From ef5a5b004997a0759d6f5f3206a419f90d5ffac5 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Tue, 29 Nov 2011 18:05:07 +0000 Subject: x86: Initial commit for running as a coreboot payload Add a target for running u-boot as a coreboot payload in boards.cfg, a board, CPU and a config. This is a skeleton implementation which always reports the size of memory as 64 MB. Signed-off-by: Gabe Black --- arch/x86/cpu/coreboot/Makefile | 55 ++++++++++++++++++++++++++++++++++++ arch/x86/cpu/coreboot/asm-offsets.c | 25 ++++++++++++++++ arch/x86/cpu/coreboot/coreboot_car.S | 29 +++++++++++++++++++ arch/x86/cpu/coreboot/sdram.c | 39 +++++++++++++++++++++++++ 4 files changed, 148 insertions(+) create mode 100644 arch/x86/cpu/coreboot/Makefile create mode 100644 arch/x86/cpu/coreboot/asm-offsets.c create mode 100644 arch/x86/cpu/coreboot/coreboot_car.S create mode 100644 arch/x86/cpu/coreboot/sdram.c (limited to 'arch/x86') diff --git a/arch/x86/cpu/coreboot/Makefile b/arch/x86/cpu/coreboot/Makefile new file mode 100644 index 0000000..0444399 --- /dev/null +++ b/arch/x86/cpu/coreboot/Makefile @@ -0,0 +1,55 @@ +# +# 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-$(CONFIG_SYS_COREBOOT) += sdram.o + +SOBJS-$(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 0000000..97937da --- /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 +#include + +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 0000000..3cc2575 --- /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, + * + * 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/sdram.c b/arch/x86/cpu/coreboot/sdram.c new file mode 100644 index 0000000..b56085a --- /dev/null +++ b/arch/x86/cpu/coreboot/sdram.c @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * (C) Copyright 2010,2011 + * Graeme Russ, + * + * 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 +#include + +DECLARE_GLOBAL_DATA_PTR; + +int dram_init_f(void) +{ + gd->ram_size = 64*1024*1024; + return 0; +} + +int dram_init(void) +{ + return 0; +} -- cgit v1.1 From 63f559cd12e64825df78c1774b707ac1782110c0 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 5 Dec 2011 12:09:22 +0000 Subject: x86: Import code from coreboot's libpayload to parse the coreboot table This change also forces the lib_sysinfo structure to be in the .data section. Otherwise it ends up in the .bss section. U-boot assumes that it doesn't need to copy it over during relocation, and instead fills that whole section with zeroes. If we really were booting from ROM that would be appropriate, but we need some information from the coreboot tables (memory size) before then and have to fill that structure before relocation. We skirt u-boot's assumption by putting this in .data where it assumes there is still read only but non-zero data. Signed-off-by: Gabe Black --- arch/x86/cpu/coreboot/Makefile | 3 + arch/x86/cpu/coreboot/ipchecksum.c | 54 ++++++ arch/x86/cpu/coreboot/sysinfo.c | 39 ++++ arch/x86/cpu/coreboot/tables.c | 183 ++++++++++++++++++ arch/x86/include/asm/arch-coreboot/ipchecksum.h | 37 ++++ arch/x86/include/asm/arch-coreboot/sysinfo.h | 63 +++++++ arch/x86/include/asm/arch-coreboot/tables.h | 241 ++++++++++++++++++++++++ 7 files changed, 620 insertions(+) create mode 100644 arch/x86/cpu/coreboot/ipchecksum.c create mode 100644 arch/x86/cpu/coreboot/sysinfo.c create mode 100644 arch/x86/cpu/coreboot/tables.c create mode 100644 arch/x86/include/asm/arch-coreboot/ipchecksum.h create mode 100644 arch/x86/include/asm/arch-coreboot/sysinfo.h create mode 100644 arch/x86/include/asm/arch-coreboot/tables.h (limited to 'arch/x86') diff --git a/arch/x86/cpu/coreboot/Makefile b/arch/x86/cpu/coreboot/Makefile index 0444399..13f5f8a 100644 --- a/arch/x86/cpu/coreboot/Makefile +++ b/arch/x86/cpu/coreboot/Makefile @@ -33,7 +33,10 @@ 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 diff --git a/arch/x86/cpu/coreboot/ipchecksum.c b/arch/x86/cpu/coreboot/ipchecksum.c new file mode 100644 index 0000000..57733d8 --- /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 + * 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 +#include + +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/sysinfo.c b/arch/x86/cpu/coreboot/sysinfo.c new file mode 100644 index 0000000..9b3e660 --- /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 + +/* + * 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 0000000..0e3451b --- /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 +#include +#include + +/* + * 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; +} diff --git a/arch/x86/include/asm/arch-coreboot/ipchecksum.h b/arch/x86/include/asm/arch-coreboot/ipchecksum.h new file mode 100644 index 0000000..1d73b4d --- /dev/null +++ b/arch/x86/include/asm/arch-coreboot/ipchecksum.h @@ -0,0 +1,37 @@ +/* + * This file is part of the libpayload project. + * + * It has originally been taken from the FreeBSD project. + * + * Copyright (c) 2001 Charles Mott + * 