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openwrt-xburst/target/linux/at91-2.6/image/dfboot/src/main.c

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add new dfboot loader - a complete revison of romboot code. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7492 3c298f89-4303-0410-b956-a3cf2f4a3e73
2007-06-04 20:41:40 +03:00
/*----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support - ROUSSET -
*----------------------------------------------------------------------------
* The software is delivered "AS IS" without warranty or condition of any
* kind, either express, implied or statutory. This includes without
* limitation any warranty or condition with respect to merchantability or
* fitness for any particular purpose, or against the infringements of
* intellectual property rights of others.
*----------------------------------------------------------------------------
* File Name : main.c
* Object :
* Creation : HIi 10/10/2003
* Modif : HIi 15/06/2004 : add crc32 to verify the download
* from dataflash
* : HIi 21/09/2004 : Set first PLLA to 180Mhz and MCK to
* 60Mhz to speed up dataflash boot (15Mhz)
* : MLC 12/04/2005 : Modify SetPLL() to avoid errata
* : USA 30/12/2005 : Change to page Size 1056
* Change startaddress to C0008400
* Change SPI Speed to ~4 Mhz
* Add retry on CRC Error
*----------------------------------------------------------------------------
*/
#include "config.h"
#include "stdio.h"
#include "AT91RM9200.h"
#include "lib_AT91RM9200.h"
#include "com.h"
#include "main.h"
#include "dataflash.h"
#include "AT91C_MCI_Device.h"
#define DEBUGOUT
#define XMODEM
#define MEMDISP
#ifdef PAGESZ_1056
#define PAGESIZE 1056
#else
#define PAGESIZE 1024
#endif
#define AT91C_SDRAM_START 0x20000000
#define AT91C_BOOT_ADDR 0x21F00000
#define AT91C_BOOT_SIZE 128*PAGESIZE
#ifdef PAGESZ_1056
#define AT91C_BOOT_DATAFLASH_ADDR 0xC0008400
#else
#define AT91C_BOOT_DATAFLASH_ADDR 0xC0008000
#endif
#define AT91C_PLLA_VALUE 0x2026BE04 // crystal= 18.432MHz
//#define AT91C_PLLA_VALUE 0x202CBE01 // crystal= 4MHz
#define DISP_LINE_LEN 16
// Reason for boot failure
#define IMAGE_BAD_SIZE 0
#define IMAGE_READ_FAILURE 1
#define IMAGE_CRC_ERROR 2
#define IMAGE_ERROR 3
#define SUCCESS -1
/* prototypes*/
extern void AT91F_ST_ASM_HANDLER(void);
extern void Jump(unsigned int addr);
const char *menu_dataflash[] = {
#ifdef XMODEM
"1: P DFboot\n",
"2: P U-Boot\n",
#endif
"3: P SDCard\n",
#ifdef PAGESZ_1056
"4: R UBOOT\n",
#else
"4: R UBOOT\n",
#endif
#ifdef XMODEM
"5: P DF [addr]\n",
#endif
"6: RD DF [addr]\n",
"7: E DF\n"
};
#ifdef XMODEM
#define MAXMENU 7
#else
#define MAXMENU 4
#endif
char message[20];
#ifdef XMODEM
volatile char XmodemComplete = 0;
#endif
unsigned int StTick = 0;
AT91S_RomBoot const *pAT91;
#ifdef XMODEM
AT91S_SBuffer sXmBuffer;
AT91S_SvcXmodem svcXmodem;
AT91S_Pipe xmodemPipe;
#endif
AT91S_CtlTempo ctlTempo;
//*--------------------------------------------------------------------------------------
