[coreboot-gerrit] Patch set updated for coreboot: 7fe1892 Add UCB RISCV support for architecture, soc, and emulation mainboard..
Ronald G. Minnich (rminnich@gmail.com)
gerrit at coreboot.org
Fri Nov 28 06:14:45 CET 2014
Ronald G. Minnich (rminnich at gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7584
-gerrit
commit 7fe18927188283458e6e05760bf9bcfd19216ba3
Author: Ronald G. Minnich <rminnich at gmail.com>
Date: Wed Nov 26 19:25:47 2014 +0000
Add UCB RISCV support for architecture, soc, and emulation mainboard..
Works in the RISCV version of QEMU.
Note that the lzmadecode is so unclean that for now I'm not even going to try to use
it on a 64-bit machine. Hence the change to src/lib/Makefile.inc
We decided in Prague to do this as one thing, because it forms a nice case study
of the bare minimum you need to add to get a new architecture going in qemu.
Change-Id: If5af15c3a70733d219973e0d032746f8ab027e4d
Signed-off-by: Ronald G. Minnich <rminnich at gmail.com>
---
Makefile.inc | 5 +-
src/Kconfig | 5 +
src/arch/riscv/Kconfig | 26 +
src/arch/riscv/Makefile.inc | 117 ++++
src/arch/riscv/boot.c | 30 +
src/arch/riscv/bootblock.S | 104 ++++
src/arch/riscv/bootblock.ld | 58 ++
src/arch/riscv/bootblock_simple.c | 73 +++
src/arch/riscv/cbmem.c | 29 +
src/arch/riscv/id.lds | 6 +
src/arch/riscv/include/arch/atomic.h | 75 +++
src/arch/riscv/include/arch/byteorder.h | 27 +
src/arch/riscv/include/arch/cpu.h | 53 ++
src/arch/riscv/include/arch/early_variables.h | 35 ++
src/arch/riscv/include/arch/encoding.h | 727 ++++++++++++++++++++++
src/arch/riscv/include/arch/exception.h | 39 ++
src/arch/riscv/include/arch/hlt.h | 6 +
src/arch/riscv/include/arch/io.h | 35 ++
src/arch/riscv/include/arch/stages.h | 29 +
src/arch/riscv/include/bootblock_common.h | 16 +
src/arch/riscv/include/stdint.h | 60 ++
src/arch/riscv/misc.c | 9 +
src/arch/riscv/prologue.inc | 22 +
src/arch/riscv/ramstage.ld | 136 ++++
src/arch/riscv/rom_media.c | 100 +++
src/arch/riscv/romstage.ld | 89 +++
src/arch/riscv/stages.c | 52 ++
src/arch/riscv/tables.c | 96 +++
src/console/Kconfig | 2 +-
src/lib/Makefile.inc | 3 +-
src/mainboard/emulation/Kconfig | 4 +
src/mainboard/emulation/qemu-riscv/Kconfig | 97 +++
src/mainboard/emulation/qemu-riscv/Makefile.inc | 19 +
src/mainboard/emulation/qemu-riscv/board_info.txt | 2 +
src/mainboard/emulation/qemu-riscv/bootblock.c | 45 ++
src/mainboard/emulation/qemu-riscv/devicetree.cb | 20 +
src/mainboard/emulation/qemu-riscv/mainboard.c | 34 +
src/mainboard/emulation/qemu-riscv/romstage.c | 29 +
src/mainboard/emulation/qemu-riscv/uart.c | 60 ++
src/soc/Kconfig | 1 +
src/soc/Makefile.inc | 1 +
src/soc/ucb/Kconfig | 1 +
src/soc/ucb/Makefile.inc | 1 +
src/soc/ucb/riscv/Kconfig | 11 +
toolchain.inc | 1 +
45 files changed, 2387 insertions(+), 3 deletions(-)
diff --git a/Makefile.inc b/Makefile.inc
index 3719dd5..79392f4 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -68,7 +68,7 @@ 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
+subdirs-y += src/arch/arm src/arch/arm64 src/arch/x86 src/arch/riscv
subdirs-y += src/mainboard/$(MAINBOARDDIR)
subdirs-y += site-local
@@ -608,6 +608,9 @@ endif
ifeq ($(CONFIG_ARCH_ROMSTAGE_ARM64),y)
ROMSTAGE_ELF := romstage.elf
endif
+ifeq ($(CONFIG_ARCH_ROMSTAGE_RISCV),y)
+ROMSTAGE_ELF := romstage.elf
+endif
ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y)
ROMSTAGE_ELF := romstage_xip.elf
endif
diff --git a/src/Kconfig b/src/Kconfig
index ee0b78e..533bc5c 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -271,9 +271,14 @@ config ARCH_ARM64
bool
default n
+config ARCH_RISCV
+ 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/vendorcode/Kconfig
diff --git a/src/arch/riscv/Kconfig b/src/arch/riscv/Kconfig
new file mode 100644
index 0000000..120203d
--- /dev/null
+++ b/src/arch/riscv/Kconfig
@@ -0,0 +1,26 @@
+config ARCH_BOOTBLOCK_RISCV
+ bool
+ default n
+ select ARCH_RISCV
+
+config ARCH_ROMSTAGE_RISCV
+ bool
+ default n
+
+config ARCH_RAMSTAGE_RISCV
+ bool
+ default n
+
+# If a custom bootblock is necessary, this option should be "select"-ed by
+# the thing that needs it, probably the CPU.
+config RISCV_BOOTBLOCK_CUSTOM
+ bool
+ default n
+
+config CPU_HAS_BOOTBLOCK_INIT
+ bool
+ default n
+
+config MAINBOARD_HAS_BOOTBLOCK_INIT
+ bool
+ default n
diff --git a/src/arch/riscv/Makefile.inc b/src/arch/riscv/Makefile.inc
new file mode 100644
index 0000000..fb9072d
--- /dev/null
+++ b/src/arch/riscv/Makefile.inc
@@ -0,0 +1,117 @@
+################################################################################
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 The ChromiumOS Authors
+##
+## 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
+##
+################################################################################
+
+riscv_flags = -I$(src)/arch/riscv/
+
+riscv_asm_flags =
+
+################################################################################
+## bootblock
+################################################################################
+ifeq ($(CONFIG_ARCH_BOOTBLOCK_RISCV),y)
+
+bootblock_lds = $(src)/arch/riscv/bootblock.ld
+
+bootblock-y = bootblock.S stages.c
+bootblock-y += rom_media.c
+bootblock-y += \
+ $(top)/src/lib/memchr.c \
+ $(top)/src/lib/memcmp.c \
+ $(top)/src/lib/memcpy.c \
+ $(top)/src/lib/memmove.c \
+ $(top)/src/lib/memset.c
+
+$(objcbfs)/bootblock.debug: $(src)/arch/riscv/bootblock.ld $(obj)/ldoptions $$(bootblock-objs)
+ @printf " LINK $(subst $(obj)/,,$(@))\n"
+ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
+ $(LD_bootblock) -m elf64-littleriscv --gc-sections -static -o $@ -L$(obj) $< -T $(src)/arch/riscv/bootblock.ld
+else
+ $(CC_bootblock) $(CFLAGS_bootblock) -nostartfiles -Wl,--gc-sections -static -o $@ -L$(obj) -T $(src)/arch/riscv/bootblock.ld -Wl,--start-group $(bootblock-objs) $(LIBGCC_FILE_NAME_bootblock) -Wl,--end-group
+endif
+
+endif
+
+################################################################################
+## romstage
+################################################################################
+ifeq ($(CONFIG_ARCH_ROMSTAGE_RISCV),y)
+
+romstage-y += stages.c
+romstage-y += rom_media.c
+romstage-y += \
+ $(top)/src/lib/memchr.c \
+ $(top)/src/lib/memcmp.c \
+ $(top)/src/lib/memcpy.c \
+ $(top)/src/lib/memmove.c \
+ $(top)/src/lib/memset.c
+romstage-y += cbmem.c
+
+romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
+
+# Build the romstage
+
+$(objcbfs)/romstage.debug: $$(romstage-objs) $(src)/arch/riscv/romstage.ld $(obj)/ldoptions
+ @printf " LINK $(subst $(obj)/,,$(@))\n"
+ $(CC_romstage) $(CFLAGS_romstage) -nostdlib -Wl,--gc-sections -static -o $@ -L$(obj) -T $(src)/arch/riscv/romstage.ld -Wl,--start-group $(romstage-objs) -Wl,--end-group
+
+romstage-c-ccopts += $(riscv_flags)
+romstage-S-ccopts += $(riscv_asm_flags)
+
+CBFSTOOL_PRE1_OPTS = -v -m riscv -b $(CONFIG_BOOTBLOCK_ROM_OFFSET) -H $(CONFIG_CBFS_HEADER_ROM_OFFSET) -o $(CONFIG_CBFS_ROM_OFFSET)
+CBFSTOOL_PRE_OPTS = -v
+
+endif
+
+################################################################################
+## ramstage
+################################################################################
+ifeq ($(CONFIG_ARCH_RAMSTAGE_RISCV),y)
+
+ramstage-y =
+ramstage-y += rom_media.c
+ramstage-y += stages.c
+ramstage-y += misc.c
+ramstage-y += boot.c
+ramstage-y += cbmem.c
+ramstage-y += tables.c
+ramstage-y += \
+ $(top)/src/lib/memchr.c \
+ $(top)/src/lib/memcmp.c \
+ $(top)/src/lib/memcpy.c \
+ $(top)/src/lib/memmove.c \
+ $(top)/src/lib/memset.c
+
+$(eval $(call create_class_compiler,rmodules,riscv))
+
+ramstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
+
+ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/mainboard.c
+
+# Build the ramstage
+
+$(objcbfs)/ramstage.debug: $$(ramstage-objs) $(src)/arch/riscv/ramstage.ld $(obj)/ldoptions
+ @printf " CC $(subst $(obj)/,,$(@))\n"
+ $(CC_ramstage) $(CFLAGS_ramstage) -nostdlib -Wl,--gc-sections -static -o $@ -L$(obj) -Wl,--start-group $(ramstage-objs) -Wl,--end-group -T $(src)/arch/riscv/ramstage.ld
+
+ramstage-c-ccopts += $(riscv_flags)
+ramstage-S-ccopts += $(riscv_asm_flags)
+
+endif
diff --git a/src/arch/riscv/boot.c b/src/arch/riscv/boot.c
new file mode 100644
index 0000000..ecaf86f
--- /dev/null
+++ b/src/arch/riscv/boot.c
@@ -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
+ */
+
+#include <console/console.h>
+#include <arch/stages.h>
+#include <payload_loader.h>
+#include <console/uart.h>
+
+void arch_payload_run(const struct payload *payload)
+{
+ printk(BIOS_SPEW, "entry = %p\n", payload->entry);
+// uart_rx_byte(0);
+ stage_exit(payload->entry);
+}
diff --git a/src/arch/riscv/bootblock.S b/src/arch/riscv/bootblock.S
new file mode 100644
index 0000000..00962c4
--- /dev/null
+++ b/src/arch/riscv/bootblock.S
@@ -0,0 +1,104 @@
+/*
+ * Early initialization code for aarch64 (a.k.a. armv8)
+ *
+ * Copyright 2013Google 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+// See LICENSE for license details. relating to the _start code in this file.
+#include <arch/encoding.h>
+
+.section ".start", "ax", %progbits
+// Maybe there's a better way.
+.space 0x2000
+.globl _start
+_start:
+
+ // pending figuring out this f-ing toolchain. Hardcode what we know works.
