s3c2410的bootloader(vivi)源代码分析 嵌入式(arm) 思独.mht

对s3c2410的Bootloader源代码进行了详细的分析

New Roman">32</FONT>=CE=BB=B1=E4=B3=C9<FONT face=3D"Times New =
Roman">16</FONT>=CE=BB=A3=AC=BF=C9=C4=DC=D0=E8=D2=AA=D0=DE=B8=C4<FONT =
face=3D"Times New Roman">vBANKCON6</FONT>=B5=C4=D6=B5<FONT face=3D"Times =
New Roman"> ******/</FONT></P><P><FONT face=3D"Times New Roman">.long    =
   vBANKCON7</FONT></P><P><FONT face=3D"Times New Roman">.long       =
vREFRESH</FONT></P><P><FONT face=3D"Times New Roman">.long       =
vBANKSIZE</FONT></P><P><FONT face=3D"Times New Roman">/****** =
SDRAM</FONT>=B4=D3<FONT face=3D"Times New =
Roman">64MB</FONT>=B1=E4=B3=C9<FONT face=3D"Times New =
Roman">32MB</FONT>=A3=AC=D0=E8=D2=AA=D0=DE=B8=C4<FONT face=3D"Times New =
Roman">vBANKSIZE</FONT>=B5=C4=D6=B5<FONT face=3D"Times New Roman"> =
******/</FONT></P><P><FONT face=3D"Times New Roman"> .long       =
vMRSRB6</FONT></P><P><FONT face=3D"Times New Roman"> .long       =
vMRSRB7</FONT></P><P><FONT face=3D"Times New =
Roman">********************/</FONT></P><P><FONT face=3D"Times New =
Roman">add r3, r1, #52</FONT></P><P><FONT face=3D"Times New Roman">1:    =
ldr   r4, [r2], #4</FONT></P><P><FONT face=3D"Times New Roman">str   r4, =
[r1], #4</FONT></P><P><FONT face=3D"Times New Roman">cmp r1, =
r3</FONT></P><P><FONT face=3D"Times New Roman">bne  1b                   =
                   =
</FONT>=A3=BB=D1=AD=BB=B7=B2=D9=D7=F7=A3=AC=D6=B1=B5=BD<FONT =
face=3D"Times New =
Roman">13</FONT>=B8=F6=BC=C4=B4=E6=C6=F7=B8=B3=D6=B5=CD=EA=B3=C9</P><P><F=
ONT face=3D"Times New Roman">mov pc, lr</FONT></P><P><FONT face=3D"Times =
New Roman"><FONT face=3D"Courier =
New">/</FONT>*******************************/</FONT></P><P><FONT =
face=3D"Times New Roman">#ifdef CONFIG_PM                        =
</FONT>=A3=BB<FONT face=3D"Times New =
Roman">vivi</FONT>=BF=BC=C2=C7=B2=BB=D0=E8=D2=AA=CA=B9=D3=C3=B5=E7=D4=B4=B9=
=DC=C0=ED</P><P><FONT face=3D"Times New Roman">@ Check if this is a =
wake-up from sleep</FONT></P><P><FONT face=3D"Times New Roman">ldr   r1, =
PMST_ADDR</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r0, =
[r1]</FONT></P><P><FONT face=3D"Times New Roman">tst    r0, =
#(PMST_SMR)</FONT></P><P><FONT face=3D"Times New Roman"> bne  =
WakeupStart                      =
</FONT>=A3=BB=B2=E9=BF=B4=D7=B4=CC=AC=A3=AC=C5=D0=B6=CF=CA=C7=B7=F1=D0=E8=
=D2=AA=CC=F8=D7=AA=B5=BD<FONT face=3D"Times New =
Roman">WakeupStart</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">#ifdef =
CONFIG_S<ST1:CHMETCNV tcsc=3D"0" numbertype=3D"1" negative=3D"False" =
hasspace=3D"False" sourcevalue=3D"3" unitname=3D"C" =
w:st=3D"on">3C</ST1:CHMETCNV>2410_SMDK                      =
</FONT>=A3=BB<FONT face=3D"Times New =
Roman">SMDK</FONT>=BF=AA=B7=A2=B0=E5=CA=B9=D3=C3</P><P><FONT =
face=3D"Times New Roman"> @ All LED on                                   =
             =
</FONT>=A3=BB=B5=E3=C1=C1=BF=AA=B7=A2=B0=E5=C9=CF=B5=C4<FONT =
face=3D"Times New Roman">LED</FONT></P><P><FONT face=3D"Times New =
Roman">mov r1, #GPIO_CTL_BASE</FONT></P><P><FONT face=3D"Times New =
Roman"> add r1, r1, #oGPIO_F                                   =
</FONT>=A3=BB<FONT face=3D"Times New Roman">LED</FONT>=CA=B9=D3=C3<FONT =
face=3D"Times New =
Roman">GPIOF</FONT>=D7=E9=B5=C4=B9=DC=BD=C5</P><P><FONT face=3D"Times =
New Roman">ldr   r2,=3D0x55aa                 =
</FONT>=A3=BB=CA=B9=C4=DC<FONT face=3D"Times New =
Roman">EINT0</FONT>=A3=AC<FONT face=3D"Times New =
Roman">EINT1</FONT>=A3=AC<FONT face=3D"Times New =
Roman">EINT2</FONT>=A3=AC<FONT face=3D"Times New =
Roman">EINT3</FONT>=A3=AC</P><P>=A3=BB=C1=ED=CB=C4=B8=F6=B9=DC=BD=C5=C5=E4=
=D6=C3=B3=C9=CA=E4=B3=F6=A3=AC=C6=C1=B1=CE<FONT face=3D"Times New =
Roman">EINT4</FONT>=A3=AC<FONT face=3D"Times New =
Roman">5</FONT>=A3=AC<FONT face=3D"Times New Roman">6</FONT>=A3=AC<FONT =
face=3D"Times New Roman">7</FONT></P><P><FONT face=3D"Times New Roman"> =
str   r2, [r1, #oGPIO_CON]</FONT></P><P><FONT face=3D"Times New Roman"> =
mov r2, #0xff</FONT></P><P><FONT face=3D"Times New Roman"> str   r2, =
[r1, #oGPIO_UP]         </FONT>=A3=BB<FONT face=3D"Times New =
Roman">disable the pull-up function</FONT></P><P><FONT face=3D"Times New =
Roman"> mov r2, #0x00</FONT></P><P><FONT face=3D"Times New Roman">str   =
r2, [r1, #oGPIO_DAT]</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">#if =
0</FONT></P><P><FONT face=3D"Times New Roman">@ SVC</FONT></P><P><FONT =
face=3D"Times New Roman"> mrs  r0, cpsr</FONT></P><P><FONT face=3D"Times =
New Roman"> bic   r0, r0, #0xdf</FONT></P><P><FONT face=3D"Times New =
Roman">orr   r1, r0, #0xd3</FONT></P><P><FONT face=3D"Times New =
Roman">msr  cpsr_all, r1</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">@ set GPIO for =
UART                                   =
</FONT>=A3=BB=C9=E8=D6=C3=B4=AE=BF=DA</P><P><FONT face=3D"Times New =
Roman"> mov r1, #GPIO_CTL_BASE</FONT></P><P><FONT face=3D"Times New =
Roman">add r1, r1, #oGPIO_H                                   =
</FONT>=A3=BB=C9=E8=D6=C3<FONT face=3D"Times New =
Roman">GPIO_H</FONT>=D7=E9=B9=DC=BD=C5=CE=AA=B4=AE=BF=DA</P><P><FONT =
face=3D"Times New Roman">ldr   r2, gpio_con_uart</FONT></P><P><FONT =
face=3D"Times New Roman">str   r2, [r1, #oGPIO_CON]</FONT></P><P><FONT =
face=3D"Times New Roman"> ldr   r2, gpio_up_uart</FONT></P><P><FONT =
face=3D"Times New Roman"> str   r2, [r1, #oGPIO_UP]</FONT></P><P><FONT =
face=3D"Times New Roman">/*************************</FONT></P><P><FONT =
face=3D"Times New Roman">@ inital values for GPIO</FONT></P><P><FONT =
face=3D"Times New Roman">gpio_con_uart:</FONT></P><P><FONT face=3D"Times =
New Roman">.long       vGPHCON   </FONT>=A3=BB<FONT face=3D"Times New =
