1 /*
2 * Copyright 2017 NXP
3 * All rights reserved.
4 *
5 * SPDX-License-Identifier: BSD-3-Clause
6 */
7
8 #include "fsl_common.h"
9 #include "fsl_debug_console.h"
10 #include "fsl_rdc.h"
11 #include "fsl_iomuxc.h"
12 #include "pin_mux.h"
13 #include "board.h"
14 #include "fsl_clock.h"
15 /*******************************************************************************
16 * Variables
17 ******************************************************************************/
18
19 /*******************************************************************************
20 * Code
21 ******************************************************************************/
22 /* Initialize debug console. */
BOARD_InitDebugConsole(void)23 void BOARD_InitDebugConsole(void)
24 {
25 uint32_t uartClkSrcFreq = BOARD_DEBUG_UART_CLK_FREQ;
26 CLOCK_EnableClock(kCLOCK_Uart2);
27 DbgConsole_Init(BOARD_DEBUG_UART_INSTANCE, BOARD_DEBUG_UART_BAUDRATE, DEBUG_CONSOLE_DEVICE_TYPE_IUART,
28 uartClkSrcFreq);
29 }
30 /* Initialize MPU, configure non-cacheable memory */
BOARD_InitMemory(void)31 void BOARD_InitMemory(void)
32 {
33 #if defined(__CC_ARM) || defined(__ARMCC_VERSION)
34 extern uint32_t Load$$LR$$LR_cache_region$$Base[];
35 extern uint32_t Image$$ARM_LIB_STACK$$ZI$$Limit[];
36 uint32_t cacheStart = (uint32_t)Load$$LR$$LR_cache_region$$Base;
37 uint32_t size = (cacheStart < 0x20000000U) ? (0) : ((uint32_t)Image$$ARM_LIB_STACK$$ZI$$Limit - cacheStart);
38 #else
39 extern uint32_t __CACHE_REGION_START[];
40 extern uint32_t __CACHE_REGION_SIZE[];
41 uint32_t cacheStart = (uint32_t)__CACHE_REGION_START;
42 uint32_t size = (uint32_t)__CACHE_REGION_SIZE;
43 #endif
44 uint32_t i = 0;
45 /* Make sure outstanding transfers are done. */
46 __DMB();
47 /* Disable the MPU. */
48 MPU->CTRL = 0;
49
50 /*
51 * The ARMv7-M default address map define the address space 0x20000000 to 0x3FFFFFFF as SRAM with Normal type, but
52 * there the address space 0x28000000 ~ 0x3FFFFFFF has been physically mapped to smart subsystems, so there need
53 * change the default memory attributes.
54 * Since the base address of MPU region should be multiples of region size, to make it simple, the MPU region 0 set
55 * the all 512M of SRAM space with device attributes, then disable subregion 0 and 1 (address space 0x20000000 ~
56 * 0x27FFFFFF) to use the
57 * background memory attributes.
58 */
59
60 /* Select Region 0 and set its base address to the M4 code bus start address. */
61 MPU->RBAR = (0x20000000U & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (0 << MPU_RBAR_REGION_Pos);
62
63 /* Region 0 setting:
64 * 1) Disable Instruction Access;
65 * 2) AP = 011b, full access;
66 * 3) Non-shared device;
67 * 4) Region Not Shared;
68 * 5) Sub-Region 0,1 Disabled;
69 * 6) MPU Protection Region size = 512M byte;
70 * 7) Enable Region 0.
71 */
72 MPU->RASR = (0x1 << MPU_RASR_XN_Pos) | (0x3 << MPU_RASR_AP_Pos) | (0x2 << MPU_RASR_TEX_Pos) |
73 (0x3 << MPU_RASR_SRD_Pos) | (28 << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
74
75 /*
76 * Non-cacheable area is provided in DDR memory, the DDR region 2MB - 128MB totally 126MB is revserved for CM4
77 * cores. You can put global or static uninitialized variables in NonCacheable section(initialized variables in
78 * NonCacheable.init section) to make them uncacheable. Since the base address of MPU region should be multiples of
79 * region size,
80 * to make it simple, the MPU region 1 & 2 set all DDR address space 0x40000000 ~ 0xBFFFFFFF to be non-cacheable).
81 * Then MPU region 3 set the text and data section to be cacheable if the program running on DDR.
82 * The cacheable area base address should be multiples of its size in linker file, they can be modified per your
83 * needs.
84 */
85
86 /* Select Region 1 and set its base address to the DDR start address. */
87 MPU->RBAR = (0x40000000U & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (1 << MPU_RBAR_REGION_Pos);
88
89 /* Region 1 setting:
90 * 1) Enable Instruction Access;
91 * 2) AP = 011b, full access;
92 * 3) Shared Device;
93 * 4) MPU Protection Region size = 1024M byte;
94 * 5) Enable Region 1.
