Remove MIPS architecture

The MIPS architecture port has been added 5+ years ago in order to
support a Chrome OS project that ended up going nowhere. No other board
has used it since and nobody is still willing or has the expertise and
hardware to maintain it. We have decided that it has become too much of
a mainenance burden and the chance of anyone ever reviving it seems too
slim at this point. This patch eliminates all MIPS code and
MIPS-specific hacks.

Change-Id: I5e49451cd055bbab0a15dcae5f53e0172e6e2ebe
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34919
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

25 files changed, 0 insertions, 1188 deletions

diff --git a/src/arch/mips/Kconfig b/src/arch/mips/Kconfig
deleted file mode 100644
index 9df514b21b..0000000000
--- a/src/arch/mips/Kconfig
+++ /dev/null
@@ -1,38 +0,0 @@
-#
-# This file is part of the coreboot 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; version 2 of
-# the License.
-#
-# 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.
-#
-
-config ARCH_MIPS
-	bool
-
-if ARCH_MIPS
-
-config ARCH_BOOTBLOCK_MIPS
-	bool
-	default n
-	select BOOTBLOCK_CUSTOM
-	select C_ENVIRONMENT_BOOTBLOCK
-
-config ARCH_VERSTAGE_MIPS
-	bool
-	default n
-
-config ARCH_ROMSTAGE_MIPS
-	bool
-	default n
-
-config ARCH_RAMSTAGE_MIPS
-	bool
-	default n
-
-endif # if ARCH_MIPS
diff --git a/src/arch/mips/Makefile.inc b/src/arch/mips/Makefile.inc
deleted file mode 100644
index 7130abaaa0..0000000000
--- a/src/arch/mips/Makefile.inc
+++ /dev/null
@@ -1,93 +0,0 @@
-#
-# This file is part of the coreboot 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; version 2 of
-# the License.
-#
-# 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.
-#
-
-###############################################################################
-# MIPS specific options
-###############################################################################
-
-ifeq ($(CONFIG_ARCH_RAMSTAGE_MIPS),y)
-check-ramstage-overlap-regions += stack
-endif
-
-###############################################################################
-# bootblock
-###############################################################################
-
-ifeq ($(CONFIG_ARCH_BOOTBLOCK_MIPS),y)
-
-bootblock-y += boot.c
-bootblock-y += bootblock.S
-bootblock-y += bootblock_simple.c
-bootblock-y += cache.c
-bootblock-y += mmu.c
-bootblock-y += stages.c
-bootblock-y += ../../lib/memcpy.c
-bootblock-y += ../../lib/memmove.c
-bootblock-y += ../../lib/memset.c
-
-# Much of the assembly code is generated by the compiler, and may contain
-# terms which the preprocessor will happily go on to replace. For example
-# "mips" would be replaced with "1". Clear all the built in definitions to
-# prevent that.
-bootblock-S-ccopts += -undef
-
-$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
-	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
-	$(LD_bootblock) $(LDFLAGS_bootblock) -o $@ -L$(obj) -T $(call src-to-obj,bootblock,src/mainboard/$(MAINBOARDDIR)/memlayout.ld) --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
-
-endif # CONFIG_ARCH_BOOTBLOCK_MIPS
-
-###############################################################################
-# romstage
-###############################################################################
-
-ifeq ($(CONFIG_ARCH_ROMSTAGE_MIPS),y)
-
-romstage-y += boot.c
-romstage-y += cache.c
-romstage-y += mmu.c
-romstage-y += stages.c
-romstage-y += ../../lib/memcpy.c
-romstage-y += ../../lib/memmove.c
-romstage-y += ../../lib/memset.c
-
-$(objcbfs)/romstage.debug: $$(romstage-objs)
-	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
-	$(LD_romstage) $(LDFLAGS_romstage) -o $@ -L$(obj) -T $(call src-to-obj,romstage,src/mainboard/$(MAINBOARDDIR)/memlayout.ld) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
-
-endif # CONFIG_ARCH_ROMSTAGE_MIPS
-
-###############################################################################
-# ramstage
-###############################################################################
-
-ifeq ($(CONFIG_ARCH_RAMSTAGE_MIPS),y)
-
-ramstage-y += ashldi3.c
-ramstage-y += boot.c
-ramstage-y += cache.c
-ramstage-y += mmu.c
-ramstage-y += stages.c
-ramstage-y += tables.c
-ramstage-y += ../../lib/memcpy.c
-ramstage-y += ../../lib/memmove.c
-ramstage-y += ../../lib/memset.c
-
-ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
-
-$(objcbfs)/ramstage.debug: $$(ramstage-objs)
-	@printf "    CC         $(subst $(obj)/,,$(@))\n"
-	$(LD_ramstage) $(LDFLAGS_ramstage) -o $@ -L$(obj) -T $(call src-to-obj,ramstage,src/mainboard/$(MAINBOARDDIR)/memlayout.ld) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
-
-endif # CONFIG_ARCH_RAMSTAGE_MIPS
diff --git a/src/arch/mips/ashldi3.c b/src/arch/mips/ashldi3.c
deleted file mode 100644
index e3282f55ea..0000000000
--- a/src/arch/mips/ashldi3.c
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- *
- * Based on linux arch/mips/lib/ashldi3.c
- */
-
-#ifndef __ORDER_LITTLE_ENDIAN__
-#errror "What endian are you!?"
