Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On 10/28/2015 03:24 PM, Kapil Hali wrote: > > > On 10/16/2015 2:47 AM, Jon Mason wrote: >> On Thu, Oct 15, 2015 at 11:12:09PM +0200, Hauke Mehrtens wrote: >>> On 10/15/2015 06:10 PM, Kapil Hali wrote: On 10/15/2015 3:56 AM, Hauke Mehrtens wrote: > On 10/14/2015 07:47 PM, Kapil Hali wrote: >> Add SMP support for Broadcom's Northstar Plus SoC, >> cpu enable method and pen_release procedures. This >> changes also consolidates iProc family's - BCM NSP >> and BCM Kona, SMP handling in a common file. > > This will probably also work on normal Northstar CPUs without changes. > I think, it should work for most of the variants of Northstar family, except for those which have a BOOTROM bug. >>> >>> Which SoC are affected by this BOOTROM bug? >> >> 53012 is the one I am seeing. Not seeing it on 4708 (and assuming it is >> not present on 4709). Internally, we do the ugly bug workaround on >> all Northstar SoCs. The workaround is not acceptable upstream, so I >> am not pushing it. :) >> >> Thanks, >> Jon >> > > Hi Hauke, > > Now that you have tested Jon's patch which is based on my changes for > SMP, shall I take his changes and add it on top of my changes and resend? > Also, do I consider your Acked-by and Tested-by for the change? > > Thanks, > Kapil > Hi Kapil, I tested this on Northstar 1. Acked-by: Hauke Mehrtens Tested-by: Hauke Mehrtens I think Florian has to take the patches and you should hurry up because the merge window probably opens on Monday. You can send all patches again with the bcm501x patch or just that one, I assume there are no changes needed for the other patches? Hauke -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On 10/16/2015 2:47 AM, Jon Mason wrote:
> On Thu, Oct 15, 2015 at 11:12:09PM +0200, Hauke Mehrtens wrote:
>> On 10/15/2015 06:10 PM, Kapil Hali wrote:
>>>
>>>
>>> On 10/15/2015 3:56 AM, Hauke Mehrtens wrote:
On 10/14/2015 07:47 PM, Kapil Hali wrote:
> Add SMP support for Broadcom's Northstar Plus SoC,
> cpu enable method and pen_release procedures. This
> changes also consolidates iProc family's - BCM NSP
> and BCM Kona, SMP handling in a common file.
This will probably also work on normal Northstar CPUs without changes.
>>> I think, it should work for most of the variants of Northstar family,
>>> except for those which have a BOOTROM bug.
>>
>> Which SoC are affected by this BOOTROM bug?
>
> 53012 is the one I am seeing. Not seeing it on 4708 (and assuming it is
> not present on 4709). Internally, we do the ugly bug workaround on
> all Northstar SoCs. The workaround is not acceptable upstream, so I
> am not pushing it. :)
>
> Thanks,
> Jon
>
Hi Hauke,
Now that you have tested Jon's patch which is based on my changes for
SMP, shall I take his changes and add it on top of my changes and resend?
Also, do I consider your Acked-by and Tested-by for the change?
Thanks,
Kapil
>>
> Northstar Plus SoC is based on ARM Cortex-A9
> revision r3p0 which requires configuration for ARM
> Errata 764369 for SMP. This change adds the needed
> configuration option.
>
> Signed-off-by: Kapil Hali
> ---
> arch/arm/mach-bcm/Kconfig | 2 +
> arch/arm/mach-bcm/Makefile | 8 +-
> arch/arm/mach-bcm/bcm_nsp.h | 19
> arch/arm/mach-bcm/headsmp.S | 37
> arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142
> ++--
> 5 files changed, 197 insertions(+), 11 deletions(-)
> create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
> create mode 100644 arch/arm/mach-bcm/headsmp.S
> rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
>
> diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
> index 1679fa4..2e9dbb5 100644
> --- a/arch/arm/mach-bcm/Kconfig
> +++ b/arch/arm/mach-bcm/Kconfig
> @@ -40,6 +40,8 @@ config ARCH_BCM_NSP
> select ARCH_BCM_IPROC
> select ARM_ERRATA_754322
> select ARM_ERRATA_775420
> + select ARM_ERRATA_764369 if SMP
> + select HAVE_SMP
> help
> Support for Broadcom Northstar Plus SoC.
