On 12/01/2015 05:24 PM, Kapil Hali wrote:
> From: Jon Mason <jonmason@xxxxxxxxxxxx>
>
> Add SMP support for Broadcom's 4708 SoCs.
>
> Signed-off-by: Jon Mason <jonmason@xxxxxxxxxxxx>
> Acked-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
> Tested-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
> Signed-off-by: Kapil Hali <kapilh@xxxxxxxxxxxx>
> ---
> arch/arm/boot/dts/bcm4708.dtsi | 2 ++
> arch/arm/mach-bcm/Kconfig | 1 +
> arch/arm/mach-bcm/Makefile | 3 +++
> 3 files changed, 6 insertions(+)
>
> diff --git a/arch/arm/boot/dts/bcm4708.dtsi b/arch/arm/boot/dts/bcm4708.dtsi
> index 31141e8..eed4dd1 100644
> --- a/arch/arm/boot/dts/bcm4708.dtsi
> +++ b/arch/arm/boot/dts/bcm4708.dtsi
> @@ -15,6 +15,7 @@
> cpus {
> #address-cells = <1>;
> #size-cells = <0>;
> + enable-method = "brcm,bcm-nsp-smp";
>
> cpu@0 {
> device_type = "cpu";
> @@ -27,6 +28,7 @@
> device_type = "cpu";
> compatible = "arm,cortex-a9";
> next-level-cache = <&L2>;
> + secondary-boot-reg = <0xffff0400>;
> reg = <0x1>;
> };
> };
> diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
> index 83765a0..e85246f 100644
> --- a/arch/arm/mach-bcm/Kconfig
> +++ b/arch/arm/mach-bcm/Kconfig
> @@ -54,6 +54,7 @@ config ARCH_BCM_NSP
> config ARCH_BCM_5301X
> bool "Broadcom BCM470X / BCM5301X ARM SoC" if ARCH_MULTI_V7
> select ARCH_BCM_IPROC
> + select HAVE_SMP
> help
> Support for Broadcom BCM470X and BCM5301X SoCs with ARM CPU cores.
>
When applying this patch please make sure it is correctly applied this
patch causes some problems here:
http://www.spinics.net/lists/arm-kernel/msg462137.html
> diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
> index 5193a25..7d66515 100644
> --- a/arch/arm/mach-bcm/Makefile
> +++ b/arch/arm/mach-bcm/Makefile
> @@ -43,6 +43,9 @@ obj-$(CONFIG_ARCH_BCM2835) += board_bcm2835.o
>
> # BCM5301X
> obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o
> +ifeq ($(CONFIG_ARCH_BCM_5301X),y)
> +obj-$(CONFIG_SMP) += platsmp.o
> +endif
>
> # BCM63XXx
> ifeq ($(CONFIG_ARCH_BCM_63XX),y)
>
I am getting this on a Northstar 1 / BCM4708:
[ 0.137634] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.143643] Setting up static identity map for 0x82a0 - 0x82d4
[ 0.189772] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.189861] Brought up 2 CPUs
[ 0.198845] SMP: Total of 2 processors activated (3188.32 BogoMIPS).
[ 0.205446] CPU: WARNING: CPU(s) started in wrong/inconsistent modes
(primary CPU mode 0x13)
[ 0.214167] CPU: This may indicate a broken bootloader or firmware.
I assume that this is correct and the bootloader is just broken, it uses
this bootloader: "CFE for Foxconn Router version: v1.0.14", I haven't
noticed any problems, so it is ok for me.
Hauke
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