diff options
Diffstat (limited to 'target/linux/rdc/files/drivers/mtd/maps/rdc3210.c')
| -rw-r--r-- | target/linux/rdc/files/drivers/mtd/maps/rdc3210.c | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/target/linux/rdc/files/drivers/mtd/maps/rdc3210.c b/target/linux/rdc/files/drivers/mtd/maps/rdc3210.c new file mode 100644 index 0000000000..fb2a3f854f --- /dev/null +++ b/target/linux/rdc/files/drivers/mtd/maps/rdc3210.c @@ -0,0 +1,379 @@ +/******************************************************************* + * Simple Flash mapping for RDC3210 * + * * + * 2005.03.23 * + * Dante Su (dante_su@gemtek.com.tw) * + * Copyright (C) 2005 Gemtek Corporation * + *******************************************************************/ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <asm/io.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> +#include <linux/autoconf.h> +#include <linux/sched.h> +#include <linux/squashfs_fs.h> + +static struct mtd_info *rdc3210_mtd; + +struct map_info rdc3210_map = +{ + .name = "RDC3210 Flash", + .size = CONFIG_MTD_RDC3210_SIZE, + .bankwidth = CONFIG_MTD_RDC3210_BUSWIDTH, +}; + +/* Dante: This is the default static mapping, however this is nothing but a hint. (Say dynamic mapping) */ +static struct mtd_partition rdc3210_parts[] = +{ +#if CONFIG_MTD_RDC3210_SIZE == 0x400000 + { name: "linux", offset: 0, size: 0x003C0000 }, /* 3840 KB = (Kernel + ROMFS) = (768 KB + 3072 KB) */ + { name: "romfs", offset: 0x000C0000, size: 0x00300000 }, /* 3072 KB */ + { name: "nvram", offset: 0x003C0000, size: 0x00010000 }, /* 64 KB */ +#ifdef CONFIG_MTD_RDC3210_FACTORY_PRESENT + { name: "factory", offset: 0x003D0000, size: 0x00010000 }, /* 64 KB */ +#endif + { name: "bootldr", offset: 0x003E0000, size: 0x00020000 }, /* 128 KB */ +#elif CONFIG_MTD_RDC3210_SIZE == 0x200000 + { name: "linux", offset: 0x00008000, size: 0x001E8000 }, + { name: "romfs", offset: 0x000C8000, size: 0x00128000 }, + { name: "nvram", offset: 0x00000000, size: 0x00008000 }, /* 64 KB */ +#ifdef CONFIG_MTD_RDC3210_FACTORY_PRESENT +#error Unsupported configuration! +#endif + { name: "bootldr", offset: 0x001F0000, size: 0x00010000 }, +#else +#error Unsupported configuration! +#endif +}; + +static __u32 crctab[257] = { + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, + 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, + 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, + 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, + 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, + 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, + 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, + 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, + 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, + 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, + 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, + 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, + 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, + 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, + 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, + 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, + 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, + 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, + 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, + 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, + 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, + 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, + 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, + 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, + 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, + 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, + 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, + 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, + 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, + 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, + 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, + 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, + 