> Broadcom Northstar Plus family of SoCs are used for switching control
> diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
> index 892261f..36a4ca30 100644
> --- a/arch/arm/mach-bcm/Makefile
> +++ b/arch/arm/mach-bcm/Makefile
> @@ -14,7 +14,11 @@
> obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
>
> # Northstar Plus
> -obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> +obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> +
> +ifeq ($(CONFIG_ARCH_BCM_NSP),y)
> +obj-$(CONFIG_SMP)+= headsmp.o platsmp.o
> +endif
>
> # BCM281XX
> obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
> @@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX)+= board_bcm281xx.o
> obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
>
> # BCM281XX and BCM21664 SMP support
> -obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
> +obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
>
> # BCM281XX and BCM21664 L2 cache control
> obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
> diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
> new file mode 100644
> index 000..58e1e80
> --- /dev/null
> +++ b/arch/arm/mach-bcm/bcm_nsp.h
> @@ -0,0 +1,19 @@
> +/*
> + * Copyright (C) 2015 Broadcom Corporation
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation version 2.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> + * kind, whether express or implied; without even the implied warranty
> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef __BCM_NSP_H
> +#define __BCM_NSP_H
> +
> +extern void nsp_secondary_startup(void);
> +
> +#endif /* __BCM_NSP_H */
> diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
> new file mode 100644
> index 000..0da13b2
> --- /dev/null
> +++ b/arch/arm/mach-bcm/headsmp.S
> @@ -0,0 +1,37 @@
> +/*
> + * Copyright (C) 2015 Broadcom Corporation
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public Lice
Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On Thu, Oct 15, 2015 at 11:12:09PM +0200, Hauke Mehrtens wrote:
> On 10/15/2015 06:10 PM, Kapil Hali wrote:
> >
> >
> > On 10/15/2015 3:56 AM, Hauke Mehrtens wrote:
> >> On 10/14/2015 07:47 PM, Kapil Hali wrote:
> >>> Add SMP support for Broadcom's Northstar Plus SoC,
> >>> cpu enable method and pen_release procedures. This
> >>> changes also consolidates iProc family's - BCM NSP
> >>> and BCM Kona, SMP handling in a common file.
> >>
> >> This will probably also work on normal Northstar CPUs without changes.
> >>
> > I think, it should work for most of the variants of Northstar family,
> > except for those which have a BOOTROM bug.
>
> Which SoC are affected by this BOOTROM bug?
53012 is the one I am seeing. Not seeing it on 4708 (and assuming it is
not present on 4709). Internally, we do the ugly bug workaround on
all Northstar SoCs. The workaround is not acceptable upstream, so I
am not pushing it. :)
Thanks,
Jon
>
> >>> Northstar Plus SoC is based on ARM Cortex-A9
> >>> revision r3p0 which requires configuration for ARM
> >>> Errata 764369 for SMP. This change adds the needed
> >>> configuration option.
> >>>
> >>> Signed-off-by: Kapil Hali
> >>> ---
> >>> arch/arm/mach-bcm/Kconfig | 2 +
> >>> arch/arm/mach-bcm/Makefile | 8 +-
> >>> arch/arm/mach-bcm/bcm_nsp.h | 19
> >>> arch/arm/mach-bcm/headsmp.S | 37
> >>> arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142
> >>> ++--
> >>> 5 files changed, 197 insertions(+), 11 deletions(-)
> >>> create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
> >>> create mode 100644 arch/arm/mach-bcm/headsmp.S
> >>> rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
> >>>
> >>> diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
> >>> index 1679fa4..2e9dbb5 100644
> >>> --- a/arch/arm/mach-bcm/Kconfig
> >>> +++ b/arch/arm/mach-bcm/Kconfig
> >>> @@ -40,6 +40,8 @@ config ARCH_BCM_NSP
> >>> select ARCH_BCM_IPROC
> >>> select ARM_ERRATA_754322
> >>> select ARM_ERRATA_775420
> >>> + select ARM_ERRATA_764369 if SMP
> >>> + select HAVE_SMP
> >>> help
> >>> Support for Broadcom Northstar Plus SoC.
> >>> Broadcom Northstar Plus family of SoCs are used for switching control
> >>> diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
> >>> index 892261f..36a4ca30 100644
> >>> --- a/arch/arm/mach-bcm/Makefile
> >>> +++ b/arch/arm/mach-bcm/Makefile
> >>> @@ -14,7 +14,11 @@
> >>> obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
> >>>
> >>> # Northstar Plus
> >>> -obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> >>> +obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> >>> +
> >>> +ifeq ($(CONFIG_ARCH_BCM_NSP),y)
> >>> +obj-$(CONFIG_SMP)+= headsmp.o platsmp.o
> >>> +endif
> >>>
> >>> # BCM281XX
> >>> obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
> >>> @@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX)+= board_bcm281xx.o
> >>> obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
> >>>
> >>> # BCM281XX and BCM21664 SMP support
> >>> -obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
> >>> +obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
> >>>
> >>> # BCM281XX and BCM21664 L2 cache control
> >>> obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
> >>> diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
> >>> new file mode 100644
> >>> index 000..58e1e80
> >>> --- /dev/null
> >>> +++ b/arch/arm/mach-bcm/bcm_nsp.h
> >>> @@ -0,0 +1,19 @@
> >>> +/*
> >>> + * Copyright (C) 2015 Broadcom Corporation
> >>> + *
> >>> + * This program is free software; you can redistribute it and/or
> >>> + * modify it under the terms of the GNU General Public License as
> >>> + * published by the Free Software Foundation version 2.
