After reboot, the system does not need to serve pending IRQ from
systimer. Therefore, clear systimer IRQ pending bits in init_timer().
For that to work, the systimer compensation version 2.5 needs to be
enabled. Otherwise, inaccurate timestamps may occur after BL31, for
example in depthcharge. As the solution has already been implemented
in time_prepare_v2, mt8189 can adopt this version to fix the issue.
Also remove unnecessary headers in timer.c.
BUG=b:430211678
BRANCH=none
TEST=check the depthcharge timstamp in `cbmem` is correct.
554:finished TPM enable update 399,533 (12,059)
90:starting to load payload 399,541 (8)
15:starting LZMA decompress (ignore for x86) 410,775 (11,234)
16:finished LZMA decompress (ignore for x86) 465,472 (54,697)
99:selfboot jump 487,643 (22,171)
15:starting LZMA decompress (ignore for x86) 490,591 (2,948)
16:finished LZMA decompress (ignore for x86) 502,153 (11,562)
15:starting LZMA decompress (ignore for x86) 502,210 (57)
16:finished LZMA decompress (ignore for x86) 504,510 (2,300)
1000:depthcharge start 534,769 (30,259)
1002:RO vboot init 534,813 (44)
1020:vboot select&load kernel 534,815 (2)
1030:finished EC verification 554,600 (19,785)
1060:finished AuxFW Sync 560,740 (6,140)
1040:finished storage device initialization 612,960 (52,220)
1050:finished reading kernel from disk 639,711 (26,751)
1100:finished vboot kernel verification 710,596 (70,885)
1102:starting kernel decompression/relocation 731,729 (21,133)
1101:jumping to kernel 945,034 (213,305)
Signed-off-by: Vince Liu <vince-wl.liu@mediatek.corp-partner.google.com>
Signed-off-by: Zhanzhan Ge <zhanzhan.ge@mediatek.corp-partner.google.com>
Change-Id: Ic79003b5a5b747a3761fd4612cad6a96ada216b6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88468
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
4d3def7514