int saveenv(void)
{
ulong total;
int ret = 0;
env_ptr->flags++;
total = CFG_ENV_SIZE;
if(gd->env_valid == 1) {
puts ("Erasing redundant Nand...");
if (nand_erase(&nand_info[0],
CFG_ENV_OFFSET_REDUND, CFG_ENV_SIZE))
return 1;
puts ("Writing to redundant Nand... ");
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
(u_char*) env_ptr);
} else {
puts ("Erasing Nand...");
if (nand_erase(&nand_info[0],
CFG_ENV_OFFSET, CFG_ENV_SIZE))
return 1;
puts ("Writing to Nand... ");
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total,
(u_char*) env_ptr);
}
if (ret || total != CFG_ENV_SIZE)
return 1;
puts ("done\n");
gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
return ret;
}
void sdram_to_nand_test()
{
unsigned long sdram_addr,nand_addr,len;
printf("sdram addr,nand addr,len:");
scanf("%d %d %d",&sdram_addr,&nand_addr,&len);
nand_erase(0);/* 1块 128k */
printf("Erase block 0 ok\r\n");
nand_erase(1);
printf("Erase block 0 ok\r\n");
nand_erase(2);
printf("Erase block 0 ok\r\n");
copy_sdram_to_nand((unsigned long *)sdram_addr,(unsigned long)nand_addr,len);
}
void write_test()
{
char c;
int count = 0;
unsigned char buffer[128];
printf("Enter a string:\r\n");
// 接收字符串，回车时表示结束
while(1)
{
c = getc();
putc(c);
if(c == '\r')
{
buffer[count] = '\0';
break;
}
else
{
buffer[count++] = c;
}
}
printf("\r\n");
// 擦除第0个块
nand_erase(0);
printf("Erase block 0 ok\r\n");
// 写第0个块
copy_sdram_to_nand(buffer, (unsigned long)0, strlen((char *)buffer)+1);
printf("Write %s ok\r\n",buffer);
}
int do_insAndroidUserImage(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
int ret = 0;
nand_write_options_t opts;
memset(&opts, 0, sizeof(opts));
//------------------------------------------------------------------
opts.pad = 0;
opts.blockalign = 1;
opts.writeoob = 1;
opts.autoplace = 1;
opts.offset = 0x9000000;
opts.length = readl(0x27FFFFE8);
opts.buffer = readl(0x27FFFFE0);
if(opts.length > 0x500000) opts.quiet = 0;
else opts.quiet = 1;
printf("Start Addr : %X, Size : %X \n",opts.buffer,opts.length);
nand_erase(&nand_info[0], opts.buffer, &opts.length);
ret = nand_write_opts(&nand_info[0], &opts);
printf("Writed User Data \n");
printf("Installed Android UserData Image image. \n");
return ret == 0 ? 0 : 1;
return 1;
}
/**
* 作用:对nand标强制擦除
*
* 参数:
* @blockid ---block块的字符串
*
*
* 描述:nand强制擦除功能,当如果有软件坏块时也可以用此函数来强制擦除
*/
void bsp_nand_erase_force(char *blockid)
{
int ret = NANDC_ERROR;
unsigned int id;
char *blk_id = bsp_nand_argument_check(blockid);
/* string to int */
ret= str2ul(blk_id, &id);
if(ret)
{
NAND_TRACE(("[%s]ERROR: string to integer failed, ret = 0x%x.\n", __FUNCTION__, ret));
goto ERRO;
}
/*直接擦除*/
ret = nand_erase(id);
if(ret)
{
NAND_TRACE(("[%s]ERROR: nand check bad failed, ret = 0x%x.\n", __FUNCTION__, ret));
goto ERRO;
}
else
{
NAND_TRACE(("SUCCESS: erase block %x forcely.\n", id));
}
return;
ERRO:
return;
}
/* need transfer two para :blk_num ,start_blk */
int handle_nerase(void)
{
if (com_argc < 5) {
printf(" Usage: nerase (1) (2) (3) (4)\n"
" 1:start block number\n"
" 2:block length\n"
" 3:device index number\n"
" 4:flash chip index number\n");
return -1;
}
init_nand_in();
nand_in.start = atoi(com_argv[1]);
nand_in.length = atoi(com_argv[2]);
nand_in.dev = atoi(com_argv[3]);
if (atoi(com_argv[4]) >= MAX_DEV_NUM) {
printf(" Flash index number overflow!\n");
return -1;
}
(nand_in.cs_map)[atoi(com_argv[4])] = 1;
if (nand_erase(&nand_in) < 1)
return -1;
return 1;
}
int VFL_Erase(u16 block) {
u16 physicalBlock;
int ret;
int bank;
int i;
block = block + FTLData->field_4;
for(bank = 0; bank < NANDGeometry->banksTotal; ++bank) {
if(vfl_check_remap_scheduled(bank, block))
