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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-21 15:19:41 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-21 15:19:41 +0200 |
| commit | 9701a97e3f68c2a5f0d887da31fef76199a90d1d (patch) | |
| tree | f20db2ab7ccf1102bac68679df5b2d6f43f8c0bf /linuxboot.c | |
| parent | b081143b378235706c45c8fa89f800f0df717380 (diff) | |
| download | qboot-9701a97e3f68c2a5f0d887da31fef76199a90d1d.zip qboot-9701a97e3f68c2a5f0d887da31fef76199a90d1d.tar.gz qboot-9701a97e3f68c2a5f0d887da31fef76199a90d1d.tar.bz2 | |
benchmarking hack
Diffstat (limited to 'linuxboot.c')
| -rw-r--r-- | linuxboot.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/linuxboot.c b/linuxboot.c index 7ce07bc..cc64811 100644 --- a/linuxboot.c +++ b/linuxboot.c @@ -1,5 +1,6 @@ #include "bios.h" #include "linuxboot.h" +#include "ioport.h" #include "string.h" #include "stdio.h" @@ -110,6 +111,12 @@ bool parse_bzimage(struct linuxboot_args *args) void boot_bzimage(struct linuxboot_args *args) { memcpy(args->setup_addr, args->header, sizeof(args->header)); +#ifdef BENCHMARK_HACK + /* Exit just before getting to vmlinuz, so that it is easy + * to time/profile the firmware. + */ + outb(0xf4, 1); +#endif asm volatile( "ljmp $0x18, $pm16_boot_linux - 0xf0000" : : |