+ la sp, 0x4ef0 // .stacktop
+// la a0, trap_entry
+// la gp, _gp
+// csrw evec, a0
+
+ # clear any pending interrupts
+ csrwi clear_ipi, 0
+
+ li a0, SR_S | SR_PS | SR_EI | SR_S64 | SR_U64
+ or a1, a0, SR_EF | SR_EA
+ csrw status, a1
+ csrr a1, status
+ csrw status, a0
+
+// and a2, a1, SR_EF
+// sw a2, have_fp, t0
+
+// and a2, a1, SR_EA
+// sw a2, have_accelerator, t0
+ call main
+.=0x4000
+.stack:
+.align 8
+ .space 0xf00
+.stacktop:
+ .quad 0
+.align 3
+.stack_size:
+ .quad 0xf00
+
+.globl _cbfs_master_header
+_cbfs_master_header:
+ .balignl 16,0xdeadbeef
+ .align 8
+ // this assembler SUCKS
+ .long 0x4F524243
+ .long 0xdeadbeef
+ .long 0xdeadbeef
+ .long 0xdeadbeef
+ .long 0xdeadbeef
+ .long 0xdeadbeef
+ .long 0xdeadbeef
+ /* The CBFS master header is inserted by cbfstool at the first
+ * aligned offset after the above anchor string is found.
+ * Hence, we leave some space for it.
+ * Assumes 64-byte alignment.
+ */
+ .space 128
+
+reset:
+init_stack_loop:
+
+ .word CONFIG_STACK_SIZE
+ .section ".id", "a", %progbits
+
+ .section ".id", "a", @progbits
+
+ .globl __id_start
+ // fix this bs later. What's wrong with the riscv gcc?
+__id_start:
+ver:
+ .asciz "1" //COREBOOT_VERSION
+vendor:
+ .asciz "ucb" //CONFIG_MAINBOARD_VENDOR
+part:
+ .asciz "1" //CONFIG_MAINBOARD_PART_NUMBER
+.long __id_end + CONFIG_ID_SECTION_OFFSET - ver /* Reverse offset to the vendor id */
+.long __id_end + CONFIG_ID_SECTION_OFFSET - vendor /* Reverse offset to the vendor id */
+.long __id_end + CONFIG_ID_SECTION_OFFSET - part /* Reverse offset to the part number */
+.long CONFIG_ROM_SIZE /* Size of this romimage */
+ .globl __id_end
+
+__id_end:
+.previous
diff --git a/src/arch/riscv/bootblock.ld b/src/arch/riscv/bootblock.ld
new file mode 100644
index 0000000..9f5f53b
--- /dev/null
+++ b/src/arch/riscv/bootblock.ld
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Advanced Micro Devices, Inc.
+ * Copyright (C) 2008-2010 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
+ */
+
+/* We use ELF as output format. So that we can debug the code in some form. */
+OUTPUT_FORMAT("elf64-littleriscv", "elf64-littleriscv", "elf64-littleriscv")
+OUTPUT_ARCH(riscv)
+INCLUDE ldoptions
+
+PHDRS
+{
+ to_load PT_LOAD;
+}
+
+ENTRY(_start)
+TARGET(binary)
+SECTIONS
+{
+ . = CONFIG_BOOTBLOCK_BASE;
+
+ .bootblock . : {
+ *(.start);
+ KEEP(*(.id));
+ *(.text);
+ *(.text.*);
+ *(.rodata);
+ *(.rodata.*);
+ *(.data);
+ *(.data.*);
+ *(.bss);
+ *(.bss.*);
+ *(.sbss);
+ *(.sbss.*);
+ } : to_load = 0xff
+
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ *(.comment.*)
+ *(.note.*)
+ }
+}
diff --git a/src/arch/riscv/bootblock_simple.c b/src/arch/riscv/bootblock_simple.c
new file mode 100644
index 0000000..d8339d1
--- /dev/null
+++ b/src/arch/riscv/bootblock_simple.c
@@ -0,0 +1,73 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 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
+ */
+
+#include <bootblock_common.h>
+#include <arch/cache.h>
+#include <arch/hlt.h>
+#include <arch/stages.h>
+#include <arch/exception.h>
+#include <cbfs.h>
+#include <console/console.h>
+
+static int boot_cpu(void)
+{
+ /*
+ * FIXME: This is a stub for now. All non-boot CPUs should be
+ * waiting for an interrupt. We could move the chunk of assembly
+ * which puts them to sleep in here...
+ */
+ return 1;
+}
+
+void main(void)
+{
+ const char *stage_name = CONFIG_CBFS_PREFIX"/romstage";
+ void *entry = NULL;
+
+ /* Globally disable MMU, caches, and branch prediction (these should
+ * be disabled by default on reset) */
+ dcache_mmu_disable();
+
+ /*
+ * Re-enable icache and branch prediction. MMU and dcache will be
+ * set up later.
+ *
+ * Note: If booting from USB, we need to disable branch prediction
+ * before copying from USB into RAM (FIXME: why?)
+ */
+
+ if (boot_cpu()) {
+ //bootblock_cpu_init();
+ //bootblock_mainboard_init();
+ }
+
+#ifdef CONFIG_BOOTBLOCK_CONSOLE
+ console_init();
+ exception_init();
+#endif
+
+ entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, stage_name);
+
+ printk(BIOS_SPEW, "stage_name %s, entry %p\n", stage_name, entry);
+
+ if (entry) stage_exit(entry);
+ hlt();
+}
diff --git a/src/arch/riscv/cbmem.c b/src/arch/riscv/cbmem.c
new file mode 100644
index 0000000..8d07600
--- /dev/null
+++ b/src/arch/riscv/cbmem.c
@@ -0,0 +1,29 @@
+/*
+ * 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 <cbmem.h>
+
+unsigned long get_top_of_ram(void)
+{
+ return CONFIG_RAMTOP;
+}
+
+void *cbmem_top(void);
+void *cbmem_top(void)
+{
+ return (void *)get_top_of_ram();
+}
diff --git a/src/arch/riscv/id.lds b/src/arch/riscv/id.lds
new file mode 100644
index 0000000..cfd091d
--- /dev/null
+++ b/src/arch/riscv/id.lds
@@ -0,0 +1,6 @@
+SECTIONS {
+ . = (0xffffffff - CONFIG_ID_SECTION_OFFSET) - (__id_end - __id_start) + 1;
+ .id (.): {
+ *(.id)
+ }
+}
diff --git a/src/arch/riscv/include/arch/atomic.h b/src/arch/riscv/include/arch/atomic.h
new file mode 100644
index 0000000..b3e5d24
--- /dev/null
+++ b/src/arch/riscv/include/arch/atomic.h
@@ -0,0 +1,75 @@
+// See LICENSE for license details.
+
+#ifndef _RISCV_ATOMIC_H
+#define _RISCV_ATOMIC_H
+
+#include <arch/encoding.h>
+
+typedef struct { volatile long val; } atomic_t;
+typedef struct { atomic_t lock; } spinlock_t;
+#define SPINLOCK_INIT {{0}}
+
+#define mb() __sync_synchronize()
+
+static inline void atomic_set(atomic_t* a, long val)
+{
+ a->val = val;
+}
+
+static inline long atomic_read(atomic_t* a)
+{
+ return a->val;
+}
+
+static inline long atomic_add(atomic_t* a, long inc)
+{
+ long ret = atomic_read(a);
+ atomic_set(a, ret + inc);
+ return ret;
+}
+
+static inline long atomic_swap(atomic_t* a, long val)
+{
+ long ret = atomic_read(a);
+ atomic_set(a, val);
+ return ret;
+}
+
+static inline long atomic_cas(atomic_t* a, long compare, long swap)
+{
+ long ret = atomic_read(a);
+ if (ret == compare)
+ atomic_set(a, swap);
+ return ret;
+}
+
+static inline void spinlock_lock(spinlock_t* lock)
+{
+ do
+ {
+ while (atomic_read(&lock->lock))
+ ;
+ } while (atomic_swap(&lock->lock, -1));
+ mb();
+}
+
+static inline void spinlock_unlock(spinlock_t* lock)
+{
+ mb();
+ atomic_set(&lock->lock,0);
+}
+
+static inline long spinlock_lock_irqsave(spinlock_t* lock)
+{
+ long flags = clear_csr(status, SR_EI);
+ spinlock_lock(lock);
+ return flags;
+}
+
+static inline void spinlock_unlock_irqrestore(spinlock_t* lock, long flags)
+{
+ spinlock_unlock(lock);
+ set_csr(status, flags & SR_EI);
+}
+
+#endif
diff --git a/src/arch/riscv/include/arch/byteorder.h b/src/arch/riscv/include/arch/byteorder.h
new file mode 100644
index 0000000..8dc069f
--- /dev/null
+++ b/src/arch/riscv/include/arch/byteorder.h
@@ -0,0 +1,27 @@
+#ifndef _BYTEORDER_H
+#define _BYTEORDER_H
+
+#define __LITTLE_ENDIAN 1234
+
+#include <stdint.h>
+#include <swab.h>
+
+#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 /* _BYTEORDER_H */
diff --git a/src/arch/riscv/include/arch/cpu.h b/src/arch/riscv/include/arch/cpu.h
new file mode 100644
index 0000000..7fc85a5
--- /dev/null
+++ b/src/arch/riscv/include/arch/cpu.h
@@ -0,0 +1,53 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2012 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_CPU_H__
+#define __ARCH_CPU_H__
+
+#define asmlinkage
+
+#if !defined(__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;
+#if CONFIG_COOP_MULTITASKING
+ struct thread *thread;
+#endif
+};
+
+struct cpuinfo_riscv {
+ uint8_t riscv; /* CPU family */
+ uint8_t riscv_vendor; /* CPU vendor */
+ uint8_t riscv_model;
+};
+
+#endif
+
+struct cpu_info *cpu_info(void);
+#endif /* __ARCH_CPU_H__ */
+
diff --git a/src/arch/riscv/include/arch/early_variables.h b/src/arch/riscv/include/arch/early_variables.h
new file mode 100644
index 0000000..3a1f20d
--- /dev/null
+++ b/src/arch/riscv/include/arch/early_variables.h
@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
+ *
+ * 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_EARLY_VARIABLES_H
+#define ARCH_EARLY_VARIABLES_H
+
+#if defined(CONFIG_CAR_MIGRATION) && CONFIG_CAR_MIGRATION
+ #error "This is RISCV, silly... we don't have CAR here."
+#endif
+
+#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) do { (var) = (val); } while (0)
+static inline void car_migrate_variables(void) { }
+
+#endif
diff --git a/src/arch/riscv/include/arch/encoding.h b/src/arch/riscv/include/arch/encoding.h
new file mode 100644
index 0000000..089a8a9
--- /dev/null
+++ b/src/arch/riscv/include/arch/encoding.h
@@ -0,0 +1,727 @@
+// See LICENSE for license details.
+
+#ifndef RISCV_CSR_ENCODING_H
+#define RISCV_CSR_ENCODING_H
+
+#define SR_S 0x00000001
+#define SR_PS 0x00000002
+#define SR_EI 0x00000004
+#define SR_PEI 0x00000008
+#define SR_EF 0x00000010
+#define SR_U64 0x00000020
+#define SR_S64 0x00000040
+#define SR_VM 0x00000080
+#define SR_EA 0x00000100
+#define SR_IM 0x00FF0000
+#define SR_IP 0xFF000000
+#define SR_ZERO ~(SR_S|SR_PS|SR_EI|SR_PEI|SR_EF|SR_U64|SR_S64|SR_VM|SR_EA|SR_IM|SR_IP)
+#define SR_IM_SHIFT 16
+#define SR_IP_SHIFT 24
+
+#define IRQ_COP 2
+#define IRQ_IPI 5
+#define IRQ_HOST 6
+#define IRQ_TIMER 7
+
+#define IMPL_SPIKE 1
+#define IMPL_ROCKET 2
+
+// page table entry (PTE) fields
+#define PTE_V 0x001 // Entry is a page Table descriptor
+#define PTE_T 0x002 // Entry is a page Table, not a terminal node
+#define PTE_G 0x004 // Global
+#define PTE_UR 0x008 // User Write permission
+#define PTE_UW 0x010 // User Read permission
+#define PTE_UX 0x020 // User eXecute permission
+#define PTE_SR 0x040 // Supervisor Read permission
+#define PTE_SW 0x080 // Supervisor Write permission
+#define PTE_SX 0x100 // Supervisor eXecute permission
+#define PTE_PERM (PTE_SR | PTE_SW | PTE_SX | PTE_UR | PTE_UW | PTE_UX)
+
+#ifdef __riscv
+
+#ifdef __riscv64
+# define RISCV_PGLEVELS 3
+# define RISCV_PGSHIFT 13
+#else
+# define RISCV_PGLEVELS 2
+# define RISCV_PGSHIFT 12
+#endif
+#define RISCV_PGLEVEL_BITS 10
+#define RISCV_PGSIZE (1 << RISCV_PGSHIFT)
+
+#ifndef __ASSEMBLER__
+
+#define read_csr(reg) ({ long __tmp; \
+ asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \
+ __tmp; })
+
+#define write_csr(reg, val) \
+ asm volatile ("csrw " #reg ", %0" :: "r"(val))
+
+#define swap_csr(reg, val) ({ long __tmp; \
+ asm volatile ("csrrw %0, " #reg ", %1" : "=r"(__tmp) : "r"(val)); \
+ __tmp; })
+
+#define set_csr(reg, bit) ({ long __tmp; \
+ if (__builtin_constant_p(bit) && (bit) < 32) \
+ asm volatile ("csrrs %0, " #reg ", %1" : "=r"(__tmp) : "i"(bit)); \
+ else \
+ asm volatile ("csrrs %0, " #reg ", %1" : "=r"(__tmp) : "r"(bit)); \
+ __tmp; })
+
+#define clear_csr(reg, bit) ({ long __tmp; \
+ if (__builtin_constant_p(bit) && (bit) < 32) \
+ asm volatile ("csrrc %0, " #reg ", %1" : "=r"(__tmp) : "i"(bit)); \
+ else \
+ asm volatile ("csrrc %0, " #reg ", %1" : "=r"(__tmp) : "r"(bit)); \
+ __tmp; })
+
+#define rdtime() ({ unsigned long __tmp; \
+ asm volatile ("rdtime %0" : "=r"(__tmp)); \
+ __tmp; })
+
+#define rdcycle() ({ unsigned long __tmp; \
+ asm volatile ("rdcycle %0" : "=r"(__tmp)); \
+ __tmp; })
+
+#define rdinstret() ({ unsigned long __tmp; \
+ asm volatile ("rdinstret %0" : "=r"(__tmp)); \
+ __tmp; })
+
+#endif
+
+#endif
+
+#endif
+/* Automatically generated by parse-opcodes */
+#ifndef RISCV_ENCODING_H
+#define RISCV_ENCODING_H
+#define MATCH_FMV_S_X 0xf0000053
+#define MASK_FMV_S_X 0xfff0707f
+#define MATCH_AMOXOR_W 0x2000202f
+#define MASK_AMOXOR_W 0xf800707f
+#define MATCH_REMUW 0x200703b
+#define MASK_REMUW 0xfe00707f
+#define MATCH_FMIN_D 0x2a000053
+#define MASK_FMIN_D 0xfe00707f
+#define MATCH_AMOMAX_D 0xa000302f
+#define MASK_AMOMAX_D 0xf800707f
+#define MATCH_BLTU 0x6063
+#define MASK_BLTU 0x707f
+#define MATCH_FSGNJN_D 0x22001053
+#define MASK_FSGNJN_D 0xfe00707f
+#define MATCH_FMIN_S 0x28000053
+#define MASK_FMIN_S 0xfe00707f
+#define MATCH_CSRRW 0x1073
+#define MASK_CSRRW 0x707f
+#define MATCH_SLLIW 0x101b
+#define MASK_SLLIW 0xfe00707f
+#define MATCH_LB 0x3
+#define MASK_LB 0x707f
+#define MATCH_FMAX_S 0x28001053
+#define MASK_FMAX_S 0xfe00707f
+#define MATCH_LH 0x1003
+#define MASK_LH 0x707f
+#define MATCH_FCVT_D_W 0xd2000053
+#define MASK_FCVT_D_W 0xfff0007f
+#define MATCH_LW 0x2003
+#define MASK_LW 0x707f
+#define MATCH_ADD 0x33
+#define MASK_ADD 0xfe00707f
+#define MATCH_CSRRC 0x3073
+#define MASK_CSRRC 0x707f
+#define MATCH_FMAX_D 0x2a001053
+#define MASK_FMAX_D 0xfe00707f
+#define MATCH_BNE 0x1063
+#define MASK_BNE 0x707f
+#define MATCH_FCVT_S_D 0x40100053
+#define MASK_FCVT_S_D 0xfff0007f
+#define MATCH_BGEU 0x7063
+#define MASK_BGEU 0x707f
+#define MATCH_FADD_D 0x2000053
+#define MASK_FADD_D 0xfe00007f
+#define MATCH_SLTIU 0x3013
+#define MASK_SLTIU 0x707f
+#define MATCH_FADD_S 0x53
+#define MASK_FADD_S 0xfe00007f
+#define MATCH_FCLASS_D 0xe2001053
+#define MASK_FCLASS_D 0xfff0707f
+#define MATCH_FCVT_S_W 0xd0000053
+#define MASK_FCVT_S_W 0xfff0007f
+#define MATCH_MUL 0x2000033
+#define MASK_MUL 0xfe00707f
+#define MATCH_AMOMINU_D 0xc000302f
+#define MASK_AMOMINU_D 0xf800707f
+#define MATCH_FCVT_S_LU 0xd0300053
+#define MASK_FCVT_S_LU 0xfff0007f
+#define MATCH_SRLI 0x5013
+#define MASK_SRLI 0xfc00707f
+#define MATCH_AMOMINU_W 0xc000202f
+#define MASK_AMOMINU_W 0xf800707f
+#define MATCH_DIVUW 0x200503b
+#define MASK_DIVUW 0xfe00707f
+#define MATCH_MULW 0x200003b
+#define MASK_MULW 0xfe00707f
+#define MATCH_SRLW 0x503b
+#define MASK_SRLW 0xfe00707f
+#define MATCH_DIV 0x2004033
+#define MASK_DIV 0xfe00707f
+#define MATCH_FDIV_D 0x1a000053
+#define MASK_FDIV_D 0xfe00007f
+#define MATCH_FENCE 0xf
+#define MASK_FENCE 0x707f
+#define MATCH_FNMSUB_S 0x4b
+#define MASK_FNMSUB_S 0x600007f
+#define MATCH_FCVT_L_S 0xc0200053
+#define MASK_FCVT_L_S 0xfff0007f
+#define MATCH_SBREAK 0x100073
+#define MASK_SBREAK 0xffffffff
+#define MATCH_FLE_S 0xa0000053
+#define MASK_FLE_S 0xfe00707f
+#define MATCH_FDIV_S 0x18000053
+#define MASK_FDIV_S 0xfe00007f
+#define MATCH_FLE_D 0xa2000053
+#define MASK_FLE_D 0xfe00707f
+#define MATCH_FENCE_I 0x100f
+#define MASK_FENCE_I 0x707f
+#define MATCH_FNMSUB_D 0x200004b
+#define MASK_FNMSUB_D 0x600007f
+#define MATCH_ADDW 0x3b
+#define MASK_ADDW 0xfe00707f
+#define MATCH_SLL 0x1033
+#define MASK_SLL 0xfe00707f
+#define MATCH_XOR 0x4033
+#define MASK_XOR 0xfe00707f
+#define MATCH_SUB 0x40000033
+#define MASK_SUB 0xfe00707f
+#define MATCH_BLT 0x4063
+#define MASK_BLT 0x707f
+#define MATCH_SCALL 0x73
+#define MASK_SCALL 0xffffffff
+#define MATCH_FCLASS_S 0xe0001053
+#define MASK_FCLASS_S 0xfff0707f
+#define MATCH_SC_W 0x1800202f
+#define MASK_SC_W 0xf800707f
+#define MATCH_REM 0x2006033
+#define MASK_REM 0xfe00707f
+#define MATCH_SRLIW 0x501b
+#define MASK_SRLIW 0xfe00707f
+#define MATCH_LUI 0x37
+#define MASK_LUI 0x7f
+#define MATCH_CSRRCI 0x7073
+#define MASK_CSRRCI 0x707f
+#define MATCH_ADDI 0x13
+#define MASK_ADDI 0x707f
+#define MATCH_MULH 0x2001033
+#define MASK_MULH 0xfe00707f
+#define MATCH_FMUL_S 0x10000053
+#define MASK_FMUL_S 0xfe00007f
+#define MATCH_CSRRSI 0x6073
+#define MASK_CSRRSI 0x707f
+#define MATCH_SRAI 0x40005013
+#define MASK_SRAI 0xfc00707f
+#define MATCH_AMOAND_D 0x6000302f
+#define MASK_AMOAND_D 0xf800707f
+#define MATCH_FLT_D 0xa2001053
+#define MASK_FLT_D 0xfe00707f
+#define MATCH_SRAW 0x4000503b
+#define MASK_SRAW 0xfe00707f
+#define MATCH_FMUL_D 0x12000053
+#define MASK_FMUL_D 0xfe00007f
+#define MATCH_LD 0x3003
+#define MASK_LD 0x707f
+#define MATCH_ORI 0x6013
+#define MASK_ORI 0x707f
+#define MATCH_CSRRS 0x2073
+#define MASK_CSRRS 0x707f
+#define MATCH_FLT_S 0xa0001053
+#define MASK_FLT_S 0xfe00707f
+#define MATCH_ADDIW 0x1b
+#define MASK_ADDIW 0x707f
+#define MATCH_AMOAND_W 0x6000202f
+#define MASK_AMOAND_W 0xf800707f
+#define MATCH_FEQ_S 0xa0002053
+#define MASK_FEQ_S 0xfe00707f
+#define MATCH_FSGNJX_D 0x22002053
+#define MASK_FSGNJX_D 0xfe00707f
+#define MATCH_SRA 0x40005033
+#define MASK_SRA 0xfe00707f
+#define MATCH_BGE 0x5063
+#define MASK_BGE 0x707f
