Re: [PATCH 2/4] Platforms: Add ZX RTC driver for Sanchip SoC

[Leif Lindholm <leif.lindholm@linaro.org>]

On Wed, Aug 09, 2017 at 10:12:37PM +0800, Jun Nie wrote:
> Runtime service is not supported yet.
> 
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Jun Nie <jun.nie@linaro.org>
> ---
>  .../Zx6718RealTimeClockLib/Zx296718RealTimeClock.c | 376 +++++++++++++++++++++
>  .../Zx6718RealTimeClockLib/Zx296718RealTimeClock.h | 102 ++++++
>  .../Zx296718RealTimeClock.inf                      |  42 +++
>  3 files changed, 520 insertions(+)
>  create mode 100644 Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.c
>  create mode 100644 Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.h
>  create mode 100644 Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.inf
> 
> diff --git a/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.c b/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.c
> new file mode 100644
> index 0000000..af6e5bd
> --- /dev/null
> +++ b/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.c
> @@ -0,0 +1,376 @@
> +/** @file
> +  Implement EFI RealTimeClock runtime services via RTC Lib.
> +
> +  Currently this driver does not support runtime virtual calling.
> +
> +  Copyright (C) 2017 Sanechips Technology Co., Ltd.
> +  Copyright (c) 2017, Linaro Limited.
> +
> +  This program and the accompanying materials
> +  are licensed and made available under the terms and conditions of the BSD License
> +  which accompanies this distribution.  The full text of the license may be found at
> +  http://opensource.org/licenses/bsd-license.php
> +
> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +
> +  Based on the files under ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.inf
> +
> +**/
> +
> +#include <Uefi.h>
> +#include <PiDxe.h>

P before U.

> +#include <Library/BaseLib.h>
> +#include <Library/BaseMemoryLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/MemoryAllocationLib.h>
> +#include <Library/PcdLib.h>
> +#include <Library/TimerLib.h>
> +#include <Library/UefiBootServicesTableLib.h>
> +#include <Library/UefiLib.h>
> +#include <Library/UefiRuntimeServicesTableLib.h>
> +// Use EfiAtRuntime to check stage
> +#include <Library/UefiRuntimeLib.h>

L (UefiRuntimeLib) before S (UefiRuntimeServices...).
No need for a comment explaining why we include headers.

> +#include <Protocol/RealTimeClock.h>
> +#include "Zx296718RealTimeClock.h"
> +
> +STATIC UINTN       RtcBase;

mRtcBase.

> +STATIC BOOLEAN     RTCInitialized = FALSE;

mRTCInitialized.

> +
> +BOOLEAN
> +EFIAPI
> +IsTimeValid(
> +  IN EFI_TIME *Time
> +  )
> +{
> +  // Check the input parameters are within the range specified by UEFI
> +  if ((Time->Year  < 2000) ||
> +     (Time->Year   > 2099) ||
> +     (Time->Month  < 1   ) ||
> +     (Time->Month  > 12  ) ||
> +     (Time->Day    < 1   ) ||
> +     (Time->Day    > 31  ) ||
> +     (Time->Hour   > 23  ) ||
> +     (Time->Minute > 59  ) ||
> +     (Time->Second > 59  ) ||
> +     (Time->Nanosecond > 999999999) ||
> +     (!((Time->TimeZone == EFI_UNSPECIFIED_TIMEZONE) || ((Time->TimeZone >= -1440) && (Time->TimeZone <= 1440)))) ||
> +     (Time->Daylight & (~(EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT)))
> +  ) {
> +    return FALSE;
> +  }
> +
> +  return TRUE;
> +}

This appears a direct copy of the version in
EmbeddedPkg/Library/TimeBaseLib. Can you add that TimeBaseLib library
dependency to decrease duplication?
(This may not have existed as a standalone library at the time you
started this port.)

> +
> +VOID

A lot of the functions in this file could do with a STATIC prefix,
since they are only used internally.

