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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/nios2/boot/compressed/console.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/nios2/boot/compressed/console.c')
-rw-r--r-- | kernel/arch/nios2/boot/compressed/console.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/kernel/arch/nios2/boot/compressed/console.c b/kernel/arch/nios2/boot/compressed/console.c new file mode 100644 index 000000000..2675e879b --- /dev/null +++ b/kernel/arch/nios2/boot/compressed/console.c @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2008-2010 Thomas Chou <thomas@wytron.com.tw> + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#include <linux/io.h> + +#if (defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE) && defined(JTAG_UART_BASE))\ + || (defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE) && defined(UART0_BASE)) +static void *my_ioremap(unsigned long physaddr) +{ + return (void *)(physaddr | CONFIG_NIOS2_IO_REGION_BASE); +} +#endif + +#if defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE) && defined(JTAG_UART_BASE) + +#define ALTERA_JTAGUART_SIZE 8 +#define ALTERA_JTAGUART_DATA_REG 0 +#define ALTERA_JTAGUART_CONTROL_REG 4 +#define ALTERA_JTAGUART_CONTROL_AC_MSK (0x00000400) +#define ALTERA_JTAGUART_CONTROL_WSPACE_MSK (0xFFFF0000) +static void *uartbase; + +#if defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS) +static void jtag_putc(int ch) +{ + if (readl(uartbase + ALTERA_JTAGUART_CONTROL_REG) & + ALTERA_JTAGUART_CONTROL_WSPACE_MSK) + writeb(ch, uartbase + ALTERA_JTAGUART_DATA_REG); +} +#else +static void jtag_putc(int ch) +{ + while ((readl(uartbase + ALTERA_JTAGUART_CONTROL_REG) & + ALTERA_JTAGUART_CONTROL_WSPACE_MSK) == 0) + ; + writeb(ch, uartbase + ALTERA_JTAGUART_DATA_REG); +} +#endif + +static int putchar(int ch) +{ + jtag_putc(ch); + return ch; +} + +static void console_init(void) +{ + uartbase = my_ioremap((unsigned long) JTAG_UART_BASE); + writel(ALTERA_JTAGUART_CONTROL_AC_MSK, + uartbase + ALTERA_JTAGUART_CONTROL_REG); +} + +#elif defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE) && defined(UART0_BASE) + +#define ALTERA_UART_SIZE 32 +#define ALTERA_UART_TXDATA_REG 4 +#define ALTERA_UART_STATUS_REG 8 +#define ALTERA_UART_DIVISOR_REG 16 +#define ALTERA_UART_STATUS_TRDY_MSK (0x40) +static unsigned uartbase; + +static void uart_putc(int ch) +{ + int i; + + for (i = 0; (i < 0x10000); i++) { + if (readw(uartbase + ALTERA_UART_STATUS_REG) & + ALTERA_UART_STATUS_TRDY_MSK) + break; + } + writeb(ch, uartbase + ALTERA_UART_TXDATA_REG); +} + +static int putchar(int ch) +{ + uart_putc(ch); + if (ch == '\n') + uart_putc('\r'); + return ch; +} + +static void console_init(void) +{ + unsigned int baud, baudclk; + + uartbase = (unsigned long) my_ioremap((unsigned long) UART0_BASE); + baud = CONFIG_SERIAL_ALTERA_UART_BAUDRATE; + baudclk = UART0_FREQ / baud; + writew(baudclk, uartbase + ALTERA_UART_DIVISOR_REG); +} + +#else + +static int putchar(int ch) +{ + return ch; +} + +static void console_init(void) +{ +} + +#endif + +static int puts(const char *s) +{ + while (*s) + putchar(*s++); + return 0; +} |