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| author | Michael Brown | 2007-01-11 19:41:15 +0100 |
|---|---|---|
| committer | Michael Brown | 2007-01-11 19:41:15 +0100 |
| commit | dc51af59a4630d73add1ceadfdbc8bd780a2850f (patch) | |
| tree | a5b337495e479f4852d088217fd16618b11e2623 /src/arch/i386 | |
| parent | Add PHYS_CODE, for use as in __asm__ ( PHYS_CODE ( ... ) ), comparable (diff) | |
| download | ipxe-dc51af59a4630d73add1ceadfdbc8bd780a2850f.tar.gz ipxe-dc51af59a4630d73add1ceadfdbc8bd780a2850f.tar.xz ipxe-dc51af59a4630d73add1ceadfdbc8bd780a2850f.zip | |
Capable of starting a multiboot kernel (albeit without the multiboot
information table yet).
Diffstat (limited to 'src/arch/i386')
| -rw-r--r-- | src/arch/i386/image/multiboot.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/arch/i386/image/multiboot.c b/src/arch/i386/image/multiboot.c index cbab6a5c3..cfe4589a2 100644 --- a/src/arch/i386/image/multiboot.c +++ b/src/arch/i386/image/multiboot.c @@ -74,8 +74,21 @@ struct multiboot_header_info { * @v image ELF file * @ret rc Return status code */ -static int multiboot_execute ( struct image *image __unused ) { - return -ENOTSUP; +static int multiboot_execute ( struct image *image ) { + struct multiboot_info mbinfo; + + /* Populate multiboot information structure */ + memset ( &mbinfo, 0, sizeof ( mbinfo ) ); + + + /* Jump to OS with flat physical addressing */ + __asm__ ( PHYS_CODE ( "call *%%edi\n\t" ) + : : "a" ( MULTIBOOT_BOOTLOADER_MAGIC ), + "b" ( virt_to_phys ( &mbinfo ) ), + "D" ( image->entry ) + : "ecx", "edx", "esi", "ebp" ); + + return -ECANCELED; } /** |