From: Holger Assmann <h.assmann@pengutronix.de>
To: ptxdist@pengutronix.de
Cc: Holger Assmann <h.assmann@pengutronix.de>
Subject: [ptxdist] [PATCH] kernel-fit: specify kernel compression
Date: Thu, 18 Sep 2025 11:54:01 +0200 [thread overview]
Message-ID: <20250918095401.1271190-1-h.assmann@pengutronix.de> (raw)
On AArch64, the bootloader is responsible for unpacking the kernel image
prior loading it. This has to be specified within the FIT image.
Signed-off-by: Holger Assmann <h.assmann@pengutronix.de>
---
platforms/kernel-fit.in | 6 ++++++
rules/kernel-fit.make | 1 +
rules/post/ptxd_make_image_fit.make | 13 +++++++------
scripts/lib/ptxd_make_fit_image.sh | 2 +-
4 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/platforms/kernel-fit.in b/platforms/kernel-fit.in
index 5b160c57d..3ed69f3f2 100644
--- a/platforms/kernel-fit.in
+++ b/platforms/kernel-fit.in
@@ -17,6 +17,12 @@ menuconfig KERNEL_FIT
if KERNEL_FIT
+config KERNEL_FIT_KERNEL_COMPRESSION
+ string
+ # Keep in sync with KERNEL_IMAGE
+ default "gzip" if KERNEL_IMAGE_Z && (ARCH_ARM64 || ARCH_RISCV)
+ default "none"
+
config KERNEL_FIT_NOLOAD
bool
prompt "Sub-image type 'kernel_noload'"
diff --git a/rules/kernel-fit.make b/rules/kernel-fit.make
index 64e82042f..87250c648 100644
--- a/rules/kernel-fit.make
+++ b/rules/kernel-fit.make
@@ -25,6 +25,7 @@ KERNEL_FIT_SIGN_ROLE := image-kernel-fit
KERNEL_FIT_KEY_NAME_HINT := image-kernel-fit
endif
KERNEL_FIT_KERNEL = $(KERNEL_IMAGE_PATH_y)
+KERNEL_FIT_KERNEL_COMPRESSION := $(call remove_quotes,$(PTXCONF_KERNEL_FIT_KERNEL_COMPRESSION))
ifdef PTXCONF_KERNEL_FIT_INITRAMFS
KERNEL_FIT_INITRAMFS := $(IMAGEDIR)/root.cpio
endif
diff --git a/rules/post/ptxd_make_image_fit.make b/rules/post/ptxd_make_image_fit.make
index 2dd5bce9e..b363f1f13 100644
--- a/rules/post/ptxd_make_image_fit.make
+++ b/rules/post/ptxd_make_image_fit.make
@@ -7,12 +7,13 @@
#
world/image-fit/env/impl = \
- $(call world/image/env, $(1)) \
- $(CODE_SIGNING_ENV) \
- image_sign_role="$(call ptx/escape,$($(1)_SIGN_ROLE))" \
- image_key_name_hint="$(call ptx/escape,$($(1)_KEY_NAME_HINT))" \
- image_kernel="$(call ptx/escape,$($(1)_KERNEL))" \
- image_initramfs="$(call ptx/escape,$($(1)_INITRAMFS))" \
+ $(call world/image/env, $(1)) \
+ $(CODE_SIGNING_ENV) \
+ image_sign_role="$(call ptx/escape,$($(1)_SIGN_ROLE))" \
+ image_key_name_hint="$(call ptx/escape,$($(1)_KEY_NAME_HINT))" \
+ image_kernel="$(call ptx/escape,$($(1)_KERNEL))" \
+ image_kernel_compression="$(call ptx/escape,$($(1)_KERNEL_COMPRESSION))"\
+ image_initramfs="$(call ptx/escape,$($(1)_INITRAMFS))" \
image_dtb="$(call ptx/escape,$($(1)_DTB))"
world/image-fit/env = \
diff --git a/scripts/lib/ptxd_make_fit_image.sh b/scripts/lib/ptxd_make_fit_image.sh
index ad9e5bdd3..f5b7755ea 100644
--- a/scripts/lib/ptxd_make_fit_image.sh
+++ b/scripts/lib/ptxd_make_fit_image.sh
@@ -21,7 +21,7 @@ ptxd_make_image_fit_its() {
data = /incbin/("${image_kernel}");
arch = "$(ptxd_get_ptxconf PTXCONF_ARCH_STRING)";
os = "linux";
- compression = "none";
+ compression = "${image_kernel_compression}";
EOF
if [ -n "$(ptxd_get_ptxconf PTXCONF_KERNEL_FIT_NOLOAD)" ]; then
cat << EOF
--
2.47.3
next reply other threads:[~2025-09-18 9:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-18 9:54 Holger Assmann [this message]
2025-09-22 11:04 ` [ptxdist] [APPLIED] " Michael Olbrich
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