?? debug_ram.mac
字號:
__var Check ; /* used in remap check */
AT91RM9200_Remap( )
{
Check = 1 + __readMemory32( 0x00000000, "Memory" ) ;
__writeMemory32( Check, 0x00000000, "Memory" ) ;
if( Check == __readMemory32( 0x00000000, "Memory" ) )
{ /* remap seems to be done already */
}
else
{ /* remap not done */
__writeMemory32( 0x00000001, 0xFFFFFF00, "Memory" ) ;
__message "remap done" ;
}
}
AT91RM9200_SDRAM( )
{
// set EBI cs for sdram
__writeMemory32( 0x00000002, 0xFFFFFF60, "Memory" ) ;
// init SDRAM
__writeMemory32( 0x7fffffd0, 0xFFFFFF98, "Memory" ) ;
__writeMemory32( 0x00000002, 0xFFFFFF90, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000004, 0xFFFFFF90, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000003, 0xFFFFFF90, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000080, "Memory" ) ;
__writeMemory32( 0x000001F4, 0xFFFFFF94, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
__writeMemory32( 0x00000000, 0xFFFFFF90, "Memory" ) ;
__writeMemory32( 0x00000000, 0x20000000, "Memory" ) ;
}
AT91RM9200_Clock( )
{
/* enable main clock */
if( 0x00000001 != ( __readMemory32( 0xFFFFFC30, "Memory" ) & 0x00000003 ) )
{ /* does not run on main clock */
/* enable main clock */
__writeMemory32( 0x0000FF01, 0xFFFFFC20, "Memory" ) ;
while( !( __readMemory32( 0xFFFFFC68, "Memory" ) & 0x00000001 ) )
{ /* wait for main clock ready */
}
/* select main clock */
__writeMemory32( 0x00000001, 0xFFFFFC30, "Memory" ) ;
__message "switched to main clock" ;
}
}
AT91RM9200_AIC( )
{
/* set protected mode */
__writeMemory32( 0x00000001, 0xFFFFF138, "Memory" ) ;
__message "AIC protected mode enabled" ;
}
AT91RM9200_Init( )
{
AT91RM9200_Clock( ) ;
AT91RM9200_Remap( ) ;
AT91RM9200_AIC( ) ;
AT91RM9200_SDRAM( ) ;
}
execUserPreload( )
{
AT91RM9200_Init( ) ;
}
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