[Buildroot] [PATCH 0/3] arc: introduce more CPU versions for selection

[Buildroot] [PATCH 0/3] arc: introduce more CPU versions for selection

[Alexey Brodkin]

To simplify selection of proper configuration of tools for users this series
adds a number of ARC CPUs in Buildroot configuration utility.

So from now on there're following CPUs available for selection:
 * ARC 750D - ARC ISAv1 CPU with MMU
 * ARC 770D - ARC ISAv1 CPU with MMU and additional features like atomic options
 * ARC HS38 - ARC ISAv2 CPU with MMU

Note that ARC HS38 already supported by current arc-2014.08 tools.

Alexey Brodkin (3):
  arc: add explicit selection of CPU templates ARC 750D and ARC770D
  uclibc: add explicit setup of ARC-specific options
  arc: add support of ARC HS38 core

 arch/Config.in.arc       | 25 +++++++++++++++++++++++--
 package/uclibc/Config.in |  7 +++++++
 package/uclibc/uclibc.mk | 12 ++++++++++++
 3 files changed, 42 insertions(+), 2 deletions(-)

-- 
1.9.3

[Buildroot] [PATCH 1/3] arc: add explicit selection of CPU templates ARC 750D and ARC770D

[Alexey Brodkin]

This separation allows to specify unique options and features for each
CPU.

For example ARC 770D has LLOCK/SCOND instructions built-in by default.
Also this new scheme simplifies selection of proper configuration for
users - preconfigured options now match templates for ARC CPUs.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <akolesov@synopsys.com>
---
 arch/Config.in.arc | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index fcb5d7d..b31b141 100644
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -1,6 +1,22 @@
-# Choise of atomic instructions presence
+choice
+	prompt "Target CPU"
+	depends on BR2_arc
+	default BR2_arc770d
+	help
+	    Specific CPU to use
+
+config BR2_arc750d
+	bool "ARC 750D"
+
+config BR2_arc770d
+	bool "ARC 770D"
+
+endchoice
+
+# Choice of atomic instructions presence
 config BR2_ARC_ATOMIC_EXT
 	bool "Atomic extension (LLOCK/SCOND instructions)"
+	default y if BR2_arc770d
 
 config BR2_ARCH_HAS_ATOMICS
 	default y if BR2_ARC_ATOMIC_EXT
@@ -18,4 +34,5 @@ config BR2_ENDIAN
 	default "BIG"	 if BR2_arceb
 
 config BR2_GCC_TARGET_CPU
-	default "arc700"
+	default "arc700" if BR2_arc750d
+	default "arc700" if BR2_arc770d
-- 
1.9.3

[Buildroot] [PATCH 1/3] arc: add explicit selection of CPU templates ARC 750D and ARC770D

[Yann E. MORIN]

Alexey, All,

On 2014-10-30 16:57 +0300, Alexey Brodkin spake thusly:
> This separation allows to specify unique options and features for each
> CPU.
> 
> For example ARC 770D has LLOCK/SCOND instructions built-in by default.

"built-in by default": does that mean some cores might not have atomics?
Does it make sense to disable atomics for 770D at all, or should they
always be enabled?

If it makes sense to disable atomics for 770D, then this code has my:
    Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

However, if it does not make sense to disable atomics for 770D, then we
should do it a little bit differently, like (untested):

    choice
        bool "Target CPU"

    config BR2_arc750d
        bool "ARC 750D"
        select BR2_ARC_MAYBE_ATOMIC_EXT

    config BR2_arc770d
        bool "ARC 770D"
        select BR2_ARC_ATOMIC_EXT

    endchoice

    config BR2_ARC_MAYBE_ATOMIC_EXT
        bool

    config BR2_ARC_ATOMIC_EXT
        bool
        prompt "Atomic extension (LLOCK/SCOND instructions)" if BR2_ARC_MAYBE_ATOMICS

    config BR2_ARCH_HAS_ATOMICS
        default y if BR2_ARC_ATOMIC_EXT

Regards,
Yann E. MORIN.

