upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
1.9 KiB
78 lines
1.9 KiB
/*
|
|
* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
|
|
* Scott McNutt <smcnutt@psyent.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
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <watchdog.h>
|
|
#include <asm/io.h>
|
|
#include <nios2-io.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/*------------------------------------------------------------------
|
|
* JTAG acts as the serial port
|
|
*-----------------------------------------------------------------*/
|
|
static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE;
|
|
|
|
void serial_setbrg( void ){ return; }
|
|
int serial_init( void ) { return(0);}
|
|
|
|
void serial_putc (char c)
|
|
{
|
|
while (1) {
|
|
unsigned st = readl(&jtag->control);
|
|
if (NIOS_JTAG_WSPACE(st))
|
|
break;
|
|
#ifdef CONFIG_ALTERA_JTAG_UART_BYPASS
|
|
if (!(st & NIOS_JTAG_AC)) /* no connection */
|
|
return;
|
|
#endif
|
|
WATCHDOG_RESET();
|
|
}
|
|
writel ((unsigned char)c, &jtag->data);
|
|
}
|
|
|
|
void serial_puts (const char *s)
|
|
{
|
|
while (*s != 0)
|
|
serial_putc (*s++);
|
|
}
|
|
|
|
int serial_tstc (void)
|
|
{
|
|
return ( readl (&jtag->control) & NIOS_JTAG_RRDY);
|
|
}
|
|
|
|
int serial_getc (void)
|
|
{
|
|
int c;
|
|
unsigned val;
|
|
|
|
while (1) {
|
|
WATCHDOG_RESET ();
|
|
val = readl (&jtag->data);
|
|
if (val & NIOS_JTAG_RVALID)
|
|
break;
|
|
}
|
|
c = val & 0x0ff;
|
|
return (c);
|
|
}
|
|
|