{
vfl_remap_block(bank, block);
vfl_mark_remap_done(bank, block);
vfl_commit_cxt(bank);
}
physicalBlock = virtual_block_to_physical_block(bank, block);
for(i = 0; i < 3; ++i)
{
ret = nand_erase(bank, physicalBlock);
if(ret == 0)
break;
}
if(ret) {
LOG("ftl: block erase failed for bank %d, block %d\n", bank, block);
// FIXME: properly handle this
return ret;
}
}
return 0;
}
int do_insAndroidRamdisk(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
int ret = 0;
nand_write_options_t opts;
memset(&opts, 0, sizeof(opts));
opts.pad = 1;
opts.blockalign = 1;
opts.writeoob = 0;
opts.autoplace = 1;
//------------------------------------------------------------------
printf("Start android Ramdisk installation. \n");
opts.offset = 0x600000;
opts.length = readl(0x27FFFFC8);
opts.buffer = readl(0x27FFFFC0);
if(opts.length > 0x500000) opts.quiet = 0;
else opts.quiet = 1;
nand_erase(&nand_info[0], opts.buffer, &opts.length);
ret = nand_write_opts(&nand_info[0], &opts);
printf("Writed Ramdisk \n");
printf("Installed Android Ramdisk image. \n");
return ret == 0 ? 0 : 1;
return 1;
}
void nand_test_erase(void)
{
nand_erase(0,1105);
rt_kprintf("total block are erased \n");
nand_read_total(0,1105);
rt_kprintf("total block are readed \n");
}
int do_insnand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
size_t total = CFG_ENV_OFFSET;
ulong addr = PHYS_SDRAM_1;
movi_read((uint) addr, ofsinfo.bl2, MOVI_BL2_BLKCNT);
nand_erase(&nand_info[0], 0x0, CFG_ENV_OFFSET + CFG_ENV_SIZE);
nand_write(&nand_info[0], 0x0, &total, (u_char *) addr);
printf("Done\n");
return 1;
}
void cmd_nand_erase(int argc, char** argv)
{
if(argc < 3) {
bufferPrintf("Usage: %s <bank> <block> -- You probably don't want to do this.\r\n", argv[0]);
return;
}
uint32_t bank = parseNumber(argv[1]);
uint32_t block = parseNumber(argv[2]);
bufferPrintf("Erasing bank %d, block %d...\r\n", bank, block);
bufferPrintf("nand_erase: %d\r\n", nand_erase(bank, block));
}
int saveenv_nand_adv(void)
{
size_t total;
int ret = 0;
u_char *tmp;
total = CFG_ENV_OFFSET;
tmp = (u_char *) malloc(total);
nand_read(&nand_info[0], 0x0, &total, (u_char *) tmp);
puts("Erasing Nand...");
nand_erase(&nand_info[0], 0x0, CFG_ENV_OFFSET + CFG_ENV_SIZE);
//#ifndef CONFIG_S5PC100_EVT1
if (nand_erase(&nand_info[0], 0x0, CFG_ENV_OFFSET + CFG_ENV_SIZE)) {
free(tmp);
return 1;
}
//#endif
puts("Writing to Nand... ");
ret = nand_write(&nand_info[0], 0x0, &total, (u_char *) tmp);
total = CFG_ENV_SIZE;
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char *) env_ptr);
//#ifndef CONFIG_S5PC100_EVT1
if (ret || total != CFG_ENV_SIZE) {
free(tmp);
return 1;
}
//#endif
puts("done\n");
free(tmp);
return ret;
}
int saveenv_nand_adv(void)
{
#if defined(CONFIG_CMD_NAND)
size_t total;
int ret = 0;
u_char *tmp;
total = CONFIG_ENV_OFFSET;
tmp = (u_char *) malloc(total);
nand_read(&nand_info[0], 0x0, &total, (u_char *) tmp);
puts("Erasing Nand...");
nand_erase(&nand_info[0], 0x0, CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE);
if (nand_erase(&nand_info[0], 0x0, CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)) {
free(tmp);
return 1;
}
puts("Writing to Nand... ");
ret = nand_write(&nand_info[0], 0x0, &total, (u_char *) tmp);
total = CONFIG_ENV_SIZE;
ret = nand_write(&nand_info[0], CONFIG_ENV_OFFSET, &total, (u_char *) env_ptr);
if (ret || total != CONFIG_ENV_SIZE) {
free(tmp);
return 1;
}
puts("done\n");
free(tmp);
return ret;
#else
return 0;
#endif /* CONFIG_CMD_NAND */
}
/*****************************************************************************
* name : flash_erase_force
*
* description : Erase nand block force, even if it's bad.
