From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Mon, 22 Nov 2021 11:29:39 +0000 (+0100)
Subject: tizen: rpi4: use fdt already preloaded by the firmware
X-Git-Tag: submit/tizen/20211123.235356^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fheads%2Fold%2Ftizen_20211124;p=platform%2Fkernel%2Fu-boot.git

tizen: rpi4: use fdt already preloaded by the firmware

RPi4's firmware loads dtb and performs some fixups depending on the board
hardware revision. Simply reuse the fdt preloaded by the firmware instead
of loading it again from disk.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: I47e23f61f7b86475922a85fcb464f31d6652f6b6
---

diff --git a/tizen/bootscript/tizen-boot-rpi4.scr b/tizen/bootscript/tizen-boot-rpi4.scr
index 759a284306..d8f2e3806d 100644
--- a/tizen/bootscript/tizen-boot-rpi4.scr
+++ b/tizen/bootscript/tizen-boot-rpi4.scr
@@ -59,7 +59,6 @@ fi
 echo "console: ${console}"
 
 # DT image by model
-setenv fdtfile \"bcm2711-rpi-4-b.dtb\"
 setenv boot_prefixes \"/\"
 
 # To use cmdline for using serial console. /* Normal mode */
@@ -76,12 +75,12 @@ setexpr tizen_kernel_addr_r $ramdisk_addr_r + $ramdisksize
 echo "Searching for kernel in"; for prefix in $boot_prefixes; do
 if load $bootdev $mmcbootdev:$mmcbootpart $tizen_kernel_addr_r $prefix$kernel; then;
 	echo ${bootmode} "boot";
-	load $bootdev $mmcbootdev:$mmcbootpart $fdt_addr $fdtfile;
 	if test -e $bootdev $mmcrootdev:$ramdiskpart sbin/init; then;
 		echo "Loading Ramdisk from partition"${ramdiskpart};
 		$bootdev read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
 	fi
 
+	# use fdt already preloaded by the firmware available at $fdt_addr
 	if test "$kernel" = "zImage"; then;
 		bootz $tizen_kernel_addr_r $ramdisk_addr_r:$ramdisksize $fdt_addr;
 	else