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arm-bsp/trusted-firmware-a: corstone1000: Add patch for removing dependency of GICC frame for GICv3

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GICC registers are not defined for GICv3. Trusted-Firmware-A throws error when
GICC register address is not defined even for GICv3. Adding patch
to handle this in Trusted-Firmware-A.

Signed-off-by: Harsimran Singh Tungal <harsimransingh.tungal@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Harsimran Singh Tungal
2025-11-11 16:54:22 +00:00
committed by Jon Mason
parent 2e54d47d10
commit 548a5a8c36
2 changed files with 46 additions and 0 deletions
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45
meta-arm/recipes-bsp/trusted-firmware-a/files/0002-fix-css-don-t-require-the-GICC-frame-to-be-defined-o.patch Normal file
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@@ -0,0 +1,45 @@
From 60d103759b0835d61d90c8f2fbc7cf55f37e61a0 Mon Sep 17 00:00:00 2001
From: Boyan Karatotev <boyan.karatotev@arm.com>
Date: Wed, 22 Oct 2025 13:52:28 +0100
Subject: [PATCH] fix(css): don't require the GICC frame to be defined on GICv3
It's used for GICv2 operation, which won't happen with v3. CSS will
always use USE_GIC_DRIVER with the correct version so we can rely on
that to skip passing the GICC frame.
Upstream-Status: Backport [e3c36e35f8f92f817e537064d97a3816c339c704]
Change-Id: I358b99646f98bd7c6ea398bc8d8900cc80ca15bb
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
---
include/plat/arm/css/common/aarch64/css_macros.S | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/include/plat/arm/css/common/aarch64/css_macros.S b/include/plat/arm/css/common/aarch64/css_macros.S
index 85a7044d7..8a687d582 100644
--- a/include/plat/arm/css/common/aarch64/css_macros.S
+++ b/include/plat/arm/css/common/aarch64/css_macros.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2025, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -18,7 +18,14 @@
*/
.macro css_print_gic_regs
mov_imm x16, PLAT_ARM_GICD_BASE
+ /*
+ * The ID registers will show GIC version, so it can safely be assumed
+ * that no v2 operation will be attempted on v3. Don't require the
+ * macro.
+ */
+#if USE_GIC_DRIVER == 2
mov_imm x17, PLAT_ARM_GICC_BASE
+#endif
arm_print_gic_regs
.endm
--
2.43.0

1
meta-arm/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.13.0.bb
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@@ -16,4 +16,5 @@ LIC_FILES_CHKSUM_MBEDTLS = "file://mbedtls/LICENSE;md5=379d5819937a6c2f1ef1630d3
SRC_URI += "\
file://0001-fix-arm-re-enable-console-by-default-in-BL31.patch \
file://0002-fix-css-don-t-require-the-GICC-frame-to-be-defined-o.patch \
"