[PATCH 11/12] introduce generic memory bank handling

[Sascha Hauer]

On arm we have the concept of memory banks which can
be registered and iterated over. This is useful for
other architectures aswell, so add some generic infrastructure
for this.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 common/memory.c  |   18 ++++++++++++++++++
 include/memory.h |   15 +++++++++++++++
 2 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/common/memory.c b/common/memory.c
index 8f4a768..4d59f15 100644
--- a/common/memory.c
+++ b/common/memory.c
@@ -21,6 +21,7 @@
  */
 
 #include <common.h>
+#include <memory.h>
 
 /*
  * Begin and End of memory area for malloc(), and current "brk"
@@ -69,3 +70,20 @@ void *sbrk(ptrdiff_t increment)
 
 	return old;
 }
+
+LIST_HEAD(memory_banks);
+
+void barebox_add_memory_bank(const char *name, resource_size_t start,
+				    resource_size_t size)
+{
+	struct memory_bank *bank = xzalloc(sizeof(*bank));
+	struct device_d *dev;
+
+	dev = add_mem_device(name, start, size, IORESOURCE_MEM_WRITEABLE);
+
+	bank->dev = dev;
+	bank->start = start;
+	bank->size = size;
+
+	list_add_tail(&bank->list, &memory_banks);
+}
diff --git a/include/memory.h b/include/memory.h
index 67b19d7..cb185af 100644
--- a/include/memory.h
+++ b/include/memory.h
@@ -2,9 +2,24 @@
 #define __MEM_MALLOC_H
 
 #include <linux/types.h>
+#include <linux/list.h>
 
 void mem_malloc_init(void *start, void *end);
 ulong mem_malloc_start(void);
 ulong mem_malloc_end(void);
 
+struct memory_bank {
+	struct list_head list;
+	struct device_d *dev;
+	unsigned long start;
+	unsigned long size;
+};
+
+extern struct list_head memory_banks;
+
+void barebox_add_memory_bank(const char *name, resource_size_t start,
+				    resource_size_t size);
+
+#define for_each_memory_bank(mem)	list_for_each_entry(mem, &memory_banks, list)
+
 #endif
-- 
1.7.6.3