* [PATCH] arch: arm: mach-imx: document field return in CSF template
@ 2022-02-25 10:03 Bastian Krause
2022-02-25 10:25 ` Marc Kleine-Budde
2022-02-28 9:30 ` Sascha Hauer
0 siblings, 2 replies; 5+ messages in thread
From: Bastian Krause @ 2022-02-25 10:03 UTC (permalink / raw)
To: barebox; +Cc: Bastian Krause
Activating the field return configuration returns a locked-down board
(nearly) to its open state. In order to burn the FIELD_RETURN fuse, the
CSF must contain a specific unlock command with the device's UID.
Signed-off-by: Bastian Krause <bst@pengutronix.de>
---
.../include/mach/habv4-imx6-gencsf-template.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
index a60b485292..45da2981cb 100644
--- a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
+++ b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
@@ -39,6 +39,18 @@ hab Engine = SETUP_HABV4_ENGINE
hab Features = SETUP_HABV4_FEATURES
#endif
+/*
+// allow fusing FIELD_RETURN
+// # ocotp0.permanent_write_enable=1
+// # mw -l -d /dev/imx-ocotp 0xb8 0x1
+hab [Unlock]
+hab Engine = OCOTP
+hab Features = FIELD RETURN
+// device-specific UID:
+// $ dd if=/sys/bus/nvmem/devices/imx-ocotp0/nvmem bs=4 skip=1 count=2 status=none | hexdump -ve '1/1 "0x%.2x, "' | sed 's/, $//'
+hab UID = 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08
+*/
+
hab [Install Key]
/* verification key index in key store (0, 2...4) */
hab Verification index = 0
--
2.30.2
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* Re: [PATCH] arch: arm: mach-imx: document field return in CSF template
2022-02-25 10:03 [PATCH] arch: arm: mach-imx: document field return in CSF template Bastian Krause
@ 2022-02-25 10:25 ` Marc Kleine-Budde
2022-02-25 10:46 ` Bastian Krause
2022-02-28 9:30 ` Sascha Hauer
1 sibling, 1 reply; 5+ messages in thread
From: Marc Kleine-Budde @ 2022-02-25 10:25 UTC (permalink / raw)
To: Bastian Krause; +Cc: barebox
[-- Attachment #1.1: Type: text/plain, Size: 1779 bytes --]
On 25.02.2022 11:03:44, Bastian Krause wrote:
> Activating the field return configuration returns a locked-down board
> (nearly) to its open state. In order to burn the FIELD_RETURN fuse, the
> CSF must contain a specific unlock command with the device's UID.
>
> Signed-off-by: Bastian Krause <bst@pengutronix.de>
> ---
> .../include/mach/habv4-imx6-gencsf-template.h | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> index a60b485292..45da2981cb 100644
> --- a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> +++ b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> @@ -39,6 +39,18 @@ hab Engine = SETUP_HABV4_ENGINE
> hab Features = SETUP_HABV4_FEATURES
> #endif
>
> +/*
> +// allow fusing FIELD_RETURN
> +// # ocotp0.permanent_write_enable=1
> +// # mw -l -d /dev/imx-ocotp 0xb8 0x1
> +hab [Unlock]
> +hab Engine = OCOTP
> +hab Features = FIELD RETURN
> +// device-specific UID:
> +// $ dd if=/sys/bus/nvmem/devices/imx-ocotp0/nvmem bs=4 skip=1 count=2 status=none | hexdump -ve '1/1 "0x%.2x, "' | sed 's/, $//'
> +hab UID = 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08
You probably want to comment this all out in the template...
> +*/
> +
> hab [Install Key]
> /* verification key index in key store (0, 2...4) */
> hab Verification index = 0
> --
> 2.30.2
>
>
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] arch: arm: mach-imx: document field return in CSF template
2022-02-25 10:25 ` Marc Kleine-Budde
@ 2022-02-25 10:46 ` Bastian Krause
2022-02-25 10:55 ` Marc Kleine-Budde
0 siblings, 1 reply; 5+ messages in thread
From: Bastian Krause @ 2022-02-25 10:46 UTC (permalink / raw)
To: Marc Kleine-Budde; +Cc: barebox
On 2/25/22 11:25, Marc Kleine-Budde wrote:
> On 25.02.2022 11:03:44, Bastian Krause wrote:
>> Activating the field return configuration returns a locked-down board
>> (nearly) to its open state. In order to burn the FIELD_RETURN fuse, the
>> CSF must contain a specific unlock command with the device's UID.
>>
>> Signed-off-by: Bastian Krause <bst@pengutronix.de>
>> ---
>> .../include/mach/habv4-imx6-gencsf-template.h | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>>
>> diff --git a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
>> index a60b485292..45da2981cb 100644
>> --- a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
>> +++ b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
>> @@ -39,6 +39,18 @@ hab Engine = SETUP_HABV4_ENGINE
>> hab Features = SETUP_HABV4_FEATURES
>> #endif
>>
>> +/*
>> +// allow fusing FIELD_RETURN
>> +// # ocotp0.permanent_write_enable=1
>> +// # mw -l -d /dev/imx-ocotp 0xb8 0x1
>> +hab [Unlock]
>> +hab Engine = OCOTP
>> +hab Features = FIELD RETURN
>> +// device-specific UID:
>> +// $ dd if=/sys/bus/nvmem/devices/imx-ocotp0/nvmem bs=4 skip=1 count=2 status=none | hexdump -ve '1/1 "0x%.2x, "' | sed 's/, $//'
>> +hab UID = 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08
>
> You probably want to comment this all out in the template...
