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0f1f1229b9
Every board other than link does the same thing - filter out the power
button event, then set the WAKE_L gpio level based on the remaining
events. This code doesn't need to be duplicated 7 times, so make it common.
Link didn't filter out the power button wake signal, but works fine
with the common implementation. Like the other boards it gets a power
button wake event via the dedicated PCH PWRBTN# signal.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=suspend link, then wake using power button press
compile all platforms; pass unit tests
Change-Id: Ib3a6d310d0f5e337374b3c331ab2872fe377bdf6
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/171405
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
In the most general case, the flash layout looks something like this: +---------------------+ | Reserved for EC use | +---------------------+ +---------------------+ | Vblock B | +---------------------+ | RW firmware B | +---------------------+ +---------------------+ | Vblock A | +---------------------+ | RW firmware A | +---------------------+ +---------------------+ | FMAP | +---------------------+ | Public root key | +---------------------+ | Read-only firmware | +---------------------+ BIOS firmware (and kernel) put the vblock info at the start of each image where it's easy to find. The Blizzard EC expects the firmware vector table to come first, so we have to put the vblock at the end. This means we have to know where to look for it, but that's built into the FMAP and the RO firmware anyway, so that's not an issue. The RO firmware doesn't need a vblock of course, but it does need some reserved space for vboot-related things. Using SHA256/RSA4096, the vblock is 2468 bytes (0x9a4), while the public root key is 1064 bytes (0x428) and the current FMAP is 644 bytes (0x284). If we reserve 4K at the top of each FW image, that should give us plenty of room for vboot-related stuff.