diff options
Diffstat (limited to 'sys/boot/ofw/libofw/ofw_memory.c')
-rw-r--r-- | sys/boot/ofw/libofw/ofw_memory.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/sys/boot/ofw/libofw/ofw_memory.c b/sys/boot/ofw/libofw/ofw_memory.c new file mode 100644 index 0000000..132800a --- /dev/null +++ b/sys/boot/ofw/libofw/ofw_memory.c @@ -0,0 +1,104 @@ +/* + * 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) +{ + ihandle_t mmui; + phandle_t mmu; + int nmapping, i; + struct ofw_mapping mappings[256]; + + OF_getprop(chosen, "mmu", &mmui, 4); + mmu = OF_instance_to_package(mmui); + + bzero(mappings, sizeof(mappings)); + + nmapping = OF_getprop(mmu, "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) +{ + ihandle_t meminstance; + phandle_t memory; + struct ofw_reg available; + void *base; + + OF_getprop(chosen, "memory", &meminstance, sizeof(meminstance)); + memory = OF_instance_to_package(meminstance); + OF_getprop(memory, "available", &available, sizeof(available)); + + heap_base = OF_claim((void *)available.base, size, 4); + + if (heap_base != (void *)0xffffffff) { + heap_size = size; + } + + return (heap_base); +} + +void +ofw_release_heap(void) +{ + OF_release(heap_base, heap_size); +} |