-#endif
-
-typedef unsigned int word_type;
-long long __ashldi3(long long u, word_type b);
-
-struct DWstruct {
-	int low, high;
-};
-typedef union {
-	struct DWstruct s;
-	long long ll;
-} DWunion;
-
-long long __ashldi3(long long u, word_type b)
-{
-	DWunion uu, w;
-	word_type bm;
-
-	if (b == 0)
-		return u;
-
-	uu.ll = u;
-	bm = 32 - b;
-
-	if (bm <= 0) {
-		w.s.low = 0;
-		w.s.high = (unsigned int) uu.s.low << -bm;
-	} else {
-		const unsigned int carries = (unsigned int) uu.s.low >> bm;
-
-		w.s.low = (unsigned int) uu.s.low << b;
-		w.s.high = ((unsigned int) uu.s.high << b) | carries;
-	}
-
-	return w.ll;
-}
diff --git a/src/arch/mips/boot.c b/src/arch/mips/boot.c
deleted file mode 100644
index a8518cd094..0000000000
--- a/src/arch/mips/boot.c
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#include <arch/stages.h>
-#include <program_loading.h>
-
-void arch_prog_run(struct prog *prog)
-{
-	void *cb_tables = prog_entry_arg(prog);
-	void (*doit)(void *) = prog_entry(prog);
-
-	doit(cb_tables);
-}
diff --git a/src/arch/mips/bootblock.S b/src/arch/mips/bootblock.S
deleted file mode 100644
index 8ae1cfd7fa..0000000000
--- a/src/arch/mips/bootblock.S
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-.set	noreorder	/* Prevent assembler from "optimizing" this code. */
-
-.section ".text._start", "ax", %progbits
-.globl _start
-_start:
-	/* Set the stack pointer */
-	la	$sp, _estack
-
-	/*
-	 * Initialise the stack to a known value, used later to check for
-	 * overflow.
-	 */
-	la	$t0, _stack
-	addi	$t1, $sp, -4
-	li	$t2, 0xdeadbeef
-1:	sw	$t2, 0($t0)
-	bne	$t0, $t1, 1b
-	addi	$t0, $t0, 4
-
-	/* Run main */
-	b	mips_main
-
-	/*
-	 * Should never return from main. Make sure there is no branch in the
-	 * branch delay slot.
-	 */
-2:	nop
-	b	2b
-	nop	/* Make sure there is no branch after this either. */
diff --git a/src/arch/mips/bootblock_simple.c b/src/arch/mips/bootblock_simple.c
deleted file mode 100644
index be0b176b90..0000000000
--- a/src/arch/mips/bootblock_simple.c
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of
- * the License.
- *
- * 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.
