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Flasher support for 512K flash

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A better way would be to cut the connecting function and flashing function and to move the whole mem computation to flash.c
Working flasher
This commit is contained in:
slurdge 2019-07-18 21:18:52 +02:00 • committed by Philippe Teuwen
commit 7bf3255a6c
5 changed files with 52 additions and 35 deletions
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29
bootrom/bootrom.c
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@ -153,28 +153,35 @@ void UsbPacketReceived(uint8_t *packet, int len) {
case CMD_FINISH_WRITE: {
uint32_t *flash_mem = (uint32_t *)(&_flash_start);
for (int j = 0; j < 2; j++) {
for (i = 0 + (64 * j); i < 64 + (64 * j); i++) {
flash_mem[i] = c->d.asDwords[i];
}
uint32_t flash_address = arg0 + (0x100 * j);
AT91PS_EFC efc_bank = AT91C_BASE_EFC0;
int offset = 0;
uint32_t page_n = (flash_address - ((uint32_t)flash_mem)) / AT91C_IFLASH_PAGE_SIZE;
if (page_n >= AT91C_IFLASH_NB_OF_PAGES / 2) {
page_n -= AT91C_IFLASH_NB_OF_PAGES / 2;
efc_bank = AT91C_BASE_EFC1;
// We need to offset the writes or it will not fill the correct bank write buffer.
offset = (AT91C_IFLASH_NB_OF_PAGES / 2) * AT91C_IFLASH_PAGE_SIZE / sizeof(uint32_t);
}
for (i = 0 + (64 * j); i < 64 + (64 * j); i++) {
flash_mem[offset+i] = c->d.asDwords[i];
}
/* Check that the address that we are supposed to write to is within our allowed region */
if (((flash_address + AT91C_IFLASH_PAGE_SIZE - 1) >= end_addr) || (flash_address < start_addr)) {
/* Disallow write */
dont_ack = 1;
reply_old(CMD_NACK, 0, 0, 0, 0, 0);
} else {
uint32_t page_n = (flash_address - ((uint32_t)flash_mem)) / AT91C_IFLASH_PAGE_SIZE;
/* Translate address to flash page and do flash, update here for the 512k part */
AT91C_BASE_EFC0->EFC_FCR = MC_FLASH_COMMAND_KEY |
MC_FLASH_COMMAND_PAGEN(page_n) |
AT91C_MC_FCMD_START_PROG;
efc_bank->EFC_FCR = MC_FLASH_COMMAND_KEY |
MC_FLASH_COMMAND_PAGEN(page_n) |
AT91C_MC_FCMD_START_PROG;
}
// Wait until flashing of page finishes
uint32_t sr;
while (!((sr = AT91C_BASE_EFC0->EFC_FSR) & AT91C_MC_FRDY));
while (!((sr = efc_bank->EFC_FSR) & AT91C_MC_FRDY));
if (sr & (AT91C_MC_LOCKE | AT91C_MC_PROGE)) {
dont_ack = 1;
reply_old(CMD_NACK, sr, 0, 0, 0, 0);