1 /*
2 * Copyright (c) 2020, Cypress Semiconductor Corporation. All rights reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #include <stdio.h>
17
18 #include "driver_dap.h"
19
20 #include "cycfg.h"
21 #include "cy_device.h"
22 #include "cy_device_headers.h"
23 #include "cy_ipc_drv.h"
24 #include "cy_prot.h"
25 #include "cy_sysint.h"
26 #include "driver_dap.h"
27 #include "pc_config.h"
28
29 /* DAPControl SysCall opcode */
30 #define DAPCONTROL_SYSCALL_OPCODE (0x3AUL << 24UL)
31
32 /* FlashBoot SysCall success return code */
33 #define CY_FB_SYSCALL_SUCCESS (0xA0000000UL)
34
35 /* SysCall timeout value */
36 #define CY_DAP_SYSCALL_WAIT_MAX_TRIES (15000UL)
37
38
cy_access_port_control(enum cy_ap_name ap,enum cy_ap_control en)39 int cy_access_port_control(enum cy_ap_name ap, enum cy_ap_control en)
40 {
41 int rc = -1;
42 uint32_t syscallCmd, result;
43 uint32_t timeout = 0U;
44
45 syscallCmd = DAPCONTROL_SYSCALL_OPCODE;
46 syscallCmd |= (uint8_t)en << 16;
47 syscallCmd |= (uint8_t)ap << 8;
48 syscallCmd |= 1;
49
50 /* Get IPC base register address */
51 IPC_STRUCT_Type * ipcStruct = Cy_IPC_Drv_GetIpcBaseAddress(CY_IPC_CHAN_SYSCALL);
52
53 while ((CY_IPC_DRV_SUCCESS != Cy_IPC_Drv_LockAcquire(ipcStruct)) &&
54 (timeout < CY_DAP_SYSCALL_WAIT_MAX_TRIES)) {
55 ++timeout;
56 }
57
58 if (timeout < CY_DAP_SYSCALL_WAIT_MAX_TRIES) {
59 timeout = 0U;
60
61 Cy_IPC_Drv_WriteDataValue(ipcStruct, syscallCmd);
62 Cy_IPC_Drv_AcquireNotify(ipcStruct, (1<<CY_IPC_CHAN_SYSCALL));
63
64 while ((Cy_IPC_Drv_IsLockAcquired(ipcStruct))&&
65 (timeout < CY_DAP_SYSCALL_WAIT_MAX_TRIES)) {
66 ++timeout;
67 }
68
69 if (timeout < CY_DAP_SYSCALL_WAIT_MAX_TRIES) {
70 result = Cy_IPC_Drv_ReadDataValue(ipcStruct);
71 if (result != CY_FB_SYSCALL_SUCCESS) {
72 rc = result;
73 }
74 else {
75 rc = 0;
76 }
77 }
78 }
79 return rc;
80 }
81
