Merge branch 'master' of git://git.denx.de/u-boot-mips

16 files changed, 884 insertions, 60 deletions

diff --git a/arch/mips/cpu/mips32/cache.S b/arch/mips/cpu/mips32/cache.S
index e683e8be8..64dfad026 100644
--- a/arch/mips/cpu/mips32/cache.S
+++ b/arch/mips/cpu/mips32/cache.S
@@ -85,17 +85,17 @@ LEAF(mips_init_icache)
 	/* clear tag to invalidate */
 	PTR_LI		t0, INDEX_BASE
 	PTR_ADDU	t1, t0, a1
-1:	cache_op	Index_Store_Tag_I t0
+1:	cache_op	INDEX_STORE_TAG_I t0
 	PTR_ADDU	t0, a2
 	bne		t0, t1, 1b
 	/* fill once, so data field parity is correct */
 	PTR_LI		t0, INDEX_BASE
-2:	cache_op	Fill t0
+2:	cache_op	FILL t0
 	PTR_ADDU	t0, a2
 	bne		t0, t1, 2b
 	/* invalidate again - prudent but not strictly neccessary */
 	PTR_LI		t0, INDEX_BASE
-1:	cache_op	Index_Store_Tag_I t0
+1:	cache_op	INDEX_STORE_TAG_I t0
 	PTR_ADDU	t0, a2
 	bne		t0, t1, 1b
 9:	jr		ra
@@ -110,7 +110,7 @@ LEAF(mips_init_dcache)
 	/* clear all tags */
 	PTR_LI		t0, INDEX_BASE
 	PTR_ADDU	t1, t0, a1
-1:	cache_op	Index_Store_Tag_D t0
+1:	cache_op	INDEX_STORE_TAG_D t0
 	PTR_ADDU	t0, a2
 	bne		t0, t1, 1b
 	/* load from each line (in cached space) */
@@ -120,7 +120,7 @@ LEAF(mips_init_dcache)
 	bne		t0, t1, 2b
 	/* clear all tags */
 	PTR_LI		t0, INDEX_BASE
-1:	cache_op	Index_Store_Tag_D t0
+1:	cache_op	INDEX_STORE_TAG_D t0
 	PTR_ADDU	t0, a2
 	bne		t0, t1, 1b
 9:	jr		ra
diff --git a/arch/mips/cpu/mips32/cpu.c b/arch/mips/cpu/mips32/cpu.c
index 7b49e1b61..50bb248bd 100644
--- a/arch/mips/cpu/mips32/cpu.c
+++ b/arch/mips/cpu/mips32/cpu.c
@@ -61,8 +61,8 @@ void flush_cache(ulong start_addr, ulong size)
 		return;
 
 	while (1) {
-		cache_op(Hit_Writeback_Inv_D, addr);
-		cache_op(Hit_Invalidate_I, addr);
+		cache_op(HIT_WRITEBACK_INV_D, addr);
+		cache_op(HIT_INVALIDATE_I, addr);
 		if (addr == aend)
 			break;
 		addr += lsize;
@@ -76,7 +76,7 @@ void flush_dcache_range(ulong start_addr, ulong stop)
 	unsigned long aend = (stop - 1) & ~(lsize - 1);
 
 	while (1) {
-		cache_op(Hit_Writeback_Inv_D, addr);
+		cache_op(HIT_WRITEBACK_INV_D, addr);
 		if (addr == aend)
 			break;
 		addr += lsize;
@@ -90,7 +90,7 @@ void invalidate_dcache_range(ulong start_addr, ulong stop)
 	unsigned long aend = (stop - 1) & ~(lsize - 1);
 