//* Function Name : GetTickCount()
//* Object : Return the number of systimer tick
//* Input Parameters :
//* Output Parameters :
//*--------------------------------------------------------------------------------------
unsigned int GetTickCount(void)
{
return StTick;
}
#ifdef XMODEM
//*--------------------------------------------------------------------------------------
//* Function Name : AT91_XmodemComplete()
//* Object : Perform the remap and jump to appli in RAM
//* Input Parameters :
//* Output Parameters :
//*--------------------------------------------------------------------------------------
static void AT91_XmodemComplete(AT91S_PipeStatus status, void *pVoid)
{
/* stop the Xmodem tempo */
svcXmodem.tempo.Stop(&(svcXmodem.tempo));
XmodemComplete = 1;
}
//*--------------------------------------------------------------------------------------
//* Function Name : AT91F_XmodemProtocol(AT91S_PipeStatus status, void *pVoid)
//* Object : Xmodem dispatcher
//* Input Parameters :
//* Output Parameters :
//*--------------------------------------------------------------------------------------
static void XmodemProtocol(AT91S_PipeStatus status, void *pVoid)
{
AT91PS_SBuffer pSBuffer = (AT91PS_SBuffer) xmodemPipe.pBuffer->pChild;
AT91PS_USART pUsart = svcXmodem.pUsart;
if (pSBuffer->szRdBuffer == 0) {
/* Start a tempo to wait the Xmodem protocol complete */
svcXmodem.tempo.Start(&(svcXmodem.tempo), 10, 0, AT91_XmodemComplete, pUsart);
}
}
#endif
//*--------------------------------------------------------------------------------------
//* Function Name : irq1_c_handler()
//* Object : C Interrupt handler for Interrutp source 1
//* Input Parameters : none
//* Output Parameters : none
//*--------------------------------------------------------------------------------------
void AT91F_ST_HANDLER(void)
{
volatile unsigned int csr = *AT91C_DBGU_CSR;
#ifdef XMODEM
unsigned int error;
#endif
if (AT91C_BASE_ST->ST_SR & 0x01) {
StTick++;
ctlTempo.CtlTempoTick(&ctlTempo);
return;
}
#ifdef XMODEM
error = AT91F_US_Error((AT91PS_USART)AT91C_BASE_DBGU);
if (csr & error) {
/* Stop previous Xmodem transmition*/
*(AT91C_DBGU_CR) = AT91C_US_RSTSTA;
AT91F_US_DisableIt((AT91PS_USART)AT91C_BASE_DBGU, AT91C_US_ENDRX);
AT91F_US_EnableIt((AT91PS_USART)AT91C_BASE_DBGU, AT91C_US_RXRDY);
}
else if (csr & (AT91C_US_TXRDY | AT91C_US_ENDTX | AT91C_US_TXEMPTY |
AT91C_US_RXRDY | AT91C_US_ENDRX | AT91C_US_TIMEOUT |
AT91C_US_RXBUFF)) {
if ( !(svcXmodem.eot) )
svcXmodem.Handler(&svcXmodem, csr);
}
#endif
}
//*-----------------------------------------------------------------------------
//* Function Name : AT91F_DisplayMenu()
//* Object :
//* Input Parameters :
//* Return value :
//*-----------------------------------------------------------------------------
static int AT91F_DisplayMenu(void)
{
int i, mci_present = 0;
printf("\nDF LOADER %s %s %s\n",AT91C_VERSION,__DATE__,__TIME__);
AT91F_DataflashPrintInfo();
mci_present = AT91F_MCI_Init();
for(i = 0; i < MAXMENU; i++) {
