[PATCH] configs: socfpga_de10_standard: Fix raw partition booting from SDMMC

[PATCH] configs: socfpga_de10_standard: Fix raw partition booting from SDMMC

[Nimesh Acharya]

When using the default meta-intel-fpga configuration in Yocto
6.0 (Wrynose) for the Terasic DE10-Standard, SPL fails to load
U-Boot from the raw a2 partition on the SDMMC device.

This change configures SPL to locate the raw U-Boot image using the
partition type and data offset, rather than relying on the
default offset relative to the beginning of the SD card.

Signed-off-by: Nimesh Acharya <nimeshacharya197@gmail.com>
---
 configs/socfpga_de10_standard_defconfig | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configs/socfpga_de10_standard_defconfig b/configs/socfpga_de10_standard_defconfig
index 04f9d6c8494..f170778c322 100644
--- a/configs/socfpga_de10_standard_defconfig
+++ b/configs/socfpga_de10_standard_defconfig
@@ -70,3 +70,8 @@ CONFIG_USB_GADGET_DWC2_OTG=y
 CONFIG_USB_GADGET_DOWNLOAD=y
 # CONFIG_SPL_WDT is not set
 CONFIG_SYS_TIMER_COUNTS_DOWN=y
+
+# SPL Fails to load UBOOT without these!
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x200
-- 
2.56.0

Re: [PATCH] configs: socfpga_de10_standard: Fix raw partition booting from SDMMC

[Marek Vasut]

On 10/19/26 10:59 PM, Nimesh Acharya wrote:
> When using the default meta-intel-fpga configuration in Yocto
> 6.0 (Wrynose) for the Terasic DE10-Standard, SPL fails to load
> U-Boot from the raw a2 partition on the SDMMC device.
> 
> This change configures SPL to locate the raw U-Boot image using the
> partition type and data offset, rather than relying on the
> default offset relative to the beginning of the SD card.
> 
> Signed-off-by: Nimesh Acharya <nimeshacharya197@gmail.com>
> ---
>   configs/socfpga_de10_standard_defconfig | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/configs/socfpga_de10_standard_defconfig b/configs/socfpga_de10_standard_defconfig
> index 04f9d6c8494..f170778c322 100644
> --- a/configs/socfpga_de10_standard_defconfig
> +++ b/configs/socfpga_de10_standard_defconfig
> @@ -70,3 +70,8 @@ CONFIG_USB_GADGET_DWC2_OTG=y
>   CONFIG_USB_GADGET_DOWNLOAD=y
>   # CONFIG_SPL_WDT is not set
>   CONFIG_SYS_TIMER_COUNTS_DOWN=y
> +
> +# SPL Fails to load UBOOT without these!
> +CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y
> +CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
> +CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x200

What does get configured in the .config during OE build without these 
options ?

For example SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE is already set to 
0xa2 in arch/arm/mach-socfpga/Kconfig , so that shouldn't be part of 
this patch.

Re: [PATCH] configs: socfpga_de10_standard: Fix raw partition booting from SDMMC

[Nimesh Acharya]

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Thanks for bringing that up. In fact, on running grep -E
'SPL_FS_LOAD_PAYLOAD_NAME|MMCSD_FS_BOOT_PARTITION|MMCSD_RAW_MODE|SPL_FS_FAT|SPL_FS_EXT4|SPL_LOAD_FIT|SPL_RAW_IMAGE'
$B/*/.config

I get this output for the default config:

CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
# CONFIG_SPL_FS_FAT is not set
# CONFIG_SPL_LOAD_FIT is not set
CONFIG_SPL_RAW_IMAGE_SUPPORT=y
CONFIG_SPL_SYS_MMCSD_RAW_MODE=y
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
# CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is not set
# CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE is not set
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x200
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x0
# CONFIG_SPL_FS_EXT4 is not set
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION=1

So, me adding CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2 again is
indeed redundant. I'll fix this soon.

