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[2/3] ARM: configs: stm32: Enable ARM_MPU

Message ID 1513101746-18030-3-git-send-email-alexandre.torgue@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Alexandre TORGUE Dec. 12, 2017, 6:02 p.m. UTC 
STM32 MCUs embed a Memory Protection Unit. Enabling this setting will
allow the Kernel to configure the MPU according to devicetree.

Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

Comments

Vladimir Murzin Dec. 13, 2017, 10:11 a.m. UTC | #1 
On 12/12/17 18:02, Alexandre Torgue wrote:
> STM32 MCUs embed a Memory Protection Unit. Enabling this setting will
> allow the Kernel to configure the MPU according to devicetree.

Would it be better to "select ARM_MPU" for machines with Cortex-M7?

Vladimir

> 
> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
> 
> diff --git a/arch/arm/configs/stm32_defconfig b/arch/arm/configs/stm32_defconfig
> index bb358ff..e642bdf9 100644
> --- a/arch/arm/configs/stm32_defconfig
> +++ b/arch/arm/configs/stm32_defconfig
> @@ -24,6 +24,7 @@ CONFIG_SET_MEM_PARAM=y
>  CONFIG_DRAM_BASE=0x90000000
>  CONFIG_FLASH_MEM_BASE=0x08000000
>  CONFIG_FLASH_SIZE=0x00200000
> +CONFIG_ARM_MPU=y
>  CONFIG_PREEMPT=y
>  # CONFIG_ATAGS is not set
>  CONFIG_ZBOOT_ROM_TEXT=0x0
>
Alexandre TORGUE Feb. 27, 2018, 5:11 p.m. UTC | #2 
Hi Vlad

On 12/13/2017 11:11 AM, Vladimir Murzin wrote:
> On 12/12/17 18:02, Alexandre Torgue wrote:
>> STM32 MCUs embed a Memory Protection Unit. Enabling this setting will
>> allow the Kernel to configure the MPU according to devicetree.
> 
> Would it be better to "select ARM_MPU" for machines with Cortex-M7?

Sorry for this late answer. You are right I will use a "select" only for 
stm32f7 and stm32h7 machines in mach-stm32/Kconfig.

Regards
Alex

> 
> Vladimir
> 
>>
>> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
>>
>> diff --git a/arch/arm/configs/stm32_defconfig b/arch/arm/configs/stm32_defconfig
>> index bb358ff..e642bdf9 100644
>> --- a/arch/arm/configs/stm32_defconfig
>> +++ b/arch/arm/configs/stm32_defconfig
>> @@ -24,6 +24,7 @@ CONFIG_SET_MEM_PARAM=y
>>   CONFIG_DRAM_BASE=0x90000000
>>   CONFIG_FLASH_MEM_BASE=0x08000000
>>   CONFIG_FLASH_SIZE=0x00200000
>> +CONFIG_ARM_MPU=y
>>   CONFIG_PREEMPT=y
>>   # CONFIG_ATAGS is not set
>>   CONFIG_ZBOOT_ROM_TEXT=0x0
>>
>
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Patch

diff --git a/arch/arm/configs/stm32_defconfig b/arch/arm/configs/stm32_defconfig
index bb358ff..e642bdf9 100644
--- a/arch/arm/configs/stm32_defconfig
+++ b/arch/arm/configs/stm32_defconfig
@@ -24,6 +24,7 @@  CONFIG_SET_MEM_PARAM=y
 CONFIG_DRAM_BASE=0x90000000
 CONFIG_FLASH_MEM_BASE=0x08000000
 CONFIG_FLASH_SIZE=0x00200000
+CONFIG_ARM_MPU=y
 CONFIG_PREEMPT=y
 # CONFIG_ATAGS is not set
 CONFIG_ZBOOT_ROM_TEXT=0x0