mirror of
https://github.com/brain-hackers/u-boot-brain
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d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/*
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* Copyright 2008-2015 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* Command for encapsulating DEK blob
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*/
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <malloc.h>
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#include <asm/byteorder.h>
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#include <linux/compiler.h>
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#include <fsl_sec.h>
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#include <asm/arch/clock.h>
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#include <mapmem.h>
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/**
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* blob_dek() - Encapsulate the DEK as a blob using CAM's Key
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* @src: - Address of data to be encapsulated
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* @dst: - Desination address of encapsulated data
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* @len: - Size of data to be encapsulated
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*
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* Returns zero on success,and negative on error.
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*/
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static int blob_encap_dek(const u8 *src, u8 *dst, u32 len)
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{
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int ret = 0;
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u32 jr_size = 4;
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u32 out_jr_size = sec_in32(CONFIG_SYS_FSL_JR0_ADDR + 0x102c);
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if (out_jr_size != jr_size) {
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hab_caam_clock_enable(1);
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sec_init();
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}
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if (!((len == 128) | (len == 192) | (len == 256))) {
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debug("Invalid DEK size. Valid sizes are 128, 192 and 256b\n");
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return -1;
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}
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len /= 8;
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ret = blob_dek(src, dst, len);
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return ret;
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}
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/**
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* do_dek_blob() - Handle the "dek_blob" command-line command
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* @cmdtp: Command data struct pointer
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* @flag: Command flag
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* @argc: Command-line argument count
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* @argv: Array of command-line arguments
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*
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* Returns zero on success, CMD_RET_USAGE in case of misuse and negative
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* on error.
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*/
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static int do_dek_blob(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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{
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uint32_t src_addr, dst_addr, len;
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uint8_t *src_ptr, *dst_ptr;
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int ret = 0;
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if (argc != 4)
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return CMD_RET_USAGE;
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src_addr = simple_strtoul(argv[1], NULL, 16);
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dst_addr = simple_strtoul(argv[2], NULL, 16);
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len = simple_strtoul(argv[3], NULL, 10);
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src_ptr = map_sysmem(src_addr, len/8);
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dst_ptr = map_sysmem(dst_addr, BLOB_SIZE(len/8));
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ret = blob_encap_dek(src_ptr, dst_ptr, len);
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return ret;
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}
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/***************************************************/
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static char dek_blob_help_text[] =
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"src dst len - Encapsulate and create blob of data\n"
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" $len bits long at address $src and\n"
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" store the result at address $dst.\n";
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U_BOOT_CMD(
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dek_blob, 4, 1, do_dek_blob,
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"Data Encryption Key blob encapsulation",
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dek_blob_help_text
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);
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