diff options
Diffstat (limited to 'arch/mips/pmc-sierra/yosemite/dbg_io.c')
| -rw-r--r-- | arch/mips/pmc-sierra/yosemite/dbg_io.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/dbg_io.c b/arch/mips/pmc-sierra/yosemite/dbg_io.c deleted file mode 100644 index 6362c702e389..000000000000 --- a/arch/mips/pmc-sierra/yosemite/dbg_io.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * Copyright 2003 PMC-Sierra - * Author: Manish Lachwani (lachwani@pmc-sierra.com) - * - * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * 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., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -/* - * Support for KGDB for the Yosemite board. We make use of single serial - * port to be used for KGDB as well as console. The second serial port - * seems to be having a problem. Single IRQ is allocated for both the - * ports. Hence, the interrupt routing code needs to figure out whether - * the interrupt came from channel A or B. - */ - -#include <asm/serial.h> - -/* - * Baud rate, Parity, Data and Stop bit settings for the - * serial port on the Yosemite. Note that the Early printk - * patch has been added. So, we should be all set to go - */ -#define YOSEMITE_BAUD_2400 2400 -#define YOSEMITE_BAUD_4800 4800 -#define YOSEMITE_BAUD_9600 9600 -#define YOSEMITE_BAUD_19200 19200 -#define YOSEMITE_BAUD_38400 38400 -#define YOSEMITE_BAUD_57600 57600 -#define YOSEMITE_BAUD_115200 115200 - -#define YOSEMITE_PARITY_NONE 0 -#define YOSEMITE_PARITY_ODD 0x08 -#define YOSEMITE_PARITY_EVEN 0x18 -#define YOSEMITE_PARITY_MARK 0x28 -#define YOSEMITE_PARITY_SPACE 0x38 - -#define YOSEMITE_DATA_5BIT 0x0 -#define YOSEMITE_DATA_6BIT 0x1 -#define YOSEMITE_DATA_7BIT 0x2 -#define YOSEMITE_DATA_8BIT 0x3 - -#define YOSEMITE_STOP_1BIT 0x0 -#define YOSEMITE_STOP_2BIT 0x4 - -/* This is crucial */ -#define SERIAL_REG_OFS 0x1 - -#define SERIAL_RCV_BUFFER 0x0 -#define SERIAL_TRANS_HOLD 0x0 -#define SERIAL_SEND_BUFFER 0x0 -#define SERIAL_INTR_ENABLE (1 * SERIAL_REG_OFS) -#define SERIAL_INTR_ID (2 * SERIAL_REG_OFS) -#define SERIAL_DATA_FORMAT (3 * SERIAL_REG_OFS) -#define SERIAL_LINE_CONTROL (3 * SERIAL_REG_OFS) -#define SERIAL_MODEM_CONTROL (4 * SERIAL_REG_OFS) -#define SERIAL_RS232_OUTPUT (4 * SERIAL_REG_OFS) -#define SERIAL_LINE_STATUS (5 * SERIAL_REG_OFS) -#define SERIAL_MODEM_STATUS (6 * SERIAL_REG_OFS) -#define SERIAL_RS232_INPUT (6 * SERIAL_REG_OFS) -#define SERIAL_SCRATCH_PAD (7 * SERIAL_REG_OFS) - -#define SERIAL_DIVISOR_LSB (0 * SERIAL_REG_OFS) -#define SERIAL_DIVISOR_MSB (1 * SERIAL_REG_OFS) - -/* - * Functions to READ and WRITE to serial port 0 - */ -#define SERIAL_READ(ofs) (*((volatile unsigned char*) \ - (TITAN_SERIAL_BASE + ofs))) - -#define SERIAL_WRITE(ofs, val) ((*((volatile unsigned char*) \ - (TITAN_SERIAL_BASE + ofs))) = val) - -/* - * Functions to READ and WRITE to serial port 1 - */ -#define SERIAL_READ_1(ofs) (*((volatile unsigned char*) \ - (TITAN_SERIAL_BASE_1 + ofs))) - -#define SERIAL_WRITE_1(ofs, val) ((*((volatile unsigned char*) \ - (TITAN_SERIAL_BASE_1 + ofs))) = val) - -/* - * Second serial port initialization - */ -void init_second_port(void) -{ - /* Disable Interrupts */ - SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x0); - SERIAL_WRITE_1(SERIAL_INTR_ENABLE, 0x0); - - { - unsigned int divisor; - - SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x80); - divisor = TITAN_SERIAL_BASE_BAUD / YOSEMITE_BAUD_115200; - SERIAL_WRITE_1(SERIAL_DIVISOR_LSB, divisor & 0xff); - - SERIAL_WRITE_1(SERIAL_DIVISOR_MSB, - (divisor & 0xff00) >> 8); - SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x0); - } - - SERIAL_WRITE_1(SERIAL_DATA_FORMAT, YOSEMITE_DATA_8BIT | - YOSEMITE_PARITY_NONE | YOSEMITE_STOP_1BIT); - - /* Enable Interrupts */ - SERIAL_WRITE_1(SERIAL_INTR_ENABLE, 0xf); -} - -/* Initialize the serial port for KGDB debugging */ -void debugInit(unsigned int baud, unsigned char data, unsigned char parity, - unsigned char stop) -{ - /* Disable Interrupts */ - SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x0); - SERIAL_WRITE(SERIAL_INTR_ENABLE, 0x0); - - { - unsigned int divisor; - - SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x80); - - divisor = TITAN_SERIAL_BASE_BAUD / baud; - SERIAL_WRITE(SERIAL_DIVISOR_LSB, divisor & 0xff); - - SERIAL_WRITE(SERIAL_DIVISOR_MSB, (divisor & 0xff00) >> 8); - SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x0); - } - - SERIAL_WRITE(SERIAL_DATA_FORMAT, data | parity | stop); -} - -static int remoteDebugInitialized = 0; - -unsigned char getDebugChar(void) -{ - if (!remoteDebugInitialized) { - remoteDebugInitialized = 1; - debugInit(YOSEMITE_BAUD_115200, - YOSEMITE_DATA_8BIT, - YOSEMITE_PARITY_NONE, YOSEMITE_STOP_1BIT); - } - - while ((SERIAL_READ(SERIAL_LINE_STATUS) & 0x1) == 0); - return SERIAL_READ(SERIAL_RCV_BUFFER); -} - -int putDebugChar(unsigned char byte) -{ - if (!remoteDebugInitialized) { - remoteDebugInitialized = 1; - debugInit(YOSEMITE_BAUD_115200, - YOSEMITE_DATA_8BIT, - YOSEMITE_PARITY_NONE, YOSEMITE_STOP_1BIT); - } - - while ((SERIAL_READ(SERIAL_LINE_STATUS) & 0x20) == 0); - SERIAL_WRITE(SERIAL_SEND_BUFFER, byte); - - return 1; -} |