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| author |   Vineet Gupta <vgupta@synopsys.com> | 2016-09-29 10:00:14 -0700 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2016-10-16 15:49:07 -0700 |
| commit | 3ce0fefc51bd56381b1b9a92835cf8f9db3f2ef8 (patch) | |
| tree | c425859767f89b65b4d11b41325632ffd82afffb /arch/arc/Kconfig | |
| parent | Linux 4.9-rc1 (diff) | |
| download | linux-dev-3ce0fefc51bd56381b1b9a92835cf8f9db3f2ef8.tar.xz linux-dev-3ce0fefc51bd56381b1b9a92835cf8f9db3f2ef8.zip | |
ARCv2: intc: untangle SMP, MCIP and IDU
The IDU intc is technically part of MCIP (Multi-core IP) hence
historically was only available in a SMP hardware build (and thus only
in a SMP kernel build). Now that hardware restriction has been lifted,
so a UP kernel needs to support it.
This requires breaking mcip.c into parts which are strictly SMP
(inter-core interrupts) and IDU which in reality is just another
intc and thus has no bearing on SMP.
This change allows IDU in UP builds and with a suitable device tree, we
can have the cascaded intc system
ARCv2 core intc <---> ARCv2 IDU intc <---> periperals
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/arc/Kconfig | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index ecd12379e2cd..6f67895cd9c4 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -186,14 +186,6 @@ if SMP config ARC_HAS_COH_CACHES def_bool n -config ARC_MCIP - bool "ARConnect Multicore IP (MCIP) Support " - depends on ISA_ARCV2 - help - This IP block enables SMP in ARC-HS38 cores. - It provides for cross-core interrupts, multi-core debug - hardware semaphores, shared memory,.... - config NR_CPUS int "Maximum number of CPUs (2-4096)" range 2 4096 @@ -211,6 +203,15 @@ config ARC_SMP_HALT_ON_RESET endif #SMP +config ARC_MCIP + bool "ARConnect Multicore IP (MCIP) Support " + depends on ISA_ARCV2 + default y if SMP + help + This IP block enables SMP in ARC-HS38 cores. + It provides for cross-core interrupts, multi-core debug + hardware semaphores, shared memory,.... + menuconfig ARC_CACHE bool "Enable Cache Support" default y |