- */
-
-#include <arch/bootblock_common.h>
-#include <console/console.h>
-#include <halt.h>
-#include <program_loading.h>
-
-/* called from assembly in bootblock.S */
-void mips_main(void);
-
-void mips_main(void)
-{
-	bootblock_cpu_init();
-
-	/* Mainboard basic init */
-	bootblock_mainboard_init();
-
-#if CONFIG(BOOTBLOCK_CONSOLE)
-	console_init();
-#endif
-
-	bootblock_mmu_init();
-
-	if (init_extra_hardware())
-		printk(BIOS_ERR, "bootblock_simple: failed to init HW.\n");
-	else
-		run_romstage();
-
-	halt();
-}
diff --git a/src/arch/mips/cache.c b/src/arch/mips/cache.c
deleted file mode 100644
index 2b56174898..0000000000
--- a/src/arch/mips/cache.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#include <arch/cache.h>
-#include <arch/cpu.h>
-#include <console/console.h>
-#include <program_loading.h>
-#include <symbols.h>
-
-/* cache_op: issues cache operation for specified address */
-#define cache_op(op, addr)						\
-({									\
-	__asm__ __volatile__(						\
-		".set push\n\t"						\
-		".set noreorder\n\t"					\
-		".set mips32\n\t"					\
-		"cache %0, %1\n\t"					\
-		".set mips0\n\t"					\
-		".set pop\n\t"						\
-		:							\
-		: "i" (op), "R" (*(unsigned char *)(addr)));		\
-})
-
-#define MIPS_CONFIG1_DL_SHIFT	10
-#define MIPS_CONFIG1_DL_MASK	(0x00000007)
-#define MIPS_CONFIG1_IL_SHIFT	19
-#define MIPS_CONFIG1_IL_MASK	(0x00000007)
-#define MIPS_CONFIG2_SL_SHIFT	4
-#define MIPS_CONFIG2_SL_MASK	(0x0000000F)
-
-/*
- * get_cache_line_size:
- * Read config register
- * Isolate instruction cache line size
- * Interpret value as per MIPS manual: 2 << value
- * Return cache line size
- */
-static int get_cache_line_size(uint8_t type)
-{
-	switch (type) {
-	case ICACHE:
-		return 2 << ((read_c0_config1() >> MIPS_CONFIG1_IL_SHIFT) &
-				MIPS_CONFIG1_IL_MASK);
-	case DCACHE:
-		return 2 << ((read_c0_config1() >> MIPS_CONFIG1_DL_SHIFT) &
-				MIPS_CONFIG1_DL_MASK);
-	case L2CACHE:
-		return 2 << ((read_c0_config2() >> MIPS_CONFIG2_SL_SHIFT) &
-				MIPS_CONFIG2_SL_MASK);
-	default:
-		printk(BIOS_ERR, "%s: Error: unsupported cache type.\n",
-				__func__);
-		return 0;
-	}
-	return 0;
-}
-
-void perform_cache_operation(uintptr_t start, size_t size, uint8_t operation)
-{
-	u32 line_size, line_mask;
-	uintptr_t end;
-
-	line_size = get_cache_line_size((operation >> CACHE_TYPE_SHIFT) &
-					CACHE_TYPE_MASK);
-	if (!line_size)
-		return;
-	line_mask = ~(line_size-1);
-	end = (start + (line_size - 1) + size) & line_mask;
-	start &= line_mask;
-	if ((operation & L2CACHE) == L2CACHE)
-		write_c0_l23taglo(0);
-	while (start < end) {
-		switch (operation) {
-		case CACHE_CODE(ICACHE, WB_INVD):
-			cache_op(CACHE_CODE(ICACHE, WB_INVD), start);
-			break;
-		case CACHE_CODE(DCACHE, WB_INVD):
-			cache_op(CACHE_CODE(DCACHE, WB_INVD), start);
-			break;
-		case CACHE_CODE(L2CACHE, WB_INVD):
-			cache_op(CACHE_CODE(L2CACHE, WB_INVD), start);
-			break;
-		default:
-			return;
-		}
-		start += line_size;
-	}
-	asm("sync");
-}
-
-void cache_invalidate_all(uintptr_t start, size_t size)
-{
-	perform_cache_operation(start, size, CACHE_CODE(ICACHE, WB_INVD));
-	perform_cache_operation(start, size, CACHE_CODE(DCACHE, WB_INVD));
-	perform_cache_operation(start, size, CACHE_CODE(L2CACHE, WB_INVD));
-}
-
-void arch_segment_loaded(uintptr_t start, size_t size, int flags)
-{
-	cache_invalidate_all(start, size);
-	if (flags & SEG_FINAL)
-		cache_invalidate_all((uintptr_t)_cbfs_cache,
-				     REGION_SIZE(cbfs_cache));
-}
diff --git a/src/arch/mips/include/arch/bootblock_common.h b/src/arch/mips/include/arch/bootblock_common.h
deleted file mode 100644
index b930b5c4e7..0000000000
--- a/src/arch/mips/include/arch/bootblock_common.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifdef CONFIG_BOOTBLOCK_CPU_INIT
-#include CONFIG_BOOTBLOCK_CPU_INIT
-#endif
-
-#ifdef CONFIG_BOOTBLOCK_MAINBOARD_INIT
-#include CONFIG_BOOTBLOCK_MAINBOARD_INIT
-#else
-static void bootblock_mainboard_init(void)
-{
-}
-#endif
diff --git a/src/arch/mips/include/arch/byteorder.h b/src/arch/mips/include/arch/byteorder.h
deleted file mode 100644
index 7c0ce47176..0000000000
--- a/src/arch/mips/include/arch/byteorder.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_BYTEORDER_H
-#define __MIPS_ARCH_BYTEORDER_H
-
-#ifndef __ORDER_LITTLE_ENDIAN__
-#errror "What endian are you!?"
