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312 lines
9.3 KiB
312 lines
9.3 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* SEC Descriptor Construction Library |
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* Basic job descriptor construction |
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* |
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* Copyright 2014 Freescale Semiconductor, Inc. |
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* |
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*/ |
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#include <common.h> |
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#include <fsl_sec.h> |
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#include "desc_constr.h" |
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#include "jobdesc.h" |
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#include "rsa_caam.h" |
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#if defined(CONFIG_MX6) || defined(CONFIG_MX7) |
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/*! |
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* Secure memory run command |
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* |
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* @param sec_mem_cmd Secure memory command register |
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* @return cmd_status Secure memory command status register |
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*/ |
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uint32_t secmem_set_cmd(uint32_t sec_mem_cmd) |
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{ |
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uint32_t temp_reg; |
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ccsr_sec_t *sec = (void *)CONFIG_SYS_FSL_SEC_ADDR; |
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uint32_t sm_vid = SM_VERSION(sec_in32(&sec->smvid)); |
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uint32_t jr_id = 0; |
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sec_out32(CAAM_SMCJR(sm_vid, jr_id), sec_mem_cmd); |
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do { |
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temp_reg = sec_in32(CAAM_SMCSJR(sm_vid, jr_id)); |
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} while (temp_reg & CMD_COMPLETE); |
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return temp_reg; |
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} |
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/*! |
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* CAAM page allocation: |
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* Allocates a partition from secure memory, with the id |
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* equal to partition_num. This will de-allocate the page |
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* if it is already allocated. The partition will have |
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* full access permissions. The permissions are set before, |
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* running a job descriptor. A memory page of secure RAM |
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* is allocated for the partition. |
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* |
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* @param page Number of the page to allocate. |
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* @param partition Number of the partition to allocate. |
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* @return 0 on success, ERROR_IN_PAGE_ALLOC otherwise |
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*/ |
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int caam_page_alloc(uint8_t page_num, uint8_t partition_num) |
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{ |
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uint32_t temp_reg; |
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ccsr_sec_t *sec = (void *)CONFIG_SYS_FSL_SEC_ADDR; |
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uint32_t sm_vid = SM_VERSION(sec_in32(&sec->smvid)); |
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uint32_t jr_id = 0; |
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/* |
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* De-Allocate partition_num if already allocated to ARM core |
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*/ |
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if (sec_in32(CAAM_SMPO_0) & PARTITION_OWNER(partition_num)) { |
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temp_reg = secmem_set_cmd(PARTITION(partition_num) | |
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CMD_PART_DEALLOC); |
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if (temp_reg & SMCSJR_AERR) { |
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printf("Error: De-allocation status 0x%X\n", temp_reg); |
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return ERROR_IN_PAGE_ALLOC; |
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} |
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} |
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/* set the access rights to allow full access */ |
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sec_out32(CAAM_SMAG1JR(sm_vid, jr_id, partition_num), 0xF); |
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sec_out32(CAAM_SMAG2JR(sm_vid, jr_id, partition_num), 0xF); |
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sec_out32(CAAM_SMAPJR(sm_vid, jr_id, partition_num), 0xFF); |
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/* Now need to allocate partition_num of secure RAM. */ |
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/* De-Allocate page_num by starting with a page inquiry command */ |
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temp_reg = secmem_set_cmd(PAGE(page_num) | CMD_INQUIRY); |
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/* if the page is owned, de-allocate it */ |
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if ((temp_reg & SMCSJR_PO) == PAGE_OWNED) { |
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temp_reg = secmem_set_cmd(PAGE(page_num) | CMD_PAGE_DEALLOC); |
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if (temp_reg & SMCSJR_AERR) { |
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printf("Error: Allocation status 0x%X\n", temp_reg); |
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return ERROR_IN_PAGE_ALLOC; |
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} |
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} |
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/* Allocate page_num to partition_num */ |
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temp_reg = secmem_set_cmd(PAGE(page_num) | PARTITION(partition_num) |
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| CMD_PAGE_ALLOC); |
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if (temp_reg & SMCSJR_AERR) { |
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printf("Error: Allocation status 0x%X\n", temp_reg); |
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return ERROR_IN_PAGE_ALLOC; |
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} |
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/* page inquiry command to ensure that the page was allocated */ |
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temp_reg = secmem_set_cmd(PAGE(page_num) | CMD_INQUIRY); |
