freebsd-dev/sys/boot/ofw/libofw/ofw_memory.c
Benno Rice 8e465298e2 Major rework of how we copy data into kernel space.
We now talk to the memory and mmu instances directly rather than using the
OpenFirmware "claim" method.
2002-07-18 12:39:02 +00:00

101 lines
2.9 KiB
C

/*
* Copyright (c) 2001 Benno Rice
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``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 REGENTS OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/types.h>
#include <stand.h>
#include "libofw.h"
#include "openfirm.h"
static void *heap_base = 0;
static unsigned int heap_size = 0;
struct ofw_mapping {
vm_offset_t va;
int len;
vm_offset_t pa;
int mode;
};
void
ofw_memmap(void)
{
phandle_t mmup;
int nmapping, i;
struct ofw_mapping mappings[256];
mmup = OF_instance_to_package(mmu);
bzero(mappings, sizeof(mappings));
nmapping = OF_getprop(mmup, "translations", mappings, sizeof(mappings));
if (nmapping == -1) {
printf("Could not get memory map (%d)\n",
nmapping);
return;
}
nmapping /= sizeof(struct ofw_mapping);
printf("%17s %17s %8s %6s\n", "Virtual Range", "Physical Range",
"#Pages", "Mode");
for (i = 0; i < nmapping; i++) {
printf("%08x-%08x %08x-%08x %8d %6x\n", mappings[i].pa,
mappings[i].pa + mappings[i].len, mappings[i].va,
mappings[i].va + mappings[i].len, mappings[i].len / 0x1000,
mappings[i].mode);
}
}
void *
ofw_alloc_heap(unsigned int size)
{
phandle_t memoryp;
struct ofw_reg available;
void *base;
memoryp = OF_instance_to_package(memory);
OF_getprop(memoryp, "available", &available, sizeof(available));
heap_base = OF_claim((void *)available.base, size, sizeof(register_t));
if (heap_base != (void *)-1) {
heap_size = size;
}
return (heap_base);
}
void
ofw_release_heap(void)
{
OF_release(heap_base, heap_size);
}