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

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

Hi Jan,

On 25/11/2025 5:41 pm, Jan Kiszka wrote:
> [CAUTION: This email is from outside your organization. Unless you trust the sender, do not click on links or open attachments as it may be a fraudulent email attempting to steal your information and/or compromise your computer.]
>
> 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.


The changes only affect the Altera official Cyclone V devkit. Other 
partner and vendor boards may have different MMC layouts, so we are not 
touching those in this patch.

The motivation is to enable FAT filesystem support for SPL on the 
official devkit, which reduces OCRAM usage, aligns the MMC boot flow 
with our other devkits, and avoids the raw-mode issues introduced by 
recent changes (mentioned in your series patches).


Thanks

Tien Fong