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/*
* ppmc7xx.c
* ---------
*
* Main board-specific routines for Wind River PPMC 7xx/74xx board.
*
* By Richard Danter (richard.danter@windriver.com)
* Copyright (C) 2005 Wind River Systems
*/
#include <common.h>
#include <command.h>
#include <netdev.h>
/* Define some MPC107 (memory controller) registers */
#define MPC107_EUMB_GCR 0xfce41020
#define MPC107_EUMB_IACKR 0xfce600a0
/* Function prototypes */
extern void _start(void);
/*
* initdram()
*
* This function normally initialises the (S)DRAM of the system. For this board
* the SDRAM was already initialised by board_asm_init (see init.S) so we just
* return the size of RAM.
*/
phys_size_t initdram( int board_type )
{
return CONFIG_SYS_SDRAM_SIZE;
}
/*
* after_reloc()
*
* This is called after U-Boot has been copied from Flash/ROM to RAM. It gives
* us an opportunity to do some additional setup before the rest of the system
* is initialised. We don't need to do anything, so we just call board_init_r()
* which should never return.
*/
void after_reloc( ulong dest_addr, gd_t* gd )
{
/* Jump to the main U-Boot board init code */
board_init_r( gd, dest_addr );
}
/*
* checkboard()
*
* We could do some board level checks here, such as working out what version
* it is, but for this board we simply display it's name (on the console).
*/
int checkboard( void )
{
puts( "Board: Wind River PPMC 7xx/74xx\n" );
return 0;
}
/*
* misc_init_r
*
* Used for other setup which needs to be done late in the bring-up phase.
*/
int misc_init_r( void )
{
/* Reset the EPIC and clear pending interrupts */
out32r(MPC107_EUMB_GCR, 0xa0000000);
while( in32r( MPC107_EUMB_GCR ) & 0x80000000 );
out32r( MPC107_EUMB_GCR, 0x20000000 );
while( in32r( MPC107_EUMB_IACKR ) != 0xff );
/* Enable the I-Cache */
icache_enable();
return 0;
}
/*
* do_reset()
*
* Shell command to reset the board.
*/
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
printf( "Resetting...\n" );
/* Disabe and invalidate cache */
icache_disable();
dcache_disable();
/* Jump to cold reset point (in RAM) */
_start();
/* Should never get here */
while(1)
;
return 1;
}
int board_eth_init(bd_t *bis)
{
return pci_eth_init(bis);
}
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