startup.s

44b0x ucos 原版官方移植程序S3C3410X-ucos-ii.zip

;; ******************************************************
;; * NAME    : K401INIT.S				*
;; * Date    : 24.06.2002				*
;; * Author  : Jin-kyu Jung				*
;; * E-mail  : [e-mail]			*
;; * Description:					*
;; *   C start up codes					*
;; *   Configure memory, Initialize ISR ,stacks		*
;; *   Initialize C-variables				*
;; *   Fill zeros into zero-initialized C-variables	*
;; ******************************************************

;****************************** OPTIONS ******************************

;*********************************************************************
;*	海捞胶 绢靛饭胶甫 汲沥茄促.				     *
;*********************************************************************
;_RAM_STARTADDRESS EQU   0xc000000
;_ISR_STARTADDRESS EQU   0xc7fff00    ;GCS6:64M DRAM/SDRAM

_RAM_STARTADDRESS	EQU	0x1000000
_CPU_ASICBASE		EQU	0x7ff0000
_ISR_STARTADDRESS	EQU	0x17fff00

;*********************************************************************
;*	滚胶 气阑 汲沥茄促.(16厚飘)				     *
;*********************************************************************
;BUSWIDTH; 8,16
                GBLA    BUSWIDTH
BUSWIDTH	SETA    16

;*********************************************************************
;*	皋葛府 鸥涝阑 汲沥茄促.					     *
;*********************************************************************
;We don't recommend SDRAM with KS32C41000.                                           
;"DRAM","SDRAM"
;                	GBLS    BDRAMTYPE
;BDRAMTYPE       	SETS    "SDRAM"

; 困狼 内靛甫 酒贰客 鞍捞 荐沥茄促.

; "DRAM","SDRAM"
                	GBLS    DRAMTYPE
DRAMTYPE		SETS    "SDRAM"


;*********************************************************************
;*	s3c3410x 俊绰 PLL 捞 绝栏骨肺 力芭茄促.			     *
;*********************************************************************
;This value has to be TRUE on ROM program.
;This value has to be FALSE in RAM program.

;                GBLL    PLLONSTART
;PLLONSTART      SETL    {TRUE}

;*********************************************************************
;*	s3c3410x 矫胶袍 汲沥包咯 饭瘤胶磐 汲沥 郴侩狼 沥狼	     *
;*********************************************************************
;;; SYSCFG Configuration
STALL_ON		EQU	(0x1)
CACHE_ON		EQU	(0x1<<1)
WRBUF_ON		EQU	(0x1<<2)

SFR_STARTADDRESS	EQU	(0x7ff<<4)
MEMORY0_EDO		EQU	(0x2<<18)
MEMORY0_SDRAM		EQU	(0x3<<18)
MEMORY1_EDO		EQU	(0x2<<20)
MEMORY1_SDRAM		EQU	(0x3<<20)

;;; Cache Mode Setting
SYSCFG_0KB 		EQU	(0x2<<15)
SYSCFG_2KB		EQU	(0x0<<15)
SYSCFG_4KB		EQU	(0x1<<15)

;;; Watch-Dog Timer Setting
WDT_DISABLE		EQU	(0xa5<<8)


;;; Memory Control Parameters
;;; If memory type of bank6 and bank7 is ROM/SRAM, 
;;;    memory control configuration of Bank0 - Bank7
;;;  31          21 20          10  9   8   7   6     4   3   2  1   0
;;; +--------------+--------------+---+-------+---------+---+------+---+
;;; | Next Pointer | Base Pointer | X | Tacp  |  Tacc   | SM| PMC  |DBW|
;;; +--------------+--------------+---+-------+---------+---+------+---+