*
* input : char *partition_name: partition to be erase
*
* other : No
*****************************************************************************/
void flash_erase_force(char *partition_name)
{
unsigned i = 0;
unsigned ret = ERROR;
unsigned block_start = 0;
unsigned block_end= 0;
struct nand_spec spec;
struct ptentry *ptn = NULL;
ret = nand_get_spec(&spec);
if(ret)
{
cprintf("ERROR: nand get spec failed!\n");
goto EXIT;
}
partition_name = bsp_nand_argument_check(partition_name);
if(NULL == partition_name)
{
cprintf("ERROR: no partition name!\n");
goto EXIT;
}
ptn = flash_find_ptn(partition_name);
if(!ptn)
{
cprintf("ERROR: wrong partition name: %s\n", partition_name);
goto EXIT;
}
/* coverity[uninit_use] */
block_start = (ptn->start + spec.blocksize- 1) / spec.blocksize;
block_end = (ptn->start + ptn->length + spec.blocksize - 1) / spec.blocksize;
for (i = block_start; i < block_end; i++)
{
ret = nand_erase(i);
if(ret)
{
cprintf("ERROR: nand erase error, block id = %d, ret = %d.\n", i, ret);
}
}
cprintf("Erase %s force finished!\n", partition_name);
return;
EXIT:
cprintf("ret = 0x%x!\n", ret);
return;
}
int main()
{
nand_init();
nand_erase(0x600000, 0x100000);
char *str = "jiangshen 123456789 haha";
nand_write((unsigned int)str, 0x600000, 2048);
nand_read((unsigned int)0x41000000, 0x600000, 2048);
return 0;
}
static int fastboot_data_part_wipe()
{
int ret = B_OK;
int err;
int index;
#ifdef MTK_NEW_COMBO_EMMC_SUPPORT
unsigned int part_id;
#endif
unsigned long long ptn;
unsigned long long size;
index = partition_get_index("userdata");
if (index == -1 || !is_support_erase(index))
{
ret = PART_GET_INDEX_FAIL;
return ret;
}
#ifdef MTK_NEW_COMBO_EMMC_SUPPORT
part_id = partition_get_region(index);
#endif
ptn = partition_get_offset(index);
size = partition_get_size(index);
set_env("unlock_erase", "start");
#ifdef MTK_EMMC_SUPPORT
#ifdef MTK_NEW_COMBO_EMMC_SUPPORT
err = emmc_erase(part_id, ptn, size);
#else
err = emmc_erase(ptn, size);
#endif
#else
err = nand_erase(ptn,(u64)size);
#endif
if (err)
{
ret = PART_ERASE_FAIL;
set_env("unlock_erase", "fail");
} else
{
ret = B_OK;
set_env("unlock_erase", "pass");
}
return ret;
}
int erase_test()
{
int blocknum = 0;
printf("Block # to erase: ");
scanf("%d",&blocknum);
printf("\r\n");
if(nand_erase(blocknum) == -1)
return -1;
printf("Block %d erase ok\r\n", blocknum);
return 0;
}
int sec_dev_write_wrapper(char *part_name, u64 offset, u8* data, u32 size)
{
part_dev_t *dev;
long len;
#ifdef MTK_EMMC_SUPPORT
#ifdef MTK_NEW_COMBO_EMMC_SUPPORT
part_t *part;
#endif
#endif