 	while (1) {
-		cache_op(Hit_Invalidate_D, addr);
+		cache_op(HIT_INVALIDATE_D, addr);
 		if (addr == aend)
 			break;
 		addr += lsize;
diff --git a/arch/mips/cpu/mips64/Makefile b/arch/mips/cpu/mips64/Makefile
new file mode 100644
index 000000000..be3866484
--- /dev/null
+++ b/arch/mips/cpu/mips64/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# 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.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(CPU).o
+
+START	= start.o
+COBJS-y	= cpu.o interrupts.o time.o cache.o
+
+SRCS	:= $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
+START	:= $(addprefix $(obj),$(START))
+
+all:	$(obj).depend $(START) $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
diff --git a/arch/mips/cpu/mips64/cache.S b/arch/mips/cpu/mips64/cache.S
new file mode 100644
index 000000000..036f035d9
--- /dev/null
+++ b/arch/mips/cpu/mips64/cache.S
@@ -0,0 +1,229 @@
+/*
+ *  Cache-handling routined for MIPS CPUs
+ *
+ *  Copyright (c) 2003	Wolfgang Denk <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <asm-offsets.h>
+#include <config.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/cacheops.h>
+
+#define RA		t9
+
+/*
+ * 16kB is the maximum size of instruction and data caches on MIPS 4K,
+ * 64kB is on 4KE, 24K, 5K, etc. Set bigger size for convenience.
+ *
+ * Note that the above size is the maximum size of primary cache. U-Boot
+ * doesn't have L2 cache support for now.
+ */
+#define MIPS_MAX_CACHE_SIZE	0x10000
+
+#define INDEX_BASE	CKSEG0
+
+	.macro	cache_op op addr
+	.set	push
+	.set	noreorder
+	.set	mips3
+	cache	\op, 0(\addr)
+	.set	pop
+	.endm
+
+	.macro	f_fill64 dst, offset, val
+	LONG_S	\val, (\offset +  0 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  1 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  2 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  3 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  4 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  5 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  6 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  7 * LONGSIZE)(\dst)
+#if LONGSIZE == 4
+	LONG_S	\val, (\offset +  8 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset +  9 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset + 10 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset + 11 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset + 12 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset + 13 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset + 14 * LONGSIZE)(\dst)
+	LONG_S	\val, (\offset + 15 * LONGSIZE)(\dst)
+#endif
+	.endm
+
+/*
+ * mips_init_icache(uint PRId, ulong icache_size, unchar icache_linesz)
+ */
+LEAF(mips_init_icache)
+	blez		a1, 9f
+	mtc0		zero, CP0_TAGLO
+	/* clear tag to invalidate */
+	PTR_LI		t0, INDEX_BASE
+	PTR_ADDU	t1, t0, a1
+1:	cache_op	INDEX_STORE_TAG_I t0
+	PTR_ADDU	t0, a2
+	bne		t0, t1, 1b
+	/* fill once, so data field parity is correct */
+	PTR_LI		t0, INDEX_BASE
+2:	cache_op	FILL t0
+	PTR_ADDU	t0, a2
+	bne		t0, t1, 2b
+	/* invalidate again - prudent but not strictly neccessary */
+	PTR_LI		t0, INDEX_BASE
+1:	cache_op	INDEX_STORE_TAG_I t0
+	PTR_ADDU	t0, a2
+	bne		t0, t1, 1b
+9:	jr		ra
+	END(mips_init_icache)
+
+/*
+ * mips_init_dcache(uint PRId, ulong dcache_size, unchar dcache_linesz)
+ */
+LEAF(mips_init_dcache)
+	blez		a1, 9f
+	mtc0		zero, CP0_TAGLO
+	/* clear all tags */
+	PTR_LI		t0, INDEX_BASE
+	PTR_ADDU	t1, t0, a1
+1:	cache_op	INDEX_STORE_TAG_D t0
+	PTR_ADDU	t0, a2
+	bne		t0, t1, 1b
+	/* load from each line (in cached space) */
+	PTR_LI		t0, INDEX_BASE
+2:	LONG_L		zero, 0(t0)
+	PTR_ADDU	t0, a2
+	bne		t0, t1, 2b
+	/* clear all tags */
+	PTR_LI		t0, INDEX_BASE
+1:	cache_op	INDEX_STORE_TAG_D t0
+	PTR_ADDU	t0, a2
+	bne		t0, t1, 1b
+9:	jr		ra
+	END(mips_init_dcache)
+
+/*
+ * mips_cache_reset - low level initialisation of the primary caches
+ *
+ * This routine initialises the primary caches to ensure that they have good
