diff options
Diffstat (limited to 'arch/sh/kernel/early_printk.c')
| -rw-r--r-- | arch/sh/kernel/early_printk.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/arch/sh/kernel/early_printk.c b/arch/sh/kernel/early_printk.c deleted file mode 100644 index a00022722e9..00000000000 --- a/arch/sh/kernel/early_printk.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - * arch/sh/kernel/early_printk.c - * - * Copyright (C) 1999, 2000 Niibe Yutaka - * Copyright (C) 2002 M. R. Brown - * Copyright (C) 2004 - 2006 Paul Mundt - * - * 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. - */ -#include <linux/console.h> -#include <linux/tty.h> -#include <linux/init.h> -#include <asm/io.h> - -#ifdef CONFIG_SH_STANDARD_BIOS -#include <asm/sh_bios.h> - -/* - * Print a string through the BIOS - */ -static void sh_console_write(struct console *co, const char *s, - unsigned count) -{ - sh_bios_console_write(s, count); -} - -/* - * Setup initial baud/bits/parity. We do two things here: - * - construct a cflag setting for the first rs_open() - * - initialize the serial port - * Return non-zero if we didn't find a serial port. - */ -static int __init sh_console_setup(struct console *co, char *options) -{ - int cflag = CREAD | HUPCL | CLOCAL; - - /* - * Now construct a cflag setting. - * TODO: this is a totally bogus cflag, as we have - * no idea what serial settings the BIOS is using, or - * even if its using the serial port at all. - */ - cflag |= B115200 | CS8 | /*no parity*/0; - - co->cflag = cflag; - - return 0; -} - -static struct console bios_console = { - .name = "bios", - .write = sh_console_write, - .setup = sh_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, -}; -#endif - -#ifdef CONFIG_EARLY_SCIF_CONSOLE -#include <linux/serial_core.h> -#include "../../../drivers/serial/sh-sci.h" - -#ifdef CONFIG_CPU_SH4 -#define SCIF_REG 0xffe80000 -#elif defined(CONFIG_CPU_SUBTYPE_SH72060) -#define SCIF_REG 0xfffe9800 -#else -#error "Undefined SCIF for this subtype" -#endif - -static struct uart_port scif_port = { - .mapbase = SCIF_REG, - .membase = (char __iomem *)SCIF_REG, -}; - -static void scif_sercon_putc(int c) -{ - while (((sci_in(&scif_port, SCFDR) & 0x1f00 >> 8) == 16)) - ; - - sci_out(&scif_port, SCxTDR, c); - sci_in(&scif_port, SCxSR); - sci_out(&scif_port, SCxSR, 0xf3 & ~(0x20 | 0x40)); - - while ((sci_in(&scif_port, SCxSR) & 0x40) == 0); - ; - - if (c == '\n') - scif_sercon_putc('\r'); -} - -static void scif_sercon_write(struct console *con, const char *s, - unsigned count) -{ - while (count-- > 0) - scif_sercon_putc(*s++); -} - -static int __init scif_sercon_setup(struct console *con, char *options) -{ - con->cflag = CREAD | HUPCL | CLOCAL | B115200 | CS8; - - return 0; -} - -static struct console scif_console = { - .name = "sercon", - .write = scif_sercon_write, - .setup = scif_sercon_setup, - .flags = CON_PRINTBUFFER, - .index = -1, -}; - -static void scif_sercon_init(int baud) -{ - ctrl_outw(0, SCIF_REG + 8); - ctrl_outw(0, SCIF_REG); - - /* Set baud rate */ - ctrl_outb((CONFIG_SH_PCLK_FREQ + 16 * baud) / - (32 * baud) - 1, SCIF_REG + 4); - - ctrl_outw(12, SCIF_REG + 24); - ctrl_outw(8, SCIF_REG + 24); - ctrl_outw(0, SCIF_REG + 32); - ctrl_outw(0x60, SCIF_REG + 16); - ctrl_outw(0, SCIF_REG + 36); - ctrl_outw(0x30, SCIF_REG + 8); -} -#endif - -/* - * Setup a default console, if more than one is compiled in, rely on the - * earlyprintk= parsing to give priority. - */ -static struct console *early_console = -#ifdef CONFIG_SH_STANDARD_BIOS - &bios_console -#elif defined(CONFIG_EARLY_SCIF_CONSOLE) - &scif_console -#else - NULL -#endif - ; - -static int __initdata keep_early; - -int __init setup_early_printk(char *opt) -{ - char *space; - char buf[256]; - - strlcpy(buf, opt, sizeof(buf)); - space = strchr(buf, ' '); - if (space) - *space = 0; - - if (strstr(buf, "keep")) - keep_early = 1; - -#ifdef CONFIG_SH_STANDARD_BIOS - if (!strncmp(buf, "bios", 4)) - early_console = &bios_console; -#endif -#if defined(CONFIG_EARLY_SCIF_CONSOLE) - if (!strncmp(buf, "serial", 6)) { - early_console = &scif_console; - -#ifdef CONFIG_CPU_SH4 - scif_sercon_init(115200); -#endif - } -#endif - - if (likely(early_console)) - register_console(early_console); - - return 1; -} -__setup("earlyprintk=", setup_early_printk); - -void __init disable_early_printk(void) -{ - if (!keep_early) { - printk("disabling early console\n"); - unregister_console(early_console); - } else - printk("keeping early console\n"); -} |