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Check keyboard more often in recovery mode

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Currently we check the keyboard each 250ms. This makes for a pretty choppy
experience when changing languages. Change to check every 20ms, without
changing the disk check interval (which remains 1s).

BUG=chrome-os-partner:13717
BRANCH=snow
TEST=manual
Boot into recovery
Try changing language on snow with left/right arrow and see that it updates
instantly.

Change-Id: I2ae411bc36fdb2badac11595b099bca43f116669
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/32463
Commit-Ready: Tom Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Tom Wai-Hong Tam <waihong@chromium.org>
Tested-by: Tom Wai-Hong Tam <waihong@chromium.org>
This commit is contained in:
Simon Glass
2012-09-06 14:55:31 -07:00
committed by Gerrit
parent cf67ca4eb3
commit 74fa20748d
1 changed files with 8 additions and 7 deletions
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15
firmware/lib/vboot_api_kernel.c
View File

@@ -273,8 +273,9 @@ fallout:
return VbTryLoadKernel(cparams, p, VB_DISK_FLAG_FIXED);
}
/* Delay between disk checks in recovery mode */
#define REC_DELAY_INCREMENT 250
/* Delay in recovery mode */
#define REC_DISK_DELAY 1000 /* Check disks every 1s */
#define REC_KEY_DELAY 20 /* Check keys every 20ms */
/* Handle a recovery-mode boot */
VbError_t VbBootRecovery(VbCommonParams* cparams, LoadKernelParams* p) {
@@ -312,18 +313,18 @@ VbError_t VbBootRecovery(VbCommonParams* cparams, LoadKernelParams* p) {
/* Scan keyboard more frequently than media, since x86 platforms
* don't like to scan USB too rapidly. */
for (i = 0; i < 4; i++) {
for (i = 0; i < REC_DISK_DELAY; i += REC_KEY_DELAY) {
VbCheckDisplayKey(cparams, VbExKeyboardRead(), &vnc);
if (VbExIsShutdownRequested())
return VBERROR_SHUTDOWN_REQUESTED;
VbExSleepMs(REC_DELAY_INCREMENT);
VbExSleepMs(REC_KEY_DELAY);
}
}
}
/* Loop and wait for a recovery image */
while (1) {
VBDEBUG(("VbBootRecovery() attempting to load kernel\n"));
VBDEBUG(("VbBootRecovery() attempting to load kernel2\n"));
retval = VbTryLoadKernel(cparams, p, VB_DISK_FLAG_REMOVABLE);
/* Clear recovery requests from failed kernel loading, since we're
@@ -340,7 +341,7 @@ VbError_t VbBootRecovery(VbCommonParams* cparams, LoadKernelParams* p) {
/* Scan keyboard more frequently than media, since x86 platforms don't like
* to scan USB too rapidly. */
for (i = 0; i < 4; i++) {
for (i = 0; i < REC_DISK_DELAY; i += REC_KEY_DELAY) {
key = VbExKeyboardRead();
/* We might want to enter dev-mode from the Insert screen if... */
if (key == 0x04 && /* user pressed Ctrl-D */
@@ -370,7 +371,7 @@ VbError_t VbBootRecovery(VbCommonParams* cparams, LoadKernelParams* p) {
VbCheckDisplayKey(cparams, key, &vnc);
if (VbExIsShutdownRequested())
return VBERROR_SHUTDOWN_REQUESTED;
VbExSleepMs(REC_DELAY_INCREMENT);
VbExSleepMs(REC_KEY_DELAY);
}
}