diff options
Diffstat (limited to 'arch/ppc/boot/simple')
| -rw-r--r-- | arch/ppc/boot/simple/Makefile | 1 | ||||
| -rw-r--r-- | arch/ppc/boot/simple/uartlite_tty.c | 37 |
2 files changed, 38 insertions, 0 deletions
diff --git a/arch/ppc/boot/simple/Makefile b/arch/ppc/boot/simple/Makefile index bcfb6cde70c4..5b877792d14f 100644 --- a/arch/ppc/boot/simple/Makefile +++ b/arch/ppc/boot/simple/Makefile @@ -201,6 +201,7 @@ boot-$(CONFIG_8260) += m8260_tty.o endif boot-$(CONFIG_SERIAL_MPC52xx_CONSOLE) += mpc52xx_tty.o boot-$(CONFIG_SERIAL_MPSC_CONSOLE) += mv64x60_tty.o +boot-$(CONFIG_SERIAL_UARTLITE_CONSOLE) += uartlite_tty.o LIBS := $(common)/lib.a $(bootlib)/lib.a ifeq ($(CONFIG_PPC_PREP),y) diff --git a/arch/ppc/boot/simple/uartlite_tty.c b/arch/ppc/boot/simple/uartlite_tty.c new file mode 100644 index 000000000000..0eae1eab38d4 --- /dev/null +++ b/arch/ppc/boot/simple/uartlite_tty.c @@ -0,0 +1,37 @@ +/* + * Xilinx UARTLITE bootloader driver + * + * Copyright (c) 2007 Secret Lab Technologies Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/types.h> +#include <asm/serial.h> +#include <asm/io.h> +#include <platforms/4xx/xparameters/xparameters.h> + +#define UARTLITE_BASEADDR ((void*)(XPAR_UARTLITE_0_BASEADDR)) + +void +serial_putc(unsigned long com_port, unsigned char c) +{ + while ((in_be32(UARTLITE_BASEADDR + 0x8) & 0x08) != 0); /* spin */ + out_be32(UARTLITE_BASEADDR + 0x4, c); +} + +unsigned char +serial_getc(unsigned long com_port) +{ + while ((in_be32(UARTLITE_BASEADDR + 0x8) & 0x01) == 0); /* spin */ + return in_be32(UARTLITE_BASEADDR); +} + +int +serial_tstc(unsigned long com_port) +{ + return ((in_be32(UARTLITE_BASEADDR + 0x8) & 0x01) != 0); +} |