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spl: fit: nand: allow for non-page-aligned elements

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Add a weak nand_get_mtd function for nand drivers to provide mtd info
and use this to set pagesize such that reading of non page-aligned
elements can succeed.

The spl_load_simple_fit already handles block block access so all we
need to do is provide the nand writesize as the block length.

Further cleanup of the drivers which use nand_spl_loaders.c such as
am335x_spl_bch.c, atmel_nand.c, and nand_spl_simple.c could be done
using info from mtd_info instead of statically defined details.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Tim Harvey 2021-03-01 14:33:28 -08:00 • committed by Stefano Babic
parent 39cb85043c
commit aa0032f672
2 changed files with 20 additions and 5 deletions
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20
common/spl/spl_nand.c
View file

@ -48,17 +48,27 @@ static ulong spl_nand_fit_read(struct spl_load_info *load, ulong offs,
sector = *(int *)load->priv;
offs = sector + nand_spl_adjust_offset(sector, offs - sector);
#else
offs *= load->bl_len;
size *= load->bl_len;
#endif
err = nand_spl_load_image(offs, size, dst);
if (err)
return 0;
return size;
return size / load->bl_len;
}
struct mtd_info * __weak nand_get_mtd(void)
{
return NULL;
}
static int spl_nand_load_element(struct spl_image_info *spl_image,
int offset, struct image_header *header)
{
struct mtd_info *mtd = nand_get_mtd();
int bl_len = mtd ? mtd->writesize : 1;
int err;
err = nand_spl_load_image(offset, sizeof(*header), (void *)header);
@ -73,18 +83,18 @@ static int spl_nand_load_element(struct spl_image_info *spl_image,
load.dev = NULL;
load.priv = &offset;
load.filename = NULL;
load.bl_len = 1;
load.bl_len = bl_len;
load.read = spl_nand_fit_read;
return spl_load_simple_fit(spl_image, &load, offset, header);
return spl_load_simple_fit(spl_image, &load, offset / bl_len, header);
} else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
struct spl_load_info load;
load.dev = NULL;
load.priv = NULL;
load.filename = NULL;
load.bl_len = 1;
load.bl_len = bl_len;
load.read = spl_nand_fit_read;
return spl_load_imx_container(spl_image, &load, offset);
return spl_load_imx_container(spl_image, &load, offset / bl_len);
} else {
err = spl_parse_image_header(spl_image, header);
if (err)

5
drivers/mtd/nand/raw/mxs_nand_spl.c
View file

@ -282,6 +282,11 @@ int nand_spl_load_image(uint32_t offs, unsigned int size, void *buf)
return 0;
}
struct mtd_info *nand_get_mtd(void)
{
return mtd;
}
int nand_default_bbt(struct mtd_info *mtd)
{
return 0;