eabdd0252a
The value from raw_read_cntfrq_el0() could be large enough to cause overflow when multiplied by USECS_PER_SEC. To prevent this, both USECS_PER_SEC and hz can be reduced by dividing them by their GCD. This patch also modifies the return type of `timer_hz()` from `uint64_t` to `uint32_t`, assuming that in practice the timestamp counter should never be that fast. BUG=b:307790895 TEST=boot to kernel and check the timestamps from `cbmem` Change-Id: Ia55532490651fcf47128b83a8554751f050bcc89 Signed-off-by: Yidi Lin <yidilin@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/78888 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> |
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.. | ||
arm/arch | ||
arm64/arch | ||
arpa | ||
mock/arch | ||
pci | ||
storage | ||
sys | ||
udc | ||
usb | ||
x86/arch | ||
archive.h | ||
assert.h | ||
boot_device.h | ||
cbfs.h | ||
cbfs_core.h | ||
cbfs_glue.h | ||
cbfs_legacy.h | ||
cbfs_ram.h | ||
cbgfx.h | ||
coreboot_tables.h | ||
ctype.h | ||
delay.h | ||
die.h | ||
endian.h | ||
errno.h | ||
exception.h | ||
fmap.h | ||
fpmath.h | ||
gdb.h | ||
getopt.h | ||
inttypes.h | ||
ipchksum.h | ||
kconfig.h | ||
keycodes.h | ||
libpayload.h | ||
limits.h | ||
lp_vboot.h | ||
lz4.h | ||
lzma.h | ||
malloc.h | ||
multiboot_tables.h | ||
panel.h | ||
pci.h | ||
queue.h | ||
stdarg.h | ||
stdbool.h | ||
stddef.h | ||
stdint.h | ||
stdio.h | ||
stdlib.h | ||
string.h | ||
strings.h | ||
sysinfo.h | ||
term.h | ||
time.h | ||
unistd.h | ||
video_console.h | ||
wchar.h |