> Also this new scheme simplifies selection of proper configuration for
> users - preconfigured options now match templates for ARC CPUs.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
> 
> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Cc: Anton Kolesov <akolesov@synopsys.com>
> ---
>  arch/Config.in.arc | 21 +++++++++++++++++++--
>  1 file changed, 19 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/Config.in.arc b/arch/Config.in.arc
> index fcb5d7d..b31b141 100644
> --- a/arch/Config.in.arc
> +++ b/arch/Config.in.arc
> @@ -1,6 +1,22 @@
> -# Choise of atomic instructions presence
> +choice
> +	prompt "Target CPU"
> +	depends on BR2_arc
> +	default BR2_arc770d
> +	help
> +	    Specific CPU to use
> +
> +config BR2_arc750d
> +	bool "ARC 750D"
> +
> +config BR2_arc770d
> +	bool "ARC 770D"
> +
> +endchoice
> +
> +# Choice of atomic instructions presence
>  config BR2_ARC_ATOMIC_EXT
>  	bool "Atomic extension (LLOCK/SCOND instructions)"
> +	default y if BR2_arc770d
>  
>  config BR2_ARCH_HAS_ATOMICS
>  	default y if BR2_ARC_ATOMIC_EXT
> @@ -18,4 +34,5 @@ config BR2_ENDIAN
>  	default "BIG"	 if BR2_arceb
>  
>  config BR2_GCC_TARGET_CPU
> -	default "arc700"
> +	default "arc700" if BR2_arc750d
> +	default "arc700" if BR2_arc770d
> -- 
> 1.9.3
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 1/3] arc: add explicit selection of CPU templates ARC 750D and ARC770D

[Yann E. MORIN]

Alexey, All,

On 2014-11-01 20:55 +0100, Yann E. MORIN spake thusly:
> On 2014-10-30 16:57 +0300, Alexey Brodkin spake thusly:
> > This separation allows to specify unique options and features for each
> > CPU.
> > 
> > For example ARC 770D has LLOCK/SCOND instructions built-in by default.
> 
> "built-in by default": does that mean some cores might not have atomics?
[--SNIP--]

OK, I was dequeuing from the bottom, so I got to read your previous
explanations after I reviewed this version of the series.

Forget what I say, and just considered this to be:

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 1/3] arc: add explicit selection of CPU templates ARC 750D and ARC770D

[Peter Korsgaard]

>>>>> "Alexey" == Alexey Brodkin <Alexey.Brodkin@synopsys.com> writes:

 > This separation allows to specify unique options and features for each
 > CPU.

 > For example ARC 770D has LLOCK/SCOND instructions built-in by default.
 > Also this new scheme simplifies selection of proper configuration for
 > users - preconfigured options now match templates for ARC CPUs.

 > Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Committed, thanks.

-- 
Bye, Peter Korsgaard

[Buildroot] [PATCH 2/3] uclibc: add explicit setup of ARC-specific options

[Alexey Brodkin]

As with other architectures for ARC we need to have an ability to set
specific options in uClibc.

In particular this is required for selection of ARC ISA version.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <akolesov@synopsys.com>
---
 package/uclibc/Config.in |  6 ++++++
 package/uclibc/uclibc.mk | 12 ++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/package/uclibc/Config.in b/package/uclibc/Config.in
index d319ae7..c68558f 100644
--- a/package/uclibc/Config.in
+++ b/package/uclibc/Config.in
@@ -194,6 +194,12 @@ config BR2_UCLIBC_TARGET_ARCH
 	default i386	   if BR2_i386
 	default x86_64	   if BR2_x86_64
 
+config BR2_UCLIBC_ARC_TYPE
+	string
+	depends on BR2_UCLIBC_TARGET_ARCH = "arc"
+	default ARC_CPU_700	if BR2_arc750d
+	default ARC_CPU_700	if BR2_arc770d
+
 config BR2_UCLIBC_ARM_BX
 	bool
 	depends on BR2_UCLIBC_TARGET_ARCH = "arm"
diff --git a/package/uclibc/uclibc.mk b/package/uclibc/uclibc.mk
index b2ecce3..8f990c7 100644
--- a/package/uclibc/uclibc.mk
+++ b/package/uclibc/uclibc.mk
@@ -57,6 +57,17 @@ UCLIBC_LOCALES = $(foreach locale,$(GENERATE_LOCALE),\
 endif
 
