configs: fu540: Add config options for U-Boot SPL

With sifive_fu540_defconfig:

User can use FSBL or u-boot-spl.bin anyone at a time.

For FSBL,
fsbl->fw_payload.bin (opensbi + U-Boot)

For u-boot-spl.bin,
u-boot-spl.bin->FIT image (opensbi + U-Boot proper + dtb)

U-Boot SPL will be loaded by ZSBL from SD card (replace fsbl.bin with
u-boot-spl.bin) and runs in L2 LIM in machine mode and then load FIT
image u-boot.itb from SD card into RAM.

U-Boot SPL expects u-boot.itb FIT image at the starting of SD card sector
number (0x822) of GUID type "2E54B353-1271-4842-806F-E436D6AF6985"

Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/configs/sifive_fu540_defconfig b/configs/sifive_fu540_defconfig
index f805aacc7afdd7c96b5b490dc273816c85bf7184..8d412f8d6ae28dafffd07da469631c5dc813e6a4 100644 (file)
--- a/configs/sifive_fu540_defconfig
+++ b/configs/sifive_fu540_defconfig
@@ -1,6 +1,11 @@
 CONFIG_RISCV=y
+CONFIG_SPL_GPIO_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x3000
 CONFIG_ENV_SIZE=0x20000
+CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_NR_DRAM_BANKS=1
+CONFIG_SPL=y
+CONFIG_SPL_SPI_SUPPORT=y
 CONFIG_TARGET_SIFIVE_FU540=y
 CONFIG_ARCH_RV64I=y
 CONFIG_RISCV_SMODE=y
@@ -9,7 +14,10 @@ CONFIG_FIT=y
 CONFIG_MISC_INIT_R=y
 CONFIG_DISPLAY_CPUINFO=y
 CONFIG_DISPLAY_BOARDINFO=y
+CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_YMODEM_SUPPORT=y
 CONFIG_OF_BOARD_FIXUP=y
 CONFIG_DEFAULT_DEVICE_TREE="hifive-unleashed-a00"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_SPL_CLK=y
 CONFIG_DM_MTD=y

diff --git a/doc/board/sifive/fu540.rst b/doc/board/sifive/fu540.rst
index 43402cb2e51ee4bb4d7fff4b2cb0c615541ca2a4..15c2eaadaa760769f0f6fe4da129b1292fef227b 100644 (file)
--- a/doc/board/sifive/fu540.rst
+++ b/doc/board/sifive/fu540.rst
@@ -31,6 +31,9 @@ TODO:
         stdout-path = "/soc/serial@10010000:115200";
    };
 
+Booting from MMC using FSBL
+---------------------------
+
 Building
 --------
 
@@ -420,3 +423,124 @@ as well.
 
    Please press Enter to activate this console.
    / #
+
+Booting from MMC using U-Boot SPL
+---------------------------------
+
+Building
+--------
+
+Before building U-Boot SPL, OpenSBI must be built first. OpenSBI can be
+cloned and built for FU540 as below:
+
+.. code-block:: console
+
+       git clone https://github.com/riscv/opensbi.git
+       cd opensbi
+       make PLATFORM=generic
+       export OPENSBI=<path to opensbi/build/platform/generic/firmware/fw_dynamic.bin>
+
+Now build the U-Boot SPL and U-Boot proper
+
+.. code-block:: console
+
+       cd <U-Boot-dir>
+       make sifive_fu540_defconfig
+       make
+
+This will generate spl/u-boot-spl.bin and FIT image (u-boot.itb)
+
+
+Flashing
+--------
+
+ZSBL loads the U-Boot SPL (u-boot-spl.bin) from a partition with GUID type
+5B193300-FC78-40CD-8002-E86C45580B47
+
+U-Boot SPL expects a U-Boot FIT image (u-boot.itb) from a partition with GUID
+type 2E54B353-1271-4842-806F-E436D6AF6985
+
+FIT image (u-boot.itb) is a combination of fw_dynamic.bin, u-boot-nodtb.bin and
+device tree blob (hifive-unleashed-a00.dtb)
+
+Format the SD card (make sure the disk has GPT, otherwise use gdisk to switch)
+
+.. code-block:: none
+
+       # sudo sgdisk --clear \
+       > --set-alignment=2 \
+       > --new=1:34:2081 --change-name=1:loader1 --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \
+       > --new=2:2082:10273 --change-name=2:loader2 --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \
+       > --new=3:10274: --change-name=3:rootfs --typecode=3:0FC63DAF-8483-4772-8E79-3D69D8477DE4 \
+       > /dev/sda
+
+Program the SD card
+
+.. code-block:: none
+
+       sudo dd if=spl/u-boot-spl.bin of=/dev/sda seek=34
+       sudo dd if=u-boot.itb of=/dev/sda seek=2082
+
+Booting
+-------
+Once you plugin the sdcard and power up, you should see the U-Boot prompt.
+
+Sample boot log from HiFive Unleashed board
+-------------------------------------------
+
+.. code-block:: none
+
+       U-Boot SPL 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530)
+       Trying to boot from MMC1
+
+
+       U-Boot 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530)
+
+       CPU:   rv64imafdc
+       Model: SiFive HiFive Unleashed A00
+       DRAM:  8 GiB
+       MMC:   spi@10050000:mmc@0: 0
+       In:    serial@10010000
+       Out:   serial@10010000
+       Err:   serial@10010000
+       Net:   eth0: ethernet@10090000
+       Hit any key to stop autoboot:  0
+       => version
+       U-Boot 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530)
+
+       riscv64-unknown-linux-gnu-gcc (crosstool-NG 1.24.0.37-3f461da) 9.2.0
+       GNU ld (crosstool-NG 1.24.0.37-3f461da) 2.32
+       => mmc info
+       Device: spi@10050000:mmc@0
+       Manufacturer ID: 3
+       OEM: 5344
+       Name: SC16G
+       Bus Speed: 20000000
+       Mode: SD Legacy
+       Rd Block Len: 512
+       SD version 2.0
+       High Capacity: Yes
+       Capacity: 14.8 GiB
+       Bus Width: 1-bit
+       Erase Group Size: 512 Bytes
+       => mmc part
+
+       Partition Map for MMC device 0  --   Partition Type: EFI
+
+       Part    Start LBA       End LBA         Name
+       Attributes
+       Type GUID
+       Partition GUID
+       1     0x00000022      0x00000821      "loader1"
+       attrs:  0x0000000000000000
+       type:   5b193300-fc78-40cd-8002-e86c45580b47
+       guid:   66e2b5d2-74db-4df8-ad6f-694b3617f87f
+       2     0x00000822      0x00002821      "loader2"
+       attrs:  0x0000000000000000
+       type:   2e54b353-1271-4842-806f-e436d6af6985
+       guid:   8befaeaf-bca0-435d-b002-e201f37c0a2f
+       3     0x00002822      0x01dacbde      "rootfs"
+       attrs:  0x0000000000000000
+       type:   0fc63daf-8483-4772-8e79-3d69d8477de4
+       type:   linux
+       guid:   9faa81b6-39b1-4418-af5e-89c48f29c20d