dev = mt_part_get_device();
if (!dev)
return PART_GET_DEV_FAIL;
#ifndef MTK_EMMC_SUPPORT
if(nand_erase(offset,(u64)size)!=0){
return PART_ERASE_FAIL;
}
#endif
#ifdef MTK_EMMC_SUPPORT
#ifdef MTK_NEW_COMBO_EMMC_SUPPORT
part = mt_part_get_partition(part_name);
if (!part){
dprintf(CRITICAL,"[write_wrapper] mt_part_get_partition error, name: %s\n", part_name);
ASSERT(0);
}
len = dev->write(dev, (uchar *) data, offset, size, part->part_id);
#else
len = dev->write(dev, (uchar *) data, offset, size);
#endif
#else
#ifdef MTK_NEW_COMBO_EMMC_SUPPORT
len = dev->write(dev, (uchar *) data, offset, size, NAND_PART_USER);
#else
len = dev->write(dev, (uchar *) data, offset, size);
#endif
#endif
if (len != (int)size)
{
return PART_WRITE_FAIL;
}
return B_OK;
}
static u16 vfl_remap_block(int bank, u16 block)
{
u16 newBlock = 0;
int newBlockIdx;
int i;
if(bank >= NANDGeometry->banksTotal || block >= NANDGeometry->blocksPerBank)
return 0;
LOG("ftl: attempting to remap bank %d, block %d\n", bank, block);
return 0;
// find a reserved block that is not being used
for(i = 0; i < pstVFLCxt[bank].totalReservedBlocks; ++i)
{
if(pstVFLCxt[bank].reservedBlockPoolMap[i] == 0)
{
newBlock = pstVFLCxt[bank].reservedBlockPoolStart + i;
newBlockIdx = i;
break;
}
}
// none found
if(newBlock == 0)
return 0;
// try to erase newly allocated reserved block nine times
for(i = 0; i < 9; ++i)
{
if(nand_erase(bank, newBlock) == 0)
break;
}
for(i = 0; i < newBlockIdx; ++i)
{
// mark any reserved block previously remapped for this block as bad
if(pstVFLCxt[bank].reservedBlockPoolMap[i] == block)
pstVFLCxt[bank].reservedBlockPoolMap[i] = 0xFFFF;
}
pstVFLCxt[bank].reservedBlockPoolMap[newBlockIdx] = block;
++pstVFLCxt[bank].numReservedBlocks;
vfl_set_good_block(bank, block, false);
return newBlock;
}
int saveenv(void)
{
int total, ret = 0;
puts ("Erasing Nand...");
if (nand_erase(nand_dev_desc + 0, CFG_ENV_OFFSET, CFG_ENV_SIZE, 0))
return 1;
puts ("Writing to Nand... ");
ret = nand_rw(nand_dev_desc + 0,
NANDRW_WRITE | NANDRW_JFFS2, CFG_ENV_OFFSET, CFG_ENV_SIZE,
&total, (u_char*)env_ptr);
if (ret || total != CFG_ENV_SIZE)
return 1;
puts ("done\n");
return ret;
}
// for sequential
void merge_switch(int log_pbn, int data_pbn)
{
//1. search & update pointers
//2. update BMT
int i;
for(i = 0; i< total_blk_num; i++){
if( BMT[i] == data_pbn ){
BMT[i] = log_pbn;
break;
}
}
ASSERT(i != total_blk_num);
//3. erase (data_pbn)
nand_erase(data_pbn);
}
/*
* The legacy NAND code saved the environment in the first NAND device i.e.,
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.
*/
#ifdef CFG_ENV_OFFSET_REDUND
int saveenv(void)
{
ulong total;
int ret = 0;
env_ptr->flags++;
total = CFG_ENV_SIZE;
if(gd->env_valid == 1) {
puts ("Erasing redundant Nand...");
if (nand_erase(&nand_info[0],
CFG_ENV_OFFSET_REDUND, CFG_ENV_SIZE))
return 1;
puts ("Writing to redundant Nand... ");
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
(u_char*) env_ptr);
} else {
puts ("Erasing Nand...");
if (nand_erase(&nand_info[0],
CFG_ENV_OFFSET, CFG_ENV_SIZE))
return 1;
puts ("Writing to Nand... ");
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total,
(u_char*) env_ptr);
}
if (ret || total != CFG_ENV_SIZE)
return 1;
puts ("done\n");
gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
return ret;
}
#else /* ! CFG_ENV_OFFSET_REDUND */
int saveenv(void)
{
ulong total;
int ret = 0;
puts ("Erasing Nand...");
if (nand_erase(&nand_info[0], CFG_ENV_OFFSET, CFG_ENV_SIZE))
return 1;
puts ("Writing to Nand... ");
total = CFG_ENV_SIZE;
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
if (ret || total != CFG_ENV_SIZE)
return 1;
puts ("done\n");
return ret;
}
void cmd_erase_nand(const char *arg, void *data, unsigned sz)
{
int index;
u64 offset,size;
char msg[256];
index = partition_get_index(arg);
if(index == -1){
fastboot_fail_wrapper("partition get index fail");
return;
}
if(!is_support_erase(index)){
sprintf(msg,"partition '%s' not support erase\n",arg);
fastboot_fail_wrapper(msg);
return;
}
offset = partition_get_offset(index);
if(offset == (u64)(-1)){
fastboot_fail_wrapper("partition get offset fail");
return;
}else{
printf("get offset: 0x%llx\n",offset);
}
size = partition_get_size(index);
if(size == (u64)(-1)){
fastboot_fail_wrapper("partition get size fail");
return;
}else{
printf("get size: 0x%llx\n",size);
}
TIME_START;
display_info("erase flash ....");
if(nand_erase(offset,size)!=0){
fastboot_fail_wrapper("failed to erase partition");
return;
}
fastboot_ok_wrapper("erase flash sucess",sz);
return;
}
/**
* 作用:nandc模块按分区名和分区偏移地址来擦除flash操作
*
* 参数:
* @partition_name ---要擦除的分区名
* @partition_offset ---要擦除的相对偏移地址
*
*
* 描述:根据分区名和分区的偏移地址来确定Flash的地址,再来擦除一个block,注意是擦除一个block数据块
*/
int bsp_nand_erase(const char *partition_name, u32 partition_offset)
{
u32 flash_addr;
u32 block_id, bad_flag;
u32 ret = NANDC_ERROR;
struct nandc_host * host = NULL;
struct ST_PART_TBL * ptable = find_partition_by_name(partition_name);
/*参数不正确*/
if(!ptable)
{
goto ERRO;
}
/*得到flash的地址信息*/
flash_addr = ptable->offset + partition_offset;
host = nandc_nand_host;
if(!host)
{
NAND_TRACE(("ERROR: function %s, line %d\n", __FUNCTION__, __LINE__));
goto ERRO;
}
/*得到块号并判断是否是坏块*/
block_id = flash_addr / host->nandchip->spec.blocksize;
ret = nand_isbad(block_id, &bad_flag);
if(ret)
{
NAND_TRACE(("ERROR: nand quary bad failed, function %s, line %d\n", __FUNCTION__, __LINE__));
goto ERRO;
}
if(NANDC_BAD_BLOCK == bad_flag)
{
NAND_TRACE(("ERROR: try to erase a bad block, function %s, line %d\n", __FUNCTION__, __LINE__));
goto ERRO;
}
/*擦除flash操作*/
return nand_erase(block_id);
ERRO:
return ret;
}
int main(int argc, char *argv[])
{
int i = 0;
char *p=(void *)0x52000000;
char *buf=(void *)0x51000000;
WTCON=0;
clock_init();
uart_init();
ddr_init();
nand_init();
memcpy(buf,"helloworld\n",12);
memset(p,0,12);
nand_erase(0x200000,12);
nand_write(buf,0x200000,12);
nand_read(p,0x200000,12);
uprintf(p);
uprintf("\n");
return 0;
}
static int warp_nand_bferase(int saveno)
{
int ret;
unsigned long off, end;
nand_info_t *nand = &nand_info[0];
off = warp_savearea[saveno].bootflag_area;
end = off + warp_savearea[saveno].bootflag_size;