> +Wait4Busy (

Semantically, this name is incorrect.
The function is waiting _while_ the state is RTC_BUSY, so seems to me
it should be called WaitBusy.

> +  VOID
> +  )
> +{
> +  UINT32 Val, Retry = 1000;
> +  do {
> +    MicroSecondDelay (200);

Why 200?

> +    Val = MmioRead32 (RtcBase + RTCSTS);

MmioRead32 does not imply any barrier semantics.
If this component will only ever be supported on ARM platforms, you
could insert an ArmDataMemoryBarrier (). Otherwise, MemoryFence ().

> +  } while(Val & RTC_BUSY && Retry--);

Space before (.

> +
> +  if (!Retry)
> +    DEBUG((DEBUG_ERROR, "%a Rtc busy retry timeout\n", __func__));

Space after DEBUG.

> +}
> +
> +VOID
> +RTCWriteReg (
> +  IN UINT32 Reg,
> +  IN UINT32 Val
> +  )
> +{
> +  Wait4Busy ();
> +  MmioWrite32 (RtcBase + RTCCFGID, CONFIG_PARMETER);
> +  Wait4Busy ();
> +  MmioWrite32 (RtcBase + Reg, Val);
> +}
> +
> +UINT32
> +RTCReadReg (
> +  IN UINT32 Reg
> +  )
> +{
> +  Wait4Busy ();
> +  return MmioRead32 (RtcBase + Reg);
> +}
> +
> +VOID
> +InitializeRTC (
> +  VOID
> +  )
> +{
> +  UINTN Val = (UINTN)FixedPcdGet64 (PcdZxRtcClockFreq);
> +
> +  RTCWriteReg (RTCCLKCNT, Val - 1);
> +  Val = RTCReadReg (RTCPOWERINIT1);
> +  if (RTC_POWER_INI1_PARA != Val) {
> +    RTCWriteReg (RTCCTL, 0);
> +    MicroSecondDelay (INIT_DELAY);
> +    Val = RTCReadReg (RTCCTL);
> +    Val |= RTC_CTRL_BIT6_1;
> +    RTCWriteReg (RTCCTL, Val);
> +    Val = RTCReadReg (RTCCTL);
> +    Val &= RTC_CTRL_MODULE24 | RTC_CTRL_STOP;
> +    RTCWriteReg (RTCCTL, Val);
> +  }
> +  Val = RTCReadReg (RTCINT);
> +  Val &= ~RTC_IT_MASK;
> +  RTCWriteReg (RTCINT, Val);
> +  Val = RTCReadReg (RTCSTS);
> +  Val |= (RTC_POWER_UP | RTC_ALARM | RTC_TIMER);
> +  RTCWriteReg (RTCSTS, Val);
> +  //Wait4Busy ();

No disabled code, please.

> +  // TODO: write 0x6 to AON int clear

TODO is fine for early pass of review to get some overall feedback,
but this needs to be resolved before anything is merged.

> +  RTCWriteReg (RTCPOWERINIT1, RTC_POWER_INI1_PARA);
> +  RTCWriteReg (RTCPOWERINIT2, RTC_POWER_INI2_PARA);
> +  Val = RTC_CTRL_MODULE24 | RTC_CTRL_RUN | RTC_CTRL_CLK_32K_OUTEN
> +        | RTC_CTRL_BIT6_1;

Could there be a more human readable alias for RTC_CTRL_BIT6_1
(describing what setting that bit actually does)?

