[PATCH v2 05/10] binman: Add support for externally provided Linux initrd blob
Alexey Charkov <[email protected]>
| Newsgroups | org.u-boot-project.lists.u-boot |
|---|---|
| Message-ID | <[email protected]> |
Add a simple named Linux ramdisk blob type to binman, activated by the "LINUX_INITRD" make variable. No processing is done on the blob. Signed-off-by: Alexey Charkov <[email protected]> --- Makefile | 1 + tools/binman/etype/linux_initrd.py | 23 +++++++++++++++++++++++ tools/binman/missing-blob-help | 5 +++++ 3 files changed, 29 insertions(+) diff --git a/Makefile b/Makefile index 246efa2c23be..81f49b791e6f 100644 --- a/Makefile +++ b/Makefile @@ -1693,6 +1693,7 @@ cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \ -a atf-bl1-path=${BL1} \ -a atf-bl31-path=${BL31} \ -a linux-kernel-path=${LINUX_KERNEL} \ + -a linux-initrd-path=${LINUX_INITRD} \ -a tee-os-path=${TEE} \ -a ti-dm-path=${TI_DM} \ -a opensbi-path=${OPENSBI} \ diff --git a/tools/binman/etype/linux_initrd.py b/tools/binman/etype/linux_initrd.py new file mode 100644 index 000000000000..9603bc279c26 --- /dev/null +++ b/tools/binman/etype/linux_initrd.py @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright (c) 2026 Flipper FZCO +# +# Entry-type module for a Linux initramfs/initrd binary blob + +from binman.etype.blob_named_by_arg import Entry_blob_named_by_arg + + +class Entry_linux_initrd(Entry_blob_named_by_arg): + """Linux initramfs (initrd) image blob + + Properties / Entry arguments: + - linux-initrd-path: Filename of file to read into entry. This is + typically a compressed cpio archive (e.g. initramfs.cpio.gz). + + This entry allows binman FIT templates to consume an initramfs provided via + a make variable, similar to how the kernel is passed to linux-kernel. It is + optional: when no path is supplied the entry is simply dropped. + """ + + def __init__(self, section, etype, node): + super().__init__(section, etype, node, 'linux-initrd', required=False) + self.external = True diff --git a/tools/binman/missing-blob-help b/tools/binman/missing-blob-help index c8c56e3ad9b5..818060919399 100644 --- a/tools/binman/missing-blob-help +++ b/tools/binman/missing-blob-help @@ -32,6 +32,11 @@ If CONFIG_WDT_K3_RTI_LOAD_FW is enabled, a firmware image is needed for the R5F core(s) to trigger the system reset. One possible source is https://github.com/siemens/k3-rti-wdt. +linux-initrd: +An initramfs to embed in a Falcon mode FIT image, so that the OS can be +started from SPL without a root filesystem being available yet. This is +optional; build with LINUX_INITRD=/path/to/initramfs.cpio.gz to include one. + linux-kernel: A Linux kernel image is required to build a Falcon mode FIT image, which lets SPL start the OS directly instead of U-Boot proper. Build with -- 2.54.0