#include <linux/config.h>#if defined(CONFIG_REMOTE_DEBUG)/* --- CONFIG --- */typedef unsigned char uint8;typedef unsigned int uint32;/* --- END OF CONFIG --- */#define         UART16550_BAUD_2400             2400#define         UART16550_BAUD_4800             4800#define         UART16550_BAUD_9600             9600#define         UART16550_BAUD_19200            19200#define         UART16550_BAUD_38400            38400#define         UART16550_BAUD_57600            57600#define         UART16550_BAUD_115200           115200#define         UART16550_PARITY_NONE           0#define         UART16550_PARITY_ODD            0x08#define         UART16550_PARITY_EVEN           0x18#define         UART16550_PARITY_MARK           0x28#define         UART16550_PARITY_SPACE          0x38#define         UART16550_DATA_5BIT             0x0#define         UART16550_DATA_6BIT             0x1#define         UART16550_DATA_7BIT             0x2#define         UART16550_DATA_8BIT             0x3#define         UART16550_STOP_1BIT             0x0#define         UART16550_STOP_2BIT             0x4/* ----------------------------------------------------- *//* === CONFIG === *//* [jsun] we use the second serial port for kdb */#define         BASE                    0xbd000020#define         MAX_BAUD                115200/* === END OF CONFIG === */#define         REG_OFFSET              4/* register offset */#define         OFS_RCV_BUFFER          0#define         OFS_TRANS_HOLD          0#define         OFS_SEND_BUFFER         0#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 uint8*)(BASE + y)))#define         UART16550_WRITE(y, z)  ((*((volatile uint8*)(BASE + y))) = z)void debugInit(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);}static int remoteDebugInitialized = 0;uint8 getDebugChar(void){	if (!remoteDebugInitialized) {		remoteDebugInitialized = 1;		debugInit(UART16550_BAUD_38400,			  UART16550_DATA_8BIT,			  UART16550_PARITY_NONE, UART16550_STOP_1BIT);	}	while ((UART16550_READ(OFS_LINE_STATUS) & 0x1) == 0);	return UART16550_READ(OFS_RCV_BUFFER);}int putDebugChar(uint8 byte){	if (!remoteDebugInitialized) {		remoteDebugInitialized = 1;		debugInit(UART16550_BAUD_9600,			  UART16550_DATA_8BIT,			  UART16550_PARITY_NONE, UART16550_STOP_1BIT);	}	while ((UART16550_READ(OFS_LINE_STATUS) & 0x20) == 0);	UART16550_WRITE(OFS_SEND_BUFFER, byte);	return 1;}#endif