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/* if the page is not owned => problem */ |
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if ((temp_reg & SMCSJR_PO) != PAGE_OWNED) { |
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printf("Allocation of page %d in partition %d failed 0x%X\n", |
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temp_reg, page_num, partition_num); |
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return ERROR_IN_PAGE_ALLOC; |
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} |
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return 0; |
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} |
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int inline_cnstr_jobdesc_blob_dek(uint32_t *desc, const uint8_t *plain_txt, |
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uint8_t *dek_blob, uint32_t in_sz) |
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{ |
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ccsr_sec_t *sec = (void *)CONFIG_SYS_FSL_SEC_ADDR; |
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uint32_t sm_vid = SM_VERSION(sec_in32(&sec->smvid)); |
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uint32_t jr_id = 0; |
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uint32_t ret = 0; |
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u32 aad_w1, aad_w2; |
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/* output blob will have 32 bytes key blob in beginning and |
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* 16 byte HMAC identifier at end of data blob */ |
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uint32_t out_sz = in_sz + KEY_BLOB_SIZE + MAC_SIZE; |
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/* Setting HDR for blob */ |
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uint8_t wrapped_key_hdr[8] = {HDR_TAG, 0x00, WRP_HDR_SIZE + out_sz, |
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HDR_PAR, HAB_MOD, HAB_ALG, in_sz, HAB_FLG}; |
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/* initialize the blob array */ |
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memset(dek_blob, 0, out_sz + 8); |
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/* Copy the header into the DEK blob buffer */ |
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memcpy(dek_blob, wrapped_key_hdr, sizeof(wrapped_key_hdr)); |
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/* allocating secure memory */ |
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ret = caam_page_alloc(PAGE_1, PARTITION_1); |
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if (ret) |
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return ret; |
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/* Write DEK to secure memory */ |
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memcpy((uint32_t *)SEC_MEM_PAGE1, (uint32_t *)plain_txt, in_sz); |
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unsigned long start = (unsigned long)SEC_MEM_PAGE1 & |
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~(ARCH_DMA_MINALIGN - 1); |
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unsigned long end = ALIGN(start + 0x1000, ARCH_DMA_MINALIGN); |
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flush_dcache_range(start, end); |
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/* Now configure the access rights of the partition */ |
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sec_out32(CAAM_SMAG1JR(sm_vid, jr_id, PARTITION_1), KS_G1); |
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sec_out32(CAAM_SMAG2JR(sm_vid, jr_id, PARTITION_1), 0); |
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sec_out32(CAAM_SMAPJR(sm_vid, jr_id, PARTITION_1), PERM); |
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/* construct aad for AES */ |
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aad_w1 = (in_sz << OP_ALG_ALGSEL_SHIFT) | KEY_AES_SRC | LD_CCM_MODE; |
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aad_w2 = 0x0; |
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init_job_desc(desc, 0); |
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append_cmd(desc, CMD_LOAD | CLASS_2 | KEY_IMM | KEY_ENC | |
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(0x0c << LDST_OFFSET_SHIFT) | 0x08); |
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append_u32(desc, aad_w1); |
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append_u32(desc, aad_w2); |
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append_cmd_ptr(desc, (dma_addr_t)SEC_MEM_PAGE1, in_sz, CMD_SEQ_IN_PTR); |
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append_cmd_ptr(desc, (dma_addr_t)dek_blob + 8, out_sz, CMD_SEQ_OUT_PTR); |
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append_operation(desc, OP_TYPE_ENCAP_PROTOCOL | OP_PCLID_BLOB | |
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OP_PCLID_SECMEM); |
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return ret; |
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} |
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#endif |
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void inline_cnstr_jobdesc_hash(uint32_t *desc, |
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const uint8_t *msg, uint32_t msgsz, uint8_t *digest, |
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u32 alg_type, uint32_t alg_size, int sg_tbl) |
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{ |
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/* SHA 256 , output is of length 32 words */ |
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uint32_t storelen = alg_size; |
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u32 options; |
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dma_addr_t dma_addr_in, dma_addr_out; |
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dma_addr_in = virt_to_phys((void *)msg); |
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dma_addr_out = virt_to_phys((void *)digest); |
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init_job_desc(desc, 0); |
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append_operation(desc, OP_TYPE_CLASS2_ALG | |
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OP_ALG_AAI_HASH | OP_ALG_AS_INITFINAL | |
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OP_ALG_ENCRYPT | OP_ALG_ICV_OFF | alg_type); |
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options = LDST_CLASS_2_CCB | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST2; |
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if (sg_tbl) |
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options |= FIFOLDST_SGF; |
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if (msgsz > 0xffff) { |
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options |= FIFOLDST_EXT; |
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append_fifo_load(desc, dma_addr_in, 0, options); |
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append_cmd(desc, msgsz); |
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} else { |
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append_fifo_load(desc, dma_addr_in, msgsz, options); |
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} |
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append_store(desc, dma_addr_out, storelen, |
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LDST_CLASS_2_CCB | LDST_SRCDST_BYTE_CONTEXT); |
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} |
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#ifndef CONFIG_SPL_BUILD |
