[coreboot-gerrit] New patch to review for coreboot: f7278f3 arch/mips: Add base MIPS architecture support
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Thu Mar 19 15:52:12 CET 2015
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8760
-gerrit
commit f7278f3841cc1a33b5563bb7f57bdb2c3dc7f37d
Author: Paul Burton <paul.burton at imgtec.com>
Date: Sat Jun 14 00:00:10 2014 +0100
arch/mips: Add base MIPS architecture support
Add the build infrastructure and basic architectural support required
to build for targets using the MIPS architecture. This is sufficient
to run on a simulator, but will require the addition of some cache
maintenance and timer setup in order to run on real hardware.
BUG=chrome-os-partner:31438, chromium:409082
TEST=none yet
Change-Id: I027902d8408e419b626d0aab7768bc564bd49047
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
Original-Commit-Id: fcc0d934d7223922c878b1f87021cb5c2d7e6f21
Original-Change-Id: If4f99554463bd3760fc142477440326fd16c67cc
Original-Signed-off-by: Paul Burton <paul.burton at imgtec.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/207972
Original-Reviewed-by: Aaron Durbin <adurbin at chromium.org>
---
Makefile.inc | 3 +-
src/Kconfig | 5 +
src/arch/mips/Kconfig | 37 +++++++
src/arch/mips/Makefile.inc | 148 +++++++++++++++++++++++++++
src/arch/mips/boot.c | 27 +++++
src/arch/mips/bootblock.inc | 44 ++++++++
src/arch/mips/bootblock.ld | 57 +++++++++++
src/arch/mips/bootblock_simple.c | 45 ++++++++
src/arch/mips/early_console.c | 55 ++++++++++
src/arch/mips/include/arch/byteorder.h | 48 +++++++++
src/arch/mips/include/arch/cache.h | 23 +++++
src/arch/mips/include/arch/cpu.h | 43 ++++++++
src/arch/mips/include/arch/early_variables.h | 30 ++++++
src/arch/mips/include/arch/exception.h | 25 +++++
src/arch/mips/include/arch/hlt.h | 29 ++++++
src/arch/mips/include/arch/io.h | 125 ++++++++++++++++++++++
src/arch/mips/include/arch/pci_ops.h | 30 ++++++
src/arch/mips/include/arch/stages.h | 29 ++++++
src/arch/mips/include/arch/types.h | 67 ++++++++++++
src/arch/mips/include/bootblock_common.h | 30 ++++++
src/arch/mips/include/stdint.h | 99 ++++++++++++++++++
src/arch/mips/ramstage.ld | 121 ++++++++++++++++++++++
src/arch/mips/romstage.ld | 72 +++++++++++++
src/arch/mips/stages.c | 35 +++++++
src/arch/mips/tables.c | 67 ++++++++++++
src/arch/mips/timer.c | 31 ++++++
src/cpu/Kconfig | 1 +
src/cpu/mips/Kconfig | 36 +++++++
toolchain.inc | 2 +-
29 files changed, 1362 insertions(+), 2 deletions(-)
diff --git a/Makefile.inc b/Makefile.inc
index cc696e4..41c5778 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -70,7 +70,8 @@ PHONY+= clean-abuild coreboot lint lint-stable build-dirs
subdirs-y := src/lib src/console src/device src/ec src/southbridge src/soc
subdirs-y += src/northbridge src/superio src/drivers src/cpu src/vendorcode
subdirs-y += util/cbfstool util/sconfig util/nvramtool
-subdirs-y += src/arch/arm src/arch/arm64 src/arch/x86 src/arch/riscv
+subdirs-y += src/arch/arm src/arch/arm64 src/arch/mips src/arch/riscv
+subdirs-y += src/arch/x86
subdirs-y += src/mainboard/$(MAINBOARDDIR)
subdirs-y += site-local
diff --git a/src/Kconfig b/src/Kconfig
index 6cabc70..d0db5e7 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -277,10 +277,15 @@ config ARCH_RISCV
default n
select ANY_TOOLCHAIN
+config ARCH_MIPS
+ bool
+ default n
+
source src/arch/x86/Kconfig
source src/arch/arm/Kconfig
source src/arch/arm64/Kconfig
source src/arch/riscv/Kconfig
+source src/arch/mips/Kconfig
source src/vendorcode/Kconfig
diff --git a/src/arch/mips/Kconfig b/src/arch/mips/Kconfig
new file mode 100644
index 0000000..3d8e2c6
--- /dev/null
+++ b/src/arch/mips/Kconfig
@@ -0,0 +1,37 @@
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2014 Imagination Technologies
+#
+# 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.
