diff options
Diffstat (limited to 'openwrt/target/linux/image/generic/lzma-loader/src/uart16550.c')
| -rw-r--r-- | openwrt/target/linux/image/generic/lzma-loader/src/uart16550.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/openwrt/target/linux/image/generic/lzma-loader/src/uart16550.c b/openwrt/target/linux/image/generic/lzma-loader/src/uart16550.c deleted file mode 100644 index 7df5727600..0000000000 --- a/openwrt/target/linux/image/generic/lzma-loader/src/uart16550.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * Copyright (C) 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * 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. - * - */ - - -#include "uart16550.h" - -/* === CONFIG === */ - -#define BASE 0xb8058000 -#define MAX_BAUD 1152000 -#define REG_OFFSET 4 - -/* === END OF CONFIG === */ - -/* register offset */ -#define OFS_RCV_BUFFER (0*REG_OFFSET) -#define OFS_TRANS_HOLD (0*REG_OFFSET) -#define OFS_SEND_BUFFER (0*REG_OFFSET) -#define OFS_INTR_ENABLE (1*REG_OFFSET) -#define OFS_INTR_ID (2*REG_OFFSET) -#define OFS_DATA_FORMAT (3*REG_OFFSET) -#define OFS_LINE_CONTROL (3*REG_OFFSET) -#define OFS_MODEM_CONTROL (4*REG_OFFSET) -#define OFS_RS232_OUTPUT (4*REG_OFFSET) -#define OFS_LINE_STATUS (5*REG_OFFSET) -#define OFS_MODEM_STATUS (6*REG_OFFSET) -#define OFS_RS232_INPUT (6*REG_OFFSET) -#define OFS_SCRATCH_PAD (7*REG_OFFSET) - -#define OFS_DIVISOR_LSB (0*REG_OFFSET) -#define OFS_DIVISOR_MSB (1*REG_OFFSET) - - -/* memory-mapped read/write of the port */ -#define UART16550_READ(y) (*((volatile uint32*)(BASE + y))) -#define UART16550_WRITE(y, z) ((*((volatile uint32*)(BASE + y))) = z) - -#define DEBUG_LED (*(unsigned short*)0xb7ffffc0) -#define OutputLED(x) (DEBUG_LED = x) - -void Uart16550Init(uint32 baud, uint8 data, uint8 parity, uint8 stop) -{ - /* disable interrupts */ - UART16550_WRITE(OFS_INTR_ENABLE, 0); - - /* set up buad rate */ - { - uint32 divisor; - - /* set DIAB bit */ - UART16550_WRITE(OFS_LINE_CONTROL, 0x80); - - /* set divisor */ - divisor = MAX_BAUD / baud; - UART16550_WRITE(OFS_DIVISOR_LSB, divisor & 0xff); - UART16550_WRITE(OFS_DIVISOR_MSB, (divisor & 0xff00)>>8); - - /* clear DIAB bit */ - UART16550_WRITE(OFS_LINE_CONTROL, 0x0); - } - - /* set data format */ - UART16550_WRITE(OFS_DATA_FORMAT, data | parity | stop); -} - -uint8 Uart16550GetPoll() -{ - while((UART16550_READ(OFS_LINE_STATUS) & 0x1) == 0); - return UART16550_READ(OFS_RCV_BUFFER); -} - - -void Uart16550Put(uint8 byte) -{ - while ((UART16550_READ(OFS_LINE_STATUS) &0x20) == 0); - UART16550_WRITE(OFS_SEND_BUFFER, byte); -} - |