puts(menu_dataflash[i]);
}
return mci_present;
}
//*-----------------------------------------------------------------------------
//* Function Name : AsciiToHex()
//* Object : ascii to hexa conversion
//* Input Parameters :
//* Return value :
//*-----------------------------------------------------------------------------
static unsigned int AsciiToHex(char *s, unsigned int *val)
{
int n;
*val=0;
if(s[0] == '0' && ((s[1] == 'x') || (s[1] == 'X')))
s+=2;
n = 0;
while((n < 8) && (s[n] !=0))
{
*val <<= 4;
if ( (s[n] >= '0') && (s[n] <='9'))
*val += (s[n] - '0');
else
if ((s[n] >= 'a') && (s[n] <='f'))
*val += (s[n] - 0x57);
else
if ((s[n] >= 'A') && (s[n] <='F'))
*val += (s[n] - 0x37);
else
return 0;
n++;
}
return 1;
}
#ifdef MEMDISP
//*-----------------------------------------------------------------------------
//* Function Name : AT91F_MemoryDisplay()
//* Object : Display the content of the dataflash
//* Input Parameters :
//* Return value :
//*-----------------------------------------------------------------------------
static int AT91F_MemoryDisplay(unsigned int addr, unsigned int length)
{
unsigned long i, nbytes, linebytes;
char *cp;
// unsigned int *uip;
// unsigned short *usp;
unsigned char *ucp;
char linebuf[DISP_LINE_LEN];
// nbytes = length * size;
nbytes = length;
do
{
// uip = (unsigned int *)linebuf;
// usp = (unsigned short *)linebuf;
ucp = (unsigned char *)linebuf;
printf("%08x:", addr);
linebytes = (nbytes > DISP_LINE_LEN)?DISP_LINE_LEN:nbytes;
if((addr & 0xF0000000) == 0x20000000) {
for(i = 0; i < linebytes; i ++) {
linebuf[i] = *(char *)(addr+i);
}
} else {
read_dataflash(addr, linebytes, linebuf);
}
for (i=0; i<linebytes; i++)
{
/* if (size == 4)
printf(" %08x", *uip++);
else if (size == 2)
printf(" %04x", *usp++);
else
*/
printf(" %02x", *ucp++);
// addr += size;
addr++;
}
printf(" ");
cp = linebuf;
for (i=0; i<linebytes; i++) {
if ((*cp < 0x20) || (*cp > 0x7e))
printf(".");
else
printf("%c", *cp);
cp++;
}
printf("\n");
nbytes -= linebytes;
} while (nbytes > 0);
return 0;
}
#endif
//*--------------------------------------------------------------------------------------
//* Function Name : AT91F_SetPLL
//* Object : Set the PLLA to 180Mhz and Master clock to 60 Mhz
//* Input Parameters :
//* Output Parameters :
//*--------------------------------------------------------------------------------------
static unsigned int AT91F_SetPLL(void)
{
AT91_REG tmp;
AT91PS_PMC pPmc = AT91C_BASE_PMC;
AT91PS_CKGR pCkgr = AT91C_BASE_CKGR;
pPmc->PMC_IDR = 0xFFFFFFFF;
/* -Setup the PLL A */
pCkgr->CKGR_PLLAR = AT91C_PLLA_VALUE;
while (!(*AT91C_PMC_SR & AT91C_PMC_LOCKA));
/* - Switch Master Clock from PLLB to PLLA/3 */
tmp = pPmc->PMC_MCKR;
/* See Atmel Errata #27 and #28 */
if (tmp & 0x0000001C) {
tmp = (tmp & ~0x0000001C);
pPmc->PMC_MCKR = tmp;
while (!(*AT91C_PMC_SR & AT91C_PMC_MCKRDY));
}
if (tmp != 0x00000202) {
pPmc->PMC_MCKR = 0x00000202;
if ((tmp & 0x00000003) != 0x00000002)
while (!(*AT91C_PMC_SR & AT91C_PMC_MCKRDY));
}
return 1;
}
