8e585f02f8
Added board/freescale/m5329evb, cpu/mcf532x, drivers/net, drivers/serial, immap_5329.h, m5329.h, mcfrtc.h, include/configs/M5329EVB.h, lib_m68k/interrupts.c, and rtc/mcfrtc.c Modified CREDITS, MAKEFILE, Makefile, README, common/cmd_bdinfo.c, common/cmd_mii.c, include/asm-m68k/byteorder.h, include/asm-m68k/fec.h, include/asm-m68k/io.h, include/asm-m68k/mcftimer.h, include/asm-m68k/mcfuart.h, include/asm-m68k/ptrace.h, include/asm-m68k/u-boot.h, lib_m68k/Makefile, lib_m68k/board.c, lib_m68k/time.c, net/eth.c and rtc/Makefile Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
/*
|
|
* (C) Copyright 2004, Freescale, Inc
|
|
* TsiChung Liew, Tsi-Chung.Liew@freescale.com.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Minimal serial functions needed to use one of the uart ports
|
|
* as serial console interface.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/mcfuart.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#ifdef CONFIG_MCFSERIAL
|
|
int serial_init(void)
|
|
{
|
|
volatile uart_t *uart;
|
|
u32 counter;
|
|
|
|
uart = (volatile uart_t *)(CFG_UART_BASE);
|
|
|
|
/* write to SICR: SIM2 = uart mode,dcd does not affect rx */
|
|
uart->ucr = UART_UCR_RESET_RX;
|
|
uart->ucr = UART_UCR_RESET_TX;
|
|
uart->ucr = UART_UCR_RESET_ERROR;
|
|
uart->ucr = UART_UCR_RESET_MR;
|
|
__asm__("nop");
|
|
|
|
uart->uimr = 0;
|
|
|
|
/* write to CSR: RX/TX baud rate from timers */
|
|
uart->ucsr = (UART_UCSR_RCS_SYS_CLK | UART_UCSR_TCS_SYS_CLK);
|
|
|
|
uart->umr = (UART_UMR_BC_8 | UART_UMR_PM_NONE);
|
|
uart->umr = UART_UMR_SB_STOP_BITS_1;
|
|
|
|
/* Setting up BaudRate */
|
|
counter = (u32) (gd->bus_clk / (gd->baudrate));
|
|
counter >>= 5;
|
|
|
|
/* write to CTUR: divide counter upper byte */
|
|
uart->ubg1 = (u8) ((counter & 0xff00) >> 8);
|
|
/* write to CTLR: divide counter lower byte */
|
|
uart->ubg2 = (u8) (counter & 0x00ff);
|
|
|
|
uart->ucr = (UART_UCR_RX_ENABLED | UART_UCR_TX_ENABLED);
|
|
|
|
return (0);
|
|
}
|
|
|
|
void serial_putc(const char c)
|
|
{
|
|
volatile uart_t *uart = (volatile uart_t *)(CFG_UART_BASE);
|
|
|
|
if (c == '\n')
|
|
serial_putc('\r');
|
|
|
|
/* Wait for last character to go. */
|
|
while (!(uart->usr & UART_USR_TXRDY)) ;
|
|
|
|
uart->utb = c;
|
|
}
|
|
|
|
void serial_puts(const char *s)
|
|
{
|
|
while (*s) {
|
|
serial_putc(*s++);
|
|
}
|
|
}
|
|
|
|
int serial_getc(void)
|
|
{
|
|
volatile uart_t *uart = (volatile uart_t *)(CFG_UART_BASE);
|
|
|
|
/* Wait for a character to arrive. */
|
|
while (!(uart->usr & UART_USR_RXRDY)) ;
|
|
return uart->urb;
|
|
}
|
|
|
|
int serial_tstc(void)
|
|
{
|
|
volatile uart_t *uart = (volatile uart_t *)(CFG_UART_BASE);
|
|
|
|
return (uart->usr & UART_USR_RXRDY);
|
|
}
|
|
|
|
void serial_setbrg(void)
|
|
{
|
|
volatile uart_t *uart = (volatile uart_t *)(CFG_UART_BASE);
|
|
u32 counter;
|
|
|
|
counter = ((gd->bus_clk / gd->baudrate)) >> 5;
|
|
counter++;
|
|
|
|
/* write to CTUR: divide counter upper byte */
|
|
uart->ubg1 = ((counter & 0xff00) >> 8);
|
|
/* write to CTLR: divide counter lower byte */
|
|
uart->ubg2 = (counter & 0x00ff);
|
|
|
|
uart->ucr = UART_UCR_RESET_RX;
|
|
uart->ucr = UART_UCR_RESET_TX;
|
|
|
|
uart->ucr = UART_UCR_RX_ENABLED | UART_UCR_TX_ENABLED;
|
|
}
|
|
#endif /* CONFIG_MCFSERIAL */
|