diff --git a/litex/soc/software/include/base/spi.h b/litex/soc/software/include/base/spi.h
new file mode 100644
index 000000000..db6ade284
--- /dev/null
+++ b/litex/soc/software/include/base/spi.h
@@ -0,0 +1,6 @@
+int spi_sdcard_init(uint32_t device);
+int spi_sdcard_read_sector(uint32_t device, unsigned long lba,unsigned char *buf);
+
+unsigned char spi_sdcard_goidle(void);
+unsigned char spi_sdcard_readMBR(void);
+unsigned char spi_sdcard_readFile(char *, char *, unsigned long);