95 */
96 MPU->RASR = (0x3 << MPU_RASR_AP_Pos) | (0x1 << MPU_RASR_B_Pos) | (29 << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
97
98 /* Select Region 2 and set its base address to the DDR start address. */
99 MPU->RBAR = (0x80000000U & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (2 << MPU_RBAR_REGION_Pos);
100
101 /* Region 2 setting:
102 * 1) Enable Instruction Access;
103 * 2) AP = 011b, full access;
104 * 3) Shared Device;
105 * 4) MPU Protection Region size = 1024M byte;
106 * 5) Enable Region 2.
107 */
108 MPU->RASR = (0x3 << MPU_RASR_AP_Pos) | (0x1 << MPU_RASR_B_Pos) | (29 << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
109
110 while ((size >> i) > 0x1U)
111 {
112 i++;
113 }
114
115 /* If run on DDR, configure text and data section to be cacheable */
116 if (i != 0)
117 {
118 /* The MPU region size should be 2^N, 5<=N<=32, region base should be multiples of size. */
119 assert((size & (size - 1)) == 0);
120 assert(!(cacheStart % size));
121 assert(size == (uint32_t)(1 << i));
122 assert(i >= 5);
123
124 /* Select Region 3 and set its base address to the cache able region start address. */
125 MPU->RBAR = (cacheStart & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (3 << MPU_RBAR_REGION_Pos);
126
127 /* Region 3 setting:
128 * 1) Enable Instruction Access;
129 * 2) AP = 011b, full access;
130 * 3) Outer and inner Cacheable, write and read allocate;
131 * 4) Region Not Shared;
132 * 5) All Sub-Region Enabled;
133 * 6) MPU Protection Region size get from linker file;
134 * 7) Enable Region 3.
135 */
136 MPU->RASR = (0x3 << MPU_RASR_AP_Pos) | (0x1 << MPU_RASR_TEX_Pos) | (0x1 << MPU_RASR_C_Pos) |
137 (0x1 << MPU_RASR_B_Pos) | ((i - 1) << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
138 }
139
140 /* Enable Privileged default memory map and the MPU. */
141 MPU->CTRL = MPU_CTRL_ENABLE_Msk | MPU_CTRL_PRIVDEFENA_Msk;
142 /* Memory barriers to ensure subsequence data & instruction
143 * transfers using updated MPU settings.
144 */
145 __DSB();
146 __ISB();
147 }
148
BOARD_RdcInit(void)149 void BOARD_RdcInit(void)
150 {
151 /* Move M4 core to specific RDC domain 1 */
152 rdc_domain_assignment_t assignment = {0};
153
154 assignment.domainId = BOARD_DOMAIN_ID;
155 RDC_SetMasterDomainAssignment(RDC, kRDC_Master_M4, &assignment);
156 /*
157 * The M4 core is running at domain 1, enable clock gate for Iomux and Gpio to run at domain 1.
158 */
159 CLOCK_EnableClock(kCLOCK_Gpio1);
160 CLOCK_EnableClock(kCLOCK_Gpio2);
161 CLOCK_EnableClock(kCLOCK_Gpio3);
162 CLOCK_EnableClock(kCLOCK_Gpio4);
163 CLOCK_EnableClock(kCLOCK_Gpio5);
164
165 CLOCK_EnableClock(kCLOCK_Iomux0);
166 CLOCK_EnableClock(kCLOCK_Iomux1);
167 CLOCK_EnableClock(kCLOCK_Iomux2);
168 CLOCK_EnableClock(kCLOCK_Iomux3);
169 CLOCK_EnableClock(kCLOCK_Iomux4);
170 /*
171 * The M4 core is running at domain 1, enable the PLL clock sources to domain 1.
172 */
173 CLOCK_ControlGate(kCLOCK_SysPll1Gate, kCLOCK_ClockNeededAll); /* Enabel SysPLL1 to Domain 1 */
174 CLOCK_ControlGate(kCLOCK_SysPll2Gate, kCLOCK_ClockNeededAll); /* Enable SysPLL2 to Domain 1 */
175 CLOCK_ControlGate(kCLOCK_SysPll3Gate, kCLOCK_ClockNeededAll); /* Enable SysPLL3 to Domain 1 */
176 CLOCK_ControlGate(kCLOCK_AudioPll1Gate, kCLOCK_ClockNeededAll); /* Enable AudioPLL1 to Domain 1 */
177 CLOCK_ControlGate(kCLOCK_AudioPll2Gate, kCLOCK_ClockNeededAll); /* Enable AudioPLL2 to Domain 1 */
178 CLOCK_ControlGate(kCLOCK_VideoPll1Gate, kCLOCK_ClockNeededAll); /* Enable VideoPLL1 to Domain 1 */
179 }
180