+#define MATCH_SRAIW 0x4000501b
+#define MASK_SRAIW 0xfe00707f
+#define MATCH_SRL 0x5033
+#define MASK_SRL 0xfe00707f
+#define MATCH_FSUB_D 0xa000053
+#define MASK_FSUB_D 0xfe00007f
+#define MATCH_FSGNJX_S 0x20002053
+#define MASK_FSGNJX_S 0xfe00707f
+#define MATCH_FEQ_D 0xa2002053
+#define MASK_FEQ_D 0xfe00707f
+#define MATCH_FCVT_D_WU 0xd2100053
+#define MASK_FCVT_D_WU 0xfff0007f
+#define MATCH_OR 0x6033
+#define MASK_OR 0xfe00707f
+#define MATCH_FCVT_WU_D 0xc2100053
+#define MASK_FCVT_WU_D 0xfff0007f
+#define MATCH_SUBW 0x4000003b
+#define MASK_SUBW 0xfe00707f
+#define MATCH_FCVT_D_L 0xd2200053
+#define MASK_FCVT_D_L 0xfff0007f
+#define MATCH_AMOMAXU_D 0xe000302f
+#define MASK_AMOMAXU_D 0xf800707f
+#define MATCH_XORI 0x4013
+#define MASK_XORI 0x707f
+#define MATCH_AMOXOR_D 0x2000302f
+#define MASK_AMOXOR_D 0xf800707f
+#define MATCH_AMOMAXU_W 0xe000202f
+#define MASK_AMOMAXU_W 0xf800707f
+#define MATCH_FCVT_WU_S 0xc0100053
+#define MASK_FCVT_WU_S 0xfff0007f
+#define MATCH_ANDI 0x7013
+#define MASK_ANDI 0x707f
+#define MATCH_FMV_X_S 0xe0000053
+#define MASK_FMV_X_S 0xfff0707f
+#define MATCH_SRET 0x80000073
+#define MASK_SRET 0xffffffff
+#define MATCH_FNMADD_S 0x4f
+#define MASK_FNMADD_S 0x600007f
+#define MATCH_JAL 0x6f
+#define MASK_JAL 0x7f
+#define MATCH_LWU 0x6003
+#define MASK_LWU 0x707f
+#define MATCH_FMV_X_D 0xe2000053
+#define MASK_FMV_X_D 0xfff0707f
+#define MATCH_FCVT_D_S 0x42000053
+#define MASK_FCVT_D_S 0xfff0007f
+#define MATCH_FNMADD_D 0x200004f
+#define MASK_FNMADD_D 0x600007f
+#define MATCH_AMOADD_D 0x302f
+#define MASK_AMOADD_D 0xf800707f
+#define MATCH_LR_D 0x1000302f
+#define MASK_LR_D 0xf9f0707f
+#define MATCH_FCVT_W_S 0xc0000053
+#define MASK_FCVT_W_S 0xfff0007f
+#define MATCH_MULHSU 0x2002033
+#define MASK_MULHSU 0xfe00707f
+#define MATCH_AMOADD_W 0x202f
+#define MASK_AMOADD_W 0xf800707f
+#define MATCH_FCVT_D_LU 0xd2300053
+#define MASK_FCVT_D_LU 0xfff0007f
+#define MATCH_LR_W 0x1000202f
+#define MASK_LR_W 0xf9f0707f
+#define MATCH_FCVT_W_D 0xc2000053
+#define MASK_FCVT_W_D 0xfff0007f
+#define MATCH_SLT 0x2033
+#define MASK_SLT 0xfe00707f
+#define MATCH_SLLW 0x103b
+#define MASK_SLLW 0xfe00707f
+#define MATCH_AMOOR_D 0x4000302f
+#define MASK_AMOOR_D 0xf800707f
+#define MATCH_SLTI 0x2013
+#define MASK_SLTI 0x707f
+#define MATCH_REMU 0x2007033
+#define MASK_REMU 0xfe00707f
+#define MATCH_FLW 0x2007
+#define MASK_FLW 0x707f
+#define MATCH_REMW 0x200603b
+#define MASK_REMW 0xfe00707f
+#define MATCH_SLTU 0x3033
+#define MASK_SLTU 0xfe00707f
+#define MATCH_SLLI 0x1013
+#define MASK_SLLI 0xfc00707f
+#define MATCH_AMOOR_W 0x4000202f
+#define MASK_AMOOR_W 0xf800707f
+#define MATCH_BEQ 0x63
+#define MASK_BEQ 0x707f
+#define MATCH_FLD 0x3007
+#define MASK_FLD 0x707f
+#define MATCH_FSUB_S 0x8000053
+#define MASK_FSUB_S 0xfe00007f
+#define MATCH_AND 0x7033
+#define MASK_AND 0xfe00707f
+#define MATCH_FMV_D_X 0xf2000053
+#define MASK_FMV_D_X 0xfff0707f
+#define MATCH_LBU 0x4003
+#define MASK_LBU 0x707f
+#define MATCH_FSGNJ_S 0x20000053
+#define MASK_FSGNJ_S 0xfe00707f
+#define MATCH_AMOMAX_W 0xa000202f
+#define MASK_AMOMAX_W 0xf800707f
+#define MATCH_FSGNJ_D 0x22000053
+#define MASK_FSGNJ_D 0xfe00707f
+#define MATCH_MULHU 0x2003033
+#define MASK_MULHU 0xfe00707f
+#define MATCH_FCVT_L_D 0xc2200053
+#define MASK_FCVT_L_D 0xfff0007f
+#define MATCH_FCVT_S_WU 0xd0100053
+#define MASK_FCVT_S_WU 0xfff0007f
+#define MATCH_FCVT_LU_S 0xc0300053
+#define MASK_FCVT_LU_S 0xfff0007f
+#define MATCH_FCVT_S_L 0xd0200053
+#define MASK_FCVT_S_L 0xfff0007f
+#define MATCH_AUIPC 0x17
+#define MASK_AUIPC 0x7f
+#define MATCH_FCVT_LU_D 0xc2300053
+#define MASK_FCVT_LU_D 0xfff0007f
+#define MATCH_CSRRWI 0x5073
+#define MASK_CSRRWI 0x707f
+#define MATCH_SC_D 0x1800302f
+#define MASK_SC_D 0xf800707f
+#define MATCH_FMADD_S 0x43
+#define MASK_FMADD_S 0x600007f
+#define MATCH_FSQRT_S 0x58000053
+#define MASK_FSQRT_S 0xfff0007f
+#define MATCH_AMOMIN_W 0x8000202f
+#define MASK_AMOMIN_W 0xf800707f
+#define MATCH_FSGNJN_S 0x20001053
+#define MASK_FSGNJN_S 0xfe00707f
+#define MATCH_AMOSWAP_D 0x800302f
+#define MASK_AMOSWAP_D 0xf800707f
+#define MATCH_FSQRT_D 0x5a000053
+#define MASK_FSQRT_D 0xfff0007f
+#define MATCH_FMADD_D 0x2000043
+#define MASK_FMADD_D 0x600007f
+#define MATCH_DIVW 0x200403b
+#define MASK_DIVW 0xfe00707f
+#define MATCH_AMOMIN_D 0x8000302f
+#define MASK_AMOMIN_D 0xf800707f
+#define MATCH_DIVU 0x2005033
+#define MASK_DIVU 0xfe00707f
+#define MATCH_AMOSWAP_W 0x800202f
+#define MASK_AMOSWAP_W 0xf800707f
+#define MATCH_JALR 0x67
+#define MASK_JALR 0x707f
+#define MATCH_FSD 0x3027
+#define MASK_FSD 0x707f
+#define MATCH_SW 0x2023
+#define MASK_SW 0x707f
+#define MATCH_FMSUB_S 0x47
+#define MASK_FMSUB_S 0x600007f
+#define MATCH_LHU 0x5003
+#define MASK_LHU 0x707f
+#define MATCH_SH 0x1023
+#define MASK_SH 0x707f
+#define MATCH_FSW 0x2027
+#define MASK_FSW 0x707f
+#define MATCH_SB 0x23
+#define MASK_SB 0x707f
+#define MATCH_FMSUB_D 0x2000047
+#define MASK_FMSUB_D 0x600007f
+#define MATCH_SD 0x3023
+#define MASK_SD 0x707f
+#define CSR_FFLAGS 0x1
+#define CSR_FRM 0x2
+#define CSR_FCSR 0x3
+#define CSR_STATS 0xc0
+#define CSR_SUP0 0x500
+#define CSR_SUP1 0x501
+#define CSR_EPC 0x502
+#define CSR_BADVADDR 0x503
+#define CSR_PTBR 0x504
+#define CSR_ASID 0x505
+#define CSR_COUNT 0x506
+#define CSR_COMPARE 0x507
+#define CSR_EVEC 0x508
+#define CSR_CAUSE 0x509
+#define CSR_STATUS 0x50a
+#define CSR_HARTID 0x50b
+#define CSR_IMPL 0x50c
+#define CSR_FATC 0x50d
+#define CSR_SEND_IPI 0x50e
+#define CSR_CLEAR_IPI 0x50f
+#define CSR_RESET 0x51d
+#define CSR_TOHOST 0x51e
+#define CSR_FROMHOST 0x51f
+#define CSR_CYCLE 0xc00
+#define CSR_TIME 0xc01
+#define CSR_INSTRET 0xc02
+#define CSR_UARCH0 0xcc0
+#define CSR_UARCH1 0xcc1
+#define CSR_UARCH2 0xcc2
+#define CSR_UARCH3 0xcc3
+#define CSR_UARCH4 0xcc4
+#define CSR_UARCH5 0xcc5
+#define CSR_UARCH6 0xcc6
+#define CSR_UARCH7 0xcc7
+#define CSR_UARCH8 0xcc8
+#define CSR_UARCH9 0xcc9
+#define CSR_UARCH10 0xcca
+#define CSR_UARCH11 0xccb
+#define CSR_UARCH12 0xccc
+#define CSR_UARCH13 0xccd
+#define CSR_UARCH14 0xcce
+#define CSR_UARCH15 0xccf
+#define CSR_COUNTH 0x586
+#define CSR_CYCLEH 0xc80
+#define CSR_TIMEH 0xc81
+#define CSR_INSTRETH 0xc82
+#define CAUSE_MISALIGNED_FETCH 0x0
+#define CAUSE_FAULT_FETCH 0x1
+#define CAUSE_ILLEGAL_INSTRUCTION 0x2
+#define CAUSE_PRIVILEGED_INSTRUCTION 0x3
+#define CAUSE_FP_DISABLED 0x4
+#define CAUSE_SYSCALL 0x6
+#define CAUSE_BREAKPOINT 0x7
+#define CAUSE_MISALIGNED_LOAD 0x8
+#define CAUSE_MISALIGNED_STORE 0x9
+#define CAUSE_FAULT_LOAD 0xa
+#define CAUSE_FAULT_STORE 0xb
+#define CAUSE_ACCELERATOR_DISABLED 0xc
+#endif
+#ifdef DECLARE_INSN
+DECLARE_INSN(fmv_s_x, MATCH_FMV_S_X, MASK_FMV_S_X)
+DECLARE_INSN(amoxor_w, MATCH_AMOXOR_W, MASK_AMOXOR_W)
+DECLARE_INSN(remuw, MATCH_REMUW, MASK_REMUW)
+DECLARE_INSN(fmin_d, MATCH_FMIN_D, MASK_FMIN_D)
+DECLARE_INSN(amomax_d, MATCH_AMOMAX_D, MASK_AMOMAX_D)
+DECLARE_INSN(bltu, MATCH_BLTU, MASK_BLTU)
+DECLARE_INSN(fsgnjn_d, MATCH_FSGNJN_D, MASK_FSGNJN_D)
+DECLARE_INSN(fmin_s, MATCH_FMIN_S, MASK_FMIN_S)
+DECLARE_INSN(csrrw, MATCH_CSRRW, MASK_CSRRW)
+DECLARE_INSN(slliw, MATCH_SLLIW, MASK_SLLIW)
+DECLARE_INSN(lb, MATCH_LB, MASK_LB)
+DECLARE_INSN(fmax_s, MATCH_FMAX_S, MASK_FMAX_S)
+DECLARE_INSN(lh, MATCH_LH, MASK_LH)
+DECLARE_INSN(fcvt_d_w, MATCH_FCVT_D_W, MASK_FCVT_D_W)
