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Diffstat (limited to 'ubi-utils/src/ubiinfo/ubiflash.h')
| -rw-r--r-- | ubi-utils/src/ubiinfo/ubiflash.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/ubi-utils/src/ubiinfo/ubiflash.h b/ubi-utils/src/ubiinfo/ubiflash.h new file mode 100644 index 0000000..6883879 --- /dev/null +++ b/ubi-utils/src/ubiinfo/ubiflash.h @@ -0,0 +1,185 @@ +#ifndef _UBI_FLASH_H +#define _UBI_FLASH_H +/* + * Copyright (c) International Business Machines Corp., 2006 + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/* + * FLASH related data structures and constants for UBI. + * UBI scan analysis. + * + * IPL Initial Program Loader + * SPL Secondary Program Loader + */ + +#include <stdint.h> +#include <asm/byteorder.h> +#include <mtd/ubi-header.h> + +#define UBI_BLOCK_IDENT_MAX 16 + +/* Block status information constants */ +enum blockstat { + /* IO Error */ + STAT_IO_FAILED = 1, /* 0xffffffff */ + /* Block is bad */ + STAT_BLOCK_BAD = 2, /* 0xfffffffe */ + /* ECC unrecoverable error */ + STAT_ECC_ERROR = 3, /* 0xfffffffd */ + /* CRC checksum failed */ + STAT_CRC_ERROR = 4, /* 0xfffffffc */ + /* Magic number not available */ + STAT_NO_MAGIC = 5, /* 0xfffffffb */ + /* No image available */ + STAT_NO_IMAGE = 6, + /* Image is invalid */ + STAT_INVALID_IMAGE = 7, + /* Image is defect */ + STAT_DEFECT_IMAGE = 8, +}; + +/* + * Flash types + */ +enum flashtypes { + FLASH_TYPE_NAND = 1, + FLASH_TYPE_NOR, +}; + +/* Nand read buffer size: 2KiB + 64byte spare */ +#define NAND_READ_BUF_SIZE (2048 + 64) + +/* Size of the CRC table */ +#define CRC32_TABLE_SIZE 256 + +/* Image is not available marker for image offs */ +#define UBI_IMAGE_NOT_AVAILABLE 0xFFFFFFFF + +/* Increment this number, whenever you change the structure */ +#define UBI_SCAN_INFO_VERSION 2 + +/* Time measurement as far as the code size allows us to do this */ +#define UBI_TIMESTAMPS 16 + +/** + * struct ubi_scan_info - RAM table filled by IPL scan + * + * @version: Version of the structure + * @bootstatus: Boot status of the current boot + * @flashtype: Flash type (NAND/NOR) + * @flashid: ID of the flash chip + * @flashmfr: Manufacturer ID of the flash chip + * @flashsize: Size of the FLASH + * @blocksize: Eraseblock size + * @blockshift: Shift count to calc block number from offset + * @nrblocks: Number of erase blocks on flash + * @pagesize: Pagesize (NAND) + * @blockinfo: Pointer to an array of block status information + * filled by FLASH scan + * @images: Pointer to FLASH block translation table sorted + * by image type and load order + * @imageblocks: Number of blocks found per image + * @imageoffs: Offset per imagetype to the first + * block in the translation table + * @imagedups duplicate blocks (max. one per volume) + * @imagelen: Length of the loaded image + * @crc32_table: CRC32 table buffer + * @page_buf: Page buffer for NAND FLASH + */ +struct ubi_scan_info { + int version; + unsigned int bootstatus; + unsigned int flashtype; + unsigned int flashid; + unsigned int flashmfr; + unsigned int flashsize; + unsigned int blocksize; + unsigned int blockshift; + unsigned int nrblocks; + unsigned int pagesize; + + struct ubi_vid_hdr *blockinfo; + struct ubi_vid_hdr **images; + unsigned int imageblocks[UBI_BLOCK_IDENT_MAX]; + unsigned int imageoffs[UBI_BLOCK_IDENT_MAX]; + struct ubi_vid_hdr *imagedups[UBI_BLOCK_IDENT_MAX]; + unsigned int imagelen; + uint32_t crc32_table[CRC32_TABLE_SIZE]; + uint8_t page_buf[NAND_READ_BUF_SIZE]; + unsigned int times[UBI_TIMESTAMPS]; +}; + +/* External function definition */ +extern int flash_read(void *buf, unsigned int offs, int len); +extern int flash_read_slice(struct ubi_scan_info *fi, void *buf, + unsigned int offs, int len); +extern void ipl_main(struct ubi_scan_info *fi); + +#ifndef CFG_EXAMPLE_IPL +extern int ipl_scan(struct ubi_scan_info *fi); +extern int ipl_load(struct ubi_scan_info *fi, int nr, uint8_t *loadaddr); + +#define IPL_STATIC + +#else +#define IPL_STATIC static +#endif + +/** + * get_boot_status - get the boot status register + * + * Shift the lower 16 bit into the upper 16 bit and return + * the result. + */ +uint32_t get_boot_status(void); + +/** + * set_boot_status - Set the boot status register + * + * @status: The status value to set + * + */ +void set_boot_status(uint32_t status); + +static inline unsigned int ubi_vid_offset(struct ubi_scan_info *fi) +{ + if (fi->flashtype == FLASH_TYPE_NOR) + return UBI_EC_HDR_SIZE; + else + return fi->pagesize - UBI_VID_HDR_SIZE; +} + +static inline unsigned int ubi_data_offset(struct ubi_scan_info *fi) +{ + if (fi->flashtype == FLASH_TYPE_NOR) + return UBI_EC_HDR_SIZE + UBI_VID_HDR_SIZE; + else + return fi->pagesize; +} + +/** + * IPL checkpoints + */ +#define CHKP_HWINIT 0x3030 +#define CHKP_IPLSCAN_FAILED 0x3034 +#define CHKP_SPL_START 0x3037 +#define CHKP_SPLLOAD_STATUS 0x3130 + +extern void checkpoint(uint32_t cpoint); +extern void switch_watchdog(void); + +#endif |