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authorThomas Zimmermann <tzimmermann@suse.de>2025-04-07 14:47:40 +0300
committerThomas Zimmermann <tzimmermann@suse.de>2025-04-07 15:35:48 +0300
commit1afba39f9305fe4061a4e70baa6ebab9d41459da (patch)
tree67e7ed686bd75adc559025870151c4de6d649ced /scripts/extract-fwblobs
parentfbe43810d563a293e3de301141d33caf1f5d5c5a (diff)
parent0af2f6be1b4281385b618cb86ad946eded089ac8 (diff)
downloadlinux-1afba39f9305fe4061a4e70baa6ebab9d41459da.tar.xz
Merge drm/drm-next into drm-misc-next
Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'scripts/extract-fwblobs')
-rwxr-xr-xscripts/extract-fwblobs30
1 files changed, 30 insertions, 0 deletions
diff --git a/scripts/extract-fwblobs b/scripts/extract-fwblobs
new file mode 100755
index 000000000000..53729124e5a0
--- /dev/null
+++ b/scripts/extract-fwblobs
@@ -0,0 +1,30 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# -----------------------------------------------------------------------------
+# Extracts the vmlinux built-in firmware blobs - requires a non-stripped image
+# -----------------------------------------------------------------------------
+
+if [ -z "$1" ]; then
+ echo "Must provide a non-stripped vmlinux as argument"
+ exit 1
+fi
+
+read -r RD_ADDR_HEX RD_OFF_HEX <<< "$( readelf -SW "$1" |\
+grep -w rodata | awk '{print "0x"$5" 0x"$6}' )"
+
+FW_SYMS="$(readelf -sW "$1" |\
+awk -n '/fw_end/ { end=$2 ; print name " 0x" start " 0x" end; } { start=$2; name=$8; }')"
+
+while IFS= read -r entry; do
+ read -r FW_NAME FW_ADDR_ST_HEX FW_ADDR_END_HEX <<< "$entry"
+
+ # Notice kernel prepends _fw_ and appends _bin to the FW name
+ # in rodata; hence we hereby filter that out.
+ FW_NAME=${FW_NAME:4:-4}
+
+ FW_OFFSET="$(printf "%d" $((FW_ADDR_ST_HEX - RD_ADDR_HEX + RD_OFF_HEX)))"
+ FW_SIZE="$(printf "%d" $((FW_ADDR_END_HEX - FW_ADDR_ST_HEX)))"
+
+ dd if="$1" of="./${FW_NAME}" bs="${FW_SIZE}" count=1 iflag=skip_bytes skip="${FW_OFFSET}"
+done <<< "${FW_SYMS}"