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| author | Julius Werner <jwerner@chromium.org> | 2014-12-01 13:11:52 -0800 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2015-04-10 16:49:02 +0200 |
| commit | d0db3a90add3333ccdd70922967ff6f2d9315451 (patch) | |
| tree | 1a0b283e2aea9d10c6f83aa2ad77235b818664af /src/vendorcode/google/chromeos | |
| parent | 2624c8d3375f2f3a121c325c44ba07874be3a089 (diff) | |
| download | coreboot-d0db3a90add3333ccdd70922967ff6f2d9315451.tar.xz | |
vboot2: Reduce minimum required work buffer size
Apparently our initial submission of 16K was a little too generous for
the vboot2 work buffer, and I hear that we should also be well within
bounds for 12K. This patch reduces the minimum asserted by memlayout so
some of our low-mem boards can get a few more kilobytes back for
discretionary spending. Also changes the required minimum alignment to 8
since that's what the current vboot code aligns it to anyway, and add a
warning comment to make it clearer that this is a dangerous number
people should not be playing with lightly.
BRANCH=None
BUG=None
TEST=Built and booted on Pinky.
Original-Change-Id: Iae9c74050500a315c90f5d5517427d755ac1dfea
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/232613
Original-Reviewed-by: Randall Spangler <rspangler@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 64e972f10363451cd544fdf8642bd484463703bc)
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Change-Id: I362b8c33cf79534bb76bd7acda44d467563fe133
Reviewed-on: http://review.coreboot.org/9445
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/vendorcode/google/chromeos')
| -rw-r--r-- | src/vendorcode/google/chromeos/vboot2/memlayout.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/vendorcode/google/chromeos/vboot2/memlayout.h b/src/vendorcode/google/chromeos/vboot2/memlayout.h index 9e1920039d..7903dd230d 100644 --- a/src/vendorcode/google/chromeos/vboot2/memlayout.h +++ b/src/vendorcode/google/chromeos/vboot2/memlayout.h @@ -22,9 +22,12 @@ #ifndef __CHROMEOS_VBOOT2_MEMLAYOUT_H #define __CHROMEOS_VBOOT2_MEMLAYOUT_H +/* Careful: required work buffer size depends on RW properties such as key size + * and algorithm -- what works for you might stop working after an update. Do + * NOT lower the asserted minimum without consulting vboot devs (rspangler)! */ #define VBOOT2_WORK(addr, size) \ - REGION(vboot2_work, addr, size, 4) \ - _ = ASSERT(size >= 16K, "vboot2 work buffer must be at least 16K!"); + REGION(vboot2_work, addr, size, 8) \ + _ = ASSERT(size >= 12K, "vboot2 work buffer must be at least 12K!"); #ifdef __VERSTAGE__ #define VERSTAGE(addr, sz) \ |