git.zerfleddert.de Git - linexec-j720/blob - uart.cpp

   1 #include "stdafx.h"
   2 #include "tester1.h"
   3 #include <commctrl.h>
   4 //#include <aygshell.h>
   5 #include <sipapi.h>
   6 #include "setup.h"
   7
   8 // moved to config.h
   9 //#define FUART 0x40100000
  10
  11
  12 void UART_puts(char *s)
  13 {
  14         UINT32 *base=(UINT32*)VirtualAlloc((void*)0x0,sizeof(void*)*0xffff, MEM_RESERVE,PAGE_READWRITE);
  15         int ret=VirtualCopy(base,(void *) ((UARTBASE)/256),sizeof(void*)*0xffff , PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL);
  16         int a=0;
  17         while(s[a])
  18         {
  19                 while((base[UARTSTATUS/4]&1<<UARTTXRDY) == UARTTXBIT) {}
  20                 base[UARTDATA/4]=(char)(s[a]);
  21                 a++;
  22         }
  23 }
  24
  25 void UART_setup()
  26 {
  27         UINT32 *base=(UINT32*)VirtualAlloc((void*)0x0,sizeof(void*)*0xffff, MEM_RESERVE,PAGE_READWRITE);
  28         int ret=VirtualCopy(base,(void *) ((UARTBASE)/256),sizeof(void*)*0xffff , PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL);
  29
  30 #ifdef STRONGARM
  31 // Apparently there is something we don't know. This is needed.
  32         HANDLE hSerial = CreateFile(L"COM1:", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
  33 // disable UART
  34         base[0x0C/4] = 0;
  35 // clear status
  36         base[0x1C/4] = 0xFF;
  37 // set 8 bit no parity 1 stopbit
  38         base[0x00/4] = 9;
  39 // set 115200 bps
  40         base[0x04/4] = 0;
  41         base[0x08/4] = 1;
  42 // enable TX/RX
  43         base[0x0C/4] = 3;
  44 #else
  45 // set DLAB
  46         base[0x0C/4]=128+2+1;
  47 // set divisor
  48         base[0]=8; // 115200 bps
  49         base[0x04/4]=0;
  50 // unset DLAB
  51         base[0x0C/4]=2+1;
  52 // UART enable & no FIFO
  53         base[0x04/4]=64;
  54         base[0x08/4]=0;
  55 #endif
  56
  57         char test[]="LinExec: UART Initialized.\n\r";
  58         int a=0;
  59         while(test[a])
  60         {
  61                 while((base[UARTSTATUS/4]&1<<UARTTXRDY) == UARTTXBIT) {}
  62                 base[UARTDATA/4]=(char)(test[a]);
  63                 a++;
  64         }
  65 }