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openloongarch-buildroot-202…/board/arm/fvp-ebbr/patches/arm-trusted-firmware/0001-feat-fvp-add-stdout-path.patch
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2025-02-12 17:59:29 +08:00

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From 8c30a0c7fe0162de0618b26fb34cc91ea582e5f7 Mon Sep 17 00:00:00 2001
From: Debbie Martin <Debbie.Martin@arm.com>
Date: Wed, 27 Sep 2023 18:05:26 +0100
Subject: [PATCH] feat(fvp): add stdout-path
Add stdout-path to the fvp-base devicetree to be passed to BL33 (U-Boot)
and then to the Linux kernel to be compliant to Arm SystemReady IR:
https://developer.arm.com/documentation/DUI1101/2-0/
Configure-U-Boot-for-SystemReady/Adapt-the-Devicetree
This has been tested by booting fvp-base to Linux and ensuring the
console is accessible.
Change-Id: Iae98630f18f735ce344c1158f41f358c2a49eeb6
Signed-off-by: Diego Sueiro <Diego.Sueiro@arm.com>
Signed-off-by: Debbie Martin <Debbie.Martin@arm.com>
Upstream: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/+/8c30a0c7fe0162de0618b26fb34cc91ea582e5f7%5E!/
Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
---
fdts/fvp-base-psci-common.dtsi | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/fdts/fvp-base-psci-common.dtsi b/fdts/fvp-base-psci-common.dtsi
index 79cf37d3b0..ff31ba7616 100644
--- a/fdts/fvp-base-psci-common.dtsi
+++ b/fdts/fvp-base-psci-common.dtsi
@@ -27,11 +27,12 @@
#address-cells = <2>;
#size-cells = <2>;
+ chosen {
+ stdout-path = "serial0:115200n8";
#if (ENABLE_RME == 1)
- chosen { bootargs = "console=ttyAMA0 earlycon=pl011,0x1c090000 root=/dev/vda ip=on";};
-#else
- chosen {};
+ bootargs = "console=ttyAMA0 earlycon=pl011,0x1c090000 root=/dev/vda ip=on";
#endif
+ };
aliases {
serial0 = &v2m_serial0;
--
2.43.0