Date: Thu, 27 Jan 2000 13:21:02 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/boot/i386 Makefile src/sys/boot/i386/btx/btxldr btxldr.s src/sys/boot/i386/cdldr Makefile cdldr.s src/sys/boot/i386/loader Makefile main.c Message-ID: <200001272121.NAA71655@freefall.freebsd.org>
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jhb 2000/01/27 13:21:02 PST
Modified files:
sys/boot/i386 Makefile
sys/boot/i386/btx/btxldr btxldr.s
sys/boot/i386/loader Makefile main.c
Added files:
sys/boot/i386/cdldr Makefile cdldr.s
Log:
Add the new cdldr CD bootstrap loader. This patch includes the following:
- Fix btxldr to preserve a NULL bootinfo pointer when it copies the kernel
arguments.
- Add the cdldr bootstrap program. This program is tacked onto the
beginning of the standard 3rd stage boot loader (/boot/loader) to form
the CD boot loader (/boot/cdboot). When a CD is booted, the cdboot file
is copied into memory instead and executed. The cdldr stub emulates the
environment normally provided by boot2 and then starts the loader. This
booting method does not emulate a floppy drive, but boots directly off of
the CD. This should fix the problems some BIOS's have with emulating a
2.88 MB floppy image.
- Add support to the loader to recognize that it has been booted by cdldr
instead of boot2 and use a simpler method of extracting the BIOS boot
device.
Revision Changes Path
1.11 +2 -2 src/sys/boot/i386/Makefile
1.8 +5 -3 src/sys/boot/i386/btx/btxldr/btxldr.s
1.38 +8 -2 src/sys/boot/i386/loader/Makefile
1.17 +10 -3 src/sys/boot/i386/loader/main.c
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