netarm: move serial driver to drivers/serial
add CONFIG_NETARM_SERIAL to activate the driver
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 8cac794..e76a2ad 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -35,6 +35,7 @@
COBJS-$(CONFIG_SYS_NS16550_SERIAL) += serial.o
COBJS-$(CONFIG_IXP_SERIAL) += serial_ixp.o
COBJS-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
+COBJS-$(CONFIG_NETARM_SERIAL) += serial_netarm.o
COBJS-$(CONFIG_PL010_SERIAL) += serial_pl01x.o
COBJS-$(CONFIG_PL011_SERIAL) += serial_pl01x.o
COBJS-$(CONFIG_SA1100_SERIAL) += serial_sa1100.o
diff --git a/drivers/serial/serial_netarm.c b/drivers/serial/serial_netarm.c
new file mode 100644
index 0000000..2eb5393
--- /dev/null
+++ b/drivers/serial/serial_netarm.c
@@ -0,0 +1,195 @@
+/*
+ * Serial Port stuff - taken from Linux
+ *
+ * (C) Copyright 2002
+ * MAZeT GmbH <www.mazet.de>
+ * Stephan Linz <linz@mazet.de>, <linz@li-pro.net>
+ *
+ * (c) 2004
+ * IMMS gGmbH <www.imms.de>
+ * Thomas Elste <info@elste.org>
+ *
+ * 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 <asm/hardware.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define PORTA (*(volatile unsigned int *)(NETARM_GEN_MODULE_BASE + NETARM_GEN_PORTA))
+#if !defined(CONFIG_NETARM_NS7520)
+#define PORTB (*(volatile unsigned int *)(NETARM_GEN_MODULE_BASE + NETARM_GEN_PORTB))
+#else
+#define PORTC (*(volatile unsigned int *)(NETARM_GEN_MODULE_BASE + NETARM_GEN_PORTC))
+#endif
+
+/* wait until transmitter is ready for another character */
+#define TXWAITRDY(registers) \
+{ \
+ ulong tmo = get_timer(0) + 1 * CONFIG_SYS_HZ; \
+ while (((registers)->status_a & NETARM_SER_STATA_TX_RDY) == 0 ) { \
+ if (get_timer(0) > tmo) \
+ break; \
+ } \
+}
+
+
+#ifndef CONFIG_UART1_CONSOLE
+volatile netarm_serial_channel_t *serial_reg_ch1 = get_serial_channel(0);
+volatile netarm_serial_channel_t *serial_reg_ch2 = get_serial_channel(1);
+#else
+volatile netarm_serial_channel_t *serial_reg_ch1 = get_serial_channel(1);
+volatile netarm_serial_channel_t *serial_reg_ch2 = get_serial_channel(0);
+#endif
+
+extern void _netarm_led_FAIL1(void);
+
+/*
+ * Setup both serial i/f with given baudrate
+ */
+void serial_setbrg (void)
+{
+ /* set 0 ... make sure pins are configured for serial */
+#if !defined(CONFIG_NETARM_NS7520)
+ PORTA = PORTB =
+ NETARM_GEN_PORT_MODE (0xef) | NETARM_GEN_PORT_DIR (0xe0);
+#else
+ PORTA = NETARM_GEN_PORT_MODE (0xef) | NETARM_GEN_PORT_DIR (0xe0);
+ PORTC = NETARM_GEN_PORT_CSF (0xef) | NETARM_GEN_PORT_MODE (0xef) | NETARM_GEN_PORT_DIR (0xe0);
+#endif
+
+ /* first turn em off */
+ serial_reg_ch1->ctrl_a = serial_reg_ch2->ctrl_a = 0;
+
+ /* clear match register, we don't need it */
+ serial_reg_ch1->rx_match = serial_reg_ch2->rx_match = 0;
+
+ /* setup bit rate generator and rx buffer gap timer (1 byte only) */
+ if ((gd->baudrate >= MIN_BAUD_RATE)
+ && (gd->baudrate <= MAX_BAUD_RATE)) {
+ serial_reg_ch1->bitrate = serial_reg_ch2->bitrate =
+ NETARM_SER_BR_X16 (gd->baudrate);
+ serial_reg_ch1->rx_buf_timer = serial_reg_ch2->rx_buf_timer =
+ 0;
+ serial_reg_ch1->rx_char_timer = serial_reg_ch2->rx_char_timer =
+ NETARM_SER_RXGAP (gd->baudrate);
+ } else {
+ hang ();
+ }
+
+ /* setup port mode */
+ serial_reg_ch1->ctrl_b = serial_reg_ch2->ctrl_b =
+ ( NETARM_SER_CTLB_RCGT_EN |
+ NETARM_SER_CTLB_UART_MODE);
+ serial_reg_ch1->ctrl_a = serial_reg_ch2->ctrl_a =
+ ( NETARM_SER_CTLA_ENABLE |
+ NETARM_SER_CTLA_P_NONE |
+ /* see errata */
+ NETARM_SER_CTLA_2STOP |
+ NETARM_SER_CTLA_8BITS |
+ NETARM_SER_CTLA_DTR_EN |
+ NETARM_SER_CTLA_RTS_EN);
+}
+
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ */
+int serial_init (void)
+{
+ serial_setbrg ();
+ return 0;
+}
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+void serial_putc (const char c)
+{
+ volatile unsigned char *fifo;
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc ('\r');
+
+ fifo = (volatile unsigned char *) &(serial_reg_ch1->fifo);
+ TXWAITRDY (serial_reg_ch1);
+ *fifo = c;
+}
+
+/*
+ * Test of a single byte from the serial port. Returns 1 on success, 0
+ * otherwise.
+ */
+int serial_tstc(void)
+{
+ return serial_reg_ch1->status_a & NETARM_SER_STATA_RX_RDY;
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise.
+ */
+int serial_getc (void)
+{
+ unsigned int ch_uint;
+ volatile unsigned int *fifo;
+ volatile unsigned char *fifo_char = NULL;
+ int buf_count = 0;
+
+ while (!(serial_reg_ch1->status_a & NETARM_SER_STATA_RX_RDY))
+ /* NOP */ ;
+
+ fifo = (volatile unsigned int *) &(serial_reg_ch1->fifo);
+ fifo_char = (unsigned char *) &ch_uint;
+ ch_uint = *fifo;
+
+ buf_count = NETARM_SER_STATA_RXFDB (serial_reg_ch1->status_a);
+ switch (buf_count) {
+ case NETARM_SER_STATA_RXFDB_4BYTES:
+ buf_count = 4;
+ break;
+ case NETARM_SER_STATA_RXFDB_3BYTES:
+ buf_count = 3;
+ break;
+ case NETARM_SER_STATA_RXFDB_2BYTES:
+ buf_count = 2;
+ break;
+ case NETARM_SER_STATA_RXFDB_1BYTES:
+ buf_count = 1;
+ break;
+ default:
+ /* panic, be never here */
+ break;
+ }
+
+ serial_reg_ch1->status_a |= NETARM_SER_STATA_RX_CLOSED;
+
+ return ch_uint & 0xff;
+}
+
+void serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}