1 files changed, 120 insertions, 0 deletions
diff --git a/linux/openslug-kernel-2.6.9/nslu2-part.c b/linux/openslug-kernel-2.6.9/nslu2-part.c
index e69de29bb2..6fbf952e2a 100644
--- a/linux/openslug-kernel-2.6.9/nslu2-part.c
+++ b/linux/openslug-kernel-2.6.9/nslu2-part.c
@@ -0,0 +1,120 @@
+/*
+ * nslu2-part.c
+ *
+ * Maintainers: http://www.nslu2-linux.org/
+ * Initial port: Mark Rakes <mrakes AT mac.com>
+ *
+ * "Parse" the fixed partition table of the Linksys NSLU2 and
+ * produce a Linux partition array to match.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+/* info we know about the NSLU2's flash setup:
+ *
+ * Num	Partition		offset		size
+ * ---	---------		----------	-----------
+ * 0	RedBoot			0x00000000	0x00040000
+ * 1	System Configuration	0x00040000	0x00020000
+ * 2	Kernel			0x00060000	0x00100000
+ * 3	Ramdisk			0x00160000	0x006a0000
+ */
+ #define NSLU2_NUM_FLASH_PARTITIONS	4
+ #define NSLU2_FLASH_PART0_NAME		"RedBoot"
+ #define NSLU2_FLASH_PART0_OFFSET	0x00000000
+ #define NSLU2_FLASH_PART0_SIZE		0x00040000
+ #define NSLU2_FLASH_PART1_NAME		"System Configuration"
+ #define NSLU2_FLASH_PART1_OFFSET	(NSLU2_FLASH_PART0_OFFSET + NSLU2_FLASH_PART0_SIZE)
+ #define NSLU2_FLASH_PART1_SIZE		0x00020000
+ #define NSLU2_FLASH_PART2_NAME		"Kernel"
+ #define NSLU2_FLASH_PART2_OFFSET	(NSLU2_FLASH_PART1_OFFSET + NSLU2_FLASH_PART1_SIZE)
+ #define NSLU2_FLASH_PART2_SIZE		0x00100000
+ #define NSLU2_FLASH_PART3_NAME		"Ramdisk"
+ #define NSLU2_FLASH_PART3_OFFSET	(NSLU2_FLASH_PART2_OFFSET + NSLU2_FLASH_PART2_SIZE)
+ #define NSLU2_FLASH_PART3_SIZE		0x006a0000
+
+static int parse_nslu2_partitions(struct mtd_info *master,
+                             struct mtd_partition **pparts,
+                             unsigned long flash_start)
+{
+	struct mtd_partition *parts;
+	int ret = 0, namelen = 0;
+	char *names;
+
+	namelen = strlen(NSLU2_FLASH_PART0_NAME) +
+		  strlen(NSLU2_FLASH_PART1_NAME) +
+		  strlen(NSLU2_FLASH_PART2_NAME) +
+		  strlen(NSLU2_FLASH_PART3_NAME) +
+		  NSLU2_NUM_FLASH_PARTITIONS; /*4 strings + each terminator */
+
+	parts = kmalloc(sizeof(*parts)*NSLU2_NUM_FLASH_PARTITIONS + namelen, GFP_KERNEL);
+	if (!parts) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	memset(parts, 0, sizeof(*parts)*NSLU2_NUM_FLASH_PARTITIONS + namelen);
+	names = (char *)&parts[NSLU2_NUM_FLASH_PARTITIONS];
+
+	/* RedBoot partition */
+	parts[0].size	= NSLU2_FLASH_PART0_SIZE;
+	parts[0].offset	= NSLU2_FLASH_PART0_OFFSET;
+	parts[0].name	= NSLU2_FLASH_PART0_NAME;
+	parts[0].mask_flags = MTD_WRITEABLE; /* readonly */
+	strcpy(names, NSLU2_FLASH_PART0_NAME);
+	names += strlen(names)+1;
+	/* System Configuration */
+	parts[1].size	= NSLU2_FLASH_PART1_SIZE;
+	parts[1].offset	= NSLU2_FLASH_PART1_OFFSET;
+	parts[1].name	= NSLU2_FLASH_PART1_NAME;
+	parts[1].mask_flags = MTD_WRITEABLE; /* readonly */
+	strcpy(names, NSLU2_FLASH_PART1_NAME);
+	names += strlen(names)+1;
+	/* Kernel */
+	parts[2].size	= NSLU2_FLASH_PART2_SIZE;
+	parts[2].offset	= NSLU2_FLASH_PART2_OFFSET;
+	parts[2].name	= NSLU2_FLASH_PART2_NAME;
+	parts[2].mask_flags = MTD_WRITEABLE; /* readonly */
+	strcpy(names, NSLU2_FLASH_PART2_NAME);
+	names += strlen(names)+1;
+	/* Ramdisk */
+	parts[3].size	= NSLU2_FLASH_PART3_SIZE;
+	parts[3].offset	= NSLU2_FLASH_PART3_OFFSET;
+	parts[3].name	= NSLU2_FLASH_PART3_NAME;
+	parts[3].mask_flags = MTD_WRITEABLE; /* readonly */
+	strcpy(names, NSLU2_FLASH_PART3_NAME);
+	names += strlen(names)+1;
+
+	ret = NSLU2_NUM_FLASH_PARTITIONS;
+	*pparts = parts;
+ out:
+	return ret;
+}
+
+static struct mtd_part_parser nslu2_parser = {
+	.owner = THIS_MODULE,
+	.parse_fn = parse_nslu2_partitions,
+	.name = "NSLU2",
+};
+
+static int __init nslu2_parser_init(void)
+{
+	return register_mtd_parser(&nslu2_parser);
+}
+
+static void __exit nslu2_parser_exit(void)
+{
+	deregister_mtd_parser(&nslu2_parser);
+}
+
+module_init(nslu2_parser_init);
+module_exit(nslu2_parser_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Rakes");
+MODULE_DESCRIPTION("Parsing code for NSLU2 flash tables");