;/*****************************************************************************/
;/* S3C2440A.S: Startup file for Samsung S3C440A                              */
;/*****************************************************************************/
;/* <<< Use Configuration Wizard in Context Menu >>>                          */ 
;/*****************************************************************************/
;/* This file is part of the uVision/ARM development tools.                   */
;/* Copyright (c) 2005-2006 Keil Software. All rights reserved.               */
;/* This software may only be used under the terms of a valid, current,       */
;/* end user licence from KEIL for a compatible version of KEIL software      */
;/* development tools. Nothing else gives you the right to use this software. */
;/*****************************************************************************/


; *** Startup Code (executed after Reset) ***


; Standard definitions of Mode bits and Interrupt (I & F) flags in PSRs

Mode_USR        EQU     0x10
Mode_FIQ        EQU     0x11
Mode_IRQ        EQU     0x12
Mode_SVC        EQU     0x13
Mode_ABT        EQU     0x17
Mode_UND        EQU     0x1B
Mode_SYS        EQU     0x1F

I_Bit           EQU     0x80            ; when I bit is set, IRQ is disabled
F_Bit           EQU     0x40            ; when F bit is set, FIQ is disabled


;// <h> Stack Configuration (Stack Sizes in Bytes)
;//   <o0> Undefined Mode      <0x0-0xFFFFFFFF:8>
;//   <o1> Supervisor Mode     <0x0-0xFFFFFFFF:8>
;//   <o2> Abort Mode          <0x0-0xFFFFFFFF:8>
;//   <o3> Fast Interrupt Mode <0x0-0xFFFFFFFF:8>
;//   <o4> Interrupt Mode      <0x0-0xFFFFFFFF:8>
;//   <o5> User/System Mode    <0x0-0xFFFFFFFF:8>
;// </h>

UND_Stack_Size  EQU     0x00000000
SVC_Stack_Size  EQU     0x00000008
ABT_Stack_Size  EQU     0x00000000
FIQ_Stack_Size  EQU     0x00000000
IRQ_Stack_Size  EQU     0x00000080
USR_Stack_Size  EQU     0x00000400

Stack_Size      EQU     (UND_Stack_Size + SVC_Stack_Size + ABT_Stack_Size + \
                         FIQ_Stack_Size + IRQ_Stack_Size + USR_Stack_Size)

                AREA    STACK, NOINIT, READWRITE, ALIGN=3
Stack_Mem       SPACE   Stack_Size

Stack_Top       EQU     Stack_Mem + Stack_Size


;// <h> Heap Configuration
;//   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF>
;// </h>

Heap_Size       EQU     0x00000000

                AREA    HEAP, NOINIT, READWRITE, ALIGN=3
Heap_Mem        SPACE   Heap_Size




; Clock Management definitions
CLK_BASE        EQU     0x4C000000      ; Clock Base Address
LOCKTIME_OFS    EQU     0x00            ; LOCKTIME Offset
MPLLCON_OFS     EQU     0x04            ; MPLLCON Offset
UPLLCON_OFS     EQU     0X08            ; UPLLCON Offset
CLKCON_OFS      EQU     0x0C            ; CLKCON Offset
CLKSLOW_OFS     EQU     0x10            ; CLKSLOW Offset
CLKDIVN_OFS     EQU     0X14            ; CLDKIVN Offset
CAMDIVN_OFS     EQU     0X18            ; CAMDIVN Offset