+#
+# 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., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301 USA
+#
+
+menu "Architecture (mips)"
+
+config ARCH_BOOTBLOCK_MIPS
+ bool
+ default n
+ select ARCH_MIPS
+
+config ARCH_ROMSTAGE_MIPS
+ bool
+ default n
+
+config ARCH_RAMSTAGE_MIPS
+ bool
+ default n
+
+endmenu
diff --git a/src/arch/mips/Makefile.inc b/src/arch/mips/Makefile.inc
new file mode 100644
index 0000000..956f2d5
--- /dev/null
+++ b/src/arch/mips/Makefile.inc
@@ -0,0 +1,148 @@
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2014 Imagination Technologies
+#
+# 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.
+#
+# 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., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301 USA
+#
+
+###############################################################################
+# MIPS specific options
+###############################################################################
+
+ifeq ($(CONFIG_ARCH_ROMSTAGE_MIPS),y)
+CBFSTOOL_PRE1_OPTS = -m mips -b $(CONFIG_BOOTBLOCK_ROM_OFFSET) -H $(CONFIG_CBFS_HEADER_ROM_OFFSET) -o $(CONFIG_CBFS_ROM_OFFSET)
+CBFSTOOL_PRE_OPTS = -b 0
+endif
+
+###############################################################################
+# bootblock
+###############################################################################
+
+ifeq ($(CONFIG_ARCH_BOOTBLOCK_MIPS),y)
+
+bootblock-y += boot.c
+bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += early_console.c
+bootblock-y += stages.c
+bootblock-y += timer.c
+bootblock-y += ../../lib/memcpy.c
+bootblock-y += ../../lib/memmove.c
+bootblock-y += ../../lib/memset.c
+
+bootblock_lds = $(src)/arch/mips/bootblock.ld
+
+bootblock_inc += $(src)/arch/mips/bootblock.inc
+bootblock_inc += $(objgenerated)/bootblock.inc
+
+# Much of the assembly code is generated by the compiler, and may contain
+# terms which the preprocessor will happily go on to replace. For example
+# "mips" would be replaced with "1". Clear all the built in definitions to
+# prevent that.
+bootblock-S-ccopts += -undef
+
+$(objgenerated)/bootblock.ld: $$(bootblock_lds) $(obj)/ldoptions
+ @printf " GEN $(subst $(obj)/,,$(@))\n"
+ printf '$(foreach ldscript,ldoptions $(bootblock_lds),INCLUDE "$(ldscript)"\n)' > $@
+
+$(objgenerated)/bootblock_inc.S: $$(bootblock_inc)
+ @printf " GEN $(subst $(obj)/,,$(@))\n"
+ printf '$(foreach crt0,$(bootblock_inc),#include "$(crt0)"\n)' > $@
+
+$(objgenerated)/bootblock.o: $(objgenerated)/bootblock.s
+ @printf " CC $(subst $(obj)/,,$(@))\n"
+ $(CC_bootblock) $(bootblock-S-ccopts) -Wa,-acdlns -c -o $@ $< > $(basename $@).disasm
+
+$(objgenerated)/bootblock.s: $(objgenerated)/bootblock_inc.S $(obj)/config.h $(obj)/build.h
+ @printf " CC $(subst $(obj)/,,$(@))\n"
+ $(CC_bootblock) $(bootblock-S-ccopts) -MMD -x assembler-with-cpp -E \
+ -I$(src)/include -I$(src)/arch/mips/include -I$(obj) \
+ -include $(obj)/build.h -include $(obj)/config.h -I. \
+ -I$(src) $< -o $@
+
+$(objgenerated)/bootblock.inc: $(src)/arch/mips/$(subst ",,$(CONFIG_BOOTBLOCK_SOURCE)) $(bootblock_custom) $(obj)/config.h
+ @printf " CC $(subst $(obj)/,,$(@))\n"
+ $(CC_bootblock) $(bootblock-c-ccopts) $(CFLAGS_bootblock) -MM \
+ -MT$(objgenerated)/bootblock.inc \
+ $< > $(objgenerated)/bootblock.inc.d
+ $(CC_bootblock) $(bootblock-c-ccopts) -c -S $(CFLAGS_bootblock) -I. $< -o $@
+
+$(objcbfs)/bootblock.debug: $(objgenerated)/bootblock.o $(objgenerated)/bootblock.ld $$(bootblock-objs) $(obj)/config.h
+ @printf " LINK $(subst $(obj)/,,$(@))\n"
+ $(CC_bootblock) $(CFLAGS_bootblock) -nostdlib -Wl,--gc-sections -nostartfiles -include $(obj)/config.h -static -o $@ -L$(obj) -T $(objgenerated)/bootblock.ld -Wl,--start-group $(objgenerated)/bootblock.o $(bootblock-objs) -Wl,--end-group
