mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-18 00:57:59 +09:00
![]() On warm reset, all cores jump to the low_power_start function because iRAM data is retained and because while executing iROM code all cores find the jump flag 0x02020028 set. In low_power_start, cores check the reset status and if true they clear the jump flag and jump back to 0x0. The A7 cores do jump to 0x0 but consider following instructions as a Thumb instructions which in turn makes them loop inside the iROM code instead of jumping to power_down_core. This issue is fixed by replacing the "mov pc" instruction with a "bx" instruction which switches state along with the jump to make the execution unit consider the branch target as an ARM instruction. Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> |
||
---|---|---|
.. | ||
arm720t | ||
arm920t | ||
arm926ejs | ||
arm946es | ||
arm1136 | ||
arm1176 | ||
armv7 | ||
armv8 | ||
pxa | ||
sa1100 | ||
Makefile | ||
u-boot-spl.lds | ||
u-boot.lds |