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, + 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, + 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, + 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, + 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, + 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, + 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, + 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, + 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, + 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, + 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, + 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, + 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, + 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, + 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, + 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, + 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, + 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, + 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, + 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, + 0 +}; + +static __u32 crc32(__u8 * buf, __u32 len) +{ + register int i; + __u32 sum; + register __u32 s0; + s0 = ~0; + for (i = 0; i < len; i++) { + s0 = (s0 >> 8) ^ crctab[(__u8) (s0 & 0xFF) ^ buf[i]]; + } + sum = ~s0; + return sum; +} + +static void erase_callback(struct erase_info *done) +{ + wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; + wake_up(wait_q); +} + +static int erase_write (struct mtd_info *mtd, unsigned long pos, + int len, const char *buf) +{ + struct erase_info erase; + DECLARE_WAITQUEUE(wait, current); + wait_queue_head_t wait_q; + size_t retlen; + int ret; + + /* + * First, let's erase the flash block. + */ + + init_waitqueue_head(&wait_q); + erase.mtd = mtd; + erase.callback = erase_callback; + erase.addr = pos; + erase.len = len; + erase.priv = (u_long)&wait_q; + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&wait_q, &wait); + + ret = mtd->erase(mtd, &erase); + if (ret) { + set_current_state(TASK_RUNNING); + remove_wait_queue(&wait_q, &wait); + printk (KERN_WARNING "erase of region [0x%lx, 0x%x] " + "on \"%s\" failed\n", + pos, len, mtd->name); + return ret; + } + + schedule(); /* Wait for erase to finish. */ + remove_wait_queue(&wait_q, &wait); + + /* + * Next, writhe data to flash. + */ + + ret = mtd->write (mtd, pos, len, &retlen, buf); + if (ret) + return ret; + if (retlen != len) + return -EIO; + return 0; +} + +static int __init init_rdc3210_map(void) +{ + rdc3210_map.phys = -rdc3210_map.size; + printk(KERN_NOTICE "flash device: %x at %x\n", rdc3210_map.size, rdc3210_map.phys); + + rdc3210_map.map_priv_1 = (unsigned long)(rdc3210_map.virt = ioremap_nocache(rdc3210_map.phys, rdc3210_map.size)); + + if (!rdc3210_map.map_priv_1) + { + printk("Failed to ioremap\n"); + return -EIO; + } + rdc3210_mtd = do_map_probe("cfi_probe", &rdc3210_map); +#ifdef CONFIG_MTD_RDC3210_STATIC_MAP /* Dante: This is for fixed map */ + if (rdc3210_mtd) + { + rdc3210_mtd->module = THIS_MODULE; + add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0])); + return 0; + } +#else /* Dante: This is for dynamic mapping */ + +#include "imghdr.h" + + typedef struct { + u8 magic[4]; + u32 kernelsz, ramdisksz; + u8 magic2[4]; + u32 sz2; + }sc_imghdr_t; + + if (rdc3210_mtd) + { // Dante + sc_imghdr_t *hdr2= (sc_imghdr_t *)(rdc3210_map.map_priv_1); + gt_imghdr_t *hdr = (gt_imghdr_t *)hdr2 +#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2 + , *ptmp +#endif + ; + int len, tmp, tmp2, tmp3, tmp4, hdr_type = 0; + + if(!memcmp(hdr->magic, GTIMG_MAGIC, 4)) + { + hdr_type = 1; + tmp = hdr->kernelsz + sizeof(gt_imghdr_t); + tmp2 = rdc3210_mtd->erasesize; + tmp3 = ((tmp / 32) + ((tmp % 32) ? 1 : 0)) * 32; + tmp4 = ((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2; + } +#ifndef CONFIG_MTD_RDC3210_ALLOW_JFFS2 + else if (!memcmp(hdr2->magic, "CSYS", 4)) + { + hdr_type = 2; + tmp = hdr2->ramdisksz + hdr2->kernelsz + sizeof(sc_imghdr_t); + tmp2 = rdc3210_mtd->erasesize; + tmp3 = ((tmp / 32) + ((tmp % 32) ? 