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efi_loader: complete implementation of GetTime()

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Implement the missing parts of the GetTime() runtime service.

Fill seconds.
Fill daylight saving time flag correctly.
Provide dummy values for capabilities.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-07-07 23:39:14 +02:00 committed by Alexander Graf
parent 197005ae2a
commit 49de24559d
1 changed files with 40 additions and 11 deletions
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51
lib/efi_loader/efi_runtime.c
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@ -117,24 +117,41 @@ static void EFIAPI efi_reset_system_boottime(
while (1) { }
}
/**
* efi_get_time_boottime - get current time
*
* This function implements the GetTime runtime service.
* See the Unified Extensible Firmware Interface (UEFI) specification
* for details.
*
* @time: pointer to structure to receive current time
* @capabilities: pointer to structure to receive RTC properties
* Return Value: status code
*/
static efi_status_t EFIAPI efi_get_time_boottime(
struct efi_time *time,
struct efi_time_cap *capabilities)
{
#if defined(CONFIG_CMD_DATE) && defined(CONFIG_DM_RTC)
struct rtc_time tm;
#ifdef CONFIG_DM_RTC
efi_status_t ret = EFI_SUCCESS;
int r;
struct rtc_time tm;
struct udevice *dev;
EFI_ENTRY("%p %p", time, capabilities);
r = uclass_get_device(UCLASS_RTC, 0, &dev);
if (r)
return EFI_EXIT(EFI_DEVICE_ERROR);
if (!time) {
ret = EFI_INVALID_PARAMETER;
goto out;
}
r = dm_rtc_get(dev, &tm);
if (r)
return EFI_EXIT(EFI_DEVICE_ERROR);
r = uclass_get_device(UCLASS_RTC, 0, &dev);
if (!r)
r = dm_rtc_get(dev, &tm);
if (r) {
ret = EFI_DEVICE_ERROR;
goto out;
}
memset(time, 0, sizeof(*time));
time->year = tm.tm_year;
@ -142,11 +159,23 @@ static efi_status_t EFIAPI efi_get_time_boottime(
time->day = tm.tm_mday;
time->hour = tm.tm_hour;
time->minute = tm.tm_min;
time->daylight = tm.tm_isdst;
time->second = tm.tm_sec;
time->daylight = EFI_TIME_ADJUST_DAYLIGHT;
if (tm.tm_isdst > 0)
time->daylight |= EFI_TIME_IN_DAYLIGHT;
time->timezone = EFI_UNSPECIFIED_TIMEZONE;
return EFI_EXIT(EFI_SUCCESS);
if (capabilities) {
/* Set reasonable dummy values */
capabilities->resolution = 1; /* 1 Hz */
capabilities->accuracy = 100000000; /* 100 ppm */
capabilities->sets_to_zero = false;
}
out:
return EFI_EXIT(ret);
#else
return EFI_DEVICE_ERROR;
EFI_ENTRY("%p %p", time, capabilities);
return EFI_EXIT(EFI_DEVICE_ERROR);
#endif
}