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| author | Boris Baykov <dev@borisbaykov.com> | 2016-06-11 18:29:03 +0200 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2017-10-15 12:35:08 +0000 |
| commit | 7fe85694c4a597abb2a83c2f0f3a62a1a22e130e (patch) | |
| tree | 0da033666d79e9b3dc471762d1b02ee41a7a7a8d /chipdrivers.h | |
| parent | 5de3b9b7263196b1d2bf41659ca44c7ea386b8ab (diff) | |
| download | flashrom-7fe85694c4a597abb2a83c2f0f3a62a1a22e130e.tar.gz flashrom-7fe85694c4a597abb2a83c2f0f3a62a1a22e130e.tar.bz2 flashrom-7fe85694c4a597abb2a83c2f0f3a62a1a22e130e.zip | |
4BA: Support for new direct-4BA instructions + W25Q256.V update
Large flash chips usually support special instructions to work with
4-bytes address directly from 3-bytes addressing mode and without
do switching to 4-bytes mode. There are 13h (4BA Read), 12h (4BA Program)
and 21h,5Ch,DCh (4BA Erase), correspondingly. However not all these
instructions are supported by all large flash chips. Some chips
support 13h only, some 13h,12h,21h and DCh, but not 5Ch. This depends
on the manufacturer of the chip.
This patch provides code to use direct 4-bytes addressing instructions.
This code should work but it tested partially only. My W25Q256FV has
support for 4BA_Read (13h), but doesn't have support 4BA_Program (12h)
and 4BA_Erase instructions. So, direct 4BA program and erase
should be tested after.
Patched files
-------------
chipdrivers.h
+ added functions declarations for spi4ba.c
flash.h
+ feature definitions added
flashchips.c
+ modified definition of Winbond W25Q256BV/W25Q256FV chips
flashrom.c
+ modified switch to 4-bytes addressing for direct-4BA instructions
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 read/write/erase directly with 4-bytes address (from any mode)
Change-Id: Ib51bcc5de7826b30ad697fcbb9a5152bde2c2ac9
Signed-off-by: Boris Baykov <dev@borisbaykov.com>, Russia, Jan 2014
[clg: ported from
https://www.flashrom.org/pipermail/flashrom/2015-January/013198.html ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-on: https://review.coreboot.org/20508
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'chipdrivers.h')
| -rw-r--r-- | chipdrivers.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/chipdrivers.h b/chipdrivers.h index a3da86570..20529d5be 100644 --- a/chipdrivers.h +++ b/chipdrivers.h @@ -210,5 +210,11 @@ int spi_nbyte_read_4ba_ereg(struct flashctx *flash, unsigned int addr, uint8_t * int spi_block_erase_20_4ba_ereg(struct flashctx *flash, unsigned int addr, unsigned int blocklen); int spi_block_erase_52_4ba_ereg(struct flashctx *flash, unsigned int addr, unsigned int blocklen); int spi_block_erase_d8_4ba_ereg(struct flashctx *flash, unsigned int addr, unsigned int blocklen); +int spi_byte_program_4ba_direct(struct flashctx *flash, unsigned int addr, uint8_t databyte); +int spi_nbyte_program_4ba_direct(struct flashctx *flash, unsigned int addr, const uint8_t *bytes, unsigned int len); +int spi_nbyte_read_4ba_direct(struct flashctx *flash, unsigned int addr, uint8_t *bytes, unsigned int len); +int spi_block_erase_21_4ba_direct(struct flashctx *flash, unsigned int addr, unsigned int blocklen); +int spi_block_erase_5c_4ba_direct(struct flashctx *flash, unsigned int addr, unsigned int blocklen); +int spi_block_erase_dc_4ba_direct(struct flashctx *flash, unsigned int addr, unsigned int blocklen); #endif /* !__CHIPDRIVERS_H__ */ |