[PATCH v2 00/21] 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:
1. Lock parts of the d-cache for initial stack so the rest of the code can
   be reimplemented in C.
2. Memory controller & DDR initialization have been fully written to support
   detecting DDR size automatically.
3. DDR calibration has also been reimplemented with a clear logic.
4. 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:
1. 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.
2. Generate compressed u-boot.bin image for SPL to reduce size of final
   combined binary.
3. Enable DM support for SPL for a more flexible device probing.
4. Add a demo board (mt7628_rfb) aims at router application.

Changes since v1:
1. Split 'mips: mtmips: rewrite lowlevel codes of mt7628' into multiple patches.
2. Dropped a patch which tried to use customized get_tbclk().
3. Dropped a patch which tried to rename mt7628a.dtsi to mt7628.dtsi
4. Refactor the patch which restores exception vector base before booting linux.
5. Define a new option to enable u_boot_list in SPL.
6. Enable compressed spl payload for all boards.
7. Enable DM and DT support for linkit and gardena-smart-gateway.
8. Complete pinmux for all three UARTs for SPL.
9. Rewrite u_boot_lzma_img.py.

Weijie Gao (21):
  mips: add support to restore exception vector base before booting
    linux
  mips: mtmips: add predefined i-cache/d-cache size and linesize
  mips: add an option to support initialize SRAM for initial stack
  mips: start.S: avoid overwriting outside gd when clearing global data
    in stack
  sysreset: add reset controller based reboot driver
  mips: mtmips: make use of sysreset-resetctrl for mt7628 soc
  configs: enable CONFIG_RESTORE_EXCEPTION_VECTOR_BASE for all mtmips
    boards
  mips: add a mtmips-specific field to architecture-specific global data
  mips: add a option to support not reserving malloc space on initial
    stack
  mips: mtmips: rewrite lowlevel codes of mt7628
  dts: mtmips: remove all unusable nodes and properties from
    mt7628s.dtsi
  dts: mtmips: add u-boot,dm-pre-reloc for some nodes in mt7628a.dtsi
  dts: mtmips: add alternative pinmux node for uart2
  mips: enable support for appending dtb to spl binary
  mips: add an option to enable u_boot_list section for SPL loaders in
    u-boot-spl.lds
  lib: enable lzma decompression support for SPL build
  Makefile: add support to generate LZMA compressed u-boot image
  tools: binman: add etype file for u-boot-lzma-img
  mips: mtmips: add SPL support
  mips: mtmips: enable SPL for all boards
  mips: mtmips: add support for mt7628-rfb

 Makefile                                      |  22 ++
 arch/mips/Kconfig                             |  60 ++++
 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              |  24 ++
 arch/mips/dts/mt7628a.dtsi                    |  93 ++---
 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                 | 133 +++----
 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/include/mach/spl.h      |  14 +
 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                   |  35 ++
 arch/mips/mach-mtmips/spl_load.c              | 121 +++++++
 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 +
 ...gardena-smart-gateway-mt7688-ram_defconfig |  74 ----
 .../gardena-smart-gateway-mt7688_defconfig    |  15 +-
 configs/linkit-smart-7688-ram_defconfig       |  65 ----
 configs/linkit-smart-7688_defconfig           |  15 +-
 configs/mt7628_rfb_defconfig                  |  45 +++
 drivers/sysreset/Kconfig                      |   6 +
 drivers/sysreset/Makefile                     |   1 +
 drivers/sysreset/sysreset_resetctl.c          |  48 +++
 .../configs/gardena-smart-gateway-mt7688.h    |  18 +-
 include/configs/linkit-smart-7688.h           |  19 +-
 include/configs/mt7628.h                      |  52 +++
 lib/Kconfig                                   |   5 +
 lib/Makefile                                  |   1 +
 tools/binman/README.entries                   |  15 +
 tools/binman/etype/u_boot_lzma_img.py         |  28 ++
 52 files changed, 1987 insertions(+), 1041 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
 create mode 100644 arch/mips/mach-mtmips/include/mach/spl.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 arch/mips/mach-mtmips/spl_load.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