//*--------------------------------------------------------------------------------------
//* Function Name : AT91F_ResetRegisters
//* Object : Restore the initial state to registers
//* Input Parameters :
//* Output Parameters :
//*--------------------------------------------------------------------------------------
static unsigned int AT91F_ResetRegisters(void)
{
volatile int i = 0;
/* set the PIOs in input*/
/* This disables the UART output, so dont execute for now*/
#ifndef DEBUGOUT
*AT91C_PIOA_ODR = 0xFFFFFFFF; /* Disables all the output pins */
*AT91C_PIOA_PER = 0xFFFFFFFF; /* Enables the PIO to control all the pins */
#endif
AT91F_AIC_DisableIt (AT91C_BASE_AIC, AT91C_ID_SYS);
/* close all peripheral clocks */
#ifndef DEBUGOUT
AT91C_BASE_PMC->PMC_PCDR = 0xFFFFFFFC;
#endif
/* Disable core interrupts and set supervisor mode */
__asm__ ("msr CPSR_c, #0xDF"); //* ARM_MODE_SYS(0x1F) | I_BIT(0x80) | F_BIT(0x40)
/* Clear all the interrupts */
*AT91C_AIC_ICCR = 0xffffffff;
/* read the AIC_IVR and AIC_FVR */
i = *AT91C_AIC_IVR;
i = *AT91C_AIC_FVR;
/* write the end of interrupt control register */
*AT91C_AIC_EOICR = 0;
return 1;
}
static int AT91F_LoadBoot(void)
{
// volatile unsigned int crc1 = 0, crc2 = 0;
volatile unsigned int SizeToDownload = 0x21400;
volatile unsigned int AddressToDownload = AT91C_BOOT_ADDR;
#if 0
/* Read vector 6 to extract size to load */
if (read_dataflash(AT91C_BOOT_DATAFLASH_ADDR, 32,
(char *)AddressToDownload) != AT91C_DATAFLASH_OK)
{
printf("Bad Code Size\n");
return IMAGE_BAD_SIZE;
}
/* calculate the size to download */
SizeToDownload = *(int *)(AddressToDownload + AT91C_OFFSET_VECT6);
#endif
// printf("\nLoad UBOOT from dataflash[%x] to SDRAM[%x]\n",
// AT91C_BOOT_DATAFLASH_ADDR, AT91C_BOOT_ADDR);
if (read_dataflash(AT91C_BOOT_DATAFLASH_ADDR, SizeToDownload + 8,
(char *)AddressToDownload) != AT91C_DATAFLASH_OK)
{
printf("F DF RD\n");
return IMAGE_READ_FAILURE;
}
#if 0
pAT91->CRC32((const unsigned char *)AT91C_BOOT_ADDR,
(unsigned int)SizeToDownload , (unsigned int *)&crc2);
crc1 = (int)(*(char *)(AddressToDownload + SizeToDownload)) +
(int)(*(char *)(AddressToDownload + SizeToDownload + 1) << 8) +
(int)(*(char *)(AddressToDownload + SizeToDownload + 2) << 16) +
(int)(*(char *)(AddressToDownload + SizeToDownload + 3) << 24);
/* Restore the value of Vector 6 */
*(int *)(AddressToDownload + AT91C_OFFSET_VECT6) =
*(int *)(AddressToDownload + SizeToDownload + 4);
if (crc1 != crc2) {
printf("DF CRC bad %x != %x\n",crc1,crc2);
return IMAGE_CRC_ERROR;
}
#endif
return SUCCESS;
}
static int AT91F_StartBoot(void)
{
int sts;
if((sts = AT91F_LoadBoot()) != SUCCESS) return sts;
// printf("\n");
// printf("PLLA[180MHz], MCK[60Mhz] ==> Start UBOOT\n");
if (AT91F_ResetRegisters())
{
printf("Jump");
Jump(AT91C_BOOT_ADDR);
// LED_blink(0);
}
return IMAGE_ERROR;
}
#if 0
static void AT91F_RepeatedStartBoot(void)
{
int i;
for(i = 0; i < CRC_RETRIES; i++) {
if(AT91F_StartBoot() != IMAGE_CRC_ERROR){
// LED_blink(1);
return;
}
}
return;
