From 71fc6c551dc7951576f636a8594d623c0cb48938 Mon Sep 17 00:00:00 2001
From: wdenk
Date: Tue, 6 Aug 2002 19:52:25 +0000
Subject: Initial revision

---
 board/bmw/ns16550.h | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 board/bmw/ns16550.h

(limited to 'board/bmw/ns16550.h')

diff --git a/board/bmw/ns16550.h b/board/bmw/ns16550.h
new file mode 100644
index 00000000000..b80ac02af93
--- /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);
+
-- 
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