x86, boot: correct the calculation of ZO_INIT_SIZE
[linux-2.6.git] / arch / x86 / boot / header.S
index 2728514..1040f6e 100644 (file)
@@ -116,7 +116,7 @@ _start:
        # Part 2 of the header, from the old setup.S
 
                .ascii  "HdrS"          # header signature
-               .word   0x0209          # header version number (>= 0x0105)
+               .word   0x020a          # header version number (>= 0x0105)
                                        # or else old loadlin-1.5 will fail)
                .globl realmode_swtch
 realmode_swtch:        .word   0, 0            # default_switch, SETUPSEG
@@ -169,7 +169,11 @@ heap_end_ptr:      .word   _end+STACK_SIZE-512
                                        # end of setup code can be used by setup
                                        # for local heap purposes.
 
-pad1:          .word   0
+ext_loader_ver:
+               .byte   0               # Extended boot loader version
+ext_loader_type:
+               .byte   0               # Extended boot loader type
+
 cmd_line_ptr:  .long   0               # (Header version 0x0202 or later)
                                        # If nonzero, a 32-bit pointer
                                        # to the kernel command line.
@@ -201,7 +205,7 @@ relocatable_kernel:    .byte 1
 #else
 relocatable_kernel:    .byte 0
 #endif
-pad2:                  .byte 0
+min_alignment:         .byte MIN_KERNEL_ALIGN_LG2      # minimum alignment
 pad3:                  .word 0
 
 cmdline_size:   .long   COMMAND_LINE_SIZE-1     #length of the command line,
@@ -220,6 +224,17 @@ setup_data:                .quad 0                 # 64-bit physical pointer to
                                                # single linked list of
                                                # struct setup_data
 
+pref_address:          .quad LOAD_PHYSICAL_ADDR        # preferred load addr
+
+#define ZO_INIT_SIZE   (ZO__end - ZO_startup_32 + ZO_z_extract_offset)
+#define VO_INIT_SIZE   (VO__end - VO__text)
+#if ZO_INIT_SIZE > VO_INIT_SIZE
+#define INIT_SIZE ZO_INIT_SIZE
+#else
+#define INIT_SIZE VO_INIT_SIZE
+#endif
+init_size:             .long INIT_SIZE         # kernel initialization size
+
 # End of setup header #####################################################
 
        .section ".inittext", "ax"