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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 33/37] of: Add reservemap handling
Date: Mon,  4 Mar 2013 10:53:36 +0100	[thread overview]
Message-ID: <1362390820-10333-34-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1362390820-10333-1-git-send-email-s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/of/dtb.c |   65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/of.h     |   10 +++++++++
 2 files changed, 75 insertions(+)

diff --git a/drivers/of/dtb.c b/drivers/of/dtb.c
index 3867128..856b591 100644
--- a/drivers/of/dtb.c
+++ b/drivers/of/dtb.c
@@ -399,3 +399,68 @@ out_free:
 
 	return NULL;
 }
+
+/*
+ * The last entry is the zeroed sentinel, the one before is
+ * reserved for the reservemap entry for the dtb itself.
+ */
+#define OF_MAX_FREE_RESERVE_MAP	(OF_MAX_RESERVE_MAP - 2)
+
+static struct of_reserve_map of_reserve_map;
+
+int of_add_reserve_entry(resource_size_t start, resource_size_t end)
+{
+	int e = of_reserve_map.num_entries;
+
+	if (e >= OF_MAX_FREE_RESERVE_MAP)
+		return -ENOSPC;
+
+	of_reserve_map.start[e] = start;
+	of_reserve_map.end[e] = end;
+	of_reserve_map.num_entries++;
+
+	return 0;
+}
+
+struct of_reserve_map *of_get_reserve_map(void)
+{
+	return &of_reserve_map;
+}
+
+void of_clean_reserve_map(void)
+{
+	of_reserve_map.num_entries = 0;
+}
+
+/**
+ * fdt_add_reserve_map - Add reserve map entries to a devicetree binary
+ * @__fdt: The devicetree blob
+ *
+ * This adds the reservemap entries previously colllected in
+ * of_add_reserve_entry() to a devicetree binary blob. This also
+ * adds the devicetree itself to the reserved list, so after calling
+ * this function the tree should not be relocated anymore.
+ */
+void fdt_add_reserve_map(void *__fdt)
+{
+	struct fdt_header *fdt = __fdt;
+	struct of_reserve_map *res = &of_reserve_map;
+	struct fdt_reserve_entry *fdt_res =
+		__fdt + be32_to_cpu(fdt->off_mem_rsvmap);
+	int i;
+
+	for (i = 0; i < res->num_entries; i++) {
+		of_write_number(&fdt_res->address, res->start[i], 2);
+		of_write_number(&fdt_res->size, res->end[i] - res->start[i] + 1,
+				2);
+		fdt_res++;
+	}
+
+	of_write_number(&fdt_res->address, (unsigned long)__fdt, 2);
+	of_write_number(&fdt_res->size, (unsigned long)__fdt +
+			be32_to_cpu(fdt->totalsize), 2);
+	fdt_res++;
+
+	of_write_number(&fdt_res->address, 0, 2);
+	of_write_number(&fdt_res->size, 0, 2);
+}
diff --git a/include/of.h b/include/of.h
index ef6a4ce..1535694 100644
--- a/include/of.h
+++ b/include/of.h
@@ -61,6 +61,16 @@ struct of_device_id {
 };
 
 #define OF_MAX_RESERVE_MAP	16
+struct of_reserve_map {
+	uint64_t start[OF_MAX_RESERVE_MAP];
+	uint64_t end[OF_MAX_RESERVE_MAP];
+	int num_entries;
+};
+
+int of_add_reserve_entry(resource_size_t start, resource_size_t end);
+struct of_reserve_map *of_get_reserve_map(void);
+void of_clean_reserve_map(void);
+void fdt_add_reserve_map(void *fdt);
 
 struct driver_d;
 
-- 
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 ` [PATCH 13/37] of: Add initrd helper Sascha Hauer
2013-03-04 12:01   ` 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 ` Sascha Hauer [this message]
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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