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https://github.com/AsahiLinux/u-boot
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150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2016 Freescale Semiconductor, Inc.
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* Copyright 2017 NXP
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*
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* These commands enable the use of the CAAM MPPubK-generation and MPSign
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* functions in supported i.MX devices.
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*/
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#include <asm/byteorder.h>
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#include <asm/arch/clock.h>
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#include <linux/compiler.h>
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#include <command.h>
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#include <common.h>
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#include <environment.h>
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#include <fsl_sec.h>
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#include <mapmem.h>
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#include <memalign.h>
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DECLARE_GLOBAL_DATA_PTR;
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/**
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* do_mfgprot() - Handle the "mfgprot" 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_mfgprot(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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u8 *m_ptr, *dgst_ptr, *c_ptr, *d_ptr, *dst_ptr;
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char *pubk, *sign, *sel;
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int m_size, i, ret;
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u32 m_addr;
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pubk = "pubk";
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sign = "sign";
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sel = argv[1];
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/* Enable HAB clock */
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hab_caam_clock_enable(1);
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u32 out_jr_size = sec_in32(CONFIG_SYS_FSL_JR0_ADDR +
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FSL_CAAM_ORSR_JRa_OFFSET);
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if (out_jr_size != FSL_CAAM_MAX_JR_SIZE)
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sec_init();
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if (strcmp(sel, pubk) == 0) {
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dst_ptr = malloc_cache_aligned(FSL_CAAM_MP_PUBK_BYTES);
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if (!dst_ptr)
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return -ENOMEM;
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ret = gen_mppubk(dst_ptr);
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if (ret) {
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free(dst_ptr);
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return ret;
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}
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/* Output results */
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puts("Public key:\n");
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for (i = 0; i < FSL_CAAM_MP_PUBK_BYTES; i++)
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printf("%02X", (dst_ptr)[i]);
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puts("\n");
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free(dst_ptr);
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} else if (strcmp(sel, sign) == 0) {
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if (argc != 4)
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return CMD_RET_USAGE;
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m_addr = hextoul(argv[2], NULL);
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m_size = dectoul(argv[3], NULL);
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m_ptr = map_physmem(m_addr, m_size, MAP_NOCACHE);
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if (!m_ptr)
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return -ENOMEM;
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dgst_ptr = malloc_cache_aligned(FSL_CAAM_MP_MES_DGST_BYTES);
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if (!dgst_ptr) {
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ret = -ENOMEM;
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goto free_m;
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}
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c_ptr = malloc_cache_aligned(FSL_CAAM_MP_PRVK_BYTES);
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if (!c_ptr) {
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ret = -ENOMEM;
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goto free_dgst;
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}
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d_ptr = malloc_cache_aligned(FSL_CAAM_MP_PRVK_BYTES);
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if (!d_ptr) {
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ret = -ENOMEM;
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goto free_c;
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}
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ret = sign_mppubk(m_ptr, m_size, dgst_ptr, c_ptr, d_ptr);
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if (ret)
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goto free_d;
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/* Output results */
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puts("Message: ");
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for (i = 0; i < m_size; i++)
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printf("%02X ", (m_ptr)[i]);
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puts("\n");
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puts("Message Representative Digest(SHA-256):\n");
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for (i = 0; i < FSL_CAAM_MP_MES_DGST_BYTES; i++)
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printf("%02X", (dgst_ptr)[i]);
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puts("\n");
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puts("Signature:\n");
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puts("C:\n");
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for (i = 0; i < FSL_CAAM_MP_PRVK_BYTES; i++)
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printf("%02X", (c_ptr)[i]);
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puts("\n");
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puts("d:\n");
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for (i = 0; i < FSL_CAAM_MP_PRVK_BYTES; i++)
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printf("%02X", (d_ptr)[i]);
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puts("\n");
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free_d:
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free(d_ptr);
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free_c:
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free(c_ptr);
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free_dgst:
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free(dgst_ptr);
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free_m:
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unmap_sysmem(m_ptr);
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} else {
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return CMD_RET_USAGE;
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}
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return ret;
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}
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/***************************************************/
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static char mfgprot_help_text[] =
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"Usage:\n"
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"Print the public key for Manufacturing Protection\n"
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"\tmfgprot pubk\n"
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"Generates a Manufacturing Protection signature\n"
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"\tmfgprot sign <data_addr> <size>";
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U_BOOT_CMD(
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mfgprot, 4, 1, do_mfgprot,
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"Manufacturing Protection\n",
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mfgprot_help_text
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);
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