diff options
Diffstat (limited to 'kernel/arch/mips/sgi-ip27/ip27-console.c')
| -rw-r--r-- | kernel/arch/mips/sgi-ip27/ip27-console.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/kernel/arch/mips/sgi-ip27/ip27-console.c b/kernel/arch/mips/sgi-ip27/ip27-console.c new file mode 100644 index 000000000..45fdfbcbd --- /dev/null +++ b/kernel/arch/mips/sgi-ip27/ip27-console.c @@ -0,0 +1,39 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001, 2002 Ralf Baechle + */ + +#include <asm/page.h> +#include <asm/sn/addrs.h> +#include <asm/sn/sn0/hub.h> +#include <asm/sn/klconfig.h> +#include <asm/sn/ioc3.h> +#include <asm/sn/sn_private.h> + +#include <linux/serial.h> +#include <linux/serial_core.h> + +#define IOC3_CLK (22000000 / 3) +#define IOC3_FLAGS (0) + +static inline struct ioc3_uartregs *console_uart(void) +{ + struct ioc3 *ioc3; + nasid_t nasid; + + nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid; + ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base; + + return &ioc3->sregs.uarta; +} + +void prom_putchar(char c) +{ + struct ioc3_uartregs *uart = console_uart(); + + while ((uart->iu_lsr & 0x20) == 0); + uart->iu_thr = c; +} |