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a57e18e433
This patch enables support of FEAT_FPMR by enabling access to FPMR register. It achieves it by setting the EnFPM bit of SCR_EL3. This feature is currently enabled for NS world only. Reference: https://developer.arm.com/documentation/109697/2024_09/ Feature-descriptions/The-Armv9-5-architecture-extension?lang=en Change-Id: I580c409b9b22f8ead0737502280fb9093a3d5dd2 Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
20 lines
439 B
C
20 lines
439 B
C
/*
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* Copyright (c) 2024, Arm Limited. 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 <arch.h>
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#include <arch_features.h>
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#include <arch_helpers.h>
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#include <lib/extensions/fpmr.h>
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void fpmr_enable_per_world(per_world_context_t *per_world_ctx)
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{
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u_register_t reg;
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/* Disable Floating point Trap in CPTR_EL3. */
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reg = per_world_ctx->ctx_cptr_el3;
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reg &= ~TFP_BIT;
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per_world_ctx->ctx_cptr_el3 = reg;
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}
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