 #
+# ARC definitions
+#
+
+ifeq ($(UCLIBC_TARGET_ARCH),arc)
+UCLIBC_ARC_TYPE = CONFIG_$(call qstrip,$(BR2_UCLIBC_ARC_TYPE))
+define UCLIBC_ARC_TYPE_CONFIG
+	$(call KCONFIG_ENABLE_OPT,$(UCLIBC_ARC_TYPE),$(@D)/.config)
+endef
+endif # arc
+
+#
 # ARM definitions
 #
 
@@ -410,6 +421,7 @@ define UCLIBC_KCONFIG_FIXUP_CMDS
 	$(call KCONFIG_SET_OPT,DEVEL_PREFIX,"/usr",$(@D)/.config)
 	$(call KCONFIG_SET_OPT,SHARED_LIB_LOADER_PREFIX,"/lib",$(@D)/.config)
 	$(UCLIBC_MMU_CONFIG)
+	$(UCLIBC_ARC_TYPE_CONFIG)
 	$(UCLIBC_ARM_ABI_CONFIG)
 	$(UCLIBC_ARM_BX_CONFIG)
 	$(UCLIBC_MIPS_ABI_CONFIG)
-- 
1.9.3

[Buildroot] [PATCH 2/3] uclibc: add explicit setup of ARC-specific options

[Yann E. MORIN]

Alexey, All,

On 2014-10-30 16:57 +0300, Alexey Brodkin spake thusly:
> As with other architectures for ARC we need to have an ability to set
> specific options in uClibc.
> 
> In particular this is required for selection of ARC ISA version.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
> 
> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Cc: Anton Kolesov <akolesov@synopsys.com>
> ---
>  package/uclibc/Config.in |  6 ++++++
>  package/uclibc/uclibc.mk | 12 ++++++++++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/package/uclibc/Config.in b/package/uclibc/Config.in
> index d319ae7..c68558f 100644
> --- a/package/uclibc/Config.in
> +++ b/package/uclibc/Config.in
> @@ -194,6 +194,12 @@ config BR2_UCLIBC_TARGET_ARCH
>  	default i386	   if BR2_i386
>  	default x86_64	   if BR2_x86_64
>  
> +config BR2_UCLIBC_ARC_TYPE
> +	string
> +	depends on BR2_UCLIBC_TARGET_ARCH = "arc"
> +	default ARC_CPU_700	if BR2_arc750d
> +	default ARC_CPU_700	if BR2_arc770d

I know you just followed the existing style of the options around, but
since this option is a "string", the default values must be enclosed
between double quotes, like:

    default "ARC_CPU_700" if BR2_arc750d

The fact that it works is that we are lucky there are no symbol named
ARC_CPU_700, otherwise its value would be used, not the string
"ARC_CPU_700".

I would prefer we get proper kconfig code, even though the rest of the
code around is not correct. Maybe a preliminary patch to fix that? ;-)

Otherwise, looks good to me.

Regards,
Yann E. MORIN.

