Architectural Support: x86_64 (#37)

[lunaix-os.git] / lunaix-os / arch / i386 / mm / pmm.c

diff --git a/lunaix-os/arch/i386/mm/pmm.c b/lunaix-os/arch/i386/mm/pmm.c
deleted file mode 100644 (file)
index 7a6ef29..0000000
--- a/lunaix-os/arch/i386/mm/pmm.c
+++ /dev/null
@@ -1,68 +0,0 @@
-#include <lunaix/mm/page.h>
-#include <lunaix/mm/pagetable.h>
-
-extern unsigned int __kexec_end[];
-
-void
-pmm_arch_init_pool(struct pmem* memory)
-{
-    pmm_declare_pool(POOL_UNIFIED, 1, memory->list_len);
-}
-
-ptr_t
-pmm_arch_init_remap(struct pmem* memory, struct boot_handoff* bctx)
-{
-    size_t ppfn_total = pfn(bctx->mem.size) + 1;
-    size_t pool_size  = ppfn_total * sizeof(struct ppage);
-    
-    size_t i = 0;
-    struct boot_mmapent* ent;
-    for (; i < bctx->mem.mmap_len; i++) {
-        ent = &bctx->mem.mmap[i];
-        if (free_memregion(ent) && ent->size > pool_size) {
-            goto found;
-        }
-    }
-
-    // fail to find a viable free region to host pplist
-    return 0;
-
-found:;
-    ptr_t kexec_end = to_kphysical(__kexec_end);
-    ptr_t aligned_pplist = MAX(ent->start, kexec_end);
-
-    // FIXME this is a temporary hack, we need a better way to convey
-    //       the mem-map for us to settle the pplist safely
-
-    for (i = 0; i <bctx->mods.mods_num; i++) {
-        aligned_pplist = MAX(aligned_pplist, bctx->mods.entries[i].end);
-    }
-
-    aligned_pplist = napot_upaligned(aligned_pplist, L0T_SIZE);
-
-    if (aligned_pplist + pool_size > ent->start + ent->size) {
-        return 0;
-    }
-
-    // for x86_32, the upper bound of memory requirement for pplist
-    //  is sizeof(struct ppage) * 1MiB. For simplicity (as well as 
-    //  efficiency), we limit the granule to 4M huge page, thus, 
-    //  it will take away at least 4M worth of vm address resource 
-    //  regardless the actual physical memory size
-
-    // anchor the pplist at vmap location (right after kernel)
-    memory->pplist = (struct ppage*)VMAP;
-    memory->list_len = ppfn_total;
-
-    pfn_t nhuge = page_count(pool_size, L0T_SIZE);
-    pte_t* ptep = mkl0tep_va(VMS_SELF, VMAP);
-    pte_t pte   = mkpte(aligned_pplist, KERNEL_DATA);
-    
-    vmm_set_ptes_contig(ptep, pte_mkhuge(pte), L0T_SIZE, nhuge);
-    tlb_flush_kernel(VMAP);
-
-    // shift the actual vmap start address
-    vmap_set_start(VMAP + nhuge * L0T_SIZE);
-
-    return aligned_pplist;
-}
\ No newline at end of file