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Add detailed status register printing and unlocking for all ATMEL AT25* chips

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Add support for Atmel AT25DF081A and AT25DQ161.

Some chips require EWSR before WRSR, others require WREN before WRSR,
and some support both variants. Add feature_bits to select the correct
SPI command, and default to EWSR.

Corresponding to flashrom svn r1115.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Tested-by: Steven Rosario
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
This commit is contained in:
Carl-Daniel Hailfinger
2010-07-29 13:09:18 +00:00
parent f792c7d4cb
commit fd7075ae75
7 changed files with 442 additions and 29 deletions
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6
flash.h
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@ -69,8 +69,9 @@ enum chipbustype {
/*
* How many different erase functions do we have per chip?
* Atmel AT25FS010 has 6 different functions.
*/
#define NUM_ERASEFUNCTIONS 5
#define NUM_ERASEFUNCTIONS 6
#define FEATURE_REGISTERMAP (1 << 0)
#define FEATURE_BYTEWRITES (1 << 1)
@ -82,6 +83,9 @@ enum chipbustype {
#define FEATURE_ADDR_2AA (1 << 2)
#define FEATURE_ADDR_AAA (2 << 2)
#define FEATURE_ADDR_SHIFTED (1 << 5)
#define FEATURE_WRSR_EWSR (1 << 6)
#define FEATURE_WRSR_WREN (1 << 7)
#define FEATURE_WRSR_EITHER (FEATURE_WRSR_EWSR | FEATURE_WRSR_WREN)
struct flashchip {
const char *vendor;