x86, setup: "glove box" BIOS calls -- infrastructure

Impact: new interfaces (not yet used)

For all the platforms out there, there is an infinite number of buggy
BIOSes.  This adds infrastructure to treat BIOS interrupts more like
toxic waste and "glove box" them -- we switch out the register set,
perform the BIOS interrupt, and then restore the previous state.

LKML-Reference: <49DE7F79.4030106@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index 6633b6e7505a..658bc525cac7 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -26,9 +26,10 @@ targets		:= vmlinux.bin setup.bin setup.elf bzImage
 targets         += fdimage fdimage144 fdimage288 image.iso mtools.conf
 subdir-         := compressed
 
-setup-y         += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
+setup-y         += a20.o bioscall.o cmdline.o copy.o cpu.o cpucheck.o edd.o
 setup-y         += header.o main.o mca.o memory.o pm.o pmjump.o
-setup-y         += printf.o string.o tty.o video.o video-mode.o version.o
+setup-y         += printf.o regs.o string.o tty.o video.o video-mode.o
+setup-y         += version.o
 setup-$(CONFIG_X86_APM_BOOT) += apm.o
 
 # The link order of the video-*.o modules can matter.  In particular,