Hi,
On EFI you have 3 ways to get to do "timer"
1: Simply by waiting X us and calling Boot Service udelay
2: By using event
3: By use the Timestamp GUID
for barebox this would be the best but even on EDK II this is never
ever compiled on any target.
So we have 2 choice, use a Hardware specific timer or implement the
timer using timestamp
This pull request allow you to enable 2 timers and use the best one at
runtime.
EFI x86 (HW specific)
EFI Generic (based on Event)
please pull
The following changes since commit d92ed454107b4d6f0d30fa0271da191ae5911d18:
Merge branch 'for-next/video' into next (2017-02-27 08:51:08 +0100)
are available in the git repository at:
git://git.jcrosoft.org/barebox.git delivery/efi-cs
for you to fetch changes up to f14af7444ad9d8ce674382f222119f5fcd3f2576:
efi: add veriable to report secure boot support and status (2017-02-28
23:05:31 +0800)
----------------------------------------------------------------
Jean-Christophe PLAGNIOL-VILLARD (9):
efi: add prototype and definition for creating and closing event
efi: add prototype and definition for setting timer
efi: move LoaderTimeInitUSec and LoaderDevicePartUUID to postcore initcall
efi: move x86 clocksource init at core initcall level
clocksource: allow to have multiple device from clock source
clocksource: move dummy clock source to init_clock
efi: move x86 clocksource to device/driver
efi: clocksoure: add EFI event timer
efi: add veriable to report secure boot support and status
arch/x86/Kconfig | 2 +-
arch/x86/mach-efi/Makefile | 1 +
arch/x86/mach-efi/clocksource.c | 11 +++++++++++
common/clock.c | 44
+++++++++++++++++++++++++++++++++++---------
common/efi/efi.c | 24 +++++++++++++++++++-----
drivers/clocksource/Kconfig | 6 +++++-
drivers/clocksource/Makefile | 1 +
drivers/clocksource/efi.c | 110
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------------
drivers/clocksource/efi_x86.c | 79
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
drivers/efi/efi-device.c | 33 +++++++++++++++++++++++++++++++++
include/clock.h | 3 ++-
include/efi.h | 25 ++++++++++++++++++++++---
include/efi/efi.h | 2 --
13 files changed, 290 insertions(+), 51 deletions(-)
create mode 100644 arch/x86/mach-efi/clocksource.c
create mode 100644 drivers/clocksource/efi_x86.c
Best Regards,
J.
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