Roman">vGPHCON</FONT>=D4=DA<FONT face=3D"Times New =
Roman">/vivi/include/platform/smdk2410.h</FONT>=D6=D0=B8=B3=D6=B5</P><P>=A3=
=BB<FONT face=3D"Times New Roman">#define vGPHCON               =
0x0016faaa</FONT></P><P>=A3=BB<FONT face=3D"Times New =
Roman">GPIO_H</FONT>=C5=E4=D6=C3=CE=AA<FONT face=3D"Times New =
Roman">nCTS0</FONT>=A3=AC<FONT face=3D"Times New Roman">nRTS0, =
RXD0,TXD0, RXD1</FONT>=A3=AC</P><P>=A3=BB<FONT face=3D"Times New =
Roman">TXD1</FONT>=A3=AC<FONT face=3D"Times New =
Roman">nCTS1</FONT>=A3=AC<FONT face=3D"Times New =
Roman">nRTS1,</FONT></P><P><FONT face=3D"Times New Roman">/****  =
</FONT>=C8=FD=B8=F6=B4=AE=BF=DA=B6=BC=CA=B9=C4=DC=A3=AC=BF=C9=C4=DC=D0=E8=
=D2=AA=D0=DE=B8=C4<FONT face=3D"Times New Roman">#define vGPHCON =
0x0016aaaa   ****/</FONT></P><P><FONT face=3D"Times New =
Roman">gpio_up_uart:</FONT></P><P><FONT face=3D"Times New Roman">.long   =
    Vgphup         </FONT>=A3=BB=CD=AC=C9=CF<FONT face=3D"Times New =
Roman">#define vGPHUP                  0x000007ff</FONT></P><P>=A3=BBThe =
pull-up function is disabled.</P><P><FONT face=3D"Times New =
Roman">************************/</FONT></P><P><FONT face=3D"Times New =
Roman"> bl    InitUART             </FONT>=A3=BB=CC=F8=D7=AA=B5=BD<FONT =
face=3D"Times New =
Roman">InitUART</FONT>=B4=AE=BF=DA=B3=F5=CA=BC=BB=AF=BA=AF=CA=FD</P><P><F=
ONT face=3D"Times New =
Roman">/****************************************************</FONT></P><P=
RE><P><FONT face=3D"Times New Roman">@ Initialize =
UART</FONT></P><P><FONT face=3D"Times New Roman">@</FONT></P><P><FONT =
face=3D"Times New Roman">@ r0 =3D number of UART port</FONT></P><P><FONT =
face=3D"Times New Roman">InitUART:</FONT></P><P><FONT face=3D"Times New =
Roman">ldr   r1, SerBase</FONT></P><P><FONT face=3D"Times New =
Roman">/*******************</FONT></P><P><FONT face=3D"Times New =
Roman">.align 4                               =
</FONT>=A3=BB=C8=B1=CA=A1=C7=E9=BF=F6=CF=C2=D4=DA<FONT face=3D"Times New =
Roman">vivi</FONT>=D6=D0=D6=BB=B3=F5=CA=BC=BB=AF=C1=CB<FONT =
face=3D"Times New Roman">UART0</FONT></P><P><FONT face=3D"Times New =
Roman">SerBase:</FONT></P><P><FONT face=3D"Times New Roman">#if =
defined(CONFIG_SERIAL_UART0)</FONT></P><P><FONT face=3D"Times New =
Roman"> .long UART0_CTL_BASE        =
</FONT>=A3=BB=BB=F9=B5=D8=D6=B7=D4=DA<FONT face=3D"Times New =
Roman">/vivi/include/s<ST1:CHMETCNV tcsc=3D"0" numbertype=3D"1" =
negative=3D"False" hasspace=3D"False" sourcevalue=3D"3" unitname=3D"C" =
w:st=3D"on">3c</ST1:CHMETCNV>2410.h</FONT>=D6=D0=B6=A8=D2=E5</P><P><FONT =
face=3D"Times New Roman">#elif =
defined(CONFIG_SERIAL_UART1)</FONT></P><P><FONT face=3D"Times New =
Roman">.long UART1_CTL_BASE</FONT></P><P><FONT face=3D"Times New =
Roman">#elif defined(CONFIG_SERIAL_UART2)</FONT></P><P><FONT =
