diff --git a/flash.h b/flash.h
index d1e417f..cbc2e48 100644
--- a/flash.h
+++ b/flash.h
@@ -414,6 +414,7 @@
 	BUS_TYPE_ICH7_SPI,
 	BUS_TYPE_ICH9_SPI,
 	BUS_TYPE_IT87XX_SPI,
+	BUS_TYPE_SB600_SPI,
 	BUS_TYPE_VIA_SPI
 } flashbus_t;
 
@@ -497,6 +498,14 @@
 int it8716f_spi_chip_read(struct flashchip *flash, uint8_t *buf);
 int it8716f_spi_chip_write(struct flashchip *flash, uint8_t *buf);
 
+/* sb600spi.c */
+int sb600_spi_command(unsigned int writecnt, unsigned int readcnt,
+		      const unsigned char *writearr, unsigned char *readarr);
+int sb600_spi_read(struct flashchip *flash, uint8_t *buf);
+int sb600_spi_write(struct flashchip *flash, uint8_t *buf);
+uint8_t sb600_read_status_register(void);
+extern uint8_t volatile *sb600_spibar;
+
 /* jedec.c */
 uint8_t oddparity(uint8_t val);
 void toggle_ready_jedec(volatile uint8_t *dst);