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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2024 03:36:13.2475 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 31330504-1bb6-42a6-e2c3-08dc640fb0c7 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB77.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB7600 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1713930260943100001 Content-Type: text/plain; charset="utf-8" From: Vikram Garhwal Introduce a shell script that runs in the background and calls get_overlay to retrive overlays and add them (or remove them) to Linux device tree (running as a domU). Signed-off-by: Vikram Garhwal Signed-off-by: Stefano Stabellini Signed-off-by: Henry Wang --- tools/helpers/Makefile | 2 +- tools/helpers/get_overlay.sh | 81 ++++++++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+), 1 deletion(-) create mode 100755 tools/helpers/get_overlay.sh diff --git a/tools/helpers/Makefile b/tools/helpers/Makefile index dfe17ef269..2d0558aeb8 100644 --- a/tools/helpers/Makefile +++ b/tools/helpers/Makefile @@ -58,7 +58,6 @@ init-dom0less: $(INIT_DOM0LESS_OBJS) get_overlay: $(SHARE_OVERLAY_OBJS) $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenvchan) $(LDLIBS_libxenstore) $(L= DLIBS_libxenctrl) $(LDLIBS_libxengnttab) $(APPEND_LDFLAGS) =20 - .PHONY: install install: all $(INSTALL_DIR) $(DESTDIR)$(LIBEXEC_BIN) @@ -67,6 +66,7 @@ install: all .PHONY: uninstall uninstall: for i in $(TARGETS); do rm -f $(DESTDIR)$(LIBEXEC_BIN)/$$i; done + $(RM) $(DESTDIR)$(LIBEXEC_BIN)/get_overlay.sh =20 .PHONY: clean clean: diff --git a/tools/helpers/get_overlay.sh b/tools/helpers/get_overlay.sh new file mode 100755 index 0000000000..2e8c6ecefd --- /dev/null +++ b/tools/helpers/get_overlay.sh @@ -0,0 +1,81 @@ +#!/bin/sh + +modprobe xen_gntalloc +modprobe xen_gntdev + +while : +do + overlay_node_name=3D"" + type_overlay=3D"normal" + is_partial_dtb=3D"" + + output=3D`/usr/lib/xen/bin/get_overlay 0` + + if test $? -ne 0 + then + echo error + exit 1 + fi + + if test -z "$output" + then + echo "" + exit 1 + fi + + # output: add overlay-name normal partial + operation=3D`echo $output | cut -d " " -f 1` + overlay_node_name=3D`echo $output | cut -d " " -f 2` + type_overlay=3D`echo $output | cut -d " " -f 3` + is_partial_dtb=3D`echo $output | cut -d " " -f 4` + + if test -z "$operation" || test -z "$overlay_node_name" + then + echo "invalid ops" + exit 1 + fi + + if test $operation =3D "add" + then + echo "Overlay received" + + if test "$type_overlay" =3D "normal" + then + final_path=3D"/sys/kernel/config/device-tree/overlays/$overlay= _node_name" + mkdir -p $final_path + cat overlay.dtbo > $final_path/dtbo + else + # fpga overlay + cp overlay.dtbo lib/firmware/ + mkdir /configfs + mount -t configfs configfs /configfs + cd /configfs/device-tree/overlays/ + + if test "$is_partial_dtb" + then + mkdir partial + echo 1 > /sys/class/fpga_manager/fpga0/flags + echo -n "overlay.dtbo" > /configfs/device-tree/overlays/pa= rtial + else + mkdir full + echo -n "overlay.dtbo" > /configfs/device-tree/overlays/fu= ll + fi + fi + elif test $operation =3D "remove" + then + if test "$type_overlay" =3D "normal" + then + # implement remove + path=3D/sys/kernel/config/device-tree/overlays/$overlay_node_n= ame/dtbo + if ! test -f $path + then + echo "error: path doesn't exist" + exit 1 + fi + rm $path + fi + else + echo "operation unsupported" + exit 1 + fi +done --=20 2.34.1