+DECLARE_INSN(lw, MATCH_LW, MASK_LW)
+DECLARE_INSN(add, MATCH_ADD, MASK_ADD)
+DECLARE_INSN(csrrc, MATCH_CSRRC, MASK_CSRRC)
+DECLARE_INSN(fmax_d, MATCH_FMAX_D, MASK_FMAX_D)
+DECLARE_INSN(bne, MATCH_BNE, MASK_BNE)
+DECLARE_INSN(fcvt_s_d, MATCH_FCVT_S_D, MASK_FCVT_S_D)
+DECLARE_INSN(bgeu, MATCH_BGEU, MASK_BGEU)
+DECLARE_INSN(fadd_d, MATCH_FADD_D, MASK_FADD_D)
+DECLARE_INSN(sltiu, MATCH_SLTIU, MASK_SLTIU)
+DECLARE_INSN(fadd_s, MATCH_FADD_S, MASK_FADD_S)
+DECLARE_INSN(fclass_d, MATCH_FCLASS_D, MASK_FCLASS_D)
+DECLARE_INSN(fcvt_s_w, MATCH_FCVT_S_W, MASK_FCVT_S_W)
+DECLARE_INSN(mul, MATCH_MUL, MASK_MUL)
+DECLARE_INSN(amominu_d, MATCH_AMOMINU_D, MASK_AMOMINU_D)
+DECLARE_INSN(fcvt_s_lu, MATCH_FCVT_S_LU, MASK_FCVT_S_LU)
+DECLARE_INSN(srli, MATCH_SRLI, MASK_SRLI)
+DECLARE_INSN(amominu_w, MATCH_AMOMINU_W, MASK_AMOMINU_W)
+DECLARE_INSN(divuw, MATCH_DIVUW, MASK_DIVUW)
+DECLARE_INSN(mulw, MATCH_MULW, MASK_MULW)
+DECLARE_INSN(srlw, MATCH_SRLW, MASK_SRLW)
+DECLARE_INSN(div, MATCH_DIV, MASK_DIV)
+DECLARE_INSN(fdiv_d, MATCH_FDIV_D, MASK_FDIV_D)
+DECLARE_INSN(fence, MATCH_FENCE, MASK_FENCE)
+DECLARE_INSN(fnmsub_s, MATCH_FNMSUB_S, MASK_FNMSUB_S)
+DECLARE_INSN(fcvt_l_s, MATCH_FCVT_L_S, MASK_FCVT_L_S)
+DECLARE_INSN(sbreak, MATCH_SBREAK, MASK_SBREAK)
+DECLARE_INSN(fle_s, MATCH_FLE_S, MASK_FLE_S)
+DECLARE_INSN(fdiv_s, MATCH_FDIV_S, MASK_FDIV_S)
+DECLARE_INSN(fle_d, MATCH_FLE_D, MASK_FLE_D)
+DECLARE_INSN(fence_i, MATCH_FENCE_I, MASK_FENCE_I)
+DECLARE_INSN(fnmsub_d, MATCH_FNMSUB_D, MASK_FNMSUB_D)
+DECLARE_INSN(addw, MATCH_ADDW, MASK_ADDW)
+DECLARE_INSN(sll, MATCH_SLL, MASK_SLL)
+DECLARE_INSN(xor, MATCH_XOR, MASK_XOR)
+DECLARE_INSN(sub, MATCH_SUB, MASK_SUB)
+DECLARE_INSN(blt, MATCH_BLT, MASK_BLT)
+DECLARE_INSN(scall, MATCH_SCALL, MASK_SCALL)
+DECLARE_INSN(fclass_s, MATCH_FCLASS_S, MASK_FCLASS_S)
+DECLARE_INSN(sc_w, MATCH_SC_W, MASK_SC_W)
+DECLARE_INSN(rem, MATCH_REM, MASK_REM)
+DECLARE_INSN(srliw, MATCH_SRLIW, MASK_SRLIW)
+DECLARE_INSN(lui, MATCH_LUI, MASK_LUI)
+DECLARE_INSN(csrrci, MATCH_CSRRCI, MASK_CSRRCI)
+DECLARE_INSN(addi, MATCH_ADDI, MASK_ADDI)
+DECLARE_INSN(mulh, MATCH_MULH, MASK_MULH)
+DECLARE_INSN(fmul_s, MATCH_FMUL_S, MASK_FMUL_S)
+DECLARE_INSN(csrrsi, MATCH_CSRRSI, MASK_CSRRSI)
+DECLARE_INSN(srai, MATCH_SRAI, MASK_SRAI)
+DECLARE_INSN(amoand_d, MATCH_AMOAND_D, MASK_AMOAND_D)
+DECLARE_INSN(flt_d, MATCH_FLT_D, MASK_FLT_D)
+DECLARE_INSN(sraw, MATCH_SRAW, MASK_SRAW)
+DECLARE_INSN(fmul_d, MATCH_FMUL_D, MASK_FMUL_D)
+DECLARE_INSN(ld, MATCH_LD, MASK_LD)
+DECLARE_INSN(ori, MATCH_ORI, MASK_ORI)
+DECLARE_INSN(csrrs, MATCH_CSRRS, MASK_CSRRS)
+DECLARE_INSN(flt_s, MATCH_FLT_S, MASK_FLT_S)
+DECLARE_INSN(addiw, MATCH_ADDIW, MASK_ADDIW)
+DECLARE_INSN(amoand_w, MATCH_AMOAND_W, MASK_AMOAND_W)
+DECLARE_INSN(feq_s, MATCH_FEQ_S, MASK_FEQ_S)
+DECLARE_INSN(fsgnjx_d, MATCH_FSGNJX_D, MASK_FSGNJX_D)
+DECLARE_INSN(sra, MATCH_SRA, MASK_SRA)
+DECLARE_INSN(bge, MATCH_BGE, MASK_BGE)
+DECLARE_INSN(sraiw, MATCH_SRAIW, MASK_SRAIW)
+DECLARE_INSN(srl, MATCH_SRL, MASK_SRL)
+DECLARE_INSN(fsub_d, MATCH_FSUB_D, MASK_FSUB_D)
+DECLARE_INSN(fsgnjx_s, MATCH_FSGNJX_S, MASK_FSGNJX_S)
+DECLARE_INSN(feq_d, MATCH_FEQ_D, MASK_FEQ_D)
+DECLARE_INSN(fcvt_d_wu, MATCH_FCVT_D_WU, MASK_FCVT_D_WU)
+DECLARE_INSN(or, MATCH_OR, MASK_OR)
+DECLARE_INSN(fcvt_wu_d, MATCH_FCVT_WU_D, MASK_FCVT_WU_D)
+DECLARE_INSN(subw, MATCH_SUBW, MASK_SUBW)
+DECLARE_INSN(fcvt_d_l, MATCH_FCVT_D_L, MASK_FCVT_D_L)
+DECLARE_INSN(amomaxu_d, MATCH_AMOMAXU_D, MASK_AMOMAXU_D)
+DECLARE_INSN(xori, MATCH_XORI, MASK_XORI)
+DECLARE_INSN(amoxor_d, MATCH_AMOXOR_D, MASK_AMOXOR_D)
+DECLARE_INSN(amomaxu_w, MATCH_AMOMAXU_W, MASK_AMOMAXU_W)
+DECLARE_INSN(fcvt_wu_s, MATCH_FCVT_WU_S, MASK_FCVT_WU_S)
+DECLARE_INSN(andi, MATCH_ANDI, MASK_ANDI)
+DECLARE_INSN(fmv_x_s, MATCH_FMV_X_S, MASK_FMV_X_S)
+DECLARE_INSN(sret, MATCH_SRET, MASK_SRET)
+DECLARE_INSN(fnmadd_s, MATCH_FNMADD_S, MASK_FNMADD_S)
+DECLARE_INSN(jal, MATCH_JAL, MASK_JAL)
+DECLARE_INSN(lwu, MATCH_LWU, MASK_LWU)
+DECLARE_INSN(fmv_x_d, MATCH_FMV_X_D, MASK_FMV_X_D)
+DECLARE_INSN(fcvt_d_s, MATCH_FCVT_D_S, MASK_FCVT_D_S)
+DECLARE_INSN(fnmadd_d, MATCH_FNMADD_D, MASK_FNMADD_D)
+DECLARE_INSN(amoadd_d, MATCH_AMOADD_D, MASK_AMOADD_D)
+DECLARE_INSN(lr_d, MATCH_LR_D, MASK_LR_D)
+DECLARE_INSN(fcvt_w_s, MATCH_FCVT_W_S, MASK_FCVT_W_S)
+DECLARE_INSN(mulhsu, MATCH_MULHSU, MASK_MULHSU)
+DECLARE_INSN(amoadd_w, MATCH_AMOADD_W, MASK_AMOADD_W)
+DECLARE_INSN(fcvt_d_lu, MATCH_FCVT_D_LU, MASK_FCVT_D_LU)
+DECLARE_INSN(lr_w, MATCH_LR_W, MASK_LR_W)
+DECLARE_INSN(fcvt_w_d, MATCH_FCVT_W_D, MASK_FCVT_W_D)
+DECLARE_INSN(slt, MATCH_SLT, MASK_SLT)
+DECLARE_INSN(sllw, MATCH_SLLW, MASK_SLLW)
+DECLARE_INSN(amoor_d, MATCH_AMOOR_D, MASK_AMOOR_D)
+DECLARE_INSN(slti, MATCH_SLTI, MASK_SLTI)
+DECLARE_INSN(remu, MATCH_REMU, MASK_REMU)
+DECLARE_INSN(flw, MATCH_FLW, MASK_FLW)
+DECLARE_INSN(remw, MATCH_REMW, MASK_REMW)
+DECLARE_INSN(sltu, MATCH_SLTU, MASK_SLTU)
+DECLARE_INSN(slli, MATCH_SLLI, MASK_SLLI)
+DECLARE_INSN(amoor_w, MATCH_AMOOR_W, MASK_AMOOR_W)
+DECLARE_INSN(beq, MATCH_BEQ, MASK_BEQ)
+DECLARE_INSN(fld, MATCH_FLD, MASK_FLD)
+DECLARE_INSN(fsub_s, MATCH_FSUB_S, MASK_FSUB_S)
+DECLARE_INSN(and, MATCH_AND, MASK_AND)
+DECLARE_INSN(fmv_d_x, MATCH_FMV_D_X, MASK_FMV_D_X)
+DECLARE_INSN(lbu, MATCH_LBU, MASK_LBU)
+DECLARE_INSN(fsgnj_s, MATCH_FSGNJ_S, MASK_FSGNJ_S)
+DECLARE_INSN(amomax_w, MATCH_AMOMAX_W, MASK_AMOMAX_W)
+DECLARE_INSN(fsgnj_d, MATCH_FSGNJ_D, MASK_FSGNJ_D)
+DECLARE_INSN(mulhu, MATCH_MULHU, MASK_MULHU)
+DECLARE_INSN(fcvt_l_d, MATCH_FCVT_L_D, MASK_FCVT_L_D)
+DECLARE_INSN(fcvt_s_wu, MATCH_FCVT_S_WU, MASK_FCVT_S_WU)
+DECLARE_INSN(fcvt_lu_s, MATCH_FCVT_LU_S, MASK_FCVT_LU_S)
+DECLARE_INSN(fcvt_s_l, MATCH_FCVT_S_L, MASK_FCVT_S_L)
+DECLARE_INSN(auipc, MATCH_AUIPC, MASK_AUIPC)
+DECLARE_INSN(fcvt_lu_d, MATCH_FCVT_LU_D, MASK_FCVT_LU_D)
+DECLARE_INSN(csrrwi, MATCH_CSRRWI, MASK_CSRRWI)
+DECLARE_INSN(sc_d, MATCH_SC_D, MASK_SC_D)
+DECLARE_INSN(fmadd_s, MATCH_FMADD_S, MASK_FMADD_S)
+DECLARE_INSN(fsqrt_s, MATCH_FSQRT_S, MASK_FSQRT_S)
+DECLARE_INSN(amomin_w, MATCH_AMOMIN_W, MASK_AMOMIN_W)
+DECLARE_INSN(fsgnjn_s, MATCH_FSGNJN_S, MASK_FSGNJN_S)
+DECLARE_INSN(amoswap_d, MATCH_AMOSWAP_D, MASK_AMOSWAP_D)
+DECLARE_INSN(fsqrt_d, MATCH_FSQRT_D, MASK_FSQRT_D)
+DECLARE_INSN(fmadd_d, MATCH_FMADD_D, MASK_FMADD_D)
+DECLARE_INSN(divw, MATCH_DIVW, MASK_DIVW)
+DECLARE_INSN(amomin_d, MATCH_AMOMIN_D, MASK_AMOMIN_D)
+DECLARE_INSN(divu, MATCH_DIVU, MASK_DIVU)
+DECLARE_INSN(amoswap_w, MATCH_AMOSWAP_W, MASK_AMOSWAP_W)
+DECLARE_INSN(jalr, MATCH_JALR, MASK_JALR)
+DECLARE_INSN(fsd, MATCH_FSD, MASK_FSD)
+DECLARE_INSN(sw, MATCH_SW, MASK_SW)
+DECLARE_INSN(fmsub_s, MATCH_FMSUB_S, MASK_FMSUB_S)
+DECLARE_INSN(lhu, MATCH_LHU, MASK_LHU)
+DECLARE_INSN(sh, MATCH_SH, MASK_SH)
+DECLARE_INSN(fsw, MATCH_FSW, MASK_FSW)
+DECLARE_INSN(sb, MATCH_SB, MASK_SB)
+DECLARE_INSN(fmsub_d, MATCH_FMSUB_D, MASK_FMSUB_D)
+DECLARE_INSN(sd, MATCH_SD, MASK_SD)
+#endif
+#ifdef DECLARE_CSR
+DECLARE_CSR(fflags, CSR_FFLAGS)
+DECLARE_CSR(frm, CSR_FRM)
+DECLARE_CSR(fcsr, CSR_FCSR)
+DECLARE_CSR(stats, CSR_STATS)
+DECLARE_CSR(sup0, CSR_SUP0)
+DECLARE_CSR(sup1, CSR_SUP1)
+DECLARE_CSR(epc, CSR_EPC)
+DECLARE_CSR(badvaddr, CSR_BADVADDR)
+DECLARE_CSR(ptbr, CSR_PTBR)
+DECLARE_CSR(asid, CSR_ASID)
+DECLARE_CSR(count, CSR_COUNT)
+DECLARE_CSR(compare, CSR_COMPARE)
+DECLARE_CSR(evec, CSR_EVEC)
+DECLARE_CSR(cause, CSR_CAUSE)
+DECLARE_CSR(status, CSR_STATUS)
