* [PATCH] ARM: debug: stm32: add UART early console configuration
@ 2019-04-10 8:00 Erwan Le Ray
2019-04-10 10:19 ` Clément Péron
0 siblings, 1 reply; 4+ messages in thread
From: Erwan Le Ray @ 2019-04-10 8:00 UTC (permalink / raw)
To: Olof Johansson, Arnd Bergmann, Kevin Hilman
Cc: linux-arm-kernel, linux-kernel, linux-stm32, Russell King,
Maxime Coquelin, Alexandre Torgue, Clement Peron, Simon Horman,
Stefan Agner, Biju Das, Gerald Baeza, Uwe Kleine-Koenig,
Erwan Le Ray, Clement Peron, Bich Hemon, Fabrice Gasnier
- This patch allows to configure UART instance for early console by setting
physical and virtual base addresses.
- This patch adds UART early console support for stm32h7 and stm32mp157c.
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 6d6e033..4ea3e17 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1201,23 +1201,49 @@ choice
config STM32F4_DEBUG_UART
bool "Use STM32F4 UART for low-level debug"
- depends on ARCH_STM32
+ depends on MACH_STM32F429 || MACH_STM32F469
select DEBUG_STM32_UART
help
Say Y here if you want kernel low-level debugging support
on STM32F4 based platforms, which default UART is wired on
- USART1.
+ USART1, but another UART instance can be selected by modifying
+ CONFIG_DEBUG_UART_PHYS.
If unsure, say N.
config STM32F7_DEBUG_UART
bool "Use STM32F7 UART for low-level debug"
- depends on ARCH_STM32
+ depends on MACH_STM32F746 || MACH_STM32F769
select DEBUG_STM32_UART
help
Say Y here if you want kernel low-level debugging support
on STM32F7 based platforms, which default UART is wired on
- USART1.
+ USART1, but another UART instance can be selected by modifying
+ CONFIG_DEBUG_UART_PHYS.
+
+ If unsure, say N.
+
+ config STM32H7_DEBUG_UART
+ bool "Use STM32H7 UART for low-level debug"
+ depends on MACH_STM32H743
+ select DEBUG_STM32_UART
+ help
+ Say Y here if you want kernel low-level debugging support
+ on STM32H7 based platforms, which default UART is wired on
+ USART1, but another UART instance can be selected by modifying
+ CONFIG_DEBUG_UART_PHYS.
+
+ If unsure, say N.
+
+ config STM32MP1_DEBUG_UART
+ bool "Use STM32MP1 UART for low-level debug"
+ depends on MACH_STM32MP157
+ select DEBUG_STM32_UART
+ help
+ Say Y here if you want kernel low-level debugging support
+ on STM32MP1 based platforms, wich default UART is wired on
+ UART4, but another UART instance can be selected by modifying
+ CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT.
If unsure, say N.
@@ -1622,6 +1648,9 @@ config DEBUG_UART_PHYS
default 0x3e000000 if DEBUG_BCM_KONA_UART
default 0x3f201000 if DEBUG_BCM2836
default 0x4000e400 if DEBUG_LL_UART_EFM32
+ default 0x40010000 if STM32MP1_DEBUG_UART
+ default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
+ STM32H7_DEBUG_UART
default 0x40028000 if DEBUG_AT91_SAMV7_USART1
default 0x40081000 if DEBUG_LPC18XX_UART0
default 0x40090000 if DEBUG_LPC32XX
@@ -1716,7 +1745,7 @@ config DEBUG_UART_PHYS
DEBUG_S3C64XX_UART || \
DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
- DEBUG_AT91_UART
+ DEBUG_AT91_UART || DEBUG_STM32_UART
config DEBUG_UART_VIRT
hex "Virtual base address of debug UART"
@@ -1784,6 +1813,7 @@ config DEBUG_UART_VIRT
default 0xfd012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_MV78XX0
default 0xfd883000 if DEBUG_ALPINE_UART0
default 0xfde12000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_DOVE
+ default 0xfe010000 if STM32MP1_DEBUG_UART
default 0xfe012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_ORION5X
default 0xfe017000 if DEBUG_MMP_UART2
default 0xfe018000 if DEBUG_MMP_UART3
@@ -1832,7 +1862,7 @@ config DEBUG_UART_VIRT
DEBUG_S3C64XX_UART || \
DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
- DEBUG_AT91_UART
+ DEBUG_AT91_UART || DEBUG_STM32_UART
config DEBUG_UART_8250_SHIFT
int "Register offset shift for the 8250 debug UART"
diff --git a/arch/arm/include/debug/stm32.S b/arch/arm/include/debug/stm32.S
index 1abb32f..6446e46 100644
--- a/arch/arm/include/debug/stm32.S
+++ b/arch/arm/include/debug/stm32.S
@@ -4,14 +4,13 @@
* Author: Gerald Baeza <gerald.baeza@st.com> for STMicroelectronics.
*/
-#define STM32_UART_BASE 0x40011000 /* USART1 */
-
#ifdef CONFIG_STM32F4_DEBUG_UART
#define STM32_USART_SR_OFF 0x00
#define STM32_USART_TDR_OFF 0x04
#endif
-#ifdef CONFIG_STM32F7_DEBUG_UART
+#if defined(CONFIG_STM32F7_DEBUG_UART) || (CONFIG_STM32H7_DEBUG_UART) || \
+ defined(CONFIG_STM32MP1_DEBUG_UART)
#define STM32_USART_SR_OFF 0x1C
#define STM32_USART_TDR_OFF 0x28
#endif
@@ -20,8 +19,8 @@
#define STM32_USART_TXE (1 << 7) /* Tx data reg empty */
.macro addruart, rp, rv, tmp
- ldr \rp, =STM32_UART_BASE @ physical base
- ldr \rv, =STM32_UART_BASE @ virt base /* NoMMU */
+ ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base
+ ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base
.endm
.macro senduart,rd,rx
--
1.9.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ARM: debug: stm32: add UART early console configuration
2019-04-10 8:00 [PATCH] ARM: debug: stm32: add UART early console configuration Erwan Le Ray
@ 2019-04-10 10:19 ` Clément Péron
2019-05-09 7:41 ` Erwan LE RAY
0 siblings, 1 reply; 4+ messages in thread
From: Clément Péron @ 2019-04-10 10:19 UTC (permalink / raw)
To: Erwan Le Ray
Cc: Olof Johansson, Arnd Bergmann, Kevin Hilman, linux-arm-kernel,
linux-kernel, linux-stm32, Russell King, Maxime Coquelin,
Alexandre Torgue, Clement Peron, Simon Horman, Stefan Agner,
Biju Das, Gerald Baeza, Uwe Kleine-Koenig, Clement Peron,
Bich Hemon, Fabrice Gasnier
Hi,
On Wed, 10 Apr 2019 at 10:03, Erwan Le Ray <erwan.leray@st.com> wrote:
>
> - This patch allows to configure UART instance for early console by setting
> physical and virtual base addresses.
> - This patch adds UART early console support for stm32h7 and stm32mp157c.
*Newbie kernel speaking*
I think this patch introduce at least 2, I will go for 3 modifications:
-Adding H7 Debug
-Adding MP1 debug
-(Fixing dependencies F4/F7)
With my little knowledge, I will separate this patch in 3.
Also try to have a commit log like this :
1) Explain What's wrong or is not present
2) Explain what you do in the patch
here you don't explain a lot what the issues are.
My 2cts on your patch, again newbie user here and I have post only few
patches but this is my sharing.
Thanks,
Clement
>
> Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
>
> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index 6d6e033..4ea3e17 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -1201,23 +1201,49 @@ choice
>
> config STM32F4_DEBUG_UART
> bool "Use STM32F4 UART for low-level debug"
> - depends on ARCH_STM32
> + depends on MACH_STM32F429 || MACH_STM32F469
> select DEBUG_STM32_UART
> help
> Say Y here if you want kernel low-level debugging support
> on STM32F4 based platforms, which default UART is wired on
> - USART1.
> + USART1, but another UART instance can be selected by modifying
> + CONFIG_DEBUG_UART_PHYS.
>
> If unsure, say N.
>
> config STM32F7_DEBUG_UART
> bool "Use STM32F7 UART for low-level debug"
> - depends on ARCH_STM32
> + depends on MACH_STM32F746 || MACH_STM32F769
> select DEBUG_STM32_UART
> help
> Say Y here if you want kernel low-level debugging support
> on STM32F7 based platforms, which default UART is wired on
> - USART1.
> + USART1, but another UART instance can be selected by modifying
> + CONFIG_DEBUG_UART_PHYS.
> +
> + If unsure, say N.
