xnu-7195.50.7.100.1.tar.gz

[apple/xnu.git] / osfmk / arm / lowmem_vectors.c

diff --git a/osfmk/arm/lowmem_vectors.c b/osfmk/arm/lowmem_vectors.c
index 77fe49fdde1e02eed005dc41186c10a1c1ab5a92..96702d83027c4ac527b85bb51eff3c3eb7441bc1 100644 (file)
--- a/osfmk/arm/lowmem_vectors.c
+++ b/osfmk/arm/lowmem_vectors.c
@@ -48,7 +48,7 @@ lowglo lowGlo __attribute__ ((aligned(PAGE_MAX_SIZE))) = {
        // Increment the minor version for changes that provide additonal info/function
        // but does not break current usage
        .lgLayoutMajorVersion = 3,
-       .lgLayoutMinorVersion = 0,
+       .lgLayoutMinorVersion = 2,
        .lgLayoutMagic = LOWGLO_LAYOUT_MAGIC,
        .lgVersion = (uint32_t)&version,
        .lgKmodptr = (uint32_t)&kmod,
@@ -65,10 +65,11 @@ lowglo lowGlo __attribute__ ((aligned(PAGE_MAX_SIZE))) = {
        .lgPmapMemPageOffset = offsetof(struct vm_page_with_ppnum, vmp_phys_page),
        .lgPmapMemChainOffset = offsetof(struct vm_page, vmp_listq),
        .lgPmapMemPagesize = (uint32_t)sizeof(struct vm_page),
-
        .lgPmapMemStartAddr = -1,
        .lgPmapMemEndAddr = -1,
-       .lgPmapMemFirstppnum = -1
+       .lgPmapMemFirstppnum = -1,
+       .lgVmFirstPhys = -1,
+       .lgVmLastPhys = -1
 };
 
 void
@@ -82,8 +83,18 @@ patch_low_glo_static_region(uint32_t address, uint32_t size)
 {
        lowGlo.lgStaticAddr = address;
        lowGlo.lgStaticSize = size;
-}
 
+       /**
+        * These values are set in pmap_bootstrap() and represent the range of
+        * kernel managed memory.
+        */
+       extern const pmap_paddr_t vm_first_phys;
+       extern const pmap_paddr_t vm_last_phys;
+       assertf((vm_first_phys != 0) && (vm_last_phys != 0),
+           "Tried setting the Low Globals before pmap_bootstrap()");
+       lowGlo.lgVmFirstPhys = vm_first_phys;
+       lowGlo.lgVmLastPhys = vm_last_phys;
+}
 
 void
 patch_low_glo_vm_page_info(void * start_addr, void * end_addr, uint32_t first_ppnum)