+
+endif # CONFIG_ARCH_BOOTBLOCK_MIPS
+
+###############################################################################
+# romstage
+###############################################################################
+
+ifeq ($(CONFIG_ARCH_ROMSTAGE_MIPS),y)
+
+romstage-y += boot.c
+romstage-$(CONFIG_EARLY_CONSOLE) += early_console.c
+romstage-y += stages.c
+romstage-y += timer.c
+romstage-y += ../../lib/memcpy.c
+romstage-y += ../../lib/memmove.c
+romstage-y += ../../lib/memset.c
+
+romstage-lds = $(src)/arch/mips/romstage.ld
+
+$(objcbfs)/romstage.debug: $$(romstage-objs) $(objgenerated)/romstage.ld
+ @printf " LINK $(subst $(obj)/,,$(@))\n"
+ $(CC_romstage) -nostdlib -Wl,--gc-sections -nostartfiles -static -o $@ -L$(obj) -T $(objgenerated)/romstage.ld -Wl,--start-group $(romstage-objs) -Wl,--end-group
+
+$(objgenerated)/romstage.ld: $$(romstage-lds) $(obj)/ldoptions
+ @printf " GEN $(subst $(obj)/,,$(@))\n"
+ rm -f $@
+ printf '$(foreach ldscript,ldoptions $(romstage-lds),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' >> $@.tmp
+ mv $@.tmp $@
+
+endif # CONFIG_ARCH_ROMSTAGE_MIPS
+
+###############################################################################
+# ramstage
+###############################################################################
+
+ifeq ($(CONFIG_ARCH_RAMSTAGE_MIPS),y)
+
+ramstage-y += ashldi3.c
+ramstage-y += boot.c
+ramstage-y += stages.c
+ramstage-y += tables.c
+ramstage-y += timer.c
+ramstage-y += ../../lib/memcpy.c
+ramstage-y += ../../lib/memmove.c
+ramstage-y += ../../lib/memset.c
+ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
+
+ramstage-lds = $(src)/arch/mips/ramstage.ld
+
+$(objgenerated)/ramstage.ld: $$(ramstage-lds) $(obj)/ldoptions
+ @printf " GEN $(subst $(obj)/,,$(@))\n"
+ rm -f $@
+ printf '$(foreach ldscript,ldoptions $(ramstage-lds),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' >> $@.tmp
+ mv $@.tmp $@
+
+$(objcbfs)/ramstage.debug: $(objgenerated)/ramstage.o $(objgenerated)/ramstage.ld
+ @printf " CC $(subst $(obj)/,,$(@))\n"
+ $(CC_ramstage) -nostdlib -Wl,--gc-sections -nostartfiles -static -o $@ -L$(obj) -T $(objgenerated)/ramstage.ld $<
+
+$(objgenerated)/ramstage.o: $$(ramstage-objs)
+ @printf " CC $(subst $(obj)/,,$(@))\n"
+ $(CC_ramstage) $(CFLAGS_ramstage) -nostdlib -r -o $@ -Wl,--start-group $(ramstage-objs) -Wl,--end-group
+
+endif # CONFIG_ARCH_RAMSTAGE_MIPS
diff --git a/src/arch/mips/boot.c b/src/arch/mips/boot.c
new file mode 100644
index 0000000..d322e99
--- /dev/null
+++ b/src/arch/mips/boot.c
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <arch/stages.h>
+
+void jmp_to_elf_entry(void *entry, unsigned long buffer, unsigned long size)
+{
+ printk(BIOS_SPEW, "entry = %p\n", entry);
+ stage_exit(entry);
+}
diff --git a/src/arch/mips/bootblock.inc b/src/arch/mips/bootblock.inc
new file mode 100644
index 0000000..76a10cf
--- /dev/null
+++ b/src/arch/mips/bootblock.inc
@@ -0,0 +1,44 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+.set noreorder /* Prevent assembler from "optimizing" this code. */
+
+.section ".start", "ax", %progbits
+.globl _start
+_start:
+ /* Set the stack pointer */
+ li $sp, CONFIG_STACK_TOP
+
+ /*
+ * Initialise the stack to a known value, used later to check for
+ * overflow.
+ */
+ li $t0, CONFIG_STACK_BOTTOM
+ addi $t1, $sp, -4
+ li $t2, 0xdeadbeef
+1: sw $t2, 0($t0)
+ bne $t0, $t1, 1b
+ addi $t0, $t0, 4
+
+ /* Run main */
+ b main
+
+ /* Should never return from main. */
+2:
+ b 2b
diff --git a/src/arch/mips/bootblock.ld b/src/arch/mips/bootblock.ld
new file mode 100644
index 0000000..3721f85
--- /dev/null
+++ b/src/arch/mips/bootblock.ld
@@ -0,0 +1,57 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Advanced Micro Devices, Inc.
