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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Sep 2023 01:16:39.2223 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 55283776-035f-4223-5323-08dbae76ec16 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9DA.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB6488 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1693963049773100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Introduce a config option where the user can enable support for adding/remo= ving device tree nodes using a device tree binary overlay. Update SUPPORT.md and CHANGELOG.md to state the Device Tree Overlays suppor= t for Arm. Signed-off-by: Vikram Garhwal Acked-by: Henry Wang Reviewed-by: Michal Orzel Acked-by: Stefano Stabellini --- Changes from v9: Fix style. Changes from v7: Add this feature as "experimental support" in CHANGELOG.md --- --- CHANGELOG.md | 2 ++ SUPPORT.md | 6 ++++++ xen/arch/arm/Kconfig | 5 +++++ 3 files changed, 13 insertions(+) diff --git a/CHANGELOG.md b/CHANGELOG.md index 2516526589..24636b8eaf 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -27,6 +27,8 @@ The format is based on [Keep a Changelog](https://keepach= angelog.com/en/1.0.0/) - On Arm, add suport for Firmware Framework for Arm A-profile (FF-A) Medi= ator (Tech Preview) - Add Intel Hardware P-States (HWP) cpufreq driver. + - On Arm, experimental support for dynamic addition/removal of Xen device= tree + nodes using a device tree overlay binary (.dtbo). =20 ### Removed - On x86, the "pku" command line option has been removed. It has never diff --git a/SUPPORT.md b/SUPPORT.md index 6ce0ec29b0..3461f5cf2f 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -855,6 +855,12 @@ xen/arch/arm/tee/ffa.c for limitations. =20 Status: Supported =20 +### Device Tree Overlays + +Add/Remove device tree nodes using a device tree overlay binary (.dtbo). + + Status, ARM: Experimental + ### ARM: Guest ACPI support =20 Status: Supported diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig index 57bd1d01d7..650aca99ac 100644 --- a/xen/arch/arm/Kconfig +++ b/xen/arch/arm/Kconfig @@ -92,6 +92,11 @@ config HAS_ITS bool "GICv3 ITS MSI controller support (UNSUPPORTED)" if UNSUPPORT= ED depends on GICV3 && !NEW_VGIC && !ARM_32 =20 +config OVERLAY_DTB + bool "DTB overlay support (UNSUPPORTED)" if UNSUPPORTED + help + Dynamic addition/removal of Xen device tree nodes using a dtbo. + config HVM def_bool y =20 --=20 2.17.1