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7be391d1ce
pVMs on Android 14 has a platform requirement to support SMCCC TRNG discovery. This implementation add a dummy TRNG support to TC2. Signed-off-by: Tamas Ban <tamas.ban@arm.com> Change-Id: Iae0ca546cadf48a6a404ae578c7ccf5a84d057c4
43 lines
855 B
C
43 lines
855 B
C
/*
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* Copyright (c) 2017-2024, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <arm_acle.h>
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#include <assert.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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#include <lib/mmio.h>
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#include <lib/smccc.h>
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#include <lib/utils_def.h>
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#include <plat/common/platform.h>
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#include <platform_def.h>
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#include <services/trng_svc.h>
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#include <smccc_helpers.h>
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DEFINE_SVC_UUID2(_plat_trng_uuid,
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0x23523c58, 0x7448, 0x4083, 0x9d, 0x16,
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0xe3, 0xfa, 0xb9, 0xf1, 0x73, 0xbc
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);
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uuid_t plat_trng_uuid;
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/* Dummy implementation */
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bool plat_get_entropy(uint64_t *out)
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{
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*out = 0xABBAEDDAACDCDEAD;
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return true;
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}
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void plat_entropy_setup(void)
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{
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uint64_t dummy;
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plat_trng_uuid = _plat_trng_uuid;
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/* Initialise the entropy source and trigger RNG generation */
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plat_get_entropy(&dummy);
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}
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