[PATCH v1 1/2] x86/platform/intel-mid: enable 64-bit build
From: Andy Shevchenko
Date: Fri Jan 15 2016 - 15:11:22 EST
Intel Tangier SoC is known to have 64-bit dual core CPU. Enable 64-bit build
for it.
The kernel has been tested on Intel Edison board.
Linux buildroot 4.4.0-next-20160115+ #25 SMP Fri Jan 15 22:03:19 EET 2016 x86_64 GNU/Linux
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 74
model name : Genuine Intel(R) CPU 4000 @ 500MHz
stepping : 8
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
arch/x86/Kconfig | 3 +--
arch/x86/kernel/head64.c | 8 ++++++++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ebb810f..0ebc19a 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -510,11 +510,10 @@ config X86_INTEL_CE
config X86_INTEL_MID
bool "Intel MID platform support"
- depends on X86_32
depends on X86_EXTENDED_PLATFORM
depends on X86_PLATFORM_DEVICES
depends on PCI
- depends on PCI_GOANY
+ depends on X86_64 || (PCI_GOANY && X86_32)
depends on X86_IO_APIC
select SFI
select I2C
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index f129a9a..2c0f340 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -192,5 +192,13 @@ void __init x86_64_start_reservations(char *real_mode_data)
reserve_ebda_region();
+ switch (boot_params.hdr.hardware_subarch) {
+ case X86_SUBARCH_INTEL_MID:
+ x86_intel_mid_early_setup();
+ break;
+ default:
+ break;
+ }
+
start_kernel();
}
--
2.7.0.rc3