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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 13/37] of: Add initrd helper
Date: Mon,  4 Mar 2013 10:53:16 +0100	[thread overview]
Message-ID: <1362390820-10333-14-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1362390820-10333-1-git-send-email-s.hauer@pengutronix.de>

Add a helper to set the initrd properties in the unflattened tree.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/of/base.c |   39 +++++++++++++++++++++++++++++++++++++++
 include/of.h      |    3 +++
 2 files changed, 42 insertions(+)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 721db29..4dbe11e 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1201,3 +1201,42 @@ int of_device_is_stdout_path(struct device_d *dev)
 
 	return 0;
 }
+
+/**
+ * of_add_initrd - add initrd properties to the devicetree
+ * @root - the root node of the tree
+ * @start - physical start address of the initrd image
+ * @end - physical end address of the initrd image
+ *
+ * Add initrd properties to the devicetree, or, if end is 0,
+ * delete them.
+ */
+int of_add_initrd(struct device_node *root, resource_size_t start,
+		resource_size_t end)
+{
+	struct device_node *chosen;
+	__be32 buf[2];
+
+	chosen = of_find_node_by_path(root, "/chosen");
+	if (!chosen)
+		return -EINVAL;
+
+	if (end) {
+		of_write_number(buf, start, 2);
+		of_set_property(chosen, "linux,initrd-start", buf, 8, 1);
+		of_write_number(buf, end, 2);
+		of_set_property(chosen, "linux,initrd-end", buf, 8, 1);
+	} else {
+		struct property *pp;
+
+		pp = of_find_property(chosen, "linux,initrd-start");
+		if (pp)
+			of_delete_property(pp);
+
+		pp = of_find_property(chosen, "linux,initrd-end");
+		if (pp)
+			of_delete_property(pp);
+	}
+
+	return 0;
+}
diff --git a/include/of.h b/include/of.h
index 6154490..1562f4e 100644
--- a/include/of.h
+++ b/include/of.h
@@ -68,6 +68,9 @@ struct driver_d;
 
 int of_match(struct device_d *dev, struct driver_d *drv);
 
+int of_add_initrd(struct device_node *root, resource_size_t start,
+		resource_size_t end);
+
 struct property *of_find_property(const struct device_node *node, const char *name);
 
 struct device_node *of_find_node_by_path(struct device_node *root, const char *path);
-- 
1.7.10.4


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  parent reply	other threads:[~2013-03-04  9:53 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-04  9:53 [PATCH v2] remove libfdt Sascha Hauer
2013-03-04  9:53 ` [PATCH 01/37] of: unflatten: allocate root node explicitly Sascha Hauer
2013-03-04  9:53 ` [PATCH 02/37] of: export of_find_child Sascha Hauer
2013-03-04  9:53 ` [PATCH 03/37] of: removed unused variables Sascha Hauer
2013-03-04  9:53 ` [PATCH 04/37] of: Let of_find_node_by_path iterate over tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 05/37] of: remove allnodes list Sascha Hauer
2013-03-04  9:53 ` [PATCH 06/37] ARM bootm: Use of_get_fixed_tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 07/37] of: Add of_set_property and of_create_node Sascha Hauer
2013-03-04  9:53 ` [PATCH 08/37] of_node command: use of_create_node Sascha Hauer
2013-03-04  9:53 ` [PATCH 09/37] of: Add missing prototype for of_device_is_compatible Sascha Hauer
2013-03-04  9:53 ` [PATCH 10/37] of: let of_unflatten_dtb return the unflattened tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 11/37] of: Add root node argument to of_find_node_by_path Sascha Hauer
2013-03-04  9:53 ` [PATCH 12/37] of: Add of_write_number helper Sascha Hauer
2013-03-04  9:53 ` Sascha Hauer [this message]
2013-03-04 12:01   ` [PATCH 13/37] of: Add initrd helper Alexander Aring
2013-03-04  9:53 ` [PATCH 14/37] of: make unflatten independent of libfdt Sascha Hauer
2013-03-04  9:53 ` [PATCH 15/37] of: make flatten " Sascha Hauer
2013-03-04  9:53 ` [PATCH 16/37] of/fdt: use optimized endianess conversion Sascha Hauer
2013-03-04  9:53 ` [PATCH 17/37] oftree command: Use of_print_nodes Sascha Hauer
2013-03-04  9:53 ` [PATCH 18/37] of: move OFTREE Kconfig option to drivers/of/ Sascha Hauer
2013-03-04  9:53 ` [PATCH 19/37] of: make OFDEVICE a user selectable option Sascha Hauer
2013-03-04  9:53 ` [PATCH 20/37] oftree command: retire CMD_OFTREE_PROBE Kconfig option Sascha Hauer
2013-03-04  9:53 ` [PATCH 21/37] of: move oftree Kconfig to the top of the drivers menu Sascha Hauer
2013-03-04  9:53 ` [PATCH 22/37] of: Pass barebox internal format devicetree to of_get_fixed_tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 23/37] bootm: Use of_print_nodes instead of fdt_print Sascha Hauer
2013-03-04  9:53 ` [PATCH 24/37] of: move flat devicetree functions to separate file Sascha Hauer
2013-03-04  9:53 ` [PATCH 25/37] of: Add of property write functions for u32 Sascha Hauer
2013-03-04  9:53 ` [PATCH 26/37] of: make value of property in of_new_property optional Sascha Hauer
2013-03-04  9:53 ` [PATCH 27/37] of: Add missing prototype for size/address counting functions Sascha Hauer
2013-03-04  9:53 ` [PATCH 28/37] of: fixup unflattened devicetree Sascha Hauer
2013-03-04  9:53 ` [PATCH 29/37] of_* commands: print usage when insufficient arguments are given Sascha Hauer
2013-03-04  9:53 ` [PATCH 30/37] of_property command: Fix crash with empty property value Sascha Hauer
2013-03-04  9:53 ` [PATCH 31/37] ARM: bootm: rework concatenated oftree Sascha Hauer
2013-03-04  9:53 ` [PATCH 32/37] of: memory: Use of_write_number Sascha Hauer
2013-03-04  9:53 ` [PATCH 33/37] of: Add reservemap handling Sascha Hauer
2013-03-04  9:53 ` [PATCH 34/37] bootm: Pass unflattened devicetree to handlers Sascha Hauer
2013-03-04  9:53 ` [PATCH 35/37] ARM bootm: Switch initrd support to unflattened tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 36/37] of: remove unused libfdt Sascha Hauer
2013-03-04  9:53 ` [PATCH 37/37] of: make locally used functions static Sascha Hauer

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