-#endif
-
-#define __LITTLE_ENDIAN 1234
-
-#endif /* __MIPS_ARCH_BYTEORDER_H */
diff --git a/src/arch/mips/include/arch/cache.h b/src/arch/mips/include/arch/cache.h
deleted file mode 100644
index c610c991cf..0000000000
--- a/src/arch/mips/include/arch/cache.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_CACHE_H
-#define __MIPS_ARCH_CACHE_H
-
-#include <stddef.h>
-#include <stdint.h>
-
-#define CACHE_TYPE_SHIFT	(0)
-#define CACHE_OP_SHIFT		(2)
-#define CACHE_TYPE_MASK		(0x3)
-#define CACHE_OP_MASK		(0x7)
-
-/* Cache type */
-#define ICACHE			0x00
-#define DCACHE			0x01
-#define L2CACHE			0x03
-
-/* Cache operation*/
-#define WB_INVD			0x05
-
-#define CACHE_CODE(type, op)	((((type) & (CACHE_TYPE_MASK)) <<	\
-				(CACHE_TYPE_SHIFT)) |			\
-				(((op) & (CACHE_OP_MASK)) << (CACHE_OP_SHIFT)))
-
-/* Perform cache operation on cache lines for target addresses */
-void perform_cache_operation(uintptr_t start, size_t size, uint8_t operation);
-/* Invalidate all caches: instruction, data, L2 data */
-void cache_invalidate_all(uintptr_t start, size_t size);
-
-/* TODO: Global cache API. Implement properly once we finally have a MIPS board
-   again where we can figure out what exactly these should be doing. */
-static inline void dcache_clean_all(void) {}
-static inline void dcache_invalidate_all(void) {}
-static inline void dcache_clean_invalidate_all(void) {}
-
-#endif /* __MIPS_ARCH_CACHE_H */
diff --git a/src/arch/mips/include/arch/cbconfig.h b/src/arch/mips/include/arch/cbconfig.h
deleted file mode 100644
index 35c1387895..0000000000
--- a/src/arch/mips/include/arch/cbconfig.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef _ARCH_CBCONFIG_H_
-#define _ARCH_CBCONFIG_H_
-
-/*
- * Instead of using Kconfig variables for internal coreboot infrastructure
- * variables that are architecture dependent land those things in this file.
- * If it's not obvious all variables that are used in the common code need
- * to have the same name across all architectures.
- */
-
-#define COREBOOT_TABLE_SIZE 0x2000
-
-#endif
diff --git a/src/arch/mips/include/arch/cpu.h b/src/arch/mips/include/arch/cpu.h
deleted file mode 100644
index 61eb0828cf..0000000000
--- a/src/arch/mips/include/arch/cpu.h
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_CPU_H
-#define __MIPS_ARCH_CPU_H
-
-#include <device/device.h>
-
-#define asmlinkage
-
-struct cpu_driver {
-	struct device_operations *ops;
-	const struct cpu_device_id *id_table;
-};
-
-struct thread;
-
-struct cpu_info {
-	struct device *cpu;
-	unsigned long index;
-};
-
-
-/***************************************************************************
- * The following section was copied from arch/mips/include/asm/mipsregs.h in
- * the 3.14 kernel tree.