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void inline_cnstr_jobdesc_blob_encap(uint32_t *desc, uint8_t *key_idnfr, |
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uint8_t *plain_txt, uint8_t *enc_blob, |
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uint32_t in_sz) |
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{ |
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dma_addr_t dma_addr_key_idnfr, dma_addr_in, dma_addr_out; |
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uint32_t key_sz = KEY_IDNFR_SZ_BYTES; |
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/* output blob will have 32 bytes key blob in beginning and |
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* 16 byte HMAC identifier at end of data blob */ |
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uint32_t out_sz = in_sz + KEY_BLOB_SIZE + MAC_SIZE; |
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dma_addr_key_idnfr = virt_to_phys((void *)key_idnfr); |
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dma_addr_in = virt_to_phys((void *)plain_txt); |
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dma_addr_out = virt_to_phys((void *)enc_blob); |
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init_job_desc(desc, 0); |
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append_key(desc, dma_addr_key_idnfr, key_sz, CLASS_2); |
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append_seq_in_ptr(desc, dma_addr_in, in_sz, 0); |
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append_seq_out_ptr(desc, dma_addr_out, out_sz, 0); |
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append_operation(desc, OP_TYPE_ENCAP_PROTOCOL | OP_PCLID_BLOB); |
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} |
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void inline_cnstr_jobdesc_blob_decap(uint32_t *desc, uint8_t *key_idnfr, |
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uint8_t *enc_blob, uint8_t *plain_txt, |
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uint32_t out_sz) |
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{ |
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dma_addr_t dma_addr_key_idnfr, dma_addr_in, dma_addr_out; |
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uint32_t key_sz = KEY_IDNFR_SZ_BYTES; |
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uint32_t in_sz = out_sz + KEY_BLOB_SIZE + MAC_SIZE; |
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dma_addr_key_idnfr = virt_to_phys((void *)key_idnfr); |
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dma_addr_in = virt_to_phys((void *)enc_blob); |
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dma_addr_out = virt_to_phys((void *)plain_txt); |
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init_job_desc(desc, 0); |
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append_key(desc, dma_addr_key_idnfr, key_sz, CLASS_2); |
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append_seq_in_ptr(desc, dma_addr_in, in_sz, 0); |
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append_seq_out_ptr(desc, dma_addr_out, out_sz, 0); |
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append_operation(desc, OP_TYPE_DECAP_PROTOCOL | OP_PCLID_BLOB); |
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} |
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#endif |
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/* |
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* Descriptor to instantiate RNG State Handle 0 in normal mode and |
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* load the JDKEK, TDKEK and TDSK registers |
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*/ |
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void inline_cnstr_jobdesc_rng_instantiation(uint32_t *desc, int handle) |
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{ |
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u32 *jump_cmd; |
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init_job_desc(desc, 0); |
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/* INIT RNG in non-test mode */ |
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append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | |
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(handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INIT); |
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/* For SH0, Secure Keys must be generated as well */ |
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if (handle == 0) { |
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/* wait for done */ |
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jump_cmd = append_jump(desc, JUMP_CLASS_CLASS1); |
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set_jump_tgt_here(desc, jump_cmd); |
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/* |
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* load 1 to clear written reg: |
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* resets the done interrupt and returns the RNG to idle. |
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*/ |
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append_load_imm_u32(desc, 1, LDST_SRCDST_WORD_CLRW); |
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/* generate secure keys (non-test) */ |
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append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | |
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OP_ALG_RNG4_SK); |
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} |
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} |
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/* Change key size to bytes form bits in calling function*/ |
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void inline_cnstr_jobdesc_pkha_rsaexp(uint32_t *desc, |
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struct pk_in_params *pkin, uint8_t *out, |
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uint32_t out_siz) |
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{ |
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dma_addr_t dma_addr_e, dma_addr_a, dma_addr_n, dma_addr_out; |
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dma_addr_e = virt_to_phys((void *)pkin->e); |
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dma_addr_a = virt_to_phys((void *)pkin->a); |
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dma_addr_n = virt_to_phys((void *)pkin->n); |
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dma_addr_out = virt_to_phys((void *)out); |
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init_job_desc(desc, 0); |
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append_key(desc, dma_addr_e, pkin->e_siz, KEY_DEST_PKHA_E | CLASS_1); |
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append_fifo_load(desc, dma_addr_a, |
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pkin->a_siz, LDST_CLASS_1_CCB | FIFOLD_TYPE_PK_A); |
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append_fifo_load(desc, dma_addr_n, |
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pkin->n_siz, LDST_CLASS_1_CCB | FIFOLD_TYPE_PK_N); |
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append_operation(desc, OP_TYPE_PK | OP_ALG_PK | OP_ALG_PKMODE_MOD_EXPO); |
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append_fifo_store(desc, dma_addr_out, out_siz, |
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LDST_CLASS_1_CCB | FIFOST_TYPE_PKHA_B); |
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}
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