+ * parity.  It must be called by the ROM before any cached locations are used
+ * to prevent the possibility of data with bad parity being written to memory.
+ *
+ * To initialise the instruction cache it is essential that a source of data
+ * with good parity is available. This routine will initialise an area of
+ * memory starting at location zero to be used as a source of parity.
+ *
+ * RETURNS: N/A
+ *
+ */
+NESTED(mips_cache_reset, 0, ra)
+	move	RA, ra
+	li	t2, CONFIG_SYS_ICACHE_SIZE
+	li	t3, CONFIG_SYS_DCACHE_SIZE
+	li	t8, CONFIG_SYS_CACHELINE_SIZE
+
+	li	v0, MIPS_MAX_CACHE_SIZE
+
+	/*
+	 * Now clear that much memory starting from zero.
+	 */
+	PTR_LI		a0, CKSEG1
+	PTR_ADDU	a1, a0, v0
+2:	PTR_ADDIU	a0, 64
+	f_fill64	a0, -64, zero
+	bne		a0, a1, 2b
+
+	/*
+	 * The caches are probably in an indeterminate state,
+	 * so we force good parity into them by doing an
+	 * invalidate, load/fill, invalidate for each line.
+	 */
+
+	/*
+	 * Assume bottom of RAM will generate good parity for the cache.
+	 */
+
+	/*
+	 * Initialize the I-cache first,
+	 */
+	move	a1, t2
+	move	a2, t8
+	PTR_LA	v1, mips_init_icache
+	jalr	v1
+
+	/*
+	 * then initialize D-cache.
+	 */
+	move	a1, t3
+	move	a2, t8
+	PTR_LA	v1, mips_init_dcache
+	jalr	v1
+
+	jr	RA
+	END(mips_cache_reset)
+
+/*
+ * dcache_status - get cache status
+ *
+ * RETURNS: 0 - cache disabled; 1 - cache enabled
+ *
+ */
+LEAF(dcache_status)
+	mfc0	t0, CP0_CONFIG
+	li	t1, CONF_CM_UNCACHED
+	andi	t0, t0, CONF_CM_CMASK
+	move	v0, zero
+	beq	t0, t1, 2f
+	li	v0, 1
+2:	jr	ra
+	END(dcache_status)
+
+/*
+ * dcache_disable - disable cache
+ *
+ * RETURNS: N/A
+ *
+ */
+LEAF(dcache_disable)
+	mfc0	t0, CP0_CONFIG
+	li	t1, -8
+	and	t0, t0, t1
+	ori	t0, t0, CONF_CM_UNCACHED
+	mtc0	t0, CP0_CONFIG
+	jr	ra
+	END(dcache_disable)
+
+/*
+ * dcache_enable - enable cache
+ *
+ * RETURNS: N/A
+ *
+ */
+LEAF(dcache_enable)
+	mfc0	t0, CP0_CONFIG
+	ori	t0, CONF_CM_CMASK
+	xori	t0, CONF_CM_CMASK
+	ori	t0, CONF_CM_CACHABLE_NONCOHERENT
+	mtc0	t0, CP0_CONFIG
+	jr	ra
+	END(dcache_enable)
diff --git a/arch/mips/cpu/mips64/config.mk b/arch/mips/cpu/mips64/config.mk
new file mode 100644
index 000000000..ebc1ceb83
--- /dev/null
+++ b/arch/mips/cpu/mips64/config.mk
@@ -0,0 +1,40 @@
+#
+# (C) Copyright 2003
+# Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# 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.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+#
+# Default optimization level for MIPS64
+#
+# Note: Toolchains with binutils prior to v2.16
+# are no longer supported by U-Boot MIPS tree!
+#
+MIPSFLAGS = -march=mips64
+
+PLATFORM_CPPFLAGS += $(MIPSFLAGS)
+PLATFORM_CPPFLAGS += -mabi=64 -DCONFIG_64BIT
+ifdef CONFIG_SYS_BIG_ENDIAN
+PLATFORM_LDFLAGS  += -m elf64btsmip
+else
+PLATFORM_LDFLAGS  += -m elf64ltsmip
+endif
+
+CONFIG_STANDALONE_LOAD_ADDR ?= 0xffffffff80200000 -T mips64.lds
diff --git a/arch/mips/cpu/mips64/cpu.c b/arch/mips/cpu/mips64/cpu.c
new file mode 100644
index 000000000..2a38d0c8d
--- /dev/null
+++ b/arch/mips/cpu/mips64/cpu.c
@@ -0,0 +1,111 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <netdev.h>
+#include <asm/mipsregs.h>
+#include <asm/cacheops.h>
+#include <asm/reboot.h>
+
+#define cache_op(op, addr)						\
+	__asm__ __volatile__(						\
+	"	.set	push\n"						\
+	"	.set	noreorder\n"					\
+	"	.set	mips64\n"					\
+	"	cache	%0, %1\n"					\
+	"	.set	pop\n"						\
+	:								\
+	: "i" (op), "R" (*(unsigned char *)(addr)))
+
+void __attribute__((weak)) _machine_restart(void)
+{
+	fprintf(stderr, "*** reset failed ***\n");
+
+	while (1)
+		/* NOP */;
+}
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	_machine_restart();
+
+	return 0;
+}
+
+void flush_cache(ulong start_addr, ulong size)
+{
+	unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
+	unsigned long addr = start_addr & ~(lsize - 1);
+	unsigned long aend = (start_addr + size - 1) & ~(lsize - 1);
+
+	/* aend will be miscalculated when size is zero, so we return here */
+	if (size == 0)
+		return;
+
