uboot:scripts: Change slot names to match bootselect names

Historically, we use the names "alternative", "regular" and "regularB"
to name the three operating systems on the boards. The bootselect tool
also sets these names in the U-Boot ENV. Change the boot script to align
with these names, too.

recipes-bsp/u-boot/files/boot.script

@@ -53,10 +53,10 @@ fi
 # Regular Boot
 ##########################################
 
-test -n "${BOOT_ORDER}" || setenv BOOT_ORDER "recover A B"
-test -n "${BOOT_recover_LEFT}" || setenv BOOT_recover_LEFT 3
-test -n "${BOOT_A_LEFT}" || setenv BOOT_A_LEFT 3
-test -n "${BOOT_B_LEFT}" || setenv BOOT_B_LEFT 3
+test -n "${BOOT_ORDER}" || setenv BOOT_ORDER "alternative regular regularB"
+test -n "${BOOT_alternative_LEFT}" || setenv BOOT_alternative_LEFT 3
+test -n "${BOOT_regular_LEFT}" || setenv BOOT_regular_LEFT 3
+test -n "${BOOT_regularB_LEFT}" || setenv BOOT_regularB_LEFT 3
 
 setenv ramdisk
 setenv bootargs
@@ -66,19 +66,19 @@ setenv TMP_BOOT_ORDER ${BOOT_ORDER}
 seco_ne bootselect
 
 if test "${bootmode_gpio}" = "alternative"; then
-    setenv TMP_BOOT_ORDER "recover A B"
+    setenv TMP_BOOT_ORDER "alternative regular regularB"
 fi
 
 for BOOT_SLOT in "${TMP_BOOT_ORDER}"; do
     if test "x${bootargs}" != "x"; then
         # Skip remaining slots
-    elif test "x${BOOT_SLOT}" = "xrecover"; then
-        if test 0x${BOOT_recover_LEFT} -gt 0; then
-            echo "Found valid slot recover, ${BOOT_recover_LEFT} attempts remaining"
+    elif test "x${BOOT_SLOT}" = "xalternative"; then
+        if test 0x${BOOT_alternative_LEFT} -gt 0; then
+            echo "Found valid slot alternative, ${BOOT_alternative_LEFT} attempts remaining"
             # @TODO: Reset the BOOT_LEFT variable from
             # the OS via a Systemd service unit and reactivate
             # the boot counter here (also for slots A and B).
-            #setexpr BOOT_recover_LEFT ${BOOT_recover_LEFT} - 1
+            #setexpr BOOT_alternative_LEFT ${BOOT_alternative_LEFT} - 1
 
             setenv ramdisk "-"
 
@@ -87,12 +87,12 @@ for BOOT_SLOT in "${TMP_BOOT_ORDER}"; do
             setenv ramdisk "${ramdisk_addr_r}:${filesize}"
             fatload mmc 0:3 ${fdt_addr_r} ${fdtfile}
 
-            setenv bootargs "${default_bootargs} root=/dev/mmcblk0p3 rauc.slot=recover"
+            setenv bootargs "${default_bootargs} root=/dev/mmcblk0p3 rauc.slot=alternative"
         fi
-    elif test "x${BOOT_SLOT}" = "xA"; then
-        if test 0x${BOOT_A_LEFT} -gt 0; then
-            echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
-            #setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
+    elif test "x${BOOT_SLOT}" = "xregular"; then
+        if test 0x${BOOT_regular_LEFT} -gt 0; then
+            echo "Found valid slot regular, ${BOOT_regular_LEFT} attempts remaining"
+            #setexpr BOOT_regular_LEFT ${BOOT_regular_LEFT} - 1
 
             ${storage} dev ${storage_dev}
             part start ${storage} ${storage_dev} kernel kernel_part_addr
@@ -101,12 +101,12 @@ for BOOT_SLOT in "${TMP_BOOT_ORDER}"; do
 
             env exists boot_conf || setenv boot_conf "${fdt_boot_conf}"
 
-            setenv bootargs "${default_bootargs} root=PARTLABEL=ROOTFS rootwait rauc.slot=A"
+            setenv bootargs "${default_bootargs} root=PARTLABEL=ROOTFS rootwait rauc.slot=regular"
         fi
-    elif test "x${BOOT_SLOT}" = "xB"; then
-        if test 0x${BOOT_B_LEFT} -gt 0; then
-            echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
-            #setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
+    elif test "x${BOOT_SLOT}" = "xregularB"; then
+        if test 0x${BOOT_regularB_LEFT} -gt 0; then
+            echo "Found valid slot regularB, ${BOOT_regularB_LEFT} attempts remaining"
+            #setexpr BOOT_regularB_LEFT ${BOOT_regularB_LEFT} - 1
 
             # @TODO: Load artefacts and set bootargs for B
         fi
@@ -154,9 +154,9 @@ if test -n "${bootargs}"; then
     saveenv
 else
     echo "No valid slot found, resetting attempts to 3"
-    setenv BOOT_recover_LEFT 3
-    setenv BOOT_A_LEFT 3
-    setenv BOOT_B_LEFT 3
+    setenv BOOT_alternative_LEFT 3
+    setenv BOOT_regular_LEFT 3
+    setenv BOOT_regularB_LEFT 3
     saveenv
     reset
 fi