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https://github.com/AsahiLinux/u-boot
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106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
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/*
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* (C) Copyright 2018 Xilinx, Inc.
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* Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <malloc.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/io.h>
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static int zynqmp_verify_secure(u8 *key_ptr, u8 *src_ptr, u32 len)
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{
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int ret;
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u32 src_lo, src_hi;
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u32 key_lo = 0;
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u32 key_hi = 0;
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u32 ret_payload[PAYLOAD_ARG_CNT];
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u64 addr;
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if ((ulong)src_ptr != ALIGN((ulong)src_ptr,
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CONFIG_SYS_CACHELINE_SIZE)) {
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printf("Failed: source address not aligned:%p\n", src_ptr);
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return -EINVAL;
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}
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src_lo = lower_32_bits((ulong)src_ptr);
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src_hi = upper_32_bits((ulong)src_ptr);
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flush_dcache_range((ulong)src_ptr, (ulong)(src_ptr + len));
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if (key_ptr) {
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key_lo = lower_32_bits((ulong)key_ptr);
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key_hi = upper_32_bits((ulong)key_ptr);
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flush_dcache_range((ulong)key_ptr,
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(ulong)(key_ptr + KEY_PTR_LEN));
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}
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ret = invoke_smc(ZYNQMP_SIP_SVC_PM_SECURE_IMG_LOAD, src_lo, src_hi,
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key_lo, key_hi, ret_payload);
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if (ret) {
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printf("Failed: secure op status:0x%x\n", ret);
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} else {
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addr = (u64)ret_payload[1] << 32 | ret_payload[2];
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printf("Verified image at 0x%llx\n", addr);
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env_set_hex("zynqmp_verified_img_addr", addr);
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}
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return ret;
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}
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/**
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* do_zynqmp - Handle the "zynqmp" 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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* Processes the zynqmp specific commands
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*
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* Return: return 0 on success and CMD_RET_USAGE incase of misuse and error
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*/
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static int do_zynqmp(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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u64 src_addr;
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u32 len;
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u8 *key_ptr = NULL;
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u8 *src_ptr;
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int ret;
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if (argc > 5 || argc < 4 || strncmp(argv[1], "secure", 6))
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return CMD_RET_USAGE;
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src_addr = simple_strtoull(argv[2], NULL, 16);
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len = simple_strtoul(argv[3], NULL, 16);
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if (argc > 4)
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key_ptr = (uint8_t *)(uintptr_t)simple_strtoull(argv[4],
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NULL, 16);
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src_ptr = (uint8_t *)(uintptr_t)src_addr;
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ret = zynqmp_verify_secure(key_ptr, src_ptr, len);
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if (ret)
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return CMD_RET_FAILURE;
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return CMD_RET_SUCCESS;
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}
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/***************************************************/
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#ifdef CONFIG_SYS_LONGHELP
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static char zynqmp_help_text[] =
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"secure src len [key_addr] - verifies secure images of $len bytes\n"
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" long at address $src. Optional key_addr\n"
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" can be specified if user key needs to\n"
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" be used for decryption\n";
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#endif
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U_BOOT_CMD(
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zynqmp, 5, 1, do_zynqmp,
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"Verify and load secure images",
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zynqmp_help_text
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)
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