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uboot-mediatek: add patch to allow accessing bootconf from Linux

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Store selected boot configuration in '/chosen' node in device tree, so
it can be accessed by Linux (and used for fine-tuning the FIT partition
parser).

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2022-03-21 23:30:10 +00:00
parent ffa1088f63
commit dfc3ea6810
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package/boot/uboot-mediatek/patches/280-image-fdt-save-name-of-FIT-configuration-in-chosen-node.patch Normal file
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From patchwork Mon Mar 21 23:22:23 2022
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X-Patchwork-Submitter: Daniel Golle <daniel@makrotopia.org>
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Date: Mon, 21 Mar 2022 23:22:23 +0000
From: Daniel Golle <daniel@makrotopia.org>
To: u-boot@lists.denx.de
Cc: Simon Glass <sjg@chromium.org>, Alexandru Gagniuc <mr.nuke.me@gmail.com>,
Patrick Delaunay <patrick.delaunay@foss.st.com>,
Heinrich Schuchardt <xypron.glpk@gmx.de>
Subject: [PATCH] image-fdt: save name of FIT configuration in '/chosen' node
Message-ID: <YjkIr8wmz1XEOVNh@makrotopia.org>
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It can be useful for the OS (Linux) to know which configuration has
been chosen by U-Boot when launching a FIT image.
Store the name of the FIT configuration node used in a new string
attribute called 'bootconf' in the '/chosen' node in device tree.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
boot/image-fdt.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/boot/image-fdt.c b/boot/image-fdt.c
index 692a9ad3e4..4017bc94a6 100644
--- a/boot/image-fdt.c
+++ b/boot/image-fdt.c
@@ -601,6 +601,12 @@ int image_setup_libfdt(bootm_headers_t *images, void *blob,
goto err;
}
+ /* Store name of configuration node as bootconf in /chosen node */
+ if (images->fit_uname_cfg)
+ fdt_find_and_setprop(blob, "/chosen", "bootconf",
+ images->fit_uname_cfg,
+ strlen(images->fit_uname_cfg) + 1, 1);
+
/* Update ethernet nodes */
fdt_fixup_ethernet(blob);
#if CONFIG_IS_ENABLED(CMD_PSTORE)