diff options
Diffstat (limited to 'kernel/src/mem/pmm.c')
| -rw-r--r-- | kernel/src/mem/pmm.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/kernel/src/mem/pmm.c b/kernel/src/mem/pmm.c index 63bfb07..e8245f2 100644 --- a/kernel/src/mem/pmm.c +++ b/kernel/src/mem/pmm.c @@ -7,8 +7,7 @@ #include <multiboot2.h> #include <pmm.h> -#define PMM_PAGE_SIZE 4096 * 512 -#define MEM_USED_BELOW 0x03000000 +#define MEM_USED_BELOW 50*1024*1024 uint64_t free_mem_cnt; uint64_t all_mem_cnt; @@ -23,8 +22,8 @@ void init_pmm() mb2_tag_mmap_entry entry = pos->mmap_entry; if (entry.type != 1) continue; - uint64_t base = entry.base_addr & (PMM_PAGE_SIZE - 1) ? (entry.base_addr & (uint64_t)~(PMM_PAGE_SIZE - 1)) + PMM_PAGE_SIZE : entry.base_addr; - for (uint64_t i = base; i + PMM_PAGE_SIZE <= entry.base_addr + entry.length; i += PMM_PAGE_SIZE) { + uint64_t base = entry.base_addr & (PAGE_SIZE - 1) ? (entry.base_addr & (uint64_t)~(PAGE_SIZE - 1)) + PAGE_SIZE : entry.base_addr; + for (uint64_t i = base; i + PAGE_SIZE <= entry.base_addr + entry.length; i += PAGE_SIZE) { if (i >= MEM_USED_BELOW) { free_mem_cnt++; map_addr(i, i, FLAG_PRESENT); @@ -44,6 +43,6 @@ void init_pmm() void memory_usage() { - printf("memory used: %dMB\n", (48 * 1024 * 1024 + (all_mem_cnt - free_mem_cnt) * PAGE_SIZE) / 1024 / 1024); + printf("memory used: %dMB\n", (MEM_USED_BELOW + (all_mem_cnt - free_mem_cnt) * PAGE_SIZE) / 1024 / 1024); printf("memory free: %dMB\n", free_mem_cnt * PAGE_SIZE / 1024 / 1024); } |