You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.7 KiB
86 lines
2.7 KiB
20 years ago
|
/*
|
||
|
|
* BRIEF MODULE DESCRIPTION
|
||
|
|
* IT8172/QED5231 board setup.
|
||
|
|
*
|
||
|
|
* Copyright 2000 MontaVista Software Inc.
|
||
|
|
* Author: MontaVista Software, Inc.
|
||
|
|
* ppopov@mvista.com or source@mvista.com
|
||
|
|
*
|
||
|
|
* 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
||
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* 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.,
|
||
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
*/
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <linux/bootmem.h>
|
||
|
|
#include <asm/addrspace.h>
|
||
|
|
#include <asm/bootinfo.h>
|
||
|
|
#include <linux/string.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <asm/it8172/it8172.h>
|
||
|
|
#include <asm/it8172/it8172_dbg.h>
|
||
|
|
|
||
|
|
int prom_argc;
|
||
|
|
char **prom_argv, **prom_envp;
|
||
|
|
|
||
|
|
extern char _end;
|
||
|
|
extern void __init prom_init_cmdline(void);
|
||
|
|
extern unsigned long __init prom_get_memsize(void);
|
||
|
|
extern void __init it8172_init_ram_resource(unsigned long memsize);
|
||
|
|
|
||
|
|
#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
|
||
|
|
#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
|
||
|
|
|
||
|
|
const char *get_system_type(void)
|
||
|
|
{
|
||
|
|
return "ITE QED-4N-S01B";
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init prom_init(void)
|
||
|
|
{
|
||
|
|
unsigned long mem_size;
|
||
|
|
unsigned long pcicr;
|
||
|
|
|
||
|
|
prom_argc = fw_arg0;
|
||
|
|
prom_argv = (char **) fw_arg1;
|
||
|
|
prom_envp = (int *) fw_arg3;
|
||
|
|
|
||
|
|
mips_machgroup = MACH_GROUP_ITE;
|
||
|
|
mips_machtype = MACH_QED_4N_S01B; /* ITE board name/number */
|
||
|
|
|
||
|
|
prom_init_cmdline();
|
||
|
|
mem_size = prom_get_memsize();
|
||
|
|
|
||
|
|
printk("Memory size: %dMB\n", (unsigned)mem_size);
|
||
|
|
|
||
|
|
mem_size <<= 20; /* MB */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* make the entire physical memory visible to pci bus masters
|
||
|
|
*/
|
||
|
|
IT_READ(IT_MC_PCICR, pcicr);
|
||
|
|
pcicr &= ~0x1f;
|
||
|
|
pcicr |= (mem_size - 1) >> 22;
|
||
|
|
IT_WRITE(IT_MC_PCICR, pcicr);
|
||
|
|
|
||
|
|
it8172_init_ram_resource(mem_size);
|
||
|
|
add_memory_region(0, mem_size, BOOT_MEM_RAM);
|
||
|
|
}
|