1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001, 2002 Ralf Baechle
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*/
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <linux/termios.h>
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#include <linux/sched.h>
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#include <linux/tty.h>
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#include <asm/page.h>
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#include <asm/semaphore.h>
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#include <asm/sn/addrs.h>
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#include <asm/sn/sn0/hub.h>
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#include <asm/sn/klconfig.h>
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#include <asm/sn/ioc3.h>
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#include <asm/sn/sn_private.h>
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#include <linux/serial.h>
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#include <linux/serial_core.h>
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#define IOC3_CLK (22000000 / 3)
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#define IOC3_FLAGS (0)
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static inline struct ioc3_uartregs *console_uart(void)
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{
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struct ioc3 *ioc3;
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ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(get_nasid())->memory_base;
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return &ioc3->sregs.uarta;
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}
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void prom_putchar(char c)
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{
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struct ioc3_uartregs *uart = console_uart();
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while ((uart->iu_lsr & 0x20) == 0);
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uart->iu_thr = c;
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}
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char __init prom_getchar(void)
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{
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return 0;
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}
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static void inline ioc3_console_probe(void)
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{
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struct uart_port up;
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/*
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* Register to interrupt zero because we share the interrupt with
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* the serial driver which we don't properly support yet.
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*/
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memset(&up, 0, sizeof(up));
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up.membase = (unsigned char *) console_uart();
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up.irq = 0;
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up.uartclk = IOC3_CLK;
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up.regshift = 0;
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up.iotype = UPIO_MEM;
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up.flags = IOC3_FLAGS;
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up.line = 0;
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if (early_serial_setup(&up))
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printk(KERN_ERR "Early serial init of port 0 failed\n");
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}
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__init void ip27_setup_console(void)
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{
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ioc3_console_probe();
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}
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