}
#endif
#define TRUE 1
#define FALSE 0
#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define TRX_VERSION 1
struct trx_header {
unsigned int magic;
unsigned int len;
unsigned int crc32;
unsigned int flag_version;
unsigned int offsets[3];
};
#define AT91C_MCI_TIMEOUT 1000000
extern AT91S_MciDevice MCI_Device;
extern void AT91F_MCIDeviceWaitReady(unsigned int);
extern int AT91F_MCI_ReadBlockSwab(AT91PS_MciDevice, int, unsigned int *, int);
int Program_From_MCI(void)
{
int i;
unsigned int Max_Read_DataBlock_Length;
int block = 0;
int buffer = AT91C_DOWNLOAD_BASE_ADDRESS;
int bufpos = AT91C_DOWNLOAD_BASE_ADDRESS;
int NbPage = 0;
struct trx_header *p;
p = (struct trx_header *)bufpos;
Max_Read_DataBlock_Length = MCI_Device.pMCI_DeviceFeatures->Max_Read_DataBlock_Length;
AT91F_MCIDeviceWaitReady(AT91C_MCI_TIMEOUT);
AT91F_MCI_ReadBlockSwab(&MCI_Device, block*Max_Read_DataBlock_Length, (unsigned int *)bufpos, Max_Read_DataBlock_Length);
if (p->magic != TRX_MAGIC) {
printf("Inv IMG 0x%08x\n", p->magic);
return FALSE;
}
printf("RDSD");
AT91C_BASE_PIOC->PIO_CODR = AT91C_PIO_PC7 | AT91C_PIO_PC15 | AT91C_PIO_PC8 | AT91C_PIO_PC14;
for (i=0; i<(p->len/512); i++) {
AT91F_MCI_ReadBlockSwab(&MCI_Device, block*Max_Read_DataBlock_Length, (unsigned int *)bufpos, Max_Read_DataBlock_Length);
block++;
bufpos += Max_Read_DataBlock_Length;
}
NbPage = 0;
i = dataflash_info[0].Device.pages_number;
while(i >>= 1)
NbPage++;
i = ((p->offsets[1] - p->offsets[0])/ 512) + 1 + (NbPage << 13) + (dataflash_info[0].Device.pages_size << 17);
*(int *)(buffer + p->offsets[0] + AT91C_OFFSET_VECT6) = i;
printf(" WDFB");
AT91C_BASE_PIOC->PIO_CODR = AT91C_PIO_PC7 | AT91C_PIO_PC15 | AT91C_PIO_PC14;
AT91C_BASE_PIOC->PIO_SODR = AT91C_PIO_PC8;
write_dataflash(0xc0000000, buffer + p->offsets[0], p->offsets[1] - p->offsets[0]);
printf(" WUB");
AT91C_BASE_PIOC->PIO_CODR = AT91C_PIO_PC7 | AT91C_PIO_PC15;
AT91C_BASE_PIOC->PIO_SODR = AT91C_PIO_PC8 | AT91C_PIO_PC14;
write_dataflash(0xc0008000, buffer + p->offsets[1], p->offsets[2] - p->offsets[1]);
printf(" WKRFS");
AT91C_BASE_PIOC->PIO_CODR = AT91C_PIO_PC8 | AT91C_PIO_PC15;
AT91C_BASE_PIOC->PIO_SODR = AT91C_PIO_PC7 | AT91C_PIO_PC14;
write_dataflash(0xc0042000, buffer + p->offsets[2], p->len - p->offsets[2]);
AT91C_BASE_PIOC->PIO_CODR = AT91C_PIO_PC8 | AT91C_PIO_PC14;
AT91C_BASE_PIOC->PIO_SODR = AT91C_PIO_PC7 | AT91C_PIO_PC15;
return TRUE;
}
//*----------------------------------------------------------------------------
//* Function Name : main
//* Object : Main function
//* Input Parameters : none
//* Output Parameters : True
//*----------------------------------------------------------------------------
int main(void)
{
#ifdef XMODEM
AT91PS_Buffer pXmBuffer;
AT91PS_SvcComm pSvcXmodem;
#endif
AT91S_SvcTempo svcBootTempo; // Link to a AT91S_Tempo object
unsigned int ix;
volatile unsigned int AddressToDownload, SizeToDownload;
unsigned int DeviceAddress = 0;
char command = 0;
#ifdef XMODEM
volatile int i = 0;
unsigned int crc1 = 0, crc2 = 0;
