4BA: Add spi_exit_4ba function to switch SPI flash to 3-byte addressing
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>
diff --git a/spi4ba.h b/spi4ba.h
index 8e500d1..8a01792 100644
--- a/spi4ba.h
+++ b/spi4ba.h
@@ -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);