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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
commit | 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch) | |
tree | bcf648efac40ca6139842707f0eba5a4496a6dd2 /plat/arm/board/fvp/fvp_trusted_boot.c | |
parent | Initial commit. (diff) | |
download | arm-trusted-firmware-upstream.tar.xz arm-trusted-firmware-upstream.zip |
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plat/arm/board/fvp/fvp_trusted_boot.c')
-rw-r--r-- | plat/arm/board/fvp/fvp_trusted_boot.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/plat/arm/board/fvp/fvp_trusted_boot.c b/plat/arm/board/fvp/fvp_trusted_boot.c new file mode 100644 index 0000000..1ea37f7 --- /dev/null +++ b/plat/arm/board/fvp/fvp_trusted_boot.c @@ -0,0 +1,71 @@ +/* + * 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 <lib/fconf/fconf.h> +#include <plat/arm/common/plat_arm.h> +#include <plat/arm/common/fconf_nv_cntr_getter.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 = FCONF_GET_PROPERTY(cot, nv_cntr_addr, + TRUSTED_NV_CTR_ID); + } else if (strcmp(oid, NON_TRUSTED_FW_NVCOUNTER_OID) == 0) { + nv_ctr_addr = FCONF_GET_PROPERTY(cot, nv_cntr_addr, + NON_TRUSTED_NV_CTR_ID); + } 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; +} |