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[PATCH v3 06/10] ARM: mps2: introduce MPS2 platform

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  [PATCH v3 06/10] ARM: mps2: introduce MPS2 platform Vladimir Murzin <vladimir.murzin@arm.com> - 2016-02-16 11:10 +0100
    Re: [PATCH v3 06/10] ARM: mps2: introduce MPS2 platform Arnd Bergmann <arnd@arndb.de> - 2016-02-16 12:00 +0100
      Re: [PATCH v3 06/10] ARM: mps2: introduce MPS2 platform Vladimir Murzin <vladimir.murzin@arm.com> - 2016-02-16 15:40 +0100
        Re: [PATCH v3 06/10] ARM: mps2: introduce MPS2 platform Arnd Bergmann <arnd@arndb.de> - 2016-02-16 15:50 +0100

#1335236 — [PATCH v3 06/10] ARM: mps2: introduce MPS2 platform

The Cortex-M Prototyping System (or V2M-MPS2) is designed for
prototyping and evaluation Cortex-M family of processors including the
latest Cortex-M7

It comes with a range of useful peripherals including 8MB single cycle
SRAM, 16MB PSRAM, Ethernet, QSVGA touch screen panel, 4bit RGB VGA
connector, Audio, SPI and GPIO.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
---
 arch/arm/Kconfig                 |    8 ++++++++
 arch/arm/Makefile                |    1 +
 arch/arm/mach-mps2/Makefile      |    1 +
 arch/arm/mach-mps2/Makefile.boot |    3 +++
 arch/arm/mach-mps2/dtmachine.c   |   21 +++++++++++++++++++++
 5 files changed, 34 insertions(+)
 create mode 100644 arch/arm/mach-mps2/Makefile
 create mode 100644 arch/arm/mach-mps2/Makefile.boot
 create mode 100644 arch/arm/mach-mps2/dtmachine.c

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4f799e5..48fa6c4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -883,6 +883,14 @@ config ARCH_STM32
 	help
 	  Support for STMicroelectronics STM32 processors.
 
+config ARCH_MPS2
+	bool "ARM MPS2 paltform"
+	depends on ARM_SINGLE_ARMV7M
+	select ARM_AMBA
+	select CLKSRC_MPS2
+	help
+	  Support for ARM MPS2 Cortex-M platform.
+
 # Definitions to make life easier
 config ARCH_ACORN
 	bool
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index fe25410..8cd9ec1 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -182,6 +182,7 @@ machine-$(CONFIG_ARCH_LPC18XX)		+= lpc18xx
 machine-$(CONFIG_ARCH_LPC32XX)		+= lpc32xx
 machine-$(CONFIG_ARCH_MESON)		+= meson
 machine-$(CONFIG_ARCH_MMP)		+= mmp
+machine-$(CONFIG_ARCH_MPS2)		+= mps2
 machine-$(CONFIG_ARCH_MOXART)		+= moxart
 machine-$(CONFIG_ARCH_MV78XX0)		+= mv78xx0
 machine-$(CONFIG_ARCH_MVEBU)		+= mvebu
diff --git a/arch/arm/mach-mps2/Makefile b/arch/arm/mach-mps2/Makefile
new file mode 100644
index 0000000..3a74af7
--- /dev/null
+++ b/arch/arm/mach-mps2/Makefile
@@ -0,0 +1 @@
+obj-y += dtmachine.o
diff --git a/arch/arm/mach-mps2/Makefile.boot b/arch/arm/mach-mps2/Makefile.boot
new file mode 100644
index 0000000..eacfc3f
--- /dev/null
+++ b/arch/arm/mach-mps2/Makefile.boot
@@ -0,0 +1,3 @@
+# Empty file waiting for deletion once Makefile.boot isn't needed any more.
+# Patch waits for application at
+# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
diff --git a/arch/arm/mach-mps2/dtmachine.c b/arch/arm/mach-mps2/dtmachine.c
new file mode 100644
index 0000000..e7ad9c2
--- /dev/null
+++ b/arch/arm/mach-mps2/dtmachine.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2015 ARM Limited
+ *
+ * Author: Vladimir Murzin <vladimir.murzin@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <asm/mach/arch.h>
+
+static const char *const mps2_compat[] __initconst = {
+	"arm,mps2",
+	NULL
+};
+
+DT_MACHINE_START(MPS2DT, "MPS2 (Device Tree Support)")
+	.dt_compat = mps2_compat,
+MACHINE_END
-- 
1.7.9.5

