[U-Boot] [PATCH 0/4] Ability to load linux kernel on rock2 RK3288

[Sandy Patterson]

I wasn't able to load the linux kernel using a Rock2 board
using the latest master branch. The board hangs after it has
handed executing over to the kernel. I found that the latest release
that worked was v2016.03.

I did some searching and I suspect the problem may be cache related.

This patchset allows the kernel to start by reverting two problem
commits and disabling EFI_LOADER which I suspect rubs the caching the
wrong way. We also found that the 512M limit for fdt and initrd is now 256M.
I'm not sure why this is.

This still doesn't work 100%. I think it's not initializing the SD card
volages correctly, but at least the Kernel is loading.

I also am not sure changing the caching for all armv7 is the right
answer. I wasn't too sure about the revert. I am not very familiar with
this low level stuff.

Sandy Patterson


Sandy Patterson (4):
  Revert "arm: Replace v7_maint_dcache_all(ARMV7_DCACHE_CLEAN_INVAL_ALL)
    with asm code"
  Revert "arm: Replace v7_maint_dcache_all(ARMV7_DCACHE_INVAL_ALL) with
    asm code"
  Disable CONFIG_EFI_LOADER for rock2.
  RK3288 needs fdt and initrd below 256M now.

 arch/arm/cpu/armv7/Makefile                  |   2 +-
 arch/arm/cpu/armv7/cache_v7.c                | 135 ++++++++++++++++++++++-
 arch/arm/cpu/armv7/cache_v7_asm.S            | 154 ---------------------------
 arch/arm/mach-uniphier/arm32/lowlevel_init.S |  67 +++++++++++-
 configs/rock2_defconfig                      |   1 +
 include/configs/rk3288_common.h              |   6 +-
 6 files changed, 201 insertions(+), 164 deletions(-)
 delete mode 100644 arch/arm/cpu/armv7/cache_v7_asm.S

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1.9.1