> >>> + *
> >>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> >>> + * kind, whether express or implied; without even the implied warranty
> >>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> >>> + * GNU General Public License for more details.
> >>> + */
> >>> +
> >>> +#ifndef __BCM_NSP_H
> >>> +#define __BCM_NSP_H
> >>> +
> >>> +extern void nsp_secondary_startup(void);
> >>> +
> >>> +#endif /* __BCM_NSP_H */
> >>> diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
> >>> new file mode 100644
> >>> index 000..0da13b2
> >>> --- /dev/null
> >>> +++ b/arch/arm/mach-bcm/headsmp.S
> >>> @@ -0,0 +1,37 @@
> >>> +/*
> >>> + * Copyright (C) 2015 Broadcom Corporation
> >>> + *
> >>> + * This program is free software; you can redistribute it and/or
> >>> + * modify it under the terms of the GNU General Public License as
> >>> + * published by the Free Software Foundation version 2.
> >>> + *
> >>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> >>> + * kind, whether express or implied; without even the implied warranty
> >>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On 10/15/2015 06:10 PM, Kapil Hali wrote:
>
>
> On 10/15/2015 3:56 AM, Hauke Mehrtens wrote:
>> On 10/14/2015 07:47 PM, Kapil Hali wrote:
>>> Add SMP support for Broadcom's Northstar Plus SoC,
>>> cpu enable method and pen_release procedures. This
>>> changes also consolidates iProc family's - BCM NSP
>>> and BCM Kona, SMP handling in a common file.
>>
>> This will probably also work on normal Northstar CPUs without changes.
>>
> I think, it should work for most of the variants of Northstar family,
> except for those which have a BOOTROM bug.
Which SoC are affected by this BOOTROM bug?
>>> Northstar Plus SoC is based on ARM Cortex-A9
>>> revision r3p0 which requires configuration for ARM
>>> Errata 764369 for SMP. This change adds the needed
>>> configuration option.
>>>
>>> Signed-off-by: Kapil Hali
>>> ---
>>> arch/arm/mach-bcm/Kconfig | 2 +
>>> arch/arm/mach-bcm/Makefile | 8 +-
>>> arch/arm/mach-bcm/bcm_nsp.h | 19
>>> arch/arm/mach-bcm/headsmp.S | 37
>>> arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142
>>> ++--
>>> 5 files changed, 197 insertions(+), 11 deletions(-)
>>> create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
>>> create mode 100644 arch/arm/mach-bcm/headsmp.S
>>> rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
>>>
>>> diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
>>> index 1679fa4..2e9dbb5 100644
>>> --- a/arch/arm/mach-bcm/Kconfig
>>> +++ b/arch/arm/mach-bcm/Kconfig
>>> @@ -40,6 +40,8 @@ config ARCH_BCM_NSP
>>> select ARCH_BCM_IPROC
>>> select ARM_ERRATA_754322
>>> select ARM_ERRATA_775420
>>> + select ARM_ERRATA_764369 if SMP
>>> + select HAVE_SMP
>>> help
>>> Support for Broadcom Northstar Plus SoC.
>>> Broadcom Northstar Plus family of SoCs are used for switching control
>>> diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
>>> index 892261f..36a4ca30 100644
>>> --- a/arch/arm/mach-bcm/Makefile
>>> +++ b/arch/arm/mach-bcm/Makefile
>>> @@ -14,7 +14,11 @@
>>> obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
>>>
>>> # Northstar Plus
>>> -obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
>>> +obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
>>> +
>>> +ifeq ($(CONFIG_ARCH_BCM_NSP),y)
>>> +obj-$(CONFIG_SMP) += headsmp.o platsmp.o
>>> +endif
>>>
>>> # BCM281XX
>>> obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
>>> @@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
>>> obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
>>>
>>> # BCM281XX and BCM21664 SMP support
>>> -obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
>>> +obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
>>>
>>> # BCM281XX and BCM21664 L2 cache control
>>> obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
>>> diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
>>> new file mode 100644
>>> index 000..58e1e80
>>> --- /dev/null
>>> +++ b/arch/arm/mach-bcm/bcm_nsp.h
>>> @@ -0,0 +1,19 @@
>>> +/*
>>> + * Copyright (C) 2015 Broadcom Corporation
>>> + *
>>> + * This program is free software; you can redistribute it and/or
>>> + * modify it under the terms of the GNU General Public License as
>>> + * published by the Free Software Foundation version 2.
>>> + *
>>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
>>> + * kind, whether express or implied; without even the implied warranty
>>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>> + * GNU General Public License for more details.