+DECLARE_CSR(hartid, CSR_HARTID)
+DECLARE_CSR(impl, CSR_IMPL)
+DECLARE_CSR(fatc, CSR_FATC)
+DECLARE_CSR(send_ipi, CSR_SEND_IPI)
+DECLARE_CSR(clear_ipi, CSR_CLEAR_IPI)
+DECLARE_CSR(reset, CSR_RESET)
+DECLARE_CSR(tohost, CSR_TOHOST)
+DECLARE_CSR(fromhost, CSR_FROMHOST)
+DECLARE_CSR(cycle, CSR_CYCLE)
+DECLARE_CSR(time, CSR_TIME)
+DECLARE_CSR(instret, CSR_INSTRET)
+DECLARE_CSR(uarch0, CSR_UARCH0)
+DECLARE_CSR(uarch1, CSR_UARCH1)
+DECLARE_CSR(uarch2, CSR_UARCH2)
+DECLARE_CSR(uarch3, CSR_UARCH3)
+DECLARE_CSR(uarch4, CSR_UARCH4)
+DECLARE_CSR(uarch5, CSR_UARCH5)
+DECLARE_CSR(uarch6, CSR_UARCH6)
+DECLARE_CSR(uarch7, CSR_UARCH7)
+DECLARE_CSR(uarch8, CSR_UARCH8)
+DECLARE_CSR(uarch9, CSR_UARCH9)
+DECLARE_CSR(uarch10, CSR_UARCH10)
+DECLARE_CSR(uarch11, CSR_UARCH11)
+DECLARE_CSR(uarch12, CSR_UARCH12)
+DECLARE_CSR(uarch13, CSR_UARCH13)
+DECLARE_CSR(uarch14, CSR_UARCH14)
+DECLARE_CSR(uarch15, CSR_UARCH15)
+DECLARE_CSR(counth, CSR_COUNTH)
+DECLARE_CSR(cycleh, CSR_CYCLEH)
+DECLARE_CSR(timeh, CSR_TIMEH)
+DECLARE_CSR(instreth, CSR_INSTRETH)
+#endif
+#ifdef DECLARE_CAUSE
+DECLARE_CAUSE("fflags", CAUSE_FFLAGS)
+DECLARE_CAUSE("frm", CAUSE_FRM)
+DECLARE_CAUSE("fcsr", CAUSE_FCSR)
+DECLARE_CAUSE("stats", CAUSE_STATS)
+DECLARE_CAUSE("sup0", CAUSE_SUP0)
+DECLARE_CAUSE("sup1", CAUSE_SUP1)
+DECLARE_CAUSE("epc", CAUSE_EPC)
+DECLARE_CAUSE("badvaddr", CAUSE_BADVADDR)
+DECLARE_CAUSE("ptbr", CAUSE_PTBR)
+DECLARE_CAUSE("asid", CAUSE_ASID)
+DECLARE_CAUSE("count", CAUSE_COUNT)
+DECLARE_CAUSE("compare", CAUSE_COMPARE)
+DECLARE_CAUSE("evec", CAUSE_EVEC)
+DECLARE_CAUSE("cause", CAUSE_CAUSE)
+DECLARE_CAUSE("status", CAUSE_STATUS)
+DECLARE_CAUSE("hartid", CAUSE_HARTID)
+DECLARE_CAUSE("impl", CAUSE_IMPL)
+DECLARE_CAUSE("fatc", CAUSE_FATC)
+DECLARE_CAUSE("send_ipi", CAUSE_SEND_IPI)
+DECLARE_CAUSE("clear_ipi", CAUSE_CLEAR_IPI)
+DECLARE_CAUSE("reset", CAUSE_RESET)
+DECLARE_CAUSE("tohost", CAUSE_TOHOST)
+DECLARE_CAUSE("fromhost", CAUSE_FROMHOST)
+DECLARE_CAUSE("cycle", CAUSE_CYCLE)
+DECLARE_CAUSE("time", CAUSE_TIME)
+DECLARE_CAUSE("instret", CAUSE_INSTRET)
+DECLARE_CAUSE("uarch0", CAUSE_UARCH0)
+DECLARE_CAUSE("uarch1", CAUSE_UARCH1)
+DECLARE_CAUSE("uarch2", CAUSE_UARCH2)
+DECLARE_CAUSE("uarch3", CAUSE_UARCH3)
+DECLARE_CAUSE("uarch4", CAUSE_UARCH4)
+DECLARE_CAUSE("uarch5", CAUSE_UARCH5)
+DECLARE_CAUSE("uarch6", CAUSE_UARCH6)
+DECLARE_CAUSE("uarch7", CAUSE_UARCH7)
+DECLARE_CAUSE("uarch8", CAUSE_UARCH8)
+DECLARE_CAUSE("uarch9", CAUSE_UARCH9)
+DECLARE_CAUSE("uarch10", CAUSE_UARCH10)
+DECLARE_CAUSE("uarch11", CAUSE_UARCH11)
+DECLARE_CAUSE("uarch12", CAUSE_UARCH12)
+DECLARE_CAUSE("uarch13", CAUSE_UARCH13)
+DECLARE_CAUSE("uarch14", CAUSE_UARCH14)
+DECLARE_CAUSE("uarch15", CAUSE_UARCH15)
+DECLARE_CAUSE("counth", CAUSE_COUNTH)
+DECLARE_CAUSE("cycleh", CAUSE_CYCLEH)
+DECLARE_CAUSE("timeh", CAUSE_TIMEH)
+DECLARE_CAUSE("instreth", CAUSE_INSTRETH)
+#endif
diff --git a/src/arch/riscv/include/arch/exception.h b/src/arch/riscv/include/arch/exception.h
new file mode 100644
index 0000000..befab1f
--- /dev/null
+++ b/src/arch/riscv/include/arch/exception.h
@@ -0,0 +1,39 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ARCH_EXCEPTION_H
+#define _ARCH_EXCEPTION_H
+
+#include <stdint.h>
+
+static inline void exception_init(void)
+{
+}
+
+#endif
diff --git a/src/arch/riscv/include/arch/hlt.h b/src/arch/riscv/include/arch/hlt.h
new file mode 100644
index 0000000..12099a9
--- /dev/null
+++ b/src/arch/riscv/include/arch/hlt.h
@@ -0,0 +1,6 @@
+static inline __attribute__((always_inline)) void hlt(void)
+{
+ while(1);
+}
+
+
diff --git a/src/arch/riscv/include/arch/io.h b/src/arch/riscv/include/arch/io.h
new file mode 100644
index 0000000..1890925
--- /dev/null
+++ b/src/arch/riscv/include/arch/io.h
@@ -0,0 +1,35 @@
+#ifndef _ASM_IO_H
+#define _ASM_IO_H
+
+#include <stdint.h>
+
+static inline void outb(uint8_t value, uint16_t port)
+{
+}
+
+static inline void outw(uint16_t value, uint16_t port)
+{
+}
+
+static inline void outl(uint32_t value, uint16_t port)
+{
+}
+
+
+static inline uint8_t inb(uint16_t port)
+{
+ return 0;
+}
+
+
+static inline uint16_t inw(uint16_t port)
+{
+ return 0;
+}
+
+static inline uint32_t inl(uint16_t port)
+{
+ return 0;
+}
+
+#endif
diff --git a/src/arch/riscv/include/arch/stages.h b/src/arch/riscv/include/arch/stages.h
new file mode 100644
index 0000000..2d1192a
--- /dev/null
+++ b/src/arch/riscv/include/arch/stages.h
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 The ChromiumOS Authors
+ *
+ * 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_STAGES_H
+#define __ARCH_STAGES_H
+
+extern void main(void);
+
+void stage_entry(void) __attribute__((section(".text.stage_entry.riscv")));
+void stage_exit(void *);
+void jmp_to_elf_entry(void *entry, unsigned long buffer, unsigned long size);
+
+#endif
diff --git a/src/arch/riscv/include/bootblock_common.h b/src/arch/riscv/include/bootblock_common.h
new file mode 100644
index 0000000..fe2c982
--- /dev/null
+++ b/src/arch/riscv/include/bootblock_common.h
@@ -0,0 +1,16 @@
+#ifdef CONFIG_BOOTBLOCK_CPU_INIT
+#include CONFIG_BOOTBLOCK_CPU_INIT
+#endif
+
+// I'm disappointed that we let this kind of thing creep in.
+// we null out functions with this kind of stuff, AND weak symbols,
+// AND empty cpp function defines. What's next? Ouija boards?
+#if 0
+#ifdef CONFIG_BOOTBLOCK_MAINBOARD_INIT
+#include CONFIG_BOOTBLOCK_MAINBOARD_INIT
+#else
+static void bootblock_mainboard_init(void)
+{
+}
+#endif
+#endif
diff --git a/src/arch/riscv/include/stdint.h b/src/arch/riscv/include/stdint.h
new file mode 100644
index 0000000..a14d053
--- /dev/null
+++ b/src/arch/riscv/include/stdint.h
@@ -0,0 +1,60 @@
+#ifndef RISCV_STDINT_H
+#define RISCV_STDINT_H
+
+/* 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;
+
+typedef unsigned long long uint64_t;
+typedef signed long long int64_t;
+
+/* 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;
+
+typedef unsigned long long uint_least64_t;
+typedef signed long long int_least64_t;
+
+/* 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;
+
+typedef unsigned long long uint_fast64_t;
+typedef signed long long int_fast64_t;
+
+typedef long long int intmax_t;
+typedef unsigned long long uintmax_t;
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
+
+
+/* Types for `void *' pointers. */
+typedef s64 intptr_t;
+typedef u64 uintptr_t;
+
+#endif /* RISCV_STDINT_H */
diff --git a/src/arch/riscv/misc.c b/src/arch/riscv/misc.c
new file mode 100644
index 0000000..6e64028
--- /dev/null
+++ b/src/arch/riscv/misc.c
@@ -0,0 +1,9 @@
+#include <delay.h>
+
+void init_timer(void)
+{
+}
+
+void udelay(unsigned int n)
+{
+}
diff --git a/src/arch/riscv/prologue.inc b/src/arch/riscv/prologue.inc
new file mode 100644
index 0000000..8cf67c0
--- /dev/null
+++ b/src/arch/riscv/prologue.inc
@@ -0,0 +1,22 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2002 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
+ */
+
+.section ".rom.data", "a", @progbits
+.section ".rom.text", "ax", @progbits
+
diff --git a/src/arch/riscv/ramstage.ld b/src/arch/riscv/ramstage.ld
new file mode 100644
index 0000000..5d9ba3e
--- /dev/null
+++ b/src/arch/riscv/ramstage.ld
@@ -0,0 +1,136 @@
+/*
+ * Memory map:
+ *
+ * CONFIG_RAMBASE : text segment
+ * : rodata segment
+ * : data segment
+ * : bss segment
+ * : stack
+ * : heap
+ */
+/*
+ * Copyright 2013 Google Inc.
