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desmume
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Create valid dummy firmware data (includes touchscreen calibration values).

This commit is contained in:
masscat 2007-05-23 11:42:44 +00:00
parent b3ec7b1f29
commit 1bba9c9573
1 changed files with 147 additions and 2 deletions
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149
desmume/src/NDSSystem.c
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@ -20,14 +20,42 @@
*/
#include <string.h>
#include "NDSSystem.h"
#include <stdlib.h>
#include "NDSSystem.h"
#include "MMU.h"
#include "cflash.h"
#include "ROMReader.h"
NDSSystem nds;
NDSFirmware firmware;
static u32
calc_CRC16( u32 start, u8 *data, int count) {
int i,j;
u32 crc = start & 0xffff;
static u16 val[] = { 0xC0C1,0xC181,0xC301,0xC601,0xCC01,0xD801,0xF001,0xA001 };
for(i = 0; i < count; i++)
{
crc = crc ^ data[i];
for(j = 0; j < 8; j++) {
int do_bit = 0;
if ( crc & 0x1)
do_bit = 1;
crc = crc >> 1;
if ( do_bit) {
crc = crc ^ (val[j] << (7-j));
}
}
}
return crc;
}
int NDS_Init(void) {
nds.ARM9Cycle = 0;
nds.ARM7Cycle = 0;
@ -305,7 +333,7 @@ void NDS_FreeROM(void)
MMU.bupmem.fp = NULL;
}
void NDS_Reset(void)
void NDS_Reset( void)
{
BOOL oldexecute=execute;
int i;
@ -553,9 +581,126 @@ int NDS_WriteBMP(const char *filename)
return 1;
}
static
void create_user_data( u8 *data, int count) {
memset( data, 0, 0x100);
/* version */
data[0x00] = 5;
data[0x01] = 0;
/* colour */
data[0x02] = 7;
/* birthday month and day */
data[0x03] = 6;
data[0x04] = 23;
/* nickname and length */
data[0x06] = 'y';
data[0x08] = 'o';
data[0x0a] = 'p';
data[0x0c] = 'y';
data[0x0e] = 'o';
data[0x10] = 'p';
data[0x1a] = 6;
/* Message */
data[0x1c] = 'D';
data[0x1e] = 'e';
data[0x20] = 'S';
data[0x22] = 'm';
data[0x24] = 'u';
data[0x26] = 'M';
data[0x28] = 'E';
data[0x2a] = ' ';
data[0x2c] = 'm';
data[0x2e] = 'a';
data[0x30] = 'k';
data[0x32] = 'e';
data[0x34] = 's';
data[0x36] = ' ';
data[0x38] = 'y';
data[0x3a] = 'o';
data[0x3c] = 'u';
data[0x3e] = ' ';
data[0x40] = 'h';
data[0x42] = 'a';
data[0x44] = 'p';
data[0x46] = 'p';
data[0x48] = 'y';
data[0x4a] = '!';
data[0x50] = 24;
/*
* touch screen calibration
*/
/* ADC position 1, x y */
data[0x58] = 0x00;
data[0x59] = 0x02;
data[0x5a] = 0x00;
data[0x5b] = 0x02;
/* screen pos 1, x y */
data[0x5c] = 0x20;
data[0x5d] = 0x20;
/* ADC position 2, x y */
data[0x5e] = 0x00;
data[0x5f] = 0x0e;
data[0x60] = 0x00;
data[0x61] = 0x08;
/* screen pos 2, x y */
data[0x62] = 0xe0;
data[0x63] = 0x80;
/* language and flags */
data[0x64] = 0x01;
data[0x65] = 0xfc;
/* update count and crc */
data[0x70] = count & 0xff;
data[0x71] = (count >> 8) & 0xff;
u32 crc = calc_CRC16( 0xffff, data, 0x70);
data[0x72] = crc & 0xff;
data[0x73] = (crc >> 8) & 0xff;
memset( &data[0x74], 0xff, 0x100 - 0x74);
}
/* creates an firmware flash image, which contains all needed info to initiate a wifi connection */
int NDS_CreateDummyFirmware(void)
{
/*
* Create the firmware header
*/
memset( MMU.fw.data, 0, 0x200);
/* firmware identifier */
MMU.fw.data[0x8] = 'M';
MMU.fw.data[0x8 + 1] = 'A';
MMU.fw.data[0x8 + 2] = 'C';
MMU.fw.data[0x8 + 3] = 'P';
/* DS type (phat) */
MMU.fw.data[0x1d] = 0xff;
/* User Settings offset 0x3fe00 / 8 */
MMU.fw.data[0x20] = 0xc0;
MMU.fw.data[0x21] = 0x7f;
/*
* User settings (at 0x3FE00 and 0x3FE00)
*/
create_user_data( &MMU.fw.data[ 0x3FE00], 0);
create_user_data( &MMU.fw.data[ 0x3FF00], 1);
#ifdef EXPERIMENTAL_WIFI
memcpy(MMU.fw.data+0x36,FW_Mac,sizeof(FW_Mac)) ;
memcpy(MMU.fw.data+0x44,FW_WIFIInit,sizeof(FW_WIFIInit)) ;