> +  RTCWriteReg (RTCCTL, Val);
> +
> +  RTCInitialized = TRUE;
> +}
> +
> +/**
> +  Returns the current time and date information, and the time-keeping capabilities
> +  of the hardware platform.
> +
> +  @param  Time                   A pointer to storage to receive a snapshot of the current time.
> +  @param  Capabilities           An optional pointer to a buffer to receive the real time clock
> +                                 device's capabilities.
> +
> +  @retval EFI_SUCCESS            The operation completed successfully.
> +  @retval EFI_INVALID_PARAMETER  Time is NULL.
> +  @retval EFI_DEVICE_ERROR       The time could not be retrieved due to hardware error.
> +  @retval EFI_SECURITY_VIOLATION The time could not be retrieved due to an authentication failure.
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibGetTime (
> +  OUT EFI_TIME                *Time,
> +  OUT EFI_TIME_CAPABILITIES   *Capabilities
> +  )
> +{
> +  EFI_STATUS  Status = EFI_SUCCESS;
> +
> +  // Ensure Time is a valid pointer
> +  if (NULL == Time) {

No jeopardy comparisons please.
if (Time == NULL)

> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  // Initialize the hardware if not already done
> +  if (!RTCInitialized) {
> +    InitializeRTC ();
> +  }
> +
> +#if 0
> +      /* fake time */
> +      Time->Year          = 2015;
> +      Time->Month         = 1;
> +      Time->Day           = 1;
> +      Time->Hour          = 0;
> +      Time->Minute        = 0;
> +      Time->Second        = 0;
> +      Time->Nanosecond    = 0;
> +#endif

No disabled code blocks, please.

> +
> +  RTCWriteReg (RTCGETTIME, 0);
> +  Time->Year = BCD4_2_BIN (RTCReadReg (RTCYEAR));
> +  Time->Year += TM_YEAR_START;
> +
> +  Time->Month = BCD4_2_BIN (RTCReadReg (RTCMONT));
> +  Time->Day = BCD4_2_BIN (RTCReadReg (RTCDAY));
> +  Time->Hour = BCD4_2_BIN (RTCReadReg (RTCHOUR));
> +  Time->Minute = BCD4_2_BIN (RTCReadReg (RTCMIN));
> +  Time->Second = BCD4_2_BIN (RTCReadReg (RTCSEC));
> +  Time->Nanosecond = 0;
> +  Time->Daylight = 0;
> +  Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
> +
> +  if(!IsTimeValid (Time)) {
> +    Status = EFI_UNSUPPORTED;
> +  }
> +
> +  return Status;
> +
> +}
> +
> +
> +/**
> +  Sets the current local time and date information.
> +
> +  @param  Time                  A pointer to the current time.
> +
> +  @retval EFI_SUCCESS           The operation completed successfully.
> +  @retval EFI_INVALID_PARAMETER A time field is out of range.
> +  @retval EFI_DEVICE_ERROR      The time could not be set due due to hardware error.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibSetTime (
> +  IN  EFI_TIME                *Time
> +  )
> +{
> +  EFI_STATUS  Status = EFI_SUCCESS;
> +
> +  // Check the input parameters are within the range specified by UEFI
> +  if(!IsTimeValid (Time)){
