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1ccea77e2a
Based on 2 normalized pattern(s): 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 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 [based] [from] [clk] [highbank] [c] you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 355 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2008-2010 Thomas Chou <thomas@wytron.com.tw>
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*/
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#include <linux/io.h>
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#if (defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE) && defined(JTAG_UART_BASE))\
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|| (defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE) && defined(UART0_BASE))
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static void *my_ioremap(unsigned long physaddr)
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{
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return (void *)(physaddr | CONFIG_NIOS2_IO_REGION_BASE);
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}
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#endif
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#if defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE) && defined(JTAG_UART_BASE)
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#define ALTERA_JTAGUART_SIZE 8
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#define ALTERA_JTAGUART_DATA_REG 0
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#define ALTERA_JTAGUART_CONTROL_REG 4
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#define ALTERA_JTAGUART_CONTROL_AC_MSK (0x00000400)
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#define ALTERA_JTAGUART_CONTROL_WSPACE_MSK (0xFFFF0000)
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static void *uartbase;
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#if defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS)
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static void jtag_putc(int ch)
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{
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if (readl(uartbase + ALTERA_JTAGUART_CONTROL_REG) &
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ALTERA_JTAGUART_CONTROL_WSPACE_MSK)
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writeb(ch, uartbase + ALTERA_JTAGUART_DATA_REG);
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}
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#else
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static void jtag_putc(int ch)
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{
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while ((readl(uartbase + ALTERA_JTAGUART_CONTROL_REG) &
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ALTERA_JTAGUART_CONTROL_WSPACE_MSK) == 0)
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;
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writeb(ch, uartbase + ALTERA_JTAGUART_DATA_REG);
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}
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#endif
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static int putchar(int ch)
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{
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jtag_putc(ch);
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return ch;
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}
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static void console_init(void)
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{
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uartbase = my_ioremap((unsigned long) JTAG_UART_BASE);
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writel(ALTERA_JTAGUART_CONTROL_AC_MSK,
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uartbase + ALTERA_JTAGUART_CONTROL_REG);
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}
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#elif defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE) && defined(UART0_BASE)
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#define ALTERA_UART_SIZE 32
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#define ALTERA_UART_TXDATA_REG 4
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#define ALTERA_UART_STATUS_REG 8
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#define ALTERA_UART_DIVISOR_REG 16
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#define ALTERA_UART_STATUS_TRDY_MSK (0x40)
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static unsigned uartbase;
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static void uart_putc(int ch)
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{
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int i;
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for (i = 0; (i < 0x10000); i++) {
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if (readw(uartbase + ALTERA_UART_STATUS_REG) &
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ALTERA_UART_STATUS_TRDY_MSK)
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break;
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}
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writeb(ch, uartbase + ALTERA_UART_TXDATA_REG);
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}
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static int putchar(int ch)
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{
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uart_putc(ch);
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if (ch == '\n')
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uart_putc('\r');
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return ch;
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}
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static void console_init(void)
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{
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unsigned int baud, baudclk;
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uartbase = (unsigned long) my_ioremap((unsigned long) UART0_BASE);
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baud = CONFIG_SERIAL_ALTERA_UART_BAUDRATE;
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baudclk = UART0_FREQ / baud;
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writew(baudclk, uartbase + ALTERA_UART_DIVISOR_REG);
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}
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#else
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static int putchar(int ch)
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{
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return ch;
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}
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static void console_init(void)
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{
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}
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#endif
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static int puts(const char *s)
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{
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while (*s)
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putchar(*s++);
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return 0;
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}
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