+ * Copyright (C) 2008-2010 coresystems GmbH
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+OUTPUT_ARCH(mips)
+
+ENTRY(_start)
+
+PHDRS
+{
+ to_load PT_LOAD;
+}
+
+preram_cbmem_console = CONFIG_CBMEM_CONSOLE_PRERAM_BASE;
+
+SECTIONS
+{
+ . = CONFIG_BOOTBLOCK_BASE;
+
+ /* This section might be better named .setup */
+ .rom : {
+ _rom = .;
+ *(.start);
+ *(.id);
+ *(.text);
+ *(.text.*);
+ *(.rom.text);
+ *(.rom.data);
+ *(.rom.data.*);
+ *(.rodata.*);
+ _erom = .;
+ } : to_load = 0xff
+
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ *(.comment.*)
+ *(.note.*)
+ }
+}
diff --git a/src/arch/mips/bootblock_simple.c b/src/arch/mips/bootblock_simple.c
new file mode 100644
index 0000000..49ea24d
--- /dev/null
+++ b/src/arch/mips/bootblock_simple.c
@@ -0,0 +1,45 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <arch/hlt.h>
+#include <arch/stages.h>
+#include <bootblock_common.h>
+#include <cbfs.h>
+#include <console/console.h>
+
+void main(void)
+{
+ const char *stage_name = "fallback/romstage";
+ void *entry;
+
+ bootblock_cpu_init();
+ bootblock_mainboard_init();
+
+#if CONFIG_BOOTBLOCK_CONSOLE
+ console_init();
+#endif
+
+ entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, stage_name);
+ if (entry != (void *)-1)
+ stage_exit(entry);
+
+ hlt();
+}
diff --git a/src/arch/mips/early_console.c b/src/arch/mips/early_console.c
new file mode 100644
index 0000000..8f3d907
--- /dev/null
+++ b/src/arch/mips/early_console.c
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <console/vtxprintf.h>
+
+void console_tx_byte(unsigned char byte)
+{
+ if (byte == '\n')
+ console_tx_byte('\r');
+
+#if CONFIG_CONSOLE_SERIAL_UART
+ uart_tx_byte(byte);
+#endif
+}
+
+void console_tx_flush(void)
+{
+#if CONFIG_CONSOLE_SERIAL_UART
+ uart_tx_flush();
+#endif
+}
+
+int do_printk(int msg_level, const char *fmt, ...)
+{
+ va_list args;
+ int i;
+
+ if (msg_level > console_loglevel)
+ return 0;
+
+ va_start(args, fmt);
+ i = vtxprintf(console_tx_byte, fmt, args);
+ va_end(args);
+
+ console_tx_flush();
+
+ return i;
+}
diff --git a/src/arch/mips/include/arch/byteorder.h b/src/arch/mips/include/arch/byteorder.h
new file mode 100644
index 0000000..90c375e
--- /dev/null
+++ b/src/arch/mips/include/arch/byteorder.h
@@ -0,0 +1,48 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_ARCH_BYTEORDER_H
+#define __MIPS_ARCH_BYTEORDER_H
+
+#include <stdint.h>
+#include <swab.h>
+
+#ifndef __ORDER_LITTLE_ENDIAN__
+#errror "What endian are you!?"
