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ONLY pressing the recovery button okays booting from USB

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BUG=chrome-os-partner:1113
TEST=manual

With the dev-switch OFF, insert a bootable USB drive, reboot while holding
down recovery button. It should boot from the USB without prompting for
removal.

With the dev-switch OFF and the same bootable USB drive inserted, run

  crossystem recovery_request=2
  reboot

The BIOS screen should prompt you to remove the USB drive, then to insert it
before it will boot from the USB.

Prior to this fix, using recovery_request=2 would NOT require removal, while
other non-zero values would. NO values of recovery_request should be able to
override the removal request. Only physically pressing the button should
allow booting immediately from recovery mode with the dev-switch OFF.

Change-Id: I6d63ecb761c4b26820091cc7a97ca540b362c22e
Reviewed-on: https://gerrit.chromium.org/gerrit/12143
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Tested-by: Bill Richardson <wfrichar@chromium.org>
This commit is contained in:
Bill Richardson
2011-11-28 12:20:54 -08:00
parent 6d696e532c
commit 759d5c4ccd
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
firmware/lib/vboot_api_kernel.c
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@@ -201,7 +201,7 @@ VbError_t VbBootRecovery(VbCommonParams* cparams, LoadKernelParams* p) {
/* If the dev-mode switch is off and the user didn't press the recovery
* button, require removal of all external media. */
if (!(shared->flags & VBSD_BOOT_DEV_SWITCH_ON) &&
(VBNV_RECOVERY_RO_MANUAL != shared->recovery_reason)) {
!(shared->flags & VBSD_BOOT_REC_SWITCH_ON)) {
VbDiskInfo* disk_info = NULL;
uint32_t disk_count = 0;