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

[Jagan Teki]

HiFive Unleashed A00 has internal is25wp256 spi-nor flash,
so enable the same. added test result log for future reference.

Tested on Sifive fuse540 board.

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
+   SF: Detected is25wp256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
+   => sf erase 0x1000000 0x100000
+   SF: 1048576 bytes @ 0x1000000 Erased: OK
+   => mw.b 0xc0000000 0xaa 0x100000
+   => sf write 0xc0000000 0x1000000 0x100000
+   device 0 offset 0x1000000, size 0x100000
+   SF: 1048576 bytes @ 0x1000000 Written: OK
+   => sf read 0xf0000000 0x1000000 0x100000
+   device 0 offset 0x1000000, size 0x100000
+   SF: 1048576 bytes @ 0x1000000 Read: OK
+   => cmp.b 0xf0000000 0xc0000000 0x100000
+   Total of 1048576 byte(s) were the same
-- 
2.18.0.321.gffc6fa0e3