>>> + */
>>> +
>>> +#ifndef __BCM_NSP_H
>>> +#define __BCM_NSP_H
>>> +
>>> +extern void nsp_secondary_startup(void);
>>> +
>>> +#endif /* __BCM_NSP_H */
>>> diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
>>> new file mode 100644
>>> index 000..0da13b2
>>> --- /dev/null
>>> +++ b/arch/arm/mach-bcm/headsmp.S
>>> @@ -0,0 +1,37 @@
>>> +/*
>>> + * Copyright (C) 2015 Broadcom Corporation
>>> + *
>>> + * This program is free software; you can redistribute it and/or
>>> + * modify it under the terms of the GNU General Public License as
>>> + * published by the Free Software Foundation version 2.
>>> + *
>>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
>>> + * kind, whether express or implied; without even the implied warranty
>>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>> + * GNU General Public License for more details.
>>> + */
>>> +
>>> +#include
>>> +
>>> +/*
>>> + * iProc specific entry point for secondary CPUs. This provides
>>> + * a "holding pen" into which all secondary cores are held until
>>> + * we are ready for them to initialise.
>>> + */
>>> +ENTRY(nsp_secondary_startup)
>>> + mrc p15, 0, r0, c0, c0, 5
>>> + and r0, r0, #15
>>> + adr r4, 1f
>>> + ldmia r4, {r5, r6}
>>> + sub r4, r4, r5
>>> + add r6, r6, r4
>>> +pen: ldr r
Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On 10/15/2015 3:56 AM, Hauke Mehrtens wrote:
> On 10/14/2015 07:47 PM, Kapil Hali wrote:
>> Add SMP support for Broadcom's Northstar Plus SoC,
>> cpu enable method and pen_release procedures. This
>> changes also consolidates iProc family's - BCM NSP
>> and BCM Kona, SMP handling in a common file.
>
> This will probably also work on normal Northstar CPUs without changes.
>
I think, it should work for most of the variants of Northstar family,
except for those which have a BOOTROM bug.
>> Northstar Plus SoC is based on ARM Cortex-A9
>> revision r3p0 which requires configuration for ARM
>> Errata 764369 for SMP. This change adds the needed
>> configuration option.
>>
>> Signed-off-by: Kapil Hali
>> ---
>> arch/arm/mach-bcm/Kconfig | 2 +
>> arch/arm/mach-bcm/Makefile | 8 +-
>> arch/arm/mach-bcm/bcm_nsp.h | 19
>> arch/arm/mach-bcm/headsmp.S | 37
>> arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142
>> ++--
>> 5 files changed, 197 insertions(+), 11 deletions(-)
>> create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
>> create mode 100644 arch/arm/mach-bcm/headsmp.S
>> rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
>>
>> diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
>> index 1679fa4..2e9dbb5 100644
>> --- a/arch/arm/mach-bcm/Kconfig
>> +++ b/arch/arm/mach-bcm/Kconfig
>> @@ -40,6 +40,8 @@ config ARCH_BCM_NSP
>> select ARCH_BCM_IPROC
>> select ARM_ERRATA_754322
>> select ARM_ERRATA_775420
>> +select ARM_ERRATA_764369 if SMP
>> +select HAVE_SMP
>> help
>>Support for Broadcom Northstar Plus SoC.
>>Broadcom Northstar Plus family of SoCs are used for switching control
>> diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
>> index 892261f..36a4ca30 100644
>> --- a/arch/arm/mach-bcm/Makefile
>> +++ b/arch/arm/mach-bcm/Makefile
>> @@ -14,7 +14,11 @@
>> obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
>>
>> # Northstar Plus
>> -obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
>> +obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
>> +
>> +ifeq ($(CONFIG_ARCH_BCM_NSP),y)
>> +obj-$(CONFIG_SMP) += headsmp.o platsmp.o
>> +endif
>>
>> # BCM281XX
>> obj-$(CONFIG_ARCH_BCM_281XX)+= board_bcm281xx.o
>> @@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
>> obj-$(CONFIG_ARCH_BCM_21664)+= board_bcm21664.o
>>
>> # BCM281XX and BCM21664 SMP support
>> -obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
>> +obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
>>
>> # BCM281XX and BCM21664 L2 cache control
>> obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
>> diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
>> new file mode 100644
>> index 000..58e1e80
>> --- /dev/null
>> +++ b/arch/arm/mach-bcm/bcm_nsp.h
>> @@ -0,0 +1,19 @@
>> +/*
>> + * Copyright (C) 2015 Broadcom Corporation
>> + *
>> + * This program is free software; you can redistribute it and/or
>> + * modify it under the terms of the GNU General Public License as
>> + * published by the Free Software Foundation version 2.
>> + *
>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
>> + * kind, whether express or implied; without even the implied warranty
>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + */
>> +
>> +#ifndef __BCM_NSP_H
>> +#define __BCM_NSP_H
>> +
>> +extern void nsp_secondary_startup(void);
>> +
>> +#endif /* __BCM_NSP_H */
>> diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
>> new file mode 100644
>> index 000..0da13b2
>> --- /dev/null
>> +++ b/arch/arm/mach-bcm/headsmp.S
>> @@ -0,0 +1,37 @@
>> +/*
>> + * Copyright (C) 2015 Broadcom Corporation
>> + *
>> + * This program is free software; you can redistribute it and/or
>> + * modify it under the terms of the GNU General Public License as
>> + * published by the Free Software Foundation version 2.
