x86: Add hardware_subarch ID for Moorestown

x86 bootprotocol 2.07 has introduced hardware_subarch ID in the boot
parameters provided by FW. We use it to identify Moorestown platforms.

[ tglx: Cleanup and paravirt fix ]

Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt
index 8da3a79..30b43e1 100644 (file)
--- a/Documentation/x86/boot.txt
+++ b/Documentation/x86/boot.txt
@@ -599,6 +599,7 @@ Protocol:   2.07+
   0x00000000   The default x86/PC environment
   0x00000001   lguest
   0x00000002   Xen
+  0x00000003   Moorestown MID
 
 Field name:    hardware_subarch_data
 Type:          write (subarch-dependent)

diff --git a/arch/x86/include/asm/bootparam.h b/arch/x86/include/asm/bootparam.h
index 1724e8d..283a9a1 100644 (file)
--- a/arch/x86/include/asm/bootparam.h
+++ b/arch/x86/include/asm/bootparam.h
@@ -109,4 +109,14 @@ struct boot_params {
        __u8  _pad9[276];                               /* 0xeec */
 } __attribute__((packed));
 
+enum {
+       X86_SUBARCH_PC = 0,
+       X86_SUBARCH_LGUEST,
+       X86_SUBARCH_XEN,
+       X86_SUBARCH_MRST,
+       X86_NR_SUBARCHS,
+};
+
+
+
 #endif /* _ASM_X86_BOOTPARAM_H */

diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index cc827ac..304e3f3 100644 (file)
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -157,6 +157,7 @@ subarch_entries:
        .long default_entry             /* normal x86/PC */
        .long lguest_entry              /* lguest hypervisor */
        .long xen_entry                 /* Xen hypervisor */
+       .long default_entry             /* Moorestown MID */
 num_subarch_entries = (. - subarch_entries) / 4
 .previous
 #endif /* CONFIG_PARAVIRT */