diff options
Diffstat (limited to 'arch/x86/cpu/coreboot')
| -rw-r--r-- | arch/x86/cpu/coreboot/Makefile | 58 | ||||
| -rw-r--r-- | arch/x86/cpu/coreboot/asm-offsets.c | 25 | ||||
| -rw-r--r-- | arch/x86/cpu/coreboot/coreboot_car.S | 29 | ||||
| -rw-r--r-- | arch/x86/cpu/coreboot/ipchecksum.c | 54 | ||||
| -rw-r--r-- | arch/x86/cpu/coreboot/sdram.c | 75 | ||||
| -rw-r--r-- | arch/x86/cpu/coreboot/sysinfo.c | 39 | ||||
| -rw-r--r-- | arch/x86/cpu/coreboot/tables.c | 183 |
7 files changed, 463 insertions, 0 deletions
diff --git a/arch/x86/cpu/coreboot/Makefile b/arch/x86/cpu/coreboot/Makefile new file mode 100644 index 0000000000..13f5f8a2f0 --- /dev/null +++ b/arch/x86/cpu/coreboot/Makefile @@ -0,0 +1,58 @@ +# +# Copyright (c) 2011 The Chromium OS Authors. +# +# (C) Copyright 2008 +# Graeme Russ, graeme.russ@gmail.com. +# +# (C) Copyright 2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# (C) Copyright 2002 +# Daniel Engström, Omicron Ceti AB, daniel@omicron.se. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB := $(obj)lib$(SOC).o + +COBJS-$(CONFIG_SYS_COREBOOT) += tables.o +COBJS-$(CONFIG_SYS_COREBOOT) += ipchecksum.o +COBJS-$(CONFIG_SYS_COREBOOT) += sdram.o +COBJS-$(CONFIG_SYS_COREBOOT) += sysinfo.o + +SOBJS-$(CONFIG_SYS_COREBOOT) += coreboot_car.o + +SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) + +all: $(obj).depend $(LIB) + +$(LIB): $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/x86/cpu/coreboot/asm-offsets.c b/arch/x86/cpu/coreboot/asm-offsets.c new file mode 100644 index 0000000000..97937da8e2 --- /dev/null +++ b/arch/x86/cpu/coreboot/asm-offsets.c @@ -0,0 +1,25 @@ +/* + * Adapted from Linux v2.6.36 kernel: arch/powerpc/kernel/asm-offsets.c + * + * This program is used to generate definitions needed by + * assembly language modules. + * + * We use the technique used in the OSF Mach kernel code: + * generate asm statements containing #defines, + * compile this file to assembler, and then extract the + * #defines from the assembly-language output. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <common.h> +#include <linux/kbuild.h> + +int main(void) +{ + DEFINE(GENERATED_GD_RELOC_OFF, offsetof(gd_t, reloc_off)); + return 0; +} diff --git a/arch/x86/cpu/coreboot/coreboot_car.S b/arch/x86/cpu/coreboot/coreboot_car.S new file mode 100644 index 0000000000..3cc25755fd --- /dev/null +++ b/arch/x86/cpu/coreboot/coreboot_car.S @@ -0,0 +1,29 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * (C) Copyright 2010-2011 + * Graeme Russ, <graeme.russ@gmail.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +.section .text + +.globl car_init +car_init: + jmp car_init_ret diff --git a/arch/x86/cpu/coreboot/ipchecksum.c b/arch/x86/cpu/coreboot/ipchecksum.c new file mode 100644 index 0000000000..57733d8f0d --- /dev/null +++ b/arch/x86/cpu/coreboot/ipchecksum.c @@ -0,0 +1,54 @@ +/* + * This file is part of the libpayload project. + * + * It has originally been taken from the FreeBSD project. + * + * Copyright (c) 2001 Charles Mott <cm@linktel.net> + * Copyright (c) 2008 coresystems GmbH + * All rights reserved. + * + * 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. + * + * 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. + */ + +#include <compiler.h> +#include <asm/arch-coreboot/ipchecksum.h> + +unsigned short ipchksum(const void *vptr, unsigned long nbytes) +{ + int sum, oddbyte; + const unsigned short *ptr = vptr; + + sum = 0; + while (nbytes > 1) { + sum += *ptr++; + nbytes -= 2; + } + if (nbytes == 1) { + oddbyte = 0; + ((u8 *)&oddbyte)[0] = *(u8 *) ptr; + ((u8 *)&oddbyte)[1] = 0; + sum += oddbyte; + } + sum = (sum >> 16) + (sum & 0xffff); + sum += (sum >> 16); + return ~sum; +} diff --git a/arch/x86/cpu/coreboot/sdram.c b/arch/x86/cpu/coreboot/sdram.c new file mode 100644 index 0000000000..f8fdac6319 --- /dev/null +++ b/arch/x86/cpu/coreboot/sdram.c @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * (C) Copyright 2010,2011 + * Graeme Russ, <graeme.russ@gmail.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but without any warranty; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <malloc.h> +#include <asm/e820.h> +#include <asm/u-boot-x86.h> +#include <asm/global_data.h> +#include <asm/arch-coreboot/sysinfo.h> +#include <asm/arch-coreboot/tables.h> + +DECLARE_GLOBAL_DATA_PTR; + +unsigned install_e820_map(unsigned max_entries, struct e820entry *entries) +{ + int i; + + unsigned num_entries = min(lib_sysinfo.n_memranges, max_entries); + if (num_entries < lib_sysinfo.n_memranges) { + printf("Warning: Limiting e820 map to %d entries.\n", + num_entries); + } + for (i = 0; i < num_entries; i++) { + struct memrange *memrange = &lib_sysinfo.memrange[i]; + + entries[i].addr = memrange->base; + entries[i].size = memrange->size; + entries[i].type = memrange->type; + } + return num_entries; +} + +int dram_init_f(void) +{ + int i; + phys_size_t ram_size = 0; + + for (i = 0; i < lib_sysinfo.n_memranges; i++) { + struct memrange *memrange = &lib_sysinfo.memrange[i]; + unsigned long long end = memrange->base + memrange->size; + + if (memrange->type == CB_MEM_RAM && end > ram_size) + ram_size = end; + } + gd->ram_size = ram_size; + if (ram_size == 0) + return -1; + return 0; +} + +int dram_init(void) +{ + return 0; +} diff --git a/arch/x86/cpu/coreboot/sysinfo.c b/arch/x86/cpu/coreboot/sysinfo.c new file mode 100644 index 0000000000..9b3e660dde --- /dev/null +++ b/arch/x86/cpu/coreboot/sysinfo.c @@ -0,0 +1,39 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * Copyright (C) 2009 coresystems GmbH + * + * 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. + */ + +#include <asm/arch-coreboot/sysinfo.h> + +/* + * This needs to be in the .data section so that it's copied over during + * relocation. By default it's put in the .bss section which is simply filled + * with zeroes when transitioning from "ROM", which is really RAM, to other + * RAM. + */ +struct sysinfo_t lib_sysinfo __attribute__((section(".data"))); diff --git a/arch/x86/cpu/coreboot/tables.c b/arch/x86/cpu/coreboot/tables.c new file mode 100644 index 0000000000..0e3451bb22 --- /dev/null +++ b/arch/x86/cpu/coreboot/tables.c @@ -0,0 +1,183 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * Copyright (C) 2009 coresystems GmbH + * + * 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. + */ + +#include <asm/arch-coreboot/ipchecksum.h> +#include <asm/arch-coreboot/sysinfo.h> +#include <asm/arch-coreboot/tables.h> + +/* + * Some of this is x86 specific, and the rest of it is generic. Right now, + * since we only support x86, we'll avoid trying to make lots of infrastructure + * we don't need. If in the future, we want to use coreboot on some other + * architecture, then take out the generic parsing code and move it elsewhere. + */ + +/* === Parsing code === */ +/* This is the generic parsing code. */ + +static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info) +{ + struct cb_memory *mem = (struct cb_memory *)ptr; + int count = MEM_RANGE_COUNT(mem); + int i; + + if (count > SYSINFO_MAX_MEM_RANGES) + count = SYSINFO_MAX_MEM_RANGES; + + info->n_memranges = 0; + + for (i = 0; i < count; i++) { + struct cb_memory_range *range = + (struct cb_memory_range *)MEM_RANGE_PTR(mem, i); + + info->memrange[info->n_memranges].base = + UNPACK_CB64(range->start); + + info->memrange[info->n_memranges].size = + UNPACK_CB64(range->size); + + info->memrange[info->n_memranges].type = range->type; + + info->n_memranges++; + } +} + +static void cb_parse_serial(unsigned char *ptr, struct sysinfo_t *info) +{ + struct cb_serial *ser = (struct cb_serial *)ptr; + if (ser->type != CB_SERIAL_TYPE_IO_MAPPED) + return; + info->ser_ioport = ser->baseaddr; +} + +static void cb_parse_optiontable(unsigned char *ptr, struct sysinfo_t *info) +{ + info->option_table = (struct cb_cmos_option_table *)ptr; +} + +static void cb_parse_checksum(unsigned char *ptr, struct sysinfo_t *info) +{ + struct cb_cmos_checksum *cmos_cksum = (struct cb_cmos_checksum *)ptr; + info->cmos_range_start = cmos_cksum->range_start; + info->cmos_range_end = cmos_cksum->range_end; + info->cmos_checksum_location = cmos_cksum->location; +} + +static void cb_parse_framebuffer(unsigned char *ptr, struct sysinfo_t *info) +{ + info->framebuffer = (struct cb_framebuffer *)ptr; +} + +static int cb_parse_header(void *addr, int len, struct sysinfo_t *info) +{ + struct cb_header *header; + unsigned char *ptr = (unsigned char *)addr; + int i; + + for (i = 0; i < len; i += 16, ptr += 16) { + header = (struct cb_header *)ptr; + if (!strncmp((const char *)header->signature, "LBIO", 4)) + break; + } + + /* We walked the entire space and didn't find anything. */ + if (i >= len) + return -1; + + if (!header->table_bytes) + return 0; + + /* Make sure the checksums match. */ + if (ipchksum((u16 *) header, sizeof(*header)) != 0) + return -1; + + if (ipchksum((u16 *) (ptr + sizeof(*header)), + header->table_bytes) != header->table_checksum) + return -1; + + /* Now, walk the tables. */ + ptr += header->header_bytes; + + for (i = 0; i < header->table_entries; i++) { + struct cb_record *rec = (struct cb_record *)ptr; + + /* We only care about a few tags here (maybe more later). */ + switch (rec->tag) { + case CB_TAG_FORWARD: + return cb_parse_header( + (void *)(unsigned long) + ((struct cb_forward *)rec)->forward, + len, info); + continue; + case CB_TAG_MEMORY: + cb_parse_memory(ptr, info); + break; + case CB_TAG_SERIAL: + cb_parse_serial(ptr, info); + break; + case CB_TAG_CMOS_OPTION_TABLE: + cb_parse_optiontable(ptr, info); + break; + case CB_TAG_OPTION_CHECKSUM: + cb_parse_checksum(ptr, info); + break; + /* + * FIXME we should warn on serial if coreboot set up a + * framebuffer buf the payload does not know about it. + */ + case CB_TAG_FRAMEBUFFER: + cb_parse_framebuffer(ptr, info); + break; + } + + ptr += rec->size; + } + + return 1; +} + +/* == Architecture specific == */ +/* This is the x86 specific stuff. */ + +/* Assume no translation or that memory is identity mapped. */ +static void *phys_to_virt(unsigned long virt) +{ + return (void *)(uintptr_t)virt; +} + +int get_coreboot_info(struct sysinfo_t *info) +{ + int ret = cb_parse_header(phys_to_virt(0x00000000), 0x1000, info); + + if (ret != 1) + ret = cb_parse_header(phys_to_virt(0x000f0000), 0x1000, info); + + return (ret == 1) ? 0 : -1; +} |