volatile int device;
int NbPage;
#endif
volatile int Nb_Device = 0;
int mci_present = 0;
pAT91 = AT91C_ROM_BOOT_ADDRESS;
if (!AT91F_SetPLL())
{
printf("F SetPLL");
while(1);
}
at91_init_uarts();
/* Tempo Initialisation */
pAT91->OpenCtlTempo(&ctlTempo, (void *) &(pAT91->SYSTIMER_DESC));
ctlTempo.CtlTempoStart((void *) &(pAT91->SYSTIMER_DESC));
// Attach the tempo to a tempo controler
ctlTempo.CtlTempoCreate(&ctlTempo, &svcBootTempo);
// LED_init();
// LED_blink(2);
#ifdef XMODEM
/* Xmodem Initialisation */
pXmBuffer = pAT91->OpenSBuffer(&sXmBuffer);
pSvcXmodem = pAT91->OpenSvcXmodem(&svcXmodem,
(AT91PS_USART)AT91C_BASE_DBGU, &ctlTempo);
pAT91->OpenPipe(&xmodemPipe, pSvcXmodem, pXmBuffer);
#endif
/* System Timer initialization */
AT91F_AIC_ConfigureIt(
AT91C_BASE_AIC, // AIC base address
AT91C_ID_SYS, // System peripheral ID
AT91C_AIC_PRIOR_HIGHEST, // Max priority
AT91C_AIC_SRCTYPE_INT_LEVEL_SENSITIVE, // Level sensitive
AT91F_ST_ASM_HANDLER
);
/* Enable ST interrupt */
AT91F_AIC_EnableIt(AT91C_BASE_AIC, AT91C_ID_SYS);
#ifndef PRODTEST
/* Start tempo to start Boot in a delay of
* AT91C_DELAY_TO_BOOT sec if no key pressed */
svcBootTempo.Start(&svcBootTempo, AT91C_DELAY_TO_BOOT,
0, AT91F_StartBoot, NULL);
#endif
while(1)
{
while(command == 0)
{
AddressToDownload = AT91C_DOWNLOAD_BASE_ADDRESS;
SizeToDownload = AT91C_DOWNLOAD_MAX_SIZE;
DeviceAddress = 0;
/* try to detect Dataflash */
if (!Nb_Device)
Nb_Device = AT91F_DataflashInit();
mci_present = AT91F_DisplayMenu();
#ifdef PRODTEST
if (mci_present) {
if (Program_From_MCI())
AT91F_StartBoot();
}
#endif
message[0] = 0;
AT91F_ReadLine ("Enter: ", message);
#ifndef PRODTEST
/* stop tempo ==> stop autoboot */
svcBootTempo.Stop(&svcBootTempo);
#endif
command = message[0];
for(ix = 1; (message[ix] == ' ') && (ix < 12); ix++); // Skip some whitespace
if(!AsciiToHex(&message[ix], &DeviceAddress) )
DeviceAddress = 0; // Illegal DeviceAddress
switch(command)
{
#ifdef XMODEM
case '1':
case '2':
case '5':
if(command == '1') {
DeviceAddress = 0xC0000000;
// printf("Download DataflashBoot.bin to [0x%x]\n", DeviceAddress);
} else if(command == '2') {
DeviceAddress = AT91C_BOOT_DATAFLASH_ADDR;
// printf("Download u-boot.bin to [0x%x]\n", DeviceAddress);
} else {
// printf("Download Dataflash to [0x%x]\n", DeviceAddress);
}
switch(DeviceAddress & 0xFF000000)
{
case CFG_DATAFLASH_LOGIC_ADDR_CS0:
if (dataflash_info[0].id == 0){
printf("No DF");
AT91F_WaitKeyPressed();
command = 0;
}
device = 0;
break;
case CFG_DATAFLASH_LOGIC_ADDR_CS3:
if (dataflash_info[1].id == 0){
printf("No DF");
AT91F_WaitKeyPressed();
command = 0;
}
device = 1;
break;
default:
command = 0;
break;
}
break;
#endif
case '3':
if (mci_present)
Program_From_MCI();
command = 0;
break;
case '4':
AT91F_StartBoot();
command = 0;
break;
#ifdef MEMDISP
case '6':
do
{
AT91F_MemoryDisplay(DeviceAddress, 256);
AT91F_ReadLine (NULL, message);
DeviceAddress += 0x100;
}
while(message[0] == '\0');
command = 0;
break;
#endif
case '7':
