Randall Spangler 2d4ece9b69 daisy: Clean up pmu initialization
CG_CTRL0 is already set to 2 by pmu_init_registers(), and the battery
charge rate hack was temporary.

BUG=chrome-os-partner:23425
BRANCH=none
TEST=build daisy

Change-Id: I863c8d6d5d5f30375dce14b7d2a30e9e710ef969
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/173915
Reviewed-by: Jeremy Thorpe <jeremyt@chromium.org>
2013-10-23 20:06:57 +00:00
2013-10-23 20:06:57 +00:00
2013-09-17 03:22:12 +00:00
2013-04-29 23:31:28 -07:00
2012-05-11 09:11:52 -07:00
2011-12-08 19:18:06 +00:00

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.
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