?? sysinit.s
字號:
INCLUDE option.inc
INCLUDE memcfg.inc
INCLUDE 2410addr.inc
INCLUDE vector.s
; AREA reset, CODE, READONLY
; EXPORT InitSystem
InitSystem
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]
;To reduce PLL lock time, adjust the LOCKTIME register.
ldr r0,=LOCKTIME
ldr r1,=0xffffff
str r1,[r0]
[ PLL_ON_START
;Configure MPLL
ldr r0,=MPLLCON
ldr r1,=((M_MDIV<<12)+(M_PDIV<<4)+M_SDIV) ;Fin=12MHz,Fout=50MHz
str r1,[r0]
]
ldr r0, =CLKCON
ldr r1, =0xffff0
str r1, [r0] ;使能所有功能單元塊時鐘,復(fù)位后缺省為全部使能
;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
adr r0, SMRDATA ;can not use ldr r0, =xxxx important!!!
ldr r1, =BWSCON ;BWSCON Address
add r2, r0, #52 ;End address of SMRDATA
0
ldr r3, [r0], #4
str r3, [r1], #4
cmp r2, r0
bne %B0
;ldr r0, =IrqSvcVector
;ldr r1, =IRQ_SERVICE
;str r1, [r0]
ldr r0, =BWSCON
ldr r0, [r0]
ands r0, r0, #6 ;OM[1:0] != 0, NOR FLash boot
bne InitSystem_exit ;do not read nand flash
adr r0, __ENTRY ;OM[1:0] == 0, NAND FLash boot
cmp r0, #0 ;if use Multi-ice,
bne InitSystem_exit ;do not read nand flash for boot
mov r5, #NFCONF
ldr r0, =(1<<15)|(1<<12)|(1<<11)|(7<<8)|(7<<4)|(7)
str r0, [r5]
bl ReadNandID
mov r6, #0
ldr r0, =0xec73
cmp r5, r0
beq %F1
ldr r0, =0xec75
cmp r5, r0
beq %F1
mov r6, #1
1
bl ReadNandStatus
mov r8, #0
ldr r9, =__ENTRY
2
ands r0, r8, #0x1f
bne %F3
mov r0, r8
bl CheckBadBlk
cmp r0, #0
addne r8, r8, #32
bne %F4
3
mov r0, r8
mov r1, r9
bl ReadNandPage
add r9, r9, #512
add r8, r8, #1
4
cmp r8, #256 ;128K
bcc %B2
mov r5, #NFCONF ;DsNandFlash
ldr r0, [r5]
and r0, r0, #~0x8000
str r0, [r5]
ldr pc, =InitSystem_exit
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
EXPORT IRQ_SERVICE
IRQ_SERVICE
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}
ReadNandID
mov r7,#NFCONF
ldr r0,[r7,#0] ;NFChipEn();
bic r0,r0,#0x800
str r0,[r7,#0]
mov r0,#0x90 ;WrNFCmd(RdIDCMD);
strb r0,[r7,#4]
mov r4,#0 ;WrNFAddr(0);
strb r4,[r7,#8]
1 ;while(NFIsBusy());
ldr r0,[r7,#0x10]
tst r0,#1
beq %B1
ldrb r0,[r7,#0xc] ;id = RdNFDat()<<8;
mov r0,r0,lsl #8
ldrb r1,[r7,#0xc] ;id |= RdNFDat();
orr r5,r1,r0
ldr r0,[r7,#0] ;NFChipDs();
orr r0,r0,#0x800
str r0,[r7,#0]
mov pc,lr
ReadNandStatus
mov r7,#NFCONF
ldr r0,[r7,#0] ;NFChipEn();
bic r0,r0,#0x800
str r0,[r7,#0]
mov r0,#0x70 ;WrNFCmd(QUERYCMD);
strb r0,[r7,#4]
ldrb r1,[r7,#0xc] ;r1 = RdNFDat();
ldr r0,[r7,#0] ;NFChipDs();
orr r0,r0,#0x800
str r0,[r7,#0]
mov pc,lr
WaitNandBusy
mov r0,#0x70 ;WrNFCmd(QUERYCMD);
mov r1,#NFCONF
strb r0,[r1,#4]
1 ;while(!(RdNFDat()&0x40));
ldrb r0,[r1,#0xc]
tst r0,#0x40
beq %B1
mov r0,#0 ;WrNFCmd(READCMD0);
strb r0,[r1,#4]
mov pc,lr
CheckBadBlk
mov r7, lr
mov r5, #NFCONF
bic r0, r0, #0x1f ;addr &= ~0x1f;
ldr r1,[r5,#0] ;NFChipEn()
bic r1,r1,#0x800
str r1,[r5,#0]
mov r1,#0x50 ;WrNFCmd(READCMD2)
strb r1,[r5,#4]
