67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* Copyright (C) 2012 Antony Pavlov <antonynpavlov@gmail.com>
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*
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* This file is part of barebox.
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* See file CREDITS for list of people who contributed to this project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <common.h>
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#include <types.h>
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#include <driver.h>
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#include <init.h>
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#include <ns16550.h>
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#include <mach/jz4750d_regs.h>
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#include <io.h>
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#include <asm/common.h>
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#define JZ4750D_UART_SHIFT 2
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#define ier (1 << JZ4750D_UART_SHIFT)
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#define fcr (2 << JZ4750D_UART_SHIFT)
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static void jz4750d_serial_reg_write(unsigned int val, unsigned long base,
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unsigned char reg_offset)
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{
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switch (reg_offset) {
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case fcr:
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val |= 0x10; /* Enable uart module */
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break;
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case ier:
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val |= (val & 0x4) << 2;
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break;
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default:
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break;
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}
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writeb(val & 0xff, (void *)(base + reg_offset));
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}
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static struct NS16550_plat serial_plat = {
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.clock = 12000000,
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.shift = JZ4750D_UART_SHIFT,
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.reg_write = &jz4750d_serial_reg_write,
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};
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static int rzx50_console_init(void)
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{
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/* Register the serial port */
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add_ns16550_device(-1, UART1_BASE, 8 << JZ4750D_UART_SHIFT,
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IORESOURCE_MEM_8BIT, &serial_plat);
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return 0;
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}
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console_initcall(rzx50_console_init);
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