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[PATCH] Add sysinfo_have_multiboot function 

Add a new infrastructure for returning system information to payloads.
First up - a pointer to the multiboot table.

Signed-off-by: Jordan Crouse <jordan@cosmicpenguin.net>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3743 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Jordan Crouse 2008-11-11 19:51:14 +00:00 committed by Jordan Crouse
parent 3b6c527322
commit 6c6e4333c4
5 changed files with 53 additions and 1 deletions
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2
payloads/libpayload/i386/multiboot.c
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@ -86,6 +86,8 @@ int get_multiboot_info(struct sysinfo_t *info)
table = (struct multiboot_header *) phys_to_virt(loader_ebx);
info->mbtable = phys_to_virt(loader_ebx);
if (table->flags & MULTIBOOT_FLAGS_MMAP)
mb_parse_mmap(table, info);

9
payloads/libpayload/include/libpayload.h
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@ -420,6 +420,15 @@ int lfseek(struct LFILE *stream, long offset, int whence);
int lfclose(struct LFILE *file);
/** @} */
/**
* @defgroup info System information functions
* This module contains functions that return information about the system
* @{
*/
int sysinfo_have_multiboot(unsigned long *addr);
/** @} */
/**
* @defgroup arch Architecture specific functions
* This module contains global architecture specific functions.

2
payloads/libpayload/include/sysinfo.h
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@ -48,6 +48,8 @@ struct sysinfo_t {
u32 cmos_range_start;
u32 cmos_range_end;
u32 cmos_checksum_location;
unsigned long *mbtable; /** Pointer to the multiboot table */
};
extern struct sysinfo_t lib_sysinfo;

2
payloads/libpayload/libc/Makefile.inc
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@ -31,4 +31,4 @@
TARGETS-$(CONFIG_LIBC) += libc/malloc.o libc/printf.o libc/console.o libc/string.o
TARGETS-$(CONFIG_LIBC) += libc/memory.o libc/ctype.o libc/ipchecksum.o libc/lib.o
TARGETS-$(CONFIG_LIBC) += libc/rand.o libc/time.o libc/lar.o libc/exec.o
TARGETS-$(CONFIG_LIBC) += libc/readline.o
TARGETS-$(CONFIG_LIBC) += libc/readline.o libc/sysinfo.o

39
payloads/libpayload/libc/sysinfo.c Normal file
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@ -0,0 +1,39 @@
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
*
* 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 <libpayload.h>
#include <sysinfo.h>
extern struct sysinfo_t lib_sysinfo;
int sysinfo_have_multiboot(unsigned long *addr)
{
*addr = (unsigned long) lib_sysinfo.mbtable;
return (lib_sysinfo.mbtable == 0) ? 0 : 1;
}