+#endif
+
+#define cpu_to_le64(x) ((uint64_t)(x))
+#define le64_to_cpu(x) ((uint64_t)(x))
+#define cpu_to_le32(x) ((uint32_t)(x))
+#define le32_to_cpu(x) ((uint32_t)(x))
+#define cpu_to_le16(x) ((uint16_t)(x))
+#define le16_to_cpu(x) ((uint16_t)(x))
+#define cpu_to_be64(x) swab64(x)
+#define be64_to_cpu(x) swab64(x)
+#define cpu_to_be32(x) swab32((x))
+#define be32_to_cpu(x) swab32((x))
+#define cpu_to_be16(x) swab16((x))
+#define be16_to_cpu(x) swab16((x))
+
+#define ntohll(x) be64_to_cpu(x)
+#define htonll(x) cpu_to_be64(x)
+#define ntohl(x) be32_to_cpu(x)
+#define htonl(x) cpu_to_be32(x)
+
+#endif /* __MIPS_ARCH_BYTEORDER_H */
diff --git a/src/arch/mips/include/arch/cache.h b/src/arch/mips/include/arch/cache.h
new file mode 100644
index 0000000..a985741
--- /dev/null
+++ b/src/arch/mips/include/arch/cache.h
@@ -0,0 +1,23 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_ARCH_CACHE_H
+#define __MIPS_ARCH_CACHE_H
+
+#endif /* __MIPS_ARCH_CACHE_H */
diff --git a/src/arch/mips/include/arch/cpu.h b/src/arch/mips/include/arch/cpu.h
new file mode 100644
index 0000000..0ac9f31
--- /dev/null
+++ b/src/arch/mips/include/arch/cpu.h
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_ARCH_CPU_H
+#define __MIPS_ARCH_CPU_H
+
+#define asmlinkage
+
+#ifndef __PRE_RAM__
+
+#include <device/device.h>
+
+struct cpu_driver {
+ struct device_operations *ops;
+ struct cpu_device_id *id_table;
+};
+
+struct thread;
+
+struct cpu_info {
+ device_t cpu;
+ unsigned long index;
+};
+
+#endif /* !__PRE_RAM__ */
+
+#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
new file mode 100644
index 0000000..a81a6b4
--- /dev/null
+++ b/src/arch/mips/include/arch/early_variables.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_ARCH_EARLY_VARIABLES_H
+#define __MIPS_ARCH_EARLY_VARIABLES_H
+
+#define CAR_GLOBAL
+#define CAR_MIGRATE(migrate_fn_)
+
+static inline void car_migrate_variables(void) {}
+#define car_get_var(var) (var)
+#define car_set_var(var, val) { (var) = (val); }
+
+#endif /* __MIPS_ARCH_EARLY_VARIABLES_H */
diff --git a/src/arch/mips/include/arch/exception.h b/src/arch/mips/include/arch/exception.h
new file mode 100644
index 0000000..ff92728
--- /dev/null
+++ b/src/arch/mips/include/arch/exception.h
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#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/hlt.h b/src/arch/mips/include/arch/hlt.h
new file mode 100644
index 0000000..851de56
--- /dev/null
+++ b/src/arch/mips/include/arch/hlt.h
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_ARCH_HLT_H
+#define __MIPS_ARCH_HLT_H
+
+static inline __attribute__((always_inline)) void hlt(void)
+{
+ for (;;)
+ ;
+}
+
+#endif /* __MIPS_ARCH_HLT_H */
diff --git a/src/arch/mips/include/arch/io.h b/src/arch/mips/include/arch/io.h
new file mode 100644
index 0000000..d034b09
--- /dev/null
+++ b/src/arch/mips/include/arch/io.h
@@ -0,0 +1,125 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * Based on arch/armv7/include/arch/io.h:
+ * Copyright 2013 Google Inc.
+ * Copyright (C) 1996-2000 Russell King
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_ARCH_IO_H
+#define __MIPS_ARCH_IO_H
+
+#include <types.h>
+#include <arch/cache.h>
+#include <arch/byteorder.h>
+
+static inline uint8_t read8(unsigned long addr)
+{
+ asm("sync");
+ return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t read16(unsigned long addr)
+{
+ asm("sync");
+ return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t read32(unsigned long addr)
+{
+ asm("sync");
+ return *(volatile uint32_t *)addr;
+}
+
+static inline void write8(unsigned long addr, uint8_t val)
+{
+ asm("sync");
+ *(volatile uint8_t *)addr = val;
+ asm("sync");
+}
+
+static inline void write16(unsigned long addr, uint16_t val)
+{
+ asm("sync");
+ *(volatile uint16_t *)addr = val;
+ asm("sync");
+}
+
+static inline void write32(unsigned long addr, uint32_t val)
+{
+ asm("sync");
+ *(volatile uint32_t *)addr = val;
+ asm("sync");
+}
+
+/*
+ * Clear and set bits in one shot. These macros can be used to clear and
+ * set multiple bits in a register using a single call. These macros can
+ * also be used to set a multiple-bit bit pattern using a mask, by
+ * specifying the mask in the 'clear' parameter and the new bit pattern
+ * in the 'set' parameter.
