348 lines
7.6 KiB
C
348 lines
7.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2018-2019 NXP
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*/
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#include <common.h>
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#include <errno.h>
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#include <asm/io.h>
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#include <asm/arch/sci/sci.h>
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#include <asm/mach-imx/sys_proto.h>
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#include <asm/arch-imx/cpu.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/image.h>
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#include <console.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define SEC_SECURE_RAM_BASE (0x31800000UL)
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#define SEC_SECURE_RAM_END_BASE (SEC_SECURE_RAM_BASE + 0xFFFFUL)
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#define SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE (0x60000000UL)
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#define SECO_PT 2U
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static inline bool check_in_dram(ulong addr)
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{
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int i;
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bd_t *bd = gd->bd;
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; ++i) {
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if (bd->bi_dram[i].size) {
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if (addr >= bd->bi_dram[i].start &&
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addr < (bd->bi_dram[i].start + bd->bi_dram[i].size))
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return true;
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}
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}
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return false;
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}
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int authenticate_os_container(ulong addr)
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{
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struct container_hdr *phdr;
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int i, ret = 0;
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int err;
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sc_rm_mr_t mr;
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sc_faddr_t start, end;
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u16 length;
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struct boot_img_t *img;
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unsigned long s, e;
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if (addr % 4) {
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puts("Error: Image's address is not 4 byte aligned\n");
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return -EINVAL;
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}
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if (!check_in_dram(addr)) {
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puts("Error: Image's address is invalid\n");
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return -EINVAL;
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}
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phdr = (struct container_hdr *)addr;
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if (phdr->tag != 0x87 && phdr->version != 0x0) {
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printf("Error: Wrong container header\n");
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return -EFAULT;
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}
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if (!phdr->num_images) {
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printf("Error: Wrong container, no image found\n");
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return -EFAULT;
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}
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length = phdr->length_lsb + (phdr->length_msb << 8);
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debug("container length %u\n", length);
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memcpy((void *)SEC_SECURE_RAM_BASE, (const void *)addr,
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ALIGN(length, CONFIG_SYS_CACHELINE_SIZE));
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err = sc_seco_authenticate(-1, SC_MISC_AUTH_CONTAINER,
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SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE);
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if (err) {
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printf("Authenticate container hdr failed, return %d\n",
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err);
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ret = -EIO;
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goto exit;
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}
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/* Copy images to dest address */
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for (i = 0; i < phdr->num_images; i++) {
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img = (struct boot_img_t *)(addr +
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sizeof(struct container_hdr) +
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i * sizeof(struct boot_img_t));
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debug("img %d, dst 0x%llx, src 0x%lx, size 0x%x\n",
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i, img->dst, img->offset + addr, img->size);
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memcpy((void *)img->dst, (const void *)(img->offset + addr),
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img->size);
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s = img->dst & ~(CONFIG_SYS_CACHELINE_SIZE - 1);
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e = ALIGN(img->dst + img->size, CONFIG_SYS_CACHELINE_SIZE);
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flush_dcache_range(s, e);
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/* Find the memreg and set permission for seco pt */
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err = sc_rm_find_memreg(-1, &mr, s, e);
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if (err) {
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printf("Not found memreg for image: %d, error %d\n",
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i, err);
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ret = -ENOMEM;
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goto exit;
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}
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err = sc_rm_get_memreg_info(-1, mr, &start, &end);
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if (!err)
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debug("memreg %u 0x%llx -- 0x%llx\n", mr, start, end);
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err = sc_rm_set_memreg_permissions(-1, mr, SECO_PT,
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SC_RM_PERM_FULL);
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if (err) {
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printf("Set permission failed for img %d, error %d\n",
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i, err);
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ret = -EPERM;
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goto exit;
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}
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err = sc_seco_authenticate(-1, SC_MISC_VERIFY_IMAGE,
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(1 << i));
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if (err) {
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printf("Authenticate img %d failed, return %d\n",
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i, err);
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ret = -EIO;
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}
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err = sc_rm_set_memreg_permissions(-1, mr, SECO_PT,
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SC_RM_PERM_NONE);
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if (err) {
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printf("Remove permission failed for img %d, err %d\n",
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i, err);
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ret = -EPERM;
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}
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if (ret)
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goto exit;
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}
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exit:
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if (sc_seco_authenticate(-1, SC_MISC_REL_CONTAINER, 0) != SC_ERR_NONE)
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printf("Error: release container failed!\n");
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return ret;
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}
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static int do_authenticate(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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ulong addr;
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if (argc < 2)
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return CMD_RET_USAGE;
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addr = simple_strtoul(argv[1], NULL, 16);
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printf("Authenticate OS container at 0x%lx\n", addr);
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if (authenticate_os_container(addr))
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return CMD_RET_FAILURE;
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return CMD_RET_SUCCESS;
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}
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static void display_life_cycle(u16 lc)
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{
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printf("Lifecycle: 0x%04X, ", lc);
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switch (lc) {
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case 0x1:
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printf("Pristine\n\n");
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break;
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case 0x2:
