Re: [PATCH v1 6/8] configs: cyclone5: Enable SPL FAT support

["Chee, Tien Fong" <tienfong.chee@altera.com>]

Hi Jan,

On 25/11/2025 5:44 pm, Jan Kiszka wrote:
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>
> On 25.11.25 10:41, Jan Kiszka wrote:
>> On 25.11.25 09:13, alif.zakuan.yuslaimi@altera.com wrote:
>>> From: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>
>>>
>>> Enable support for FAT filesystem with SPL for CycloneV instead of raw
>>> mode.
>>>
>>> Recent changes breaks CycloneV MMC boot from raw mode, and so we are taking
>>> this opportunity to migrate MMC boot mode to FAT as smaller OCRAM size is
>>> required, as well as aligning MMC boot flow with our other devices.
>>>
>>> Fixes: 2a00d73d081a1 ("spl: mmc: Try to clean up raw-mode options")
>>>
>>> Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>
>>> ---
>>>   configs/socfpga_cyclone5_defconfig | 2 ++
>>>   1 file changed, 2 insertions(+)
>>>
>>> diff --git a/configs/socfpga_cyclone5_defconfig b/configs/socfpga_cyclone5_defconfig
>>> index 2bec82b0625..2b2435a27bb 100644
>>> --- a/configs/socfpga_cyclone5_defconfig
>>> +++ b/configs/socfpga_cyclone5_defconfig
>>> @@ -12,6 +12,7 @@ CONFIG_DM_RESET=y
>>>   CONFIG_SPL_STACK=0x0
>>>   CONFIG_SPL_TEXT_BASE=0xFFFF0000
>>>   CONFIG_TARGET_SOCFPGA_CYCLONE5_SOCDK=y
>>> +CONFIG_SPL_FS_FAT=y
>>>   CONFIG_TIMESTAMP=y
>>>   CONFIG_FIT=y
>>>   CONFIG_DISTRO_DEFAULTS=y
>>> @@ -27,6 +28,7 @@ CONFIG_SPL_PAD_TO=0x10000
>>>   CONFIG_SPL_NO_BSS_LIMIT=y
>>>   # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
>>>   CONFIG_SPL_HAVE_INIT_STACK=y
>>> +# CONFIG_SPL_SYS_MMCSD_RAW_MODE is not set
>>>   CONFIG_SPL_SPI_LOAD=y
>>>   CONFIG_SYS_SPI_U_BOOT_OFFS=0x40000
>>>   CONFIG_SYS_MAXARGS=32
>> But what about other boards for the cycline5? If you want to switch,
>> switch them all. This looks half-backed.
>>
> BTW, the FAT refers to a u-boot.bin file on a fat partition, right? And
> the SPL will be kept in the A2 raw partition then?

Yes, that’s correct. SPL remains in the raw/A2 partition as required by 
the Boot ROM. U-Boot proper is moved to a FAT32 partition.


Thanks.

Tien Fong