1 : 0)) * 32; + tmp4 = ((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2; + } +#endif + else + { + iounmap((void *)rdc3210_map.map_priv_1); + rdc3210_map.map_priv_1 = 0L; + rdc3210_map.virt = NULL; + printk("Invalid MAGIC for Firmware Image!!!\n"); + return -EIO; + } +#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2 + tmp = (tmp3 == tmp4) ? tmp4 + tmp2 : tmp4; + if ((ptmp = (gt_imghdr_t *)vmalloc(tmp)) == NULL) + { + iounmap((void *)rdc3210_map.map_priv_1); + rdc3210_map.map_priv_1 = 0L; + rdc3210_map.virt = NULL; + printk("Can't allocate 0x%08x for flash-reading buffer!\n", tmp); + return -ENOMEM; + } + if (rdc3210_mtd->read(rdc3210_mtd, 0, tmp, &len, (__u8 *)ptmp) || len != tmp) + { + vfree(ptmp); + iounmap((void *)rdc3210_map.map_priv_1); + rdc3210_map.map_priv_1 = 0L; + rdc3210_map.virt = NULL; + printk("Can't read that much flash! Read 0x%08x of it.\n", len); + return -EIO; + } +#endif +#ifdef CONFIG_MTD_RDC3210_FACTORY_PRESENT + /* 1. Adjust Redboot */ + tmp = rdc3210_mtd->size - rdc3210_parts[4].size; + rdc3210_parts[4].offset = tmp - (tmp % tmp2); + rdc3210_parts[4].size = rdc3210_mtd->size - rdc3210_parts[4].offset; + + /* 2. Adjust Factory Default */ + tmp -= rdc3210_parts[3].size; + rdc3210_parts[3].offset = tmp - (tmp % tmp2); + rdc3210_parts[3].size = rdc3210_parts[4].offset - rdc3210_parts[3].offset; +#else + /* 1. Adjust Redboot */ + tmp = rdc3210_mtd->size - rdc3210_parts[3].size; + rdc3210_parts[3].offset = tmp - (tmp % tmp2); + rdc3210_parts[3].size = rdc3210_mtd->size - rdc3210_parts[3].offset; +#endif + if (hdr_type == 1) { + /* 3. Adjust NVRAM */ +#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2 + if (*(__u32 *)(((unsigned char *)ptmp)+tmp3) == SQUASHFS_MAGIC) + { + len = 1; + tmp4 = tmp3; + tmp = hdr->imagesz; + rdc3210_parts[2].name = "rootfs_data"; + rdc3210_parts[2].offset = rdc3210_parts[0].offset + (((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2); + } + else +#else + tmp4 = tmp3; +#endif + { + len = 0; + tmp -= rdc3210_parts[2].size; + rdc3210_parts[2].offset = tmp - (tmp % tmp2); + } + rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset; + } + else if (hdr_type == 2) + { + len = 0; + tmp4 = tmp3; + } + + /* 4. Adjust Linux (Kernel + ROMFS) */ + rdc3210_parts[0].size = rdc3210_parts[len + hdr_type + 1].offset - rdc3210_parts[0].offset; + + /* 5. Adjust ROMFS */ + rdc3210_parts[1].offset = rdc3210_parts[0].offset + tmp4; + rdc3210_parts[1].size = rdc3210_parts[hdr_type + 1].offset - rdc3210_parts[1].offset; +#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2 + if (!(hdr->reserved || len)) + { + __u8 buf[1024]; + ptmp->reserved = hdr->imagesz; + ptmp->imagesz = tmp4; + ptmp->checksum = ptmp->fastcksum = 0; + memcpy(buf, ptmp, 0x100); + memcpy(buf + 0x100, ((__u8 *)ptmp) + ((tmp4 >> 1) - ((tmp4 & 0x6) >> 1)), 0x100); + memcpy(buf + 0x200, ((__u8 *)ptmp) + (tmp4 - 0x200), 0x200); + ptmp->fastcksum = crc32(buf, sizeof(buf)); + ptmp->checksum = crc32((__u8 *)ptmp, tmp4); + if (rdc3210_mtd->unlock) rdc3210_mtd->unlock(rdc3210_mtd, 0, tmp2); + if ((len = erase_write(rdc3210_mtd, 0, tmp2, (char *)ptmp))) + { + vfree(ptmp); + iounmap((void *)rdc3210_map.map_priv_1); + rdc3210_map.map_priv_1 = 0L; + rdc3210_map.virt = NULL; + printk("Couldn't erase! Got %d.\n", len); + return len; + } + if (rdc3210_mtd->sync) rdc3210_mtd->sync(rdc3210_mtd); + } + vfree(ptmp); +#endif + rdc3210_mtd->owner = THIS_MODULE; + add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0])); + return 0; + } +#endif + iounmap((void *)rdc3210_map.map_priv_1); + rdc3210_map.map_priv_1 = 0L; + rdc3210_map.virt = NULL; + return -ENXIO; +} + +static void __exit cleanup_rdc3210_map(void) +{ + if (rdc3210_mtd) + { + del_mtd_partitions(rdc3210_mtd); + map_destroy(rdc3210_mtd); + } + + if (rdc3210_map.map_priv_1) + { + iounmap((void *)rdc3210_map.map_priv_1); + rdc3210_map.map_priv_1 = 0L; + rdc3210_map.virt = NULL; + } +} + +module_init(init_rdc3210_map); +module_exit(cleanup_rdc3210_map); |