+	while (1) {
+		cache_op(HIT_WRITEBACK_INV_D, addr);
+		cache_op(HIT_INVALIDATE_I, addr);
+		if (addr == aend)
+			break;
+		addr += lsize;
+	}
+}
+
+void flush_dcache_range(ulong start_addr, ulong stop)
+{
+	unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
+	unsigned long addr = start_addr & ~(lsize - 1);
+	unsigned long aend = (stop - 1) & ~(lsize - 1);
+
+	while (1) {
+		cache_op(HIT_WRITEBACK_INV_D, addr);
+		if (addr == aend)
+			break;
+		addr += lsize;
+	}
+}
+
+void invalidate_dcache_range(ulong start_addr, ulong stop)
+{
+	unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
+	unsigned long addr = start_addr & ~(lsize - 1);
+	unsigned long aend = (stop - 1) & ~(lsize - 1);
+
+	while (1) {
+		cache_op(HIT_INVALIDATE_D, addr);
+		if (addr == aend)
+			break;
+		addr += lsize;
+	}
+}
+
+void write_one_tlb(int index, u32 pagemask, u32 hi, u32 low0, u32 low1)
+{
+	write_c0_entrylo0(low0);
+	write_c0_pagemask(pagemask);
+	write_c0_entrylo1(low1);
+	write_c0_entryhi(hi);
+	write_c0_index(index);
+	tlb_write_indexed();
+}
diff --git a/arch/mips/cpu/mips64/interrupts.c b/arch/mips/cpu/mips64/interrupts.c
new file mode 100644
index 000000000..e4e9aae0c
--- /dev/null
+++ b/arch/mips/cpu/mips64/interrupts.c
@@ -0,0 +1,34 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/mipsregs.h>
+
+void enable_interrupts(void)
+{
+}
+
+int disable_interrupts(void)
+{
+	return 0;
+}
diff --git a/arch/mips/cpu/mips64/start.S b/arch/mips/cpu/mips64/start.S
new file mode 100644
index 000000000..4112de702
--- /dev/null
+++ b/arch/mips/cpu/mips64/start.S
@@ -0,0 +1,256 @@
+/*
+ *  Startup Code for MIPS64 CPU-core
+ *
+ *  Copyright (c) 2003	Wolfgang Denk <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 dlater version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICUdlaR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Pdlace, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <asm-offsets.h>
+#include <config.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+
+#ifndef CONFIG_SYS_MIPS_CACHE_MODE
+#define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT
+#endif
+
+	/*
+	 * For the moment disable interrupts, mark the kernel mode and
+	 * set ST0_KX so that the CPU does not spit fire when using
+	 * 64-bit addresses.
+	 */
+	.macro	setup_c0_status set clr
+	.set	push
+	mfc0	t0, CP0_STATUS
+	or	t0, ST0_CU0 | \set | 0x1f | \clr
+	xor	t0, 0x1f | \clr
+	mtc0	t0, CP0_STATUS
+	.set	noreorder
+	sll	zero, 3				# ehb
+	.set	pop
+	.endm
+
+	.set noreorder
+
+	.globl _start
+	.text
+_start:
+	.org 0x000
+	b	reset
+	 nop
+	.org 0x080
+	b	romReserved
+	 nop
+	.org 0x100
+	b	romReserved
+	 nop
+	.org 0x180
+	b	romReserved
+	 nop
+	.org 0x200
+	b	romReserved
+	 nop
+	.org 0x280
+	b	romReserved
+	 nop
+	.org 0x300
+	b	romReserved
+	 nop
+	.org 0x380
+	b	romReserved
+	 nop
+	.org 0x480
+	b	romReserved
+	 nop
+
+	/*
+	 * We hope there are no more reserved vectors!
+	 * 128 * 8 == 1024 == 0x400
+	 * so this is address R_VEC+0x400 == 0xbfc00400
+	 */
+	.org 0x500
+	.align 4
+reset:
+
+	/* Clear watch registers */
+	dmtc0	zero, CP0_WATCHLO
+	dmtc0	zero, CP0_WATCHHI
+
+	/* WP(Watch Pending), SW0/1 should be cleared */
+	mtc0	zero, CP0_CAUSE
+
+	setup_c0_status ST0_KX 0
+
+	/* Init Timer */
+	mtc0	zero, CP0_COUNT
+	mtc0	zero, CP0_COMPARE
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+	/* CONFIG0 register */
+	dli	t0, CONF_CM_UNCACHED
+	mtc0	t0, CP0_CONFIG
+#endif
+
+	/* Initialize $gp */
+	bal	1f
+	 nop
+	.dword	_gp
+1:
+	ld	gp, 0(ra)
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+	/* Initialize any external memory */
+	dla	t9, lowlevel_init
+	jalr	t9
+	 nop
+
+	/* Initialize caches... */
+	dla	t9, mips_cache_reset
+	jalr	t9
+	 nop
+
+	/* ... and enable them */
+	dli	t0, CONFIG_SYS_MIPS_CACHE_MODE
+	mtc0	t0, CP0_CONFIG
+#endif
+
+	/* Set up temporary stack */
+	dli	t0, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
+	dla	sp, 0(t0)
+
+	dla	t9, board_init_f
+	jr	t9
+	 nop
