Arrow / Mbed OS DAPLink Reset

Repostiory containing DAPLink source code with Reset Pin workaround for HANI_IOT board.

Upstream: https://github.com/ARMmbed/DAPLink

source/family/ti/target_reset_ti.c@0:01f31e923fe2, 2020-04-07 (annotated)

Committer:
Pawel Zarembski
Date:
Tue Apr 07 12:55:42 2020 +0200
Revision:
0:01f31e923fe2
hani: DAPLink with reset workaround

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pawel Zarembski 0:01f31e923fe2 1 /**
Pawel Zarembski 0:01f31e923fe2 2 * @file target_reset.c
Pawel Zarembski 0:01f31e923fe2 3 * @brief Target reset for the cc3220sf
Pawel Zarembski 0:01f31e923fe2 4 *
Pawel Zarembski 0:01f31e923fe2 5 * DAPLink Interface Firmware
Pawel Zarembski 0:01f31e923fe2 6 * Copyright (c) 2009-2019, ARM Limited, All Rights Reserved
Pawel Zarembski 0:01f31e923fe2 7 * SPDX-License-Identifier: Apache-2.0
Pawel Zarembski 0:01f31e923fe2 8 *
Pawel Zarembski 0:01f31e923fe2 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may
Pawel Zarembski 0:01f31e923fe2 10 * not use this file except in compliance with the License.
Pawel Zarembski 0:01f31e923fe2 11 * You may obtain a copy of the License at
Pawel Zarembski 0:01f31e923fe2 12 *
Pawel Zarembski 0:01f31e923fe2 13 * http://www.apache.org/licenses/LICENSE-2.0
Pawel Zarembski 0:01f31e923fe2 14 *
Pawel Zarembski 0:01f31e923fe2 15 * Unless required by applicable law or agreed to in writing, software
Pawel Zarembski 0:01f31e923fe2 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
Pawel Zarembski 0:01f31e923fe2 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Pawel Zarembski 0:01f31e923fe2 18 * See the License for the specific language governing permissions and
Pawel Zarembski 0:01f31e923fe2 19 * limitations under the License.
Pawel Zarembski 0:01f31e923fe2 20 */
Pawel Zarembski 0:01f31e923fe2 21
Pawel Zarembski 0:01f31e923fe2 22 #include "swd_host.h"
Pawel Zarembski 0:01f31e923fe2 23 #include "target_family.h"
Pawel Zarembski 0:01f31e923fe2 24
Pawel Zarembski 0:01f31e923fe2 25 #define GPRCM_0_APPS_SOFT_RESET_ADDR 0x4402D000
Pawel Zarembski 0:01f31e923fe2 26 #define GPRCM_0_RESET_MCU_VALUE 0x1
Pawel Zarembski 0:01f31e923fe2 27 #define GPRCM_0_RESET_MCU_PERIPH_VALUE 0x2
Pawel Zarembski 0:01f31e923fe2 28
Pawel Zarembski 0:01f31e923fe2 29 static uint8_t target_set_state_ti(target_state_t state)
Pawel Zarembski 0:01f31e923fe2 30 {
Pawel Zarembski 0:01f31e923fe2 31 swd_set_soft_reset(VECTRESET);
Pawel Zarembski 0:01f31e923fe2 32 if (state == POST_FLASH_RESET)
Pawel Zarembski 0:01f31e923fe2 33 {
Pawel Zarembski 0:01f31e923fe2 34 // TI recommends reset via writing to PRCM register instead of AIRCR.
Pawel Zarembski 0:01f31e923fe2 35 // Reset apps processor and associated peripheral.
Pawel Zarembski 0:01f31e923fe2 36 uint32_t write_value = GPRCM_0_RESET_MCU_PERIPH_VALUE;
Pawel Zarembski 0:01f31e923fe2 37 swd_write_memory(GPRCM_0_APPS_SOFT_RESET_ADDR, (uint8_t *)&write_value, sizeof(write_value));
Pawel Zarembski 0:01f31e923fe2 38 return 1;
Pawel Zarembski 0:01f31e923fe2 39 }
Pawel Zarembski 0:01f31e923fe2 40 return swd_set_target_state_sw(state);
Pawel Zarembski 0:01f31e923fe2 41 }
Pawel Zarembski 0:01f31e923fe2 42
Pawel Zarembski 0:01f31e923fe2 43 const uint32_t cookieList[]=
Pawel Zarembski 0:01f31e923fe2 44 {
Pawel Zarembski 0:01f31e923fe2 45 0x5AA5A55A,
Pawel Zarembski 0:01f31e923fe2 46 0x000FF800,
Pawel Zarembski 0:01f31e923fe2 47 0xEFA3247D
Pawel Zarembski 0:01f31e923fe2 48 };
Pawel Zarembski 0:01f31e923fe2 49
Pawel Zarembski 0:01f31e923fe2 50 // Override the weak validate_bin_nvic function. The weak function expects NVIC at the beginning of the flash.
Pawel Zarembski 0:01f31e923fe2 51 // On CC3220SF, the beginning of the flash is the cookie list, which allows the boot ROM code to jump into onchip flash directly bypassing external flash.
Pawel Zarembski 0:01f31e923fe2 52 static uint8_t validate_bin_nvic_ti(const uint8_t *buf)
Pawel Zarembski 0:01f31e923fe2 53 {
Pawel Zarembski 0:01f31e923fe2 54 return (memcmp(buf, cookieList, sizeof(cookieList)) == 0);
Pawel Zarembski 0:01f31e923fe2 55 }
Pawel Zarembski 0:01f31e923fe2 56
Pawel Zarembski 0:01f31e923fe2 57 const target_family_descriptor_t g_ti_family = {
Pawel Zarembski 0:01f31e923fe2 58 .family_id = kTI_Cc3220sf_FamilyID,
Pawel Zarembski 0:01f31e923fe2 59 .target_set_state = target_set_state_ti,
Pawel Zarembski 0:01f31e923fe2 60 .validate_bin_nvic = validate_bin_nvic_ti,
Pawel Zarembski 0:01f31e923fe2 61 };
Pawel Zarembski 0:01f31e923fe2 62