On Wed, Aug 12, 2009 at 03:29:06PM +0800, Jason Wang wrote: > Hi Kevin, > The Seabios try to booting usbrom with IPL_TYPE_BEV, which i think > should use IPL_TYPE_HARDDISK, right? Followed by BIOS BOOT Specification > I think it can add > #define IPL_TYPE_USBROM 0x05 to support BCV, how do you think about that?
SeaBIOS is overloading those flags, and I agree it's confusing. The flags for BCV tables are only used in run_bcv(), add_bcv(), and add_bcv_hd(). It's not necessary to add a new flag. On Wed, Aug 12, 2009 at 10:59:51AM +0800, Jason Wang wrote: > I use a BCV now, sorry for messing this two types. Which i use is BCV. > I tried to put only an "lretw" in BCV. but still failed. > > > I don't know why you can't return - it should work. Maybe the stack > > or gdt/idt was changed? As before, I'd double check that you've restored the stack, segments, cr0, and gdt/idt. > > As above, define a BCV and hook int13 from the BCV handler. > > > So, BCV handler is used to hook int13, anything else that BCV should do? That should be it. -Kevin -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
