X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/22d06cbaaf660067bfea03f73bee9c8630c05d50..3d33d9c0d1894c447324d8327200c212ddad3716:/lunaix-os/arch/aarch64/boot/kremap.c

diff --git a/lunaix-os/arch/aarch64/boot/kremap.c b/lunaix-os/arch/aarch64/boot/kremap.c
index e69de29..b91d1d5 100644
--- a/lunaix-os/arch/aarch64/boot/kremap.c
+++ b/lunaix-os/arch/aarch64/boot/kremap.c
@@ -0,0 +1,37 @@
+#include <lunaix/sections.h>
+
+#include <asm/mm_defs.h>
+#include <asm-generic/init_pagetable.h>
+#include <asm/boot_stage.h>
+
+#include "init.h"
+
+static pte_t kpt[LEVEL_SIZE][32];
+
+ptr_t
+kremap()
+{
+    struct pt_alloc alloc;
+    struct ptw_state ptw;
+    pte_t pte;
+    unsigned long nr;
+
+    init_pt_alloc(&alloc, to_kphysical(&kpt), sizeof(kpt));
+    init_ptw_state(&ptw, &alloc, kpt_alloc_table(&alloc));
+
+    pte = mkpte(bootsec_start, KERNEL_DATA);
+    pte = pte_mkexec(pte);
+    nr  = leaf_count(bootsec_end - bootsec_start);
+    kpt_set_ptes(&ptw, bootsec_start, pte, LFT_SIZE, nr);
+
+    kpt_mktable_at(&ptw, VMAP, L0T_SIZE);
+    kpt_mktable_at(&ptw, PMAP, L2T_SIZE);
+    kpt_mktable_at(&ptw, KMAP, LFT_SIZE);
+
+    kpt_migrate_highmem(&ptw);
+
+    pte = mkpte(__ptr(ptw.root), KERNEL_PGTAB);
+    kpt_set_ptes(&ptw, VMS_SELF, pte, L0T_SIZE, 1);
+
+    return __ptr(ptw.root);
+}
\ No newline at end of file