From: "Tom Rini" <tom.rini@gmail.com>
To: meta-ti@lists.yoctoproject.org
Subject: [PATCHv2] conf: am335x-evm: Add extlinux.conf support
Date: Sat, 12 Jun 2021 09:13:31 -0400 [thread overview]
Message-ID: <20210612131331.13439-1-trini@konsulko.com> (raw)
In-Reply-To: <16875AD11A54340A.8333@lists.yoctoproject.org>
To make use of the "generic distro boot" support in U-Boot, an
extlinux.conf file needs to be generated and reside in the extlinux
directory. The extlinux.conf file will be parsed by U-Boot and the
"append" line will be evaluated and expanded and used entirely as the
bootargs passed to the kernel. Our generated extlinux.conf states
that the kernel image and device trees live one level up (so the root
directory) from it, so populate that location with our kernel and device
trees.
Signed-off-by: Tom Rini <trini@konsulko.com>
---
Changes in v2:
- Elaborate on how this feature works in the commit message.
---
conf/machine/include/ti33x.inc | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/conf/machine/include/ti33x.inc b/conf/machine/include/ti33x.inc
index 6dfda754e9dd..35e057d57497 100644
--- a/conf/machine/include/ti33x.inc
+++ b/conf/machine/include/ti33x.inc
@@ -43,6 +43,15 @@ UBOOT_MACHINE = "am335x_evm_config"
UBOOT_ENTRYPOINT = "0x80008000"
UBOOT_LOADADDRESS = "0x80008000"
+# Generate an extlinux.conf file
+UBOOT_EXTLINUX = "1"
+UBOOT_EXTLINUX_ROOT = "root=PARTUUID=${uuid}"
+UBOOT_EXTLINUX_BOOT_FILES = " \
+ extlinux.conf;extlinux/extlinux.conf \
+ ${KERNEL_IMAGETYPE} \
+ ${KERNEL_DEVICETREE} \
+"
+
SPL_BINARY = "MLO"
UBOOT_SUFFIX = "img"
@@ -61,5 +70,5 @@ TI_PDK_LIMIT_BOARDS = "evmAM335x icev2AM335x iceAMIC110 bbbAM335x skAM335x"
IMAGE_FSTYPES += "tar.xz wic.xz"
WKS_FILE ?= "sdimage-2part.wks"
-IMAGE_BOOT_FILES ?= "${SPL_BINARY} u-boot.${UBOOT_SUFFIX}"
+IMAGE_BOOT_FILES ?= "${SPL_BINARY} u-boot.${UBOOT_SUFFIX} ${UBOOT_EXTLINUX_BOOT_FILES}"
do_image_wic[depends] += "virtual/bootloader:do_deploy"
--
2.17.1
next parent reply other threads:[~2021-06-12 13:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <16875AD11A54340A.8333@lists.yoctoproject.org>
2021-06-12 13:13 ` Tom Rini [this message]
2021-06-13 19:36 ` [meta-ti] [PATCHv2] conf: am335x-evm: Add extlinux.conf support Denys Dmytriyenko
2021-06-14 14:43 ` Nishanth Menon
2021-06-14 16:02 ` Tom Rini
2021-06-14 16:27 ` Nishanth Menon
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