blob: 31a05f1afac68bc54abd17a4880050580d8e4d24 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*
* Copyright (C) 2017-2019 Alibaba Group Holding Limited
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-08-20 zx.chen CSI Device System Source File
*/
#include <csi_config.h>
#include <soc.h>
#include <csi_core.h>
#include <drv_irq.h>
#ifndef CONFIG_SYSTICK_HZ
#define CONFIG_SYSTICK_HZ 100
#endif
int g_system_clock = IHS_VALUE;
extern int32_t g_top_irqstack;
extern void irq_vectors_init(void);
extern void mm_heap_initialize(void);
int SystemCoreClock = IHS_VALUE; /* System Core Clock Frequency */
extern int __Vectors;
void SystemCoreClockUpdate(void)
{
SystemCoreClock = IHS_VALUE;
}
static void _system_init_for_kernel(void)
{
irq_vectors_init();
csi_coret_config(drv_get_sys_freq() / CONFIG_SYSTICK_HZ, CORET_IRQn); //10ms
drv_irq_enable(CORET_IRQn);
}
/**
* @brief initialize the system
* Initialize the psr and vbr.
* @param None
* @return None
*/
void SystemInit(void)
{
int i;
/* enable mstatus FS */
#if ((CONFIG_CPU_E906F==1) || (CONFIG_CPU_E906FD==1))
uint32_t mstatus = __get_MSTATUS();
mstatus |= (1 << 13);
__set_MSTATUS(mstatus);
#endif
/* enable mxstatus THEADISAEE */
uint32_t mxstatus = __get_MXSTATUS();
mxstatus |= (1 << 22);
/* enable mxstatus MM */
#if ((CONFIG_CPU_E906==1) || (CONFIG_CPU_E906F==1) || (CONFIG_CPU_E906FD==1))
mxstatus |= (1 << 15);
#endif
__set_MXSTATUS(mxstatus);
/* get interrupt level from info */
CLIC->CLICCFG = (((CLIC->CLICINFO & CLIC_INFO_CLICINTCTLBITS_Msk) >> CLIC_INFO_CLICINTCTLBITS_Pos) << CLIC_CLICCFG_NLBIT_Pos);
for (i = 0; i < 64; i++)
{
CLIC->CLICINT[i].IP = 0;
CLIC->CLICINT[i].ATTR = 1; /* use vector interrupt */
}
/* tspend use positive interrupt */
CLIC->CLICINT[Machine_Software_IRQn].ATTR = 0x3;
csi_dcache_enable();
csi_icache_enable();
drv_irq_enable(Machine_Software_IRQn);
_system_init_for_kernel();
}
|
