[U-Boot] [PATCH 5/5] sifive: fu540: Enable spi-nor flash support

[Jagan Teki]

On Mon, Sep 30, 2019 at 3:35 PM Bin Meng <bmeng.cn at gmail.com> wrote:
>
> On Sun, Sep 29, 2019 at 3:43 PM Jagan Teki <jagan at amarulasolutions.com> wrote:
> >
> > HiFive Unleashed A00 has internal is25wp256 spi-nor flash,
>
> What does "internal" mean? The flash is mounted "externally" to the FU540 SoC.
>
> > so enable the same. added test result log for future reference.
> >
> > Tested on Sifive fuse540 board.
>
> SiFive FU540
>
> >
> > Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
> > ---
> >  .../dts/hifive-unleashed-a00-u-boot.dtsi      |  1 +
> >  board/sifive/fu540/Kconfig                    |  3 +++
> >  doc/board/sifive/fu540.rst                    | 19 +++++++++++++++++++
> >  3 files changed, 23 insertions(+)
> >
> > diff --git a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
> > index 25ec8265a5..d7a64134db 100644
> > --- a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
> > +++ b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
> > @@ -5,6 +5,7 @@
> >
> >  / {
> >         aliases {
> > +               spi0 = &qspi0;
> >                 spi2 = &qspi2;
> >         };
> >  };
> > diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig
> > index 5d65080429..c5a1bca03c 100644
> > --- a/board/sifive/fu540/Kconfig
> > +++ b/board/sifive/fu540/Kconfig
> > @@ -26,6 +26,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
> >         imply CMD_FS_GENERIC
> >         imply CMD_NET
> >         imply CMD_PING
> > +       imply CMD_SF
> >         imply CLK_SIFIVE
> >         imply CLK_SIFIVE_FU540_PRCI
> >         imply DOS_PARTITION
> > @@ -40,6 +41,8 @@ config BOARD_SPECIFIC_OPTIONS # dummy
> >         imply SIFIVE_SERIAL
> >         imply SPI
> >         imply SPI_SIFIVE
> > +       imply SPI_FLASH
> > +       imply SPI_FLASH_ISSI
> >         imply MMC
> >         imply MMC_SPI
> >         imply MMC_BROKEN_CD
> > diff --git a/doc/board/sifive/fu540.rst b/doc/board/sifive/fu540.rst
> > index 91b94ee06f..2e70cad02e 100644
> > --- a/doc/board/sifive/fu540.rst
> > +++ b/doc/board/sifive/fu540.rst
> > @@ -366,3 +366,22 @@ load uImage.
> >
> >     Please press Enter to activate this console.
> >     / #
> > +
> > +Sample spi nor flash test
> > +-------------------------
> > +
> > +.. code-block:: none
> > +
> > +   => sf probe 0:2
>
> Why cs 2? The flash is definitely on cs 0.
>
> You may find my patch series useful to solve this issue of the cs number.
> http://patchwork.ozlabs.org/project/uboot/list/?series=129736

I have checked this, while working on this. let me rebase again.