unsigned long)src + size); inline_cnstr_jobdesc_blob_encap(desc, key_mod, src, dst, len); debug("Descriptor dump:\n"); for (i = 0; i < 14; i++) debug("Word[%d]: %08x\n", i, *(desc + i)); size = ALIGN(sizeof(int) * MAX_CAAM_DESCSIZE, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)desc, (unsigned long)desc + size); ret = run_descriptor_jr(desc); if (ret) { printf("Error in blob encapsulation: %d\n", ret); } else { size = ALIGN(BLOB_SIZE(len), ARCH_DMA_MINALIGN); invalidate_dcache_range((unsigned long)dst, (unsigned long)dst + size); puts("Blob encapsulation successful.\n"); } free(desc); return ret; } #ifdef CONFIG_CMD_DEKBLOB int blob_dek(const u8 *src, u8 *dst, u8 len) { int ret, size, i = 0; u32 *desc; int out_sz = WRP_HDR_SIZE + len + KEY_BLOB_SIZE + MAC_SIZE; puts("\nEncapsulating provided DEK to form blob\n"); desc = memalign(ARCH_DMA_MINALIGN, sizeof(uint32_t) * DEK_BLOB_DESCSIZE); if (!desc) { debug("Not enough memory for descriptor allocation\n"); return -ENOMEM; } ret = inline_cnstr_jobdesc_blob_dek(desc, src, dst, len); if (ret) { debug("Error in Job Descriptor Construction: %d\n", ret); } else { size = roundup(sizeof(uint32_t) * DEK_BLOB_DESCSIZE, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)desc, (unsigned long)desc + size); size = roundup(sizeof(uint8_t) * out_sz, ARCH_DMA_MINALIGN); flush_dcache_range((unsigned long)dst, (unsigned long)dst + size); ret = run_descriptor_jr(desc); } if (ret) { debug("Error in Encapsulation %d\n", ret); goto err; } size = roundup(out_sz, ARCH_DMA_MINALIGN); invalidate_dcache_range((unsigned long)dst, (unsigned long)dst+size); puts("DEK Blob\n"); for (i = 0; i < out_sz; i++) printf("%02X", ((uint8_t *)dst)[i]); printf("\n"); err: free(desc); return ret; } #endif