util: uartupdatetool (UUT): Add tool to flash firmware by UART

When the FLPRG# strap pin is set to active low, and npcx7 chip is reset,
it will enter uut mode. This CL adds the host tool to communicate with
npcx chip in uut mode to flash ec firmware via UART port.

BRANCH=none
BUG=none
TEST=No build errors for make buildall.
TEST=
------------------------------------------------------------------------
1. Connect the servo connector (J24) on npcx7 EVB to servo board v2 via
flex cable.
2. Manually turn the switch SW1.6 to "ON" on npcx7 EVB.
3. Reset ec by issuing Power-Up or VCC1_RST reset.
4. Manually turn the switch SW1.6 to "OFF" on npcx7 EVB.
5. Move npcx7_evb from array BOARDS_NPCX_7M7X_JTAG to BOARDS_NPCX_UUT in
flash_ec.
6. "./util/flash_ec --board=npcx7_evb."

Change-Id: I2c588418e809e59f97ef4c3ad7ad13a3fef42f11
Signed-off-by: Dror Goldstein <dror.goldstein@nuvoton.com>
Signed-off-by: CHLin <CHLIN56@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/952037
Commit-Ready: CH Lin <chlin56@nuvoton.com>
Tested-by: Alexandru M Stan <amstan@chromium.org>
Tested-by: CH Lin <chlin56@nuvoton.com>
Tested-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

1 files changed, 109 insertions, 0 deletions

diff --git a/util/uut/lib_crc.c b/util/uut/lib_crc.c
new file mode 100644
index 0000000000..176e91327c
--- /dev/null
+++ b/util/uut/lib_crc.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/*
+ * The file lib_crc.c contains the  functions used for the calculation of
+ * CRC-16 cyclic redundancy values.
+ */
+
+#include "lib_crc.h"
+
+/*********************************************************************
+ *                                                                   *
+ *   Library         : lib_crc                                       *
+ *   File            : lib_crc.c                                     *
+ *   Author          : Lammert Bies  1999-2005                       *
+ *   E-mail          : info@lammertbies.nl                           *
+ *   Language        : ANSI C                                        *
+ *                                                                   *
+ *                                                                   *
+ *   Description                                                     *
+ *   ===========                                                     *
+ *                                                                   *
+ *   The file lib_crc.c contains the private  and  public  func-     *
+ *   tions  used  for  the  calculation of CRC-16, CRC-CCITT and     *
+ *   CRC-32 cyclic redundancy values.                                *
+ *                                                                   *
+ *                                                                   *
+ *   Dependencies                                                    *
+ *   ============                                                    *
+ *                                                                   *
+ *   lib_crc.h       CRC definitions and prototypes                  *
+ *                                                                   *
+ *                                                                   *
+ *   Modification history                                            *
+ *   ====================                                            *
+ *                                                                   *
+ *   Date        Version Comment                                     *
+ *                                                                   *
+ *   2005-05-14  1.12    Added CRC-CCITT with start value 0          *
+ *                                                                   *
+ *   2005-02-05  1.11    Fixed bug in CRC-DNP routine                *
+ *                                                                   *
+ *   2005-02-04  1.10    Added CRC-DNP routines                      *
+ *                                                                   *
+ *   1999-02-21  1.01    Added FALSE and TRUE mnemonics              *
+ *                                                                   *
+ *   1999-01-22  1.00    Initial source                              *
+ *                                                                   *
+ *********************************************************************
+ */
+
+/* CRC16 lookup table for polynom 0xA001 */
+static const unsigned short crc16_tab[256] = {
+	0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
+	0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
+	0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
+	0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
+	0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
+	0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
+	0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
+	0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
+	0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
+	0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
+	0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
+	0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
+	0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
+	0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
+	0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
+	0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
+	0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
+	0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
+	0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
+	0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
+	0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
+	0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
+	0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
+	0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
+	0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
+	0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
+	0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
+	0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
+	0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
+	0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
+	0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
+	0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
+};
+
+/*********************************************************************
+ *                                                                   *
+ *   unsigned short update_crc( unsigned long crc, unsigned char c ) *
+ *                                                                   *
+ *   The function update_crc calculates a  new  CRC-16  value        *
+ *   based  on  the  previous value of the CRC and the next byte     *
+ *   of the data to be checked.                                      *
+ *                                                                   *
+ *********************************************************************
+ */
+unsigned short update_crc(unsigned short crc, unsigned char c)
+{
+	unsigned short tmp;
+
+	tmp = crc ^ (0x00ff & (unsigned short)c);
+	crc = (crc >> 8) ^ crc16_tab[tmp & 0xff];
+
+	return crc;
+}