HelenOS sources
This source file includes following definitions.
- frame_common_arch_init
- frame_low_arch_init
- frame_high_arch_init
#include <arch/mm/frame.h>
#include <mm/frame.h>
#include <config.h>
#include <panic.h>
#include <arch/bootinfo.h>
#include <align.h>
#include <macros.h>
#define KERNEL_RESERVED_AREA_BASE (0x4400000)
#define KERNEL_RESERVED_AREA_SIZE (16 * 1024 * 1024)
#define ROM_BASE 0xa0000
#define ROM_SIZE (384 * 1024)
#define MIN_ZONE_SIZE (64 * 1024)
#define MINCONF 1
uintptr_t end_of_identity = -1ULL;
static void frame_common_arch_init(bool low)
{
unsigned int i;
for (i = 0; i < bootinfo->memmap_items; i++) {
if (bootinfo->memmap[i].type != MEMMAP_FREE_MEM)
continue;
uintptr_t base = bootinfo->memmap[i].base;
size_t size = bootinfo->memmap[i].size;
uintptr_t abase = ALIGN_UP(base, FRAME_SIZE);
if (size > FRAME_SIZE)
size -= abase - base;
if (!frame_adjust_zone_bounds(low, &abase, &size))
continue;
if (size > MIN_ZONE_SIZE) {
pfn_t pfn = ADDR2PFN(abase);
size_t count = SIZE2FRAMES(size);
if (low) {
zone_create(pfn, count, max(MINCONF, pfn),
ZONE_AVAILABLE | ZONE_LOWMEM);
} else {
pfn_t conf = zone_external_conf_alloc(count);
if (conf != 0)
zone_create(pfn, count, conf,
ZONE_AVAILABLE | ZONE_HIGHMEM);
}
}
}
}
void frame_low_arch_init(void)
{
if (config.cpu_active > 1)
return;
frame_common_arch_init(true);
frame_mark_unavailable(ADDR2PFN(ROM_BASE),
SIZE2FRAMES(ROM_SIZE));
frame_mark_unavailable(ADDR2PFN(KERNEL_RESERVED_AREA_BASE),
SIZE2FRAMES(KERNEL_RESERVED_AREA_SIZE));
end_of_identity = PA2KA(config.physmem_end - FRAME_SIZE) + PAGE_SIZE;
}
void frame_high_arch_init(void)
{
if (config.cpu_active > 1)
return;
frame_common_arch_init(false);
}
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