?? startup.s
字號:
LDR R4, =WAITRD1 ;/* 配置EMCStaticWaitRd1 */
LDR R5, =WAITPAGE1 ;/* 配置EMCStaticWaitPage1 */
LDR R6, =WAITWR1 ;/* 配置EMCStaticWaitWr1 */
LDR R7, =WAITTURN1 ;/* 配置EMCStaticWaitTurn1 */
LDR R0, =EMCStaticConfig1
STMIA R0!, {R1-R7}
LDR R1, =STATICCFG2 ;/* 配置EMCStaticConfig2 */
LDR R2, =WAITWEN2 ;/* 配置EMCStaticWaitWen2 */
LDR R3, =WAITOEN2 ;/* 配置EMCStaticWaitOen2 */
LDR R4, =WAITRD2 ;/* 配置EMCStaticWaitRd2 */
LDR R5, =WAITPAGE2 ;/* 配置EMCStaticWaitPage2 */
LDR R6, =WAITWR2 ;/* 配置EMCStaticWaitWr2 */
LDR R7, =WAITTURN2 ;/* 配置EMCStaticWaitTurn2 */
LDR R0, =EMCStaticConfig2
STMIA R0!, {R1-R7}
LDR R1, =STATICCFG3 ;/* 配置EMCStaticConfig3 */
LDR R2, =WAITWEN3 ;/* 配置EMCStaticWaitWen3 */
LDR R3, =WAITOEN3 ;/* 配置EMCStaticWaitOen3 */
LDR R4, =WAITRD3 ;/* 配置EMCStaticWaitRd3 */
LDR R5, =WAITPAGE3 ;/* 配置EMCStaticWaitPage3 */
LDR R6, =WAITWR3 ;/* 配置EMCStaticWaitWr3 */
LDR R7, =WAITTURN3 ;/* 配置EMCStaticWaitTurn3 */
LDR R0, =EMCStaticConfig3
STMIA R0!, {R1-R7}
BL InitStack ;/* 初始化堆棧 */
BL TargetResetInit ;/* 目標板基本初始化 */
B __main ;/* 跳轉到c語言入口 */
;/********************************************************************************************************
;** Function name: __user_initial_stackheap
;**
;** Descriptions: 庫函數初始化堆和棧，不能刪除
;**
;** input parameters: 參考庫函數手冊
;** Returned value: 參考庫函數手冊
;**
;** Created by: Chenmingji
;** Created Date: 2004/02/02
;**-------------------------------------------------------------------------------------------------------
;** Modified by: LinEnqiang
;** Modified date: 2008-01-15
;**-------------------------------------------------------------------------------------------------------
;********************************************************************************************************/
__user_initial_stackheap
LDR R0, =bottom_of_heap
;LDR R1, =StackUsr
LDR R2, =top_of_heap
LDR R3, =bottom_of_Stacks
MOV PC, LR
EXPORT _sys_exit
_sys_exit
B .
EXPORT __rt_div0
EXPORT fputc
EXPORT fgetc
EXPORT _sys_close
EXPORT _sys_write
EXPORT _sys_read
EXPORT _sys_istty
EXPORT _sys_seek
EXPORT _sys_ensure
EXPORT _sys_flen
EXPORT _sys_tmpnam
EXPORT _sys_command_string
__rt_div0
fputc
fgetc
_sys_close
_sys_write
_sys_read
_sys_istty
_sys_seek
_sys_ensure
_sys_flen
_sys_tmpnam
_sys_command_string
NOP
MOV R0, #0
MOV PC, LR
;/********************************************************************************************************
;** Function name: CrpData
;**
;** Descriptions: 加密芯片
;**
;** input parameters: NONE
;** Returned value: NONE
;**
;** Created by: Chenmingji
;** Created Date: 2004/03/27
;**-------------------------------------------------------------------------------------------------------
;** Modified by:
;** Modified date:
;**-------------------------------------------------------------------------------------------------------
;********************************************************************************************************/
IF :DEF: EN_CRP
IF . >= 0x1fc
INFO 1,"\nThe data at 0x000001fc must be 0x87654321.\nPlease delete some source before this line."
ENDIF
CrpData
WHILE . < 0x1fc
NOP
WEND
CrpData1
DCD 0x87654321 ;/* 當此數為0x87654321時，用戶 */
;/* 程序被保護 */
ENDIF
;/********************************************************************************************************
;** Function name: InitStack
;**
;** Descriptions: 初始化堆棧
;**
;** input parameters: None
;** Returned value: None
;**
;** Created by: Chenmingji
;** Created Date: 2004/02/02
;**-------------------------------------------------------------------------------------------------------
;** Modified by: LinEnqiang
;** Modified date: 2008-01-15
;**-------------------------------------------------------------------------------------------------------
;********************************************************************************************************/
InitStack
MOV R0, LR
;Build the SVC stack
;設置管理模式堆棧
MSR CPSR_c, #0xd3
LDR SP, StackSvc
;Build the IRQ stack
;設置中斷模式堆棧
MSR CPSR_c, #0xd2
LDR SP, StackIrq
;Build the FIQ stack
;設置快速中斷模式堆棧
MSR CPSR_c, #0xd1
LDR SP, StackFiq
;Build the DATAABORT stack
;設置中止模式堆棧
MSR CPSR_c, #0xd7
LDR SP, StackAbt
;Build the UDF stack
;設置未定義模式堆棧
MSR CPSR_c, #0xdb
LDR SP, StackUnd
;Build the SYS stack
;設置系統模式堆棧
MSR CPSR_c, #0xdf
LDR SP, =StackUsr
MOV PC, R0
LTORG
StackSvc DCD SvcStackSpace + (SVC_STACK_LEGTH - 1) * 4
StackIrq DCD IrqStackSpace + (IRQ_STACK_LEGTH - 1) * 4
StackFiq DCD FiqStackSpace + (FIQ_STACK_LEGTH - 1) * 4
StackAbt DCD AbtStackSpace + (ABT_STACK_LEGTH - 1) * 4
StackUnd DCD UndtStackSpace + (UND_STACK_LEGTH - 1) * 4
AREA MyStacks, DATA, NOINIT, ALIGN = 2; ;/* 分配堆棧空間 */
SvcStackSpace SPACE SVC_STACK_LEGTH * 4 ;/* 管理模式堆?？臻g */
IrqStackSpace SPACE IRQ_STACK_LEGTH * 4 ;/* 中斷模式堆?？臻g */
FiqStackSpace SPACE FIQ_STACK_LEGTH * 4 ;/* 快速中斷模式堆?？臻g */
AbtStackSpace SPACE ABT_STACK_LEGTH * 4 ;/* 中止義模式堆?？臻g */
UndtStackSpace SPACE UND_STACK_LEGTH * 4 ;/* 未定義模式堆棧 */
AREA HeapBottom, DATA, NOINIT
bottom_of_heap SPACE 1
AREA StackBottom, DATA, NOINIT
bottom_of_Stacks SPACE 1
AREA HeapTop, DATA, NOINIT
top_of_heap
AREA StacksTop, DATA, NOINIT
StackUsr
END
;/********************************************************************************************************
;** End Of File
;********************************************************************************************************/
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