>> + *
>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
>> + * kind, whether express or implied; without even the implied warranty
>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + */
>> +
>> +#include
>> +
>> +/*
>> + * iProc specific entry point for secondary CPUs. This provides
>> + * a "holding pen" into which all secondary cores are held until
>> + * we are ready for them to initialise.
>> + */
>> +ENTRY(nsp_secondary_startup)
>> +mrc p15, 0, r0, c0, c0, 5
>> +and r0, r0, #15
>> +adr r4, 1f
>> +ldmia r4, {r5, r6}
>> +sub r4, r4, r5
>> +add r6, r6, r4
>> +pen:ldr r7, [r6]
>> +cmp r7, r0
>> +bne pen
>> +
>> +bsecondary_startup
>> +
>> +1: .long .
>> +.long pen_release
>> +
>> +ENDPROC(nsp_secondary_startup)
>> diff --git a/arch/
Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On Wed, Oct 14, 2015 at 06:40:04PM -0400, Jon Mason wrote:
> On Thu, Oct 15, 2015 at 12:26:25AM +0200, Hauke Mehrtens wrote:
> > On 10/14/2015 07:47 PM, Kapil Hali wrote:
> > > Add SMP support for Broadcom's Northstar Plus SoC,
> > > cpu enable method and pen_release procedures. This
> > > changes also consolidates iProc family's - BCM NSP
> > > and BCM Kona, SMP handling in a common file.
> >
> > This will probably also work on normal Northstar CPUs without changes.
>
> I think all that needs to be changed is adding to
> arch/arm/boot/dts/bcm4708.dts
>
> + enable-method = "brcm,bcm-nsp-smp";
> + secondary-boot-reg = <0x0400>;
>
> But I have not been able to confirm that yet.
I was able to confirm it on my BCM94708 SVK. I'll send out the patch
which enables it shortly.
Thanks,
Jon
>
> Thanks,
> Jon
>
> >
> > > Northstar Plus SoC is based on ARM Cortex-A9
> > > revision r3p0 which requires configuration for ARM
> > > Errata 764369 for SMP. This change adds the needed
> > > configuration option.
> > >
> > > Signed-off-by: Kapil Hali
> > > ---
> > > arch/arm/mach-bcm/Kconfig | 2 +
> > > arch/arm/mach-bcm/Makefile | 8 +-
> > > arch/arm/mach-bcm/bcm_nsp.h | 19
> > > arch/arm/mach-bcm/headsmp.S | 37
> > > arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142
> > > ++--
> > > 5 files changed, 197 insertions(+), 11 deletions(-)
> > > create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
> > > create mode 100644 arch/arm/mach-bcm/headsmp.S
> > > rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
> > >
> > > diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
> > > index 1679fa4..2e9dbb5 100644
> > > --- a/arch/arm/mach-bcm/Kconfig
> > > +++ b/arch/arm/mach-bcm/Kconfig
> > > @@ -40,6 +40,8 @@ config ARCH_BCM_NSP
> > > select ARCH_BCM_IPROC
> > > select ARM_ERRATA_754322
> > > select ARM_ERRATA_775420
> > > + select ARM_ERRATA_764369 if SMP
> > > + select HAVE_SMP
> > > help
> > > Support for Broadcom Northstar Plus SoC.
> > > Broadcom Northstar Plus family of SoCs are used for switching control
> > > diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
> > > index 892261f..36a4ca30 100644
> > > --- a/arch/arm/mach-bcm/Makefile
> > > +++ b/arch/arm/mach-bcm/Makefile
> > > @@ -14,7 +14,11 @@
> > > obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
> > >
> > > # Northstar Plus
> > > -obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> > > +obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> > > +
> > > +ifeq ($(CONFIG_ARCH_BCM_NSP),y)
> > > +obj-$(CONFIG_SMP)+= headsmp.o platsmp.o
> > > +endif
> > >
> > > # BCM281XX
> > > obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
> > > @@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX)+= board_bcm281xx.o
> > > obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
> > >
> > > # BCM281XX and BCM21664 SMP support
> > > -obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
> > > +obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
> > >
> > > # BCM281XX and BCM21664 L2 cache control
> > > obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
> > > diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
> > > new file mode 100644
> > > index 000..58e1e80
> > > --- /dev/null
> > > +++ b/arch/arm/mach-bcm/bcm_nsp.h
> > > @@ -0,0 +1,19 @@
> > > +/*
> > > + * Copyright (C) 2015 Broadcom Corporation
> > > + *
> > > + * This program is free software; you can redistribute it and/or
> > > + * modify it under the terms of the GNU General Public License as
> > > + * published by the Free Software Foundation version 2.
