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authorStefan Roese <sr@denx.de>2009-05-12 14:29:39 +0200
committerWolfgang Denk <wd@denx.de>2009-06-12 20:45:47 +0200
commit0a57265533c412adf6024f4b4955141f4346b2b9 (patch)
tree011c00b2cfb16aa1cb9e01f2938d7664209c4f2c /include/linux
parent55e0ed6078b10b0d425b6a0677f38a015c277df6 (diff)
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mtd: Add MTD concat support to concatenate multiple MTD NOR devices
This patch adds concatenation support to the U-Boot MTD infrastructure. By enabling CONFIG_MTD_CONCAT this MTD CFI wrapper will concatenate all found NOR devices into one single MTD device. This can be used by e.g by UBI to access a partition that spans over multiple NOR chips. Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/mtd/compat.h12
-rw-r--r--include/linux/mtd/concat.h21
2 files changed, 29 insertions, 4 deletions
diff --git a/include/linux/mtd/compat.h b/include/linux/mtd/compat.h
index 9036b74..f0c8464 100644
--- a/include/linux/mtd/compat.h
+++ b/include/linux/mtd/compat.h
@@ -19,11 +19,15 @@
#define kmalloc(size, flags) malloc(size)
#define kzalloc(size, flags) calloc(size, 1)
-#define vmalloc(size) malloc(size)
-#define kfree(ptr) free(ptr)
-#define vfree(ptr) free(ptr)
+#define vmalloc(size) malloc(size)
+#define kfree(ptr) free(ptr)
+#define vfree(ptr) free(ptr)
-#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+#define DECLARE_WAITQUEUE(...) do { } while (0)
+#define add_wait_queue(...) do { } while (0)
+#define remove_wait_queue(...) do { } while (0)
+
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
/*
* ..and if you can't take the strict
diff --git a/include/linux/mtd/concat.h b/include/linux/mtd/concat.h
new file mode 100644
index 0000000..e80c674
--- /dev/null
+++ b/include/linux/mtd/concat.h
@@ -0,0 +1,21 @@
+/*
+ * MTD device concatenation layer definitions
+ *
+ * (C) 2002 Robert Kaiser <rkaiser@sysgo.de>
+ *
+ * This code is GPL
+ */
+
+#ifndef MTD_CONCAT_H
+#define MTD_CONCAT_H
+
+
+struct mtd_info *mtd_concat_create(
+ struct mtd_info *subdev[], /* subdevices to concatenate */
+ int num_devs, /* number of subdevices */
+ const char *name); /* name for the new device */
+
+void mtd_concat_destroy(struct mtd_info *mtd);
+
+#endif
+