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * a0 = addr_sp
+ * a1 = gd
+ * a2 = destination address
+ */
+	.globl	relocate_code
+	.ent	relocate_code
+relocate_code:
+	move	sp, a0			# set new stack pointer
+
+	dli	t0, CONFIG_SYS_MONITOR_BASE
+	dla	t3, in_ram
+	ld	t2, -24(t3)		# t2 <-- uboot_end_data
+	move	t1, a2
+	move	s2, a2			# s2 <-- destination address
+
+	/*
+	 * Fix $gp:
+	 *
+	 * New $gp = (Old $gp - CONFIG_SYS_MONITOR_BASE) + Destination Address
+	 */
+	move	t8, gp
+	dsub	gp, CONFIG_SYS_MONITOR_BASE
+	dadd	gp, a2			# gp now adjusted
+	dsub	s1, gp, t8		# s1 <-- relocation offset
+
+	/*
+	 * t0 = source address
+	 * t1 = target address
+	 * t2 = source end address
+	 */
+
+	/*
+	 * Save destination address and size for dlater usage in flush_cache()
+	 */
+	move	s0, a1			# save gd in s0
+	move	a0, t1			# a0 <-- destination addr
+	dsub	a1, t2, t0		# a1 <-- size
+
+1:
+	lw	t3, 0(t0)
+	sw	t3, 0(t1)
+	daddu	t0, 4
+	ble	t0, t2, 1b
+	 daddu	t1, 4
+
+	/* If caches were enabled, we would have to flush them here. */
+
+	/* a0 & a1 are already set up for flush_cache(start, size) */
+	dla	t9, flush_cache
+	jalr	t9
+	 nop
+
+	/* Jump to where we've relocated ourselves */
+	daddi	t0, s2, in_ram - _start
+	jr	t0
+	 nop
+
+	.dword	_gp
+	.dword	_GLOBAL_OFFSET_TABLE_
+	.dword	uboot_end_data
+	.dword	uboot_end
+	.dword	num_got_entries
+
+in_ram:
+	/*
+	 * Now we want to update GOT.
+	 *
+	 * GOT[0] is reserved. GOT[1] is also reserved for the dynamic object
+	 * generated by GNU ld. Skip these reserved entries from relocation.
+	 */
+	ld	t3, -8(t0)		# t3 <-- num_got_entries
+	ld	t8, -32(t0)		# t8 <-- _GLOBAL_OFFSET_TABLE_
+	ld	t9, -40(t0)		# t9 <-- _gp
+	dsub	t8, t9			# compute offset
+	dadd	t8, t8, gp		# t8 now holds relocated _G_O_T_
+	daddi	t8, t8, 16		# skipping first two entries
+	dli	t2, 2
+1:
+	ld	t1, 0(t8)
+	beqz	t1, 2f
+	 dadd	t1, s1
+	sd	t1, 0(t8)
+2:
+	daddi	t2, 1
+	blt	t2, t3, 1b
+	 daddi	t8, 8
+
+	/* Clear BSS */
+	ld	t1, -24(t0)		# t1 <-- uboot_end_data
+	ld	t2, -16(t0)		# t2 <-- uboot_end
+	dadd	t1, s1			# adjust pointers
+	dadd	t2, s1
+
+	dsub	t1, 8
+1:
+	daddi	t1, 8
+	bltl	t1, t2, 1b
+	 sd	zero, 0(t1)
+
+	move	a0, s0			# a0 <-- gd
+	dla	t9, board_init_r
+	jr	t9
+	 move	a1, s2
+
+	.end	relocate_code
+
+	/* Exception handlers */
+romReserved:
+	b	romReserved
diff --git a/arch/mips/cpu/mips64/time.c b/arch/mips/cpu/mips64/time.c
new file mode 100644
index 000000000..51542808d
--- /dev/null
+++ b/arch/mips/cpu/mips64/time.c
@@ -0,0 +1,87 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/mipsregs.h>
+
+static unsigned long timestamp;
+
+/* how many counter cycles in a jiffy */
+#define CYCLES_PER_JIFFY	 \
+	(CONFIG_SYS_MIPS_TIMER_FREQ + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ
+
+/*
+ * timer without interrupts
+ */
+
+int timer_init(void)
+{
+	/* Set up the timer for the first expiration. */
+	timestamp = 0;
+	write_c0_compare(read_c0_count() + CYCLES_PER_JIFFY);
+
+	return 0;
+}
+
+ulong get_timer(ulong base)
+{
+	unsigned int count;
+	unsigned int expirelo = read_c0_compare();
+
+	/* Check to see if we have missed any timestamps. */
+	count = read_c0_count();
+	while ((count - expirelo) < 0x7fffffff) {
+		expirelo += CYCLES_PER_JIFFY;
+		timestamp++;
+	}
+	write_c0_compare(expirelo);
+
+	return timestamp - base;
+}
+
+void __udelay(unsigned long usec)
+{
+	unsigned int tmo;
+
+	tmo = read_c0_count() + (usec * (CONFIG_SYS_MIPS_TIMER_FREQ / 1000000));
+	while ((tmo - read_c0_count()) < 0x7fffffff)
+		/*NOP*/;
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On MIPS it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On MIPS it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+	return CONFIG_SYS_HZ;
+}
diff --git a/arch/mips/cpu/xburst/cpu.c b/arch/mips/cpu/xburst/cpu.c
index ddcbfaa47..cc190dfe5 100644
--- a/arch/mips/cpu/xburst/cpu.c
+++ b/arch/mips/cpu/xburst/cpu.c
@@ -84,8 +84,8 @@ void flush_cache(ulong start_addr, ulong size)
 	unsigned long aend = (start_addr + size - 1) & ~(lsize - 1);
 
