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| author | Stefano Garzarella <sgarzare@redhat.com> | 2018-12-02 14:10:13 +0100 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2018-12-10 22:03:30 -0500 |
| commit | 75b42835134553c96f113e5014072c0caf99d092 (patch) | |
| tree | a22ca8b72057f3dc489c1653eca093c42304f498 /src/hw/serialio.h | |
| parent | 628b2e6b0e390e26d59b3c5db07a4226175b6f8a (diff) | |
| download | seabios-75b42835134553c96f113e5014072c0caf99d092.tar.gz | |
qemu: avoid debug prints if debugcon is not enabled
In order to speed up the boot phase, we can check the QEMU
debugcon device, and disable the writes if it is not recognized.
This patch allow us to save around 10 msec (time measured
between SeaBIOS entry point and "linuxboot" entry point)
when CONFIG_DEBUG_LEVEL=1 and debugcon is not enabled.
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'src/hw/serialio.h')
| -rw-r--r-- | src/hw/serialio.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/hw/serialio.h b/src/hw/serialio.h index 88296fe7..81fed306 100644 --- a/src/hw/serialio.h +++ b/src/hw/serialio.h @@ -24,6 +24,7 @@ void serial_debug_preinit(void); void serial_debug_putc(char c); void serial_debug_flush(void); extern u16 DebugOutputPort; +void qemu_debug_preinit(void); void qemu_debug_putc(char c); #endif // serialio.h |