From 7665d9d2df2eb26284467c2f8591004bd511c75f Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 12 Jan 2011 17:10:45 +0000 Subject: ARM: proc: add proc info for Cortex-A15MP using classic page tables Multicore implementations of the Cortex-A15 require bit 6 of the auxiliary control register to be set in order for cache and TLB maintenance operations to be broadcast between CPUs. This patch adds a new proc_info structure for Cortex-A15, which enables the SMP bit during setup and includes the new HWCAP for integer division. Signed-off-by: Will Deacon --- arch/arm/mm/proc-v7.S | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 3185da27a537..593285419e75 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -280,12 +280,18 @@ cpu_resume_l1_flags: */ __v7_ca5mp_setup: __v7_ca9mp_setup: + mov r10, #(1 << 0) @ TLB ops broadcasting + b 1f +__v7_ca15mp_setup: + mov r10, #0 +1: #ifdef CONFIG_SMP ALT_SMP(mrc p15, 0, r0, c1, c0, 1) ALT_UP(mov r0, #(1 << 6)) @ fake it for UP tst r0, #(1 << 6) @ SMP/nAMP mode enabled? - orreq r0, r0, #(1 << 6) | (1 << 0) @ Enable SMP/nAMP mode and - mcreq p15, 0, r0, c1, c0, 1 @ TLB ops broadcasting + orreq r0, r0, #(1 << 6) @ Enable SMP/nAMP mode + orreq r0, r0, r10 @ Enable CPU-specific SMP bits + mcreq p15, 0, r0, c1, c0, 1 #endif __v7_setup: adr r12, __v7_setup_stack @ the local stack @@ -464,6 +470,16 @@ __v7_ca9mp_proc_info: __v7_proc __v7_ca9mp_setup .size __v7_ca9mp_proc_info, . - __v7_ca9mp_proc_info + /* + * ARM Ltd. Cortex A15 processor. + */ + .type __v7_ca15mp_proc_info, #object +__v7_ca15mp_proc_info: + .long 0x410fc0f0 + .long 0xff0ffff0 + __v7_proc __v7_ca15mp_setup, hwcaps = HWCAP_IDIV + .size __v7_ca15mp_proc_info, . - __v7_ca15mp_proc_info + /* * Match any ARMv7 processor core. */ -- cgit v1.2.3