1 #include <klibc/string.h>
2 #include <lunaix/boot_generic.h>
3 #include <lunaix/mm/page.h>
4 #include <lunaix/mm/pmm.h>
5 #include <lunaix/mm/vmm.h>
6 #include <lunaix/spike.h>
7 #include <sys/mm/mempart.h>
10 * @brief Reserve memory for kernel bootstrapping initialization
15 boot_begin(struct boot_handoff* bhctx)
17 bhctx->prepare(bhctx);
19 struct boot_mmapent *mmap = bhctx->mem.mmap, *mmapent;
20 for (size_t i = 0; i < bhctx->mem.mmap_len; i++) {
22 size_t size_pg = PN(ROUNDUP(mmapent->size, PG_SIZE));
24 if (mmapent->type == BOOT_MMAP_FREE) {
25 pmm_mark_chunk_free(PN(mmapent->start), size_pg);
29 ptr_t pa = PG_ALIGN(mmapent->start);
30 for (size_t j = 0; j < size_pg && pa < KERNEL_EXEC;
31 j++, pa += PM_PAGE_SIZE) {
32 vmm_set_mapping(VMS_SELF, pa, pa, PG_PREM_RW, VMAP_IGNORE);
37 extern u8_t __kexec_boot_end; /* link/linker.ld */
40 * @brief Release memory for kernel bootstrapping initialization
45 boot_end(struct boot_handoff* bhctx)
47 struct boot_mmapent *mmap = bhctx->mem.mmap, *mmapent;
48 for (size_t i = 0; i < bhctx->mem.mmap_len; i++) {
50 size_t size_pg = PN(ROUNDUP(mmapent->size, PG_SIZE));
52 if (mmapent->start >= KERNEL_EXEC || mmapent->type == BOOT_MMAP_FREE) {
56 if (mmapent->type == BOOT_MMAP_RCLM) {
57 pmm_mark_chunk_free(PN(mmapent->start), size_pg);
60 ptr_t pa = PG_ALIGN(mmapent->start);
61 for (size_t j = 0; j < size_pg && pa < KERNEL_EXEC;
62 j++, pa += PM_PAGE_SIZE) {
63 vmm_del_mapping(VMS_SELF, pa);
67 bhctx->release(bhctx);
71 * @brief Clean up the boot stage code and data
78 for (size_t i = 0; i < (ptr_t)(&__kexec_boot_end); i += PG_SIZE) {
79 vmm_del_mapping(VMS_SELF, (ptr_t)i);
80 pmm_free_page(KERNEL_PID, (ptr_t)i);