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  // Initialize the hardware if not already done
> +  if (!RTCInitialized) {
> +    InitializeRTC ();
> +  }
> +
> +  RTCWriteReg (RTCSEC, BIN2BCD (Time->Second));
> +  RTCWriteReg (RTCMIN, BIN2BCD (Time->Minute));
> +  RTCWriteReg (RTCHOUR, BIN2BCD (Time->Hour));
> +  RTCWriteReg (RTCDAY, BIN2BCD (Time->Day));
> +  RTCWriteReg (RTCMONT, BIN2BCD (Time->Month));
> +  RTCWriteReg (RTCYEAR, BIN2BCD (Time->Year - TM_YEAR_START));
> +  return Status;
> +}
> +
> +
> +/**
> +  Returns the current wakeup alarm clock setting.
> +
> +  @param  Enabled               Indicates if the alarm is currently enabled or disabled.
> +  @param  Pending               Indicates if the alarm signal is pending and requires acknowledgement.
> +  @param  Time                  The current alarm setting.
> +
> +  @retval EFI_SUCCESS           The alarm settings were returned.
> +  @retval EFI_INVALID_PARAMETER Any parameter is NULL.
> +  @retval EFI_DEVICE_ERROR      The wakeup time could not be retrieved due to a hardware error.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibGetWakeupTime (
> +  OUT BOOLEAN     *Enabled,
> +  OUT BOOLEAN     *Pending,
> +  OUT EFI_TIME    *Time
> +  )
> +{
> +  // Not a required feature
> +  return EFI_UNSUPPORTED;
> +}
> +
> +
> +/**
> +  Sets the system wakeup alarm clock time.
> +
> +  @param  Enabled               Enable or disable the wakeup alarm.
> +  @param  Time                  If Enable is TRUE, the time to set the wakeup alarm for.
> +
> +  @retval EFI_SUCCESS           If Enable is TRUE, then the wakeup alarm was enabled. If
> +                                Enable is FALSE, then the wakeup alarm was disabled.
> +  @retval EFI_INVALID_PARAMETER A time field is out of range.
> +  @retval EFI_DEVICE_ERROR      The wakeup time could not be set due to a hardware error.
> +  @retval EFI_UNSUPPORTED       A wakeup timer is not supported on this platform.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibSetWakeupTime (
> +  IN BOOLEAN      Enabled,
> +  OUT EFI_TIME    *Time
> +  )
> +{
> +  // Not a required feature
> +  return EFI_UNSUPPORTED;
> +}
> +
> +
> +
> +/**
> +  This is the declaration of an EFI image entry point. This can be the entry point to an application
> +  written to this specification, an EFI boot service driver, or an EFI runtime driver.
> +
> +  @param  ImageHandle           Handle that identifies the loaded image.
> +  @param  SystemTable           System Table for this image.
> +
> +  @retval EFI_SUCCESS           The operation completed successfully.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibRtcInitialize (
> +  IN EFI_HANDLE                            ImageHandle,
> +  IN EFI_SYSTEM_TABLE                      *SystemTable
> +  )
> +{
> +  EFI_STATUS    Status;
> +  EFI_HANDLE    Handle;
> +
> +

