[U-Boot] [PATCH v1 0/4] arm: socfgpa: support of-platdata

[Simon Goldschmidt]

This is an initial attempt to support OF_PLATDATA for socfpga gen5.

There are two motivations for this:
a) reduce code size to eventually support secure boot (where SPL has to
   authenticate the next stage by loading/checking U-Boot from a FIT
   image)
b) to support the cyclone 5 boot ROM's CRC check on the SPL in SRAM
   (on warm-restart), all bytes to check need to be in one piece. With
   OF_SEPARATE, this is not the case (.bss is between .rodata and the
   DTB). Since OF_EMBEDDED has been discouraged, OF_PLATDATA seems to
   be a good solution.

This series enables booting from MMC with OF_PLATDATA. Booting from SPI
does not yet work (I'm working on that, but it's tougher than expected).

Tested on the socrates board. To use it:
- use socfpga_socrates_defconfig
- disable CONFIG_SPL_SPI_FLASH_SUPPORT, CONFIG_SPL_SPI_SUPPORT and
  CONFIG_SPL_DM_RESET (those don't work yet)
- enable CONFIG_DESIGNWARE_SERIAL (required for console)


Simon Goldschmidt (4):
  arm: socfpga: imply SPL config instead of select
  arm: socfpga: fix compiling with OF_PLATDATA
  serial: add an of-platdata driver for "snps,dw-apb-uart"
  mmc: socfpga: support of-platdata

 arch/arm/Kconfig               |  4 ++--
 arch/arm/mach-socfpga/misc.c   |  2 +-
 drivers/mmc/socfpga_dw_mmc.c   | 28 ++++++++++++++++++++---
 drivers/serial/Kconfig         | 10 ++++++++
 drivers/serial/Makefile        |  1 +
 drivers/serial/serial_dw_apb.c | 42 ++++++++++++++++++++++++++++++++++
 6 files changed, 81 insertions(+), 6 deletions(-)
 create mode 100644 drivers/serial/serial_dw_apb.c

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2.17.1