+/*\r
+ * ar525w RDC321x platform devices\r
+ *\r
+ * Copyright (C) 2007-2009 OpenWrt.org\r
+ * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>\r
+ * Copyright (C) 2008-2009 Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>\r
+ *\r
+ * This program is free software; you can redistribute it and/or\r
+ * modify it under the terms of the GNU General Public License\r
+ * as published by the Free Software Foundation; either version 2\r
+ * of the License, or (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program; if not, write to the\r
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,\r
+ * Boston, MA 02110-1301, USA.\r
+ *\r
+ */\r
+\r
+#include <linux/init.h>\r
+#include <linux/mtd/physmap.h>\r
+#include <linux/input.h>\r
+#include <linux/vmalloc.h>\r
+#include <linux/mtd/mtd.h>\r
+\r
+#include <asm/rdc_boards.h>\r
+\r
+struct image_header {\r
+ char magic[4]; /* ASICII: GMTK */\r
+ u32 checksum; /* CRC32 */\r
+ u32 version; /* x.x.x.x */\r
+ u32 kernelsz; /* The size of the kernel image */\r
+ u32 imagesz; /* The length of this image file ( kernel + romfs + this header) */\r
+ u32 pid; /* Product ID */\r
+ u32 fastcksum; /* Partial CRC32 on (First(256), medium(256), last(512)) */\r
+ u32 reserved;\r
+};\r
+\r
+static struct gpio_led ar525w_leds[] = {\r
+ { .name = "rdc321x:dmz", .gpio = 1, .active_low = 1},\r
+};\r
+static struct gpio_button ar525w_btns[] = {\r
+ {\r
+ .gpio = 6,\r
+ .code = BTN_0,\r
+ .desc = "Reset",\r
+ .active_low = 1,\r
+ }\r
+};\r
+\r
+static u32 __initdata crctab[257] = {\r
+ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,\r
+ 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,\r
+ 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,\r
+ 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,\r
+ 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,\r
+ 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,\r
+ 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,\r
+ 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,\r
+ 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,\r
+ 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,\r
+ 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,\r
+ 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,\r
+ 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,\r
+ 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,\r
+ 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,\r
+ 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,\r
+ 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,\r
+ 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,\r
+ 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,\r
+ 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,\r
+ 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,\r
+ 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,\r
+ 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,\r
+ 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,\r
+ 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,\r
+ 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,\r
+ 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,\r
+ 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,\r
+ 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,\r
+ 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,\r
+ 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,\r
+ 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,\r
+ 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,\r
+ 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,\r
+ 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,\r
+ 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,\r
+ 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,\r
+ 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,\r
+ 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,\r
+ 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,\r
+ 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,\r
+ 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,\r
+ 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,\r
+ 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,\r
+ 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,\r
+ 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,\r
+ 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,\r
+ 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,\r
+ 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,\r
+ 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,\r