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. + */ + +#ifndef _COREBOOT_IPCHECKSUM_H +#define _COREBOOT_IPCHECKSUM_H + +unsigned short ipchksum(const void *vptr, unsigned long nbytes); + +#endif diff --git a/arch/x86/include/asm/arch-coreboot/sysinfo.h b/arch/x86/include/asm/arch-coreboot/sysinfo.h new file mode 100644 index 0000000..5c44e1a --- /dev/null +++ b/arch/x86/include/asm/arch-coreboot/sysinfo.h @@ -0,0 +1,63 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, 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 _COREBOOT_SYSINFO_H +#define _COREBOOT_SYSINFO_H + +#include + +/* Allow a maximum of 16 memory range definitions. */ +#define SYSINFO_MAX_MEM_RANGES 16 + +struct sysinfo_t { + unsigned int cpu_khz; + unsigned short ser_ioport; + unsigned long ser_base; /* for mmapped serial */ + + int n_memranges; + + struct memrange { + unsigned long long base; + unsigned long long size; + unsigned int type; + } memrange[SYSINFO_MAX_MEM_RANGES]; + + struct cb_cmos_option_table *option_table; + u32 cmos_range_start; + u32 cmos_range_end; + u32 cmos_checksum_location; + + struct cb_framebuffer *framebuffer; + + unsigned long *mbtable; /** Pointer to the multiboot table */ +}; + +extern struct sysinfo_t lib_sysinfo; + +#endif diff --git a/arch/x86/include/asm/arch-coreboot/tables.h b/arch/x86/include/asm/arch-coreboot/tables.h new file mode 100644 index 0000000..c286973 --- /dev/null +++ b/arch/x86/include/asm/arch-coreboot/tables.h @@ -0,0 +1,241 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, 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 _COREBOOT_TABLES_H +#define _COREBOOT_TABLES_H + +#include + +struct cbuint64 { + u32 lo; + u32 hi; +}; + +struct cb_header { + u8 signature[4]; + u32 header_bytes; + u32 header_checksum; + u32 table_bytes; + u32 table_checksum; + u32 table_entries; +}; + +struct cb_record { + u32 tag; + u32 size; +}; + +#define CB_TAG_UNUSED 0x0000 +#define CB_TAG_MEMORY 0x0001 + +struct cb_memory_range { + struct cbuint64 start; + struct cbuint64 size; + u32 type; +}; + +#define CB_MEM_RAM 1 +#define CB_MEM_RESERVED 2 +#define CB_MEM_ACPI 3 +#define CB_MEM_NVS 4 +#define CB_MEM_UNUSABLE 5 +#define CB_MEM_VENDOR_RSVD 6 +#define CB_MEM_TABLE 16 + +struct cb_memory { + u32 tag; + u32 size; + struct cb_memory_range map[0]; +}; + +#define CB_TAG_HWRPB 0x0002 + +struct cb_hwrpb { + u32 tag; + u32 size; + u64 hwrpb; +}; + +#define CB_TAG_MAINBOARD 0x0003 + +struct cb_mainboard { + u32 tag; + u32 size; + u8 vendor_idx; + u8 part_number_idx; + u8 strings[0]; +}; + +#define CB_TAG_VERSION 0x0004 +#define CB_TAG_EXTRA_VERSION 0x0005 +#define CB_TAG_BUILD 0x0006 +#define CB_TAG_COMPILE_TIME 0x0007 +#define CB_TAG_COMPILE_BY 0x0008 +#define CB_TAG_COMPILE_HOST 0x0009 +#define CB_TAG_COMPILE_DOMAIN 0x000a +#define CB_TAG_COMPILER 0x000b +#define CB_TAG_LINKER 0x000c +#define CB_TAG_ASSEMBLER 0x000d + +struct cb_string { + u32 tag; + u32 size; + u8 string[0]; +}; + +#define CB_TAG_SERIAL 0x000f + +struct cb_serial { + u32 tag; + u32 size; +#define CB_SERIAL_TYPE_IO_MAPPED 1 +#define CB_SERIAL_TYPE_MEMORY_MAPPED 2 + u32 type; + u32 baseaddr; + u32 baud; +}; + +#define CB_TAG_CONSOLE 0x00010 + +struct cb_console { + u32 tag; + u32 size; + u16 type; +}; + +#define CB_TAG_CONSOLE_SERIAL8250 0 +#define CB_TAG_CONSOLE_VGA 1 /* OBSOLETE */ +#define CB_TAG_CONSOLE_BTEXT 2 /* OBSOLETE */ +#define CB_TAG_CONSOLE_LOGBUF 3 +#define CB_TAG_CONSOLE_SROM 4 /* OBSOLETE */ +#define CB_TAG_CONSOLE_EHCI 5 + +#define CB_TAG_FORWARD 0x00011 + +struct cb_forward { + u32 tag; + u32 size; + u64 forward; +}; + +#define CB_TAG_FRAMEBUFFER 0x0012 +struct cb_framebuffer { + u32 tag; + u32 size; + + u64 physical_address; + u32 x_resolution; + u32 y_resolution; + u32 bytes_per_line; + u8 bits_per_pixel; + u8 red_mask_pos; + u8 red_mask_size; + u8 green_mask_pos; + u8 green_mask_size; + u8 blue_mask_pos; + u8 blue_mask_size; + u8 reserved_mask_pos; + u8 reserved_mask_size; +}; + +#define CB_TAG_CMOS_OPTION_TABLE 0x00c8 +struct cb_cmos_option_table { + u32 tag; + u32 size; + u32 header_length; +}; + +#define CB_TAG_OPTION 0x00c9 +#define CMOS_MAX_NAME_LENGTH 32 +struct cb_cmos_entries { + u32 tag; + u32 size; + u32 bit; + u32 length; + u32 config; + u32 config_id; + u8 name[CMOS_MAX_NAME_LENGTH]; +}; + + +#define CB_TAG_OPTION_ENUM 0x00ca +#define CMOS_MAX_TEXT_LENGTH 32 +struct cb_cmos_enums { + u32 tag; + u32 size; + u32 config_id; + u32 value; + u8 text[CMOS_MAX_TEXT_LENGTH]; +}; + +#define CB_TAG_OPTION_DEFAULTS 0x00cb +#define CMOS_IMAGE_BUFFER_SIZE 128 +struct cb_cmos_defaults { + u32 tag; + u32 size; + u32 name_length; + u8 name[CMOS_MAX_NAME_LENGTH]; + u8 default_set[CMOS_IMAGE_BUFFER_SIZE]; +}; + +#define CB_TAG_OPTION_CHECKSUM 0x00cc +#define CHECKSUM_NONE 0 +#define CHECKSUM_PCBIOS 1 +struct cb_cmos_checksum { + u32 tag; + u32 size; + u32 range_start; + u32 range_end; + u32 location; + u32 type; +}; + +/* Helpful macros */ + +#define MEM_RANGE_COUNT(_rec) \ + (((_rec)->size - sizeof(*(_rec))) / sizeof((_rec)->map[0])) + +#define MEM_RANGE_PTR(_rec, _idx) \ + (((u8 *) (_rec)) + sizeof(*(_rec)) \ + + (sizeof((_rec)->map[0]) * (_idx))) + +#define MB_VENDOR_STRING(_mb) \ + (((unsigned char *) ((_mb)->strings)) + (_mb)->vendor_idx) + +#define MB_PART_STRING(_mb) \ + (((unsigned char *) ((_mb)->strings)) + (_mb)->part_number_idx) + +#define UNPACK_CB64(_in) \ + ((((u64) _in.hi) << 32) | _in.lo) + +struct sysinfo_t; + +int get_coreboot_info(struct sysinfo_t *info); + +#endif -- cgit v1.1 From d3a2bc3fd148232461c2435330261aeaabf87830 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 5 Dec 2011 12:09:23 +0000 Subject: x86: Clean up the x86 zimage code in preparation to extend it This change cleans up some formatting issues in the zimage handling code, and converts it from using offsets added to a base pointer to using the available structure definitions which were already being included. Signed-off-by: Gabe Black --- arch/x86/include/asm/zimage.h | 21 ----------- arch/x86/lib/zimage.c | 82 ++++++++++++++++++++++++------------------- 2 files changed, 45 insertions(+), 58 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/zimage.h b/arch/x86/include/asm/zimage.h index a02637f..1a77e00 100644 --- a/arch/x86/include/asm/zimage.h +++ b/arch/x86/include/asm/zimage.h @@ -27,27 +27,6 @@ /* linux i386 zImage/bzImage header. Offsets relative to * the start of the image */ -#define CMD_LINE_MAGIC_OFF 0x020 /* Magic 0xa33f if the offset below is valid */ -#define CMD_LINE_OFFSET_OFF 0x022 /* Offset to comandline */ -#define SETUP_SECTS_OFF 0x1F1 /* The size of the setup in sectors */ -#define ROOT_FLAGS_OFF 0x1F2 /* If set, the root is mounted readonly */ -#define VID_MODE_OFF 0x1FA /* Video mode control */ -#define ROOT_DEV_OFF 0x1FC /* Default root device number */ -#define BOOT_FLAG_OFF 0x1FE /* 0xAA55 magic number */ -#define HEADER_OFF 0x202 /* Magic signature "HdrS" */ -#define VERSION_OFF 0x206 /* Boot protocol version supported */ -#define REALMODE_SWTCH_OFF 0x208 /* Boot loader hook (see below) */ -#define START_SYS_OFF 0x20C /* Points to kernel version string */ -#define TYPE_OF_LOADER_OFF 0x210 /* Boot loader identifier */ -#define LOADFLAGS_OFF 0x211 /* Boot protocol option flags */ -#define SETUP_MOVE_SIZE_OFF 0x212 /* Move to high memory size (used with hooks) */ -#define CODE32_START_OFF 0x214 /* Boot loader hook (see below) */ -#define RAMDISK_IMAGE_OFF 0x218 /* initrd load address (set by boot loader) */ -#define RAMDISK_SIZE_OFF 0x21C /* initrd size (set by boot loader) */ -#define HEAP_END_PTR_OFF 0x224 /* Free memory after setup end */ -#define CMD_LINE_PTR_OFF 0x228 /* 32-bit pointer to the kernel command line */ - - #define HEAP_FLAG 0x80 #define BIG_KERNEL_FLAG 0x01 diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index 8b42b5c..98e7507 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2011 The Chromium OS Authors. * (C) Copyright 2002 * Daniel Engström, Omicron Ceti AB, * @@ -82,21 +83,22 @@ void *load_zimage(char *image, unsigned long kernel_size, unsigned long initrd_addr, unsigned long initrd_size, int auto_boot) { - void *setup_base; + struct boot_params *setup_base; int setup_size; int bootproto; int big_image; void *load_address; - struct setup_header *hdr; - hdr = (struct setup_header *)(image + SETUP_SECTS_OFF); + struct boot_params *params = (struct boot_params *)image; + struct setup_header *hdr = ¶ms->hdr; /* base address for real-mode segment */ - setup_base = (void *)DEFAULT_SETUP_BASE; + setup_base = (struct boot_params *)DEFAULT_SETUP_BASE; if (KERNEL_MAGIC != hdr->boot_flag) { - printf("Error: Invalid Boot Flag (found 0x%04x, expected 0x%04x)\n", - hdr->boot_flag, KERNEL_MAGIC); + printf("Error: Invalid Boot Flag " + "(found 0x%04x, expected 0x%04x)\n", + hdr->boot_flag, KERNEL_MAGIC); return 0; } else { printf("Valid Boot Flag\n"); @@ -131,9 +133,10 @@ void *load_zimage(char *image, unsigned long kernel_size, (hdr->loadflags & BIG_KERNEL_FLAG); /* Determine load address */ - load_address = (void *)(big_image ? - BZIMAGE_LOAD_ADDR : - ZIMAGE_LOAD_ADDR); + if (big_image) + load_address = (void *)BZIMAGE_LOAD_ADDR; + else + load_address = (void *)ZIMAGE_LOAD_ADDR; /* load setup */ printf("Moving Real-Mode Code to 0x%8.8lx (%d bytes)\n", @@ -144,8 +147,8 @@ void *load_zimage(char *image, unsigned long kernel_size, (bootproto & 0xff00) >> 8, bootproto & 0xff); if (bootproto == 0x0100) { - *(u16 *)(setup_base + CMD_LINE_MAGIC_OFF) = COMMAND_LINE_MAGIC; - *(u16 *)(setup_base + CMD_LINE_OFFSET_OFF) = COMMAND_LINE_OFFSET; + setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC; + setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET; /* * A very old kernel MUST have its real-mode code @@ -157,33 +160,36 @@ void *load_zimage(char *image, unsigned long kernel_size, /* Copy the command line */ memmove((void *)0x99000, - setup_base + COMMAND_LINE_OFFSET, + (u8 *)setup_base + COMMAND_LINE_OFFSET, COMMAND_LINE_SIZE); /* Relocated */ - setup_base = (void *)0x90000; + setup_base = (struct boot_params *)0x90000; } /* It is recommended to clear memory up to the 32K mark */ - memset((void *)0x90000 + setup_size, 0, - SETUP_MAX_SIZE-setup_size); + memset((u8 *)0x90000 + setup_size, 0, + SETUP_MAX_SIZE - setup_size); } /* We are now setting up the real-mode version of the header */ - hdr = (struct setup_header *)(setup_base + SETUP_SECTS_OFF); + hdr = &setup_base->hdr; if (bootproto >= 0x0200) { hdr->type_of_loader = 8; - if (hdr->setup_sects >= 15) + if (hdr->setup_sects >= 15) { printf("Linux kernel version %s\n", - (char *)(setup_base + - (hdr->kernel_version + 0x200))); - else - printf("Setup Sectors < 15 - Cannot print kernel version.\n"); + (char *)setup_base + + hdr->kernel_version + 0x200); + } else { + printf("Setup Sectors < 15 - " + "Cannot print kernel version.\n"); + } if (initrd_addr) { - printf("Initial RAM disk at linear address 0x%08lx, size %ld bytes\n", + printf("Initial RAM disk at linear address " + "0x%08lx, size %ld bytes\n", initrd_addr, initrd_size); hdr->ramdisk_image = initrd_addr; @@ -197,11 +203,11 @@ void *load_zimage(char *image, unsigned long kernel_size, } if (bootproto >= 0x0202) { - hdr->cmd_line_ptr = (u32)setup_base + COMMAND_LINE_OFFSET; + hdr->cmd_line_ptr = + (uintptr_t)setup_base + COMMAND_LINE_OFFSET; } else if (bootproto >= 0x0200) { - - *(u16 *)(setup_base + CMD_LINE_MAGIC_OFF) = COMMAND_LINE_MAGIC; - *(u16 *)(setup_base + CMD_LINE_OFFSET_OFF) = COMMAND_LINE_OFFSET; + setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC; + setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET; hdr->setup_move_size = 0x9100; } @@ -214,11 +220,11 @@ void *load_zimage(char *image, unsigned long kernel_size, if (big_image) { if ((kernel_size) > BZIMAGE_MAX_SIZE) { - printf("Error: bzImage kernel too big! (size: %ld, max: %d)\n", - kernel_size, BZIMAGE_MAX_SIZE); + printf("Error: bzImage kernel too big! " + "(size: %ld, max: %d)\n", + kernel_size, BZIMAGE_MAX_SIZE); return 0; } - } else if ((kernel_size) > ZIMAGE_MAX_SIZE) { printf("Error: zImage kernel too big! (size: %ld, max: %d)\n", kernel_size, ZIMAGE_MAX_SIZE); @@ -226,7 +232,7 @@ void *load_zimage(char *image, unsigned long kernel_size, } /* build command line at COMMAND_LINE_OFFSET */ - build_command_line(setup_base + COMMAND_LINE_OFFSET, auto_boot); + build_command_line((char *)setup_base + COMMAND_LINE_OFFSET, auto_boot); printf("Loading %czImage at address 0x%08x (%ld bytes)\n", big_image ? 'b' : ' ', (u32)load_address, kernel_size); @@ -248,8 +254,8 @@ void boot_zimage(void *setup_base) regs.xss = regs.xds; regs.esp = 0x9000; regs.eflags = 0; - enter_realmode(((u32)setup_base+SETUP_START_OFFSET)>>4, 0, ®s, - ®s); + enter_realmode(((u32)setup_base + SETUP_START_OFFSET) >> 4, 0, + ®s, ®s); } int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) @@ -264,11 +270,12 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) /* Setup board for maximum PC/AT Compatibility */ setup_pcat_compatibility(); - if (argc >= 2) + if (argc >= 2) { /* argv[1] holds the address of the bzImage */ s = argv[1]; - else + } else { s = getenv("fileaddr"); + } if (s) bzImage_addr = (void *)simple_strtoul(s, NULL, 16); @@ -277,14 +284,15 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) /* argv[2] holds the size of the bzImage */ bzImage_size = simple_strtoul(argv[2], NULL, 16); - /* Lets look for*/ + /* Lets look for */ base_ptr = load_zimage(bzImage_addr, bzImage_size, 0, 0, 0); if (!base_ptr) { printf("## Kernel loading failed ...\n"); } else { - printf("## Transferring control to Linux (at address %08x) ...\n", - (u32)base_ptr); + printf("## Transferring control to Linux " + "(at address %08x) ...\n", + (u32)base_ptr); /* we assume that the kernel is in place */ printf("\nStarting kernel ...\n\n"); -- cgit v1.1 From 233dbc119438ad17bb0bc7104ba7972415c4f7e7 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 5 Dec 2011 12:09:24 +0000 Subject: x86: Add support for booting Linux using the 32 bit boot protocol This change conditionally modifies the zboot command so that it can use the 32 bit boot protocol. This is necessary because the 16 bit realmode entry point assumes that it can call BIOS services which neither coreboot nor u-boot provide. Signed-off-by: Gabe Black --- arch/x86/include/asm/zimage.h | 9 ++++-- arch/x86/lib/bootm.c | 6 ++-- arch/x86/lib/zimage.c | 64 ++++++++++++++++++++++++++++++++++--------- 3 files changed, 62 insertions(+), 17 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/zimage.h b/arch/x86/include/asm/zimage.h index 1a77e00..3a68bb0 100644 --- a/arch/x86/include/asm/zimage.h +++ b/arch/x86/include/asm/zimage.h @@ -24,6 +24,8 @@ #ifndef _ASM_ZIMAGE_H_ #define _ASM_ZIMAGE_H_ +#include + /* linux i386 zImage/bzImage header. Offsets relative to * the start of the image */ @@ -44,10 +46,13 @@ #define BZIMAGE_LOAD_ADDR 0x100000 #define ZIMAGE_LOAD_ADDR 0x10000 +/* Implementation defined function to install an e820 map. */ +unsigned install_e820_map(unsigned max_entries, struct e820entry *); + void *load_zimage(char *image, unsigned long kernel_size, unsigned long initrd_addr, unsigned long initrd_size, - int auto_boot); + int auto_boot, void **load_address); -void boot_zimage(void *setup_base); +void boot_zimage(void *setup_base, void *load_address); #endif diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c index bac7b4f..ba3875b 100644 --- a/arch/x86/lib/bootm.c +++ b/arch/x86/lib/bootm.c @@ -38,6 +38,7 @@ int do_bootm_linux(int flag, int argc, char * const argv[], void *base_ptr = NULL; ulong os_data, os_len; image_header_t *hdr; + void *load_address; #if defined(CONFIG_FIT) const void *data; @@ -75,7 +76,8 @@ int do_bootm_linux(int flag, int argc, char * const argv[], #ifdef CONFIG_CMD_ZBOOT base_ptr = load_zimage((void *)os_data, os_len, - images->rd_start, images->rd_end - images->rd_start, 0); + images->rd_start, images->rd_end - images->rd_start, + 0, &load_address); #endif if (NULL == base_ptr) { @@ -92,7 +94,7 @@ int do_bootm_linux(int flag, int argc, char * const argv[], /* we assume that the kernel is in place */ printf("\nStarting kernel ...\n\n"); - boot_zimage(base_ptr); + boot_zimage(base_ptr, load_address); /* does not return */ error: diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index 98e7507..b5597ec 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -52,6 +52,16 @@ #define COMMAND_LINE_SIZE 2048 +unsigned generic_install_e820_map(unsigned max_entries, + struct e820entry *entries) +{ + return 0; +} + +unsigned install_e820_map(unsigned max_entries, + struct e820entry *entries) + __attribute__((weak, alias("generic_install_e820_map"))); + static void build_command_line(char *command_line, int auto_boot) { char *env_command_line; @@ -81,13 +91,12 @@ static void build_command_line(char *command_line, int auto_boot) void *load_zimage(char *image, unsigned long kernel_size, unsigned long initrd_addr, unsigned long initrd_size, - int auto_boot) + int auto_boot, void **load_address) { struct boot_params *setup_base; int setup_size; int bootproto; int big_image; - void *load_address; struct boot_params *params = (struct boot_params *)image; struct setup_header *hdr = ¶ms->hdr; @@ -134,14 +143,23 @@ void *load_zimage(char *image, unsigned long kernel_size, /* Determine load address */ if (big_image) - load_address = (void *)BZIMAGE_LOAD_ADDR; + *load_address = (void *)BZIMAGE_LOAD_ADDR; else - load_address = (void *)ZIMAGE_LOAD_ADDR; + *load_address = (void *)ZIMAGE_LOAD_ADDR; +#if defined CONFIG_ZBOOT_32 + printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base); + memset(setup_base, 0, sizeof(*setup_base)); + setup_base->hdr = params->hdr; + + setup_base->e820_entries = install_e820_map( + ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map); +#else /* load setup */ printf("Moving Real-Mode Code to 0x%8.8lx (%d bytes)\n", (ulong)setup_base, setup_size); memmove(setup_base, image, setup_size); +#endif printf("Using boot protocol version %x.%02x\n", (bootproto & 0xff00) >> 8, bootproto & 0xff); @@ -180,7 +198,7 @@ void *load_zimage(char *image, unsigned long kernel_size, if (hdr->setup_sects >= 15) { printf("Linux kernel version %s\n", - (char *)setup_base + + (char *)params + hdr->kernel_version + 0x200); } else { printf("Setup Sectors < 15 - " @@ -235,17 +253,36 @@ void *load_zimage(char *image, unsigned long kernel_size, build_command_line((char *)setup_base + COMMAND_LINE_OFFSET, auto_boot); printf("Loading %czImage at address 0x%08x (%ld bytes)\n", - big_image ? 'b' : ' ', (u32)load_address, kernel_size); - + big_image ? 'b' : ' ', (u32)*load_address, kernel_size); - memmove(load_address, image + setup_size, kernel_size); + memmove(*load_address, image + setup_size, kernel_size); /* ready for booting */ return setup_base; } -void boot_zimage(void *setup_base) +void boot_zimage(void *setup_base, void *load_address) { + printf("\nStarting kernel ...\n\n"); + +#if defined CONFIG_ZBOOT_32 + /* + * Set %ebx, %ebp, and %edi to 0, %esi to point to the boot_params + * structure, and then jump to the kernel. We assume that %cs is + * 0x10, 4GB flat, and read/execute, and the data segments are 0x18, + * 4GB flat, and read/write. U-boot is setting them up that way for + * itself in arch/i386/cpu/cpu.c. + */ + __asm__ __volatile__ ( + "movl $0, %%ebp \n" + "cli \n" + "jmp %[kernel_entry] \n" + :: [kernel_entry]"a"(load_address), + [boot_params] "S"(setup_base), + "b"(0), "D"(0) + : "%ebp" + ); +#else struct pt_regs regs; memset(®s, 0, sizeof(struct pt_regs)); @@ -256,12 +293,14 @@ void boot_zimage(void *setup_base) regs.eflags = 0; enter_realmode(((u32)setup_base + SETUP_START_OFFSET) >> 4, 0, ®s, ®s); +#endif } int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { void *base_ptr; void *bzImage_addr = NULL; + void *load_address; char *s; ulong bzImage_size = 0; @@ -285,7 +324,8 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) bzImage_size = simple_strtoul(argv[2], NULL, 16); /* Lets look for */ - base_ptr = load_zimage(bzImage_addr, bzImage_size, 0, 0, 0); + base_ptr = load_zimage(bzImage_addr, bzImage_size, 0, 0, 0, + &load_address); if (!base_ptr) { printf("## Kernel loading failed ...