diff --git a/board/exbitgen/exbitgen.c b/board/exbitgen/exbitgen.c
new file mode 100644
index 0000000..f2cd8ca
--- /dev/null
+++ b/board/exbitgen/exbitgen.c
@@ -0,0 +1,117 @@
+#include <asm/u-boot.h>
+#include <asm/processor.h>
+#include <common.h>
+#include "exbitgen.h"
+
+/* ************************************************************************ */
+int board_pre_init (void)
+/* ------------------------------------------------------------------------ --
+ * Purpose     :
+ * Remarks     :
+ * Restrictions:
+ * See also    :
+ * Example     :
+ * ************************************************************************ */
+{
+	unsigned long i;
+
+   /*-------------------------------------------------------------------------+
+   | Interrupt controller setup for the Walnut board.
+   | Note: IRQ 0-15  405GP internally generated; active high; level sensitive
+   |       IRQ 16    405GP internally generated; active low; level sensitive
+   |       IRQ 17-24 RESERVED
+   |       IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive
+   |       IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive
+   |       IRQ 27 (EXT IRQ 2) Not Used
+   |       IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
+   |       IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
+   |       IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
+   |       IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
+   | Note for Walnut board:
+   |       An interrupt taken for the FPGA (IRQ 25) indicates that either
+   |       the Mouse, Keyboard, IRDA, or External Expansion caused the
+   |       interrupt. The FPGA must be read to determine which device
+   |       caused the interrupt. The default setting of the FPGA clears
+   |
+   +-------------------------------------------------------------------------*/
+
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr (uicer, 0x00000000);	/* disable all ints */
+	mtdcr (uiccr, 0x00000020);	/* set all but FPGA SMI to be non-critical */
+	mtdcr (uicpr, 0xFFFFFF90);	/* set int polarities */
+	mtdcr (uictr, 0x10000000);	/* set int trigger levels */
+	mtdcr (uicvcr, 0x00000001);	/* set vect base=0,INT0 highest priority */
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+
+	/* Perform reset of PHY connected to PPC via register in CPLD */
+	out8 (PHY_CTRL_ADDR, 0x2e);	/* activate nRESET,FDX,F100,ANEN, enable output */
+	for (i = 0; i < 10000000; i++) {
+		;
+	}
+	out8 (PHY_CTRL_ADDR, 0x2f);	/* deactivate nRESET */
+
+	return 0;
+}
+
+
+/* ************************************************************************ */
+int checkboard (void)
+/* ------------------------------------------------------------------------ --
+ * Purpose     :
+ * Remarks     :
+ * Restrictions:
+ * See also    :
+ * Example     :
+ * ************************************************************************ */
+{
+	printf ("Exbit H/W id: %d\n", in8 (HW_ID_ADDR));
+	return (0);
+}
+
+/* ************************************************************************ */
+long int initdram (int board_type)
+/* ------------------------------------------------------------------------ --
+ * Purpose     : Determines size of mounted DRAM.
+ * Remarks     : Size is determined by reading SDRAM configuration registers as
+ *               set up by sdram_init.
+ * Restrictions:
+ * See also    :
+ * Example     :
+ * ************************************************************************ */
+{
+	ulong tot_size;
+	ulong bank_size;
+	ulong tmp;
+
+	tot_size = 0;
+
+	mtdcr (memcfga, mem_mb0cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (memcfga, mem_mb1cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (memcfga, mem_mb2cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (memcfga, mem_mb3cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	return tot_size;
+}