[PATCH v12 00/18] RISC-V SiFive FU540 support SPL

Pragnesh Patel pragnesh.patel at sifive.com
Mon May 25 09:33:13 CEST 2020

This series add support for SPL to FU540. U-Boot SPL can boot from
L2 LIM (0x0800_0000) and jump to OpenSBI(FW_DYNAMIC firmware) and
U-Boot proper from MMC devices.

This series is also available here [1] for testing
[1] https://github.com/pragnesh26992/u-boot/tree/spl

How to test this patch:
1) Go to OpenSBI-dir : make PLATFORM=generic FW_DYNAMIC=y
2) export OPENSBI=<path to opensbi/build/platform/generic/firmware/fw_dynamic.bin>
3) Change to u-boot-dir
4) make sifive_fu540_defconfig
5) make all
6) Format the SD card (make sure the disk has GPT, otherwise use gdisk to switch)

        # 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

7) sudo dd if=spl/u-boot-spl.bin of=/dev/sda seek=34
8) sudo dd if=u-boot.itb of=/dev/sda seek=2082

Changes in v12:
- Rebase on mainline U-Boot
  Added necessary include files which are not part of common header now
  Remove unnecessary include files

	+#include <linux/bitops.h>
	+#include <linux/delay.h>

	-#include <common.h>
	+#include <log.h>

	+#include <init.h>
	+#include <log.h>
	+#include <linux/delay.h>

	+#include <linux/bitops.h>

	-#include <common.h>
	+#include <asm/cache.h>

	-#include <common.h>
	+#include <log.h>

	-#include <common.h>
	+#include <init.h>
	+#include <log.h>
	+#include <linux/delay.h>

- Update commit description for Release ethernet clock reset
- Update OpenSBI building section in "doc/board/sifive/fu540.rst"

Changes in v11:
- Remove TPL related code and OF_PLATDATA from FU540
  DDR driver (drivers/ram/sifive/fu540_ddr.c)
- Update FU540 doc (doc/board/sifive/fu540.rst)
  Remove unnecessary print

Changes in v10:
- Update commit description for ethernet clock reset
- Update commit description for ddr clock initialization

Changes in v9:
- Remove cache related patches from this series
  sifive: dts: fu540: Enable L2 Cache in U-Boot
  riscv: sifive: fu540: enable all cache ways from U-Boot proper
- Rename SiFive DDR driver from sdram_fu540.c to fu540_ddr.c
  and also do some typo correction in driver
- Remove CONFIG_SPL_BUILD for __prci_ddr_release_reset()
- Release ethernet clock reset instead of ethernet clock
- Squash fu540 cpu patches
- Use spl_boot_device() instead of board_boot_order()

Changes in v8:
- Remove SPL_CRC7_SUPPORT Kconfig option and compile
  crc7.o when CONFIG_MMC_SPI selected
- Add "TODO" in drivers/ram/sifive/sdram_fu540.c
- Remove unnecessary TODO from drivers/clk/sifive/fu540-prci.c
- Make fu540-hifive-unleashed-a00-sdram-ddr4.dtsi file dual-licensed
- Add 2 new patches
  sifive: fu540: Add sample SD gpt partition layout
  sifive: fu540: Add U-Boot proper sector start
- Remove patch
  riscv: Enable cpu clock if it is present
- Update doc/board/sifive/fu540.rst for PLATFORM=generic

Changes in v7:
- Standardize SD gpt partition layout
- Add delay for SiFive OTP driver
- Use DM way for corepll and ddrpll
- Add new cpu fu540 (arch/riscv/cpu/fu540)
- Update document for FU540 (doc/board/sifive/fu540.rst)

Changes in v6:
- Typo Correction
- Make fu540-c000-u-boot.dtsi and hifive-unleashed-a00-u-boot.dtsi
  Dual Licensed
- Sync Hifive unleashed dts from Linux
- Add arch/riscv/fu540 for FU540 specific code

Changes in v5:
- Return read/write bytes for sifive_otp_read and sifive_otp_write
- Correct Palmer's email address

Changes in v4:
- Split misc DM driver patch into multiple patches
- Added new SPL_CRC7_SUPPORT Kconfig option
- Added DM driver for DDR
- Added clk_enable and clk_disable ops in SiFive PRCI driver
- Added early clock initialization for SPL in SiFive PRCI driver
- Added early clock initialization for SPL in SiFive PRCI driver
- Added SPL config options in sifive_fu540_defconfig instead of
  creatiing a new config file for SPL
- Update fu540.rst on how to build and flash U-boot SPL

Changes in v3:
- Remove arch-fu540 and arch-sifive from arch/riscv/include/asm/
- Split SPL patches into DDR and SPL and spl defconfig
- Update fu540/MAINTAINERS file
- Update fu540.rst on how to build and flash U-boot SPL

