Merge branch 'broonie/spi-next' of git://git.kernel.org/pub/scm/linux/kernel/git...

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / x86 / boot / header.S

diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index 8c132a625b94991c179def21973bb8ad3c3a56d5..944ce595f767621f07a47d6c89cdea9415627663 100644 (file)
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -21,6 +21,7 @@
 #include <asm/e820.h>
 #include <asm/page_types.h>
 #include <asm/setup.h>
+#include <asm/bootparam.h>
 #include "boot.h"
 #include "voffset.h"
 #include "zoffset.h"
@@ -255,6 +256,9 @@ section_table:
        # header, from the old boot sector.
 
        .section ".header", "a"
+       .globl  sentinel
+sentinel:      .byte 0xff, 0xff        /* Used to detect broken loaders */
+
        .globl  hdr
 hdr:
 setup_sects:   .byte 0                 /* Filled in by build.c */
@@ -279,7 +283,7 @@ _start:
        # Part 2 of the header, from the old setup.S
 
                .ascii  "HdrS"          # header signature
-               .word   0x020b          # header version number (>= 0x0105)
+               .word   0x020c          # header version number (>= 0x0105)
                                        # or else old loadlin-1.5 will fail)
                .globl realmode_swtch
 realmode_swtch:        .word   0, 0            # default_switch, SETUPSEG
@@ -297,13 +301,7 @@ type_of_loader:    .byte   0               # 0 means ancient bootloader, newer
 
 # flags, unused bits must be zero (RFU) bit within loadflags
 loadflags:
-LOADED_HIGH    = 1                     # If set, the kernel is loaded high
-CAN_USE_HEAP   = 0x80                  # If set, the loader also has set
-                                       # heap_end_ptr to tell how much
-                                       # space behind setup.S can be used for
-                                       # heap purposes.
-                                       # Only the loader knows what is free
-               .byte   LOADED_HIGH
+               .byte   LOADED_HIGH     # The kernel is to be loaded high
 
 setup_move_size: .word  0x8000         # size to move, when setup is not
                                        # loaded at 0x90000. We will move setup
@@ -369,7 +367,23 @@ relocatable_kernel:    .byte 1
 relocatable_kernel:    .byte 0
 #endif
 min_alignment:         .byte MIN_KERNEL_ALIGN_LG2      # minimum alignment
-pad3:                  .word 0
+
+xloadflags:
+#ifdef CONFIG_X86_64
+# define XLF0 XLF_KERNEL_64                    /* 64-bit kernel */
+#else
+# define XLF0 0
+#endif
+#ifdef CONFIG_EFI_STUB
+# ifdef CONFIG_X86_64
+#  define XLF23 XLF_EFI_HANDOVER_64            /* 64-bit EFI handover ok */
+# else
+#  define XLF23 XLF_EFI_HANDOVER_32            /* 32-bit EFI handover ok */
+# endif
+#else
+# define XLF23 0
+#endif
+                       .word XLF0 | XLF23
 
 cmdline_size:   .long   COMMAND_LINE_SIZE-1     #length of the command line,
                                                 #added with boot protocol
@@ -397,8 +411,13 @@ pref_address:              .quad LOAD_PHYSICAL_ADDR        # preferred load addr
 #define INIT_SIZE VO_INIT_SIZE
 #endif
 init_size:             .long INIT_SIZE         # kernel initialization size
-handover_offset:       .long 0x30              # offset to the handover
+handover_offset:
+#ifdef CONFIG_EFI_STUB
+                       .long 0x30              # offset to the handover
                                                # protocol entry point
+#else
+                       .long 0
+#endif
 
 # End of setup header #####################################################