- */
-
-/*
- * Macros to access the system control coprocessor
- */
-
-#define __read_32bit_c0_register(source, sel)				\
-({ int __res;								\
-	if (sel == 0)							\
-		__asm__ __volatile__(					\
-			"mfc0\t%0, " #source "\n\t"			\
-			: "=r" (__res));				\
-	else								\
-		__asm__ __volatile__(					\
-			".set\tmips32\n\t"				\
-			"mfc0\t%0, " #source ", " #sel "\n\t"		\
-			".set\tmips0\n\t"				\
-			: "=r" (__res));				\
-	__res;								\
-})
-
-#define __write_32bit_c0_register(register, sel, value)			\
-do {									\
-	if (sel == 0)							\
-		__asm__ __volatile__(					\
-			"mtc0\t%z0, " #register "\n\t"			\
-			: : "Jr" ((unsigned int)(value)));		\
-	else								\
-		__asm__ __volatile__(					\
-			".set\tmips32\n\t"				\
-			"mtc0\t%z0, " #register ", " #sel "\n\t"	\
-			".set\tmips0"					\
-			: : "Jr" ((unsigned int)(value)));		\
-} while (0)
-
-/* Shortcuts to access various internal registers, keep adding as needed. */
-#define read_c0_index()		__read_32bit_c0_register($0, 0)
-#define write_c0_index(val)	__write_32bit_c0_register($0, 0, (val))
-
-#define read_c0_entrylo0()	__read_32bit_c0_register($2, 0)
-#define write_c0_entrylo0(val)	__write_32bit_c0_register($2, 0, (val))
-
-#define read_c0_entrylo1()	__read_32bit_c0_register($3, 0)
-#define write_c0_entrylo1(val)	__write_32bit_c0_register($3, 0, (val))
-
-#define read_c0_pagemask()	__read_32bit_c0_register($5, 0)
-#define write_c0_pagemask(val)	__write_32bit_c0_register($5, 0, (val))
-
-#define read_c0_wired()		__read_32bit_c0_register($6, 0)
-#define write_c0_wired(val)	__write_32bit_c0_register($6, 0, (val))
-
-#define read_c0_count()		__read_32bit_c0_register($9, 0)
-#define write_c0_count(val)	__write_32bit_c0_register($9, 0, (val))
-
-#define read_c0_entryhi()	__read_32bit_c0_register($10, 0)
-#define write_c0_entryhi(val)	__write_32bit_c0_register($10, 0, (val))
-
-#define read_c0_cause()		__read_32bit_c0_register($13, 0)
-#define write_c0_cause(val)	__write_32bit_c0_register($13, 0, (val))
-
-#define read_c0_config1()	__read_32bit_c0_register($16, 1)
-#define write_c0_config1(val)	__write_32bit_c0_register($16, 1, (val))
-
-#define read_c0_config2()	__read_32bit_c0_register($16, 2)
-#define write_c0_config2(val)	__write_32bit_c0_register($16, 2, (val))
-
-#define read_c0_l23taglo()	__read_32bit_c0_register($28, 4)
-#define write_c0_l23taglo(val)	__write_32bit_c0_register($28, 4, (val))
-
-
-#define C0_ENTRYLO_PFN_SHIFT 6
-
-#define C0_ENTRYLO_COHERENCY_MASK	0x00000038
-#define C0_ENTRYLO_COHERENCY_SHIFT	3
-/* Cacheable, write-back, non-coherent */
-#define C0_ENTRYLO_COHERENCY_WB		(0x3 << C0_ENTRYLO_COHERENCY_SHIFT)
-/* Uncached, non-coherent */
-#define C0_ENTRYLO_COHERENCY_UC		(0x2 << C0_ENTRYLO_COHERENCY_SHIFT)
-
-/* Writeable */
-#define C0_ENTRYLO_D			(0x1 << 2)
-/* Valid */
-#define C0_ENTRYLO_V			(0x1 << 1)
-/* Global */
-#define C0_ENTRYLO_G			(0x1 << 0)
-
-#define C0_PAGEMASK_SHIFT 13
-#define C0_PAGEMASK_MASK 0xffff
-
-#define C0_WIRED_MASK 0x3f
-
-#define C0_CAUSE_DC (1 << 27)
-
-#define C0_CONFIG1_MMUSIZE_SHIFT 25
-#define C0_CONFIG1_MMUSIZE_MASK 0x3f
-
-/* Hazard handling */
-static inline void __nop(void)
-{
-	__asm__ __volatile__("nop");
-}
-
-static inline void __ssnop(void)
-{
-	__asm__ __volatile__("sll\t$0, $0, 1");
-}
-
-#define mtc0_tlbw_hazard()						\
-do {									\
-	__nop();							\
-	__nop();							\
-} while (0)
-
-#define tlbw_use_hazard()						\
-do {									\
-	__nop();							\
-	__nop();							\
-	__nop();							\
-} while (0)
-
-#define tlb_probe_hazard()						\
-do {									\
-	__nop();							\
-	__nop();							\
-	__nop();							\
-} while (0)
-
-#define back_to_back_c0_hazard()					\
