no longer use deprecated ATAG_INITRD
[linexec-j720] / 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 }
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