Why blank lines?

> +  EFI_TIME      EfiTime;
> +
> +  // Setup the setters and getters
> +  gRT->GetTime       = LibGetTime;
> +  gRT->SetTime       = LibSetTime;
> +  gRT->GetWakeupTime = LibGetWakeupTime;
> +  gRT->SetWakeupTime = LibSetWakeupTime;
> +
> +

Just one blank line is fine.

> +  RtcBase = (UINTN)FixedPcdGet64 (PcdZxRtcClockBase);
> +
> +  (VOID)gRT->GetTime (&EfiTime, NULL);
> +  if ((EfiTime.Year < 2015) || (EfiTime.Year > 2099)){
> +      EfiTime.Year          = 2015;
> +      EfiTime.Month         = 1;
> +      EfiTime.Day           = 1;
> +      EfiTime.Hour          = 0;
> +      EfiTime.Minute        = 0;
> +      EfiTime.Second        = 0;
> +      EfiTime.Nanosecond    = 0;
> +      Status = gRT->SetTime (&EfiTime);
> +      if (EFI_ERROR (Status))
> +      {
> +        DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", __FUNCTION__,
> +               __LINE__, Status));
> +      }
> +  }
> +
> +  // Install the protocol
> +  Handle = NULL;
> +  Status = gBS->InstallMultipleProtocolInterfaces (
> +                  &Handle,
> +                  &gEfiRealTimeClockArchProtocolGuid,  NULL,
> +                  NULL
> +                 );
> +
> +  return Status;
> +}
> +
> +
> +/**
> +  Fixup internal data so that EFI can be call in virtual mode.
> +  Call the passed in Child Notify event and convert any pointers in
> +  lib to virtual mode.
> +
> +  @param[in]    Event   The Event that is being processed
> +  @param[in]    Context Event Context
> +**/
> +VOID
> +EFIAPI
> +LibRtcVirtualNotifyEvent (
> +  IN EFI_EVENT        Event,
> +  IN VOID             *Context
> +  )
> +{
> +  //
> +  // Only needed if you are going to support the OS calling RTC functions in virtual mode.
> +  // You will need to call EfiConvertPointer (). To convert any stored physical addresses
> +  // to virtual address. After the OS transitions to calling in virtual mode, all future
> +  // runtime calls will be made in virtual mode.
> +  //
> +  return;
> +}
> diff --git a/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.h b/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.h
> new file mode 100644
> index 0000000..3b5a4d4
> --- /dev/null
> +++ b/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.h
> @@ -0,0 +1,102 @@
> +/** @file
> +*
> +*  Copyright (C) 2017 Sanechips Technology Co., Ltd.
> +*  Copyright (c) 2017, Linaro Ltd.
> +*
> +*  This program and the accompanying materials
> +*  are licensed and made available under the terms and conditions of the BSD License
> +*  which accompanies this distribution.  The full text of the license may be found at
> +*  http://opensource.org/licenses/bsd-license.php
> +*
> +*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> +*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +*
> +*  Based on the files under ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.inf
> +**/
> +
> +
> +#ifndef __DS3231_REAL_TIME_CLOCK_H__
> +#define __DS3231_REAL_TIME_CLOCK_H__
> +
> +#define RTC_POWER_INI1_PARA     (0xCDBC)
> +#define RTC_POWER_INI2_PARA     (0xCFCC)
> +#define CONFIG_PARMETER         (0xC1CD)
> +
> +#define ZX_RTC_CMP_VALUE        (0x3FFF)
> +#define WAIT_FOR_COUNT          (2000)
> +#define INIT_DELAY              (100)
> +
> +
> +/* RTC Control register description */
> +#define RTC_CTRL_STOP                   (~(0x1 << 0))
> +#define RTC_CTRL_RUN                    (0x1 << 0)
> +#define RTC_CTRL_ROUND30S               (0x1 << 1)
> +#define RTC_CTRL_AUTO_COMPENSATION      (0x1 << 2)
> +#define RTC_CTRL_MODULE12               (0x1 << 3)
> +#define RTC_CTRL_MODULE24               (~(0x1 << 3))
> +#define RTC_CTRL_SET_32_COUNTER         (0x1 << 5)
> +#define RTC_CTRL_SOFT_RESET             (0x1 << 6)
> +#define RTC_CTRL_CLK_32K_OUTEN          (0x1 << 8)
> +
> +#define RTC_CTRL_BIT6_0                 ( ~(0x1 << 6))
> +#define RTC_CTRL_BIT6_1                 (0x1 << 6)
> +
> +
> +
> +/* RTC Interrupt register description */
> +#define RTC_EVERY_MASK          (0x3 << 0)
> +#define RTC_EVERY_SEC           0x00                    /* second periodic intrrupt */
