static int fdt_offset(const void *fit)
{
int images, node, fdt_len, fdt_node, fdt_offset;
const char *fdt_name;
node = fit_find_config_node(fit);
if (node < 0)
return node;
images = fdt_path_offset(fit, FIT_IMAGES_PATH);
if (images < 0) {
debug("%s: Cannot find /images node: %d\n", __func__, images);
return -EINVAL;
}
fdt_name = fdt_getprop(fit, node, FIT_FDT_PROP, &fdt_len);
if (!fdt_name) {
debug("%s: Cannot find fdt name property: %d\n",
__func__, fdt_len);
return -EINVAL;
}
fdt_node = fdt_subnode_offset(fit, images, fdt_name);
if (fdt_node < 0) {
debug("%s: Cannot find fdt node '%s': %d\n",
__func__, fdt_name, fdt_node);
return -EINVAL;
}
fdt_offset = fdt_getprop_u32(fit, fdt_node, "data-offset");
if (fdt_offset == FDT_ERROR)
return -ENOENT;
fdt_len = fdt_getprop_u32(fit, fdt_node, "data-size");
if (fdt_len < 0)
return fdt_len;
return fdt_offset;
}
int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit)
{
int sectors;
ulong size, load;
unsigned long count;
int node, images;
void *load_ptr;
int fdt_offset, fdt_len;
int data_offset, data_size;
int base_offset;
int src_sector;
void *dst;
/*
* Figure out where the external images start. This is the base for the
* data-offset properties in each image.
*/
size = fdt_totalsize(fit);
size = (size + 3) & ~3;
base_offset = (size + 3) & ~3;
/*
* So far we only have one block of data from the FIT. Read the entire
* thing, including that first block, placing it so it finishes before
* where we will load the image.
*
* Note that we will load the image such that its first byte will be
* at the load address. Since that byte may be part-way through a
* block, we may load the image up to one block before the load
* address. So take account of that here by subtracting an addition
* block length from the FIT start position.
*
* In fact the FIT has its own load address, but we assume it cannot
* be before CONFIG_SYS_TEXT_BASE.
*/
fit = (void *)(CONFIG_SYS_TEXT_BASE - size - info->bl_len);
sectors = (size + info->bl_len - 1) / info->bl_len;
count = info->read(info, sector, sectors, fit);
debug("fit read sector %lx, sectors=%d, dst=%p, count=%lu\n",
sector, sectors, fit, count);
if (count == 0)
return -EIO;
/* find the firmware image to load */
images = fdt_path_offset(fit, FIT_IMAGES_PATH);
if (images < 0) {
debug("%s: Cannot find /images node: %d\n", __func__, images);
return -1;
}
node = fdt_first_subnode(fit, images);
if (node < 0) {
debug("%s: Cannot find first image node: %d\n", __func__, node);
return -1;
}
/* Get its information and set up the spl_image structure */
data_offset = fdt_getprop_u32(fit, node, "data-offset");
data_size = fdt_getprop_u32(fit, node, "data-size");
load = fdt_getprop_u32(fit, node, "load");
debug("data_offset=%x, data_size=%x\n", data_offset, data_size);
spl_image.load_addr = load;
spl_image.entry_point = load;
spl_image.os = IH_OS_U_BOOT;
/*
* Work out where to place the image. We read it so that the first
* byte will be at 'load'. This may mean we need to load it starting
* before then, since we can only read whole blocks.
*/
sectors = (data_size + info->bl_len - 1) / info->bl_len;
data_offset += base_offset;
load_ptr = (void *)load;
debug("U-Boot size %x, data %p\n", data_size, load_ptr);
dst = load_ptr - (data_offset % info->bl_len);
/* Read the image */
src_sector = sector + data_offset / info->bl_len;
debug("image: data_offset=%x, dst=%p, src_sector=%x, sectors=%x\n",
data_offset, dst, src_sector, sectors);
count = info->read(info, src_sector, sectors, dst);
if (count != sectors)
return -EIO;
/* Figure out which device tree the board wants to use */
fdt_len = spl_fit_select_fdt(fit, images, &fdt_offset);
if (fdt_len < 0)
return fdt_len;
/*
* Read the device tree and place it after the image. There may be
* some extra data before it since we can only read entire blocks.
