[U-Boot] [PATCH 3/6] ARM: socfpga: Add the configuration for FPGA SoCFPGA A10 SoCDK

[Chee, Tien Fong]

On Tue, 2019-01-01 at 21:29 +0100, Marek Vasut wrote:
> On 1/1/19 4:32 AM, Chee, Tien Fong wrote:
> > 
> > On Sun, 2018-12-30 at 16:47 +0100, Marek Vasut wrote:
> > > 
> > > On 12/30/18 9:13 AM, tien.fong.chee at intel.com wrote:
> > > > 
> > > > 
> > > > From: Tien Fong Chee <tien.fong.chee at intel.com>
> > > > 
> > > > Update the default configuration file to enable the necessary
> > > > functionality
> > > > to get the SoCFPGA loadfs driver support. This would enable the
> > > > implementation of programming bitstream into FPGA from MMC.
> > > > 
> > > > Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
> > > > ---
> > > >  configs/socfpga_arria10_defconfig |    8 ++++++++
> > > >  1 files changed, 8 insertions(+), 0 deletions(-)
> > > > 
> > > > diff --git a/configs/socfpga_arria10_defconfig
> > > > b/configs/socfpga_arria10_defconfig
> > > > index 6ebda81..8158dbb 100644
> > > > --- a/configs/socfpga_arria10_defconfig
> > > > +++ b/configs/socfpga_arria10_defconfig
> > > > @@ -27,8 +27,16 @@ CONFIG_MTDIDS_DEFAULT="nor0=ff705000.spi.0"
> > > >  # CONFIG_EFI_PARTITION is not set
> > > >  CONFIG_DEFAULT_DEVICE_TREE="socfpga_arria10_socdk_sdmmc"
> > > >  CONFIG_ENV_IS_IN_MMC=y
> > > > +CONFIG_SPL_ENV_SUPPORT=y
> > > >  CONFIG_SPL_DM=y
> > > >  CONFIG_SPL_DM_SEQ_ALIAS=y
> > > > +CONFIG_SPL_DM_MMC=y
> > > > +CONFIG_SPL_MMC_SUPPORT=y
> > > > +CONFIG_SPL_EXT_SUPPORT=y
> > > > +CONFIG_SPL_FAT_SUPPORT=y
> > > > +CONFIG_SPL_DRIVERS_MISC_SUPPORT=y
> > > > +CONFIG_FS_FAT_MAX_CLUSTSIZE=16384
> > > This breaks systems with large FAT clusters. Why is this needed
> > > for
> > > programming the FPGA from MMC ?
> > This is final tuning in term of getting balance between performance
> > and
> > SPL image size for the socdk devkit. User can change that if they
> > need
> > large FAT cluster in their design, right?
> I think it'd rather make sense to fix the FAT driver to avoid
> statically
> allocating those massive buffers for big clusters. I think that can
> be
> done by allocating those on stack instead ... or mallocating them.
I need to explore 1st as i'm not familiar with FAT driver. Or can we
temporary keeping this patch 1st until FAT issue is separately fixed?
>