+ */
+
+#define out_arch(type, endian, a, v) write##type(cpu_to_##endian(v), a)
+#define in_arch(type, endian, a) endian##_to_cpu(read##type(a))
+
+#define out_le32(a, v) out_arch(l, le32, a, v)
+#define out_le16(a, v) out_arch(w, le16, a, v)
+
+#define in_le32(a) in_arch(l, le32, a)
+#define in_le16(a) in_arch(w, le16, a)
+
+#define out_be32(a, v) out_arch(l, be32, a, v)
+#define out_be16(a, v) out_arch(w, be16, a, v)
+
+#define in_be32(a) in_arch(l, be32, a)
+#define in_be16(a) in_arch(w, be16, a)
+
+#define out_8(a, v) writeb(v, a)
+#define in_8(a) readb(a)
+
+#define clrbits(type, addr, clear) \
+ out_##type((addr), in_##type(addr) & ~(clear))
+
+#define setbits(type, addr, set) \
+ out_##type((addr), in_##type(addr) | (set))
+
+#define clrsetbits(type, addr, clear, set) \
+ out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
+
+#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
+#define setbits_be32(addr, set) setbits(be32, addr, set)
+#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
+
+#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
+#define setbits_le32(addr, set) setbits(le32, addr, set)
+#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
+
+#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
+#define setbits_be16(addr, set) setbits(be16, addr, set)
+#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
+
+#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
+#define setbits_le16(addr, set) setbits(le16, addr, set)
+#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
+
+#define clrbits_8(addr, clear) clrbits(8, addr, clear)
+#define setbits_8(addr, set) setbits(8, addr, set)
+#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
+
+#endif /* __MIPS_ARCH_IO_H */
diff --git a/src/arch/mips/include/arch/pci_ops.h b/src/arch/mips/include/arch/pci_ops.h
new file mode 100644
index 0000000..1b3f074
--- /dev/null
+++ b/src/arch/mips/include/arch/pci_ops.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef ARCH_MIPS_PCI_OPS_H
+#define ARCH_MIPS_PCI_OPS_H
+
+#include <stddef.h>
+
+static inline const struct pci_bus_operations *pci_config_default(void)
+{
+ return NULL;
+}
+
+#endif
diff --git a/src/arch/mips/include/arch/stages.h b/src/arch/mips/include/arch/stages.h
new file mode 100644
index 0000000..b95ad1d
--- /dev/null
+++ b/src/arch/mips/include/arch/stages.h
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_ARCH_STAGES_H
+#define __MIPS_ARCH_STAGES_H
+
+extern void main(void);
+
+void stage_entry(void);
+void stage_exit(void *);
+void jmp_to_elf_entry(void *entry, unsigned long buffer, unsigned long size);
+
+#endif /* __MIPS_ARCH_STAGES_H */
diff --git a/src/arch/mips/include/arch/types.h b/src/arch/mips/include/arch/types.h
new file mode 100644
index 0000000..c3eae24
--- /dev/null
+++ b/src/arch/mips/include/arch/types.h
@@ -0,0 +1,67 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * Based on src/arch/armv7/include/arch/types.h
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#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/include/bootblock_common.h b/src/arch/mips/include/bootblock_common.h
new file mode 100644
index 0000000..e1960ba
--- /dev/null
+++ b/src/arch/mips/include/bootblock_common.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#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/stdint.h b/src/arch/mips/include/stdint.h
new file mode 100644
index 0000000..5c21fe6
--- /dev/null
+++ b/src/arch/mips/include/stdint.h
@@ -0,0 +1,99 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Based on src/arch/armv7/include/stdint.h
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __MIPS_STDINT_H
+#define __MIPS_STDINT_H
+
+#if defined(__GNUC__)
+#define __HAVE_LONG_LONG__ 1
+#else
+#define __HAVE_LONG_LONG__ 0
+#endif
+
+/* Exact integral types */
+typedef unsigned char uint8_t;
+typedef signed char int8_t;
+
+typedef unsigned short uint16_t;
+typedef signed short int16_t;
+
+typedef unsigned int uint32_t;
+typedef signed int int32_t;
+
+#if __HAVE_LONG_LONG__
+typedef unsigned long long uint64_t;
+typedef signed long long int64_t;
+#endif
+
+/* Small types */
+typedef unsigned char uint_least8_t;
+typedef signed char int_least8_t;
+
+typedef unsigned short uint_least16_t;
+typedef signed short int_least16_t;
+
+typedef unsigned int uint_least32_t;
+typedef signed int int_least32_t;
+
+#if __HAVE_LONG_LONG__
+typedef unsigned long long uint_least64_t;
+typedef signed long long int_least64_t;
+#endif
+
+/* Fast Types */
+typedef unsigned char uint_fast8_t;
+typedef signed char int_fast8_t;
+
+typedef unsigned int uint_fast16_t;
+typedef signed int int_fast16_t;
+
+typedef unsigned int uint_fast32_t;
+typedef signed int int_fast32_t;
+
+#if __HAVE_LONG_LONG__
+typedef unsigned long long uint_fast64_t;
+typedef signed long long int_fast64_t;
+#endif
+
+/* Types for `void *' pointers. */
+typedef int intptr_t;
+typedef unsigned int uintptr_t;
+
+/* Largest integral types */
+#if __HAVE_LONG_LONG__
+typedef long long int intmax_t;
+typedef unsigned long long uintmax_t;
+#else
+typedef long int intmax_t;
+typedef unsigned long int uintmax_t;
+#endif
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+#if __HAVE_LONG_LONG__
+typedef uint64_t u64;
+#endif
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+
+#undef __HAVE_LONG_LONG__
+
+#endif /* __MIPS_STDINT_H */
diff --git a/src/arch/mips/ramstage.ld b/src/arch/mips/ramstage.ld
new file mode 100644
index 0000000..4052444
--- /dev/null
+++ b/src/arch/mips/ramstage.ld
@@ -0,0 +1,121 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * Based on src/arch/arm/ramstage.ld:
+ * Written by Johan Rydberg, based on work by Daniel Kahlin.
