mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-18 19:50:37 +02:00
3fb97947af
This patch is out of broadcoms official source code git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18413 3c298f89-4303-0410-b956-a3cf2f4a3e73
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
|
|
* Early initialization code for BCM94710 boards
|
|
*
|
|
* Copyright 2004, Broadcom Corporation
|
|
* All Rights Reserved.
|
|
*
|
|
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
|
|
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
|
|
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#include <linux/config.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <asm/bootinfo.h>
|
|
|
|
void __init
|
|
prom_init(int argc, const char **argv)
|
|
{
|
|
unsigned long mem;
|
|
|
|
mips_machgroup = MACH_GROUP_BRCM;
|
|
mips_machtype = MACH_BCM947XX;
|
|
|
|
/* Figure out memory size by finding aliases */
|
|
for (mem = (1 << 20); mem < (128 << 20); mem += (1 << 20)) {
|
|
if (*(unsigned long *)((unsigned long)(prom_init) + mem) ==
|
|
*(unsigned long *)(prom_init))
|
|
break;
|
|
}
|
|
|
|
/* Ignoring the last page when ddr size is 128M. Cached
|
|
* accesses to last page is causing the processor to prefetch
|
|
* using address above 128M stepping out of the ddr address
|
|
* space.
|
|
*/
|
|
if (mem == 0x8000000)
|
|
mem -= 0x1000;
|
|
|
|
add_memory_region(0, mem, BOOT_MEM_RAM);
|
|
}
|
|
|
|
void __init
|
|
prom_free_prom_memory(void)
|
|
{
|
|
}
|