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path: root/drivers/mtd/spi-nor/sfdp.c
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Diffstat (limited to 'drivers/mtd/spi-nor/sfdp.c')
-rw-r--r--drivers/mtd/spi-nor/sfdp.c110
1 files changed, 77 insertions, 33 deletions
diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c
index b3b11dfed789..a8324c2da0ac 100644
--- a/drivers/mtd/spi-nor/sfdp.c
+++ b/drivers/mtd/spi-nor/sfdp.c
@@ -389,19 +389,15 @@ static u8 spi_nor_sort_erase_mask(struct spi_nor_erase_map *map, u8 erase_mask)
static void spi_nor_regions_sort_erase_types(struct spi_nor_erase_map *map)
{
struct spi_nor_erase_region *region = map->regions;
- u8 region_erase_mask, sorted_erase_mask;
+ u8 sorted_erase_mask;
+ unsigned int i;
- while (region) {
- region_erase_mask = region->offset & SNOR_ERASE_TYPE_MASK;
-
- sorted_erase_mask = spi_nor_sort_erase_mask(map,
- region_erase_mask);
+ for (i = 0; i < map->n_regions; i++) {
+ sorted_erase_mask =
+ spi_nor_sort_erase_mask(map, region[i].erase_mask);
/* Overwrite erase mask. */
- region->offset = (region->offset & ~SNOR_ERASE_TYPE_MASK) |
- sorted_erase_mask;
-
- region = spi_nor_region_next(region);
+ region[i].erase_mask = sorted_erase_mask;
}
}
@@ -446,6 +442,7 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor,
u32 dword;
u16 half;
u8 erase_mask;
+ u8 wait_states, mode_clocks, opcode;
/* JESD216 Basic Flash Parameter Table length is at least 9 DWORDs. */
if (bfpt_header->length < BFPT_DWORD_MAX_JESD216)
@@ -553,8 +550,6 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor,
* selecting the uniform erase.
*/
spi_nor_regions_sort_erase_types(map);
- map->uniform_erase_type = map->uniform_region.offset &
- SNOR_ERASE_TYPE_MASK;
/* Stop here if not JESD216 rev A or later. */
if (bfpt_header->length == BFPT_DWORD_MAX_JESD216)
@@ -631,6 +626,32 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor,
if (bfpt_header->length == BFPT_DWORD_MAX_JESD216B)
return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);
+ /* Parse 1-1-8 read instruction */
+ opcode = FIELD_GET(BFPT_DWORD17_RD_1_1_8_CMD, bfpt.dwords[SFDP_DWORD(17)]);
+ if (opcode) {
+ mode_clocks = FIELD_GET(BFPT_DWORD17_RD_1_1_8_MODE_CLOCKS,
+ bfpt.dwords[SFDP_DWORD(17)]);
+ wait_states = FIELD_GET(BFPT_DWORD17_RD_1_1_8_WAIT_STATES,
+ bfpt.dwords[SFDP_DWORD(17)]);
+ params->hwcaps.mask |= SNOR_HWCAPS_READ_1_1_8;
+ spi_nor_set_read_settings(&params->reads[SNOR_CMD_READ_1_1_8],
+ mode_clocks, wait_states, opcode,
+ SNOR_PROTO_1_1_8);
+ }
+
+ /* Parse 1-8-8 read instruction */
+ opcode = FIELD_GET(BFPT_DWORD17_RD_1_8_8_CMD, bfpt.dwords[SFDP_DWORD(17)]);
+ if (opcode) {
+ mode_clocks = FIELD_GET(BFPT_DWORD17_RD_1_8_8_MODE_CLOCKS,
+ bfpt.dwords[SFDP_DWORD(17)]);
+ wait_states = FIELD_GET(BFPT_DWORD17_RD_1_8_8_WAIT_STATES,
+ bfpt.dwords[SFDP_DWORD(17)]);
+ params->hwcaps.mask |= SNOR_HWCAPS_READ_1_8_8;
+ spi_nor_set_read_settings(&params->reads[SNOR_CMD_READ_1_8_8],
+ mode_clocks, wait_states, opcode,
+ SNOR_PROTO_1_8_8);
+ }
+
/* 8D-8D-8D command extension. */
switch (bfpt.dwords[SFDP_DWORD(18)] & BFPT_DWORD18_CMD_EXT_MASK) {
case BFPT_DWORD18_CMD_EXT_REP:
@@ -650,6 +671,10 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor,
return -EOPNOTSUPP;
}
+ /* Byte order in 8D-8D-8D mode */
+ if (bfpt.dwords[SFDP_DWORD(18)] & BFPT_DWORD18_BYTE_ORDER_SWAPPED)
+ nor->flags |= SNOR_F_SWAP16;
+
return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt);
}
@@ -674,6 +699,17 @@ static u8 spi_nor_smpt_addr_nbytes(const struct spi_nor *nor, const u32 settings
}
}
+static void spi_nor_smpt_read_dummy_fixups(const struct spi_nor *nor,
+ u8 *read_dummy)
+{
+ if (nor->manufacturer && nor->manufacturer->fixups &&
+ nor->manufacturer->fixups->smpt_read_dummy)
+ nor->manufacturer->fixups->smpt_read_dummy(nor, read_dummy);
+
+ if (nor->info->fixups && nor->info->fixups->smpt_read_dummy)
+ nor->info->fixups->smpt_read_dummy(nor, read_dummy);
+}
+
/**
* spi_nor_smpt_read_dummy() - return the configuration detection command read
* latency, in clock cycles.
