tizen: rpi4: remove hardcoded partition numbers

GPT partition layout already provides names for all partitions, so if
possible, use them instead of the hardcoded numbers in boot script.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: Id35838f9bb11970ab94963947f6140db836944e3

diff --git a/tizen/bootscript/tizen-boot-rpi4.scr b/tizen/bootscript/tizen-boot-rpi4.scr
index 78dfb9e..bc34f03 100644 (file)
--- a/tizen/bootscript/tizen-boot-rpi4.scr
+++ b/tizen/bootscript/tizen-boot-rpi4.scr
@@ -1,5 +1,8 @@
 # U-boot script for tizen RPI4
 
+setenv legacy_ramdisk_part     0x7
+setenv legacy_recovery_part    0x8
+
 if test "${target}" = "mmc0"; then;
        setenv bootdev mmc
 fi
@@ -8,55 +11,39 @@ if test "${target}" = "usb0"; then;
        setenv opts "${opts} rootdelay=2"
 fi
 
+# find 'inform' partition or use ${mmcinformpart} fallback
+part number $bootdev $mmcbootdev "inform" res
+if test -n "${res}"; then;
+       setenv mmcinformpart ${res}
+fi
+
+# set sane defaults
+setenv partition_name "ramdisk"
+setenv partition_ab "a"
+setenv partition_fallback ${legacy_ramdisk_part}
+
 if test -e $bootdev $mmcbootdev:$mmcinformpart $slotfile; then;
        ext4load $bootdev $mmcbootdev:$mmcinformpart $slot_addr $slotfile;
        if itest.b *${slot_addr} == 0x62; then;
-               setenv ramdiskpart 0xe
-               setenv part 14
-               setenv partition_ab b
-               echo "boot from slot_b";
-       else
-               setenv ramdiskpart 7
-               setenv part 7
-               setenv partition_ab a
-               echo "boot from slot_a";
+               setenv partition_ab "b"
        fi
-else
-       setenv ramdiskpart 7
-       setenv part 7
-       setenv partition_ab a
-       echo "boot from slot_a";
 fi
+echo "boot from slot_${partition_ab}"
 
 if test -e $bootdev $mmcbootdev:$mmcinformpart $rebootparamfile; then;
        ext4load $bootdev $mmcbootdev:$mmcinformpart $rebootparam_addr $rebootparamfile;
        if itest.l *${rebootparam_addr} == ${upgrade_val}; then;
-               if test "${partition_ab}" = "b"; then
-                       setenv ramdiskpart 0xf
-                       setenv part 15
-               else
-                       setenv ramdiskpart 8
-                       setenv part 8
-               fi
-               setenv bootmode fota
+               setenv partition_name "ramdisk-recovery"
+               setenv partition_fallback ${legacy_recovery_part}
+               setenv bootmode "fota"
        elif itest.l *${rebootparam_addr} == ${recovery_val}; then;
-               if test "${partition_ab}" = "b"; then
-                       setenv ramdiskpart 0xf
-                       setenv part 15
-               else
-                       setenv ramdiskpart 8
-                       setenv part 8
-               fi
-               setenv bootmode recovery
+               setenv partition_name "ramdisk-recovery"
+               setenv partition_fallback ${legacy_recovery_part}
+               setenv bootmode "recovery"
        elif itest.l *${rebootparam_addr} == ${download_val}; then;
-               if test "${partition_ab}" = "b"; then
-                       setenv ramdiskpart 0xf
-                       setenv part 15
-               else
-                       setenv ramdiskpart 8
-                       setenv part 8
-               fi
-               setenv bootmode flash
+               setenv partition_name "ramdisk-recovery"
+               setenv partition_fallback ${legacy_recovery_part}
+               setenv bootmode "flash"
        elif itest.l *${rebootparam_addr} == ${nodef_val}; then;
                echo "This reboot parameter is not supported...";
        fi
@@ -64,14 +51,9 @@ fi
 
 # This is for jumping to flash mode on u-boot.
 if test "${bootmode}" = "download"; then;
-       if test "${partition_ab}" = "b"; then
-               setenv ramdiskpart 0xf
-               setenv part 15
-       else
-               setenv ramdiskpart 8
-               setenv part 8
-       fi
-       setenv bootmode flash
+       setenv partition_name "ramdisk-recovery"
+       setenv partition_fallback ${legacy_recovery_part}
+       setenv bootmode "flash"
 fi
 
 if test "${bootmode}" = "flash"; then;
@@ -80,6 +62,14 @@ if test "${bootmode}" = "flash"; then;
        fi
 fi
 
+# find the selected ramdisk variant partition
+part number $bootdev $mmcbootdev "${partition_name}_${partition_ab}" res
+if test -n "${res}"; then;
+       setenv ramdiskpart ${res}
+else
+       setenv ramdiskpart ${partition_fallback}
+fi
+
 # boot from ram0 if there is sbin
 if test -e $bootdev $mmcrootdev:$ramdiskpart sbin/init; then;
        setenv rootdev ram0
@@ -117,8 +107,7 @@ 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";
        if test -e $bootdev $mmcrootdev:$ramdiskpart sbin/init; then;
-               echo "Loading Ramdisk from partition"${part};
-               echo "Environment value of ramdiskpart is" ${ramdiskpart};
+               echo "Loading Ramdisk from partition ${ramdiskpart}";
                $bootdev read $ramdisk_addr_r $ramdisk_start $ramdisk_size;
        fi