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#1335268

On Tuesday 16 February 2016 10:08:11 Vladimir Murzin wrote:
> The Cortex-M Prototyping System (or V2M-MPS2) is designed for
> prototyping and evaluation Cortex-M family of processors including the
> latest Cortex-M7
> 
> It comes with a range of useful peripherals including 8MB single cycle
> SRAM, 16MB PSRAM, Ethernet, QSVGA touch screen panel, 4bit RGB VGA
> connector, Audio, SPI and GPIO.
> 
> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
> ---
>  arch/arm/Kconfig                 |    8 ++++++++
>  arch/arm/Makefile                |    1 +
>  arch/arm/mach-mps2/Makefile      |    1 +
>  arch/arm/mach-mps2/Makefile.boot |    3 +++
>  arch/arm/mach-mps2/dtmachine.c   |   21 +++++++++++++++++++++
> 

We are in the (slow) process of consolidating the ARM reference platforms
(versatile, integrator, realview, vexpress) into one place.

I'd suggest adding all this to the mach-vexpress directory rather than
a new directory, so we don't have another one to consolidate.

	Arnd

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#1335462

On 16/02/16 10:56, Arnd Bergmann wrote:
> On Tuesday 16 February 2016 10:08:11 Vladimir Murzin wrote:
>> The Cortex-M Prototyping System (or V2M-MPS2) is designed for
>> prototyping and evaluation Cortex-M family of processors including the
>> latest Cortex-M7
>>
>> It comes with a range of useful peripherals including 8MB single cycle
>> SRAM, 16MB PSRAM, Ethernet, QSVGA touch screen panel, 4bit RGB VGA
>> connector, Audio, SPI and GPIO.
>>
>> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
>> ---
>>  arch/arm/Kconfig                 |    8 ++++++++
>>  arch/arm/Makefile                |    1 +
>>  arch/arm/mach-mps2/Makefile      |    1 +
>>  arch/arm/mach-mps2/Makefile.boot |    3 +++
>>  arch/arm/mach-mps2/dtmachine.c   |   21 +++++++++++++++++++++
>>
> 
> We are in the (slow) process of consolidating the ARM reference platforms
> (versatile, integrator, realview, vexpress) into one place.
> 

Thanks for information! Sometime ago I saw on a list you had some
thoughts on consolidating M-class platforms since most of them follow
quite the same pattern (I'm looking at efm32 and stm32). So, shouldn't
this platform consider that way?

> I'd suggest adding all this to the mach-vexpress directory rather than
> a new directory, so we don't have another one to consolidate.
> 

I'm fine with either way.

Thanks
Vladimir

> 	Arnd
> 
> 
> 

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#1335474

On Tuesday 16 February 2016 14:35:43 Vladimir Murzin wrote:
> On 16/02/16 10:56, Arnd Bergmann wrote:
> > On Tuesday 16 February 2016 10:08:11 Vladimir Murzin wrote:
> >> The Cortex-M Prototyping System (or V2M-MPS2) is designed for
> >> prototyping and evaluation Cortex-M family of processors including the
> >> latest Cortex-M7
> >>
> >> It comes with a range of useful peripherals including 8MB single cycle
> >> SRAM, 16MB PSRAM, Ethernet, QSVGA touch screen panel, 4bit RGB VGA
> >> connector, Audio, SPI and GPIO.
> >>
> >> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
> >> ---
> >>  arch/arm/Kconfig                 |    8 ++++++++
> >>  arch/arm/Makefile                |    1 +
> >>  arch/arm/mach-mps2/Makefile      |    1 +
> >>  arch/arm/mach-mps2/Makefile.boot |    3 +++
> >>  arch/arm/mach-mps2/dtmachine.c   |   21 +++++++++++++++++++++
> >>
> > 
> > We are in the (slow) process of consolidating the ARM reference platforms
> > (versatile, integrator, realview, vexpress) into one place.
> > 
> 
> Thanks for information! Sometime ago I saw on a list you had some
> thoughts on consolidating M-class platforms since most of them follow
> quite the same pattern (I'm looking at efm32 and stm32). So, shouldn't
> this platform consider that way?
> 

Right, that would be another option. vf610 is in the same category as this
one I think, it's currently in mach-imx, and we can probably leave it there.

Unless someone is going to do the patch to consolidate the cortex-m
platforms, I'd stay with mach-vexpress here, but I don't have a strong
opinion.

	Arnd

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