Ronald G. Minnich (rminnich@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7584
-gerrit
commit 1736c9352a0aaad414cb15dcf564b671ac4bf3b4 Author: Ronald G. Minnich rminnich@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 it needs a lot of work. A cleanup is in progress.
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@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/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/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 + src/soc/ucb/riscv/Makefile.inc | 3 + src/soc/ucb/riscv/cbmem.c | 24 + toolchain.inc | 1 + 45 files changed, 2383 insertions(+), 2 deletions(-)
diff --git a/Makefile.inc b/Makefile.inc index a925d67..59d11bd 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/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/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..40192c9 --- /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 (uintptr_t) buf; +} + +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/src/soc/ucb/riscv/Makefile.inc b/src/soc/ucb/riscv/Makefile.inc new file mode 100644 index 0000000..c25a2fc --- /dev/null +++ b/src/soc/ucb/riscv/Makefile.inc @@ -0,0 +1,3 @@ +romstage-y += cbmem.c + +ramstage-y += cbmem.c diff --git a/src/soc/ucb/riscv/cbmem.c b/src/soc/ucb/riscv/cbmem.c new file mode 100644 index 0000000..9c3ee98 --- /dev/null +++ b/src/soc/ucb/riscv/cbmem.c @@ -0,0 +1,24 @@ +/* + * 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> + +void *cbmem_top(void) +{ + // TODO: find out how RISCV stores this. + return (void *)0x1fff000; +} 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