Since commit 2580a2a7e719 ("mtd: nand: Increase max sizes of OOB and Page size"), three boards (ph1_ld4, ph1_pro4, ph1_sld8) fail to build with the following error message: arm-linux-gnueabi-ld.bfd: SPL image plus BSS too big

They compile drivers/mtd/nand/denali_spl.c and it has a page_buffer as static data:

static uint8_t page_buffer[NAND_MAX_PAGESIZE];

This buffer required 8KB in .bss section before that commit and now it has been increased to 16KB. Given limited code/memory size for SPL, it is not a good idea to allocate a page buffer statically. In the first place, the load address 'dst' can be used as a page buffer.

Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---

drivers/mtd/nand/denali_spl.c | 31 +++++++++++-------------------- 1 file changed, 11 insertions(+), 20 deletions(-)

diff --git a/drivers/mtd/nand/denali_spl.c b/drivers/mtd/nand/denali_spl.c index e98f537..04c59b9 100644 --- a/drivers/mtd/nand/denali_spl.c +++ b/drivers/mtd/nand/denali_spl.c @@ -22,7 +22,6 @@ static void __iomem *denali_flash_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;

static const int flash_bank; -static uint8_t page_buffer[NAND_MAX_PAGESIZE]; static int page_size, oob_size, pages_per_block;

static void index_addr(uint32_t address, uint32_t data) @@ -144,15 +143,15 @@ static int nand_read_page(void *buf, int page) return 0; }

-static int nand_block_isbad(int block) +static int nand_block_isbad(void *buf, int block) { int ret;

- ret = nand_read_oob(page_buffer, block * pages_per_block); + ret = nand_read_oob(buf, block * pages_per_block); if (ret < 0) return ret;

- return page_buffer[CONFIG_SYS_NAND_BAD_BLOCK_POS] != 0xff; + return *((uint8_t *)buf + CONFIG_SYS_NAND_BAD_BLOCK_POS) != 0xff; }

/* nand_init() - initialize data to make nand usable by SPL */ @@ -184,7 +183,7 @@ int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst)

while (size) { if (force_bad_block_check || page == 0) { - ret = nand_block_isbad(block); + ret = nand_block_isbad(dst, block); if (ret < 0) return ret;

@@ -196,24 +195,16 @@ int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst)

force_bad_block_check = 0;

- if (unlikely(column || size < page_size)) { - /* Partial page read */ - ret = nand_read_page(page_buffer, - block * pages_per_block + page); - if (ret < 0) - return ret; + ret = nand_read_page(dst, block * pages_per_block + page); + if (ret < 0) + return ret;

- readlen = min(page_size - column, (int)size); - memcpy(dst, page_buffer, readlen); + readlen = min(page_size - column, (int)size);

+ if (unlikely(column)) { + /* Partial page read */ + memmove(dst, dst + column, readlen); column = 0; - } else { - ret = nand_read_page(dst, - block * pages_per_block + page); - if (ret < 0) - return ret; - - readlen = page_size; }

size -= readlen;