\n"); @@ -295,9 +335,7 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) (u32)base_ptr); /* we assume that the kernel is in place */ - printf("\nStarting kernel ...\n\n"); - - boot_zimage(base_ptr); + boot_zimage(base_ptr, load_address); /* does not return */ } -- cgit v1.1 From f08fa7a2018495c6f2a5eaba5f6d8fdcbc67e6c6 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 5 Dec 2011 12:09:25 +0000 Subject: x86: Add infrastructure to extract an e820 table from the coreboot tables Also approximate the size of RAM using the largest RAM address available in the tables. There may be areas which are marked as reserved which are actually at the end of RAM. Signed-off-by: Gabe Black --- arch/x86/cpu/coreboot/sdram.c | 38 +++++++++++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/cpu/coreboot/sdram.c b/arch/x86/cpu/coreboot/sdram.c index b56085a..f8fdac6 100644 --- a/arch/x86/cpu/coreboot/sdram.c +++ b/arch/x86/cpu/coreboot/sdram.c @@ -23,13 +23,49 @@ */ #include +#include +#include #include +#include +#include +#include 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) { - gd->ram_size = 64*1024*1024; + 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; } -- cgit v1.1 From 69370d144a9e8133461f1662131fbf97ad121165 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 5 Dec 2011 12:09:26 +0000 Subject: x86: Refactor the zboot innards so they can be reused with a vboot image If vboot successfully verifies a kernel, it will leave it in place and basically ready to boot. The zeropage table which is part of the x86 boot protocol is at the end of the kernel, though, instead of the beginning, and because the image is already in place there's no need to copy it around. This change refactors the code which implements the zboot command so that the configuration of the zeropage table and loading the pieces of the kernel into memory are done separately. Also, because the command line goes before the zeropage table in vboot which is somewhat incompatible with the normal protocol, where to put the command line is a now a parameter instead of being hard coded. Signed-off-by: Gabe Black --- arch/x86/include/asm/zimage.h | 8 +- arch/x86/lib/bootm.c | 21 +++-- arch/x86/lib/zimage.c | 183 ++++++++++++++++++++++++------------------ 3 files changed, 122 insertions(+), 90 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/zimage.h b/arch/x86/include/asm/zimage.h index 3a68bb0..f03ea80 100644 --- a/arch/x86/include/asm/zimage.h +++ b/arch/x86/include/asm/zimage.h @@ -24,6 +24,7 @@ #ifndef _ASM_ZIMAGE_H_ #define _ASM_ZIMAGE_H_ +#include #include /* linux i386 zImage/bzImage header. Offsets relative to @@ -49,9 +50,10 @@ /* Implementation defined function to install an e820 map. */ unsigned install_e820_map(unsigned max_entries, struct e820entry *); -void *load_zimage(char *image, unsigned long kernel_size, - unsigned long initrd_addr, unsigned long initrd_size, - int auto_boot, void **load_address); +struct boot_params *load_zimage(char *image, unsigned long kernel_size, + void **load_address); +int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot, + unsigned long initrd_addr, unsigned long initrd_size); void boot_zimage(void *setup_base, void *load_address); diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c index ba3875b..83caf6b 100644 --- a/arch/x86/lib/bootm.c +++ b/arch/x86/lib/bootm.c @@ -28,17 +28,20 @@ #include #include #include +#include #include #include +#define COMMAND_LINE_OFFSET 0x9000 + /*cmd_boot.c*/ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images) { - void *base_ptr = NULL; - ulong os_data, os_len; - image_header_t *hdr; - void *load_address; + struct boot_params *base_ptr = NULL; + ulong os_data, os_len; + image_header_t *hdr; + void *load_address; #if defined(CONFIG_FIT) const void *data; @@ -75,15 +78,19 @@ int do_bootm_linux(int flag, int argc, char * const argv[], } #ifdef CONFIG_CMD_ZBOOT - base_ptr = load_zimage((void *)os_data, os_len, - images->rd_start, images->rd_end - images->rd_start, - 0, &load_address); + base_ptr = load_zimage((void *)os_data, os_len, &load_address); #endif if (NULL == base_ptr) { printf("## Kernel loading failed ...\n"); goto error; + } + if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET, + 0, images->rd_start, + images->rd_end - images->rd_start)) { + printf("## Setting up boot parameters failed ...