| /* |
| * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <assert.h> |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include <lib/mmio.h> |
| #include <plat/arm/common/plat_arm.h> |
| #include <plat/common/platform.h> |
| #include <platform_def.h> |
| #include <tools_share/tbbr_oid.h> |
| |
| /* |
| * Return the ROTPK hash in the following ASN.1 structure in DER format: |
| * |
| * AlgorithmIdentifier ::= SEQUENCE { |
| * algorithm OBJECT IDENTIFIER, |
| * parameters ANY DEFINED BY algorithm OPTIONAL |
| * } |
| * |
| * DigestInfo ::= SEQUENCE { |
| * digestAlgorithm AlgorithmIdentifier, |
| * digest OCTET STRING |
| * } |
| */ |
| int plat_get_rotpk_info(void *cookie, void **key_ptr, unsigned int *key_len, |
| unsigned int *flags) |
| { |
| return arm_get_rotpk_info(cookie, key_ptr, key_len, flags); |
| } |
| |
| /* |
| * Store a new non-volatile counter value. |
| * |
| * On some FVP versions, the non-volatile counters are read-only so this |
| * function will always fail. |
| * |
| * Return: 0 = success, Otherwise = error |
| */ |
| int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr) |
| { |
| const char *oid; |
| uintptr_t nv_ctr_addr; |
| |
| assert(cookie != NULL); |
| |
| oid = (const char *)cookie; |
| if (strcmp(oid, TRUSTED_FW_NVCOUNTER_OID) == 0) { |
| nv_ctr_addr = TFW_NVCTR_BASE; |
| } else if (strcmp(oid, NON_TRUSTED_FW_NVCOUNTER_OID) == 0) { |
| nv_ctr_addr = NTFW_CTR_BASE; |
| } else { |
| return 1; |
| } |
| |
| mmio_write_32(nv_ctr_addr, nv_ctr); |
| |
| /* |
| * If the FVP models a locked counter then its value cannot be updated |
| * and the above write operation has been silently ignored. |
| */ |
| return (mmio_read_32(nv_ctr_addr) == nv_ctr) ? 0 : 1; |
| } |