;;; Bank6 - Bank7 Memory Type : 
;;;		MT0, MT1 in SYSCFG is 01(FP DRAM) or 10(EDO DRAM)
;;;  31          21 20          10  9   8   7   6     4   3   2  1   0
;;; +--------------+--------------+-------+---+---------+---+------+---+
;;; | Next Pointer | Base Pointer |  Trp  |Trc|   Tcas  |Tcp|  CAN |DBW|
;;; +--------------+--------------+-------+---+---------+---+------+---+

;;; Bank6 - Bank7 Memory Type : MT0, MT1 in SYSCFG is 11(SDRAM)
;;;  31          21 20          10  9   8   7   6     4   3   2  1   0
;;; +--------------+--------------+-------+---+-------------+------+---+
;;; | Next Pointer | Base Pointer |  Trp  |Trc|      X      |  CAN |DBW|
;;; +--------------+--------------+-------+---+-------------+------+---+

;;; Bank6 - Bank7 Memory Type : MT0, MT1 in SYSCFG is 11(SDRAM)
;;;  31            21 20          10  9   8   7   6       4 3 2 1 0
;;; +----+---------+----+--------------------------------+----+
;;; |Tcsr|   Tch   |REN |        Refresh Counter         |VSMW|
;;; +----+---------+----+--------------------------------+----+

;;; Next Pointer: ( End address of each bank + 1 ) / 0x10000
;;; Base Pointer: Start address of each bank / 0x10000
;;; Tacp: Number of the access cycles at page mode
;;; Tacc: Number of the access cycles
;;; SM: SRAM Memory Type		
;;;		0: Normal(ROM / Flash / x8 SRAM), 1: x16 SRAM
;;; PMC: page mode configuration	
;;;		00: Single, 01: 4 data, 10: 8 data, 11: 16 data
;;; DBW: Data bus width of each bank	
;;;		0: 8-bit, 1: 16-bit

;;; Trp: RAS pre-charge times
;;; Trc: RAS to CAS delay
;;; Tcas: CAS pulse width
;;; Tcp: CAS pre-charge times
;;; CAN: Column address numbers

;;; Tcsr: CAS set up time for CBR refresh
;;; Tch: CAS hold time
;;; REN: Refresh enable	      0: disable DRAM/SDRAM refresh/auto-refresh
;;;			      1: enable DRAM/SDRAM refresh/auto-refresh
;;; Refresh counter = (2^11 + 1 - (MCLK / 15.6ua))

DBW_8			EQU	0x0
DBW_16			EQU	0x1

PMC_SINGLE		EQU	(0x0<<1)
PMC_4_DATA		EQU	(0x1<<1)
PMC_8_DATA		EQU	(0x2<<1)
PMC_16_DATA		EQU	(0x3<<1)

SM_NO_16_SRAM		EQU	(0x0<<3)
SM_16_SRAM		EQU	(0x1<<3)

TACC_2			EQU	(0x1<<4)
TACC_3			EQU	(0x2<<4)
TACC_4			EQU	(0x3<<4)
TACC_5			EQU	(0x4<<4)
TACC_6			EQU	(0x5<<4)
TACC_7			EQU	(0x6<<4)
TACC_10			EQU	(0x7<<4)

TACP_5			EQU	(0x0<<7)
TACP_2			EQU	(0x1<<7)
TACP_3			EQU	(0x2<<7)
TACP_4			EQU	(0x3<<7)

CAN_8			EQU	(0x0<<1)
CAN_9			EQU	(0x1<<1)
CAN_10			EQU	(0x2<<1)
CAN_11			EQU	(0x3<<1)

TCP_1			EQU	(0x0<<3)
TCP_2			EQU	(0x1<<3)

TCAS_1			EQU	(0x0<<4)
TCAS_2			EQU	(0x1<<4)
TCAS_3			EQU	(0x2<<4)
TCAS_4			EQU	(0x3<<4)
TCAS_5			EQU	(0x4<<4)

TRC_1			EQU	(0x0<<7)
TRC_2			EQU	(0x1<<7)

