There are some older atmel nor chips which have negated logic for TopBottom detection. This patch adds a special handling for the old chips. This is the same mechanism as implemented in linux kernel.
Signed-off-by: Andreas Bießmann <[email protected]> --- src/flash/nor/cfi.c | 21 +++++++++++++++++---- 1 files changed, 17 insertions(+), 4 deletions(-) diff --git a/src/flash/nor/cfi.c b/src/flash/nor/cfi.c index 3f1fbab..f854dd6 100644 --- a/src/flash/nor/cfi.c +++ b/src/flash/nor/cfi.c @@ -42,6 +42,10 @@ /* defines internal maximum size for code fragment in cfi_intel_write_block() */ #define CFI_MAX_INTEL_CODESIZE 256 +/* some id-types with specific handling */ +#define AT49BV6416 0x00d6 +#define AT49BV6416T 0x00d2 + static struct cfi_unlock_addresses cfi_unlock_addresses[] = { [CFI_UNLOCK_555_2AA] = { .unlock1 = 0x555, .unlock2 = 0x2aa }, @@ -700,10 +704,19 @@ static int cfi_read_atmel_pri_ext(struct flash_bank *bank) if (atmel_pri_ext.features & 0x02) pri_ext->EraseSuspend = 2; - if (atmel_pri_ext.bottom_boot) - pri_ext->TopBottom = 2; - else - pri_ext->TopBottom = 3; + /* some chips got it backwards... */ + if (cfi_info->device_id == AT49BV6416 || + cfi_info->device_id == AT49BV6416T) { + if (atmel_pri_ext.bottom_boot) + pri_ext->TopBottom = 3; + else + pri_ext->TopBottom = 2; + } else { + if (atmel_pri_ext.bottom_boot) + pri_ext->TopBottom = 2; + else + pri_ext->TopBottom = 3; + } pri_ext->_unlock1 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock1; pri_ext->_unlock2 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock2; -- 1.7.6 _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
