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u-boot-iot2050: Match kernel dts for bootefi issue #576

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merged 2 commits into from
Jan 20, 2025
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u-boot-iot2050: Match kernel dts for bootefi issue #576

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31e9324
u-boot-iot2050: Match kernel dts for bootefi issue
huaqianli Jan 16, 2025
293f865
ci: Temporarily bypoass the pipeline issue
huaqianli Jan 20, 2025
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6 changes: 3 additions & 3 deletions .github/workflows/main.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ concurrency:
jobs:
debian-example-image:
name: Debian example image
runs-on: ubuntu-latest
runs-on: ubuntu-22.04
steps:
- name: Checkout
uses: actions/checkout@v4
Expand All @@ -27,7 +27,7 @@ jobs:

debian-swupdate-image:
name: Debian secure boot SWUpdate image
runs-on: ubuntu-latest
runs-on: ubuntu-22.04
steps:
- name: Checkout
uses: actions/checkout@v4
Expand All @@ -50,7 +50,7 @@ jobs:

bootloaders:
name: Bootloaders
runs-on: ubuntu-latest
runs-on: ubuntu-22.04
steps:
- name: Checkout
uses: actions/checkout@v4
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49 changes: 49 additions & 0 deletions recipes-bsp/u-boot/files/0018-arm-dts-iot2050-Enforce-DMA-isolation-for-devices-be.patch
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@@ -0,0 +1,49 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Li Hua Qian <[email protected]>
Date: Thu, 16 Jan 2025 17:48:28 +0800
Subject: [PATCH] arm: dts: iot2050: Enforce DMA isolation for devices behind
PCI RC

Reserve a 64M memory region below the top of 1G RAM (smallest RAM size
across the series, space left for firmware carve-outs) and ensure that
all PCI devices do their DMA only inside that region. This is configured
via a restricted-dma-pool and enforced with the help of the first PVU.

- The restricted-dma-pool is overlaid by U-Boot.
- U-Boot DTS path:
arch/arm/dts/k3-am6548-iot2050-advanced-dma-isolation-overlay.dts

Signed-off-by: Li Hua Qian <[email protected]>
---
arch/arm/dts/k3-am65-iot2050-common.dtsi | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)

diff --git a/arch/arm/dts/k3-am65-iot2050-common.dtsi b/arch/arm/dts/k3-am65-iot2050-common.dtsi
index f4f6aeba2586..85911fad2941 100644
--- a/arch/arm/dts/k3-am65-iot2050-common.dtsi
+++ b/arch/arm/dts/k3-am65-iot2050-common.dtsi
@@ -604,3 +604,24 @@
/* lock-step mode not supported on iot2050 boards */
ti,cluster-mode = <0>;
};
+
+&main_navss {
+ ti_pvu0: ti-pvu@30f80000 {
+ compatible = "ti,am654-pvu";
+ reg = <0 0x30f80000 0 0x1000>,
+ <0 0x36000000 0 0x100000>;
+ reg-names = "cfg", "tlbif";
+ interrupts-extended = <&intr_main_navss 390>;
+ interrupt-names = "pvu";
+ };
+
+ ti_pvu1: ti-pvu@30f81000 {
+ compatible = "ti,am654-pvu";
+ reg = <0 0x30f81000 0 0x1000>,
+ <0 0x36100000 0 0x100000>;
+ reg-names = "cfg", "tlbif";
+ interrupts-extended = <&intr_main_navss 389>;
+ interrupt-names = "pvu";
+ status = "disabled";
+ };
+};