[PATCH v3 00/20] Refactor the architecture parts of mt7628

[Weijie Gao]

This patch series are divided into two parts:

The main part is to rewrite the whole architecture code of mt7628:
* Lock parts of the d-cache for initial stack so the rest of the code can
  be reimplemented in C.
* Memory controller & DDR initialization have been fully written to support
  detecting DDR size automatically.
* DDR calibration has also been reimplemented with a clear logic.
* Implemented a new sysreset driver to take advantage of the reset
  controller so we can drop the use of syscon-based sysreset to reduce size.

The second part is to add SPL support for mt7628:
* With SPL enabled we can build the ROM-bootable and RAM-bootable binary
  simultaneously, and we can drop RAM boot related configs and defconfig
  files.
* Generate compressed u-boot.bin image for SPL to reduce size of final
  combined binary.
* Enable DM support for SPL for a more flexible device probing.
* Add a demo board (mt7628_rfb) aims at router application.

Changes since v2:
* Dropped a patch which removes unused parts of mt7628a.dtsi
* Move lzma decompression support to common spl_nor.c
* Move u-boot,dm-pre-reloc to u-boot-mt7628.dtsi

 Makefile                                      |  22 ++
 arch/mips/Kconfig                             |  66 ++++
 arch/mips/cpu/start.S                         |  16 +-
 arch/mips/cpu/u-boot-spl.lds                  |   4 +-
 arch/mips/dts/Makefile                        |   1 +
 arch/mips/dts/mediatek,mt7628-rfb.dts         |  67 ++++
 arch/mips/dts/mt7628-u-boot.dtsi              |  56 +++
 arch/mips/dts/mt7628a.dtsi                    |  17 +-
 arch/mips/include/asm/global_data.h           |   3 +
 arch/mips/include/asm/u-boot-mips.h           |   2 +
 arch/mips/lib/bootm.c                         |   3 +
 arch/mips/lib/traps.c                         |  19 +
 arch/mips/mach-mtmips/Kconfig                 | 132 +++----
 arch/mips/mach-mtmips/Makefile                |   8 +-
 arch/mips/mach-mtmips/cpu.c                   |  58 +---
 arch/mips/mach-mtmips/ddr_cal.c               | 211 +++++++++++
 arch/mips/mach-mtmips/ddr_calibrate.c         | 309 -----------------
 arch/mips/mach-mtmips/ddr_init.c              | 194 +++++++++++
 arch/mips/mach-mtmips/include/mach/ddr.h      |  52 +++
 arch/mips/mach-mtmips/include/mach/mc.h       | 180 ++++++++++
 arch/mips/mach-mtmips/include/mach/serial.h   |  13 +
 arch/mips/mach-mtmips/lowlevel_init.S         | 328 ------------------
 arch/mips/mach-mtmips/mt7628/Makefile         |   6 +
 arch/mips/mach-mtmips/mt7628/ddr.c            | 173 +++++++++
 arch/mips/mach-mtmips/mt7628/init.c           | 109 ++++++
 arch/mips/mach-mtmips/mt7628/lowlevel_init.S  | 161 +++++++++
 arch/mips/mach-mtmips/mt7628/mt7628.h         | 104 ++++++
 arch/mips/mach-mtmips/mt7628/serial.c         |  34 ++
 arch/mips/mach-mtmips/mt76xx.h                |  32 --
 arch/mips/mach-mtmips/spl.c                   |  44 +++
 board/gardena/smart-gateway-mt7688/board.c    |   2 +
 board/mediatek/mt7628/Kconfig                 |  12 +
 board/mediatek/mt7628/MAINTAINERS             |   7 +
 board/mediatek/mt7628/Makefile                |   3 +
 board/mediatek/mt7628/board.c                 |   8 +
 common/spl/spl_nor.c                          |  59 +++-
 ...gardena-smart-gateway-mt7688-ram_defconfig |  74 ----
 .../gardena-smart-gateway-mt7688_defconfig    |  16 +-
 configs/linkit-smart-7688-ram_defconfig       |  65 ----
 configs/linkit-smart-7688_defconfig           |  16 +-
 configs/mt7628_rfb_defconfig                  |  46 +++
 drivers/sysreset/Kconfig                      |   6 +
 drivers/sysreset/Makefile                     |   1 +
 drivers/sysreset/sysreset_resetctl.c          |  48 +++
 .../configs/gardena-smart-gateway-mt7688.h    |  20 +-
 include/configs/linkit-smart-7688.h           |  21 +-
 include/configs/mt7628.h                      |  55 +++
 lib/Kconfig                                   |   5 +
 lib/Makefile                                  |   1 +
 tools/binman/README.entries                   |  15 +
 tools/binman/etype/u_boot_lzma_img.py         |  28 ++
 51 files changed, 1952 insertions(+), 980 deletions(-)
 create mode 100644 arch/mips/dts/mediatek,mt7628-rfb.dts
 create mode 100644 arch/mips/dts/mt7628-u-boot.dtsi
 create mode 100644 arch/mips/mach-mtmips/ddr_cal.c
 delete mode 100644 arch/mips/mach-mtmips/ddr_calibrate.c
 create mode 100644 arch/mips/mach-mtmips/ddr_init.c
 create mode 100644 arch/mips/mach-mtmips/include/mach/ddr.h
 create mode 100644 arch/mips/mach-mtmips/include/mach/mc.h
 create mode 100644 arch/mips/mach-mtmips/include/mach/serial.h
 delete mode 100644 arch/mips/mach-mtmips/lowlevel_init.S
 create mode 100644 arch/mips/mach-mtmips/mt7628/Makefile
 create mode 100644 arch/mips/mach-mtmips/mt7628/ddr.c
 create mode 100644 arch/mips/mach-mtmips/mt7628/init.c
 create mode 100644 arch/mips/mach-mtmips/mt7628/lowlevel_init.S
 create mode 100644 arch/mips/mach-mtmips/mt7628/mt7628.h
 create mode 100644 arch/mips/mach-mtmips/mt7628/serial.c
 delete mode 100644 arch/mips/mach-mtmips/mt76xx.h
 create mode 100644 arch/mips/mach-mtmips/spl.c
 create mode 100644 board/mediatek/mt7628/Kconfig
 create mode 100644 board/mediatek/mt7628/MAINTAINERS
 create mode 100644 board/mediatek/mt7628/Makefile
 create mode 100644 board/mediatek/mt7628/board.c
 delete mode 100644 configs/gardena-smart-gateway-mt7688-ram_defconfig
 delete mode 100644 configs/linkit-smart-7688-ram_defconfig
 create mode 100644 configs/mt7628_rfb_defconfig
 create mode 100644 drivers/sysreset/sysreset_resetctl.c
 create mode 100644 include/configs/mt7628.h
 create mode 100644 tools/binman/etype/u_boot_lzma_img.py

-- 
2.17.1