-do {									\
-	__ssnop();							\
-	__ssnop();							\
-	__ssnop();							\
-} while (0)
-/**************************************************************************/
-
-#endif /* __MIPS_ARCH_CPU_H */
diff --git a/src/arch/mips/include/arch/early_variables.h b/src/arch/mips/include/arch/early_variables.h
deleted file mode 100644
index 6ad82606c4..0000000000
--- a/src/arch/mips/include/arch/early_variables.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_EARLY_VARIABLES_H
-#define __MIPS_ARCH_EARLY_VARIABLES_H
-
-#define CAR_GLOBAL
-#define CAR_MIGRATE(migrate_fn_)
-
-static inline void *car_get_var_ptr(void *var) { return var; }
-#define car_get_var(var) (var)
-#define car_set_var(var, val) { (var) = (val); }
-
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-#endif /* __MIPS_ARCH_EARLY_VARIABLES_H */
diff --git a/src/arch/mips/include/arch/exception.h b/src/arch/mips/include/arch/exception.h
deleted file mode 100644
index a0ab9ecebd..0000000000
--- a/src/arch/mips/include/arch/exception.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_EXCEPTION_H
-#define __MIPS_ARCH_EXCEPTION_H
-
-static inline void exception_init(void) {}
-
-#endif /* __MIPS_ARCH_EXCEPTION_H */
diff --git a/src/arch/mips/include/arch/header.ld b/src/arch/mips/include/arch/header.ld
deleted file mode 100644
index 7f832eb51c..0000000000
--- a/src/arch/mips/include/arch/header.ld
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-/* We use ELF as output format. So that we can debug the code in some form. */
-OUTPUT_ARCH(mips)
-
-PHDRS
-{
-	to_load PT_LOAD;
-}
-
-#if ENV_BOOTBLOCK
-ENTRY(_start)
-#else
-ENTRY(stage_entry)
-#endif
diff --git a/src/arch/mips/include/arch/hlt.h b/src/arch/mips/include/arch/hlt.h
deleted file mode 100644
index 5feafe2b85..0000000000
--- a/src/arch/mips/include/arch/hlt.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_HLT_H
-#define __MIPS_ARCH_HLT_H
-
-static inline __always_inline void hlt(void)
-{
-	for (;;)
-		;
-}
-
-#endif /* __MIPS_ARCH_HLT_H */
diff --git a/src/arch/mips/include/arch/memlayout.h b/src/arch/mips/include/arch/memlayout.h
deleted file mode 100644
index bf862a30ea..0000000000
--- a/src/arch/mips/include/arch/memlayout.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-/* This file contains macro definitions for memlayout.ld linker scripts. */
-
-#ifndef __ARCH_MEMLAYOUT_H
-#define __ARCH_MEMLAYOUT_H
-
-/* MIPS stacks need 8-byte alignment and stay in one place through ramstage. */
-/* TODO: Double-check that that's the correct alignment for our ABI. */
-#define STACK(addr, size) \
-	REGION(stack, addr, size, 8) \
-	_ = ASSERT(size >= 2K, "stack should be >= 2K, see toolchain.inc");
-
-#define DMA_COHERENT(addr, size) REGION(dma_coherent, addr, size, 4K)
-
-#define SOC_REGISTERS(addr, size) REGION(soc_registers, addr, size, 4)
-
-#endif /* __ARCH_MEMLAYOUT_H */
diff --git a/src/arch/mips/include/arch/mmio.h b/src/arch/mips/include/arch/mmio.h
deleted file mode 100644
index 2564e3b60d..0000000000
--- a/src/arch/mips/include/arch/mmio.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __ARCH_MMIO_H__
-#define __ARCH_MMIO_H__
-
-#include <types.h>
-#include <arch/cache.h>
-#include <endian.h>
-
-static inline uint8_t read8(const volatile void *addr)
-{
-	asm("sync");
-	return *(volatile uint8_t *)addr;
-}
-
-static inline uint16_t read16(const volatile void *addr)
-{
-	asm("sync");
-	return *(volatile uint16_t *)addr;
-}
-
-static inline uint32_t read32(const volatile void *addr)
-{
-	asm("sync");
-	return *(volatile uint32_t *)addr;
-}
-
-static inline void write8(volatile void *addr, uint8_t val)
-{
-	asm("sync");
-	*(volatile uint8_t *)addr = val;
-	asm("sync");
