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[PATCH] libpayload: Add multiboot support

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Make libpayload applications multiboot compatible.  Add the
multiboot OS table and grok the loader table, especially the
memory map and the command line.  This makes libpayload 
applications loadable by GRUB.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3673 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Jordan Crouse
2008-10-20 16:51:43 +00:00
parent 369a5f6c7a
commit 20c9cf12a4
10 changed files with 234 additions and 3 deletions
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13
payloads/libpayload/i386/main.c
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@@ -29,13 +29,21 @@
#include <libpayload.h>
unsigned long loader_eax; /**< The value of EAX passed from the loader */
unsigned long loader_ebx; /**< The value of EBX passed from the loader */
unsigned int main_argc; /**< The argc value to pass to main() */
/** The argv value to pass to main() */
char *main_argv[MAX_ARGC_COUNT];
/**
* This is our C entry function - set up the system
* and jump into the payload entry point.
*/
void start_main(void)
{
extern int main(void);
extern int main(int argc, char **argv);
/* Set up the consoles. */
console_init();
@@ -52,7 +60,8 @@ void start_main(void)
* Go to the entry point.
* In the future we may care about the return value.
*/
(void) main();
(void) main(main_argc, (main_argc != 0) ? main_argv : NULL);
/*
* Returning here will go to the _leave function to return