> > > + *
> > > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> > > + * kind, whether express or implied; without even the implied warranty
> > > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > > + * GNU General Public License for more details.
> > > + */
> > > +
> > > +#ifndef __BCM_NSP_H
> > > +#define __BCM_NSP_H
> > > +
> > > +extern void nsp_secondary_startup(void);
> > > +
> > > +#endif /* __BCM_NSP_H */
> > > diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
> > > new file mode 100644
> > > index 000..0da13b2
> > > --- /dev/null
> > > +++ b/arch/arm/mach-bcm/headsmp.S
> > > @@ -0,0 +1,37 @@
> > > +/*
> > > + * Copyright (C) 2015 Broadcom Corporation
> > > + *
> > > + * This program is free software; you can redistribute it and/or
> > > + * modify it under the terms of the GNU General Public License as
> > > + * published by the Free Software Foundation version 2.
> > > + *
> > > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> > > + * kind, whether express or implied; without even the implied warranty
> > > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > > + * GNU General Public License for more details.
> > > + */
> > > +
Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On Thu, Oct 15, 2015 at 12:26:25AM +0200, Hauke Mehrtens wrote:
> On 10/14/2015 07:47 PM, Kapil Hali wrote:
> > Add SMP support for Broadcom's Northstar Plus SoC,
> > cpu enable method and pen_release procedures. This
> > changes also consolidates iProc family's - BCM NSP
> > and BCM Kona, SMP handling in a common file.
>
> This will probably also work on normal Northstar CPUs without changes.
I think all that needs to be changed is adding to
arch/arm/boot/dts/bcm4708.dts
+ enable-method = "brcm,bcm-nsp-smp";
+ secondary-boot-reg = <0x0400>;
But I have not been able to confirm that yet.
Thanks,
Jon
>
> > Northstar Plus SoC is based on ARM Cortex-A9
> > revision r3p0 which requires configuration for ARM
> > Errata 764369 for SMP. This change adds the needed
> > configuration option.
> >
> > Signed-off-by: Kapil Hali
> > ---
> > arch/arm/mach-bcm/Kconfig | 2 +
> > arch/arm/mach-bcm/Makefile | 8 +-
> > arch/arm/mach-bcm/bcm_nsp.h | 19
> > arch/arm/mach-bcm/headsmp.S | 37
> > arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142
> > ++--
> > 5 files changed, 197 insertions(+), 11 deletions(-)
> > create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
> > create mode 100644 arch/arm/mach-bcm/headsmp.S
> > rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
> >
> > diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
> > index 1679fa4..2e9dbb5 100644
> > --- a/arch/arm/mach-bcm/Kconfig
> > +++ b/arch/arm/mach-bcm/Kconfig
> > @@ -40,6 +40,8 @@ config ARCH_BCM_NSP
> > select ARCH_BCM_IPROC
> > select ARM_ERRATA_754322
> > select ARM_ERRATA_775420
> > + select ARM_ERRATA_764369 if SMP
> > + select HAVE_SMP
> > help
> > Support for Broadcom Northstar Plus SoC.
> > Broadcom Northstar Plus family of SoCs are used for switching control
> > diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
> > index 892261f..36a4ca30 100644
> > --- a/arch/arm/mach-bcm/Makefile
> > +++ b/arch/arm/mach-bcm/Makefile
> > @@ -14,7 +14,11 @@
> > obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
> >
> > # Northstar Plus
> > -obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> > +obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> > +
> > +ifeq ($(CONFIG_ARCH_BCM_NSP),y)
> > +obj-$(CONFIG_SMP) += headsmp.o platsmp.o
> > +endif
> >
> > # BCM281XX
> > obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
> > @@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
> > obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
> >
> > # BCM281XX and BCM21664 SMP support
> > -obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
> > +obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
> >
> > # BCM281XX and BCM21664 L2 cache control
> > obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
> > diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
> > new file mode 100644
> > index 000..58e1e80
> > --- /dev/null
> > +++ b/arch/arm/mach-bcm/bcm_nsp.h
> > @@ -0,0 +1,19 @@
> > +/*
> > + * Copyright (C) 2015 Broadcom Corporation
> > + *
> > + * This program is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU General Public License as
> > + * published by the Free Software Foundation version 2.
> > + *
> > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> > + * kind, whether express or implied; without even the implied warranty
> > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + * GNU General Public License for more details.
> > + */
> > +
> > +#ifndef __BCM_NSP_H
> > +#define __BCM_NSP_H
> > +
> > +extern void nsp_secondary_startup(void);
> > +
> > +#endif /* __BCM_NSP_H */
> > diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
> > new file mode 100644
> > index 000..0da13b2
> > --- /dev/null
> > +++ b/arch/arm/mach-bcm/headsmp.S
> > @@ -0,0 +1,37 @@
> > +/*
> > + * Copyright (C) 2015 Broadcom Corporation
> > + *
> > + * This program is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU General Public License as
> > + * published by the Free Software Foundation version 2.