switch(DeviceAddress & 0xFF000000)
{
case CFG_DATAFLASH_LOGIC_ADDR_CS0:
break;
case CFG_DATAFLASH_LOGIC_ADDR_CS3:
break;
default:
command = 0;
break;
}
if (command != 0) {
AT91F_ReadLine ("RDY ERA\nSure?",
message);
if(message[0] == 'Y' || message[0] == 'y') {
erase_dataflash(DeviceAddress & 0xFF000000);
// printf("Erase complete\n\n");
}
// else
// printf("Erase aborted\n");
}
command = 0;
break;
default:
command = 0;
break;
}
}
#ifdef XMODEM
for(i = 0; i <= AT91C_DOWNLOAD_MAX_SIZE; i++)
*(unsigned char *)(AddressToDownload + i) = 0;
xmodemPipe.Read(&xmodemPipe, (char *)AddressToDownload,
SizeToDownload, XmodemProtocol, 0);
while(XmodemComplete !=1);
SizeToDownload = (unsigned int)((svcXmodem.pData) -
(unsigned int)AddressToDownload);
/* Modification of vector 6 */
if ((DeviceAddress == CFG_DATAFLASH_LOGIC_ADDR_CS0)) {
// Vector 6 must be compliant to the BootRom description (ref Datasheet)
NbPage = 0;
i = dataflash_info[device].Device.pages_number;
while(i >>= 1)
NbPage++;
i = (SizeToDownload / 512)+1 + (NbPage << 13) +
(dataflash_info[device].Device.pages_size << 17); //+4 to add crc32
SizeToDownload = 512 * (i &0xFF);
}
else
{
/* Save the contents of vector 6 ==> will be restored
* at boot time (AT91F_StartBoot) */
*(int *)(AddressToDownload + SizeToDownload + 4) =
*(int *)(AddressToDownload + AT91C_OFFSET_VECT6);
/* Modify Vector 6 to contain the size of the
* file to copy (Dataflash -> SDRAM)*/
i = SizeToDownload;
}
*(int *)(AddressToDownload + AT91C_OFFSET_VECT6) = i;
// printf("\nModification of Arm Vector 6 :%x\n", i);
// printf("\nWrite %d bytes in DataFlash [0x%x]\n",SizeToDownload, DeviceAddress);
crc1 = 0;
pAT91->CRC32((const unsigned char *)AddressToDownload, SizeToDownload , &crc1);
/* Add the crc32 at the end of the code */
*(char *)(AddressToDownload + SizeToDownload) = (char)(crc1 & 0x000000FF);
*(char *)(AddressToDownload + SizeToDownload + 1) = (char)((crc1 & 0x0000FF00) >> 8);
*(char *)(AddressToDownload + SizeToDownload + 2) = (char)((crc1 & 0x00FF0000) >> 16);
*(char *)(AddressToDownload + SizeToDownload + 3) = (char)((crc1 & 0xFF000000) >> 24);
/* write dataflash */
write_dataflash (DeviceAddress, AddressToDownload, (SizeToDownload + 8));
/* clear the buffer before read */
for(i=0; i <= SizeToDownload; i++)
*(unsigned char *)(AddressToDownload + i) = 0;
/* Read dataflash to check the validity of the data */
read_dataflash (DeviceAddress, (SizeToDownload + 4), (char *)(AddressToDownload));
printf("VFY: ");
crc2 = 0;
pAT91->CRC32((const unsigned char *)AddressToDownload, SizeToDownload , &crc2);
crc1 = (int)(*(char *)(AddressToDownload + SizeToDownload)) +
(int)(*(char *)(AddressToDownload + SizeToDownload + 1) << 8) +
(int)(*(char *)(AddressToDownload + SizeToDownload + 2) << 16) +
(int)(*(char *)(AddressToDownload + SizeToDownload + 3) << 24);
if (crc1 != crc2)
printf("ERR");
else
printf("OK");
command = 0;
XmodemComplete = 0;
AT91F_WaitKeyPressed();
#endif
}
}
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