mov r1, #5
strb r1,[r5,#8] ;WrNFAddr(5)
strb r0,[r5,#8] ;WrNFAddr(addr)
mov r1,r0,lsr #8 ;WrNFAddr(addr>>8)
strb r1,[r5,#8]
cmp r6,#0 ;if(NandAddr)
movne r0,r0,lsr #16 ;WrNFAddr(addr>>16)
strneb r0,[r5,#8]
bl WaitNandBusy ;WaitNFBusy()
ldrb r0, [r5,#0xc] ;RdNFDat()
sub r0, r0, #0xff
mov r1,#0 ;WrNFCmd(READCMD0)
strb r1,[r5,#4]
ldr r1,[r5,#0] ;NFChipDs()
orr r1,r1,#0x800
str r1,[r5,#0]
mov pc, r7
ReadNandPage
mov r7,lr
mov r4,r1
mov r5,#NFCONF
ldr r1,[r5,#0] ;NFChipEn()
bic r1,r1,#0x800
str r1,[r5,#0]
mov r1,#0 ;WrNFCmd(READCMD0)
strb r1,[r5,#4]
strb r1,[r5,#8] ;WrNFAddr(0)
strb r0,[r5,#8] ;WrNFAddr(addr)
mov r1,r0,lsr #8 ;WrNFAddr(addr>>8)
strb r1,[r5,#8]
cmp r6,#0 ;if(NandAddr)
movne r0,r0,lsr #16 ;WrNFAddr(addr>>16)
strneb r0,[r5,#8]
ldr r0,[r5,#0] ;InitEcc()
orr r0,r0,#0x1000
str r0,[r5,#0]
bl WaitNandBusy ;WaitNFBusy()
mov r0,#0 ;for(i=0; i<512; i++)
1
ldrb r1,[r5,#0xc] ;buf[i] = RdNFDat()
strb r1,[r4,r0]
add r0,r0,#1
bic r0,r0,#0x10000
cmp r0,#0x200
bcc %B1
ldr r0,[r5,#0] ;NFChipDs()
orr r0,r0,#0x800
str r0,[r5,#0]
mov pc,r7
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
LTORG
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_Tacs<<13)+(B7_Tcos<<11)+(B7_Tacc<<8)+(B7_Tcoh<<6)+(B7_Tah<<4)+(B7_Tacp<<2)+(B7_PMC)) ;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
;***********************************************
DRAM_END EQU 0x33ffc000
AREA RamData, DATA, READWRITE
^ (DRAM_END - 0x800)
UserStack # 256
SVCStack # 256
UndefStack # 256
AbortStack # 256
IRQStack # 256
FIQStack # 256
EXPORT UserStack
EXPORT SVCStack
EXPORT UndefStack
EXPORT AbortStack
EXPORT IRQStack
EXPORT FIQStack
MAP (DRAM_END - 0x100)
SysRstVector # 4
UdfInsVector # 4
SwiSvcVector # 4
InsAbtVector # 4
DatAbtVector # 4
ReservedVector # 4
IrqSvcVector # 4
FiqSvcVector # 4
EXPORT SysRstVector
EXPORT UdfInsVector
EXPORT SwiSvcVector
EXPORT InsAbtVector
EXPORT DatAbtVector
EXPORT ReservedVector
EXPORT IrqSvcVector
EXPORT FiqSvcVector
;Do not use the label 'IntVectorTable',
;The value of IntVectorTable is different with the address you think it may be.
;IntVectorTable
HandleEINT0 # 4
HandleEINT1 # 4
HandleEINT2 # 4
HandleEINT3 # 4
HandleEINT4_7 # 4
HandleEINT8_23 # 4
HandleRSV6 # 4
HandleBATFLT # 4
HandleTICK # 4
HandleWDT # 4
HandleTIMER0 # 4
HandleTIMER1 # 4
HandleTIMER2 # 4
HandleTIMER3 # 4
HandleTIMER4 # 4
HandleUART2 # 4
HandleLCD # 4
HandleDMA0 # 4
HandleDMA1 # 4
HandleDMA2 # 4
HandleDMA3 # 4
HandleMMC # 4
HandleSPI0 # 4
HandleUART1 # 4
HandleRSV24 # 4
HandleUSBD # 4
HandleUSBH # 4
HandleIIC # 4
HandleUART0 # 4
HandleSPI1 # 4
HandleRTC # 4
HandleADC # 4
MAP (DRAM_END - 0x20)
pIrqStart # 4
pIrqHandler # 4
pIrqFinish # 4
EXPORT pIrqStart
EXPORT pIrqHandler
EXPORT pIrqFinish
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