xnu-2050.48.11.tar.gz

[apple/xnu.git] / osfmk / i386 / hibernate_restore.c

diff --git a/osfmk/i386/hibernate_restore.c b/osfmk/i386/hibernate_restore.c
index c1dfd4e162f6f95c94e4fb947416967779c22051..ba8704298087fe9d3cd9267e0776a876b8972d73 100644 (file)
--- a/osfmk/i386/hibernate_restore.c
+++ b/osfmk/i386/hibernate_restore.c
@@ -29,19 +29,15 @@
 #include <i386/proc_reg.h>
 #include <IOKit/IOHibernatePrivate.h>
 
-extern pd_entry_t BootstrapPTD[2048];
+#include <i386/pal_hibernate.h>
 
-#define TWO_MEG_MASK 0xFFFFFFFFFFE00000ULL
-
-#define DST_INDEX 2047UL
-
-static char *dstPtr = (char *)(DST_INDEX << PDSHIFT);
+extern pd_entry_t BootPTD[2048];
 
 // src is virtually mapped, not page aligned, 
 // dst is a physical 4k page aligned ptr, len is one 4K page
 // src & dst will not overlap
 
-void 
+uintptr_t 
 hibernate_restore_phys_page(uint64_t src, uint64_t dst, uint32_t len, uint32_t procFlags)
 {
        (void)procFlags;
@@ -50,25 +46,57 @@ hibernate_restore_phys_page(uint64_t src, uint64_t dst, uint32_t len, uint32_t p
        uint32_t idx;
 
        if (src == 0)
-               return;
-
-       if (dst < (uint64_t) (uintptr_t)dstPtr)
-       {
-               d = (uint64_t *) (uintptr_t)dst;
-       }
-       else
-       {
-               /* Outside 1-1 4G map so set up the mappings for the dest page using 2MB pages */
-               BootstrapPTD[DST_INDEX] = (dst & TWO_MEG_MASK) | INTEL_PTE_PS | INTEL_PTE_VALID | INTEL_PTE_WRITE | INTEL_PTE_WRITE;
-               
-               /* Invalidate the page tables for this */
-               invlpg((uintptr_t) dstPtr);
+               return (uintptr_t)dst;
 
-               /* Mask off the offset from the 2MB window */
-               dst &= ~TWO_MEG_MASK;
-               d = (uint64_t *) (dstPtr + dst);
-       }
+       d = (uint64_t *)pal_hib_map(DEST_COPY_AREA, dst);
        s = (uint64_t *) (uintptr_t)src;
+
        for (idx = 0; idx < (len / (uint32_t)sizeof(uint64_t)); idx++) 
                d[idx] = s[idx];
+
+       return (uintptr_t)d;
+}
+#undef hibprintf
+
+void hibprintf(const char *fmt, ...);
+
+uintptr_t
+pal_hib_map(uintptr_t virt, uint64_t phys)
+{
+    uintptr_t index;
+
+    switch (virt)
+    {
+       case DEST_COPY_AREA:
+       case SRC_COPY_AREA:
+       case COPY_PAGE_AREA:
+       case BITMAP_AREA:
+       case IMAGE_AREA:
+       case IMAGE2_AREA:
+           break;
+       default:
+           asm("cli;hlt;");
+           break;
+    }
+
+    index = (virt >> I386_LPGSHIFT);
+    virt += (uintptr_t)(phys & I386_LPGMASK);
+    phys  = ((phys & ~((uint64_t)I386_LPGMASK)) | INTEL_PTE_PS  | INTEL_PTE_VALID | INTEL_PTE_WRITE);
+    if (phys == BootPTD[index]) return (virt);
+    BootPTD[index] = phys;
+    invlpg(virt);
+    BootPTD[index + 1] = (phys + I386_LPGBYTES);
+    invlpg(virt + I386_LPGBYTES);
+
+    return (virt);
+}
+
+void hibernateRestorePALState(uint32_t *arg)
+{
+    (void)arg;
+}
+
+void
+pal_hib_patchup(void)
+{
 }