Architectural Support: x86_64 (#37)

[lunaix-os.git] / lunaix-os / arch / i386 / boot / kpt_setup.c

diff --git a/lunaix-os/arch/i386/boot/kpt_setup.c b/lunaix-os/arch/i386/boot/kpt_setup.c
deleted file mode 100644 (file)
index c353d77..0000000
--- a/lunaix-os/arch/i386/boot/kpt_setup.c
+++ /dev/null
@@ -1,110 +0,0 @@
-#define __BOOT_CODE__
-
-#include <lunaix/mm/pagetable.h>
-#include <lunaix/compiler.h>
-
-#include <sys/boot/bstage.h>
-#include <sys/mm/mm_defs.h>
-
-// Provided by linker (see linker.ld)
-extern u8_t __kexec_start[];
-extern u8_t __kexec_end[];
-extern u8_t __kexec_text_start[];
-extern u8_t __kexec_text_end[];
-extern u8_t __kboot_start[];
-extern u8_t __kboot_end[];
-
-// define the initial page table layout
-struct kernel_map {
-    pte_t l0t[_PAGE_LEVEL_SIZE];
-    pte_t pg_mnt[_PAGE_LEVEL_SIZE];
-
-    struct {
-        pte_t _lft[_PAGE_LEVEL_SIZE];
-    } kernel_lfts[16];
-} align(4);
-
-static struct kernel_map kernel_pt __section(".kpg");
-export_symbol(debug, boot, kernel_pt);
-
-
-void boot_text
-_init_page()
-{
-    struct kernel_map* kpt_pa = (struct kernel_map*)to_kphysical(&kernel_pt);
-
-    pte_t* kl0tep       = (pte_t*) &kpt_pa->l0t[pfn_at(KERNEL_RESIDENT, L0T_SIZE)];
-    pte_t* kl1tep       = (pte_t*)  kpt_pa->kernel_lfts;    
-    pte_t* boot_l0tep   = (pte_t*)  kpt_pa;
-
-    set_pte(boot_l0tep, pte_mkhuge(mkpte_prot(KERNEL_DATA)));
-
-    // --- 将内核重映射至高半区 ---
-
-    // Hook the kernel reserved LFTs onto L0T
-    pte_t pte = mkpte((ptr_t)kl1tep, KERNEL_DATA);
-    
-    for (u32_t i = 0; i < KEXEC_RSVD; i++) {
-        pte = pte_setpaddr(pte, (ptr_t)&kpt_pa->kernel_lfts[i]);
-        set_pte(kl0tep, pte);
-
-        kl0tep++;
-    }
-
-    // Ensure the size of kernel is within the reservation
-    pfn_t kimg_pagecount = 
-        pfn((ptr_t)__kexec_end - (ptr_t)__kexec_start);
-    if (kimg_pagecount > KEXEC_RSVD * _PAGE_LEVEL_SIZE) {
-        // ERROR: require more pages
-        //  here should do something else other than head into blocking
-        asm("ud2");
-    }
-
-    // Now, map the kernel
-
-    pfn_t kimg_end = pfn(to_kphysical(__kexec_end));
-    pfn_t i = pfn(to_kphysical(__kexec_text_start));
-    kl1tep += i;
-
-    // kernel .text
-    pte = pte_setprot(pte, KERNEL_EXEC);
-    pfn_t ktext_end = pfn(to_kphysical(__kexec_text_end));
-    for (; i < ktext_end; i++) {
-        pte = pte_setpaddr(pte, page_addr(i));
-        set_pte(kl1tep, pte);
-
-        kl1tep++;
-    }
-
-    // all remaining kernel sections
-    pte = pte_setprot(pte, KERNEL_DATA);
-    for (; i < kimg_end; i++) {
-        pte = pte_setpaddr(pte, page_addr(i));
-        set_pte(kl1tep, pte);
-
-        kl1tep++;
-    }
-
-    // XXX: Mapping the kernel .rodata section?
-
-    // set mount point
-    pte_t* kmntep = (pte_t*) &kpt_pa->l0t[pfn_at(PG_MOUNT_1, L0T_SIZE)];
-    set_pte(kmntep, mkpte((ptr_t)kpt_pa->pg_mnt, KERNEL_DATA));
-
-    // Build up self-reference
-    pte = mkpte_root((ptr_t)kpt_pa, KERNEL_DATA);
-    set_pte(boot_l0tep + _PAGE_LEVEL_MASK, pte);
-}
-
-ptr_t boot_text
-kpg_init()
-{
-    ptr_t kmap_pa = to_kphysical(&kernel_pt);
-    for (size_t i = 0; i < sizeof(kernel_pt); i++) {
-        ((u8_t*)kmap_pa)[i] = 0;
-    }
-
-    _init_page();
-
-    return kmap_pa;
-}
\ No newline at end of file