[rdc] rework board detection

[openwrt.git] / target / linux / rdc / files-2.6.30 / arch / x86 / mach-rdc321x / boards / bifferboard.c

diff --git a/target/linux/rdc/files-2.6.30/arch/x86/mach-rdc321x/boards/bifferboard.c b/target/linux/rdc/files-2.6.30/arch/x86/mach-rdc321x/boards/bifferboard.c
new file mode 100644 (file)
index 0000000..076459e
--- /dev/null
+++ b/target/linux/rdc/files-2.6.30/arch/x86/mach-rdc321x/boards/bifferboard.c
@@ -0,0 +1,82 @@
+/*
+ *  Bifferboard RDC321x platform devices
+ *
+ *  Copyright (C) 2010 bifferos@yahoo.co.uk 
+ *
+ *  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 Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/mtd/physmap.h>
+#include <linux/input.h>
+
+#include <asm/rdc_boards.h>
+
+static int __init parse_bifferboard_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long plat_data)
+{
+       int res;
+       size_t len;
+       struct mtd_partition *rdc_flash_parts;
+       u32 kernel_len;
+       u16 tmp;
+
+       if (master->size == 0x100000)
+               kernel_len = master->size - 0x10000;
+       else {
+               res =  master->read(master, 0x4000 + 1036, 2, &len, (char *) &tmp);
+               if (res)
+                       return res;
+               kernel_len = tmp * master->erasesize;
+       }
+       
+       rdc_flash_parts = kzalloc(sizeof(struct mtd_partition) * 4, GFP_KERNEL);
+       
+       *pparts = rdc_flash_parts;
+
+       rdc_flash_parts[0].name = "biffboot";
+       rdc_flash_parts[0].offset = master->size - 0x10000;
+       rdc_flash_parts[0].size = 0x10000;
+       rdc_flash_parts[0].mask_flags = MTD_WRITEABLE;
+       rdc_flash_parts[1].name = "firmware";
+       rdc_flash_parts[1].offset = 0;
+       rdc_flash_parts[1].size = rdc_flash_parts[0].offset;
+       rdc_flash_parts[2].name = "kernel";
+       rdc_flash_parts[2].offset = 0x00000000;
+       rdc_flash_parts[2].size = kernel_len;
+       
+       if (master->size == 0x100000)
+               return 2;
+
+       rdc_flash_parts[3].name = "rootfs";
+       rdc_flash_parts[3].offset = MTDPART_OFS_APPEND;
+       rdc_flash_parts[3].size = rdc_flash_parts[1].size - rdc_flash_parts[2].size;
+
+       return 4;
+}
+
+struct mtd_part_parser __initdata bifferboard_parser = {
+       .owner = THIS_MODULE,
+       .parse_fn = parse_bifferboard_partitions,
+       .name = "Bifferboard",
+};
+
+static int __init bifferboard_setup(void)
+{
+       return register_mtd_parser(&bifferboard_parser);
+}
+
+arch_initcall(bifferboard_setup);