summaryrefslogtreecommitdiff
path: root/board
diff options
context:
space:
mode:
authorwdenk <wdenk>2002-08-06 19:52:25 +0000
committerwdenk <wdenk>2002-08-06 19:52:25 +0000
commit71fc6c551dc7951576f636a8594d623c0cb48938 (patch)
tree500f54bbb06708233d8dcfc7cc6fc23662cb577d /board
parent4483b581da32b6165b6d844e2086d84355402295 (diff)
downloadu-boot-imx-71fc6c551dc7951576f636a8594d623c0cb48938.zip
u-boot-imx-71fc6c551dc7951576f636a8594d623c0cb48938.tar.gz
u-boot-imx-71fc6c551dc7951576f636a8594d623c0cb48938.tar.bz2
Initial revision
Diffstat (limited to 'board')
-rw-r--r--board/bmw/m48t59y.h57
-rw-r--r--board/bmw/ns16550.c60
-rw-r--r--board/bmw/ns16550.h81
3 files changed, 198 insertions, 0 deletions
diff --git a/board/bmw/m48t59y.h b/board/bmw/m48t59y.h
new file mode 100644
index 0000000..717300d
--- /dev/null
+++ b/board/bmw/m48t59y.h
@@ -0,0 +1,57 @@
+/*
+ * SGS M48-T59Y TOD/NVRAM Driver
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 1999, by Curt McDowell, 08-06-99, Broadcom Corp.
+ *
+ * (C) Copyright 2001, James Dougherty, 07/18/01, Broadcom Corp.
+ *
+ * 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
+ */
+
+#ifndef __M48_T59_Y_H
+#define __M48_T59_Y_H
+
+/*
+ * M48 T59Y -Timekeeping Battery backed SRAM.
+ */
+
+int m48_tod_init(void);
+
+int m48_tod_set(int year,
+ int month,
+ int day,
+ int hour,
+ int minute,
+ int second);
+
+int m48_tod_get(int *year,
+ int *month,
+ int *day,
+ int *hour,
+ int *minute,
+ int *second);
+
+int m48_tod_get_second(void);
+
+void m48_watchdog_arm(int usec);
+
+#endif /*!__M48_T59_Y_H */
diff --git a/board/bmw/ns16550.c b/board/bmw/ns16550.c
new file mode 100644
index 0000000..b6b6f4c
--- /dev/null
+++ b/board/bmw/ns16550.c
@@ -0,0 +1,60 @@
+/*
+ * COM1 NS16550 support
+ * originally from linux source (arch/ppc/boot/ns16550.c)
+ * modified to use CFG_ISA_MEM and new defines
+ */
+
+#include <config.h>
+#include "ns16550.h"
+
+typedef struct NS16550 *NS16550_t;
+
+const NS16550_t COM_PORTS[] = { (NS16550_t) ((CFG_EUMB_ADDR) + 0x4500), (NS16550_t) ((CFG_EUMB_ADDR) + 0x4600)};
+
+volatile struct NS16550 *
+NS16550_init(int chan, int baud_divisor)
+{
+ volatile struct NS16550 *com_port;
+ com_port = (struct NS16550 *) COM_PORTS[chan];
+ com_port->ier = 0x00;
+ com_port->lcr = LCR_BKSE; /* Access baud rate */
+ com_port->dll = baud_divisor & 0xff; /* 9600 baud */
+ com_port->dlm = (baud_divisor >> 8) & 0xff;
+ com_port->lcr = LCR_8N1; /* 8 data, 1 stop, no parity */
+ com_port->mcr = MCR_RTS; /* RTS/DTR */
+ com_port->fcr = FCR_FIFO_EN | FCR_RXSR | FCR_TXSR; /* Clear & enable FIFOs */
+return (com_port);
+}
+
+void
+NS16550_reinit(volatile struct NS16550 *com_port, int baud_divisor)
+{
+ com_port->ier = 0x00;
+ com_port->lcr = LCR_BKSE; /* Access baud rate */
+ com_port->dll = baud_divisor & 0xff; /* 9600 baud */
+ com_port->dlm = (baud_divisor >> 8) & 0xff;
+ com_port->lcr = LCR_8N1; /* 8 data, 1 stop, no parity */
+ com_port->mcr = MCR_RTS; /* RTS/DTR */
+ com_port->fcr = FCR_FIFO_EN | FCR_RXSR | FCR_TXSR; /* Clear & enable FIFOs */
+}
+
+void NS16550_putc(volatile struct NS16550 *com_port, unsigned char c)
+{
+ while ((com_port->lsr & LSR_THRE) == 0) ;
+ com_port->thr = c;
+}
+
+unsigned char
+NS16550_getc(volatile struct NS16550 *com_port)
+{
+ while ((com_port->lsr & LSR_DR) == 0) ;
+ return (com_port->rbr);
+}
+
+int NS16550_tstc(volatile struct NS16550 *com_port)
+{
+ return ((com_port->lsr & LSR_DR) != 0);
+}
+
+
+
diff --git a/board/bmw/ns16550.h b/board/bmw/ns16550.h
new file mode 100644
index 0000000..b80ac02
--- /dev/null
+++ b/board/bmw/ns16550.h
@@ -0,0 +1,81 @@
+/*
+ * NS16550 Serial Port
+ * originally from linux source (arch/ppc/boot/ns16550.h)
+ * modified slightly to
+ * have addresses as offsets from CFG_ISA_BASE
+ * added a few more definitions
+ * added prototypes for ns16550.c
+ * reduced no of com ports to 2
+ * modifications (c) Rob Taylor, Flying Pig Systems. 2000.