 	for (; addr <= aend; addr += lsize) {
-		cache_op(Hit_Writeback_Inv_D, addr);
-		cache_op(Hit_Invalidate_I, addr);
+		cache_op(HIT_WRITEBACK_INV_D, addr);
+		cache_op(HIT_INVALIDATE_I, addr);
 	}
 }
 
@@ -96,7 +96,7 @@ void flush_dcache_range(ulong start_addr, ulong stop)
 	unsigned long aend = (stop - 1) & ~(lsize - 1);
 
 	for (; addr <= aend; addr += lsize)
-		cache_op(Hit_Writeback_Inv_D, addr);
+		cache_op(HIT_WRITEBACK_INV_D, addr);
 }
 
 void invalidate_dcache_range(ulong start_addr, ulong stop)
@@ -106,7 +106,7 @@ void invalidate_dcache_range(ulong start_addr, ulong stop)
 	unsigned long aend = (stop - 1) & ~(lsize - 1);
 
 	for (; addr <= aend; addr += lsize)
-		cache_op(Hit_Invalidate_D, addr);
+		cache_op(HIT_INVALIDATE_D, addr);
 }
 
 void flush_icache_all(void)
@@ -118,7 +118,7 @@ void flush_icache_all(void)
 
 	for (addr = CKSEG0; addr < CKSEG0 + CONFIG_SYS_ICACHE_SIZE;
 	     addr += CONFIG_SYS_CACHELINE_SIZE) {
-		cache_op(Index_Store_Tag_I, addr);
+		cache_op(INDEX_STORE_TAG_I, addr);
 	}
 
 	/* invalidate btb */
@@ -139,7 +139,7 @@ void flush_dcache_all(void)
 
 	for (addr = CKSEG0; addr < CKSEG0 + CONFIG_SYS_DCACHE_SIZE;
 	     addr += CONFIG_SYS_CACHELINE_SIZE) {
-		cache_op(Index_Writeback_Inv_D, addr);
+		cache_op(INDEX_WRITEBACK_INV_D, addr);
 	}
 
 	__asm__ __volatile__("sync");
diff --git a/arch/mips/cpu/xburst/start.S b/arch/mips/cpu/xburst/start.S
index d846104d1..3a8280cb0 100644
--- a/arch/mips/cpu/xburst/start.S
+++ b/arch/mips/cpu/xburst/start.S
@@ -96,7 +96,7 @@ relocate_code:
 	li	t0, KSEG0
 	addi	t1, t0, CONFIG_SYS_DCACHE_SIZE
 2:
-	cache	Index_Writeback_Inv_D, 0(t0)
+	cache	INDEX_WRITEBACK_INV_D, 0(t0)
 	bne	t0, t1, 2b
 	 addi	t0, CONFIG_SYS_CACHELINE_SIZE
 
