Commit 49040869 authored by sam's avatar sam

新增 N9H20 GTRx 專案樣板

parent 723d3a64
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;/**************************************************************************//**
; * @file wb_init.s
; * @brief N9H20 series startup code
; *
; * SPDX-License-Identifier: Apache-2.0
; * @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
; *****************************************************************************/
AREA WB_INIT, CODE, READONLY
;--------------------------------------------
; Mode bits and interrupt flag (I&F) defines
;--------------------------------------------
USR_MODE EQU 0x10
FIQ_MODE EQU 0x11
IRQ_MODE EQU 0x12
SVC_MODE EQU 0x13
ABT_MODE EQU 0x17
UDF_MODE EQU 0x1B
SYS_MODE EQU 0x1F
I_BIT EQU 0x80
F_BIT EQU 0x40
;----------------------------
; System / User Stack Memory
;----------------------------
IF :DEF:N9H20K1
RAM_Limit EQU 0x200000 ; For unexpanded hardware board
ENDIF
IF :DEF:N9H20K3
RAM_Limit EQU 0x800000 ; For unexpanded hardware board
ENDIF
IF :DEF:N9H20K5
RAM_Limit EQU 0x2000000 ; For unexpanded hardware board
ENDIF
UND_Stack EQU RAM_Limit
Abort_Stack EQU RAM_Limit-256
IRQ_Stack EQU RAM_Limit-512 ; followed by IRQ stack
FIQ_Stack EQU RAM_Limit-768 ; followed by IRQ stack
SVC_Stack EQU RAM_Limit-1024 ; SVC stack at top of memory
USR_Stack EQU RAM_Limit
ENTRY
EXPORT Reset_Go
EXPORT Vector_Table
Vector_Table
B Reset_Go ; Modified to be relative jumb for external boot
LDR PC, Undefined_Addr
LDR PC, SWI_Addr
LDR PC, Prefetch_Addr
LDR PC, Abort_Addr
DCD 0x0
LDR PC, IRQ_Addr
LDR PC, FIQ_Addr
Reset_Addr DCD Reset_Go
Undefined_Addr DCD Undefined_Handler
SWI_Addr DCD SWI_Handler1
Prefetch_Addr DCD Prefetch_Handler
Abort_Addr DCD Abort_Handler
DCD 0
IRQ_Addr DCD IRQ_Handler
FIQ_Addr DCD FIQ_Handler
; ************************
; Exception Handlers
; ************************
; The following dummy handlers do not do anything useful in this example.
; They are set up here for completeness.
Undefined_Handler
B Undefined_Handler
SWI_Handler1
B SWI_Handler1
Prefetch_Handler
B Prefetch_Handler
Abort_Handler
B Abort_Handler
IRQ_Handler
B IRQ_Handler
FIQ_Handler
B FIQ_Handler
Reset_Go
;--------------------------------
; Initial Stack Pointer register
;--------------------------------
;INIT_STACK
MSR CPSR_c, #UDF_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =UND_Stack
MSR CPSR_c, #ABT_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =Abort_Stack
MSR CPSR_c, #IRQ_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =IRQ_Stack
MSR CPSR_c, #FIQ_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =FIQ_Stack
MSR CPSR_c, #SYS_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =USR_Stack
MSR CPSR_c, #SVC_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =SVC_Stack
;------------------------------------------------------
; Set the normal exception vector of CP15 control bit
;------------------------------------------------------
MRC p15, 0, r0 , c1, c0 ; r0 := cp15 register 1
BIC r0, r0, #0x2000 ; Clear bit13 in r1
MCR p15, 0, r0 , c1, c0 ; cp15 register 1 := r0
IF :DEF:SYS_INIT
;-----------------------------
; system initialization
;------------------------------
;LDR r0, =0xFFF00004
ldr r0, =0xFFF00004
ldr r1, =0x00000540
str r1, [r0]
ldr r0, =0xFFF0000C
ldr r1, =0x00004F47 ; 240MHz: 4F47, 192MHz: 3F47
str r1, [r0]
ldr r0, =0XFFF00010
ldr r1, =0x001FFFFF
str r1, [r0]
ldr r0, =0xFFF00014
ldr r1, =0x104514BB
str r1, [r0]
ldr r0, =0xFFF00020
ldr r1, =0x00000009
str r1, [r0]
ldr r0, =0xFFF00030
ldr r1, =0x00000000
str r1, [r0]
ldr r0, =0XFFF00034
ldr r1, =0x00000000
str r1, [r0]
ldr r0, =0xFFF00038
ldr r1, =0x000001AB
str r1, [r0]
ldr r0, =0xFFF0003C
ldr r1, =0x00000050 ;CPU:AHP:APB 1:2:4 0x50, CPU:AHB:APB 1:1:2 0x41
str r1, [r0]
ldr r0, =0xFFF00040
ldr r1, =0x60000000
str r1, [r0]
ldr r0, =0xFFF01000
ldr r1, =0x00154201
str r1, [r0]
ldr r0, =0xFFF01004
ldr r1, =0x4006FFF6
str r1, [r0]
ldr r0, =0xFFF01010
ldr r1, =0x000090CD ;16M: 90CC, 32M: 90CD
str r1, [r0]
ldr r0, =0xFFF01018
ldr r1, =0x0000015B
str r1, [r0]
ldr r0, =0xFFF01020
ldr r1, =0x80007FFD
str r1, [r0]
ldr r0, =0xFFF01028
ldr r1, =0x00000027
str r1, [r0]
ldr r0, =0xFFF0001C
ldr r1, =0x00000080
str r1, [r0]
ENDIF
IMPORT __main
;-----------------------------
; enter the C code
;-----------------------------
B __main
END
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