> +
> + config STM32H7_DEBUG_UART
> + bool "Use STM32H7 UART for low-level debug"
> + depends on MACH_STM32H743
> + select DEBUG_STM32_UART
> + help
> + Say Y here if you want kernel low-level debugging support
> + on STM32H7 based platforms, which default UART is wired on
> + USART1, but another UART instance can be selected by modifying
> + CONFIG_DEBUG_UART_PHYS.
> +
> + If unsure, say N.
> +
> + config STM32MP1_DEBUG_UART
> + bool "Use STM32MP1 UART for low-level debug"
> + depends on MACH_STM32MP157
> + select DEBUG_STM32_UART
> + help
> + Say Y here if you want kernel low-level debugging support
> + on STM32MP1 based platforms, wich default UART is wired on
> + UART4, but another UART instance can be selected by modifying
> + CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT.
>
> If unsure, say N.
>
> @@ -1622,6 +1648,9 @@ config DEBUG_UART_PHYS
> default 0x3e000000 if DEBUG_BCM_KONA_UART
> default 0x3f201000 if DEBUG_BCM2836
> default 0x4000e400 if DEBUG_LL_UART_EFM32
> + default 0x40010000 if STM32MP1_DEBUG_UART
> + default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
> + STM32H7_DEBUG_UART
> default 0x40028000 if DEBUG_AT91_SAMV7_USART1
> default 0x40081000 if DEBUG_LPC18XX_UART0
> default 0x40090000 if DEBUG_LPC32XX
> @@ -1716,7 +1745,7 @@ config DEBUG_UART_PHYS
> DEBUG_S3C64XX_UART || \
> DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
> DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
> - DEBUG_AT91_UART
> + DEBUG_AT91_UART || DEBUG_STM32_UART
>
> config DEBUG_UART_VIRT
> hex "Virtual base address of debug UART"
> @@ -1784,6 +1813,7 @@ config DEBUG_UART_VIRT
> default 0xfd012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_MV78XX0
> default 0xfd883000 if DEBUG_ALPINE_UART0
> default 0xfde12000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_DOVE
> + default 0xfe010000 if STM32MP1_DEBUG_UART
> default 0xfe012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_ORION5X
> default 0xfe017000 if DEBUG_MMP_UART2
> default 0xfe018000 if DEBUG_MMP_UART3
> @@ -1832,7 +1862,7 @@ config DEBUG_UART_VIRT
> DEBUG_S3C64XX_UART || \
> DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
> DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
> - DEBUG_AT91_UART
> + DEBUG_AT91_UART || DEBUG_STM32_UART
>
> config DEBUG_UART_8250_SHIFT
> int "Register offset shift for the 8250 debug UART"
> diff --git a/arch/arm/include/debug/stm32.S b/arch/arm/include/debug/stm32.S
> index 1abb32f..6446e46 100644
> --- a/arch/arm/include/debug/stm32.S
> +++ b/arch/arm/include/debug/stm32.S
> @@ -4,14 +4,13 @@
> * Author: Gerald Baeza <gerald.baeza@st.com> for STMicroelectronics.
> */
>
> -#define STM32_UART_BASE 0x40011000 /* USART1 */
> -
> #ifdef CONFIG_STM32F4_DEBUG_UART
> #define STM32_USART_SR_OFF 0x00
> #define STM32_USART_TDR_OFF 0x04
> #endif
>
> -#ifdef CONFIG_STM32F7_DEBUG_UART
> +#if defined(CONFIG_STM32F7_DEBUG_UART) || (CONFIG_STM32H7_DEBUG_UART) || \
> + defined(CONFIG_STM32MP1_DEBUG_UART)
> #define STM32_USART_SR_OFF 0x1C
> #define STM32_USART_TDR_OFF 0x28
> #endif
> @@ -20,8 +19,8 @@
> #define STM32_USART_TXE (1 << 7) /* Tx data reg empty */
>
> .macro addruart, rp, rv, tmp
> - ldr \rp, =STM32_UART_BASE @ physical base
> - ldr \rv, =STM32_UART_BASE @ virt base /* NoMMU */
> + ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base
> + ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base
> .endm
>
> .macro senduart,rd,rx
> --
> 1.9.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ARM: debug: stm32: add UART early console configuration
2019-04-10 10:19 ` Clément Péron
@ 2019-05-09 7:41 ` Erwan LE RAY
2019-06-10 15:47 ` Erwan LE RAY
0 siblings, 1 reply; 4+ messages in thread
From: Erwan LE RAY @ 2019-05-09 7:41 UTC (permalink / raw)
To: Olof Johansson, Arnd Bergmann, Kevin Hilman
Cc: Clément Péron, linux-arm-kernel, linux-kernel,
linux-stm32, Russell King, Maxime Coquelin, Alexandre TORGUE,
Clement Peron, Simon Horman, Stefan Agner, Biju Das,
Gerald BAEZA, Uwe Kleine-Koenig, Bich HEMON, Fabrice GASNIER
Hi Olof, Arnd and Kevin,
Can you please provide me your feedback about the patch, and about
Clement changes proposal.