@@ -106,7 +106,7 @@ relocate_code:
 	li	t0, KSEG0
 	addi	t1, t0, CONFIG_SYS_ICACHE_SIZE
 3:
-	cache	Index_Invalidate_I, 0(t0)
+	cache	INDEX_INVALIDATE_I, 0(t0)
 	bne	t0, t1, 3b
 	 addi	t0, CONFIG_SYS_CACHELINE_SIZE
 
diff --git a/arch/mips/include/asm/addrspace.h b/arch/mips/include/asm/addrspace.h
index 3a1e6d615..b768bb508 100644
--- a/arch/mips/include/asm/addrspace.h
+++ b/arch/mips/include/asm/addrspace.h
@@ -136,7 +136,7 @@
    cannot access physical memory directly from core */
 #define UNCACHED_SDRAM(a) (((unsigned long)(a)) | 0x20000000)
 #else	/* !CONFIG_SOC_AU1X00 */
-#define UNCACHED_SDRAM(a) KSEG1ADDR(a)
+#define UNCACHED_SDRAM(a) CKSEG1ADDR(a)
 #endif	/* CONFIG_SOC_AU1X00 */
 #endif	/* __ASSEMBLY__ */
 
diff --git a/arch/mips/include/asm/asm.h b/arch/mips/include/asm/asm.h
index 608cfcfbb..933ccb1b7 100644
--- a/arch/mips/include/asm/asm.h
+++ b/arch/mips/include/asm/asm.h
@@ -401,7 +401,7 @@ symbol		=	value
 #ifdef CONFIG_SGI_IP28
 /* Inhibit speculative stores to volatile (e.g.DMA) or invalid addresses. */
 #include <asm/cacheops.h>
-#define R10KCBARRIER(addr)  cache   Cache_Barrier, addr;
+#define R10KCBARRIER(addr)  cache   CACHE_BARRIER, addr;
 #else
 #define R10KCBARRIER(addr)
 #endif
diff --git a/arch/mips/include/asm/cacheops.h b/arch/mips/include/asm/cacheops.h
index 70bcad769..6464250d8 100644
--- a/arch/mips/include/asm/cacheops.h
+++ b/arch/mips/include/asm/cacheops.h
@@ -14,54 +14,54 @@
 /*
  * Cache Operations available on all MIPS processors with R4000-style caches
  */
-#define Index_Invalidate_I      0x00
-#define Index_Writeback_Inv_D   0x01
-#define Index_Load_Tag_I	0x04
-#define Index_Load_Tag_D	0x05
-#define Index_Store_Tag_I	0x08
-#define Index_Store_Tag_D	0x09
+#define INDEX_INVALIDATE_I      0x00
+#define INDEX_WRITEBACK_INV_D   0x01
+#define INDEX_LOAD_TAG_I	0x04
+#define INDEX_LOAD_TAG_D	0x05
+#define INDEX_STORE_TAG_I	0x08
+#define INDEX_STORE_TAG_D	0x09
 #if defined(CONFIG_CPU_LOONGSON2)
-#define Hit_Invalidate_I	0x00
+#define HIT_INVALIDATE_I	0x00
 #else
-#define Hit_Invalidate_I	0x10
+#define HIT_INVALIDATE_I	0x10
 #endif
-#define Hit_Invalidate_D	0x11
-#define Hit_Writeback_Inv_D	0x15
+#define HIT_INVALIDATE_D	0x11
+#define HIT_WRITEBACK_INV_D	0x15
 
 /*
  * R4000-specific cacheops
  */
-#define Create_Dirty_Excl_D	0x0d
-#define Fill			0x14
-#define Hit_Writeback_I		0x18
-#define Hit_Writeback_D		0x19
+#define CREATE_DIRTY_EXCL_D	0x0d
+#define FILL			0x14
+#define HIT_WRITEBACK_I		0x18
+#define HIT_WRITEBACK_D		0x19
 
 /*
  * R4000SC and R4400SC-specific cacheops
  */
-#define Index_Invalidate_SI     0x02
-#define Index_Writeback_Inv_SD  0x03
-#define Index_Load_Tag_SI	0x06
-#define Index_Load_Tag_SD	0x07
-#define Index_Store_Tag_SI	0x0A
-#define Index_Store_Tag_SD	0x0B
-#define Create_Dirty_Excl_SD	0x0f
-#define Hit_Invalidate_SI	0x12
-#define Hit_Invalidate_SD	0x13
-#define Hit_Writeback_Inv_SD	0x17
-#define Hit_Writeback_SD	0x1b
-#define Hit_Set_Virtual_SI	0x1e
-#define Hit_Set_Virtual_SD	0x1f
+#define INDEX_INVALIDATE_SI     0x02
+#define INDEX_WRITEBACK_INV_SD  0x03
+#define INDEX_LOAD_TAG_SI	0x06
+#define INDEX_LOAD_TAG_SD	0x07
+#define INDEX_STORE_TAG_SI	0x0A
+#define INDEX_STORE_TAG_SD	0x0B
+#define CREATE_DIRTY_EXCL_SD	0x0f
+#define HIT_INVALIDATE_SI	0x12
+#define HIT_INVALIDATE_SD	0x13
+#define HIT_WRITEBACK_INV_SD	0x17
+#define HIT_WRITEBACK_SD	0x1b
+#define HIT_SET_VIRTUAL_SI	0x1e
+#define HIT_SET_VIRTUAL_SD	0x1f
 
