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Unify non-shifted and shifted JEDEC access

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Some Parallel bus chips have a 16-bit mode and an 8-bit mode. They use
normal JEDEC addresses for 16-bit mode and shifted addresses (by 1 bit)
for 8-bit mode. Some programmers can access them in 16-bit mode, but on
all flashrom-supported programmers so far, we access them in 8-bit mode.
This means we have to shift the addresses but apart from the addresses
we can share the code.

This patch makes this possible by checking the chip's FEATURE_ADDR_SHIFTED
flag in common JEDEC functions and applying the right addresses respectively.

Corresponding to flashrom svn r1840.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Carl-Daniel Hailfinger
2014-08-08 08:33:01 +00:00
committed by Stefan Tauner
parent 6697f71ade
commit a8cf3620a4
7 changed files with 81 additions and 213 deletions
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6
chipdrivers.h
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@ -155,10 +155,6 @@ int printlock_regspace2_uniform_64k(struct flashctx *flash);
int printlock_regspace2_block_eraser_0(struct flashctx *flash);
int printlock_regspace2_block_eraser_1(struct flashctx *flash);
/* m29f400bt.c */
int probe_m29f400bt(struct flashctx *flash);
int write_m29f400bt(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len);
/* sst28sf040.c */
int erase_chip_28sf040(struct flashctx *flash, unsigned int addr, unsigned int blocklen);
int erase_sector_28sf040(struct flashctx *flash, unsigned int address, unsigned int sector_size);
@ -197,8 +193,6 @@ int erase_sector_stm50(struct flashctx *flash, unsigned int block, unsigned int
/* en29lv640b.c */
int probe_en29lv640b(struct flashctx *flash);
int erase_block_shifted_jedec(struct flashctx *flash, unsigned int start, unsigned int len);
int erase_chip_block_shifted_jedec(struct flashctx *flash, unsigned int start, unsigned int len);
int write_en29lv640b(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len);
#endif /* !__CHIPDRIVERS_H__ */