1 /***************************************************************************//**
2 * \file startup_cat1b_cm33.c
3 * \version 1.2
4 *
5 * The CAT1B CM33 startup source.
6 *
7 ********************************************************************************
8 * \copyright
9 * Copyright (c) (2020-2022), Cypress Semiconductor Corporation (an Infineon company) or
10 * an affiliate of Cypress Semiconductor Corporation.
11 * SPDX-License-Identifier: Apache-2.0
12 *
13 * Licensed under the Apache License, Version 2.0 (the "License");
14 * you may not use this file except in compliance with the License.
15 * You may obtain a copy of the License at
16 *
17 * http://www.apache.org/licenses/LICENSE-2.0
18 *
19 * Unless required by applicable law or agreed to in writing, software
20 * distributed under the License is distributed on an "AS IS" BASIS,
21 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 * See the License for the specific language governing permissions and
23 * limitations under the License.
24 *******************************************************************************/
25
26 #include "cy_device.h"
27
28 #if defined (CY_IP_M33SYSCPUSS)
29
30 #include <stdio.h>
31 #include <stdint.h>
32 #include <stddef.h>
33
34 #include "startup_cat1b.h"
35 #include "cy_syslib.h"
36 #include "cmsis_compiler.h"
37
38 /*----------------------------------------------------------------------------
39 External References
40 *----------------------------------------------------------------------------*/
41 extern unsigned int __INITIAL_SP;
42 extern unsigned int __STACK_LIMIT;
43
44 #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
45 extern uint32_t __STACK_SEAL;
46 #endif
47
48 extern __NO_RETURN void __PROGRAM_START(void);
49
50 #if defined(__ARMCC_VERSION)
51 #if defined(CY_PDL_TZ_ENABLED)
52 cy_israddress_cat1b __s_vector_table_rw[VECTORTABLE_SIZE] __attribute__( ( section(".bss.noinit.RESET_RAM"))) __attribute__((aligned(VECTORTABLE_ALIGN)));
53 #else
54 cy_israddress_cat1b __ns_vector_table_rw[VECTORTABLE_SIZE] __attribute__( ( section(".bss.noinit.RESET_RAM"))) __attribute__((aligned(VECTORTABLE_ALIGN)));
55 #endif
56 #elif defined (__GNUC__)
57 #if defined(CY_PDL_TZ_ENABLED)
58 cy_israddress_cat1b __s_vector_table_rw[VECTORTABLE_SIZE] __attribute__( ( section(".ram_vectors"))) __attribute__((aligned(VECTORTABLE_ALIGN)));
59 #else
60 cy_israddress_cat1b __ns_vector_table_rw[VECTORTABLE_SIZE] __attribute__( ( section(".ram_vectors"))) __attribute__((aligned(VECTORTABLE_ALIGN)));
61 #endif
62 #elif defined (__ICCARM__)
63 #if defined(CY_PDL_TZ_ENABLED)
64 cy_israddress_cat1b __s_vector_table_rw[VECTORTABLE_SIZE] __attribute__( ( section(".intvec_ram"))) __attribute__((aligned(VECTORTABLE_ALIGN)));
65 #else
66 cy_israddress_cat1b __ns_vector_table_rw[VECTORTABLE_SIZE] __attribute__( ( section(".intvec_ram"))) __attribute__((aligned(VECTORTABLE_ALIGN)));
67 #endif
68 #else
69 #error "An unsupported toolchain"
70 #endif /* (__ARMCC_VERSION) */
71
72
73 /*----------------------------------------------------------------------------
74 Internal References
75 *----------------------------------------------------------------------------*/
76 __NO_RETURN void Reset_Handler (void);
77 void SysLib_FaultHandler(uint32_t const *faultStackAddr);
78 void Default_Handler(void);
79
SysLib_FaultHandler(uint32_t const * faultStackAddr)80 void SysLib_FaultHandler(uint32_t const *faultStackAddr)
81 {
82 Cy_SysLib_FaultHandler(faultStackAddr);
83 }
84
85 /*----------------------------------------------------------------------------
86 Default Handler for Exceptions / Interrupts
87 *----------------------------------------------------------------------------*/
Default_Handler(void)88 void Default_Handler(void)
89 {
90 while(1);
91 }
92
93
94 /*----------------------------------------------------------------------------
95 Exception / Interrupt Handler
96 *----------------------------------------------------------------------------*/
97 void NMIException_Handler(void);
98 void HardFault_Handler(void);
99 void InterruptHandler(void);
100 __WEAK void cy_toolchain_init(void);
