[OE-core] [PATCH] meta: introduce UBOOT_MKIMAGE_KERNEL_TYPE

[liu.ming50@gmail.com]

From: Ming Liu <liu.ming50@gmail.com>

Sometimes an end user might want to choose another kernel type argument
for uboot-mkimage other than "kernel", for instance: "kernel_noload".

Let's introduce a variable UBOOT_MKIMAGE_KERNEL_TYPE to support that,
and it could be used by BSP layers as well.

Signed-off-by: Ming Liu <liu.ming50@gmail.com>
---
 meta/classes/kernel-fitimage.bbclass     | 2 +-
 meta/classes/kernel-uboot.bbclass        | 3 +++
 meta/classes/kernel-uimage.bbclass       | 2 +-
 meta/lib/oeqa/selftest/cases/fitimage.py | 3 ++-
 4 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 7e09b075ff..2112ae4cfa 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass
@@ -148,7 +148,7 @@ fitimage_emit_section_kernel() {
                 kernel-$2 {
                         description = "Linux kernel";
                         data = /incbin/("$3");
-                        type = "kernel";
+                        type = "${UBOOT_MKIMAGE_KERNEL_TYPE}";
                         arch = "${UBOOT_ARCH}";
                         os = "linux";
                         compression = "$4";
diff --git a/meta/classes/kernel-uboot.bbclass b/meta/classes/kernel-uboot.bbclass
index 2facade818..1bc98e042d 100644
--- a/meta/classes/kernel-uboot.bbclass
+++ b/meta/classes/kernel-uboot.bbclass
@@ -2,6 +2,9 @@
 FIT_KERNEL_COMP_ALG ?= "gzip"
 FIT_KERNEL_COMP_ALG_EXTENSION ?= ".gz"
 
+# Kernel image type passed to mkimage (i.e. kernel kernel_noload...)
+UBOOT_MKIMAGE_KERNEL_TYPE ?= "kernel"
+
 uboot_prep_kimage() {
 	if [ -e arch/${ARCH}/boot/compressed/vmlinux ]; then
 		vmlinux_path="arch/${ARCH}/boot/compressed/vmlinux"
diff --git a/meta/classes/kernel-uimage.bbclass b/meta/classes/kernel-uimage.bbclass
index cedb4fa070..e116bf0265 100644
--- a/meta/classes/kernel-uimage.bbclass
+++ b/meta/classes/kernel-uimage.bbclass
@@ -30,6 +30,6 @@ do_uboot_mkimage() {
 			awk '$3=="${UBOOT_ENTRYSYMBOL}" {print "0x"$1;exit}'`
 	fi
 
-	uboot-mkimage -A ${UBOOT_ARCH} -O linux -T kernel -C "${linux_comp}" -a ${UBOOT_LOADADDRESS} -e $ENTRYPOINT -n "${DISTRO_NAME}/${PV}/${MACHINE}" -d linux.bin ${B}/arch/${ARCH}/boot/uImage
+	uboot-mkimage -A ${UBOOT_ARCH} -O ${UBOOT_MKIMAGE_KERNEL_TYPE} -T kernel -C "${linux_comp}" -a ${UBOOT_LOADADDRESS} -e $ENTRYPOINT -n "${DISTRO_NAME}/${PV}/${MACHINE}" -d linux.bin ${B}/arch/${ARCH}/boot/uImage
 	rm -f linux.bin
 }
diff --git a/meta/lib/oeqa/selftest/cases/fitimage.py b/meta/lib/oeqa/selftest/cases/fitimage.py
index e6bfd1257e..7e6479c9ca 100644
--- a/meta/lib/oeqa/selftest/cases/fitimage.py
+++ b/meta/lib/oeqa/selftest/cases/fitimage.py
@@ -763,6 +763,7 @@ FIT_HASH_ALG = "sha256"
 
         kernel_load = str(get_bb_var('UBOOT_LOADADDRESS'))
         kernel_entry = str(get_bb_var('UBOOT_ENTRYPOINT'))
+        kernel_type = str(get_bb_var('UBOOT_MKIMAGE_KERNEL_TYPE'))
         kernel_compression = str(get_bb_var('FIT_KERNEL_COMP_ALG'))
         uboot_arch = str(get_bb_var('UBOOT_ARCH'))
         fit_hash_alg = str(get_bb_var('FIT_HASH_ALG'))
@@ -775,7 +776,7 @@ FIT_HASH_ALG = "sha256"
             'kernel-1 {',
             'description = "Linux kernel";',
             'data = /incbin/("linux.bin");',
-            'type = "kernel";',
+            'type = "' + kernel_type + '";',
             'arch = "' + uboot_arch + '";',
             'os = "linux";',
             'compression = "' + kernel_compression + '";',
-- 
2.25.1