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/*
* arch/mips/ddb5074/prom.c -- NEC DDB Vrc-5074 PROM routines
*
* Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
* Sony Suprastructure Center Europe (SUPC-E), Brussels
*
* $Id: prom.c,v 1.1 2000/01/26 00:07:44 ralf Exp $
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/bootmem.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
char arcs_cmdline[CL_SIZE];
extern char _end;
#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
void __init prom_init(const char *s)
{
int i = 0;
unsigned long mem_size, free_start, free_end, start_pfn, bootmap_size;
// _serinit();
if (s != (void *)-1)
while (*s && i < sizeof(arcs_cmdline)-1)
arcs_cmdline[i++] = *s++;
arcs_cmdline[i] = '\0';
mips_machgroup = MACH_GROUP_NEC_DDB;
mips_machtype = MACH_NEC_DDB5074;
/* 64 MB non-upgradable */
mem_size = 64 << 20;
free_start = PHYSADDR(PFN_ALIGN(&_end));
free_end = mem_size;
start_pfn = PFN_UP((unsigned long)&_end);
/* Register all the contiguous memory with the bootmem allocator
and free it. Be careful about the bootmem freemap. */
bootmap_size = init_bootmem(start_pfn, mem_size >> PAGE_SHIFT);
/* Free the entire available memory after the _end symbol. */
free_start += bootmap_size;
free_bootmem(free_start, free_end-free_start);
}
void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
{
}
void __init prom_free_prom_memory(void)
{
}
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