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| author | Boris Baykov <dev@borisbaykov.com> | 2016-06-11 18:28:59 +0200 |
|---|---|---|
| committer | David Hendricks <david.hendricks@gmail.com> | 2017-10-14 00:46:41 +0000 |
| commit | 50a5660c9c11c77c794783cd9a3343bc3ff07b6e (patch) | |
| tree | 7095a74f39788084a14c3657bc3b868f923f5340 /chipdrivers.h | |
| parent | f4d7772cee806d68a06db5394ab85a6e76904e88 (diff) | |
| download | flashrom-50a5660c9c11c77c794783cd9a3343bc3ff07b6e.tar.gz flashrom-50a5660c9c11c77c794783cd9a3343bc3ff07b6e.tar.bz2 flashrom-50a5660c9c11c77c794783cd9a3343bc3ff07b6e.zip | |
4BA: Basic support for 4-bytes addressing mode extensions
If flash chip is switched to 4-bytes addressing mode then all
read/erase/program instructions will be switched from 3-bytes mode
to 4-bytes mode. Then well known instructions like 03h (Read),
02h (Program) and 20h,52h,D8h (Erase) will become one byte longer
and accept 4-bytes address instead of 3-bytes.
This patch provides support for well known instructions in 4-bytes
addressing mode. Also here is the code to enter 4-bytes addressing
mode by execute the instruction B7h (Enter 4-bytes mode).
Patched files
-------------
chipdrivers.h
+ added functions declarations for spi4ba.c
flash.h
+ feature definitions added
Makefile
+ added spi4ba.c
Added files
-----------
spi4ba.h
+ definitions for 4-bytes addressing JEDEC commands
+ functions declarations from spi4ba.c (same as in chipdrivers.h, just to see)
spi4ba.c
+ functions for enter 4-bytes addressing mode
+ functions for read/write/erase in 4-bytes addressing mode
Change-Id: Ie72e2a89cd75fb4d09f48e81c4c1d927c317b7a7
Signed-off-by: Boris Baykov <dev@borisbaykov.com>, Russia, Jan 2014
[clg: ported from
https://www.flashrom.org/pipermail/flashrom/2015-January/013199.html ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-on: https://review.coreboot.org/20513
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'chipdrivers.h')
| -rw-r--r-- | chipdrivers.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/chipdrivers.h b/chipdrivers.h index c85eac96c..dccd1ff92 100644 --- a/chipdrivers.h +++ b/chipdrivers.h @@ -195,4 +195,14 @@ int erase_sector_stm50(struct flashctx *flash, unsigned int block, unsigned int int probe_en29lv640b(struct flashctx *flash); int write_en29lv640b(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len); +/* spi4ba.c */ +int spi_enter_4ba_b7(struct flashctx *flash); +int spi_enter_4ba_b7_we(struct flashctx *flash); +int spi_byte_program_4ba(struct flashctx *flash, unsigned int addr, uint8_t databyte); +int spi_nbyte_program_4ba(struct flashctx *flash, unsigned int addr, const uint8_t *bytes, unsigned int len); +int spi_nbyte_read_4ba(struct flashctx *flash, unsigned int addr, uint8_t *bytes, unsigned int len); +int spi_block_erase_20_4ba(struct flashctx *flash, unsigned int addr, unsigned int blocklen); +int spi_block_erase_52_4ba(struct flashctx *flash, unsigned int addr, unsigned int blocklen); +int spi_block_erase_d8_4ba(struct flashctx *flash, unsigned int addr, unsigned int blocklen); + #endif /* !__CHIPDRIVERS_H__ */ |