101
102
103 // Exception Vector Table & Handlers
104 //----------------------------------------------------------------
NMIException_Handler(void)105 void NMIException_Handler(void)
106 {
107 __asm volatile(
108 "bkpt #10\n"
109 "B .\n"
110 );
111 }
112
HardFault_Handler(void)113 void HardFault_Handler(void)
114 {
115 __asm (
116 "MRS R0, CONTROL\n"
117 "TST R0, #2\n"
118 "ITE EQ\n"
119 "MRSEQ R0, MSP\n"
120 "MRSNE R0, PSP\n"
121 "B SysLib_FaultHandler\n"
122 );
123 }
124
125
InterruptHandler(void)126 void InterruptHandler(void)
127 {
128 __asm volatile(
129 "bkpt #1\n"
130 "B .\n"
131 );
132 }
133
134 void MemManage_Handler (void) __attribute__ ((weak, alias("Default_Handler")));
135 void BusFault_Handler (void) __attribute__ ((weak, alias("HardFault_Handler")));
136 void UsageFault_Handler (void) __attribute__ ((weak, alias("HardFault_Handler")));
137 void SVC_Handler (void) __attribute__ ((weak, alias("HardFault_Handler")));
138 void DebugMon_Handler (void) __attribute__ ((weak, alias("Default_Handler")));
139 void PendSV_Handler (void) __attribute__ ((weak, alias("Default_Handler")));
140 void SysTick_Handler (void) __attribute__ ((weak, alias("Default_Handler")));
141
142 void Interrupt0_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
143 void Interrupt1_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
144 void Interrupt2_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
145 void Interrupt3_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
146 void Interrupt4_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
147 void Interrupt5_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
148 void Interrupt6_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
149 void Interrupt7_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
150 void Interrupt8_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
151 void Interrupt9_Handler (void) __attribute__ ((weak, alias("InterruptHandler")));
152
153 /*----------------------------------------------------------------------------
154 Exception / Interrupt Vector table
155 *----------------------------------------------------------------------------*/
156
157 const cy_israddress __Vectors[VECTORTABLE_SIZE];
158
159 #if defined ( __GNUC__ )
160 #pragma GCC diagnostic push
161 #pragma GCC diagnostic ignored "-Wpedantic"
162 #endif
163
164 const cy_israddress __Vectors[VECTORTABLE_SIZE] __VECTOR_TABLE_ATTRIBUTE = {
165 (cy_israddress)(&__INITIAL_SP), /* Initial Stack Pointer */
166 (cy_israddress)Reset_Handler, /* Reset Handler */
167 (cy_israddress)NMIException_Handler, /* -14 NMI Handler */
168 (cy_israddress)HardFault_Handler, /* -13 Hard Fault Handler */
169 (cy_israddress)MemManage_Handler, /* -12 MPU Fault Handler */
170 (cy_israddress)BusFault_Handler, /* -11 Bus Fault Handler */
171 (cy_israddress)UsageFault_Handler, /* -10 Usage Fault Handler */
172 0, /* -9 Secure Fault Handler */
173 0, /* Reserved */
174 0, /* Reserved */
175 0, /* Reserved */
176 (cy_israddress)SVC_Handler, /* -5 SVCall Handler */
177 0, /* -4 Debug Monitor Handler */
178 0, /* Reserved */
179 (cy_israddress)PendSV_Handler, /* -2 PendSV Handler */
180 (cy_israddress)SysTick_Handler, /* -1 SysTick Handler */
181
182 /* Interrupts */
183 (cy_israddress)Interrupt0_Handler, /* 0 Interrupt 0 */
184 (cy_israddress)Interrupt1_Handler, /* 1 Interrupt 1 */
185 (cy_israddress)Interrupt2_Handler, /* 2 Interrupt 2 */
186 (cy_israddress)Interrupt3_Handler, /* 3 Interrupt 3 */
187 (cy_israddress)Interrupt4_Handler, /* 4 Interrupt 4 */
188 (cy_israddress)Interrupt5_Handler, /* 5 Interrupt 5 */
189 (cy_israddress)Interrupt6_Handler, /* 6 Interrupt 6 */
190 (cy_israddress)Interrupt7_Handler, /* 7 Interrupt 7 */
191 (cy_israddress)Interrupt8_Handler, /* 8 Interrupt 8 */
192 (cy_israddress)Interrupt9_Handler, /* 9 Interrupt 9 */
193 /* Interrupts 10 .. 480 are left out */
194
195 };
196
197 #if defined ( __GNUC__ )
198 #pragma GCC diagnostic pop
199 #endif
200
201 /* Provide empty __WEAK implementation for the low-level initialization
202 routine required by the RTOS-enabled applications.
