mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-10-05 19:10:53 +09:00
198 lines
4.7 KiB
C
198 lines
4.7 KiB
C
|
/*
|
||
|
* (C) Copyright 2003
|
||
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
||
|
*
|
||
|
* See file CREDITS for list of people who contributed to this
|
||
|
* project.
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or
|
||
|
* modify it under the terms of the GNU General Public License as
|
||
|
* published by the Free Software Foundation; either version 2 of
|
||
|
* the License, or (at your option) any later version.
|
||
|
*
|
||
|
* This program is distributed in the hope that it will be useful,
|
||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
* GNU General Public License for more details.
|
||
|
*
|
||
|
* You should have received a copy of the GNU General Public License
|
||
|
* along with this program; if not, write to the Free Software
|
||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||
|
* MA 02111-1307 USA
|
||
|
*/
|
||
|
|
||
|
#include <common.h>
|
||
|
#include <command.h>
|
||
|
#include <asm/inca-ip.h>
|
||
|
#include <asm/regdef.h>
|
||
|
#include <asm/mipsregs.h>
|
||
|
#include <asm/addrspace.h>
|
||
|
#include <asm/cacheops.h>
|
||
|
|
||
|
#include "sconsole.h"
|
||
|
|
||
|
#define cache_unroll(base,op) \
|
||
|
__asm__ __volatile__(" \
|
||
|
.set noreorder; \
|
||
|
.set mips3; \
|
||
|
cache %1, (%0); \
|
||
|
.set mips0; \
|
||
|
.set reorder" \
|
||
|
: \
|
||
|
: "r" (base), \
|
||
|
"i" (op));
|
||
|
|
||
|
typedef void (*FUNCPTR)(ulong *source, ulong *destination, ulong nlongs);
|
||
|
|
||
|
extern void asc_serial_init (void);
|
||
|
extern void asc_serial_putc (char);
|
||
|
extern void asc_serial_puts (const char *);
|
||
|
extern int asc_serial_getc (void);
|
||
|
extern int asc_serial_tstc (void);
|
||
|
extern void asc_serial_setbrg (void);
|
||
|
|
||
|
|
||
|
long int initdram(int board_type)
|
||
|
{
|
||
|
/* The only supported number of SDRAM banks is 4.
|
||
|
*/
|
||
|
#define CFG_NB 4
|
||
|
|
||
|
ulong cfgpb0 = *INCA_IP_SDRAM_MC_CFGPB0;
|
||
|
ulong cfgdw = *INCA_IP_SDRAM_MC_CFGDW;
|
||
|
int cols = cfgpb0 & 0xF;
|
||
|
int rows = (cfgpb0 & 0xF0) >> 4;
|
||
|
int dw = cfgdw & 0xF;
|
||
|
ulong size = (1 << (rows + cols)) * (1 << (dw - 1)) * CFG_NB;
|
||
|
|
||
|
return size;
|
||
|
}
|
||
|
|
||
|
int checkboard (void)
|
||
|
{
|
||
|
|
||
|
unsigned long chipid = *(unsigned long *)0xB800C800;
|
||
|
|
||
|
printf ("Board: Purple PLB 2800 chip version %ld, ", chipid & 0xF);
|
||
|
|
||
|
printf("CPU Speed %d MHz\n", CPU_CLOCK_RATE/1000000);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int misc_init_r (void)
|
||
|
{
|
||
|
asc_serial_init ();
|
||
|
|
||
|
sconsole_putc = asc_serial_putc;
|
||
|
sconsole_puts = asc_serial_puts;
|
||
|
sconsole_getc = asc_serial_getc;
|
||
|
sconsole_tstc = asc_serial_tstc;
|
||
|
sconsole_setbrg = asc_serial_setbrg;
|
||
|
|
||
|
sconsole_flush ();
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
/*******************************************************************************
|
||
|
*
|
||
|
* copydwords - copy one buffer to another a long at a time
|
||
|
*
|
||
|
* This routine copies the first <nlongs> longs from <source> to <destination>.
|
||
|
*/
|
||
|
static void copydwords (ulong *source, ulong *destination, ulong nlongs)
|
||
|
{
|
||
|
ulong temp,temp1;
|
||
|
ulong *dstend = destination + nlongs;
|
||
|
|
||
|
while (destination < dstend)
|
||
|
{
|
||
|
temp = *source++;
|
||
|
/* dummy read from sdram */
|
||
|
temp1 = *(ulong *)0xa0000000;
|
||
|
/* avoid optimization from compliler */
|
||
|
*(ulong *)0xbf0081f8 = temp1 + temp;
|
||
|
*destination++ = temp;
|
||
|
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*******************************************************************************
|
||
|
*
|
||
|
* copyLongs - copy one buffer to another a long at a time
|
||
|
*
|
||
|
* This routine copies the first <nlongs> longs from <source> to <destination>.
|
||
|
*/
|
||
|
static void copyLongs (ulong *source, ulong *destination, ulong nlongs)
|
||
|
{
|
||
|
FUNCPTR absEntry;
|
||
|
|
||
|
absEntry = (FUNCPTR)(0xbf008000+((ulong)copydwords & 0x7));
|
||
|
absEntry(source, destination, nlongs);
|
||
|
}
|
||
|
|
||
|
/*******************************************************************************
|
||
|
*
|
||
|
* programLoad - load program into ram
|
||
|
*
|
||
|
* This routine load copydwords into ram
|
||
|
*
|
||
|
*/
|
||
|
static void programLoad(void)
|
||
|
{
|
||
|
FUNCPTR absEntry;
|
||
|
ulong *src,*dst;
|
||
|
|
||
|
src = (ulong *)(TEXT_BASE + 0x428);
|
||
|
dst = (ulong *)0xbf0081d0;
|
||
|
|
||
|
absEntry = (FUNCPTR)(TEXT_BASE + 0x400);
|
||
|
absEntry(src,dst,0x6);
|
||
|
|
||
|
src = (ulong *)((ulong)copydwords & 0xfffffff8);
|
||
|
dst = (ulong *)0xbf008000;
|
||
|
|
||
|
absEntry(src,dst,0x38);
|
||
|
}
|
||
|
|
||
|
/*******************************************************************************
|
||
|
*
|
||
|
* copy_code - copy u-boot image from flash to RAM
|
||
|
*
|
||
|
* This routine is needed to solve flash problems on this board
|
||
|
*
|
||
|
*/
|
||
|
void copy_code (ulong dest_addr)
|
||
|
{
|
||
|
unsigned long start;
|
||
|
unsigned long end;
|
||
|
|
||
|
/* load copydwords into ram
|
||
|
*/
|
||
|
programLoad();
|
||
|
|
||
|
/* copy u-boot code
|
||
|
*/
|
||
|
copyLongs((ulong *)CFG_MONITOR_BASE,
|
||
|
(ulong *)dest_addr,
|
||
|
(CFG_MONITOR_LEN + 3) / 4);
|
||
|
|
||
|
|
||
|
/* flush caches
|
||
|
*/
|
||
|
|
||
|
start = KSEG0;
|
||
|
end = start + CFG_DCACHE_SIZE;
|
||
|
while(start < end) {
|
||
|
cache_unroll(start,Index_Writeback_Inv_D);
|
||
|
start += CFG_CACHELINE_SIZE;
|
||
|
}
|
||
|
|
||
|
start = KSEG0;
|
||
|
end = start + CFG_ICACHE_SIZE;
|
||
|
while(start < end) {
|
||
|
cache_unroll(start,Index_Invalidate_I);
|
||
|
start += CFG_CACHELINE_SIZE;
|
||
|
}
|
||
|
}
|