Add HURL; relocate kernel virtual regions

src/hulk/bootinfo.d

@@ -13,7 +13,7 @@ struct BootInfo
      */
     struct Framebuffer
     {
-        /** Framebuffer base address. */
+        /** Framebuffer physical base address. */
         uint * buffer;
         /** Horizontal resolution. */
         uint width;
@@ -68,6 +68,3 @@ struct BootInfo
     /* Physical address of stack while jumping to HULK. */
     ulong stack_phys;
 }
-
-/** HULK base virtual address. */
-enum ulong HULK_VIRTUAL_START = 0x0000_4000_0000_0000u;

src/hulk/header.d

@@ -23,4 +23,13 @@ struct Header
 
     /** Stack size. */
     ulong stack_size;
+
+    /** Virtual base address. */
+    ulong virt_base;
+
+    /** Stack top virtual address. */
+    ulong virt_stack_top;
+
+    /** Framebuffer virtual address. */
+    ulong virt_fb_buffer;
 }

src/hulk/hulk.d

@@ -11,14 +11,18 @@ import hos.memory;
 import ldc.attributes;
 import hulk.kfont;
 import hulk.klog;
+import hulk.hurl;
 
 extern extern(C) __gshared ubyte _hulk_total_size;
 
 @(ldc.attributes.section(".hulk_header"))
 private __gshared Header hulk_header = {
-    &_hulk_total_size,
-    &hulk_start,
-    16u * 1024u,
+    &_hulk_total_size, /* total_size */
+    &hulk_start, /* entry */
+    16u * 1024u, /* stack_size */
+    HULK_VIRTUAL_BASE_ADDRESS, /* virt_base */
+    HULK_VIRTUAL_STACK_TOP_ADDRESS, /* virt_stack_top */
+    HULK_VIRTUAL_FRAMEBUFFER_ADDRESS, /* virt_fb_buffer */
 };
 
 /**
@@ -28,7 +32,7 @@ private __gshared Header hulk_header = {
  */
 void hulk_start(BootInfo * bootinfo)
 {
-    fb.initialize(bootinfo.fb.buffer, bootinfo.fb.width, bootinfo.fb.height, bootinfo.fb.stride);
+    fb.initialize(cast(uint *)HULK_VIRTUAL_FRAMEBUFFER_ADDRESS, bootinfo.fb.width, bootinfo.fb.height, bootinfo.fb.stride);
     console.initialize();
     console.clear();
     klog.initialize();

src/hulk/hulk.ld

@@ -1,6 +1,6 @@
 SECTIONS
 {
-    . = 0x0000400000000000;
+    . = 0xFFFF800000000000;
     _hulk_mem_start = .;
 
     .rodata BLOCK(4K) : ALIGN(4K)

src/hulk/hurl.d

@@ -0,0 +1,15 @@
+/**
+ * HURL, the HOS Unreal Region Locator.
+ *
+ * HURL provides virtual memory management for HULK.
+ */
+module hulk.hurl;
+
+/** HULK virtual base address. */
+enum ulong HULK_VIRTUAL_BASE_ADDRESS = 0xFFFF_8000_0000_0000u;
+
+/** HULK virtual stack top address. */
+enum ulong HULK_VIRTUAL_STACK_TOP_ADDRESS = 0xFFFF_A000_0000_0000u;
+
+/** HULK virtual framebuffer address. */
+enum ulong HULK_VIRTUAL_FRAMEBUFFER_ADDRESS = 0xFFFF_A000_0000_0000u;