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4BA: Add spi_exit_4ba function to switch SPI flash to 3-byte addressing

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Change-Id: I553e7fb5028f35e14a3a81b3fa8903c1b321a223
Signed-off-by: Ed Swierk <eswierk@skyportsystems.com>
Reviewed-on: https://review.coreboot.org/20509
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Ed Swierk
2017-07-03 13:02:18 -07:00
committed by Nico Huber
parent 7fe85694c4
commit d94d254262
3 changed files with 49 additions and 0 deletions
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4
spi4ba.h
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@ -80,6 +80,10 @@
int spi_enter_4ba_b7(struct flashctx *flash);
int spi_enter_4ba_b7_we(struct flashctx *flash);
/* exit 4-bytes addressing mode */
int spi_exit_4ba_e9(struct flashctx *flash);
int spi_exit_4ba_e9_we(struct flashctx *flash);
/* read/write flash bytes in 4-bytes addressing mode */
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);