diff options
Diffstat (limited to 'drivers/mtd/nand/nand_spl_simple.c')
-rw-r--r-- | drivers/mtd/nand/nand_spl_simple.c | 98 |
1 files changed, 2 insertions, 96 deletions
diff --git a/drivers/mtd/nand/nand_spl_simple.c b/drivers/mtd/nand/nand_spl_simple.c index 55f48d3a14..56e86d1760 100644 --- a/drivers/mtd/nand/nand_spl_simple.c +++ b/drivers/mtd/nand/nand_spl_simple.c @@ -209,102 +209,6 @@ static int nand_read_page(int block, int page, void *dst) } #endif -#ifdef CONFIG_SPL_UBI -/* - * Temporary storage for non NAND page aligned and non NAND page sized - * reads. Note: This does not support runtime detected FLASH yet, but - * that should be reasonably easy to fix by making the buffer large - * enough :) - */ -static u8 scratch_buf[CONFIG_SYS_NAND_PAGE_SIZE]; - -/** - * nand_spl_read_block - Read data from physical eraseblock into a buffer - * @block: Number of the physical eraseblock - * @offset: Data offset from the start of @peb - * @len: Data size to read - * @dst: Address of the destination buffer - * - * This could be further optimized if we'd have a subpage read - * function in the simple code. On NAND which allows subpage reads - * this would spare quite some time to readout e.g. the VID header of - * UBI. - * - * Notes: - * @offset + @len are not allowed to be larger than a physical - * erase block. No sanity check done for simplicity reasons. - * - * To support runtime detected flash this needs to be extended by - * information about the actual flash geometry, but thats beyond the - * scope of this effort and for most applications where fast boot is - * required it is not an issue anyway. - */ -int nand_spl_read_block(int block, int offset, int len, void *dst) -{ - int page, read; - - /* Calculate the page number */ - page = offset / CONFIG_SYS_NAND_PAGE_SIZE; - - /* Offset to the start of a flash page */ - offset = offset % CONFIG_SYS_NAND_PAGE_SIZE; - - while (len) { - /* - * Non page aligned reads go to the scratch buffer. - * Page aligned reads go directly to the destination. - */ - if (offset || len < CONFIG_SYS_NAND_PAGE_SIZE) { - nand_read_page(block, page, scratch_buf); - read = min(len, CONFIG_SYS_NAND_PAGE_SIZE - offset); - memcpy(dst, scratch_buf + offset, read); - offset = 0; - } else { - nand_read_page(block, page, dst); - read = CONFIG_SYS_NAND_PAGE_SIZE; - } - page++; - len -= read; - dst += read; - } - return 0; -} -#endif - -int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst) -{ - unsigned int block, lastblock; - unsigned int page; - - /* - * offs has to be aligned to a page address! - */ - block = offs / CONFIG_SYS_NAND_BLOCK_SIZE; - lastblock = (offs + size - 1) / CONFIG_SYS_NAND_BLOCK_SIZE; - page = (offs % CONFIG_SYS_NAND_BLOCK_SIZE) / CONFIG_SYS_NAND_PAGE_SIZE; - - while (block <= lastblock) { - if (!nand_is_bad_block(block)) { - /* - * Skip bad blocks - */ - while (page < CONFIG_SYS_NAND_PAGE_COUNT) { - nand_read_page(block, page, dst); - dst += CONFIG_SYS_NAND_PAGE_SIZE; - page++; - } - - page = 0; - } else { - lastblock++; - } - - block++; - } - - return 0; -} - /* nand_init() - initialize data to make nand usable by SPL */ void nand_init(void) { @@ -333,3 +237,5 @@ void nand_deselect(void) if (nand_chip.select_chip) nand_chip.select_chip(mtd, -1); } + +#include "nand_spl_loaders.c" |