I would like to know if you expect a V2 (based on Clement comments), or
if the V1 if OK for your.
Best regards, Erwan.
On 4/10/19 12:19 PM, Clément Péron wrote:
> Hi,
>
> On Wed, 10 Apr 2019 at 10:03, Erwan Le Ray <erwan.leray@st.com> wrote:
>> - This patch allows to configure UART instance for early console by setting
>> physical and virtual base addresses.
>> - This patch adds UART early console support for stm32h7 and stm32mp157c.
> *Newbie kernel speaking*
>
> I think this patch introduce at least 2, I will go for 3 modifications:
> -Adding H7 Debug
> -Adding MP1 debug
> -(Fixing dependencies F4/F7)
>
> With my little knowledge, I will separate this patch in 3.
> Also try to have a commit log like this :
> 1) Explain What's wrong or is not present
> 2) Explain what you do in the patch
>
> here you don't explain a lot what the issues are.
>
> My 2cts on your patch, again newbie user here and I have post only few
> patches but this is my sharing.
>
> Thanks,
> Clement
>
>> Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
>>
>> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
>> index 6d6e033..4ea3e17 100644
>> --- a/arch/arm/Kconfig.debug
>> +++ b/arch/arm/Kconfig.debug
>> @@ -1201,23 +1201,49 @@ choice
>>
>> config STM32F4_DEBUG_UART
>> bool "Use STM32F4 UART for low-level debug"
>> - depends on ARCH_STM32
>> + depends on MACH_STM32F429 || MACH_STM32F469
>> select DEBUG_STM32_UART
>> help
>> Say Y here if you want kernel low-level debugging support
>> on STM32F4 based platforms, which default UART is wired on
>> - USART1.
>> + USART1, but another UART instance can be selected by modifying
>> + CONFIG_DEBUG_UART_PHYS.
>>
>> If unsure, say N.
>>
>> config STM32F7_DEBUG_UART
>> bool "Use STM32F7 UART for low-level debug"
>> - depends on ARCH_STM32
>> + depends on MACH_STM32F746 || MACH_STM32F769
>> select DEBUG_STM32_UART
>> help
>> Say Y here if you want kernel low-level debugging support
>> on STM32F7 based platforms, which default UART is wired on
>> - USART1.
>> + USART1, but another UART instance can be selected by modifying
>> + CONFIG_DEBUG_UART_PHYS.
>> +
>> + If unsure, say N.
>> +
>> + config STM32H7_DEBUG_UART
>> + bool "Use STM32H7 UART for low-level debug"
>> + depends on MACH_STM32H743
>> + select DEBUG_STM32_UART
>> + help
>> + Say Y here if you want kernel low-level debugging support
>> + on STM32H7 based platforms, which default UART is wired on
>> + USART1, but another UART instance can be selected by modifying
>> + CONFIG_DEBUG_UART_PHYS.
>> +
>> + If unsure, say N.
>> +
>> + config STM32MP1_DEBUG_UART
>> + bool "Use STM32MP1 UART for low-level debug"
>> + depends on MACH_STM32MP157
>> + select DEBUG_STM32_UART
>> + help
>> + Say Y here if you want kernel low-level debugging support
>> + on STM32MP1 based platforms, wich default UART is wired on
>> + UART4, but another UART instance can be selected by modifying
>> + CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT.
>>
>> If unsure, say N.