+ * Bootstrap code for the STPC Consumer
+ * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
+ */
+
+/*
+ * Written by Johan Rydberg, based on work by Daniel Kahlin.
+ * Rewritten by Eric Biederman
+ * 2005.12 yhlu add ramstage cross the vga font buffer handling
+ */
+
+/* We use ELF as output format. So that we can debug the code in some form. */
+INCLUDE ldoptions
+
+ENTRY(stage_entry)
+
+PHDRS
+{
+ to_load PT_LOAD;
+}
+
+SECTIONS
+{
+ . = 0x100000; /*CONFIG_SYS_SDRAM_BASE;*/
+ /* First we place the code and read only data (typically const declared).
+ * This could theoretically be placed in rom.
+ */
+ .text : {
+ _text = .;
+ _start = .;
+ *(.text.stage_entry.riscv);
+ *(.text);
+ *(.text.*);
+ . = ALIGN(16);
+ _etext = .;
+ } : to_load
+
+ .ctors : {
+ . = ALIGN(0x100);
+ __CTOR_LIST__ = .;
+ *(.ctors);
+ LONG(0);
+ __CTOR_END__ = .;
+ }
+
+ .rodata : {
+ _rodata = .;
+ . = ALIGN(4);
+ console_drivers = .;
+ *(.rodata.console_drivers)
+ econsole_drivers = . ;
+ . = ALIGN(4);
+ pci_drivers = . ;
+ *(.rodata.pci_driver)
+ epci_drivers = . ;
+ cpu_drivers = . ;
+ *(.rodata.cpu_driver)
+ ecpu_drivers = . ;
+ _bs_init_begin = .;
+ *(.bs_init)
+ _bs_init_end = .;
+ *(.rodata)
+ *(.rodata.*)
+ /* kevinh/Ispiri - Added an align, because the objcopy tool
+ * incorrectly converts sections that are not long word aligned.
+ */
+ . = ALIGN(4);
+
+ _erodata = .;
+ }
+ /* After the code we place initialized data (typically initialized
+ * global variables). This gets copied into ram by startup code.
+ * __data_start and __data_end shows where in ram this should be placed,
+ * whereas __data_loadstart and __data_loadend shows where in rom to
+ * copy from.
+ */
+ .data : {
+ _data = .;
+ *(.data)
+ _edata = .;
+ }
+
+ /* bss does not contain data, it is just a space that should be zero
+ * initialized on startup. (typically uninitialized global variables)
+ * crt0.S fills between _bss and _ebss with zeroes.
+ */
+ _bss = .;
+ .bss . : {
+ *(.bss)
+ *(.sbss)
+ *(COMMON)
+ }
+ _ebss = .;
+ _end = .;
+
+ /* coreboot really "ends" here. Only heap and stack are placed after
+ * this line.
+ */
+
+ _heap = .;
+ .heap . : {
+ /* Reserve CONFIG_HEAP_SIZE bytes for the heap */
+ . = CONFIG_HEAP_SIZE ;
+ . = ALIGN(4);
+ }
+ _eheap = .;
+
+ _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/riscv/rom_media.c b/src/arch/riscv/rom_media.c
new file mode 100644
index 0000000..712b7c4
--- /dev/null
+++ b/src/arch/riscv/rom_media.c
@@ -0,0 +1,100 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 The Chromium OS Authors. All rights reserved.
+ *
+ * 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 <cbfs.h>
+#include <string.h>
+
+#ifdef LIBPAYLOAD
+# define printk(x...)
+# define init_default_cbfs_media libpayload_init_default_cbfs_media
+ extern int libpayload_init_default_cbfs_media(struct cbfs_media *media);
+#else
+# include <console/console.h>
+#endif
+
+// Implementation of memory-mapped ROM media source on X86.
+
+static int rom_media_open(struct cbfs_media *media) {
+ return 0;
+}
+
+static void *rom_media_map(struct cbfs_media *media, size_t offset, size_t count) {
+ void *ptr;
+ printk(BIOS_INFO, "%s: media %p, offset %lx, size %ld.\n", __func__, media, offset, count);
+
+ ptr = (void*)offset;
+ return ptr;
+}
+
+static void *rom_media_unmap(struct cbfs_media *media, const void *address) {
+ return NULL;
+}
+
+static size_t rom_media_read(struct cbfs_media *media, void *dest, size_t offset,
+ size_t count) {
+ void *ptr = rom_media_map(media, offset, count);
+ memcpy(dest, ptr, count);
+ rom_media_unmap(media, ptr);
+ return count;
+}
+
+static int rom_media_close(struct cbfs_media *media) {
+ return 0;
+}
+
+static int init_rom_media_cbfs(struct cbfs_media *media) {
+ //extern unsigned long _cbfs_master_header;
+ // On X86, we always keep a reference of pointer to CBFS header in
+ // 0xfffffffc, and the pointer is still a memory-mapped address.
+ // Since the CBFS core always use ROM offset, we need to figure out
+ // header->romsize even before media is initialized.
+ struct cbfs_header *header = (struct cbfs_header*) CONFIG_CBFS_HEADER_ROM_OFFSET; //&_cbfs_master_header;
+ if (CBFS_HEADER_MAGIC != ntohl(header->magic)) {
+ printk(BIOS_ERR, "Invalid CBFS master header at %p\n", header);
+ printk(BIOS_ERR, "Expected %08lx and got %08lx\n", (unsigned long) CBFS_HEADER_MAGIC, (unsigned long) ntohl(header->magic));
+ return -1;
+ } else {
+ uint32_t romsize = ntohl(header->romsize);
+ media->context = (void*)(uintptr_t)romsize;
+#if defined(CONFIG_ROM_SIZE)
+ if (CONFIG_ROM_SIZE != romsize)
+ printk(BIOS_INFO, "Warning: rom size unmatch (%d/%d)\n",
+ CONFIG_ROM_SIZE, romsize);
+#endif
+ }
+ media->open = rom_media_open;
+ media->close = rom_media_close;
+ media->map = rom_media_map;
+ media->unmap = rom_media_unmap;
+ media->read = rom_media_read;
+ return 0;
+}
+
+int init_default_cbfs_media(struct cbfs_media *media) {
+ return init_rom_media_cbfs(media);
+}
+// bug in coreboot. Fix me.
+// even if you have no use for lzma cbfs demands it.
+// and the ulzma code is terrible -- full of bad 32/64 bad things.
+unsigned long ulzma(unsigned char *src, unsigned char *dst);
+unsigned long ulzma(unsigned char *src, unsigned char *dst)
+{
+ return 0;
+}
diff --git a/src/arch/riscv/romstage.ld b/src/arch/riscv/romstage.ld
new file mode 100644
index 0000000..839c285
--- /dev/null
+++ b/src/arch/riscv/romstage.ld
@@ -0,0 +1,89 @@
+/*
+ * Memory map:
+ *
+ * CONFIG_ROMSTAGE_BASE : text segment
+ * : rodata segment
+ * : data segment
+ * : bss segment
+ * : stack
+ * : heap
+ */
+/*
+ * Bootstrap code for the STPC Consumer
+ * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
+ */
+
+/*
+ * Written by Johan Rydberg, based on work by Daniel Kahlin.
+ * Rewritten by Eric Biederman
+ * 2005.12 yhlu add ramstage cross the vga font buffer handling
+ */
+
+/* We use ELF as output format. So that we can debug the code in some form. */
+/*
+ INCLUDE ldoptions
+ */
+
+/* We use ELF as output format. So that we can debug the code in some form. */
+OUTPUT_FORMAT("elf64-littleriscv", "elf64-littleriscv", "elf64-littleriscv")
+OUTPUT_ARCH(riscv)
+INCLUDE ldoptions
+
+PHDRS
+{
+ to_load PT_LOAD;
+}
+
+ENTRY(stage_entry)
+
+SECTIONS
+{
+ . = CONFIG_ROMSTAGE_BASE;
+
+ .romtext . : {
+ _start = .;
+ *(.text.stage_entry.riscv);
+ *(.text.startup);
+ *(.text);
+ *(.text.*);
+ } : to_load
+
+ .romdata . : {
+ *(.rodata);
+ *(.rodata.*);
+ *(.machine_param);
+ *(.data);
+ *(.data.*);
+ . = ALIGN(8);
+ _erom = .;
+ }
+
+ __image_copy_end = .;
+
+ /* bss does not contain data, it is just a space that should be zero
+ * initialized on startup. (typically uninitialized global variables)
+ * crt0.S fills between _bss and _ebss with zeroes.
+ */
+ .bss . : {
+ . = ALIGN(8);
+ _bss = .;
+ *(.bss)
+ *(.bss.*)
+ *(.sbss)
+ *(.sbss.*)
+ _ebss = .;
+ }
+
+ _end = .;
+
+ /*preram_cbmem_console = CONFIG_CBMEM_CONSOLE_PRERAM_BASE;*/
+
+ /* Discard the sections we don't need/want */
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ *(.comment.*)
+ *(.note.*)
+ *(.eh_frame);
+ }
+}
diff --git a/src/arch/riscv/stages.c b/src/arch/riscv/stages.c
new file mode 100644
index 0000000..570ba9e
--- /dev/null
+++ b/src/arch/riscv/stages.c
@@ -0,0 +1,52 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 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
+ */
+
+/*
+ * This file contains entry/exit functions for each stage during coreboot
+ * execution (bootblock entry and ramstage exit will depend on external
+ * loading).
+ *
+ * Entry points must be placed at the location the previous stage jumps
+ * to (the lowest address in the stage image). This is done by giving
+ * stage_entry() its own section in .text and placing it first in the
+ * linker script.
+ */
+
+#include <arch/stages.h>
+
+void stage_entry(void)
+{
+ main();
+}
+
+/* we had marked 'doit' as 'noreturn'.
+ * There is no apparent harm in leaving it as something we can return from, and in the one
+ * case where we call a payload, the payload is allowed to return.
+ * Hence, leave it as something we can return from.
+ */
+void stage_exit(void *addr)
+{
+ void (*doit)(void) = addr;
+ /*
+ * Most stages load code so we need to sync caches here. Should maybe
+ * go into cbfs_load_stage() instead...
+ */
+ //cache_sync_instructions();
+ doit();
+}
diff --git a/src/arch/riscv/tables.c b/src/arch/riscv/tables.c
new file mode 100644
index 0000000..0265949
--- /dev/null
+++ b/src/arch/riscv/tables.c
@@ -0,0 +1,96 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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)
+
+#if ! IS_ENABLED(CONFIG_DYNAMIC_CBMEM)
+/*
+ * TODO: "High" tables are a convention used on x86. Maybe we can
+ * clean up that naming at some point.
+ */
+uint64_t high_tables_base = 0;
+uint64_t high_tables_size;
+#endif
+
+void cbmem_arch_init(void)
+{
+}
+
+// WTF. this does not agre with the prototype!
+static struct lb_memory *wtf_write_tables(void)
+{
+ unsigned long table_pointer, new_table_pointer;
+
+#if ! IS_ENABLED(CONFIG_DYNAMIC_CBMEM)
+ if (!high_tables_base) {
+ printk(BIOS_ERR, "ERROR: high_tables_base is not set.\n");
+ }
+
+ printk(BIOS_DEBUG, "high_tables_base: %llx.\n", high_tables_base);
+#endif
+
+ 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();
+ return NULL;
+}
+void write_tables(void)
+{
+ wtf_write_tables();
+}
+
+void cbmem_fail_resume(void)
+{
+}
+void get_cbmem_table(uint64_t *base, uint64_t *size)
+{
+}
diff --git a/src/console/Kconfig b/src/console/Kconfig
index 619af56..0d32011 100644
--- a/src/console/Kconfig
+++ b/src/console/Kconfig
@@ -2,7 +2,7 @@ menu "Console"
config BOOTBLOCK_CONSOLE
bool "Enable early (bootblock) console output."
