diff --git a/include/asm-mips/dec/kn02ca.h b/include/asm-mips/dec/kn02ca.h
new file mode 100644
index 0000000..92c0fe2
--- /dev/null
+++ b/include/asm-mips/dec/kn02ca.h
@@ -0,0 +1,79 @@
+/*
+ *	include/asm-mips/dec/kn02ca.h
+ *
+ *	Personal DECstation 5000/xx (Maxine or KN02-CA) definitions.
+ *
+ *	Copyright (C) 2002, 2003  Maciej W. Rozycki
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+#ifndef __ASM_MIPS_DEC_KN02CA_H
+#define __ASM_MIPS_DEC_KN02CA_H
+
+#include <asm/dec/kn02xa.h>		/* For common definitions. */
+
+/*
+ * CPU interrupt bits.
+ */
+#define KN02CA_CPU_INR_HALT	6	/* HALT from ACCESS.Bus */
+#define KN02CA_CPU_INR_CASCADE	5	/* I/O ASIC cascade */
+#define KN02CA_CPU_INR_BUS	4	/* memory, I/O bus read/write errors */
+#define KN02CA_CPU_INR_RTC	3	/* DS1287 RTC */
+#define KN02CA_CPU_INR_TIMER	2	/* ARC periodic timer */
+
+/*
+ * I/O ASIC interrupt bits.  Star marks denote non-IRQ status bits.
+ */
+#define KN02CA_IO_INR_FLOPPY	15	/* 82077 FDC */
+#define KN02CA_IO_INR_NVRAM	14	/* (*) NVRAM clear jumper */
+#define KN02CA_IO_INR_POWERON	13	/* (*) ACCESS.Bus/power-on reset */
+#define KN02CA_IO_INR_TC0	12	/* TURBOchannel slot #0 */
+#define KN02CA_IO_INR_TIMER	12	/* ARC periodic timer (?) */
+#define KN02CA_IO_INR_ISDN	11	/* Am79C30A ISDN */
+#define KN02CA_IO_INR_NRMOD	10	/* (*) NRMOD manufacturing jumper */
+#define KN02CA_IO_INR_ASC	9	/* ASC (NCR53C94) SCSI */
+#define KN02CA_IO_INR_LANCE	8	/* LANCE (Am7990) Ethernet */
+#define KN02CA_IO_INR_HDFLOPPY	7	/* (*) HD (1.44MB) floppy status */
+#define KN02CA_IO_INR_SCC0	6	/* SCC (Z85C30) serial #0 */
+#define KN02CA_IO_INR_TC1	5	/* TURBOchannel slot #1 */
+#define KN02CA_IO_INR_XDFLOPPY	4	/* (*) XD (2.88MB) floppy status */
+#define KN02CA_IO_INR_VIDEO	3	/* framebuffer */
+#define KN02CA_IO_INR_XVIDEO	2	/* ~framebuffer */
+#define KN02CA_IO_INR_AB_XMIT	1	/* ACCESS.bus transmit */
+#define KN02CA_IO_INR_AB_RECV	0	/* ACCESS.bus receive */
+
+
+/*
+ * Memory Error Register bits.
+ */
+#define KN02CA_MER_INTR		(1<<27)		/* ARC IRQ status & ack */
+
+/*
+ * Memory Size Register bits.
+ */
+#define KN02CA_MSR_INTREN	(1<<26)		/* ARC periodic IRQ enable */
+#define KN02CA_MSR_MS10EN	(1<<25)		/* 10/1ms IRQ period select */
+#define KN02CA_MSR_PFORCE	(0xf<<21)	/* byte lane error force */
+#define KN02CA_MSR_MABEN	(1<<20)		/* A side VFB address enable */
+#define KN02CA_MSR_LASTBANK	(0x7<<17)	/* onboard RAM bank # */
+
+/*
+ * I/O ASIC System Support Register bits.
+ */
+#define KN03CA_IO_SSR_RES_14	(1<<14)		/* unused */
+#define KN03CA_IO_SSR_RES_13	(1<<13)		/* unused */
+#define KN03CA_IO_SSR_ISDN_RST	(1<<12)		/* ~ISDN (Am79C30A) reset */
+
+#define KN03CA_IO_SSR_FLOPPY_RST (1<<7)		/* ~FDC (82077) reset */
+#define KN03CA_IO_SSR_VIDEO_RST	(1<<6)		/* ~framebuffer reset */
+#define KN03CA_IO_SSR_AB_RST	(1<<5)		/* ACCESS.bus reset */
+#define KN03CA_IO_SSR_RES_4	(1<<4)		/* unused */
+#define KN03CA_IO_SSR_RES_3	(1<<4)		/* unused */
+#define KN03CA_IO_SSR_RES_2	(1<<2)		/* unused */
+#define KN03CA_IO_SSR_RES_1	(1<<1)		/* unused */
+#define KN03CA_IO_SSR_LED	(1<<0)		/* power LED */
+
+#endif /* __ASM_MIPS_DEC_KN02CA_H */