printf("Warp!! bootflag clear NAND: 0x%08lx-0x%08lx\n", off, end - 1);
while (off < end) {
if (!nand_block_isbad(nand, off)) {
if ((ret = nand_erase(nand, off, nand->erasesize)) != 0) {
printf("bootflag erase error %d\n", ret);
return ret;
}
}
off += nand->erasesize;
}
return 0;
}
static int vfl_commit_cxt(int bank)
{
u32 cur;
u32 block;
if((pstVFLCxt[bank].nextcxtpage + 8) <= NANDGeometry->pagesPerBlock)
if(vfl_store_cxt(bank) == 0)
return 0;
cur = pstVFLCxt[bank].activecxtblock;
block = cur;
while(true)
{
int i;
block = (block + 1) % 4;
if(block == cur)
break;
// try to erase 4 times
for(i = 0; i < 4; ++i)
{
if(nand_erase(bank, pstVFLCxt[bank].VFLCxtBlock[block]) == 0)
break;
}
if(i == 4)
continue;
pstVFLCxt[bank].activecxtblock = block;
pstVFLCxt[bank].nextcxtpage = 0;
if(vfl_store_cxt(bank) == 0)
return 0;
}
LOG("ftl: failed to commit VFL context!\n");
return -1;
}
/*****************************************************************************
* name : flash_erase
*
* description : Erase nand block
*
* input : ptentry *ptn: partition to be erase
*
* return : NANDF_OK: erase OK
* NANDF_ERROR_INIT: Init failed
* NANDF_ERROR_ARGS: Input error
* NANDF_BAD_BLOCK: the block to be erase is a bad block
* NANDF_ERROR_ERASE: erase failed, and mark the block as a bad block
* NANDF_ERROR_ERASE_MARKBAD: erase failed, and mark bad block failed
* NANDF_ERROR_SEMTAKE: apply semphore failed
* NANDF_ERROR_SEMGIVE: release semphore failed
*
* other : No
*****************************************************************************/
int flash_erase(ptentry *ptn)
{
int ret = ERROR;
unsigned i = 0;
unsigned block_start = 0;
unsigned block_end= 0;
unsigned bad_flag;
struct nand_spec spec;
ret = nand_get_spec(&spec);
if(ret)
{
cprintf("ERROR: nand get spec failed!\n");
return ERROR;
}
/* coverity[uninit_use] */
block_start = (ptn->start + spec.blocksize- 1) / spec.blocksize;
block_end = (ptn->start + ptn->length + spec.blocksize - 1) / spec.blocksize;
for (i = block_start; i < block_end; i++)
{
ret = (s32)nand_isbad(i, &bad_flag);
if(NANDC_OK != ret || NANDC_BAD_BLOCK == bad_flag)
{
cprintf("block %d is bad, not erase, ret=%x\n", i, ret);
continue;
}
ret = (s32)nand_erase(i);
if(ret)
{
cprintf("erase block %d failed, ret=%x\n", i, ret);
}
}
return OK;
}
static int nand_burn_image(size_t image_size)
{
int ret, block_size;
nand_info_t *nand;
int dev = nand_curr_device;
if ((dev < 0) || (dev >= CONFIG_SYS_MAX_NAND_DEVICE) ||
(!nand_info[dev].name)) {
puts("\nno devices available\n");
return -ENOMEDIUM;
}
nand = &nand_info[dev];
block_size = nand->erasesize;
/* Align U-Boot size to currently used blocksize */
image_size = ((image_size + (block_size - 1)) & (~(block_size - 1)));
/* Erase the U-BOOT image space */
printf("Erasing 0x%x - 0x%x:...", 0, (int)image_size);
ret = nand_erase(nand, 0, image_size);
if (ret) {
printf("Error!\n");
goto error;
}
printf("Done!\n");
/* Write the image to flash */
printf("Writing image:...");
printf("&image_size = 0x%p\n", (void *)&image_size);
ret = nand_write(nand, 0, &image_size, (void *)get_load_addr());
if (ret)
printf("Error!\n");
else
printf("Done!\n");
error:
return ret;
}
u32t nand_write(u32t mem_add, u32t nand_add, u32t length){
u32t write_c = 0, i;
unsigned char *c = (unsigned char *)mem_add;
nand_erase(nand_add, length);
NAND_CHIP_ENABLE;
while (write_c < length) {
nand_reg->NFCMD = 0x80;
send_addr(nand_add + write_c);
for (i = 0; i < PAGE_SIZE && write_c < length;\
i++, write_c++) {
*(unsigned char volatile *)&nand_reg->NFDATA = c[write_c];
}
nand_reg->NFCMD = 0x10;
NAND_STATE_READY;
}
NAND_CHIP_DISABLE;
return write_c;
}