face=3D"Times New Roman">.long UART2_CTL_BASE</FONT></P><P><FONT =
face=3D"Times New Roman">#else</FONT></P><P><FONT face=3D"Times New =
Roman">#error not defined base address of serial</FONT></P><P><FONT =
face=3D"Times New Roman">#endif</FONT></P><P><FONT face=3D"Times New =
Roman"><FONT face=3D"Courier =
New">/</FONT>********************/</FONT></P><P><FONT face=3D"Times New =
Roman">mov r2, #0x0</FONT></P><P><FONT face=3D"Times New Roman"> str   =
r2, [r1, #oUFCON]</FONT></P><P><FONT face=3D"Times New Roman"> str   r2, =
[r1, #oUMCON]</FONT></P><P><FONT face=3D"Times New Roman"> mov r2, =
#0x3</FONT></P><P><FONT face=3D"Times New Roman">str   r2, [r1, =
#oULCON]</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r2, =
=3D0x245</FONT></P><P><FONT face=3D"Times New Roman">str   r2, [r1, =
#oUCON]</FONT></P><P><FONT face=3D"Times New Roman">#define UART_BRD =
((50000000 / (UART_BAUD_RATE * 16)) - 1)</FONT></P><P><FONT =
face=3D"Times New Roman">mov r2, #UART_BRD</FONT></P><P><FONT =
face=3D"Times New Roman">str   r2, [r1, #oUBRDIV]</FONT></P><P><FONT =
face=3D"Times New Roman"> mov r3, #100</FONT></P><P><FONT face=3D"Times =
New Roman">mov r2, #0x0</FONT></P><P><FONT face=3D"Times New Roman">1:   =
 sub  r3, r3, #0x1</FONT></P><P><FONT face=3D"Times New Roman"> tst    =
r2, r3</FONT></P><P><FONT face=3D"Times New Roman">bne  =
1b</FONT></P><P><FONT face=3D"Times New Roman">#if 0</FONT></P><P><FONT =
face=3D"Times New Roman">mov r2, #'U'</FONT></P><P><FONT face=3D"Times =
New Roman">str   r2, [r1, #oUTXHL]</FONT></P><P><FONT face=3D"Times New =
Roman">1:    ldr   r3, [r1, #oUTRSTAT]</FONT></P><P><FONT face=3D"Times =
New Roman">and  r3, r3, #UTRSTAT_TX_EMPTY</FONT></P><P><FONT =
face=3D"Times New Roman">tst    r3, #UTRSTAT_TX_EMPTY</FONT></P><P><FONT =
face=3D"Times New Roman">bne  1b</FONT></P><P><FONT face=3D"Times New =
Roman"> mov r2, #'0'</FONT></P><P><FONT face=3D"Times New Roman">str   =
r2, [r1, #oUTXHL]</FONT></P><P><FONT face=3D"Times New Roman">1:    ldr  =
 r3, [r1, #oUTRSTAT]</FONT></P><P><FONT face=3D"Times New Roman">and  =
r3, r3, #UTRSTAT_TX_EMPTY</FONT></P><P><FONT face=3D"Times New =
Roman">tst    r3, #UTRSTAT_TX_EMPTY</FONT></P><P><FONT face=3D"Times New =
Roman">bne  1b</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">mov pc, =
lr</FONT></P><P><FONT face=3D"Times New Roman"><FONT face=3D"Courier =
New">/</FONT>****************************************************/</FONT>=
</P><P><FONT face=3D"Times New Roman">#ifdef CONFIG_DEBUG_LL             =
           =
</FONT>=A3=BB=B4=F2=D3=A1=B5=F7=CA=D4=D0=C5=CF=A2=A3=AC=C8=B1=CA=A1=CE=B4=
=B6=A8=D2=E5</P><P><FONT face=3D"Times New Roman">@ Print current =
Program Counter</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r1, =
SerBase</FONT></P><P><FONT face=3D"Times New Roman"> mov r0, =
