a68555f48d
The previous code does a full flush of the uart after every character. Unfortunately, this can cause transmission delays on some serial ports. This patch changes the code so that it does a flush at the end of every printk instead of at the end of every character. This reduces the time it takes to transmit serial messages (up to 9% on my Asrock e350m1 board). It also makes the transmission time more consistent which is important when performing timing tests via serial transmissions. Change-Id: I6b28488b905da68c6d68d7c517cc743cde567d70 Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Reviewed-on: http://review.coreboot.org/90 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins) Reviewed-by: Rudolf Marek <r.marek@assembler.cz> Reviewed-by: Sven Schnelle <svens@stackframe.org> |
||
|---|---|---|
| .. | ||
| c_start.S | ||
| cbfs_and_run.c | ||
| cpu.c | ||
| exception.c | ||
| id.inc | ||
| id.lds | ||
| ioapic.c | ||
| Makefile.inc | ||
| pci_ops_auto.c | ||
| pci_ops_conf1.c | ||
| pci_ops_conf2.c | ||
| pci_ops_mmconf.c | ||
| romcc_console.c | ||
| romstage_console.c | ||
| stages.c | ||
| walkcbfs.S | ||