Diff: source/family/ti/target_reset_ti.c

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/family/ti/target_reset_ti.c	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,62 @@
+/**
+ * @file    target_reset.c
+ * @brief   Target reset for the cc3220sf
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2019, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "swd_host.h"
+#include "target_family.h"
+
+#define GPRCM_0_APPS_SOFT_RESET_ADDR   0x4402D000
+#define GPRCM_0_RESET_MCU_VALUE        0x1
+#define GPRCM_0_RESET_MCU_PERIPH_VALUE 0x2
+
+static uint8_t target_set_state_ti(target_state_t state)
+{
+    swd_set_soft_reset(VECTRESET);
+    if (state == POST_FLASH_RESET)
+    {
+        // TI recommends reset via writing to PRCM register instead of AIRCR.
+        // Reset apps processor and associated peripheral.
+        uint32_t write_value = GPRCM_0_RESET_MCU_PERIPH_VALUE;
+        swd_write_memory(GPRCM_0_APPS_SOFT_RESET_ADDR, (uint8_t *)&write_value, sizeof(write_value));
+        return 1;
+    }
+    return swd_set_target_state_sw(state);
+}
+
+const uint32_t cookieList[]=
+{
+    0x5AA5A55A,
+    0x000FF800,
+    0xEFA3247D
+};
+
+// Override the weak validate_bin_nvic function. The weak function expects NVIC at the beginning of the flash.
+// 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.
+static uint8_t validate_bin_nvic_ti(const uint8_t *buf)
+{
+    return (memcmp(buf, cookieList, sizeof(cookieList)) == 0);
+}
+
+const target_family_descriptor_t g_ti_family = {
+    .family_id = kTI_Cc3220sf_FamilyID,
+    .target_set_state = target_set_state_ti,
+    .validate_bin_nvic = validate_bin_nvic_ti,
+};
+