static int transferToFlash(void* buffer, int size) {
int controller = 0;
int channel = 0;
if((((uint32_t)buffer) & 0x3) != 0) {
// the buffer needs to be aligned for DMA, last two bits have to be clear
return ERROR_ALIGN;
}
SET_REG(NAND + NAND_CONFIG, GET_REG(NAND + NAND_CONFIG) | (1 << NAND_CONFIG_DMASETTINGSHIFT));
SET_REG(NAND + NAND_TRANSFERSIZE, size - 1);
SET_REG(NAND + NAND_CON, 0x7F4);
CleanCPUDataCache();
dma_request(DMA_MEMORY, 4, 4, DMA_NAND, 4, 4, &controller, &channel, NULL);
dma_perform((uint32_t)buffer, DMA_NAND, size, 0, &controller, &channel);
if(dma_finish(controller, channel, 500) != 0) {
bufferPrintf("nand: dma timed out\r\n");
return ERROR_TIMEOUT;
}
if(wait_for_status_bit_3(500) != 0) {
bufferPrintf("nand: waiting for status bit 3 timed out\r\n");
return ERROR_TIMEOUT;
}
SET_REG(NAND + NAND_CON, NAND_CON_SETTING1);
CleanAndInvalidateCPUDataCache();
return 0;
}
static int transferToFlash(void* buffer, int size) {
int controller = 0;
int channel = 0;
if((((uint32_t)buffer) & 0x3) != 0) {
// the buffer needs to be aligned for DMA, last two bits have to be clear
return ERROR_ALIGN;
}
SET_REG(NAND + FMCTRL0, GET_REG(NAND + FMCTRL0) | (1 << FMCTRL0_DMASETTINGSHIFT));
SET_REG(NAND + FMDNUM, size - 1);
SET_REG(NAND + FMCTRL1, 0x7F4);
CleanCPUDataCache();
dma_request(DMA_MEMORY, 4, 4, DMA_NAND, 4, 4, &controller, &channel, NULL);
dma_perform((uint32_t)buffer, DMA_NAND, size, 0, &controller, &channel);
if(dma_finish(controller, channel, 500) != 0) {
bufferPrintf("nand: dma timed out\r\n");
return ERROR_TIMEOUT;
}
if(wait_for_transfer_done(500) != 0) {
bufferPrintf("nand: waiting for transfer done timed out\r\n");
return ERROR_TIMEOUT;
}
SET_REG(NAND + FMCTRL1, FMCTRL1_FLUSHFIFOS);
CleanAndInvalidateCPUDataCache();
return 0;
}
static void ecc_perform(int setting, int sectors, uint8_t* sectorData, uint8_t* eccData) {
SET_REG(NANDECC + NANDECC_CLEARINT, 1);
SET_REG(NANDECC + NANDECC_SETUP, ((sectors - 1) & 0x3) | setting);
SET_REG(NANDECC + NANDECC_DATA, (uint32_t) sectorData);
SET_REG(NANDECC + NANDECC_ECC, (uint32_t) eccData);
CleanCPUDataCache();
SET_REG(NANDECC + NANDECC_START, 1);
}
