#include <asm/io.h> #include <asm/mach-au1x00/au1000.h> #ifdef CONFIG_KGDB /* * FIXME the user should be able to select the * uart to be used for debugging. */ #define DEBUG_BASE UART_DEBUG_BASE /**/ /* we need uint32 uint8 */ /* #include "types.h" */ typedef unsigned char uint8; typedef unsigned int uint32; #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 #define UART_RX 0 /* Receive buffer */ #define UART_TX 4 /* Transmit buffer */ #define UART_IER 8 /* Interrupt Enable Register */ #define UART_IIR 0xC /* Interrupt ID Register */ #define UART_FCR 0x10 /* FIFO Control Register */ #define UART_LCR 0x14 /* Line Control Register */ #define UART_MCR 0x18 /* Modem Control Register */ #define UART_LSR 0x1C /* Line Status Register */ #define UART_MSR 0x20 /* Modem Status Register */ #define UART_CLK 0x28 /* Baud Rat4e Clock Divider */ #define UART_MOD_CNTRL 0x100 /* Module Control */ /* memory-mapped read/write of the port */ #define UART16550_READ(y) (au_readl(DEBUG_BASE + y) & 0xff) #define UART16550_WRITE(y,z) (au_writel(z&0xff, DEBUG_BASE + y)) extern unsigned long get_au1x00_uart_baud_base(void); extern unsigned long cal_r4koff(void); void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop) { if (UART16550_READ(UART_MOD_CNTRL) != 0x3) { UART16550_WRITE(UART_MOD_CNTRL, 3); } cal_r4koff(); /* disable interrupts */ UART16550_WRITE(UART_IER, 0); /* set up baud rate */ { uint32 divisor; /* set divisor */ divisor = get_au1x00_uart_baud_base() / baud; UART16550_WRITE(UART_CLK, divisor & 0xffff); } /* set data format */ UART16550_WRITE(UART_LCR, (data | parity | stop)); } static int remoteDebugInitialized = 0; uint8 getDebugChar(void) { if (!remoteDebugInitialized) { remoteDebugInitialized = 1; debugInit(UART16550_BAUD_115200, UART16550_DATA_8BIT, UART16550_PARITY_NONE, UART16550_STOP_1BIT); } while((UART16550_READ(UART_LSR) & 0x1) == 0); return UART16550_READ(UART_RX); } int putDebugChar(uint8 byte) { // int i; if (!remoteDebugInitialized) { remoteDebugInitialized = 1; debugInit(UART16550_BAUD_115200, UART16550_DATA_8BIT, UART16550_PARITY_NONE, UART16550_STOP_1BIT); } while ((UART16550_READ(UART_LSR)&0x40) == 0); UART16550_WRITE(UART_TX, byte); //for (i=0;i<0xfff;i++); return 1; } #endif