;// <e> Clock Management
;//   <h> MPLL Settings
;//   <i> Mpll = (2* m * Fin) / (p * 2^s), 200MHz <Fclko < 600MHz
;//     <o1.12..19> MDIV: Main divider <0x1-0xF8>
;//                 <i> m = MDIV + 8
;//     <o1.4..9>   PDIV: Pre-divider  <0x1-0x3E>
;//                 <i> p = PDIV + 2
;//     <o1.0..1>   SDIV: Post Divider <0x0-0x03>
;//                 <i> s = SDIV 
;//   </h>
;//   <h> UPLL Settings
;//   <i> Upll = ( m * Fin) / (p * 2^s),Uclk must be 48MHZ to USB device 
;//     <o2.12..19> MDIV: Main divider <0x1-0xF8>
;//                 <i> m = MDIV + 8,if Fin=12MHZ MDIV could be 0x38   
;//     <o2.4..9>   PDIV: Pre-divider  <0x1-0x3E>
;//                 <i> p = PDIV + 2,if Fin=12MHZ PDIV could be 0x2
;//     <o2.0..1>   SDIV: Post Divider <0x0-0x03>
;//                 <i> s = SDIV ,if Fin=12MHZ SDIV could be 0x2
;//   </h>
;//   <h>LOCK TIME 
;//      <o5.0..15>  LTIME CNT: MPLL Lock Time Count  <0x0-0xFFFF>
;//      <o5.16..31>  LTIME CNT: UPLL Lock Time Count  <0x0-0xFFFF>
;//   </h>
;//   <h> Master Clock
;//   <i> PLL Clock:  FCLK = FMPLL
;//   <i> Slow Clock: FCLK = Fin / (2 * SLOW_VAL), SLOW_VAL > 0
;//   <i> Slow Clock: FCLK = Fin, SLOW_VAL = 0
;//     <o4.7>      UCLK_ON: UCLK ON
;//                 <i> 0: UCLK ON(UPLL is also turned on) 1: UCLK OFF (UPLL is also turned off) 	 
;//     <o4.5>      MPLL_OFF: Turn off PLL
;//                 <i> 0: Turn on PLL.After PLL stabilization time (minimum 300us), SLOW_BIT can be cleared to 0. 1: Turn off PLL. PLL is turned off only when SLOW_BIT is 1.
;//     <o4.4>      SLOW_BIT: Slow Clock
;//     <o4.0..2>   SLOW_VAL: Slow Clock divider    <0x0-0x7>
;//   </h>
;//   <h> CLOCK DIVIDER CONTROL
;//     <o6.3>      DIVN_UPLL: UCLK select register(UCLK must be 48MHz for USB) 	 
;//                  <i> 0: UCLK = UPLL clock 1: UCLK = UPLL clock / 2
;//     <o6.1..2>   HDIVN                         <0x0-0x3>   
;//                  <i> 00: HCLK = FCLK/1, 01 : HCLK = FCLK/2
;//                  <i> 10: HCLK = FCLK/4 when CAMDIVN[9] = 0, HCLK= FCLK/8 when CAMDIVN[9] = 1.
;//                  <i> 11: HCLK = FCLK/3 when CAMDIVN[8] = 0, HCLK = FCLK/6 when CAMDIVN[8] = 1.
;//     <o6.0>      PDIVN
;//                  <i> 0: PCLK has the clock same as the HCLK/1,1: PCLK has the clock same as the HCLK/2
;//    </h>
;//   <h>  CAMERA CLOCK DIVIDER CONTROL
;//     <o7.12>     DVS_EN 
;//                  <i> 0: DVS OFF ARM core will run normally with FCLK (MPLLout).
;//                  <i> 1: DVS ON  ARM core will run at the same clock as system clock (HCLK).
;//     <o7.9>      HCLK4_HALF : HDIVN division rate change bit 
;//                  <i> HDIVN division rate change bit, when CLKDIVN[2:1]=10b.                    
;//                  <i> 0: HCLK = FCLK/4, 1: HCLK = FCLK/8
;//     <o7.8>      HCLK3_HALF : HDIVN division rate change bit 
;//                  <i> HDIVN division rate change bit, when CLKDIVN[2:1]=11b.                    
;//                  <i> 0: HCLK = FCLK/3, 1: HCLK = FCLK/6
;//     <o7.4>      CAMCLK_SEL
;//                  <i> 0: Use CAMCLK with UPLL output (CAMCLK=UPLL output).
;//                  <i> 1: CAMCLK is divided by CAMCLK_DIV value.
;//     <o7.0..3>   CAMCLK_DIV : CAMCLK divide factor setting                    <0x0-0x0F>
;//                  <i> Camera clock = UPLL / [(CAMCLK_DIV +1)x2].
;//                  <i>  This bit is valid when CAMCLK_SEL=1.
;//    </h>
;//  <h> Clock Generation
;//     <o3.20>     AC97         <0=> Disable  <1=> Enable
;//     <o3.19>     Camera       <0=> Disable  <1=> Enable
;//     <o3.18>     SPI          <0=> Disable  <1=> Enable
;//     <o3.17>     IIS          <0=> Disable  <1=> Enable
;//     <o3.16>     IIC          <0=> Disable  <1=> Enable
;//     <o3.15>     ADC          <0=> Disable  <1=> Enable
;//     <o3.14>     RTC          <0=> Disable  <1=> Enable
;//     <o3.13>     GPIO         <0=> Disable  <1=> Enable
;//     <o3.12>     UART2        <0=> Disable  <1=> Enable
;//     <o3.11>     UART1        <0=> Disable  <1=> Enable
;//     <o3.10>     UART0        <0=> Disable  <1=> Enable
;//     <o3.9>      SDI          <0=> Disable  <1=> Enable
;//     <o3.8>      PWMTIMER     <0=> Disable  <1=> Enable
;//     <o3.7>      USB device   <0=> Disable  <1=> Enable
;//     <o3.6>      USB host     <0=> Disable  <1=> Enable
;//     <o3.5>      LCDC         <0=> Disable  <1=> Enable
;//     <o3.4>      NAND FLASH Controller       <0=> Disable  <1=> Enable
;//     <o3.3>      SLEEP        <0=> Disable  <1=> Enable
;//     <o3.2>      IDLE BIT     <0=> Disable  <1=> Enable
;//   </h>
;// </e>
CLOCK_SETUP     EQU     1
LOCKTIME_Val    EQU     0x0FFF0FFF
MPLLCON_Val     EQU     0x00043011
UPLLCON_Val     EQU     0x00038021
CLKCON_Val      EQU     0x001FFFF0
CLKSLOW_Val     EQU     0x00000004
CLKDIVN_Val     EQU     0x0000000F
CAMDIVN_Val     EQU     0x00000000

