mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-07 08:01:35 +00:00
72be9d5881
in non-S0 states when work with DPTF. If user sleeps/shutdown system when on battery(or when TCHG is throttled), system will never charge while in S3 or S5. BUG=chrome-os-partner:355015 BRANCH=rambi TEST=with the same test system will charge in S3 or S5. Change-Id: Idc68b2f533da0a55ad07d0ff8e3e5294c1e2143c Signed-off-by: Kein Yuan <kein.yuan@intel.com> Reviewed-on: https://chromium-review.googlesource.com/191153 Reviewed-by: Bill Richardson <wfrichar@chromium.org> Reviewed-by: Randall Spangler <rspangler@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.