> > + *
> > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> > + * kind, whether express or implied; without even the implied warranty
> > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + * GNU General Public License for more details.
> > + */
> > +
> > +#include
> > +
> > +/*
> > + * iProc specific entry point for secondary CPUs. This provides
> > + * a "holding pen" into which all secondary cores are held until
> > + * we are ready for them to initialise.
> > + */
> > +ENTRY(nsp_secondary_startup)
> > + mrc p15, 0, r0, c0, c0, 5
> > + and r0, r0, #15
> > + adr r4, 1f
> > + ldmia r4, {r5, r6}
> > + sub r4, r4, r5
>
Re: [PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
On 10/14/2015 07:47 PM, Kapil Hali wrote:
> Add SMP support for Broadcom's Northstar Plus SoC,
> cpu enable method and pen_release procedures. This
> changes also consolidates iProc family's - BCM NSP
> and BCM Kona, SMP handling in a common file.
This will probably also work on normal Northstar CPUs without changes.
> Northstar Plus SoC is based on ARM Cortex-A9
> revision r3p0 which requires configuration for ARM
> Errata 764369 for SMP. This change adds the needed
> configuration option.
>
> Signed-off-by: Kapil Hali
> ---
> arch/arm/mach-bcm/Kconfig | 2 +
> arch/arm/mach-bcm/Makefile | 8 +-
> arch/arm/mach-bcm/bcm_nsp.h | 19
> arch/arm/mach-bcm/headsmp.S | 37
> arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142
> ++--
> 5 files changed, 197 insertions(+), 11 deletions(-)
> create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
> create mode 100644 arch/arm/mach-bcm/headsmp.S
> rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
>
> diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
> index 1679fa4..2e9dbb5 100644
> --- a/arch/arm/mach-bcm/Kconfig
> +++ b/arch/arm/mach-bcm/Kconfig
> @@ -40,6 +40,8 @@ config ARCH_BCM_NSP
> select ARCH_BCM_IPROC
> select ARM_ERRATA_754322
> select ARM_ERRATA_775420
> + select ARM_ERRATA_764369 if SMP
> + select HAVE_SMP
> help
> Support for Broadcom Northstar Plus SoC.
> Broadcom Northstar Plus family of SoCs are used for switching control
> diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
> index 892261f..36a4ca30 100644
> --- a/arch/arm/mach-bcm/Makefile
> +++ b/arch/arm/mach-bcm/Makefile
> @@ -14,7 +14,11 @@
> obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
>
> # Northstar Plus
> -obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> +obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
> +
> +ifeq ($(CONFIG_ARCH_BCM_NSP),y)
> +obj-$(CONFIG_SMP)+= headsmp.o platsmp.o
> +endif
>
> # BCM281XX
> obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
> @@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX)+= board_bcm281xx.o
> obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
>
> # BCM281XX and BCM21664 SMP support
> -obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
> +obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
>
> # BCM281XX and BCM21664 L2 cache control
> obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
> diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
> new file mode 100644
> index 000..58e1e80
> --- /dev/null
> +++ b/arch/arm/mach-bcm/bcm_nsp.h
> @@ -0,0 +1,19 @@
> +/*
> + * Copyright (C) 2015 Broadcom Corporation
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation version 2.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> + * kind, whether express or implied; without even the implied warranty
> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef __BCM_NSP_H
> +#define __BCM_NSP_H
> +
> +extern void nsp_secondary_startup(void);
> +
> +#endif /* __BCM_NSP_H */
> diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
> new file mode 100644
> index 000..0da13b2
> --- /dev/null
> +++ b/arch/arm/mach-bcm/headsmp.S
> @@ -0,0 +1,37 @@
> +/*
> + * Copyright (C) 2015 Broadcom Corporation
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation version 2.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> + * kind, whether express or implied; without even the implied warranty
> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include
> +
> +/*
> + * iProc specific entry point for secondary CPUs. This provides
> + * a "holding pen" into which all secondary cores are held until
> + * we are ready for them to initialise.
> + */
> +ENTRY(nsp_secondary_startup)
> + mrc p15, 0, r0, c0, c0, 5
> + and r0, r0, #15
> + adr r4, 1f
> + ldmia r4, {r5, r6}
> + sub r4, r4, r5
> + add r6, r6, r4
> +pen: ldr r7, [r6]
> + cmp r7, r0
> + bne pen
> +
> + bsecondary_startup
> +
> +1: .long .
