Boot framework rework (#45)

[lunaix-os.git] / lunaix-os / arch / x86 / boot / bootmem.c

diff --git a/lunaix-os/arch/x86/boot/bootmem.c b/lunaix-os/arch/x86/boot/bootmem.c
new file mode 100644 (file)
index 0000000..3885118
--- /dev/null
+++ b/lunaix-os/arch/x86/boot/bootmem.c
@@ -0,0 +1,33 @@
+#include <lunaix/generic/bootmem.h>
+#include <lunaix/sections.h>
+#include <lunaix/spike.h>
+
+#define BOOTMEM_SIZE   (4 * 4096)
+
+static reclaimable char bootmem_pool[BOOTMEM_SIZE];
+static unsigned int pos;
+
+void*
+bootmem_alloc(unsigned int size)
+{
+    ptr_t res;
+
+    res = __ptr(bootmem_pool) + pos;
+    
+    size = ROUNDUP(size, 4);
+    pos += size;
+
+    if (pos >= BOOTMEM_SIZE) {
+        asm ("ud2");
+        unreachable;
+    }
+
+    return (void*)res;
+}
+
+void
+bootmem_free(void* ptr)
+{
+    // not need to support, as they are all one-shot
+    return;
+}
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