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Initialise remaining UART registers on Yeeloong

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-02-16 22:40:53 +01:00
parent 232f7e29c9
commit 1eb746f274
2 changed files with 17 additions and 4 deletions
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10
include/grub/serial.h
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@ -59,9 +59,15 @@
#define UART_DLAB 0x80
/* Enable the FIFO. */
#define UART_ENABLE_FIFO 0xC7
#define UART_ENABLE_FIFO_TRIGGER14 0xC7
/* Enable the FIFO. */
#define UART_ENABLE_FIFO_TRIGGER1 0x07
/* Turn on DTR, RTS, and OUT2. */
#define UART_ENABLE_MODEM 0x0B
#define UART_ENABLE_DTRRTS 0x03
/* Turn on DTR, RTS, and OUT2. */
#define UART_ENABLE_OUT2 0x08
#endif /* ! GRUB_SERIAL_MACHINE_HEADER */

11
term/serial.c
View file

@ -300,10 +300,17 @@ serial_hw_init (void)
/* In Yeeloong serial port has only 3 wires. */
#ifndef GRUB_MACHINE_MIPS_YEELOONG
/* Enable the FIFO. */
grub_outb (UART_ENABLE_FIFO, serial_settings.port + UART_FCR);
grub_outb (UART_ENABLE_FIFO_TRIGGER1, serial_settings.port + UART_FCR);
/* Turn on DTR and RTS. */
grub_outb (UART_ENABLE_DTRRTS, serial_settings.port + UART_MCR);
#else
/* Enable the FIFO. */
grub_outb (UART_ENABLE_FIFO_TRIGGER14, serial_settings.port + UART_FCR);
/* Turn on DTR, RTS, and OUT2. */
grub_outb (UART_ENABLE_MODEM, serial_settings.port + UART_MCR);
grub_outb (UART_ENABLE_DTRRTS | UART_ENABLE_OUT2,
serial_settings.port + UART_MCR);
#endif
/* Drain the input buffer. */