init commit via android 4.4 uboot

1 files changed, 102 insertions, 0 deletions

diff --git a/board/Marvell/common/ns16550.h b/board/Marvell/common/ns16550.h
new file mode 100755
index 0000000..f2ed2ab
--- /dev/null
+++ b/board/Marvell/common/ns16550.h
@@ -0,0 +1,102 @@
+/*
+ * 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 DUART in the Galileo eval board
+ * modifications (c) Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
+ */
+
+#ifndef __NS16550_H__
+#define __NS16550_H__
+
+/* the padding is necessary because on the galileo board the UART is
+   wired in with the 3 address lines shifted over by 2 bits */
+struct NS16550
+{
+	unsigned char rbr;  /* 0 = 0-3*/
+	int pad1:24;
+
+	unsigned char ier;  /* 1 = 4-7*/
+	int pad2:24;
+
+	unsigned char fcr;  /* 2 = 8-b*/
+	int pad3:24;
+
+	unsigned char lcr;  /* 3 = c-f*/
+	int pad4:24;
+
+	unsigned char mcr;  /* 4 = 10-13*/
+	int pad5:24;
+
+	unsigned char lsr;  /* 5 = 14-17*/
+	int pad6:24;
+
+	unsigned char msr;  /* 6 =18-1b*/
+	int pad7:24;
+
+	unsigned char scr;  /* 7 =1c-1f*/
+	int pad8:24;
+} __attribute__ ((packed));
+
+/* aliases */
+#define thr rbr
+#define iir fcr
+#define dll rbr
+#define dlm ier
+
+#define FCR_FIFO_EN     0x01    /*fifo enable*/
+#define FCR_RXSR        0x02    /*reciever soft reset*/
+#define FCR_TXSR        0x04    /*transmitter soft reset*/
+
+
+#define MCR_DTR         0x01
+#define MCR_RTS         0x02
+#define MCR_DMA_EN      0x04
+#define MCR_TX_DFR      0x08
+
+
+#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*/
+
+#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
+
+
+#define COM1 0x03F8
+#define COM2 0x02F8
+
+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);
+
+typedef struct NS16550 *NS16550_t;
+
+extern const NS16550_t COM_PORTS[];
+
+#endif