869680c16f
Rename the 44x.c wrapper file to 4xx.c. This will allow us to add common functions in a single file that can be shared across all of 4xx. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
85 lines
2 KiB
C
85 lines
2 KiB
C
/*
|
|
* Copyright 2007 David Gibson, IBM Corporation.
|
|
*
|
|
* Based on earlier code:
|
|
* Matt Porter <mporter@kernel.crashing.org>
|
|
* Copyright 2002-2005 MontaVista Software Inc.
|
|
*
|
|
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
|
|
* Copyright (c) 2003, 2004 Zultys Technologies
|
|
*
|
|
* 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.
|
|
*/
|
|
#include <stddef.h>
|
|
#include "types.h"
|
|
#include "string.h"
|
|
#include "stdio.h"
|
|
#include "ops.h"
|
|
#include "reg.h"
|
|
#include "dcr.h"
|
|
|
|
/* Read the 44x memory controller to get size of system memory. */
|
|
void ibm44x_fixup_memsize(void)
|
|
{
|
|
int i;
|
|
unsigned long memsize, bank_config;
|
|
|
|
memsize = 0;
|
|
for (i = 0; i < ARRAY_SIZE(sdram_bxcr); i++) {
|
|
mtdcr(DCRN_SDRAM0_CFGADDR, sdram_bxcr[i]);
|
|
bank_config = mfdcr(DCRN_SDRAM0_CFGDATA);
|
|
|
|
if (bank_config & SDRAM_CONFIG_BANK_ENABLE)
|
|
memsize += SDRAM_CONFIG_BANK_SIZE(bank_config);
|
|
}
|
|
|
|
dt_fixup_memory(0, memsize);
|
|
}
|
|
|
|
#define SPRN_DBCR0 0x134
|
|
#define DBCR0_RST_SYSTEM 0x30000000
|
|
|
|
void ibm44x_dbcr_reset(void)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
asm volatile (
|
|
"mfspr %0,%1\n"
|
|
"oris %0,%0,%2@h\n"
|
|
"mtspr %1,%0"
|
|
: "=&r"(tmp) : "i"(SPRN_DBCR0), "i"(DBCR0_RST_SYSTEM)
|
|
);
|
|
|
|
}
|
|
|
|
/* Read 4xx EBC bus bridge registers to get mappings of the peripheral
|
|
* banks into the OPB address space */
|
|
void ibm4xx_fixup_ebc_ranges(const char *ebc)
|
|
{
|
|
void *devp;
|
|
u32 bxcr;
|
|
u32 ranges[EBC_NUM_BANKS*4];
|
|
u32 *p = ranges;
|
|
int i;
|
|
|
|
for (i = 0; i < EBC_NUM_BANKS; i++) {
|
|
mtdcr(DCRN_EBC0_CFGADDR, EBC_BXCR(i));
|
|
bxcr = mfdcr(DCRN_EBC0_CFGDATA);
|
|
|
|
if ((bxcr & EBC_BXCR_BU) != EBC_BXCR_BU_OFF) {
|
|
*p++ = i;
|
|
*p++ = 0;
|
|
*p++ = bxcr & EBC_BXCR_BAS;
|
|
*p++ = EBC_BXCR_BANK_SIZE(bxcr);
|
|
}
|
|
}
|
|
|
|
devp = finddevice(ebc);
|
|
if (! devp)
|
|
fatal("Couldn't locate EBC node %s\n\r", ebc);
|
|
|
|
setprop(devp, "ranges", ranges, (p - ranges) * sizeof(u32));
|
|
}
|