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Use an option rom instead of boot sector for -kernel

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Generate an option rom instead of using a hijacked boot sector for kernel
booting.  This just requires adding a small option ROM header and a few more
instructions to the boot sector to take over the int19 vector and run our
boot code.

A disk is no longer needed when using -kernel on x86.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5650 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-11-08 16:27:07 +00:00
parent 6223246ad9
commit 4fc9af53d8
4 changed files with 50 additions and 58 deletions
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3
block_int.h
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@ -104,9 +104,6 @@ struct BlockDriverState {
BlockDriver *drv; /* NULL means no media */
void *opaque;
int boot_sector_enabled;
uint8_t boot_sector_data[512];
char filename[1024];
char backing_file[1024]; /* if non zero, the image is a diff of
this file image */