;Interrupt  definitions
INTOFFSET          EQU    0X4A000014                      ;Address of Interrupt offset Register

;//<e> Interrupt Vector Table
;//  <o1.0..31> Interrupt Vector address     <0x20-0x3fffff78>
;//            <i> You could define Interuupt Vctor Table address.  
;//            <i> The Interrupt Vector Table address must be word aligned adress. 
;//</e>  
IntVT_SETUP      EQU     1
IntVTAddress    EQU     0x33ffff20


;----------------------- Memory Definitions ------------------------------------

; Internal Memory Base Addresses
IRAM_BASE       EQU     0x40000000

; Watchdog Timer definitions
WT_BASE         EQU     0x53000000      ; WT Base Address
WTCON_OFS       EQU     0x00            ; WTCON Offset
WTDAT_OFS       EQU     0x04            ; WTDAT Offset
WTCNT_OFS       EQU     0x08            ; WTCNT Offset

;// <e> Watchdog Timer
;//   <o1.5>      Watchdog Timer Enable/Disable
;//   <o1.0>      Reset Enable/Disable
;//   <o1.2>      Interrupt Enable/Disable
;//   <o1.3..4>   Clock Select  
;//               <0=> 1/16  <1=> 1/32  <2=> 1/64  <3=> 1/128
;//               <i> Clock Division Factor
;//   <o1.8..15>  Prescaler Value <0x0-0xFF>
;//   <o2.0..15>  Time-out Value  <0x0-0xFFFF>
;// </e>
WT_SETUP        EQU     1
WTCON_Val       EQU     0x00000000
WTDAT_Val       EQU     0x00008000

; Memory Controller definitions
MC_BASE         EQU     0x48000000      ; Memory Controller Base Address