> +#define RTC_EVERY_MIN           0x01                    /* minute periodic interrupt */
> +#define RTC_EVERY_HR            0x02                    /* hour periodic interrupt */
> +#define RTC_EVERY_DAY           0x03                    /* day periodic interrupt */
> +#define RTC_IT_TIMER            (0x1 << 2)              /* Enable periodic interrupt */
> +#define RTC_IT_ALARM            (0x1 << 3)              /* Enable alarm clock interrupt */
> +#define RTC_IT_MASK             (0x3 << 2)
> +
> +/* RTC Status register description */
> +#define RTC_BUSY                (0x1 << 0)              /* Read-only, indicate refresh*/
> +#define RTC_RUN                 (0x1 << 1)              /* Read-only, RTC is running */
> +#define RTC_ALARM               (0x1 << 6)              /* Read/Write, Alarm interrupt has been generated */
> +#define RTC_TIMER               (0x1 << 7)              /* Read/Write, Timer interrupt has been generated */
> +#define RTC_POWER_UP            (0x1 << 8)              /* Read/Write, Reset */
> +
> +#define TM_YEAR_START               1900
> +
> +#define TM_MONTH_OFFSET             1
> +
> +#define TM_WDAY_SUNDAY              0
> +#define ZX_RTC_SUNDAY               7
> +
> +#define BCD2BIN(val)    (((val) & 0x0f) + ((val) >> 4) * 10)
> +#define BIN2BCD(val)    ((((val) / 10) << 4) + (val) % 10)
> +
> +#define BCD4_2_BIN(x)   (( (x) & 0x0F) +                    \
> +                        ((((x) & 0x0F0) >>   4) * 10)  +    \
> +                        ((((x) & 0xF00) >>   8) * 100) +    \
> +                        ((((x) & 0xF000) >> 12) * 1000))
> +
> +
> +#define BIN_2_BCD4(x)   (((x % 10) & 0x0F)       |          \
> +                        (((x /10 ) % 10)  <<  4) |          \
> +                        (((x /100) % 10)  <<  8) |          \
> +                        (((x /1000) % 10) << 12))
> +
> +/* RTC register offset */
> +#define RTCVER          0
> +#define RTCSEC          4
> +#define RTCMIN          8
> +#define RTCHOUR         0xc
> +#define RTCDAY          0x10
> +#define RTCMONT         0x14
> +#define RTCYEAR         0x18
> +#define RTCWEEK         0x1c
> +#define RTCCTL          0x38
> +#define RTCSTS          0x3c
> +#define RTCINT          0x40
> +#define RTCCFGID        0x48
> +#define RTCPOWERINIT1   0x4c
> +#define RTCPOWERINIT2   0x50
> +#define RTCGETTIME      0x54
> +#define RTCCLKCNT       0x58
> +
> +#endif
> diff --git a/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.inf b/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.inf
> new file mode 100644
> index 0000000..0a6852b
> --- /dev/null
> +++ b/Silicon/Sanchip/Library/Zx6718RealTimeClockLib/Zx296718RealTimeClock.inf
> @@ -0,0 +1,42 @@
> +#/** @file
> +#
> +# Copyright (c) 2017, Linaro Limited. All rights reserved.<BR>
> +#
> +#  This program and the accompanying materials
> +#  are licensed and made available under the terms and conditions of the BSD License
> +#  which accompanies this distribution. The full text of the license may be found at
> +#  http://opensource.org/licenses/bsd-license.php
> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +#
> +#
> +#**/
> +
> +[Defines]
> +  INF_VERSION                    = 0x00010005

0x00010019.
(Or 1.25.)

> +  BASE_NAME                      = Zx296718RealTimeClockLib
> +  FILE_GUID                      = 4e1aaa26-597c-4f01-a8fc-fdf1adc1400f
> +  MODULE_TYPE                    = BASE
> +  VERSION_STRING                 = 1.0
> +  LIBRARY_CLASS                  = RealTimeClockLib
> +
> +[Sources.common]
> +  Zx296718RealTimeClock.c
> +
> +[Packages]
> +  MdePkg/MdePkg.dec
> +  EmbeddedPkg/EmbeddedPkg.dec
> +  Silicon/Sanchip/SanchipPkg.dec

Please sort alphabetically.

> +
> +[LibraryClasses]
> +  IoLib
> +  UefiLib
> +  DebugLib
> +  PcdLib
> +  TimerLib
> +# Use EFiAtRuntime to check stage
> +  UefiRuntimeLib

Please sort alphabetically.

> +
> +[FixedPcd]
> +  gSanchipTokenSpaceGuid.PcdZxRtcClockBase
> +  gSanchipTokenSpaceGuid.PcdZxRtcClockFreq
> -- 
> 1.9.1
>