Changes in v2:
- Add DM driver Sifive OTP
- Split SPL patches into multiple patches
- Add a seprate patch for _image_binary_end and crc7.c
- Add a seprate patch to add board -u-boot.dtsi files
- Update FU540 RISC-V documentation

Jagan Teki (2):
  sifive: fu540: Add sample SD gpt partition layout
  sifive: fu540: Add U-Boot proper sector start

Pragnesh Patel (16):
  misc: add driver for the SiFive otp controller
  riscv: sifive: fu540: Use OTP DM driver for serial environment
  riscv: Add _image_binary_end for SPL
  lib: Makefile: build crc7.c when CONFIG_MMC_SPI
  riscv: sifive: dts: fu540: Add board -u-boot.dtsi files
  sifive: fu540: add ddr driver
  sifive: dts: fu540: Add DDR controller and phy register settings
  riscv: sifive: dts: fu540: add U-Boot dmc node
  clk: sifive: fu540-prci: Add clock enable and disable ops
  clk: sifive: fu540-prci: Add ddr clock initialization
  clk: sifive: fu540-prci: Release ethernet clock reset
  riscv: dts: sifive: Sync hifive-unleashed-a00 dts from linux
  riscv: cpu: fu540: Add support for cpu fu540
  riscv: sifive: fu540: add SPL configuration
  configs: fu540: Add config options for U-Boot SPL
  doc: sifive: fu540: Add description for OpenSBI generic platform

 arch/riscv/Kconfig                            |    1 +
 arch/riscv/cpu/fu540/Kconfig                  |   15 +
 arch/riscv/cpu/fu540/Makefile                 |   11 +
 arch/riscv/cpu/fu540/cpu.c                    |   22 +
 arch/riscv/cpu/fu540/dram.c                   |   38 +
 arch/riscv/cpu/fu540/spl.c                    |   23 +
 arch/riscv/cpu/u-boot-spl.lds                 |    1 +
 arch/riscv/dts/fu540-c000-u-boot.dtsi         |   84 +
 arch/riscv/dts/fu540-c000.dtsi                |   37 +-
 .../dts/fu540-hifive-unleashed-a00-ddr.dtsi   | 1489 +++++++++++++++++
 .../dts/hifive-unleashed-a00-u-boot.dtsi      |   22 +
 arch/riscv/dts/hifive-unleashed-a00.dts       |    9 +
 arch/riscv/include/asm/arch-fu540/clk.h       |   14 +
 arch/riscv/include/asm/arch-fu540/gpio.h      |   38 +
 arch/riscv/include/asm/arch-fu540/spl.h       |   14 +
 board/sifive/fu540/Kconfig                    |   18 +-
 board/sifive/fu540/Makefile                   |    4 +
 board/sifive/fu540/fu540.c                    |  134 +-
 board/sifive/fu540/spl.c                      |   74 +
 common/spl/Kconfig                            |    3 +-
 configs/sifive_fu540_defconfig                |    8 +
 doc/board/sifive/fu540.rst                    |  135 +-
 drivers/clk/sifive/fu540-prci.c               |  177 +-
 drivers/misc/Kconfig                          |    7 +
 drivers/misc/Makefile                         |    1 +
 drivers/misc/sifive-otp.c                     |  275 +++
 drivers/ram/Kconfig                           |    1 +
 drivers/ram/Makefile                          |    2 +
 drivers/ram/sifive/Kconfig                    |   13 +
 drivers/ram/sifive/Makefile                   |    6 +
 drivers/ram/sifive/fu540_ddr.c                |  410 +++++
 include/configs/sifive-fu540.h                |   31 +
 lib/Makefile                                  |    2 +-
 33 files changed, 3013 insertions(+), 106 deletions(-)
 create mode 100644 arch/riscv/cpu/fu540/Kconfig
 create mode 100644 arch/riscv/cpu/fu540/Makefile
 create mode 100644 arch/riscv/cpu/fu540/cpu.c
 create mode 100644 arch/riscv/cpu/fu540/dram.c
 create mode 100644 arch/riscv/cpu/fu540/spl.c
 create mode 100644 arch/riscv/dts/fu540-c000-u-boot.dtsi
 create mode 100644 arch/riscv/dts/fu540-hifive-unleashed-a00-ddr.dtsi
 create mode 100644 arch/riscv/include/asm/arch-fu540/clk.h
 create mode 100644 arch/riscv/include/asm/arch-fu540/gpio.h
 create mode 100644 arch/riscv/include/asm/arch-fu540/spl.h
 create mode 100644 board/sifive/fu540/spl.c
 create mode 100644 drivers/misc/sifive-otp.c
 create mode 100644 drivers/ram/sifive/Kconfig
 create mode 100644 drivers/ram/sifive/Makefile
 create mode 100644 drivers/ram/sifive/fu540_ddr.c


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