>>
>> @@ -1622,6 +1648,9 @@ config DEBUG_UART_PHYS
>> default 0x3e000000 if DEBUG_BCM_KONA_UART
>> default 0x3f201000 if DEBUG_BCM2836
>> default 0x4000e400 if DEBUG_LL_UART_EFM32
>> + default 0x40010000 if STM32MP1_DEBUG_UART
>> + default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
>> + STM32H7_DEBUG_UART
>> default 0x40028000 if DEBUG_AT91_SAMV7_USART1
>> default 0x40081000 if DEBUG_LPC18XX_UART0
>> default 0x40090000 if DEBUG_LPC32XX
>> @@ -1716,7 +1745,7 @@ config DEBUG_UART_PHYS
>> DEBUG_S3C64XX_UART || \
>> DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
>> DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
>> - DEBUG_AT91_UART
>> + DEBUG_AT91_UART || DEBUG_STM32_UART
>>
>> config DEBUG_UART_VIRT
>> hex "Virtual base address of debug UART"
>> @@ -1784,6 +1813,7 @@ config DEBUG_UART_VIRT
>> default 0xfd012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_MV78XX0
>> default 0xfd883000 if DEBUG_ALPINE_UART0
>> default 0xfde12000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_DOVE
>> + default 0xfe010000 if STM32MP1_DEBUG_UART
>> default 0xfe012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_ORION5X
>> default 0xfe017000 if DEBUG_MMP_UART2
>> default 0xfe018000 if DEBUG_MMP_UART3
>> @@ -1832,7 +1862,7 @@ config DEBUG_UART_VIRT
>> DEBUG_S3C64XX_UART || \
>> DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
>> DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
>> - DEBUG_AT91_UART
>> + DEBUG_AT91_UART || DEBUG_STM32_UART
>>
>> config DEBUG_UART_8250_SHIFT
>> int "Register offset shift for the 8250 debug UART"
>> diff --git a/arch/arm/include/debug/stm32.S b/arch/arm/include/debug/stm32.S
>> index 1abb32f..6446e46 100644
>> --- a/arch/arm/include/debug/stm32.S
>> +++ b/arch/arm/include/debug/stm32.S
>> @@ -4,14 +4,13 @@
>> * Author: Gerald Baeza <gerald.baeza@st.com> for STMicroelectronics.
>> */
>>
>> -#define STM32_UART_BASE 0x40011000 /* USART1 */
>> -
>> #ifdef CONFIG_STM32F4_DEBUG_UART
>> #define STM32_USART_SR_OFF 0x00
>> #define STM32_USART_TDR_OFF 0x04
>> #endif
>>
>> -#ifdef CONFIG_STM32F7_DEBUG_UART
>> +#if defined(CONFIG_STM32F7_DEBUG_UART) || (CONFIG_STM32H7_DEBUG_UART) || \
>> + defined(CONFIG_STM32MP1_DEBUG_UART)
>> #define STM32_USART_SR_OFF 0x1C
>> #define STM32_USART_TDR_OFF 0x28
>> #endif
>> @@ -20,8 +19,8 @@
>> #define STM32_USART_TXE (1 << 7) /* Tx data reg empty */
>>
>> .macro addruart, rp, rv, tmp
>> - ldr \rp, =STM32_UART_BASE @ physical base
>> - ldr \rv, =STM32_UART_BASE @ virt base /* NoMMU */
>> + ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base
>> + ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base
>> .endm
>>
>> .macro senduart,rd,rx
>> --
>> 1.9.1
>>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ARM: debug: stm32: add UART early console configuration
2019-05-09 7:41 ` Erwan LE RAY
@ 2019-06-10 15:47 ` Erwan LE RAY
0 siblings, 0 replies; 4+ messages in thread
From: Erwan LE RAY @ 2019-06-10 15:47 UTC (permalink / raw)
To: Olof Johansson, Arnd Bergmann, Kevin Hilman
Cc: Clément Péron, linux-arm-kernel, linux-kernel,
linux-stm32, Russell King, Maxime Coquelin, Alexandre TORGUE,
Clement Peron, Simon Horman, Stefan Agner, Biju Das,
Gerald BAEZA, Uwe Kleine-Koenig, Bich HEMON, Fabrice GASNIER
Hi Olof, Arnd and Kevin,
Gentle reminder on my feedback request.
Best regards, Erwan.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-06-10 15:48 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2019-04-10 8:00 [PATCH] ARM: debug: stm32: add UART early console configuration Erwan Le Ray
2019-04-10 10:19 ` Clément Péron
2019-05-09 7:41 ` Erwan LE RAY
2019-06-10 15:47 ` Erwan LE RAY
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