;// <e> Memory Controller
MC_SETUP        EQU     0

;//   <h> Bank 0
;//     <o0.0..1>   PMC: Page Mode Configuration
;//                 <0=> 1 Data  <1=> 4 Data  <2=> 8 Data  <3=> 16 Data
;//     <o0.2..3>   Tpac: Page Mode Access Cycle
;//                 <0=> 2 clks  <1=> 3 clks  <2=> 4 clks  <3=> 6 clks
;//     <o0.4..5>   Tcah: Address Holding Time after nGCSn
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o0.6..7>   Toch: Chip Select Hold on nOE
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o0.8..10>  Tacc: Access Cycle
;//                 <0=> 1 clk   <1=> 2 clks  <2=> 3 clks  <3=> 4 clks
;//                 <4=> 6 clk   <5=> 8 clks  <6=> 10 clks <7=> 14 clks
;//     <o0.11..12> Tcos: Chip Select Set-up nOE
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o0.13..14> Tacs: Address Set-up before nGCSn
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//   </h>
;//
;//   <h> Bank 1
;//     <o8.4..5>   DW: Data Bus Width
;//                 <0=> 8-bit   <1=> 16-bit  <2=> 32-bit  <3=> Rsrvd
;//     <o8.6>      WS: WAIT Status
;//                 <0=> WAIT Disable
;//                 <1=> WAIT Enable
;//     <o8.7>      ST: SRAM Type
;//                 <0=> Not using UB/LB
;//                 <1=> Using UB/LB
;//     <o1.0..1>   PMC: Page Mode Configuration
;//                 <0=> 1 Data  <1=> 4 Data  <2=> 8 Data  <3=> 16 Data
;//     <o1.2..3>   Tpac: Page Mode Access Cycle
;//                 <0=> 2 clks  <1=> 3 clks  <2=> 4 clks  <3=> 6 clks
;//     <o1.4..5>   Tcah: Address Holding Time after nGCSn
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o1.6..7>   Toch: Chip Select Hold on nOE
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o1.8..10>  Tacc: Access Cycle
;//                 <0=> 1 clk   <1=> 2 clks  <2=> 3 clks  <3=> 4 clks
;//                 <4=> 6 clk   <5=> 8 clks  <6=> 10 clks <7=> 14 clks
;//     <o1.11..12> Tcos: Chip Select Set-up nOE
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o1.13..14> Tacs: Address Set-up before nGCSn
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//   </h>
;//
;//   <h> Bank 2
;//     <o8.8..9>   DW: Data Bus Width
;//                 <0=> 8-bit   <1=> 16-bit  <2=> 32-bit  <3=> Rsrvd
;//     <o8.10>     WS: WAIT Status
;//                 <0=> WAIT Disable
;//                 <1=> WAIT Enable
;//     <o8.11>     ST: SRAM Type
;//                 <0=> Not using UB/LB
;//                 <1=> Using UB/LB
;//     <o2.0..1>   PMC: Page Mode Configuration
;//                 <0=> 1 Data  <1=> 4 Data  <2=> 8 Data  <3=> 16 Data
;//     <o2.2..3>   Tpac: Page Mode Access Cycle
;//                 <0=> 2 clks  <1=> 3 clks  <2=> 4 clks  <3=> 6 clks
;//     <o2.4..5>   Tcah: Address Holding Time after nGCSn
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o2.6..7>   Toch: Chip Select Hold on nOE
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o2.8..10>  Tacc: Access Cycle
;//                 <0=> 1 clk   <1=> 2 clks  <2=> 3 clks  <3=> 4 clks
;//                 <4=> 6 clk   <5=> 8 clks  <6=> 10 clks <7=> 14 clks
;//     <o2.11..12> Tcos: Chip Select Set-up nOE
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//     <o2.13..14> Tacs: Address Set-up before nGCSn
;//                 <0=> 0 clk   <1=> 1 clk   <2=> 2 clks  <3=> 4 clks
;//   </h>
;//
;//   <h> Bank 3
;//     <o8.12..13> DW: Data Bus Width
;//                 <0=> 8-bit   <1=> 16-bit  <2=> 32-bit  <3=> Rsrvd
;//     <o8.14>     WS: WAIT Status
;//                 <0=> WAIT Disable
;//                 <1=> WAIT Enable
;//     <o8.15>     ST: SRAM Type
;//                 <0=> Not using UB/LB
;//                 <1=> Using UB/LB
;//     <o3.0..1>   PMC: Page Mode Configuration