203 clib-support library provides FreeRTOS-specific implementation:
204 https://github.com/Infineon/clib-support */
cy_toolchain_init(void)205 __WEAK void cy_toolchain_init(void)
206 {
207 }
208
209 #if defined(__GNUC__) && !defined(__ARMCC_VERSION)
210 /* GCC: newlib crt0 _start executes software_init_hook.
211 The cy_toolchain_init hook provided by clib-support library must execute
212 after static data initialization and before static constructors. */
213 void software_init_hook();
software_init_hook()214 void software_init_hook()
215 {
216 cy_toolchain_init();
217 }
218 #elif defined(__ICCARM__)
219 /* Initialize data section */
220 void __iar_data_init3(void);
221
222 /* Call the constructors of all global objects */
223 void __iar_dynamic_initialization(void);
224
225 /* Define strong version to return zero for __iar_program_start
226 to skip data sections initialization (__iar_data_init3). */
227 int __low_level_init(void);
__low_level_init(void)228 int __low_level_init(void)
229 {
230 return 0;
231 }
232 #else
233 /**/
234 #endif /* defined(__GNUC__) && !defined(__ARMCC_VERSION) */
235
236 /*----------------------------------------------------------------------------
237 Reset Handler called on controller reset
238 *----------------------------------------------------------------------------*/
Reset_Handler(void)239 __NO_RETURN void Reset_Handler(void)
240 {
241 /* Disable I cache */
242 ICACHE0->CTL = ICACHE0->CTL & (~ICACHE_CTL_CA_EN_Msk);
243
244 /* Enable ECC */
245 //ICACHE0->CTL = ICACHE0->CTL | ICACHE_CTL_ECC_EN_Msk;
246
247 /* Enable I cache */
248 ICACHE0->CTL = ICACHE0->CTL | ICACHE_CTL_CA_EN_Msk;
249
250 __disable_irq();
251
252 for (uint32_t count = 0; count < VECTORTABLE_SIZE; count++)
253 {
254 #if defined(CY_PDL_TZ_ENABLED)
255 __s_vector_table_rw[count] =__Vectors[count];
256 #else
257 __ns_vector_table_rw[count] =__Vectors[count];
258 #endif
259 }
260 #if defined(CY_PDL_TZ_ENABLED)
261 SCB->VTOR = (uint32_t)__s_vector_table_rw;
262 #else
263 SCB->VTOR = (uint32_t)__ns_vector_table_rw;
264 #endif
265
266 __DMB();
267
268 __set_MSPLIM((uint32_t)(&__STACK_LIMIT));
269
270 SystemInit();
271
272 #if defined(__ICCARM__)
273 /* Initialize data section */
274 __iar_data_init3();
275
276 /* Initialization hook for RTOS environment */
277 cy_toolchain_init();
278
279 /* Call the constructors of all global objects */
280 __iar_dynamic_initialization();
281 #endif
282
283 __PROGRAM_START();
284 }
285
286
287 #if defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
288 #pragma clang diagnostic push
289 #pragma clang diagnostic ignored "-Wmissing-noreturn"
290 #endif
291
292
293 #if defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
294 #pragma clang diagnostic pop
295 #endif
296
297 #endif /* CY_IP_M33SYSCPUSS */
298