+ * Rewritten by Eric Biederman
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+OUTPUT_ARCH(mips)
+
+ENTRY(stage_entry)
+
+PHDRS
+{
+ to_load PT_LOAD;
+}
+
+SECTIONS
+{
+ . = CONFIG_SYS_SDRAM_BASE;
+
+ .text : {
+ _text = .;
+ _start = .;
+ *(.text.stage_entry.mips);
+ *(.text);
+ *(.text.*);
+ . = ALIGN(16);
+ _etext = .;
+ } : to_load
+
+ .ctors : {
+ . = ALIGN(0x100);
+ __CTOR_LIST__ = .;
+ *(.ctors);
+ LONG(0);
+ __CTOR_END__ = .;
+ }
+
+ .rodata : {
+ _rodata = .;
+ . = ALIGN(4);
+ console_drivers = .;
+ KEEP(*(.rodata.console_drivers));
+ econsole_drivers = . ;
+ . = ALIGN(4);
+ pci_drivers = . ;
+ KEEP(*(.rodata.pci_driver));
+ epci_drivers = . ;
+ cpu_drivers = . ;
+ KEEP(*(.rodata.cpu_driver));
+ ecpu_drivers = . ;
+ _bs_init_begin = .;
+ KEEP(*(.bs_init));
+ _bs_init_end = .;
+ *(.rodata)
+ *(.rodata.*)
+ . = ALIGN(4);
+ _erodata = .;
+ }
+
+ .data : {
+ _data = .;
+ *(.data)
+ _edata = .;
+ }
+
+ /* bss will be cleared by cbfs_load_stage */
+ _bss = .;
+ .bss . : {
+ *(.bss)
+ *(.sbss)
+ *(COMMON)
+ }
+ _ebss = .;
+ _end = .;
+
+ /*
+ * coreboot from the perspective of the loader really "ends"
+ * here. Only symbols are placed after this.
+ */
+
+ _heap = .;
+ _eheap = . + CONFIG_HEAP_SIZE;
+
+ _stack = CONFIG_STACK_BOTTOM;
+ _estack = CONFIG_STACK_TOP;
+
+ /*
+ * The ram segment. This includes all memory used by the memory
+ * resident copy of coreboot, except the tables that are produced on
+ * the fly, but including stack and heap.
+ */
+ _ram_seg = _text;
+ _eram_seg = _eheap;
+
+ /* Discard the sections we don't need/want */
+
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ *(.note.*)
+ }
+}
diff --git a/src/arch/mips/romstage.ld b/src/arch/mips/romstage.ld
new file mode 100644
index 0000000..8964285
--- /dev/null
+++ b/src/arch/mips/romstage.ld
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+OUTPUT_ARCH(mips)
+
+ENTRY(stage_entry)
+
+PHDRS
+{
+ to_load PT_LOAD;
+}
+
+preram_cbmem_console = CONFIG_CBMEM_CONSOLE_PRERAM_BASE;
+
+SECTIONS
+{
+ . = CONFIG_ROMSTAGE_BASE;
+
+ .romtext . : {
+ _rom = .;
+ _start = .;
+ *(.text.stage_entry.mips);
+ *(.text.startup);
+ *(.text);
+ } : to_load
+
+ .romdata . : {
+ *(.rodata);
+ *(.data);
+ . = ALIGN(16);
+ _erom = .;
+ }
+
+ /* bss will be cleared by cbfs_load_stage */
+ .bss . : {
+ . = ALIGN(8);
+ _bss = .;
+ *(.bss)
+ *(.sbss)
+ *(COMMON)
+ }
+
+ _ebss = .;
+ _end = .;
+
+ /* Discard the sections we don't need/want */
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ *(.comment.*)
+ *(.note.*)
+ *(.eh_frame);
+ }
+}
diff --git a/src/arch/mips/stages.c b/src/arch/mips/stages.c
new file mode 100644
index 0000000..ae10594
--- /dev/null
+++ b/src/arch/mips/stages.c
@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/stages.h>
+#include <arch/cache.h>
+
+ __attribute__((section(".text.stage_entry.mips"))) void stage_entry(void)
+{
+ main();
+}
+
+void stage_exit(void *addr)
+{
+ void (*doit)(void) = addr;
+
+ /* TODO: synci */
+
+ doit();
+}
diff --git a/src/arch/mips/tables.c b/src/arch/mips/tables.c
new file mode 100644
index 0000000..858fa79
--- /dev/null