- depends on ARCH_ARM
+ depends on ARCH_ARM || ARCH_RISCV
default n
help
Use console during the bootblock if supported
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 55e0d6d..ac4a5f2 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -55,7 +55,8 @@ ramstage-y += delay.c
ramstage-y += fallback_boot.c
ramstage-y += compute_ip_checksum.c
ramstage-y += cbfs.c cbfs_core.c
-ramstage-y += lzma.c lzmadecode.c
+ramstage-$(CONFIG_COMPRESSED_PAYLOAD_LZMA) += lzma.c
+ramstage-$(CONFIG_COMPRESSED_PAYLOAD_LZMA) += lzmadecode.c
ramstage-y += stack.c
ramstage-y += clog2.c
romstage-y += clog2.c
diff --git a/src/mainboard/emulation/Kconfig b/src/mainboard/emulation/Kconfig
index 3fbc415..a1ee02d 100644
--- a/src/mainboard/emulation/Kconfig
+++ b/src/mainboard/emulation/Kconfig
@@ -12,6 +12,9 @@ config BOARD_EMULATION_QEMU_X86_Q35
config BOARD_EMULATION_QEMU_ARMV7
bool "QEMU armv7 (vexpress-a9)"
+config BOARD_EMULATION_QEMU_UCB_RISCV
+ bool "QEMU ucb riscv"
+
endchoice
config BOARD_EMULATION_QEMU_X86
@@ -22,6 +25,7 @@ config BOARD_EMULATION_QEMU_X86
source "src/mainboard/emulation/qemu-i440fx/Kconfig"
source "src/mainboard/emulation/qemu-q35/Kconfig"
source "src/mainboard/emulation/qemu-armv7/Kconfig"
+source "src/mainboard/emulation/qemu-riscv/Kconfig"
config MAINBOARD_VENDOR
string
diff --git a/src/mainboard/emulation/qemu-riscv/Kconfig b/src/mainboard/emulation/qemu-riscv/Kconfig
new file mode 100644
index 0000000..d7d5cc9
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/Kconfig
@@ -0,0 +1,97 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 Google Inc.
+##
+## This software is licensed under the terms of the GNU General Public
+## License version 2, as published by the Free Software Foundation, and
+## may be copied, distributed, and modified under those terms.
+##
+## 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.
+
+# To execute, do:
+# qemu-system-arm -M vexpress-a9 -m 1024M -nographic -kernel build/coreboot.rom
+
+if BOARD_EMULATION_QEMU_UCB_RISCV
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+ def_bool y
+ select SOC_UCB_RISCV
+ select BOARD_ROMSIZE_KB_4096
+ select ARCH_BOOTBLOCK_RISCV
+ select HAVE_UART_SPECIAL
+
+config MAINBOARD_DIR
+ string
+ default emulation/qemu-riscv
+
+config MAINBOARD_PART_NUMBER
+ string
+ default "QEMU RISCV"
+
+config MAX_CPUS
+ int
+ default 1
+
+config MAINBOARD_VENDOR
+ string
+ default "UCB"
+
+config DRAM_SIZE_MB
+ int
+ default 32768
+
+# Memory map for qemu riscv
+#
+# 0x0000_0000: jump instruction (by qemu)
+# 0x0002_0000: bootblock (entry of kernel / firmware)
+# 0x0003_0000: romstage, assume up to 128KB in size.
+# 0x0007_ff00: stack pointer
+# 0x0010_0000: CBFS header
+# 0x0011_0000: CBFS data
+# 0x0100_0000: reserved for ramstage
+
+config BOOTBLOCK_BASE
+ hex
+ default 0x00000000
+
+config ROMSTAGE_BASE
+ hex
+ default 0x00020000
+
+config RAMSTAGE_BASE
+ hex
+ default 0x100000
+
+config BOOTBLOCK_ROM_OFFSET
+ hex
+ default 0x0
+
+config CBFS_HEADER_ROM_OFFSET
+ hex
+ default 0x10000
+
+config CBFS_ROM_OFFSET
+ hex
+ default 0x10040
+
+config RAMTOP
+ hex
+ default 0x1000000
+
+config STACK_TOP
+ hex
+ default 0x0007ff00
+
+config STACK_BOTTOM
+ hex
+ default 0x00040000
+
+config STACK_SIZE
+ hex
+ default 0x0003ff00
+
+endif # BOARD_EMULATION_QEMU_UCB_RISCV
diff --git a/src/mainboard/emulation/qemu-riscv/Makefile.inc b/src/mainboard/emulation/qemu-riscv/Makefile.inc
new file mode 100644
index 0000000..bc01d2f
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/Makefile.inc
@@ -0,0 +1,19 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2013 Google Inc.
+##
+## This software is licensed under the terms of the GNU General Public
+## License version 2, as published by the Free Software Foundation, and
+## may be copied, distributed, and modified under those terms.
+##
+## 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.
+
+bootblock-y += bootblock.c
+bootblock-y += uart.c
+romstage-y += romstage.c
+romstage-y += uart.c
+ramstage-y += uart.c
diff --git a/src/mainboard/emulation/qemu-riscv/board_info.txt b/src/mainboard/emulation/qemu-riscv/board_info.txt
new file mode 100644
index 0000000..811e8e0
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/board_info.txt
@@ -0,0 +1,2 @@
+Board name: QEMU RISCV
+Category: emulation
diff --git a/src/mainboard/emulation/qemu-riscv/bootblock.c b/src/mainboard/emulation/qemu-riscv/bootblock.c
new file mode 100644
index 0000000..831b193
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/bootblock.c
@@ -0,0 +1,45 @@
+/*
+ * 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
+ */
+
+#include <arch/exception.h>
+#include <arch/hlt.h>
+#include <bootblock_common.h>
+#include <cbfs.h>
+#include <console/console.h>
+#include <arch/stages.h>
+
+// the qemu part of all this is very, very non-hardware like.
+// so it gets its own bootblock.
+void main(void)
+{
+ void *entry;
+
+ if (IS_ENABLED(CONFIG_BOOTBLOCK_CONSOLE)) {
+ console_init();
+ exception_init();
+ }
+
+ entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, CONFIG_CBFS_PREFIX"/romstage");
+ if (! entry) {
+ printk(BIOS_EMERG, "AAAAAAAAAAAAAA no romstage!\n");
+ while (1);
+ }
+
+ stage_exit(entry);
+}
diff --git a/src/mainboard/emulation/qemu-riscv/devicetree.cb b/src/mainboard/emulation/qemu-riscv/devicetree.cb
new file mode 100644
index 0000000..e3ce088
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/devicetree.cb
@@ -0,0 +1,20 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 Google, Inc.
+##
+## This software is licensed under the terms of the GNU General Public
+## License version 2, as published by the Free Software Foundation, and
+## may be copied, distributed, and modified under those terms.
+##
+## 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.
+
+chip soc/ucb/riscv
+ device cpu_cluster 0 on end
+ chip drivers/generic/generic # I2C0 controller
+ device i2c 6 on end # Fake component for testing
+ end
+end
diff --git a/src/mainboard/emulation/qemu-riscv/mainboard.c b/src/mainboard/emulation/qemu-riscv/mainboard.c
new file mode 100644
index 0000000..111e9b1
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/mainboard.c
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <cbmem.h>
+
+static void mainboard_enable(device_t dev)
+{
+
+ if (!dev) {
+ printk(BIOS_EMERG, "No dev0; die\n");
+ while (1);
+ }
+
+ ram_resource(dev, 0, 2048, 32768);
+ cbmem_recovery(0);
+}
+
+struct chip_operations mainboard_ops = {
+ .enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/emulation/qemu-riscv/romstage.c b/src/mainboard/emulation/qemu-riscv/romstage.c
new file mode 100644
index 0000000..f4b44f6
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/romstage.c
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 <cbfs.h>
+#include <console/console.h>
+#include <arch/stages.h>
+
+void main(void)
+{
+ void *entry;
+
+ console_init();
+
+ entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, CONFIG_CBFS_PREFIX"/ramstage");
+
+ stage_exit(entry);
+}
diff --git a/src/mainboard/emulation/qemu-riscv/uart.c b/src/mainboard/emulation/qemu-riscv/uart.c
new file mode 100644
index 0000000..1f22c36
--- /dev/null
+++ b/src/mainboard/emulation/qemu-riscv/uart.c
@@ -0,0 +1,60 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 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
+ */
+
+#include <types.h>
+#include <console/uart.h>
+#include <arch/io.h>
+#include <boot/coreboot_tables.h>
+#include "frontend.h"
+
+static uint8_t *buf = (void *)0x3f8;
+uintptr_t uart_platform_base(int idx)
+{
+ return 1;
+}
+
+void uart_init(int idx)
+{
+}
+
+unsigned char uart_rx_byte(int idx)
+{
+ return *buf;
+}
+
+void uart_tx_byte(int idx, unsigned char data)
+{
+ *buf = data;
+}
+
+void uart_tx_flush(int idx)
+{
+}
+
+#ifndef __PRE_RAM__
+void uart_fill_lb(void *data)
+{
+ struct lb_serial serial;
+ serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
+ serial.baseaddr = 0x3f8;
+ serial.baud = 115200;
+ lb_add_serial(&serial, data);
+ lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
+}
+#endif
diff --git a/src/soc/Kconfig b/src/soc/Kconfig
index 53d7b90..0412919 100644
--- a/src/soc/Kconfig
+++ b/src/soc/Kconfig
@@ -2,3 +2,4 @@ source src/soc/intel/Kconfig
source src/soc/nvidia/Kconfig
source src/soc/qualcomm/Kconfig
source src/soc/samsung/Kconfig
+source src/soc/ucb/Kconfig
diff --git a/src/soc/Makefile.inc b/src/soc/Makefile.inc
index 6939346..ab3e166 100644
--- a/src/soc/Makefile.inc
+++ b/src/soc/Makefile.inc
@@ -5,3 +5,4 @@ subdirs-y += intel
subdirs-y += nvidia
subdirs-y += qualcomm
subdirs-y += samsung
+subdirs-y += ucb
diff --git a/src/soc/ucb/Kconfig b/src/soc/ucb/Kconfig
new file mode 100644
index 0000000..7af50cb
--- /dev/null
+++ b/src/soc/ucb/Kconfig
@@ -0,0 +1 @@
+source src/soc/ucb/riscv/Kconfig
diff --git a/src/soc/ucb/Makefile.inc b/src/soc/ucb/Makefile.inc
new file mode 100644
index 0000000..35bc728
--- /dev/null
+++ b/src/soc/ucb/Makefile.inc
@@ -0,0 +1 @@
+subdirs-$(CONFIG_CPU_UCB_RISCV) += riscv
diff --git a/src/soc/ucb/riscv/Kconfig b/src/soc/ucb/riscv/Kconfig
new file mode 100644
index 0000000..d1e4ba7
--- /dev/null
+++ b/src/soc/ucb/riscv/Kconfig
@@ -0,0 +1,11 @@
+config SOC_UCB_RISCV
+ select ARCH_RISCV
+ select ARCH_BOOTBLOCK_RISCV
+ select ARCH_ROMSTAGE_RISCV
+ select ARCH_RAMSTAGE_RISCV
+ bool
+ default n
+
+if SOC_UCB_RISCV
+
+endif
diff --git a/toolchain.inc b/toolchain.inc
index 4d2fe0b..e6f530a 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -57,6 +57,7 @@ ARCHDIR-i386 := x86
ARCHDIR-x86_32 := x86
ARCHDIR-arm := arm
ARCHDIR-arm64 := arm64
+ARCHDIR-riscv := riscv
CFLAGS_arm := -mno-unaligned-access -ffunction-sections -fdata-sections
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