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 759a284..d8f2e38 100644 (file)
--- 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