-}
-
-static inline void write16(volatile void *addr, uint16_t val)
-{
-	asm("sync");
-	*(volatile uint16_t *)addr = val;
-	asm("sync");
-}
-
-static inline void write32(volatile void *addr, uint32_t val)
-{
-	asm("sync");
-	*(volatile uint32_t *)addr = val;
-	asm("sync");
-}
-
-/* Fixing soc/imgtech/pistachio seemed painful at the time. */
-#define read32_x(addr)		read32((void *)(addr))
-#define write32_x(addr, val)	write32((void *)(addr), (val))
-
-#endif	/* __MIPS_ARCH_IO_H */
diff --git a/src/arch/mips/include/arch/mmu.h b/src/arch/mips/include/arch/mmu.h
deleted file mode 100644
index f7377bb88c..0000000000
--- a/src/arch/mips/include/arch/mmu.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_MMU_H
-#define __MIPS_ARCH_MMU_H
-
-#include <arch/cpu.h>
-#include <stddef.h>
-#include <stdint.h>
-
-static inline void tlb_write_indexed(void)
-{
-	__asm__ __volatile__(
-		".set noreorder\n\t"
-		"tlbwi\n\t"
-		".set reorder");
-}
-
-static inline uint32_t get_max_pagesize(void)
-{
-	uint32_t max_pgsize;
-
-	write_c0_pagemask(C0_PAGEMASK_MASK << C0_PAGEMASK_SHIFT);
-	back_to_back_c0_hazard();
-	max_pgsize = (((read_c0_pagemask() >> C0_PAGEMASK_SHIFT) &
-		       C0_PAGEMASK_MASK) + 1) * 4 * KiB;
-
-	return max_pgsize;
-}
-
-static inline uint32_t get_tlb_size(void)
-{
-	uint32_t tlbsize;
-
-	tlbsize = ((read_c0_config1() >> C0_CONFIG1_MMUSIZE_SHIFT) &
-		   C0_CONFIG1_MMUSIZE_MASK) + 1;
-
-	return tlbsize;
-}
-
-int identity_map(uint32_t start, size_t len, uint32_t coherency);
-
-#endif /* __MIPS_ARCH_MMU_H */
diff --git a/src/arch/mips/include/arch/pci_ops.h b/src/arch/mips/include/arch/pci_ops.h
deleted file mode 100644
index da397cf3b8..0000000000
--- a/src/arch/mips/include/arch/pci_ops.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef ARCH_MIPS_PCI_OPS_H
-#define ARCH_MIPS_PCI_OPS_H
-
-#include <device/pci_mmio_cfg.h>
-
-#endif
diff --git a/src/arch/mips/include/arch/stages.h b/src/arch/mips/include/arch/stages.h
deleted file mode 100644
index 3da02da1ca..0000000000
--- a/src/arch/mips/include/arch/stages.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_STAGES_H
-#define __MIPS_ARCH_STAGES_H
-
-#include <stdint.h>
-#include <main_decl.h>
-
-void stage_entry(uintptr_t stage_arg);
-
-#endif /* __MIPS_ARCH_STAGES_H */
diff --git a/src/arch/mips/include/arch/types.h b/src/arch/mips/include/arch/types.h
deleted file mode 100644
index fa14b6a684..0000000000
--- a/src/arch/mips/include/arch/types.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#ifndef __MIPS_ARCH_TYPES_H
-#define __MIPS_ARCH_TYPES_H
-
-typedef unsigned short umode_t;
-
-/*
- * __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
- * header files exported to user space
- */
-
-typedef __signed__ char __s8;
-typedef unsigned char __u8;
-
-typedef __signed__ short __s16;
-typedef unsigned short __u16;
-
-typedef __signed__ int __s32;
-typedef unsigned int __u32;
-
-#if defined(__GNUC__)
-__extension__ typedef __signed__ long long __s64;
-__extension__ typedef unsigned long long __u64;
-#endif
-
-typedef signed char s8;
-typedef unsigned char u8;
-
-typedef signed short s16;
-typedef unsigned short u16;
-
-typedef signed int s32;
-typedef unsigned int u32;
-
-typedef signed long long s64;
-typedef unsigned long long u64;
-
-#define BITS_PER_LONG 32
-
-/* Dma addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
-
-typedef unsigned long phys_addr_t;
-typedef unsigned long phys_size_t;
-
-#endif /* __MIPS_ARCH_TYPES_H */
diff --git a/src/arch/mips/mmu.c b/src/arch/mips/mmu.c
deleted file mode 100644
index 5ef276d273..0000000000
--- a/src/arch/mips/mmu.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of
- * the License.
