From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 11/18] overlay: Add of_overlay_apply_file()
Date: Thu, 24 Jun 2021 10:52:16 +0200 [thread overview]
Message-ID: <20210624085223.14616-12-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20210624085223.14616-1-s.hauer@pengutronix.de>
A shortcut to of_overlay_apply_tree() which takes a filename rather than
an unflattened device tree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/of/overlay.c | 38 ++++++++++++++++++++++++++++++++++++++
include/of.h | 7 +++++++
2 files changed, 45 insertions(+)
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index 8f4ee3f0a2..f238b39ff1 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -11,6 +11,11 @@
#include <common.h>
#include <of.h>
#include <errno.h>
+#include <globalvar.h>
+#include <magicvar.h>
+#include <string.h>
+#include <libfile.h>
+#include <fs.h>
static struct device_node *find_target(struct device_node *root,
struct device_node *fragment)
@@ -191,6 +196,39 @@ int of_overlay_apply_tree(struct device_node *root,
return err;
}
+int of_overlay_apply_file(struct device_node *root, const char *filename)
+{
+ void *fdt;
+ struct device_node *ovl;
+ size_t size;
+ int ret;
+
+ ret = read_file_2(filename, &size, &fdt, FILESIZE_MAX);
+ if (ret)
+ return ret;
+
+ ovl = of_unflatten_dtb(fdt, size);
+
+ free(fdt);
+
+ if (IS_ERR(ovl)) {
+ pr_err("Failed to unflatten %s: %pe\n", filename, ovl);
+ return PTR_ERR(ovl);
+ }
+
+ ret = of_overlay_apply_tree(root, ovl);
+ if (ret == -ENODEV)
+ pr_debug("Not applied %s (not compatible)\n", filename);
+ else if (ret)
+ pr_err("Cannot apply %s: %s\n", filename, strerror(-ret));
+ else
+ pr_info("Applied %s\n", filename);
+
+ of_delete_node(ovl);
+
+ return ret;
+}
+
static int of_overlay_fixup(struct device_node *root, void *data)
{
struct device_node *overlay = data;
diff --git a/include/of.h b/include/of.h
index b22996901f..9213d4165b 100644
--- a/include/of.h
+++ b/include/of.h
@@ -1027,6 +1027,7 @@ struct device_node *of_resolve_phandles(struct device_node *root,
const struct device_node *overlay);
int of_overlay_apply_tree(struct device_node *root,
struct device_node *overlay);
+int of_overlay_apply_file(struct device_node *root, const char *filename);
int of_register_overlay(struct device_node *overlay);
int of_process_overlay(struct device_node *root,
struct device_node *overlay,
@@ -1048,6 +1049,12 @@ static inline int of_overlay_apply_tree(struct device_node *root,
return -ENOSYS;
}
+static inline int of_overlay_apply_file(struct device_node *root,
+ const char *filename)
+{
+ return -ENOSYS;
+}
+
static inline int of_register_overlay(struct device_node *overlay)
{
return -ENOSYS;
--
2.29.2
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next prev parent reply other threads:[~2021-06-24 8:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 8:52 [PATCH v3 00/18] Apply device tree overlays to kernel tree Sascha Hauer
2021-06-24 8:52 ` [PATCH 01/18] of: of_copy_node(): Copy phandles as well Sascha Hauer
2021-06-24 8:52 ` [PATCH 02/18] of: Add function to duplicate a device tree Sascha Hauer
2021-06-24 8:52 ` [PATCH 03/18] fdt: Check blob size during unflattening Sascha Hauer
2021-06-24 8:52 ` [PATCH 04/18] firmware: make device_node argument non const Sascha Hauer
2021-06-24 8:52 ` [PATCH 05/18] libbb: Add find_path function Sascha Hauer
2021-06-24 8:52 ` [PATCH 06/18] firmware: consolidate ifdefs Sascha Hauer
2021-06-24 8:52 ` [PATCH 07/18] firmware: Add search path Sascha Hauer
2021-06-24 8:52 ` [PATCH 08/18] firmware: Fix device_node matching Sascha Hauer
2021-06-24 8:52 ` [PATCH 09/18] firmware: recognize by reproducible name Sascha Hauer
2021-06-24 8:52 ` [PATCH 10/18] blspec: Set firmware searchpath Sascha Hauer
2021-06-24 8:52 ` Sascha Hauer [this message]
2021-06-24 8:52 ` [PATCH 12/18] firmware: Load from global search path Sascha Hauer
2021-06-24 8:52 ` [PATCH 13/18] blspec: Rework firmware load Sascha Hauer
2021-06-24 8:52 ` [PATCH 14/18] overlay: Add filters to choose which overlays to apply Sascha Hauer
2021-06-28 18:58 ` Michael Riesch
2021-06-28 20:13 ` Sascha Hauer
2021-06-24 8:52 ` [PATCH 15/18] blspec: Apply overlays from rootfs Sascha Hauer
2021-06-24 8:52 ` [PATCH 16/18] doc: devicetree: Refer to internal device tree also as live tree Sascha Hauer
2021-06-24 8:52 ` [PATCH 17/18] Documentation: Add documentation for device tree overlays Sascha Hauer
2021-06-24 8:52 ` [PATCH 18/18] of_firmware: Fix handling of firmware-name property Sascha Hauer
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