>  config BR2_UCLIBC_ARM_BX
>  	bool
>  	depends on BR2_UCLIBC_TARGET_ARCH = "arm"
> diff --git a/package/uclibc/uclibc.mk b/package/uclibc/uclibc.mk
> index b2ecce3..8f990c7 100644
> --- a/package/uclibc/uclibc.mk
> +++ b/package/uclibc/uclibc.mk
> @@ -57,6 +57,17 @@ UCLIBC_LOCALES = $(foreach locale,$(GENERATE_LOCALE),\
>  endif
>  
>  #
> +# ARC definitions
> +#
> +
> +ifeq ($(UCLIBC_TARGET_ARCH),arc)
> +UCLIBC_ARC_TYPE = CONFIG_$(call qstrip,$(BR2_UCLIBC_ARC_TYPE))
> +define UCLIBC_ARC_TYPE_CONFIG
> +	$(call KCONFIG_ENABLE_OPT,$(UCLIBC_ARC_TYPE),$(@D)/.config)
> +endef
> +endif # arc
> +
> +#
>  # ARM definitions
>  #
>  
> @@ -410,6 +421,7 @@ define UCLIBC_KCONFIG_FIXUP_CMDS
>  	$(call KCONFIG_SET_OPT,DEVEL_PREFIX,"/usr",$(@D)/.config)
>  	$(call KCONFIG_SET_OPT,SHARED_LIB_LOADER_PREFIX,"/lib",$(@D)/.config)
>  	$(UCLIBC_MMU_CONFIG)
> +	$(UCLIBC_ARC_TYPE_CONFIG)
>  	$(UCLIBC_ARM_ABI_CONFIG)
>  	$(UCLIBC_ARM_BX_CONFIG)
>  	$(UCLIBC_MIPS_ABI_CONFIG)
> -- 
> 1.9.3
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 2/3] uclibc: add explicit setup of ARC-specific options

[Peter Korsgaard]

>>>>> "Alexey" == Alexey Brodkin <Alexey.Brodkin@synopsys.com> writes:

 > As with other architectures for ARC we need to have an ability to set
 > specific options in uClibc.

 > In particular this is required for selection of ARC ISA version.

 > Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Committed with quotes added as noted by Yann, thanks.

-- 
Bye, Peter Korsgaard

[Buildroot] [PATCH 3/3] arc: add support of ARC HS38 core

[Alexey Brodkin]

Synopsys has recently announced its new ARC HS38 core that is capable of
running Linux -
http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor

ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and
libc.

Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are
built-in by default, so enabling atomic extensions in Buildroot as well.

This commit adds support of the core in buildroot.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <anton.kolesov@synopsys.com>
---
 arch/Config.in.arc       | 6 +++++-
 package/uclibc/Config.in | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index b31b141..b48a90f 100644
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -11,12 +11,15 @@ config BR2_arc750d
 config BR2_arc770d
 	bool "ARC 770D"
 
+config BR2_archs38
+	bool "ARC HS38"
+
 endchoice
 
 # Choice of atomic instructions presence
 config BR2_ARC_ATOMIC_EXT
 	bool "Atomic extension (LLOCK/SCOND instructions)"
-	default y if BR2_arc770d
+	default y if BR2_arc770d || BR2_archs38
 
 config BR2_ARCH_HAS_ATOMICS
 	default y if BR2_ARC_ATOMIC_EXT
@@ -36,3 +39,4 @@ config BR2_ENDIAN
 config BR2_GCC_TARGET_CPU
 	default "arc700" if BR2_arc750d
 	default "arc700" if BR2_arc770d
+	default "archs"	 if BR2_archs38
diff --git a/package/uclibc/Config.in b/package/uclibc/Config.in
index c68558f..40a268b 100644
--- a/package/uclibc/Config.in
+++ b/package/uclibc/Config.in
@@ -199,6 +199,7 @@ config BR2_UCLIBC_ARC_TYPE
 	depends on BR2_UCLIBC_TARGET_ARCH = "arc"
 	default ARC_CPU_700	if BR2_arc750d
 	default ARC_CPU_700	if BR2_arc770d
+	default ARC_CPU_HS	if BR2_archs38
 
 config BR2_UCLIBC_ARM_BX
 	bool
-- 
1.9.3

[Buildroot] [PATCH 3/3] arc: add support of ARC HS38 core

[Yann E. MORIN]

Alexey, All,

On 2014-10-30 16:57 +0300, Alexey Brodkin spake thusly:
> Synopsys has recently announced its new ARC HS38 core that is capable of
> running Linux -
> http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor
> 
> ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and
> libc.
> 
> Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are
> built-in by default, so enabling atomic extensions in Buildroot as well.

Ditto as for the first patch: are atomics configurable? Ditto the
proposal if not.