\n"); + goto error; } #ifdef DEBUG diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index b5597ec..0cbb571 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -89,21 +89,8 @@ static void build_command_line(char *command_line, int auto_boot) printf("Kernel command line: \"%s\"\n", command_line); } -void *load_zimage(char *image, unsigned long kernel_size, - unsigned long initrd_addr, unsigned long initrd_size, - int auto_boot, void **load_address) +static int kernel_magic_ok(struct setup_header *hdr) { - struct boot_params *setup_base; - int setup_size; - int bootproto; - int big_image; - - struct boot_params *params = (struct boot_params *)image; - struct setup_header *hdr = ¶ms->hdr; - - /* base address for real-mode segment */ - setup_base = (struct boot_params *)DEFAULT_SETUP_BASE; - if (KERNEL_MAGIC != hdr->boot_flag) { printf("Error: Invalid Boot Flag " "(found 0x%04x, expected 0x%04x)\n", @@ -111,18 +98,38 @@ void *load_zimage(char *image, unsigned long kernel_size, return 0; } else { printf("Valid Boot Flag\n"); + return 1; } +} - /* determine boot protocol version */ - if (KERNEL_V2_MAGIC == hdr->header) { +static int get_boot_protocol(struct setup_header *hdr) +{ + if (hdr->header == KERNEL_V2_MAGIC) { printf("Magic signature found\n"); - - bootproto = hdr->version; + return hdr->version; } else { /* Very old kernel */ printf("Magic signature not found\n"); - bootproto = 0x0100; + return 0x0100; } +} + +struct boot_params *load_zimage(char *image, unsigned long kernel_size, + void **load_address) +{ + struct boot_params *setup_base; + int setup_size; + int bootproto; + int big_image; + + struct boot_params *params = (struct boot_params *)image; + struct setup_header *hdr = ¶ms->hdr; + + /* base address for real-mode segment */ + setup_base = (struct boot_params *)DEFAULT_SETUP_BASE; + + if (!kernel_magic_ok(hdr)) + return 0; /* determine size of setup */ if (0 == hdr->setup_sects) { @@ -137,6 +144,23 @@ void *load_zimage(char *image, unsigned long kernel_size, if (setup_size > SETUP_MAX_SIZE) printf("Error: Setup is too large (%d bytes)\n", setup_size); + /* determine boot protocol version */ + bootproto = get_boot_protocol(hdr); + + printf("Using boot protocol version %x.%02x\n", + (bootproto & 0xff00) >> 8, bootproto & 0xff); + + if (bootproto >= 0x0200) { + if (hdr->setup_sects >= 15) { + printf("Linux kernel version %s\n", + (char *)params + + hdr->kernel_version + 0x200); + } else { + printf("Setup Sectors < 15 - " + "Cannot print kernel version.\n"); + } + } + /* Determine image type */ big_image = (bootproto >= 0x0200) && (hdr->loadflags & BIG_KERNEL_FLAG); @@ -151,9 +175,6 @@ void *load_zimage(char *image, unsigned long kernel_size, printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base); memset(setup_base, 0, sizeof(*setup_base)); setup_base->hdr = params->hdr; - - setup_base->e820_entries = install_e820_map( - ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map); #else /* load setup */ printf("Moving Real-Mode Code to 0x%8.8lx (%d bytes)\n", @@ -161,13 +182,12 @@ void *load_zimage(char *image, unsigned long kernel_size, memmove(setup_base, image, setup_size); #endif - printf("Using boot protocol version %x.%02x\n", - (bootproto & 0xff00) >> 8, bootproto & 0xff); + if (bootproto >= 0x0204) + kernel_size = hdr->syssize * 16; + else + kernel_size -= setup_size; if (bootproto == 0x0100) { - setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC; - setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET; - /* * A very old kernel MUST have its real-mode code * loaded at 0x90000 @@ -190,21 +210,45 @@ void *load_zimage(char *image, unsigned long kernel_size, SETUP_MAX_SIZE - setup_size); } - /* We are now setting up the real-mode version of the header */ - hdr = &setup_base->hdr; + if (big_image) { + if (kernel_size > BZIMAGE_MAX_SIZE) { + printf("Error: bzImage kernel too big! " + "(size: %ld, max: %d)\n", + kernel_size, BZIMAGE_MAX_SIZE); + return 0; + } + } else if ((kernel_size) > ZIMAGE_MAX_SIZE) { + printf("Error: zImage kernel too big! (size: %ld, max: %d)\n", + kernel_size, ZIMAGE_MAX_SIZE); + return 0; + } + + printf("Loading %s at address %p (%ld bytes)\n", + big_image ? "bzImage" : "zImage", *load_address, kernel_size); + + memmove(*load_address, image + setup_size, kernel_size); + + return setup_base; +} + +int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot, + unsigned long initrd_addr, unsigned long initrd_size) +{ + struct setup_header *hdr = &setup_base->hdr; + int bootproto = get_boot_protocol(hdr); + +#if defined CONFIG_ZBOOT_32 + setup_base->e820_entries = install_e820_map( + ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map); +#endif + if (bootproto == 0x0100) { + setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC; + setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET; + } if (bootproto >= 0x0200) { hdr->type_of_loader = 8; - if (hdr->setup_sects >= 15) { - printf("Linux kernel version %s\n", - (char *)params + - hdr->kernel_version + 0x200); - } else { - printf("Setup Sectors < 15 - " - "Cannot print kernel version.