summaryrefslogtreecommitdiff
path: root/drivers/serial
diff options
context:
space:
mode:
authorTsiChung Liew <Tsi-Chung.Liew@freescale.com>2007-06-18 13:50:13 -0500
committerJohn Rigby <jrigby@freescale.com>2007-06-18 15:17:56 -0600
commit8e585f02f82c17cc66cd229dbf0fd3066bbbf658 (patch)
tree9483ff1f96ab9208eeac92101a5c6db855fcd2ee /drivers/serial
parent9912121f7ed804ea58fd62f3f230b5dcfc357d88 (diff)
Added M5329AFEE and M5329BFEE Platforms
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>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/Makefile45
-rw-r--r--drivers/serial/mcfserial.c126
2 files changed, 171 insertions, 0 deletions
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
new file mode 100644
index 0000000000..2208a08a71
--- /dev/null
+++ b/drivers/serial/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB := $(obj)libserial.a
+
+COBJS := mcfserial.o
+
+SRCS := $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+
+all: $(LIB)
+
+$(LIB): $(obj).depend $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/drivers/serial/mcfserial.c b/drivers/serial/mcfserial.c
new file mode 100644
index 0000000000..a8ca78ad8c
--- /dev/null
+++ b/drivers/serial/mcfserial.c
@@ -0,0 +1,126 @@
+/*
+ * (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 */