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chromeos: Unconditionally clear the EC recovery request

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Add the empty weak function clear_recovery_mode_switch().

Problem:
If GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC is set,
the following will happen:

1. Boot device in recovery mode with Esc + F3 + Pwr.
2. Turn device off with Pwr button.
3. Turn device on with Pwr button.

Device still boots to recovery screen with
recovery_reason:0x02 recovery button pressed.

If GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC isn't set, turning the
device off and on again  with the Pwr button does a normal boot.

Solution:
Unconditionally clear the recovery flag.

BUG=chromium:279607
BRANCH=TOT
TEST=Compile OK.

Original-Change-Id: Ie1e3251a6db12e75e385220e9d3791078393b1bf
Original-Signed-off-by: Sheng-Liang Song <ssl@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/197780
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: Randall Spangler <rspangler@chromium.org>
Original-Commit-Queue: Sheng-liang Song <ssl@google.com>
Original-Tested-by: Sheng-liang Song <ssl@google.com>
(cherry picked from commit 18908bb64c)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I71ca9f3ea8d816c865375ec66a0603ca211f23ae
Reviewed-on: http://review.coreboot.org/7895
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Sheng-Liang Song 2014-04-30 15:46:45 -07:00 • committed by Marc Jones
commit 1d6560fc60
5 changed files with 36 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/vendorcode/google/chromeos/vboot_handoff.c
View file

@ -54,6 +54,12 @@ int vboot_enable_recovery(void)
return !!(vbho->init_params.out_flags & VB_INIT_OUT_ENABLE_RECOVERY);
}
int __attribute__((weak)) clear_recovery_mode_switch(void)
{
// Can be implemented by a mainboard
return 0;
}
int vboot_skip_display_init(void)
{
struct vboot_handoff *vbho;

4
src/vendorcode/google/chromeos/vboot_loader.c
View file

@ -245,8 +245,10 @@ static void vboot_invoke_wrapper(struct vboot_handoff *vboot_handoff)
iflags = &vboot_handoff->init_params.flags;
if (get_developer_mode_switch())
*iflags |= VB_INIT_FLAG_DEV_SWITCH_ON;
if (get_recovery_mode_switch())
if (get_recovery_mode_switch()) {
clear_recovery_mode_switch();
*iflags |= VB_INIT_FLAG_REC_BUTTON_PRESSED;
}
if (get_write_protect_state())
*iflags |= VB_INIT_FLAG_WP_ENABLED;
if (vboot_get_sw_write_protect())