@@ -686,11 +722,24 @@ static u8 spi_nor_smpt_read_dummy(const struct spi_nor *nor, const u32 settings)
{
u8 read_dummy = SMPT_CMD_READ_DUMMY(settings);
- if (read_dummy == SMPT_CMD_READ_DUMMY_IS_VARIABLE)
- return nor->read_dummy;
+ if (read_dummy == SMPT_CMD_READ_DUMMY_IS_VARIABLE) {
+ read_dummy = nor->read_dummy;
+ spi_nor_smpt_read_dummy_fixups(nor, &read_dummy);
+ }
+
return read_dummy;
}
+static void spi_nor_smpt_map_id_fixups(const struct spi_nor *nor, u8 *map_id)
+{
+ if (nor->manufacturer && nor->manufacturer->fixups &&
+ nor->manufacturer->fixups->smpt_map_id)
+ nor->manufacturer->fixups->smpt_map_id(nor, map_id);
+
+ if (nor->info->fixups && nor->info->fixups->smpt_map_id)
+ nor->info->fixups->smpt_map_id(nor, map_id);
+}
+
/**
* spi_nor_get_map_in_use() - get the configuration map in use
* @nor: pointer to a 'struct spi_nor'
@@ -744,6 +793,8 @@ static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const u32 *smpt,
map_id = map_id << 1 | !!(*buf & read_data_mask);
}
+ spi_nor_smpt_map_id_fixups(nor, &map_id);
+
/*
* If command descriptors are provided, they always precede map
* descriptors in the table. There is no need to start the iteration
@@ -779,16 +830,6 @@ out:
return ret;
}
-static void spi_nor_region_mark_end(struct spi_nor_erase_region *region)
-{
- region->offset |= SNOR_LAST_REGION;
-}
-
-static void spi_nor_region_mark_overlay(struct spi_nor_erase_region *region)
-{
- region->offset |= SNOR_OVERLAID_REGION;
-}
-
/**
* spi_nor_region_check_overlay() - set overlay bit when the region is overlaid
* @region: pointer to a structure that describes a SPI NOR erase region
@@ -806,7 +847,7 @@ spi_nor_region_check_overlay(struct spi_nor_erase_region *region,
if (!(erase[i].size && erase_type & BIT(erase[i].idx)))
continue;
if (region->size & erase[i].size_mask) {
- spi_nor_region_mark_overlay(region);
+ region->overlaid = true;
return;
}
}
@@ -841,6 +882,7 @@ static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,
if (!region)
return -ENOMEM;
map->regions = region;
+ map->n_regions = region_count;
uniform_erase_type = 0xff;
regions_erase_type = 0;
@@ -848,9 +890,10 @@ static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,
/* Populate regions. */
for (i = 0; i < region_count; i++) {
j = i + 1; /* index for the region dword */
+ region[i].offset = offset;
region[i].size = SMPT_MAP_REGION_SIZE(smpt[j]);
erase_type = SMPT_MAP_REGION_ERASE_TYPE(smpt[j]);
- region[i].offset = offset | erase_type;
+ region[i].erase_mask = erase_type;
spi_nor_region_check_overlay(&region[i], erase, erase_type);
@@ -866,21 +909,20 @@ static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,
*/
regions_erase_type |= erase_type;
- offset = (region[i].offset & ~SNOR_ERASE_FLAGS_MASK) +
- region[i].size;
+ offset = region[i].offset + region[i].size;
}
- spi_nor_region_mark_end(&region[i - 1]);
- save_uniform_erase_type = map->uniform_erase_type;
- map->uniform_erase_type = spi_nor_sort_erase_mask(map,
- uniform_erase_type);
+ save_uniform_erase_type = map->uniform_region.erase_mask;
+ map->uniform_region.erase_mask =
+ spi_nor_sort_erase_mask(map,
+ uniform_erase_type);
if (!regions_erase_type) {
/*
* Roll back to the previous uniform_erase_type mask, SMPT is
* broken.
*/
- map->uniform_erase_type = save_uniform_erase_type;
+ map->uniform_region.erase_mask = save_uniform_erase_type;
return -EINVAL;
}
@@ -968,6 +1010,8 @@ static int spi_nor_parse_4bait(struct spi_nor *nor,
{ SNOR_HWCAPS_READ_1_1_1_DTR, BIT(13) },
{ SNOR_HWCAPS_READ_1_2_2_DTR, BIT(14) },
{ SNOR_HWCAPS_READ_1_4_4_DTR, BIT(15) },
+ { SNOR_HWCAPS_READ_1_1_8, BIT(20) },
+ { SNOR_HWCAPS_READ_1_8_8, BIT(21) },
};
static const struct sfdp_4bait programs[] = {
{ SNOR_HWCAPS_PP, BIT(6) },
generated by cgit (git 2.34.1) at 2025-12-25 06:11:03 +0000