?? 2410init.s
字號:
stmfd sp!,{r0} ;PUSH the work register to stack(lr does't push because it return to original address)
ldr r0,=HandleDabort ;load the address of HandleXXX to r0
ldr r0,[r0] ;load the contents(service routine start address) of HandleXXX
str r0,[sp,#4] ;store the contents(ISR) of HandleXXX to stack
ldmfd sp!,{r0,pc} ;POP the work register and pc(jump to ISR)
HandlerPabort:
sub sp,sp,#4 ;decrement sp(to store jump address)
stmfd sp!,{r0} ;PUSH the work register to stack(lr does't push because it return to original address)
ldr r0,=HandlePabort ;load the address of HandleXXX to r0
ldr r0,[r0] ;load the contents(service routine start address) of HandleXXX
str r0,[sp,#4] ;store the contents(ISR) of HandleXXX to stack
ldmfd sp!,{r0,pc} ;POP the work register and pc(jump to ISR)
HandlerFIQ:
sub sp,sp,#4 ;decrement sp(to store jump address)
stmfd sp!,{r0} ;PUSH the work register to stack(lr does't push because it return to original address)
ldr r0,=HandleFIQ ;load the address of HandleXXX to r0
ldr r0,[r0] ;load the contents(service routine start address) of HandleXXX
str r0,[sp,#4] ;store the contents(ISR) of HandleXXX to stack
ldmfd sp!,{r0,pc} ;POP the work register and pc(jump to ISR)
IsrIRQ:
sub sp,sp,#4 ;reserved for PC
stmfd sp!,{r8-r9}
ldr r9,=INTOFFSET
ldr r9,[r9]
ldr r8,=HandleEINT0
add r8,r8,r9,lsl #2
ldr r8,[r8]
str r8,[sp,#8]
ldmfd sp!,{r8-r9,pc}
?cstartup
; Initialize System Registers.
ldr r0,=WTCON ;watch dog disable
ldr r1,=0x0
str r1,[r0]
ldr r0,=INTMSK
ldr r1,=0xffffffff ;all interrupt disable
str r1,[r0]
ldr r0,=INTSUBMSK
ldr r1,=0x3ff ;all sub interrupt disable
str r1,[r0]
ldr r0,=GPFCON
ldr r1,=0x5500
str r1,[r0]
ldr r0,=GPFDAT
ldr r1,=0x10
str r1,[r0]
;To reduce PLL lock time, adjust the LOCKTIME register.
ldr r0,=LOCKTIME
ldr r1,=0xffffff
str r1,[r0]
;Configure MPLL
ldr r0,=MPLLCON
ldr r1,=0x0
str r1,[r0]
;Check if the boot is caused by the wake-up from POWER_OFF mode.
ldr r1,=GSTATUS2
ldr r0,[r1]
tst r0,#0x2
;In case of the wake-up from POWER_OFF mode, go to POWER_OFF_WAKEUP handler.
bne WAKEUP_POWER_OFF
EXPORT StartPointAfterPowerOffWakeUp
StartPointAfterPowerOffWakeUp
ldr r0,=SMRDATA
ldr r1,=BWSCON ;BWSCON Address
add r2, r0, #52 ;End address of SMRDATA
SMRDATA_SET:
ldr r3, [r0], #4
str r3, [r1], #4
cmp r2, r0
bne SMRDATA_SET
// bl InitStacks
InitStacks
mrs r0,cpsr
bic r0,r0,#MODEMASK
orr r1,r0,#UNDEFMODE|NOINT
msr cpsr_cxsf,r1 ;UndefMode
ldr sp,=UndefStack
orr r1,r0,#ABORTMODE|NOINT
msr cpsr_cxsf,r1 ;AbortMode
ldr sp,=AbortStack
orr r1,r0,#IRQMODE|NOINT
msr cpsr_cxsf,r1 ;IRQMode
ldr sp,=IRQStack
orr r1,r0,#FIQMODE|NOINT
msr cpsr_cxsf,r1 ;FIQMode
ldr sp,=FIQStack
bic r0,r0,#MODEMASK|NOINT
orr r1,r0,#SVCMODE
msr cpsr_cxsf,r1 ;SVCMode
ldr sp,=SVCStack
;USER mode has not be initialized.
// mov pc,lr
;The LR register won't be valid if the current mode is not SVC mode.
