* ARM Ltd.
* Philippe Robin, <philippe.robin@arm.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
+ * SPDX-License-Identifier: GPL-2.0+
*/
/* Simple U-Boot driver for the PrimeCell PL010/PL011 UARTs */
#include <common.h>
#include <watchdog.h>
#include <asm/io.h>
+#include <serial.h>
+#include <linux/compiler.h>
#include "serial_pl01x.h"
/*
#ifdef CONFIG_PL010_SERIAL
-int serial_init (void)
+static int pl01x_serial_init(void)
{
struct pl01x_regs *regs = pl01x_get_regs(CONSOLE_PORT);
unsigned int divisor;
#ifdef CONFIG_PL011_SERIAL
-int serial_init (void)
+static int pl01x_serial_init(void)
{
struct pl01x_regs *regs = pl01x_get_regs(CONSOLE_PORT);
unsigned int temp;
writel(lcr, ®s->fr);
writel(lcr, ®s->pl011_rlcr);
+ /* lcrh needs to be set again for change to be effective */
+ writel(lcr, ®s->pl011_lcrh);
}
#endif
/* Finally, enable the UART */
- writel(UART_PL011_CR_UARTEN | UART_PL011_CR_TXE | UART_PL011_CR_RXE,
- ®s->pl011_cr);
+ writel(UART_PL011_CR_UARTEN | UART_PL011_CR_TXE | UART_PL011_CR_RXE |
+ UART_PL011_CR_RTS, ®s->pl011_cr);
return 0;
}
#endif /* CONFIG_PL011_SERIAL */
-void serial_putc (const char c)
+static void pl01x_serial_putc(const char c)
{
if (c == '\n')
pl01x_putc (CONSOLE_PORT, '\r');
pl01x_putc (CONSOLE_PORT, c);
}
-void serial_puts (const char *s)
-{
- while (*s) {
- serial_putc (*s++);
- }
-}
-
-int serial_getc (void)
+static int pl01x_serial_getc(void)
{
return pl01x_getc (CONSOLE_PORT);
}
-int serial_tstc (void)
+static int pl01x_serial_tstc(void)
{
return pl01x_tstc (CONSOLE_PORT);
}
-void serial_setbrg (void)
+static void pl01x_serial_setbrg(void)
{
+ struct pl01x_regs *regs = pl01x_get_regs(CONSOLE_PORT);
+
baudrate = gd->baudrate;
+ /*
+ * Flush FIFO and wait for non-busy before changing baudrate to avoid
+ * crap in console
+ */
+ while (!(readl(®s->fr) & UART_PL01x_FR_TXFE))
+ WATCHDOG_RESET();
+ while (readl(®s->fr) & UART_PL01x_FR_BUSY)
+ WATCHDOG_RESET();
serial_init();
}
WATCHDOG_RESET();
return !(readl(®s->fr) & UART_PL01x_FR_RXFE);
}
+
+static struct serial_device pl01x_serial_drv = {
+ .name = "pl01x_serial",
+ .start = pl01x_serial_init,
+ .stop = NULL,
+ .setbrg = pl01x_serial_setbrg,
+ .putc = pl01x_serial_putc,
+ .puts = default_serial_puts,
+ .getc = pl01x_serial_getc,
+ .tstc = pl01x_serial_tstc,
+};
+
+void pl01x_serial_initialize(void)
+{
+ serial_register(&pl01x_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+ return &pl01x_serial_drv;
+}