#'r'</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintChar</FONT></P><P><FONT face=3D"Times New Roman">mov r0, =
#'n'</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintChar</FONT></P><P><FONT face=3D"Times New Roman"> mov r0, =
#'@'</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintChar</FONT></P><P><FONT face=3D"Times New Roman">mov r0, =
pc</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintHexWord</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">#ifdef =
CONFIG_BOOTUP_MEMTEST</FONT></P><P><FONT face=3D"Times New Roman">@ =
simple memory test to find some DRAM flaults.</FONT></P><P><FONT =
face=3D"Times New Roman"> bl    memtest</FONT></P><P><FONT face=3D"Times =
New Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">#ifdef =
CONFIG_S<ST1:CHMETCNV tcsc=3D"0" numbertype=3D"1" negative=3D"False" =
hasspace=3D"False" sourcevalue=3D"3" unitname=3D"C" =
w:st=3D"on">3C</ST1:CHMETCNV>2410_NAND_BOOT         =
</FONT>=A3=BB=B4=D3<FONT face=3D"Times New Roman">NAND =
Flash</FONT>=C6=F4=B6=AF</P><P><FONT face=3D"Times New Roman">bl    =
copy_myself                              =
</FONT>=A3=BB=CC=F8=D7=AA=B5=BD<FONT face=3D"Times New =
Roman">copy_myself</FONT>=BA=AF=CA=FD</P><P><FONT face=3D"Times New =
Roman">/**********************************************</FONT></P><P><FONT=
 face=3D"Times New Roman">@</FONT></P><P><FONT face=3D"Times New =
Roman">@ copy_myself: copy vivi to ram</FONT></P><P><FONT face=3D"Times =
New Roman">@</FONT></P><P><FONT face=3D"Times New =
Roman">copy_myself:</FONT></P><P><FONT face=3D"Times New Roman"> mov =
r10, lr</FONT></P><P><FONT face=3D"Times New Roman">@ reset =
NAND</FONT></P><P><FONT face=3D"Times New Roman">mov r1, =
#NAND_CTL_BASE</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r2, =
=3D0xf830          @ initial value</FONT></P><P><FONT face=3D"Times New =
Roman">str   r2, [r1, #oNFCONF]</FONT></P><P><FONT face=3D"Times New =
Roman">ldr   r2, [r1, #oNFCONF]</FONT></P><P><FONT face=3D"Times New =
Roman">bic   r2, r2, #0x800             @ enable chip</FONT></P><P><FONT =
face=3D"Times New Roman">str   r2, [r1, #oNFCONF]</FONT></P><P><FONT =
face=3D"Times New Roman">mov r2, #0xff        @ RESET =
command</FONT></P><P><FONT face=3D"Times New Roman">strb r2, [r1, =
#oNFCMD]</FONT></P><P><FONT face=3D"Times New Roman">mov r3, #0          =
         @ wait</FONT></P><P><FONT face=3D"Times New Roman">1:    add =
r3, r3, #0x1</FONT></P><P><FONT face=3D"Times New Roman"> cmp r3, =
#0xa</FONT></P><P><FONT face=3D"Times New Roman">blt   =
1b</FONT></P><P><FONT face=3D"Times New Roman">2:    ldr   r2, [r1, =
#oNFSTAT]    @ wait ready</FONT></P><P><FONT face=3D"Times New =
Roman">tst    r2, #0x1</FONT></P><P><FONT face=3D"Times New Roman">beq =
2b</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r2, [r1, =