; Setup IRQ handler
ldr r0,=HandleIRQ ;This routine is needed
ldr r1,=IsrIRQ ;if there isn't 'subs pc,lr,#4' at 0x18, 0x1c
str r1,[r0]
/*
//酒貳客 鞍撈 RAM COPY風垺撈 樂綽單, 撈巴闌 葷儈竅瘤 臼酒檔 悼累俊綽 撈惑撈 絕促.
//Copy and paste RW data/zero initialized data
ldr r0, =SFE(DATA_ID) // Get pointer to ROM data
ldr r1, =SFB(DATA_I) // and RAM copy
ldr r3, =SFE(DATA_I)
//Zero init base => top of initialised data
cmp r0, r1 // Check that they are different
beq __xx07
__xx06
cmp r1, r3 // Copy init data
ldrcc r2, [r0], #4 //--> LDRCC r2, [r0] + ADD r0, r0, #4
strcc r2, [r1], #4 //--> STRCC r2, [r1] + ADD r1, r1, #4
bcc __xx06
__xx07
ldr r1, =SFE(DATA_Z) // Top of zero init segment
mov r2, #0
__xx08
cmp r3, r1 // Zero init
strcc r2, [r3], #4
bcc __xx08
*/
#ifdef __ARMVFP__
; Enable the VFP coprocessor.
mov r0, #0x30000000 ; Set EN bit in VFP
fmxr fpexc, r0 ; FPEXC, clear others.
; Disable underflow exceptions by setting flush to zero mode.
; For full IEEE 754 underflow compliance this code should be removed
; and the appropriate exception handler installed.
mov r0, #0x01000000 ; Set FZ bit in VFP
fmxr fpscr, r0 ; FPSCR, clear others.
#endif
; Add more initialization here
; Continue to Main for more IAR specific system startup
ldr r0,=?main
// ldr r0,=Main
bx r0
SMRDATA DATA
; Memory configuration should be optimized for best performance
; The following parameter is not optimized.
; Memory access cycle parameter strategy
; 1) The memory settings is safe parameters even at HCLK=75Mhz.
; 2) SDRAM refresh period is for HCLK=75Mhz.
DCD (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))
DCD ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC)) ;GCS0
DCD ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC)) ;GCS1
DCD ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC)) ;GCS2
DCD ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC)) ;GCS3
DCD ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC)) ;GCS4
DCD ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC)) ;GCS5
DCD ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN)) ;GCS6
DCD ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN)) ;GCS7
DCD ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
DCD 0x32 ;SCLK power saving mode, BANKSIZE 128M/128M
DCD 0x30 ;MRSR6 CL=3clk
DCD 0x30 ;MRSR7
; DCD 0x20 ;MRSR6 CL=2clk
; DCD 0x20 ;MRSR7
; ALIGNROM 5
; ALIGNROM 3
LTORG
ASEGN __ISR_AREA, _ISR_STARTADDRESS
_isr_init:
HandleReset DS32 1
HandleUndef DS32 1
HandleSWI DS32 1
HandlePabort DS32 1
HandleDabort DS32 1
HandleReserved DS32 1
HandleIRQ DS32 1
HandleFIQ DS32 1
;Don't use the label 'IntVectorTable',
;The value of IntVectorTable is different with the address you think it may be.
;IntVectorTable
HandleEINT0 DS32 1
HandleEINT1 DS32 1
HandleEINT2 DS32 1
HandleEINT3 DS32 1
HandleEINT4_7 DS32 1
HandleEINT8_23 DS32 1
HandleRSV6 DS32 1
HandleBATFLT DS32 1
HandleTICK DS32 1
HandleWDT DS32 1
HandleTIMER0 DS32 1
HandleTIMER1 DS32 1
HandleTIMER2 DS32 1
HandleTIMER3 DS32 1
HandleTIMER4 DS32 1
HandleUART2 DS32 1
HandleLCD DS32 1
HandleDMA0 DS32 1
HandleDMA1 DS32 1
HandleDMA2 DS32 1
HandleDMA3 DS32 1
HandleMMC DS32 1
HandleSPI0 DS32 1
HandleUART1 DS32 1
HandleRSV24 DS32 1
HandleUSBD DS32 1
HandleUSBH DS32 1
HandleIIC DS32 1
HandleUART0 DS32 1
HandleSPI1 DS32 1
HandleRTC DS32 1
HandleADC DS32 1
LTORG
END
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -