/*
* Copyright 2010, Renato Andreola <renato.andreola@imagos.it>
*
- * 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <watchdog.h>
#include <asm/io.h>
#include <nios2-yanu.h>
+#include <serial.h>
DECLARE_GLOBAL_DATA_PTR;
static yanu_uart_t *uart = (yanu_uart_t *)CONFIG_SYS_NIOS_CONSOLE;
-#if defined(CONFIG_SYS_NIOS_FIXEDBAUD)
-
-/* Everything's already setup for fixed-baud PTF assignment*/
-
static void oc_serial_setbrg(void)
{
int n, k;
const unsigned max_uns = 0xFFFFFFFF;
unsigned best_n, best_m, baud;
+ unsigned baudrate;
- /* compute best N and M couple */
- best_n = YANU_MAX_PRESCALER_N;
- for (n = YANU_MAX_PRESCALER_N; n >= 0; n--) {
- if ((unsigned)CONFIG_SYS_CLK_FREQ / (1 << (n + 4)) >=
- (unsigned)CONFIG_BAUDRATE) {
- best_n = n;
- break;
- }
- }
- for (k = 0;; k++) {
- if ((unsigned)CONFIG_BAUDRATE <= (max_uns >> (15+n-k)))
- break;
- }
- best_m =
- ((unsigned)CONFIG_BAUDRATE * (1 << (15 + n - k))) /
- ((unsigned)CONFIG_SYS_CLK_FREQ >> k);
-
- baud = best_m + best_n * YANU_BAUDE;
- writel(baud, &uart->baud);
-
- return;
-}
-
+#if defined(CONFIG_SYS_NIOS_FIXEDBAUD)
+ /* Everything's already setup for fixed-baud PTF assignment */
+ baudrate = CONFIG_BAUDRATE;
#else
-
-static void oc_serial_setbrg(void)
-{
- int n, k;
- const unsigned max_uns = 0xFFFFFFFF;
- unsigned best_n, best_m, baud;
-
+ baudrate = gd->baudrate;
+#endif
/* compute best N and M couple */
best_n = YANU_MAX_PRESCALER_N;
for (n = YANU_MAX_PRESCALER_N; n >= 0; n--) {
if ((unsigned)CONFIG_SYS_CLK_FREQ / (1 << (n + 4)) >=
- gd->baudrate) {
+ baudrate) {
best_n = n;
break;
}
}
for (k = 0;; k++) {
- if (gd->baudrate <= (max_uns >> (15+n-k)))
+ if (baudrate <= (max_uns >> (15+n-k)))
break;
}
best_m =
- (gd->baudrate * (1 << (15 + n - k))) /
+ (baudrate * (1 << (15 + n - k))) /
((unsigned)CONFIG_SYS_CLK_FREQ >> k);
baud = best_m + best_n * YANU_BAUDE;
return;
}
-
-#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */
-
static int oc_serial_init(void)
{
unsigned action,control;
writel((unsigned char)c, &uart->data);
}
-static void oc_serial_puts(const char *s)
-{
- while (*s != 0) {
- serial_putc (*s++);
- }
-}
-
-
static int oc_serial_tstc(void)
{
unsigned status ;
((1 << YANU_RFIFO_CHARS_N) - 1)) > 0);
}
-statoc int oc_serial_getc(void)
+static int oc_serial_getc(void)
{
while (serial_tstc() == 0)
WATCHDOG_RESET ();
.stop = NULL,
.setbrg = oc_serial_setbrg,
.putc = oc_serial_putc,
- .puts = oc_serial_puts,
+ .puts = default_serial_puts,
.getc = oc_serial_getc,
.tstc = oc_serial_tstc,
};