ARM: 7940/1: add support for the Cortex-A12 processor

The A12 behaves as the A7/A15 does with respect to setting the SMP bit, and
doesn't require TLB ops broadcasting to be explicitly enabled like the A9 does.

Note that as the ACTLR cannot (usually) be written from non-secure, it is the
responsibility of the bootloader/firmware to set this bit per core - it is
done here in Linux as last resort in case of bad firmware.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index acdde76b39bbae3064034fff78b9dd2b95bbd39c..42f0889f058456be8e1c34705ae0e2aa12364baf 100644 (file)
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -71,6 +71,7 @@
 #define ARM_CPU_PART_CORTEX_A5         0xC050
 #define ARM_CPU_PART_CORTEX_A15                0xC0F0
 #define ARM_CPU_PART_CORTEX_A7         0xC070
+#define ARM_CPU_PART_CORTEX_A12                0xC0D0
 
 #define ARM_CPU_XSCALE_ARCH_MASK       0xe000
 #define ARM_CPU_XSCALE_ARCH_V1         0x2000

diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index bd1781979a391825043d078192666e5a846cdae5..7f9de7e88cd30b5a362324865113cf1316337b1a 100644 (file)
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -192,6 +192,7 @@ __v7_cr7mp_setup:
        mov     r10, #(1 << 0)                  @ Cache/TLB ops broadcasting
        b       1f
 __v7_ca7mp_setup:
+__v7_ca12mp_setup:
 __v7_ca15mp_setup:
        mov     r10, #0
 1:
@@ -483,6 +484,16 @@ __v7_ca7mp_proc_info:
        __v7_proc __v7_ca7mp_setup
        .size   __v7_ca7mp_proc_info, . - __v7_ca7mp_proc_info
 
+       /*
+        * ARM Ltd. Cortex A12 processor.
+        */
+       .type   __v7_ca12mp_proc_info, #object
+__v7_ca12mp_proc_info:
+       .long   0x410fc0d0
+       .long   0xff0ffff0
+       __v7_proc __v7_ca12mp_setup
+       .size   __v7_ca12mp_proc_info, . - __v7_ca12mp_proc_info
+
        /*
         * ARM Ltd. Cortex A15 processor.
         */