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/*
* Copyright (c) 2016-2019, 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/common/platform.h>
#include <platform_def.h>
#include <tools_share/tbbr_oid.h>
/*
* 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;
}
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