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authorEdgar Grimberg <edgar.grimberg@zylin.com>2010-02-02 10:39:52 +0100
committerDavid Brownell <dbrownell@users.sourceforge.net>2010-02-02 09:30:33 -0800
commit503f6139c7ed05339daea8c4984d32840d795222 (patch)
tree97dd0ae96d776635f9ce98c73ee53ea450250de2 /src/flash/nor
parent3d2d5dcc9c27b84dc2e5e9ed53be0f784a450042 (diff)
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flash/str7x: After reset init the flash is unlocked
The default state of the STR7 flash after a reset init is unlocked. The information in the flash driver now reflects this. The information about the lock status cannot be read from the flash chip, so the user is informed that flash info might not contain accurate information. [dbrownell@users.sourceforge.net: line length shrinkage] Signed-off-by: Edgar Grimberg <edgar.grimberg@zylin.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Diffstat (limited to 'src/flash/nor')
-rw-r--r--src/flash/nor/str7x.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/src/flash/nor/str7x.c b/src/flash/nor/str7x.c
index a2e27dae..3bf07c95 100644
--- a/src/flash/nor/str7x.c
+++ b/src/flash/nor/str7x.c
@@ -93,7 +93,10 @@ static int str7x_build_block_list(struct flash_bank *bank)
bank->sectors[num_sectors].offset = mem_layout_str7bank0[i].sector_start;
bank->sectors[num_sectors].size = mem_layout_str7bank0[i].sector_size;
bank->sectors[num_sectors].is_erased = -1;
- bank->sectors[num_sectors].is_protected = 1;
+ /* the reset_init handler marks all the sectors unprotected,
+ * matching hardware after reset; keep the driver in sync
+ */
+ bank->sectors[num_sectors].is_protected = 0;
str7x_info->sector_bits[num_sectors++] = mem_layout_str7bank0[i].sector_bit;
}
@@ -102,7 +105,10 @@ static int str7x_build_block_list(struct flash_bank *bank)
bank->sectors[num_sectors].offset = mem_layout_str7bank1[i].sector_start;
bank->sectors[num_sectors].size = mem_layout_str7bank1[i].sector_size;
bank->sectors[num_sectors].is_erased = -1;
- bank->sectors[num_sectors].is_protected = 1;
+ /* the reset_init handler marks all the sectors unprotected,
+ * matching hardware after reset; keep the driver in sync
+ */
+ bank->sectors[num_sectors].is_protected = 0;
str7x_info->sector_bits[num_sectors++] = mem_layout_str7bank1[i].sector_bit;
}
@@ -600,6 +606,12 @@ COMMAND_HANDLER(str7x_handle_part_id_command)
static int str7x_info(struct flash_bank *bank, char *buf, int buf_size)
{
snprintf(buf, buf_size, "str7x flash driver info");
+ /* STR7x flash doesn't support sector protection interrogation.
+ * FLASH_NVWPAR acts as a write only register; its read value
+ * doesn't reflect the actual protection state of the sectors.
+ */
+ LOG_WARNING("STR7x flash lock information might not be correct "
+ "due to hardware limitations.");
return ERROR_OK;
}