From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Fri, 1 Mar 2024 10:14:52 +0000 (+0100)
Subject: tizen: bootscript: add support for loading initramfs from ramdisk partition
X-Git-Tag: accepted/tizen/unified/20240319.020727~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b5bd17fa11f2778060ed3ace9d2334f05a469a81;p=platform%2Fkernel%2Fu-boot.git

tizen: bootscript: add support for loading initramfs from ramdisk partition

If initrd-style ramdisk is not detected (no filesystem nor /sbin/init
file found), then check ramdisk partition for the gzip magic value and if
detected, load it as initramfs image.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: I17933632635b0c20cf672c2484cd714c3739d760
---

diff --git a/tizen/bootscript/tizen-boot-amlogic-64b.scr b/tizen/bootscript/tizen-boot-amlogic-64b.scr
index 051bd6a8a0..5598128f66 100644
--- a/tizen/bootscript/tizen-boot-amlogic-64b.scr
+++ b/tizen/bootscript/tizen-boot-amlogic-64b.scr
@@ -117,6 +117,13 @@ if load $bootdev $mmcbootdev:$mmcbootpart $tizen_tmp_kernel_addr_r $prefix$kerne
 	if test -e mmc $mmcrootdev:$ramdiskpart sbin/init; then;
 		echo "Loading Ramdisk from partition"${ramdiskpart};
 		mmc read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
+	else
+		# Check for gzip (initramfs) magic
+		mmc read $ramdisk_addr_r $ramdisk_start 1;
+		if itest.w *$ramdisk_addr_r == 0x8b1f; then;
+			echo "Loading initramfs from partition ${ramdiskpart}";
+			mmc read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
+		fi
 	fi
 	booti $tizen_kernel_addr_r $ramdisk_addr_r:$ramdisksize $fdt_addr_r;
 fi
diff --git a/tizen/bootscript/tizen-boot-rpi4.scr b/tizen/bootscript/tizen-boot-rpi4.scr
index d2bb38b4b3..b609554289 100644
--- a/tizen/bootscript/tizen-boot-rpi4.scr
+++ b/tizen/bootscript/tizen-boot-rpi4.scr
@@ -119,6 +119,13 @@ if load $bootdev $mmcbootdev:$mmcbootpart $tizen_kernel_addr_r $prefix$kernel; t
 	if test -e $bootdev $mmcrootdev:$ramdiskpart sbin/init; then;
 		echo "Loading Ramdisk from partition ${ramdiskpart}";
 		$bootdev read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
+	else
+		# Check for gzip (initramfs) magic
+		$bootdev read $ramdisk_addr_r $ramdisk_start 1;
+		if itest.w *$ramdisk_addr_r == 0x8b1f; then;
+			echo "Loading initramfs from partition ${ramdiskpart}";
+			$bootdev read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
+		fi
 	fi
 
 	# use fdt already preloaded by the firmware available at $fdt_addr
diff --git a/tizen/bootscript/tizen-boot-vf2.scr b/tizen/bootscript/tizen-boot-vf2.scr
index a4926c27b0..1db55e14fb 100644
--- a/tizen/bootscript/tizen-boot-vf2.scr
+++ b/tizen/bootscript/tizen-boot-vf2.scr
@@ -148,6 +148,15 @@ if load $devtype $devnum:$distro_bootpart $tizen_kernel_addr_r $prefix$kernel; t
 		echo "Environment value of ramdiskpart is" ${ramdiskpart};
 		$devtype dev $devnum
 		$devtype read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
+	else
+		# Check for gzip (initramfs) magic
+		$devtype dev $devnum;
+		$devtype read $ramdisk_addr_r $ramdisk_start 1;
+		if itest.w *$ramdisk_addr_r == 0x8b1f; then;
+			echo "Loading initramfs from partition ${part}";
+			echo "Environment value of ramdiskpart is" ${ramdiskpart};
+			$devtype read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
+		fi
 	fi
 
 	if test "${board_name}" = "qemu-riscv"; then