+ * further modified to support the 8245 duart
+ * modifications (c) Paul Jimenez, Musenki, Inc. 2001.
+ */
+
+
+struct NS16550
+ {
+ unsigned char rbrthrdlb; /* 0 */
+ unsigned char ierdmb; /* 1 */
+ unsigned char iirfcrafr; /* 2 */
+ unsigned char lcr; /* 3 */
+ unsigned char mcr; /* 4 */
+ unsigned char lsr; /* 5 */
+ unsigned char msr; /* 6 */
+ unsigned char scr; /* 7 */
+ unsigned char reserved[2]; /* 8 & 9 */
+ unsigned char dsr; /* 10 */
+ unsigned char dcr; /* 11 */
+ };
+
+
+#define rbr rbrthrdlb
+#define thr rbrthrdlb
+#define dll rbrthrdlb
+#define ier ierdmb
+#define dlm ierdmb
+#define iir iirfcrafr
+#define fcr iirfcrafr
+#define afr iirfcrafr
+
+#define FCR_FIFO_EN 0x01 /*fifo enable*/
+#define FCR_RXSR 0x02 /*reciever soft reset*/
+#define FCR_TXSR 0x04 /*transmitter soft reset*/
+#define FCR_DMS 0x08 /* DMA Mode Select */
+
+#define MCR_RTS 0x02 /* Readyu to Send */
+#define MCR_LOOP 0x10 /* Local loopback mode enable */
+/* #define MCR_DTR 0x01 noton 8245 duart */
+/* #define MCR_DMA_EN 0x04 noton 8245 duart */
+/* #define MCR_TX_DFR 0x08 noton 8245 duart */
+
+#define LCR_WLS_MSK 0x03 /* character length slect mask*/
+#define LCR_WLS_5 0x00 /* 5 bit character length */
+#define LCR_WLS_6 0x01 /* 6 bit character length */
+#define LCR_WLS_7 0x02 /* 7 bit character length */
+#define LCR_WLS_8 0x03 /* 8 bit character length */
+#define LCR_STB 0x04 /* Number of stop Bits, off = 1, on = 1.5 or 2) */
+#define LCR_PEN 0x08 /* Parity eneble*/
+#define LCR_EPS 0x10 /* Even Parity Select*/
+#define LCR_STKP 0x20 /* Stick Parity*/
+#define LCR_SBRK 0x40 /* Set Break*/
+#define LCR_BKSE 0x80 /* Bank select enable - aka DLAB on 8245 */
+
+#define LSR_DR 0x01 /* Data ready */
+#define LSR_OE 0x02 /* Overrun */
+#define LSR_PE 0x04 /* Parity error */
+#define LSR_FE 0x08 /* Framing error */
+#define LSR_BI 0x10 /* Break */
+#define LSR_THRE 0x20 /* Xmit holding register empty */
+#define LSR_TEMT 0x40 /* Xmitter empty */
+#define LSR_ERR 0x80 /* Error */
+
+/* useful defaults for LCR*/
+#define LCR_8N1 0x03
+
+
+volatile struct NS16550 * NS16550_init(int chan, int baud_divisor);
+void NS16550_putc(volatile struct NS16550 *com_port, unsigned char c);
+unsigned char NS16550_getc(volatile struct NS16550 *com_port);
+int NS16550_tstc(volatile struct NS16550 *com_port);
+void NS16550_reinit(volatile struct NS16550 *com_port, int baud_divisor);
+