Re: [PATCH] Documentation: boards: stm32mp: document eMMC boot configuration
On Fri, Aug 28, 2020 at 07:31:15PM +0200, Bastian Krause wrote: > From: Ahmad Fatoum > > In order to boot from eMMC on the STM32MP15x, the boot_ack bit in the > ext_csd register must be set. Document this and while at it, fix a > misformatted code block in the same section. > > Signed-off-by: Ahmad Fatoum > Signed-off-by: Bastian Krause > --- > Documentation/boards/stm32mp.rst | 13 - > 1 file changed, 12 insertions(+), 1 deletion(-) Applied, thanks Sascha -- 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- | ___ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
[PATCH] Documentation: boards: stm32mp: document eMMC boot configuration
From: Ahmad Fatoum
In order to boot from eMMC on the STM32MP15x, the boot_ack bit in the
ext_csd register must be set. Document this and while at it, fix a
misformatted code block in the same section.
Signed-off-by: Ahmad Fatoum
Signed-off-by: Bastian Krause
---
Documentation/boards/stm32mp.rst | 13 -
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/Documentation/boards/stm32mp.rst b/Documentation/boards/stm32mp.rst
index 7c657eb990..b235c39927 100644
--- a/Documentation/boards/stm32mp.rst
+++ b/Documentation/boards/stm32mp.rst
@@ -64,7 +64,7 @@ An appropriate image for a SD-Card can be generated with
following
}
For eMMC, the boot partitions are used as the FSBL partitions and so the user
-partitions may look like this:
+partitions may look like this::
image @STM32MP_BOARD@.img {
partition ssbl {
@@ -80,6 +80,17 @@ partitions may look like this:
The fsbl1 and fsbl2 can be flashed by writing to barebox ``/dev/mmcX.boot0``
and
``/dev/mmcX.boot1`` respectively or from a booted operating system.
+Additionally, the eMMC's ``ext_csd`` register must be modified to activate the
+boot acknowledge signal (``BOOT_ACK``) and to select a boot partition.
+
+Assuming ``CONFIG_CMD_MMC_EXTCSD`` is enabled and the board shall boot from
+``/dev/mmc1.boot1``::
+
+ mmc_extcsd /dev/mmc1 -i 179 -v 0x50
+
+The STM32MP1 BootROM does *not* support booting from eMMC without fast boot
+acknowledge.
+
Boot source selection
-
--
2.28.0
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Re: [PATCH] Documentation: boards: stm32mp: document eMMC boot configuration
On Mon, May 18, 2020 at 08:36:56AM +0200, Sascha Hauer wrote: > On Wed, May 13, 2020 at 02:53:48PM +0200, Ahmad Fatoum wrote: > > In order to boot from eMMC on the STM32MP15x, the boot_ack bit in the > > ext_csd register must be set. Document this and while at it, fix a > > misformatted code block in the same section. > > > > Signed-off-by: Ahmad Fatoum > > --- > > Documentation/boards/stm32mp.rst | 10 +- > > 1 file changed, 9 insertions(+), 1 deletion(-) > > Applied, thanks And dropped again until it's clear if we really want to handle this with a device parameter. Sascha -- 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- | ___ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
Re: [PATCH] Documentation: boards: stm32mp: document eMMC boot configuration
On Wed, May 13, 2020 at 02:53:48PM +0200, Ahmad Fatoum wrote: > In order to boot from eMMC on the STM32MP15x, the boot_ack bit in the > ext_csd register must be set. Document this and while at it, fix a > misformatted code block in the same section. > > Signed-off-by: Ahmad Fatoum > --- > Documentation/boards/stm32mp.rst | 10 +- > 1 file changed, 9 insertions(+), 1 deletion(-) Applied, thanks Sascha -- 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- | ___ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
[PATCH] Documentation: boards: stm32mp: document eMMC boot configuration
In order to boot from eMMC on the STM32MP15x, the boot_ack bit in the
ext_csd register must be set. Document this and while at it, fix a
misformatted code block in the same section.
Signed-off-by: Ahmad Fatoum
---
Documentation/boards/stm32mp.rst | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/Documentation/boards/stm32mp.rst b/Documentation/boards/stm32mp.rst
index 607c59fd0757..fc8a68cf4142 100644
--- a/Documentation/boards/stm32mp.rst
+++ b/Documentation/boards/stm32mp.rst
@@ -63,7 +63,7 @@ An appropriate image for a SD-Card can be generated with
following
}
For eMMC, the boot partitions are used as the FSBL partitions and so the user
-partitions may look like this:
+partitions may look like this::
image @STM32MP_BOARD@.img {
partition ssbl {
@@ -79,6 +79,14 @@ partitions may look like this:
The fsbl1 and fsbl2 can be flashed by writing to barebox ``/dev/mmcX.boot0``
and
``/dev/mmcX.boot1`` respectively or from a booted operating system.
+Additionally, the eMMC's ``ext_csd`` register must be modified to activate the
+boot acknowledge signal and to select a boot partition, e.g.::
+
+ mmcX.boot_ack=1
+ mmcX.boot=boot0
+
+The STM32MP1 BootROM does *not* support booting eMMC without fast boot
acknowledge.
+
Boot source selection
-
--
2.26.2
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