+ 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,\r
+ 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,\r
+ 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,\r
+ 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,\r
+ 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,\r
+ 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,\r
+ 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,\r
+ 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,\r
+ 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,\r
+ 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,\r
+ 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,\r
+ 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,\r
+ 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,\r
+ 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,\r
+ 0\r
+};\r
+\r
+static u32 __init crc32(u8 * buf, u32 len)\r
+{\r
+ register int i;\r
+ u32 sum;\r
+ register u32 s0;\r
+ s0 = ~0;\r
+ for (i = 0; i < len; i++) {\r
+ s0 = (s0 >> 8) ^ crctab[(u8) (s0 & 0xFF) ^ buf[i]];\r
+ }\r
+ sum = ~s0;\r
+ return sum;\r
+}\r
+\r
+static int __init fixup_ar525w_header(struct mtd_info *master, struct image_header *header)\r
+{\r
+ char *buffer;\r
+ int res;\r
+ u32 bufferlength = header->kernelsz + sizeof(struct image_header);\r
+ u32 len;\r
+ char crcbuf[0x400];\r
+\r
+ printk(KERN_INFO "Fixing up AR525W header, old image size: %u, new image size: %u\n",\r
+ header->imagesz, bufferlength);\r
+\r
+ buffer = vmalloc(bufferlength);\r
+ if (!buffer) {\r
+ printk(KERN_ERR "Can't allocate %u bytes\n", bufferlength);\r
+ return -ENOMEM;\r
+ }\r
+\r
+ res = master->read(master, 0x0, bufferlength, &len, buffer);\r
+ if (res || len != bufferlength)\r
+ goto out;\r
+\r
+ header = (struct image_header *) buffer;\r
+ header->imagesz = bufferlength;\r
+ header->checksum = 0;\r
+ header->fastcksum = 0;\r
+\r
+ memcpy(crcbuf, buffer, 0x100);\r
+ memcpy(crcbuf + 0x100, buffer + (bufferlength >> 1) - ((bufferlength & 0x6) >> 1), 0x100);\r
+ memcpy(crcbuf + 0x200, buffer + bufferlength - 0x200, 0x200);\r
+\r
+ header->fastcksum = crc32(crcbuf, sizeof(crcbuf));\r
+ header->checksum = crc32(buffer, bufferlength);\r
+\r
+ if (master->unlock)\r
+ master->unlock(master, 0, master->erasesize);\r
+ res = erase_write (master, 0, master->erasesize, buffer);\r
+ if (res)\r
+ printk(KERN_ERR "Can't rewrite image header\n");\r
+\r
+out:\r
+ vfree(buffer);\r
+ return res;\r
+}\r
+\r
+static int __init parse_ar525w_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long plat_data)\r
+{\r
+ struct image_header header;\r
+ int res;\r
+ size_t len;\r
+ struct mtd_partition *rdc_flash_parts;\r
+ struct rdc_platform_data *pdata = (struct rdc_platform_data *) plat_data;\r
+\r
+ if (master->size != 0x400000) //4MB\r
+ return -ENOSYS;\r
+\r
+ res = master->read(master, 0x0, sizeof(header), &len, (char *)&header);\r
+ if (res)\r
+ return res;\r
+\r
+ if (strncmp(header.magic, "GMTK", 4))\r
+ return -ENOSYS;\r
+\r
+ if (header.kernelsz > 0x400000 || header.kernelsz < master->erasesize) {\r
+ printk(KERN_ERR "AR525W image header found, but seems corrupt, kernel size %u\n", header.kernelsz);\r
+ return -EINVAL;\r
+ }\r
+\r
+ if (header.kernelsz + sizeof(header) != header.imagesz) {\r
+ res = fixup_ar525w_header(master, &header);\r
+ if (res)\r
+ return res;\r
+ }\r
+\r
+ rdc_flash_parts = kzalloc(sizeof(struct mtd_partition) * 3, GFP_KERNEL);\r
+\r
+ rdc_flash_parts[0].name = "firmware";\r
+ rdc_flash_parts[0].offset = 0x0;\r
+ rdc_flash_parts[0].size = 0x3E0000;\r
+ rdc_flash_parts[1].name = "rootfs";\r
+ rdc_flash_parts[1].offset = header.kernelsz + sizeof(header);\r
+ rdc_flash_parts[1].size = rdc_flash_parts[0].size - rdc_flash_parts[1].offset;\r
+ rdc_flash_parts[2].name = "bootloader";\r
+ rdc_flash_parts[2].offset = 0x3E0000;\r
+ rdc_flash_parts[2].size = 0x20000;\r
+\r
+ *pparts = rdc_flash_parts;\r
+\r
+ pdata->led_data.num_leds = ARRAY_SIZE(ar525w_leds);\r
+ pdata->led_data.leds = ar525w_leds;\r
+ pdata->button_data.nbuttons = ARRAY_SIZE(ar525w_btns);\r
+ pdata->button_data.buttons = ar525w_btns;\r
+\r
+ return 3;\r
+}\r
+\r
+static struct mtd_part_parser __initdata ar525w_parser = {\r
+ .owner = THIS_MODULE,\r
+ .parse_fn = parse_ar525w_partitions,\r
+ .name = "AR525W",\r
+};\r
+\r
+static int __init ar525w_setup(void)\r
+{\r
+ return register_mtd_parser(&ar525w_parser);\r
+}\r
+\r
+arch_initcall(ar525w_setup);\r
projects / openwrt.git / blobdiff