#oNFCONF]</FONT></P><P><FONT face=3D"Times New Roman">orr   r2, r2, =
#0x800             @ disable chip</FONT></P><P><FONT face=3D"Times New =
Roman">str   r2, [r1, #oNFCONF]</FONT></P><P><FONT face=3D"Times New =
Roman">@ get read to call C functions (for =
nand_read())</FONT></P><P><FONT face=3D"Times New Roman"> ldr   sp, =
DW_STACK_START  @ setup stack pointer</FONT></P><P><FONT face=3D"Times =
New Roman"> mov fp, #0                   @ no previous frame, so =
fp=3D0</FONT></P><P><FONT face=3D"Times New Roman">@ copy vivi to =
RAM</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r0, =
=3DVIVI_RAM_BASE</FONT></P><P><FONT face=3D"Times New =
Roman">/*********</FONT>=D4=DA<FONT face=3D"Times New =
Roman">/vivi/linux/platform/smdk2410.h</FONT>=D6=D0=B6=A8=D2=E5</P><P><FO=
NT face=3D"Times New Roman">#define VIVI_RAM_BASE              =
(DRAM_BASE + DRAM_SIZE - VIVI_RAM_SIZE)</FONT></P><P><FONT face=3D"Times =
New Roman">***************************************/</FONT></P><P><FONT =
face=3D"Times New Roman">mov     r1, #0x0</FONT></P><P><FONT =
face=3D"Times New Roman">mov r2, #0x20000              =
</FONT>=A3=BB<FONT face=3D"Times New Roman">0x20000-</FONT>=A1=B5<FONT =
face=3D"Times New Roman">128k</FONT>=D7=D6=BD=DA</P><P><FONT =
face=3D"Times New Roman">bl    nand_read_ll         </FONT>=A3=BB<FONT =
face=3D"Times New Roman">nand_read_ll</FONT>=D4=DA<FONT face=3D"Times =
New Roman">/vivi/arch/s<ST1:CHMETCNV tcsc=3D"0" numbertype=3D"1" =
negative=3D"False" hasspace=3D"False" sourcevalue=3D"3" unitname=3D"C" =
w:st=3D"on">3c</ST1:CHMETCNV>2410/nand_read.c</FONT>=D6=D0=B6=A8=D2=E5</P=
><P>=A3=BB<FONT face=3D"Times New =
Roman">r0,r1,r2</FONT>=B7=D6=B1=F0=CE=AA=BA=AF=CA=FD=B5=C4=C8=FD=B8=F6=B2=
=CE=CA=FD</P><P>=A3=BB=B4=D3<FONT face=3D"Times New =
Roman">NANDFlash</FONT>=B5=C4<FONT face=3D"Times New =
Roman">0</FONT>=B5=D8=D6=B7=BF=BD=B1=B4<FONT face=3D"Times New =
Roman">128k</FONT>=B5=BD<FONT face=3D"Times New =
Roman">SDRAM</FONT>=D6=B8=B6=A8=B4=A6</P><P><FONT face=3D"Times New =
Roman"> tst    r0, #0x0</FONT></P><P><FONT face=3D"Times New Roman">beq =
ok_nand_read</FONT></P><P><FONT face=3D"Times New Roman">#ifdef =
CONFIG_DEBUG_LL</FONT></P><P><FONT face=3D"Times New =
Roman">bad_nand_read:</FONT></P><P><FONT face=3D"Times New Roman">ldr   =
r0, STR_FAIL</FONT></P><P><FONT face=3D"Times New Roman">ldr   r1, =
SerBase</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintWord</FONT></P><P><FONT face=3D"Times New Roman">1:    b     1b     =
     @ infinite loop</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New =
Roman">ok_nand_read:</FONT></P><P><FONT face=3D"Times New Roman">#ifdef =
CONFIG_DEBUG_LL</FONT></P><P><FONT face=3D"Times New Roman">ldr   r0, =
STR_OK</FONT></P><P><FONT face=3D"Times New Roman">ldr   r1, =
SerBase</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintWord</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">@ =
verify</FONT></P><P><FONT face=3D"Times New Roman">mov r0, =
#0</FONT></P><P><FONT face=3D"Times New Roman">ldr   r1, =
=3D0x<ST1:CHMETCNV tcsc=3D"0" numbertype=3D"1" negative=3D"False" =
hasspace=3D"False" sourcevalue=3D"33" unitname=3D"F" =
w:st=3D"on">33f</ST1:CHMETCNV>00000</FONT></P><P><FONT face=3D"Times New =
Roman">mov r2, #0x400    @ 4 bytes * 1024 =3D =
4K-bytes</FONT></P><P><FONT face=3D"Times New =
Roman">go_next:</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r3, =
[r0], #4</FONT></P><P><FONT face=3D"Times New Roman">ldr   r4, [r1], =
#4</FONT></P><P><FONT face=3D"Times New Roman">teq  r3, =
r4</FONT></P><P><FONT face=3D"Times New Roman">bne  =
notmatch</FONT></P><P><FONT face=3D"Times New Roman"> subs       r2, r2, =
#4</FONT></P><P><FONT face=3D"Times New Roman">beq =
done_nand_read</FONT></P><P><FONT face=3D"Times New Roman">bne  =
go_next</FONT></P><P><FONT face=3D"Times New =
Roman">notmatch:</FONT></P><P><FONT face=3D"Times New Roman">#ifdef =
CONFIG_DEBUG_LL</FONT></P><P><FONT face=3D"Times New Roman">sub  r0, r0, =
#4</FONT></P><P><FONT face=3D"Times New Roman"> ldr   r1, =
SerBase</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintHexWord</FONT></P><P><FONT face=3D"Times New Roman">ldr   r0, =
STR_FAIL</FONT></P><P><FONT face=3D"Times New Roman">ldr   r1, =
SerBase</FONT></P><P><FONT face=3D"Times New Roman"> bl    =
PrintWord</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">1:    b     =
1b</FONT></P><P><FONT face=3D"Times New =
Roman">done_nand_read:</FONT></P><P><FONT face=3D"Times New =
Roman">#ifdef CONFIG_DEBUG_LL</FONT></P><P><FONT face=3D"Times New =
Roman">ldr   r0, STR_OK</FONT></P><P><FONT face=3D"Times New Roman">ldr  =
 r1, SerBase</FONT></P><P><FONT face=3D"Times New Roman">bl    =
PrintWord</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman"> mov pc, r10   =
                     </FONT>=A3=BB<FONT face=3D"Times New =
Roman">vivi</FONT>=BF=BD=B1=B4=B5=BD<FONT face=3D"Times New =
Roman">SDRAM</FONT>=CD=EA=B3=C9=A3=AC=BA=AF=CA=FD=B7=B5=BB=D8</P><P><FONT=
 face=3D"Times New =
Roman">*********************************/</FONT></P><P><FONT =
face=3D"Times New Roman">@ jump to ram</FONT></P><P><FONT face=3D"Times =
New Roman">ldr   r1, =3Don_the_ram</FONT></P><P><FONT face=3D"Times New =
Roman">add pc, r1, #0</FONT></P><P><FONT face=3D"Times New =
Roman">nop</FONT></P><P><FONT face=3D"Times New Roman"> =
nop</FONT></P><P><FONT face=3D"Times New Roman">1:    b     1b          =
@ infinite loop</FONT></P><P><FONT face=3D"Times New =
Roman">on_the_ram:</FONT></P><P><FONT face=3D"Times New =
Roman">#endif</FONT></P><P><FONT face=3D"Times New Roman">#ifdef =
CONFIG_DEBUG_LL</FONT></P><P><FON