Merge branch 'omap4-i2c-init' into omap-for-linus

[pandora-kernel.git] / arch / x86 / include / asm / boot.h

diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h
index 6ba23dd..3b62ab5 100644 (file)
--- a/arch/x86/include/asm/boot.h
+++ b/arch/x86/include/asm/boot.h
@@ -8,11 +8,26 @@
 
 #ifdef __KERNEL__
 
+#include <asm/pgtable_types.h>
+
 /* Physical address where kernel should be loaded. */
 #define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
                                + (CONFIG_PHYSICAL_ALIGN - 1)) \
                                & ~(CONFIG_PHYSICAL_ALIGN - 1))
 
+/* Minimum kernel alignment, as a power of two */
+#ifdef CONFIG_X86_64
+#define MIN_KERNEL_ALIGN_LG2   PMD_SHIFT
+#else
+#define MIN_KERNEL_ALIGN_LG2   (PAGE_SHIFT + THREAD_ORDER)
+#endif
+#define MIN_KERNEL_ALIGN       (_AC(1, UL) << MIN_KERNEL_ALIGN_LG2)
+
+#if (CONFIG_PHYSICAL_ALIGN & (CONFIG_PHYSICAL_ALIGN-1)) || \
+       (CONFIG_PHYSICAL_ALIGN < MIN_KERNEL_ALIGN)
+#error "Invalid value for CONFIG_PHYSICAL_ALIGN"
+#endif
+
 #ifdef CONFIG_KERNEL_BZIP2
 #define BOOT_HEAP_SIZE             0x400000
 #else /* !CONFIG_KERNEL_BZIP2 */