> This commit adds support of the core in buildroot.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
> 
> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Cc: Anton Kolesov <anton.kolesov@synopsys.com>
> ---
>  arch/Config.in.arc       | 6 +++++-
>  package/uclibc/Config.in | 1 +
>  2 files changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/Config.in.arc b/arch/Config.in.arc
> index b31b141..b48a90f 100644
> --- a/arch/Config.in.arc
> +++ b/arch/Config.in.arc
> @@ -11,12 +11,15 @@ config BR2_arc750d
>  config BR2_arc770d
>  	bool "ARC 770D"
>  
> +config BR2_archs38
> +	bool "ARC HS38"
> +
>  endchoice
>  
>  # Choice of atomic instructions presence
>  config BR2_ARC_ATOMIC_EXT
>  	bool "Atomic extension (LLOCK/SCOND instructions)"
> -	default y if BR2_arc770d
> +	default y if BR2_arc770d || BR2_archs38
>  
>  config BR2_ARCH_HAS_ATOMICS
>  	default y if BR2_ARC_ATOMIC_EXT
> @@ -36,3 +39,4 @@ config BR2_ENDIAN
>  config BR2_GCC_TARGET_CPU
>  	default "arc700" if BR2_arc750d
>  	default "arc700" if BR2_arc770d
> +	default "archs"	 if BR2_archs38
> diff --git a/package/uclibc/Config.in b/package/uclibc/Config.in
> index c68558f..40a268b 100644
> --- a/package/uclibc/Config.in
> +++ b/package/uclibc/Config.in
> @@ -199,6 +199,7 @@ config BR2_UCLIBC_ARC_TYPE
>  	depends on BR2_UCLIBC_TARGET_ARCH = "arc"
>  	default ARC_CPU_700	if BR2_arc750d
>  	default ARC_CPU_700	if BR2_arc770d
> +	default ARC_CPU_HS	if BR2_archs38

Ditto: this is a string, so values must be enclosed between double
quotes.

Regards,
Yann E. MORIN.

>  
>  config BR2_UCLIBC_ARM_BX
>  	bool
> -- 
> 1.9.3
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 3/3] arc: add support of ARC HS38 core

[Yann E. MORIN]

Alexey, All,

On 2014-11-01 22:47 +0100, Yann E. MORIN spake thusly:
> On 2014-10-30 16:57 +0300, Alexey Brodkin spake thusly:
> > Synopsys has recently announced its new ARC HS38 core that is capable of
> > running Linux -
> > http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor
> > 
> > ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and
> > libc.
> > 
> > Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are
> > built-in by default, so enabling atomic extensions in Buildroot as well.
> 
> Ditto as for the first patch: are atomics configurable? Ditto the
> proposal if not.

Ditto: I just read your previous explanations, so just forget about that
part. Still the comment below stands...

[--SNIP--]
> > diff --git a/package/uclibc/Config.in b/package/uclibc/Config.in
> > index c68558f..40a268b 100644
> > --- a/package/uclibc/Config.in
> > +++ b/package/uclibc/Config.in
> > @@ -199,6 +199,7 @@ config BR2_UCLIBC_ARC_TYPE
> >  	depends on BR2_UCLIBC_TARGET_ARCH = "arc"
> >  	default ARC_CPU_700	if BR2_arc750d
> >  	default ARC_CPU_700	if BR2_arc770d
> > +	default ARC_CPU_HS	if BR2_archs38
> 
> Ditto: this is a string, so values must be enclosed between double
> quotes.

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 3/3] arc: add support of ARC HS38 core

[Peter Korsgaard]

>>>>> "Alexey" == Alexey Brodkin <Alexey.Brodkin@synopsys.com> writes:

 > Synopsys has recently announced its new ARC HS38 core that is capable of
 > running Linux -
 > http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor

 > ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and
 > libc.

 > Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are
 > built-in by default, so enabling atomic extensions in Buildroot as well.

 > This commit adds support of the core in buildroot.

Committed with quotes added as noted by Yann, thanks.

-- 
Bye, Peter Korsgaard