diff options
Diffstat (limited to 'roms/u-boot/drivers/crypto/fsl/fsl_blob.c')
| -rw-r--r-- | roms/u-boot/drivers/crypto/fsl/fsl_blob.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/crypto/fsl/fsl_blob.c b/roms/u-boot/drivers/crypto/fsl/fsl_blob.c new file mode 100644 index 000000000..e8202cc56 --- /dev/null +++ b/roms/u-boot/drivers/crypto/fsl/fsl_blob.c @@ -0,0 +1,203 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + */ + +#include <common.h> +#include <cpu_func.h> +#include <log.h> +#include <malloc.h> +#include <memalign.h> +#include <fsl_sec.h> +#include <asm/cache.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); + + flush_dcache_range((unsigned long)dst, + (unsigned long)dst + 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); + + flush_dcache_range((unsigned long)dst, + (unsigned long)dst + 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 |