flashreadid.c
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/*---------------------------------------------------------------------
Copyright (C) 1998 Nintendo.
File flash.c
Coded by Atushi Watanabe. Dec 1, 1998.
Modified by Atushi Watanabe. Apr 4, 2000.
Comments 1M Flash ROM access functions(Ver.7.6)
$Id: flashreadid.c,v 1.3 2003/12/13 02:14:54 wheeler Exp $
---------------------------------------------------------------------*/
/**************************************************************************
*
* $Revision: 1.3 $
* $Date: 2003/12/13 02:14:54 $
* $Source:
*
**************************************************************************/
#include <ultra64.h>
#include "osint_flash.h"
/* READ ID */
void osFlashReadId(u32 *flash_type, u32 *flash_maker)
{
#ifdef BBPLAYER
*flash_type = __osFlashID[0] = 0x11118001 ;
*flash_maker = __osFlashID[1] = 0xc20000 ;
#else
u8 tmp;
/* Read Status */
/* コマンドコンビネーションバグの（２）を回避するためのダミーコマンド */
osFlashReadStatus(&tmp);
/* Set Read ID */
osEPiWriteIo(&__osFlashHandler,(__osFlashHandler.baseAddress|0x10000),0xe1000000);
/* Read ID */
__osFlashMsg.hdr.pri = OS_MESG_PRI_NORMAL;
__osFlashMsg.hdr.retQueue = &__osFlashMessageQ;
__osFlashMsg.dramAddr = &__osFlashID[0];
__osFlashMsg.devAddr = 0;
__osFlashMsg.size = 0x8;
osInvalDCache(&__osFlashID[0], 16);
osEPiStartDma(&__osFlashHandler, &__osFlashMsg, OS_READ);
(void)osRecvMesg(&__osFlashMessageQ, NULL, OS_MESG_BLOCK);
*flash_type = __osFlashID[0];
*flash_maker = __osFlashID[1];
return;
#endif
}