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printf("Fab\n\n");
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break;
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case 0x8:
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printf("Open\n\n");
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break;
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case 0x20:
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printf("NXP closed\n\n");
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break;
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case 0x80:
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printf("OEM closed\n\n");
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break;
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case 0x100:
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printf("Partial field return\n\n");
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break;
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case 0x200:
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printf("Full field return\n\n");
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break;
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case 0x400:
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printf("No return\n\n");
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break;
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default:
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printf("Unknown\n\n");
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break;
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}
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}
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#define AHAB_AUTH_CONTAINER_REQ 0x87
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#define AHAB_VERIFY_IMAGE_REQ 0x88
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#define AHAB_NO_AUTHENTICATION_IND 0xee
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#define AHAB_BAD_KEY_HASH_IND 0xfa
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#define AHAB_INVALID_KEY_IND 0xf9
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#define AHAB_BAD_SIGNATURE_IND 0xf0
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#define AHAB_BAD_HASH_IND 0xf1
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static void display_ahab_auth_event(u32 event)
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{
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u8 cmd = (event >> 16) & 0xff;
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u8 resp_ind = (event >> 8) & 0xff;
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switch (cmd) {
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case AHAB_AUTH_CONTAINER_REQ:
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printf("\tCMD = AHAB_AUTH_CONTAINER_REQ (0x%02X)\n", cmd);
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printf("\tIND = ");
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break;
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case AHAB_VERIFY_IMAGE_REQ:
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printf("\tCMD = AHAB_VERIFY_IMAGE_REQ (0x%02X)\n", cmd);
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printf("\tIND = ");
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break;
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default:
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return;
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}
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switch (resp_ind) {
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case AHAB_NO_AUTHENTICATION_IND:
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printf("AHAB_NO_AUTHENTICATION_IND (0x%02X)\n\n", resp_ind);
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break;
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case AHAB_BAD_KEY_HASH_IND:
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printf("AHAB_BAD_KEY_HASH_IND (0x%02X)\n\n", resp_ind);
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break;
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case AHAB_INVALID_KEY_IND:
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printf("AHAB_INVALID_KEY_IND (0x%02X)\n\n", resp_ind);
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break;
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case AHAB_BAD_SIGNATURE_IND:
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printf("AHAB_BAD_SIGNATURE_IND (0x%02X)\n\n", resp_ind);
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break;
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case AHAB_BAD_HASH_IND:
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printf("AHAB_BAD_HASH_IND (0x%02X)\n\n", resp_ind);
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break;
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default:
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printf("Unknown Indicator (0x%02X)\n\n", resp_ind);
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break;
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}
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}
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static int do_ahab_status(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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int err;
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u8 idx = 0U;
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u32 event;
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u16 lc;
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err = sc_seco_chip_info(-1, &lc, NULL, NULL, NULL);
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if (err != SC_ERR_NONE) {
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printf("Error in get lifecycle\n");
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return -EIO;
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}
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display_life_cycle(lc);
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err = sc_seco_get_event(-1, idx, &event);
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while (err == SC_ERR_NONE) {
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printf("SECO Event[%u] = 0x%08X\n", idx, event);
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display_ahab_auth_event(event);
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idx++;
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err = sc_seco_get_event(-1, idx, &event);
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}
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if (idx == 0)
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printf("No SECO Events Found!\n\n");
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return 0;
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}
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static int confirm_close(void)
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{
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puts("Warning: Please ensure your sample is in NXP closed state, "
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"OEM SRK hash has been fused, \n"
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" and you are able to boot a signed image successfully "
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"without any SECO events reported.\n"
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" If not, your sample will be unrecoverable.\n"
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"\nReally perform this operation? <y/N>\n");
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if (confirm_yesno())
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return 1;
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puts("Ahab close aborted\n");
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return 0;
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}
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static int do_ahab_close(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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int err;
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u16 lc;
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if (!confirm_close())
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return -EACCES;
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err = sc_seco_chip_info(-1, &lc, NULL, NULL, NULL);
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if (err != SC_ERR_NONE) {
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printf("Error in get lifecycle\n");
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return -EIO;
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}
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if (lc != 0x20) {
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puts("Current lifecycle is NOT NXP closed, can't move to OEM closed\n");
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display_life_cycle(lc);
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return -EPERM;
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}
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err = sc_seco_forward_lifecycle(-1, 16);
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if (err != SC_ERR_NONE) {
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printf("Error in forward lifecycle to OEM closed\n");
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return -EIO;
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}
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printf("Change to OEM closed successfully\n");
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return 0;
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}
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U_BOOT_CMD(auth_cntr, CONFIG_SYS_MAXARGS, 1, do_authenticate,
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"autenticate OS container via AHAB",
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"addr\n"
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"addr - OS container hex address\n"
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);
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U_BOOT_CMD(ahab_status, CONFIG_SYS_MAXARGS, 1, do_ahab_status,
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"display AHAB lifecycle and events from seco",
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""
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);
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U_BOOT_CMD(ahab_close, CONFIG_SYS_MAXARGS, 1, do_ahab_close,
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"Change AHAB lifecycle to OEM closed",
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""
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);
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