TRP_1			EQU	(0x0<<8)
TRP_2			EQU	(0x1<<8)
TRP_3			EQU	(0x2<<8)
TRP_4			EQU	(0x3<<8)

VSMR_0			EQU	(0x0)
VSMR_1			EQU	(0x1)

REFRESH_OFF		EQU	(0x0<<12)
REFRESH_ON		EQU	(0x1<<12)

TCH_1			EQU	(0x0<<13)
TCH_2			EQU	(0x1<<13)
TCH_3			EQU	(0x2<<13)
TCH_4			EQU	(0x3<<13)
TCH_5			EQU	(0x4<<13)

TCSR_1			EQU	(0x0<<16)
TCSR_2			EQU	(0x1<<16)


;*********************************************************************
;*********************************************************************
;*********************************************************************
;*********************************************************************

;捞 何盒篮 盔贰 乐带 内靛俊辑 SFR 阑 define 茄 何盒牢单, 林籍贸府...

;GCS6 64M 16bit DRAM/SDRAM(0xc000000-0xc7fffff)
;APP   RAM=0xc000000~0xc7effff 
;41MON RAM:0xc7f0000-0xc7fffff
;STACK	  :0xc7ffa00		   

;Interrupt Control
;INTPND		EQU	0x01e00004
;INTMOD		EQU	0x01e00008
;INTMSK		EQU	0x01e0000c
;I_ISPR		EQU	0x01e00020
;I_CMST		EQU	0x01e0001c

;Watchdog timer
;WTCON		EQU	0x01d30000

;Clock Controller
;PLLCON		EQU	0x1d80000
;CLKCON		EQU	0x1d80004
	
;Memory Controller
;MRSR		EQU	0x01c80024
;DRAMCON	EQU	0x01c80028   


;*********************************************************************
;*		s3c3410x 狼 SFR 狼 绢靛饭胶 汲沥		     *
;*********************************************************************
;;; Define special function register for Boot Program of SMDK40100

; System Control
SYSCON			EQU	(_CPU_ASICBASE+0xd003)

; System Manager
SYSCFG			EQU	(_CPU_ASICBASE+0x1000)
MEMCON0			EQU	(_CPU_ASICBASE+0x2000)
MEMCON1			EQU	(_CPU_ASICBASE+0x2004)
MEMCON2			EQU	(_CPU_ASICBASE+0x2008)
MEMCON3			EQU	(_CPU_ASICBASE+0x200c)
MEMCON4			EQU	(_CPU_ASICBASE+0x2010)
MEMCON5			EQU	(_CPU_ASICBASE+0x2014)
MEMCON6			EQU	(_CPU_ASICBASE+0x2018)
MEMCON7			EQU	(_CPU_ASICBASE+0x201c)
REFCON			EQU	(_CPU_ASICBASE+0x2020)

;I/O Port
PCON0			EQU	(_CPU_ASICBASE+0xb010)
PCON1			EQU	(_CPU_ASICBASE+0xb012)
PCON2			EQU	(_CPU_ASICBASE+0xb014)
PCON3			EQU	(_CPU_ASICBASE+0xb016)
PCON4			EQU	(_CPU_ASICBASE+0xb018)
PCON5			EQU	(_CPU_ASICBASE+0xb01c)
PCON6			EQU	(_CPU_ASICBASE+0xb020)
PCON7			EQU	(_CPU_ASICBASE+0xb024)
PCON8			EQU	(_CPU_ASICBASE+0xb026)
PCON9			EQU	(_CPU_ASICBASE+0xb027)

PUR0			EQU	(_CPU_ASICBASE+0xb028)
PDR1			EQU	(_CPU_ASICBASE+0xb029)
PUR2			EQU	(_CPU_ASICBASE+0xb02a)
PUR3			EQU	(_CPU_ASICBASE+0xb02b)
PDR4			EQU	(_CPU_ASICBASE+0xb02c)
PUR5			EQU	(_CPU_ASICBASE+0xb02d)
PUR6			EQU	(_CPU_ASICBASE+0xb02e)
PUR7			EQU	(_CPU_ASICBASE+0xb02f)
PUR8			EQU	(_CPU_ASICBASE+0xb03c)