- *
- * 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.
- */
-
-#include <arch/mmu.h>
-#include <console/console.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-
-#define MIN_PAGE_SIZE (4 * KiB)
-
-static int add_wired_tlb_entry(uint32_t entrylo0, uint32_t entrylo1,
-			       uint32_t entryhi, uint32_t pgsize)
-{
-	uint32_t tlbindex;
-
-	tlbindex = read_c0_wired();
-	if (tlbindex >= get_tlb_size() || tlbindex >= C0_WIRED_MASK) {
-		printk(BIOS_ERR, "Ran out of TLB entries\n");
-		return -1;
-	}
-	write_c0_wired(tlbindex + 1);
-	write_c0_index(tlbindex);
-	write_c0_pagemask(((pgsize / MIN_PAGE_SIZE) - 1) << C0_PAGEMASK_SHIFT);
-	write_c0_entryhi(entryhi);
-	write_c0_entrylo0(entrylo0);
-	write_c0_entrylo1(entrylo1);
-	mtc0_tlbw_hazard();
-	tlb_write_indexed();
-	tlbw_use_hazard();
-
-	return 0;
-}
-
-static uint32_t pick_pagesize(uint32_t start, uint32_t len)
-{
-	uint32_t pgsize, max_pgsize;
-
-	max_pgsize = get_max_pagesize();
-	for (pgsize = max_pgsize;
-	     pgsize >= MIN_PAGE_SIZE;
-	     pgsize = pgsize / 4) {
-		/*
-		 * Each TLB entry maps a pair of virtual pages.  To avoid
-		 * aliasing, pick the largest page size that is at most
-		 * half the size of the region we're trying to map.
-		 */
-		if (IS_ALIGNED(start, 2 * pgsize) && (2 * pgsize <= len))
-			break;
-	}
-
-	return pgsize;
-}
-
-/*
- * Identity map the memory from [start,start+len] in the TLB using the
- * largest suitable page size so as to conserve TLB entries.
- */
-int identity_map(uint32_t start, size_t len, uint32_t coherency)
-{
-	uint32_t pgsize, pfn, entryhi, entrylo0, entrylo1;
-
-	coherency &= C0_ENTRYLO_COHERENCY_MASK;
-	while (len > 0) {
-		pgsize = pick_pagesize(start, len);
-		entryhi = start;
-		pfn = start >> 12;
-		entrylo0 = (pfn << C0_ENTRYLO_PFN_SHIFT) | coherency |
-			C0_ENTRYLO_D | C0_ENTRYLO_V | C0_ENTRYLO_G;
-		start += pgsize;
-		len -= MIN(len, pgsize);
-		if (len >= pgsize) {
-			pfn = start >> 12;
-			entrylo1 = (pfn << C0_ENTRYLO_PFN_SHIFT) |
-				coherency | C0_ENTRYLO_D | C0_ENTRYLO_V |
-				C0_ENTRYLO_G;
-			start += pgsize;
-			len -= MIN(len, pgsize);
-		} else {
-			entrylo1 = 0;
-		}
-		if (add_wired_tlb_entry(entrylo0, entrylo1, entryhi, pgsize))
-			return -1;
-	}
-
-	return 0;
-}
diff --git a/src/arch/mips/stages.c b/src/arch/mips/stages.c
deleted file mode 100644
index bf31153d98..0000000000
--- a/src/arch/mips/stages.c
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#include <cbmem.h>
-#include <arch/stages.h>
-#include <arch/cache.h>
-
-void stage_entry(uintptr_t stage_arg)
-{
-	if (!ENV_ROMSTAGE_OR_BEFORE)
-		_cbmem_top_ptr = stage_arg;
-	main();
-}
diff --git a/src/arch/mips/tables.c b/src/arch/mips/tables.c
deleted file mode 100644
index e9de4bfd71..0000000000
--- a/src/arch/mips/tables.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * This file is part of the coreboot 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; version 2 of the License.
- *
- * 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.
- */
-
-#include <bootmem.h>
-#include <boot/tables.h>
-#include <boot/coreboot_tables.h>
-
-void arch_write_tables(uintptr_t coreboot_table)
-{
-}
-
-void bootmem_arch_add_ranges(void)
-{
-}
-
-void lb_arch_add_records(struct lb_header *header)
-{
-}