[ar71xx] move the trx parser out from the patch

[openwrt-10.03/.git] / target / linux / ar71xx / files / drivers / mtd / wrt160nl_part.c

diff --git a/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c
new file mode 100644 (file)
index 0000000..f31d56c
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c
@@ -0,0 +1,149 @@
+/*
+ * Copyright © 2009 Christian Daniel <cd@maintech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * TRX flash partition table.
+ * Based on ar7 map by Felix Fietkau <nbd@openwrt.org>
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/bootmem.h>
+#include <linux/magic.h>
+
+#define TRX_PARTS      6
+#define TRX_MAGIC      0x30524448
+#define TRX_MAX_OFFSET 3
+
+struct trx_header {
+       uint32_t magic;           /* "HDR0" */
+       uint32_t len;             /* Length of file including header */
+       uint32_t crc32;           /* 32-bit CRC from flag_version to end of file */
+       uint32_t flag_version;    /* 0:15 flags, 16:31 version */
+       uint32_t offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
+};
+
+#define IH_MAGIC       0x27051956      /* Image Magic Number */
+#define IH_NMLEN               32      /* Image Name Length */
+
+struct uimage_header {
+       uint32_t        ih_magic;       /* Image Header Magic Number */
+       uint32_t        ih_hcrc;        /* Image Header CRC Checksum */
+       uint32_t        ih_time;        /* Image Creation Timestamp */
+       uint32_t        ih_size;        /* Image Data Size */
+       uint32_t        ih_load;        /* Data» Load  Address */
+       uint32_t        ih_ep;          /* Entry Point Address */
+       uint32_t        ih_dcrc;        /* Image Data CRC Checksum */
+       uint8_t         ih_os;          /* Operating System */
+       uint8_t         ih_arch;        /* CPU architecture */
+       uint8_t         ih_type;        /* Image Type */
+       uint8_t         ih_comp;        /* Compression Type */
+       uint8_t         ih_name[IH_NMLEN];      /* Image Name */
+};
+
+static struct mtd_partition trx_parts[TRX_PARTS];
+
+static int create_mtd_partitions(struct mtd_info *master,
+                                struct mtd_partition **pparts,
+                                unsigned long origin)
+{
+       uint8_t buf[512];
+       int len;
+       struct trx_header* header;
+       struct uimage_header* uheader;
+       unsigned int kernel_len;
+
+       master->read(master, 4 * master->erasesize, sizeof(buf), &len, buf);
+       if(strncmp(buf, "NL16", 4) == 0) {
+               printk(KERN_INFO "TRX on WRT160NL detected\n");
+
+               header = (struct trx_header*)(buf + 32);
+
+               if(le32_to_cpu(header->magic) != TRX_MAGIC) {
+                       printk(KERN_WARNING "TRX messed up\n");
+                       return 0;
+               }
+
+               uheader = (struct uimage_header*)(buf + 60);
+
+               if(uheader->ih_magic != IH_MAGIC) {
+                       printk(KERN_WARNING "uImage messed up\n");
+                       return 0;
+               }
+
+               kernel_len = uheader->ih_size / master->erasesize;
+               if(uheader->ih_size % master->erasesize)
+                       kernel_len++;
+                       kernel_len++;
+               kernel_len *= master->erasesize;
+
+               trx_parts[0].name = "u-boot";
+               trx_parts[0].offset = 0;
+               trx_parts[0].size = 4 * master->erasesize;
+               trx_parts[0].mask_flags = MTD_WRITEABLE;
+
+               trx_parts[1].name = "kernel";
+               trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size;
+               trx_parts[1].size = kernel_len;
+               trx_parts[1].mask_flags = 0;
+
+               trx_parts[2].name = "rootfs";
+               trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size;
+               trx_parts[2].size = master->size - 6 * master->erasesize - trx_parts[1].size;
+               trx_parts[2].mask_flags = 0;
+
+               trx_parts[3].name = "nvram";
+               trx_parts[3].offset = master->size - 2 * master->erasesize;
+               trx_parts[3].size = master->erasesize;
+               trx_parts[3].mask_flags = 0;
+
+               trx_parts[4].name = "ART";
+               trx_parts[4].offset = master->size - master->erasesize;
+               trx_parts[4].size = master->erasesize;
+               trx_parts[4].mask_flags = MTD_WRITEABLE;
+
+               trx_parts[5].name = "firmware";
+               trx_parts[5].offset = 4 * master->erasesize;
+               trx_parts[5].size = master->size - 6 * master->erasesize;
+               trx_parts[5].mask_flags = 0;
+
+               *pparts = trx_parts;
+
+               return TRX_PARTS;
+       } else {
+               return 0;
+       }
+}
+
+static struct mtd_part_parser trx_parser = {
+       .owner = THIS_MODULE,
+       .parse_fn = create_mtd_partitions,
+       .name = "wrt160nl",
+};
+
+static int __init trx_parser_init(void)
+{
+       return register_mtd_parser(&trx_parser);
+}
+
+module_init(trx_parser_init);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Daniel <cd@maintech.de>");