 /*
  * R5000-specific cacheops
  */
-#define R5K_Page_Invalidate_S	0x17
+#define R5K_PAGE_INVALIDATE_S	0x17
 
 /*
  * RM7000-specific cacheops
  */
-#define Page_Invalidate_T	0x16
+#define PAGE_INVALIDATE_T	0x16
 
 /*
  * R10000-specific cacheops
@@ -69,17 +69,17 @@
  * Cacheops 0x02, 0x06, 0x0a, 0x0c-0x0e, 0x16, 0x1a and 0x1e are unused.
  * Most of the _S cacheops are identical to the R4000SC _SD cacheops.
  */
-#define Index_Writeback_Inv_S	0x03
-#define Index_Load_Tag_S	0x07
-#define Index_Store_Tag_S	0x0B
-#define Hit_Invalidate_S	0x13
-#define Cache_Barrier		0x14
-#define Hit_Writeback_Inv_S	0x17
-#define Index_Load_Data_I	0x18
-#define Index_Load_Data_D	0x19
-#define Index_Load_Data_S	0x1b
-#define Index_Store_Data_I	0x1c
-#define Index_Store_Data_D	0x1d
-#define Index_Store_Data_S	0x1f
+#define INDEX_WRITEBACK_INV_S	0x03
+#define INDEX_LOAD_TAG_S	0x07
+#define INDEX_STORE_TAG_S	0x0B
+#define HIT_INVALIDATE_S	0x13
+#define CACHE_BARRIER		0x14
+#define HIT_WRITEBACK_INV_S	0x17
+#define INDEX_LOAD_DATA_I	0x18
+#define INDEX_LOAD_DATA_D	0x19
+#define INDEX_LOAD_DATA_S	0x1b
+#define INDEX_STORE_DATA_I	0x1c
+#define INDEX_STORE_DATA_D	0x1d
+#define INDEX_STORE_DATA_S	0x1f
 
 #endif	/* __ASM_CACHEOPS_H */
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 025012ae6..80eab75e1 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -120,12 +120,20 @@ static inline void set_io_port_base(unsigned long base)
  */
 extern inline phys_addr_t virt_to_phys(volatile void * address)
 {
+#ifndef CONFIG_64BIT
 	return CPHYSADDR(address);
+#else
+	return XPHYSADDR(address);
+#endif
 }
 
 extern inline void * phys_to_virt(unsigned long address)
 {
+#ifndef CONFIG_64BIT
 	return (void *)KSEG0ADDR(address);
+#else
+	return (void *)CKSEG0ADDR(address);
+#endif
 }
 
 /*
@@ -133,12 +141,20 @@ extern inline void * phys_to_virt(unsigned long address)
  */
 extern inline unsigned long virt_to_bus(volatile void * address)
 {
+#ifndef CONFIG_64BIT
 	return CPHYSADDR(address);
+#else
+	return XPHYSADDR(address);
+#endif
 }
 
 extern inline void * bus_to_virt(unsigned long address)
 {
+#ifndef CONFIG_64BIT
 	return (void *)KSEG0ADDR(address);
+#else
+	return (void *)CKSEG0ADDR(address);
+#endif
 }
 
 /*
diff --git a/arch/mips/include/asm/posix_types.h b/arch/mips/include/asm/posix_types.h
index 879aae210..4deac5207 100644
--- a/arch/mips/include/asm/posix_types.h
+++ b/arch/mips/include/asm/posix_types.h
@@ -24,9 +24,15 @@ typedef int		__kernel_pid_t;
 typedef int		__kernel_ipc_pid_t;
 typedef int		__kernel_uid_t;
 typedef int		__kernel_gid_t;
+#if _MIPS_SZLONG != 64
 typedef unsigned int	__kernel_size_t;
 typedef int		__kernel_ssize_t;
 typedef int		__kernel_ptrdiff_t;
+#else
+typedef unsigned long	__kernel_size_t;
+typedef long		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
+#endif
 typedef long		__kernel_time_t;
 typedef long		__kernel_suseconds_t;
 typedef long		__kernel_clock_t;