> + .long pen_release
> +
> +ENDPROC(nsp_secondary_startup)
> diff --git a/arch/arm/mach-bcm/kona_smp.c b/arch/arm/mach-bcm/platsmp.c
> similarity index 63%
> rename from arch/arm/mach-bcm/kona_smp.c
> rename to arch/arm/mach-bcm/platsmp.c
> index 66a0465..619030e 100644
> --- a/arch/arm/mach-bcm/kona_smp.c
> +++ b/arch/arm/mach-bcm/platsmp.c
> @@ -1,5 +1,5 @@
> /*
> - * Co
[PATCH 3/3] ARM: BCM: Add SMP support for Broadcom NSP
Add SMP support for Broadcom's Northstar Plus SoC,
cpu enable method and pen_release procedures. This
changes also consolidates iProc family's - BCM NSP
and BCM Kona, SMP handling in a common file.
Northstar Plus SoC is based on ARM Cortex-A9
revision r3p0 which requires configuration for ARM
Errata 764369 for SMP. This change adds the needed
configuration option.
Signed-off-by: Kapil Hali
---
arch/arm/mach-bcm/Kconfig | 2 +
arch/arm/mach-bcm/Makefile | 8 +-
arch/arm/mach-bcm/bcm_nsp.h | 19
arch/arm/mach-bcm/headsmp.S | 37
arch/arm/mach-bcm/{kona_smp.c => platsmp.c} | 142 ++--
5 files changed, 197 insertions(+), 11 deletions(-)
create mode 100644 arch/arm/mach-bcm/bcm_nsp.h
create mode 100644 arch/arm/mach-bcm/headsmp.S
rename arch/arm/mach-bcm/{kona_smp.c => platsmp.c} (63%)
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index 1679fa4..2e9dbb5 100644
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -40,6 +40,8 @@ config ARCH_BCM_NSP
select ARCH_BCM_IPROC
select ARM_ERRATA_754322
select ARM_ERRATA_775420
+ select ARM_ERRATA_764369 if SMP
+ select HAVE_SMP
help
Support for Broadcom Northstar Plus SoC.
Broadcom Northstar Plus family of SoCs are used for switching control
diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
index 892261f..36a4ca30 100644
--- a/arch/arm/mach-bcm/Makefile
+++ b/arch/arm/mach-bcm/Makefile
@@ -14,7 +14,11 @@
obj-$(CONFIG_ARCH_BCM_CYGNUS) += bcm_cygnus.o
# Northstar Plus
-obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
+obj-$(CONFIG_ARCH_BCM_NSP) += bcm_nsp.o
+
+ifeq ($(CONFIG_ARCH_BCM_NSP),y)
+obj-$(CONFIG_SMP) += headsmp.o platsmp.o
+endif
# BCM281XX
obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
@@ -23,7 +27,7 @@ obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
# BCM281XX and BCM21664 SMP support
-obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += kona_smp.o
+obj-$(CONFIG_ARCH_BCM_MOBILE_SMP) += platsmp.o
# BCM281XX and BCM21664 L2 cache control
obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
diff --git a/arch/arm/mach-bcm/bcm_nsp.h b/arch/arm/mach-bcm/bcm_nsp.h
new file mode 100644
index 000..58e1e80
--- /dev/null
+++ b/arch/arm/mach-bcm/bcm_nsp.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2015 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __BCM_NSP_H
+#define __BCM_NSP_H
+
+extern void nsp_secondary_startup(void);
+
+#endif /* __BCM_NSP_H */
diff --git a/arch/arm/mach-bcm/headsmp.S b/arch/arm/mach-bcm/headsmp.S
new file mode 100644
index 000..0da13b2
--- /dev/null
+++ b/arch/arm/mach-bcm/headsmp.S
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2015 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include
+
+/*
+ * iProc specific entry point for secondary CPUs. This provides
+ * a "holding pen" into which all secondary cores are held until
+ * we are ready for them to initialise.
+ */
+ENTRY(nsp_secondary_startup)
+ mrc p15, 0, r0, c0, c0, 5
+ and r0, r0, #15
+ adr r4, 1f
+ ldmia r4, {r5, r6}
+ sub r4, r4, r5
+ add r6, r6, r4
+pen: ldr r7, [r6]
+ cmp r7, r0
+ bne pen
+
+ bsecondary_startup
+
+1: .long .
+ .long pen_release
+
+ENDPROC(nsp_secondary_startup)
diff --git a/arch/arm/mach-bcm/kona_smp.c b/arch/arm/mach-bcm/platsmp.c
similarity index 63%
rename from arch/arm/mach-bcm/kona_smp.c
rename to arch/arm/mach-bcm/platsmp.c
index 66a0465..619030e 100644
--- a/arch/arm/mach-bcm/kona_smp.c
+++ b/arch/arm/mach-bcm/platsmp.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2014 Broadcom Corporation
+ * Copyright (C) 2014-2015 Broadcom Corporation
* Copyright 2014 Linaro Limited
*
* This program is free software; you can redistribute it and/or
@@ -12,16 +12,23 @@
* GNU General Public License for more details.
*/
-#include
+#include
+#include
#include
+#include
#include
+#include
#inclu
