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Sometimes the battery happily reports that it's current temperature is 6280C, which is just a little bit high. This just treats unreasonably high temperatures as an error. BUG=chrome-os-partner:27527 BRANCH=ToT TEST=manual Make the change, watch the EC console while the AP is running and the battery charges and discharges. The problem is intermittent, but when it occurs it shuts the AP down immediately. With this change, it just prints a warning instead. I've also added a check for this to test/sbs_charging_v2.c Change-Id: Ibfa53cf0244499ec52d4887bcd06fb9126c07a6c Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/193277 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.