I don't get it, that's all inside the /* commented section */.
Bastian
>
>> +*/
>> +
>> hab [Install Key]
>> /* verification key index in key store (0, 2...4) */
>> hab Verification index = 0
>> --
>> 2.30.2
>>
>>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] arch: arm: mach-imx: document field return in CSF template
2022-02-25 10:46 ` Bastian Krause
@ 2022-02-25 10:55 ` Marc Kleine-Budde
0 siblings, 0 replies; 5+ messages in thread
From: Marc Kleine-Budde @ 2022-02-25 10:55 UTC (permalink / raw)
To: Bastian Krause; +Cc: barebox
[-- Attachment #1.1: Type: text/plain, Size: 1917 bytes --]
On 25.02.2022 11:46:04, Bastian Krause wrote:
> On 2/25/22 11:25, Marc Kleine-Budde wrote:
> > On 25.02.2022 11:03:44, Bastian Krause wrote:
> > > Activating the field return configuration returns a locked-down board
> > > (nearly) to its open state. In order to burn the FIELD_RETURN fuse, the
> > > CSF must contain a specific unlock command with the device's UID.
> > >
> > > Signed-off-by: Bastian Krause <bst@pengutronix.de>
> > > ---
> > > .../include/mach/habv4-imx6-gencsf-template.h | 12 ++++++++++++
> > > 1 file changed, 12 insertions(+)
> > >
> > > diff --git a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> > > index a60b485292..45da2981cb 100644
> > > --- a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> > > +++ b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> > > @@ -39,6 +39,18 @@ hab Engine = SETUP_HABV4_ENGINE
> > > hab Features = SETUP_HABV4_FEATURES
> > > #endif
> > > +/*
> > > +// allow fusing FIELD_RETURN
> > > +// # ocotp0.permanent_write_enable=1
> > > +// # mw -l -d /dev/imx-ocotp 0xb8 0x1
> > > +hab [Unlock]
> > > +hab Engine = OCOTP
> > > +hab Features = FIELD RETURN
> > > +// device-specific UID:
> > > +// $ dd if=/sys/bus/nvmem/devices/imx-ocotp0/nvmem bs=4 skip=1 count=2 status=none | hexdump -ve '1/1 "0x%.2x, "' | sed 's/, $//'
> > > +hab UID = 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08
> >
> > You probably want to comment this all out in the template...
>
> I don't get it, that's all inside the /* commented section */.
Doh!
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] arch: arm: mach-imx: document field return in CSF template
2022-02-25 10:03 [PATCH] arch: arm: mach-imx: document field return in CSF template Bastian Krause
2022-02-25 10:25 ` Marc Kleine-Budde
@ 2022-02-28 9:30 ` Sascha Hauer
1 sibling, 0 replies; 5+ messages in thread
From: Sascha Hauer @ 2022-02-28 9:30 UTC (permalink / raw)
To: Bastian Krause; +Cc: barebox
On Fri, Feb 25, 2022 at 11:03:44AM +0100, Bastian Krause wrote:
> Activating the field return configuration returns a locked-down board
> (nearly) to its open state. In order to burn the FIELD_RETURN fuse, the
> CSF must contain a specific unlock command with the device's UID.
>
> Signed-off-by: Bastian Krause <bst@pengutronix.de>
> ---
> .../include/mach/habv4-imx6-gencsf-template.h | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
Applied, thanks
Sascha
>
> diff --git a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> index a60b485292..45da2981cb 100644
> --- a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> +++ b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf-template.h
> @@ -39,6 +39,18 @@ hab Engine = SETUP_HABV4_ENGINE
> hab Features = SETUP_HABV4_FEATURES
> #endif
>
> +/*
> +// allow fusing FIELD_RETURN
> +// # ocotp0.permanent_write_enable=1
> +// # mw -l -d /dev/imx-ocotp 0xb8 0x1
> +hab [Unlock]
> +hab Engine = OCOTP
> +hab Features = FIELD RETURN
> +// device-specific UID:
> +// $ dd if=/sys/bus/nvmem/devices/imx-ocotp0/nvmem bs=4 skip=1 count=2 status=none | hexdump -ve '1/1 "0x%.2x, "' | sed 's/, $//'
> +hab UID = 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08
> +*/
> +
> hab [Install Key]
> /* verification key index in key store (0, 2...4) */
> hab Verification index = 0
> --
> 2.30.2
>
>
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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2022-02-25 10:03 [PATCH] arch: arm: mach-imx: document field return in CSF template Bastian Krause
2022-02-25 10:25 ` Marc Kleine-Budde
2022-02-25 10:46 ` Bastian Krause
2022-02-25 10:55 ` Marc Kleine-Budde
2022-02-28 9:30 ` Sascha Hauer
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