#include #if (defined(CONFIG_DDB5477) && defined(CONFIG_REMOTE_DEBUG)) /* --- CONFIG --- */ /* we need uint32 uint8 */ /* #include "types.h" */ 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 0xbfa04240 #define MAX_BAUD 115200 #define REG_OFFSET 8 /* === 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 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; int debug_state = -1; uint8 getDebugChar(void) { uint8 c; 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); c= UART16550_READ(OFS_RCV_BUFFER); /* if (state != 1) { state = 1; debug_out("\ngetDebugChar: ", 15); } debug_out(&c, 1); */ return c; } 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); if (debug_state != 2) { debug_state = 2; // debug_out("\nputDebugChar: ", 15); } // debug_out(&byte, 1); return 1; } #endif