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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>
This commit is contained in:
Jonathan Austin 2014-01-13 12:10:57 +01:00 committed by Russell King
parent b28a960c42
commit ddb2ff731b
2 changed files with 12 additions and 0 deletions
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1
arch/arm/include/asm/cputype.h
View File

@ -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

11
arch/arm/mm/proc-v7.S
View File

@ -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.
*/