[PATCH 00/26 v6] Refactor the architecture parts of mt7628

Stefan Roese
2020-04-08T08:09:16Z

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

Changes since v3:
* Rebased on newest master branch
* Add a test for binman etype u-boot-lzma-img to make sure binman passes 100%
code coverage
* Use u-boot-with-spl.bin for SPL-enabled output file
* Remove unused code from spl_nor loader.

Changes since v5:
* Rebased on newest master branch
* Made lzma decompressing support for legacy U-Boot images more generic, so
that it can be easily integrated into other devices loaders as well

Stefan Roese (4):
spl: Extract legacy image handling into separate file
spl: spl_legacy: Use IS_ENABLED() to remove #ifdef
spl: spl_nor: Move legacy image loading into spl_legacy.c
mips: mtmips: Increase CONFIG_SPL_SYS_MALLOC_F_LEN

Weijie Gao (22):
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: 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
spl: spl_nor: Copy image header to local struct
spl: spl_legacy: Add lzma decompression support for legacy image
spl: spl_legacy: Add cache flush after reading U-Boot image
mips: mtmips: add SPL support
mips: mtmips: enable SPL for all boards
mips: mtmips: add support for mt7628-rfb

Makefile | 19 +
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 | 135 +++----
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/Makefile | 1 +
common/spl/spl.c | 56 +--
common/spl/spl_legacy.c | 116 +++++++
common/spl/spl_nor.c | 31 +-
...gardena-smart-gateway-mt7688-ram_defconfig | 74 ----
.../gardena-smart-gateway-mt7688_defconfig | 14 +-
configs/linkit-smart-7688-ram_defconfig | 65 ----
configs/linkit-smart-7688_defconfig | 14 +-
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 | 21 +-
include/configs/linkit-smart-7688.h | 22 +-
include/configs/mt7628.h | 56 +++
include/spl.h | 14 +
lib/Kconfig | 5 +
lib/Makefile | 1 +
tools/binman/README.entries | 15 +
tools/binman/etype/u_boot_lzma_img.py | 28 ++
tools/binman/ftest.py | 7 +
tools/binman/test/156_u_boot_lzma_img.dts | 11 +
57 files changed, 2077 insertions(+), 1031 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
create mode 100644 common/spl/spl_legacy.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
create mode 100644 tools/binman/test/156_u_boot_lzma_img.dts

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2.26.0