x86: Add early platform detection

Platforms like Moorestown require early setup and want to avoid the
call to reserve_ebda_region. The x86_init override is too late when
the MRST detection happens in setup_arch. Move the default i386
x86_init overrides and the call to reserve_ebda_region into a separate
function which is called as the default of a switch case depending on
the hardware_subarch id in boot params. This allows us to add a case
for MRST and let MRST have its own early setup function.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 20df51871713..b6c89428137d 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -2,6 +2,7 @@
 #define _ASM_X86_PLATFORM_H
 
 #include <asm/pgtable_types.h>
+#include <asm/bootparam.h>
 
 struct mpc_bus;
 struct mpc_cpu;
@@ -34,14 +35,12 @@ struct x86_init_mpparse {
  * @probe_roms:                 probe BIOS roms
  * @reserve_resources:          reserve the standard resources for the
  *                              platform
- * @reserve_ebda_region:        reserve the extended bios data area
  * @memory_setup:               platform specific memory setup
  *
  */
 struct x86_init_resources {
         void (*probe_roms)(void);
         void (*reserve_resources)(void);
-        void (*reserve_ebda_region)(void);
         char *(*memory_setup)(void);
 };