Hi Standy,
On 2016年07月14日 01:51, Sandy Patterson wrote:
I did a little more on this, and talked to someone else here. It seems
that my problem with loading the kernel including these patches is
specific to our kernel and after applying a local patch we have, it
appears to load fine.
So this patchset gets me back to the same functionality in v2016.03.
We're left with the puzzle of what's wrong on the RK3288 regarding
caching and memory.
Sandy Patterson
On Mon, Jul 11, 2016 at 1:38 PM, Sandy Patterson
<apatter...@sightlogix.com <mailto:apatter...@sightlogix.com>> wrote:
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.
I just tried to boot linux kernel on my rk3288 board with the latest
u-boot. Everything looks sane.
board: rk3288-fennec
u-boot: branch u-boot-rockchip/master, also enable CONFIG_EFI_LOADER
boot device: eMMC
bootcmd: mmc dev 1; mmc read 0x2000000 0x14000 0x10000; bootz 0x2000000
(custom partitions layout )
Could try again, let me know if you still have any problem.
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
--
1.9.1
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