+++ b/src/arch/mips/tables.c
@@ -0,0 +1,67 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Based on src/arch/armv7/tables.c:
+ * Copyright (C) 2003 Eric Biederman
+ * Copyright (C) 2005 Steve Magnani
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <cpu/cpu.h>
+#include <boot/tables.h>
+#include <boot/coreboot_tables.h>
+#include <string.h>
+#include <cbmem.h>
+#include <lib.h>
+
+#define MAX_COREBOOT_TABLE_SIZE (8 * 1024)
+
+void cbmem_arch_init(void)
+{
+}
+
+struct lb_memory *write_tables(void)
+{
+ unsigned long table_pointer, new_table_pointer;
+
+ post_code(0x9d);
+
+ table_pointer = (unsigned long)cbmem_add(CBMEM_ID_CBTABLE,
+ MAX_COREBOOT_TABLE_SIZE);
+ if (!table_pointer) {
+ printk(BIOS_ERR, "Could not add CBMEM for coreboot table.\n");
+ return NULL;
+ }
+
+ new_table_pointer = write_coreboot_table(0UL, 0UL, table_pointer,
+ table_pointer);
+
+ if (new_table_pointer > (table_pointer + MAX_COREBOOT_TABLE_SIZE))
+ printk(BIOS_ERR, "coreboot table didn't fit (%lx/%x bytes)\n",
+ new_table_pointer - table_pointer,
+ MAX_COREBOOT_TABLE_SIZE);
+
+ printk(BIOS_DEBUG, "coreboot table: %ld bytes.\n",
+ new_table_pointer - table_pointer);
+
+ post_code(0x9e);
+
+ /* Print CBMEM sections */
+ cbmem_list();
+
+ return get_lb_mem();
+}
diff --git a/src/arch/mips/timer.c b/src/arch/mips/timer.c
new file mode 100644
index 0000000..c38601d
--- /dev/null
+++ b/src/arch/mips/timer.c
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <delay.h>
+#include <timer.h>
+
+void init_timer(void)
+{
+ /* TODO */
+}
+
+void udelay(unsigned usec)
+{
+ /* TODO */
+}
diff --git a/src/cpu/Kconfig b/src/cpu/Kconfig
index 8a6e9d8..f6f0647 100644
--- a/src/cpu/Kconfig
+++ b/src/cpu/Kconfig
@@ -9,6 +9,7 @@ source src/cpu/ti/Kconfig
source src/cpu/amd/Kconfig
source src/cpu/dmp/Kconfig
source src/cpu/intel/Kconfig
+source src/cpu/mips/Kconfig
source src/cpu/via/Kconfig
source src/cpu/qemu-x86/Kconfig
source src/cpu/x86/Kconfig
diff --git a/src/cpu/mips/Kconfig b/src/cpu/mips/Kconfig
new file mode 100644
index 0000000..4507977
--- /dev/null
+++ b/src/cpu/mips/Kconfig
@@ -0,0 +1,36 @@
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2014 Imagination Technologies
+#
+# 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.
+#
+# 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., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301 USA
+#
+
+config CPU_MIPS
+ bool
+ select ARCH_BOOTBLOCK_MIPS
+ select ARCH_ROMSTAGE_MIPS
+ select ARCH_RAMSTAGE_MIPS
+
+config BOOTBLOCK_ROM_OFFSET
+ hex
+ depends on CPU_MIPS
+ default 0x00
+
+config CBFS_HEADER_ROM_OFFSET
+ hex
+ depends on CPU_MIPS
+ default 0x10
diff --git a/toolchain.inc b/toolchain.inc
index 8241e25..83f478b 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -64,7 +64,7 @@ CFLAGS_arm := -mno-unaligned-access -ffunction-sections -fdata-sections
CFLAGS_arm64 := -ffunction-sections -fdata-sections
-CFLAGS_mipsel := -mips32r2 -G 0
+CFLAGS_mipsel := -mips32r2 -G 0 -ffunction-sections -fdata-sections
CFLAGS_x86_32 := -ffunction-sections -fdata-sections
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