PDAT2			EQU	(_CPU_ASICBASE+0xb002)

;Interrupt Control
INTPND			EQU	(_CPU_ASICBASE+0xc004)
INTMOD			EQU	(_CPU_ASICBASE+0xc000)
INTMSK			EQU	(_CPU_ASICBASE+0xc008)

;Watchdog timer
BTCON			EQU	(_CPU_ASICBASE+0xa002)


;*********************************************************************
; Format of the Program Status Register
;
;;;  31  30  29   28         7   6   5   4   3   2   1   0
;;; +---+---+---+---+--ss--+---+---+---+---+---+---+---+---+
;;; | N | Z | C | V |      | I | F | T |     M4 ~ M0       |
;;; +---+---+---+---+--ss--+---+---+---+---+---+---+---+---+
;
;;; Processor Mode and Mask 
;;;
;;; Mode value [M4 ~ M0]
USERMODE		EQU	0x10
FIQMODE 		EQU	0x11
IRQMODE 		EQU	0x12
SVCMODE 		EQU	0x13
ABORTMODE		EQU	0x17
UNDEFMODE		EQU	0x1b
MODEMASK		EQU	0x1f
;;; Value: Prohibit any interrupt
NOINT			EQU	0xc0

;*********************************************************************
;* Thumb mode 甫 荤侩窍瘤 臼栏骨肺 林籍 贸府茄促.		     *
;*********************************************************************
;check if tasm.exe is used.

;	GBLL	THUMBCODE
;	[ {CONFIG} = 16	
;THUMBCODE SETL	{TRUE}
;	CODE32
;	|   
;THUMBCODE SETL	{FALSE}
;	]
;
;	[ THUMBCODE
;	CODE32   ;for start-up code for Thumb mode
;	]
;*********************************************************************

;*********************************************************************
;*	概农肺 沥狼						     *
;*********************************************************************
	MACRO
$HandlerLabel HANDLER $HandleLabel

$HandlerLabel
	sub	sp,sp,#4
	stmfd	sp!,{r0}
	ldr	r0,=$HandleLabel
	ldr	r0,[r0]
	str	r0,[sp,#4]
	ldmfd	sp!,{r0,pc}
	MEND

;*********************************************************************
;*********************************************************************
;*********************************************************************
;*********************************************************************
;*			内靛狼 矫累				     *
;*********************************************************************
;*********************************************************************
;*********************************************************************

	IMPORT	|Image$$RO$$Limit|	 ; End of ROM code 
					 ; (=start of ROM data)
	IMPORT	|Image$$RW$$Base|	 ; Base of RAM to initialise
	IMPORT	|Image$$ZI$$Base|	 ; Base and limit of area
	IMPORT	|Image$$ZI$$Limit|	 ; to zero initialise
        IMPORT  Main

	AREA	Init,CODE,READONLY

	ENTRY
;; ---------------------------------------------------------------------
;; Setup Exception Vectors
;; ---------------------------------------------------------------------
	b ResetHandler	  ;for debug
	b HandlerUndef	  ;handlerUndef
	b HandlerSWI	  ;SWI interrupt handler
	b HandlerPabort   ;handlerPAbort
	b HandlerDabort   ;handlerDAbort
	b .		  ;handlerReserved
	b HandlerIRQ
	b HandlerFIQ
	
;*********************************************************************
;*			Vectored Interrupt Table		     *
;*			41000 俊 措茄 牢磐反飘 汲沥烙.		     *
;*********************************************************************
; vectored interrupt table 阑 林籍贸府沁促.

;VECTOR_BRANCH
;	ldr pc,=HandlerEINT0		  ;H/W interrupt vector table