\n"); - } - if (initrd_addr) { printf("Initial RAM disk at linear address " "0x%08lx, size %ld bytes\n", @@ -221,44 +265,18 @@ void *load_zimage(char *image, unsigned long kernel_size, } if (bootproto >= 0x0202) { - hdr->cmd_line_ptr = - (uintptr_t)setup_base + COMMAND_LINE_OFFSET; + hdr->cmd_line_ptr = (uintptr_t)cmd_line; } else if (bootproto >= 0x0200) { setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC; - setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET; + setup_base->screen_info.cl_offset = + (uintptr_t)cmd_line - (uintptr_t)setup_base; hdr->setup_move_size = 0x9100; } - if (bootproto >= 0x0204) - kernel_size = hdr->syssize * 16; - else - kernel_size -= setup_size; - - - if (big_image) { - if ((kernel_size) > BZIMAGE_MAX_SIZE) { - printf("Error: bzImage kernel too big! " - "(size: %ld, max: %d)\n", - kernel_size, BZIMAGE_MAX_SIZE); - return 0; - } - } else if ((kernel_size) > ZIMAGE_MAX_SIZE) { - printf("Error: zImage kernel too big! (size: %ld, max: %d)\n", - kernel_size, ZIMAGE_MAX_SIZE); - return 0; - } - /* build command line at COMMAND_LINE_OFFSET */ - build_command_line((char *)setup_base + COMMAND_LINE_OFFSET, auto_boot); - - printf("Loading %czImage at address 0x%08x (%ld bytes)\n", - big_image ? 'b' : ' ', (u32)*load_address, kernel_size); - - memmove(*load_address, image + setup_size, kernel_size); - - /* ready for booting */ - return setup_base; + build_command_line(cmd_line, auto_boot); + return 0; } void boot_zimage(void *setup_base, void *load_address) @@ -298,7 +316,7 @@ void boot_zimage(void *setup_base, void *load_address) int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { - void *base_ptr; + struct boot_params *base_ptr; void *bzImage_addr = NULL; void *load_address; char *s; @@ -324,20 +342,25 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) bzImage_size = simple_strtoul(argv[2], NULL, 16); /* Lets look for */ - base_ptr = load_zimage(bzImage_addr, bzImage_size, 0, 0, 0, - &load_address); + base_ptr = load_zimage(bzImage_addr, bzImage_size, &load_address); if (!base_ptr) { printf("## Kernel loading failed ...\n"); - } else { - printf("## Transferring control to Linux " - "(at address %08x) ...\n", - (u32)base_ptr); - - /* we assume that the kernel is in place */ - boot_zimage(base_ptr, load_address); - /* does not return */ + return -1; } + if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET, + 0, 0, 0)) { + printf("Setting up boot parameters failed ...\n"); + return -1; + } + + printf("## Transferring control to Linux " + "(at address %08x) ...\n", + (u32)base_ptr); + + /* we assume that the kernel is in place */ + boot_zimage(base_ptr, load_address); + /* does not return */ return -1; } -- cgit v1.1 From 6f9d9986d54cb53e50b33a044a9c89572736d96a Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 5 Dec 2011 12:09:27 +0000 Subject: x86: Add support for specifying an initrd with the zboot command This change finishes plumbing the initrd support built into the zboot mechanism out to the command interface. It also fixes a bug in the command declaration where the kernel size could be passed as an optional second parameter but not enough arguments were allowed. Signed-off-by: Gabe Black --- arch/x86/lib/zimage.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index 0cbb571..bb40517 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -321,6 +321,8 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) void *load_address; char *s; ulong bzImage_size = 0; + ulong initrd_addr = 0; + ulong initrd_size = 0; disable_interrupts(); @@ -337,9 +339,15 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) if (s) bzImage_addr = (void *)simple_strtoul(s, NULL, 16); - if (argc >= 3) + if (argc >= 3) { /* argv[2] holds the size of the bzImage */ bzImage_size = simple_strtoul(argv[2], NULL, 16); + } + + if (argc >= 4) + initrd_addr = simple_strtoul(argv[3], NULL, 16); + if (argc >= 5) + initrd_size = simple_strtoul(argv[4], NULL, 16); /* Lets look for */ base_ptr = load_zimage(bzImage_addr, bzImage_size, &load_address); @@ -349,7 +357,7 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) return -1; } if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET, - 0, 0, 0)) { + 0, initrd_addr, initrd_size)) { printf("Setting up boot parameters failed ...\n"); return -1; } @@ -366,7 +374,14 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) } U_BOOT_CMD( - zboot, 2, 0, do_zboot, + zboot, 5, 0, do_zboot, "Boot bzImage", - "" + "[addr] [size] [initrd addr] [initrd size]\n" + " addr - The optional starting address of the bzimage.\n" + " If not set it defaults to the environment\n" + " variable \"fileaddr\".\n" + " size - The optional size of the bzimage. Defaults to\n" + " zero.\n" + " initrd addr - The address of the initrd image to use, if any.\n" + " initrd size - The size of the initrd image to use, if any.\n" ); -- cgit v1.1