On Tue, 20 Oct, 2026, 7:08 am Marek Vasut, <marek.vasut@mailbox.org> wrote:

> On 10/19/26 10:59 PM, Nimesh Acharya wrote:
> > When using the default meta-intel-fpga configuration in Yocto
> > 6.0 (Wrynose) for the Terasic DE10-Standard, SPL fails to load
> > U-Boot from the raw a2 partition on the SDMMC device.
> >
> > This change configures SPL to locate the raw U-Boot image using the
> > partition type and data offset, rather than relying on the
> > default offset relative to the beginning of the SD card.
> >
> > Signed-off-by: Nimesh Acharya <nimeshacharya197@gmail.com>
> > ---
> >   configs/socfpga_de10_standard_defconfig | 5 +++++
> >   1 file changed, 5 insertions(+)
> >
> > diff --git a/configs/socfpga_de10_standard_defconfig
> b/configs/socfpga_de10_standard_defconfig
> > index 04f9d6c8494..f170778c322 100644
> > --- a/configs/socfpga_de10_standard_defconfig
> > +++ b/configs/socfpga_de10_standard_defconfig
> > @@ -70,3 +70,8 @@ CONFIG_USB_GADGET_DWC2_OTG=y
> >   CONFIG_USB_GADGET_DOWNLOAD=y
> >   # CONFIG_SPL_WDT is not set
> >   CONFIG_SYS_TIMER_COUNTS_DOWN=y
> > +
> > +# SPL Fails to load UBOOT without these!
> > +CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y
> > +CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
> > +CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x200
>
> What does get configured in the .config during OE build without these
> options ?
>
> For example SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE is already set to
> 0xa2 in arch/arm/mach-socfpga/Kconfig , so that shouldn't be part of
> this patch.
>

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Re: [PATCH] configs: socfpga_de10_standard: Fix raw partition booting from SDMMC

[Marek Vasut]

On 10/20/26 10:35 AM, Nimesh Acharya wrote:
> Thanks for bringing that up. In fact, on running grep -E
> 'SPL_FS_LOAD_PAYLOAD_NAME|MMCSD_FS_BOOT_PARTITION|MMCSD_RAW_MODE|SPL_FS_FAT|SPL_FS_EXT4|SPL_LOAD_FIT|SPL_RAW_IMAGE'
> $B/*/.config
> 
> I get this output for the default config:
> 
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
> # CONFIG_SPL_FS_FAT is not set
> # CONFIG_SPL_LOAD_FIT is not set
> CONFIG_SPL_RAW_IMAGE_SUPPORT=y
> CONFIG_SPL_SYS_MMCSD_RAW_MODE=y
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
> # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is not set
> # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE is not set
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x200
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x0
> # CONFIG_SPL_FS_EXT4 is not set
> CONFIG_SYS_MMCSD_FS_BOOT_PARTITION=1
> 
> So, me adding CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2 again is
> indeed redundant. I'll fix this soon.
Please stop top-posting.

Is CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y the only option 
you have to add ?

In any case, please do a V2 and make sure the 
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE is in the right 
place in the defconfig, not at the end.

Re: [PATCH] configs: socfpga_de10_standard: Fix raw partition booting from SDMMC

[Nimesh Acharya]

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On Tue, Oct 20, 2026 at 5:14 PM Nimesh Acharya <nimeshacharya197@gmail.com>
wrote:

> On Tue, Oct 20, 2026 at 4:14 PM Marek Vasut <marek.vasut@mailbox.org>
> wrote:
>
>> On 10/20/26 10:35 AM, Nimesh Acharya wrote:
>> > Thanks for bringing that up. In fact, on running grep -E
>> >
>> 'SPL_FS_LOAD_PAYLOAD_NAME|MMCSD_FS_BOOT_PARTITION|MMCSD_RAW_MODE|SPL_FS_FAT|SPL_FS_EXT4|SPL_LOAD_FIT|SPL_RAW_IMAGE'
>> > $B/*/.config
>> >
>> > I get this output for the default config:
>> >
>> > CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
>> > # CONFIG_SPL_FS_FAT is not set
>> > # CONFIG_SPL_LOAD_FIT is not set
>> > CONFIG_SPL_RAW_IMAGE_SUPPORT=y
>> > CONFIG_SPL_SYS_MMCSD_RAW_MODE=y
>> > CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
>> > # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is not set
>> > # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE is not set
>> > CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x200
>> > CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x0
>> > # CONFIG_SPL_FS_EXT4 is not set
>> > CONFIG_SYS_MMCSD_FS_BOOT_PARTITION=1
>> >
>> > So, me adding CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
>> again is
>> > indeed redundant. I'll fix this soon.
>> Please stop top-posting.
>>
>> Is CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y the only option
>> you have to add ?
>>
>> In any case, please do a V2 and make sure the
>> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE is in the right
>> place in the defconfig, not at the end.
>>
>
> Both, CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y and
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x200 are to be added.
>
> Both of these values are not visibly set in configs/socfpga_de10_standard_defconfig
> nor arch/arm/mach-socfpga/Kconfig in the main branch. The meta-intel-fpga
> layer in Yocto does not set these either, however
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x0 seems to be set by
> default (as seen from the .config) which makes the default OE build
> non-bootable.
>
> The requested change is required to have a bootable system, and has been
> verified on the board.
>
> Sorry for top-posting and sending V2 too soon.
>

Sorry the mail didn't get CC'd to the rest.

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Re: [PATCH] configs: socfpga_de10_standard: Fix raw partition booting from SDMMC

[Marek Vasut]

On 10/20/26 1:44 PM, Nimesh Acharya wrote:
> On Tue, Oct 20, 2026 at 4:14 PM Marek Vasut <marek.vasut@mailbox.org> wrote:
> 
>> On 10/20/26 10:35 AM, Nimesh Acharya wrote:
>>> Thanks for bringing that up. In fact, on running grep -E
>>>
>> 'SPL_FS_LOAD_PAYLOAD_NAME|MMCSD_FS_BOOT_PARTITION|MMCSD_RAW_MODE|SPL_FS_FAT|SPL_FS_EXT4|SPL_LOAD_FIT|SPL_RAW_IMAGE'
>>> $B/*/.config
>>>
>>> I get this output for the default config:
>>>
>>> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2
>>> # CONFIG_SPL_FS_FAT is not set
>>> # CONFIG_SPL_LOAD_FIT is not set
>>> CONFIG_SPL_RAW_IMAGE_SUPPORT=y
>>> CONFIG_SPL_SYS_MMCSD_RAW_MODE=y
>>> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
>>> # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is not set
>>> # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE is not set
>>> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x200
>>> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x0
>>> # CONFIG_SPL_FS_EXT4 is not set
>>> CONFIG_SYS_MMCSD_FS_BOOT_PARTITION=1
>>>
>>> So, me adding CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE=0xa2 again
>> is
>>> indeed redundant. I'll fix this soon.
>> Please stop top-posting.
>>
>> Is CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y the only option
>> you have to add ?
>>
>> In any case, please do a V2 and make sure the
>> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE is in the right
>> place in the defconfig, not at the end.
>>
> 
> Both, CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE=y and
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x200 are to be added.

OK

> Both of these values are not visibly set in
> configs/socfpga_de10_standard_defconfig
> nor arch/arm/mach-socfpga/Kconfig in the main branch. The meta-intel-fpga
> layer in Yocto does not set these either, however
> CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x0 seems to be set by
> default (as seen from the .config) which makes the default OE build
> non-bootable.
> 
> The requested change is required to have a bootable system, and has been
> verified on the board.
> 
> Sorry for top-posting and sending V2 too soon.
Please send a V3, thanks !