*/
dst = load_ptr + data_size;
fdt_offset += base_offset;
count = info->read(info, sector + fdt_offset / info->bl_len, sectors,
dst);
debug("fit read %x sectors to %x, dst %p, data_offset %x\n",
sectors, spl_image.load_addr, dst, fdt_offset);
if (count != sectors)
return -EIO;
/*
* Copy the device tree so that it starts immediately after the image.
* After this we will have the U-Boot image and its device tree ready
* for us to start.
*/
memcpy(dst, dst + fdt_offset % info->bl_len, fdt_len);
return 0;
}
static int spl_fit_select_fdt(const void *fdt, int images, int *fdt_offsetp)
{
const char *name, *fdt_name;
int conf, node, fdt_node;
int len;
*fdt_offsetp = 0;
conf = fdt_path_offset(fdt, FIT_CONFS_PATH);
if (conf < 0) {
debug("%s: Cannot find /configurations node: %d\n", __func__,
conf);
return -EINVAL;
}
for (node = fdt_first_subnode(fdt, conf);
node >= 0;
node = fdt_next_subnode(fdt, node)) {
name = fdt_getprop(fdt, node, "description", &len);
if (!name) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("%s: Missing FDT description in DTB\n",
__func__);
#endif
return -EINVAL;
}
if (board_fit_config_name_match(name))
continue;
debug("Selecting config '%s'", name);
fdt_name = fdt_getprop(fdt, node, FIT_FDT_PROP, &len);
if (!fdt_name) {
debug("%s: Cannot find fdt name property: %d\n",
__func__, len);
return -EINVAL;
}
debug(", fdt '%s'\n", fdt_name);
fdt_node = fdt_subnode_offset(fdt, images, fdt_name);
if (fdt_node < 0) {
debug("%s: Cannot find fdt node '%s': %d\n",
__func__, fdt_name, fdt_node);
return -EINVAL;
}
*fdt_offsetp = fdt_getprop_u32(fdt, fdt_node, "data-offset");
len = fdt_getprop_u32(fdt, fdt_node, "data-size");
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("FIT: Selected '%s'\n", name);
#endif
return len;
}
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("No matching DT out of these options:\n");
for (node = fdt_first_subnode(fdt, conf);
node >= 0;
node = fdt_next_subnode(fdt, node)) {
name = fdt_getprop(fdt, node, "name", &len);
printf(" %s\n", name);
}
#endif
return -ENOENT;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
int sunxi_sprite_erase_flash(void *img_mbr_buffer)
{
uint32_t need_erase_flag = 0;
char buf[SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM];
//int ret;
int nodeoffset;
if(sunxi_sprite_erase(0, img_mbr_buffer) > 0)
{
printf("flash already erased\n");
return 0;
}
//获取擦除信息，查看是否需要擦除flash
//ret = script_parser_fetch("platform", "eraseflag", &need_erase_flag, 1);
nodeoffset = fdt_path_offset(working_fdt,FDT_PATH_PLATFORM);
if(nodeoffset > 0)
{
fdt_getprop_u32(working_fdt,nodeoffset,"eraseflag",&need_erase_flag);
}
if(need_erase_flag)
{
printf("do need erase flash\n");
}
else
{
printf("not need erase flash\n");
}
//当要求强制擦除，不处理私有数据
if(need_erase_flag == 0x11)
{
printf("force erase flash\n");
sunxi_sprite_erase(1, img_mbr_buffer);
return 0;
}
//检测不到private分区，即不用保护用户数据
if(!sunxi_sprite_probe_prvt(img_mbr_buffer))
{
printf("no part need to protect user data\n");
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
//当初始化失败的时候，直接擦除，不处理私有数据
if(sunxi_sprite_init(1))
{
debug("sunxi sprite pre init fail, we have to erase it\n");
sunxi_sprite_exit(1);
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
debug("nand pre init ok\n");
//读出量产介质上的MBR
if(!sunxi_sprite_read(0, (SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM)/512, buf))
{
printf("read local mbr on flash failed\n");
sunxi_sprite_exit(1);
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
//校验MBR
if(sunxi_sprite_verify_mbr(buf))
{
printf("the mbr on flash is bad\n");
sunxi_sprite_exit(1);
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
printf("begin to store data\n");
if(sunxi_sprite_store_part_data(buf) < 0)
{
sunxi_sprite_exit(1);
return -1;
}
sunxi_sprite_exit(1);
printf("need_erase_flag = %d\n", need_erase_flag);
//开始擦除
printf("begin to erase\n");
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
//开始回写private
printf("finish erase\n");
sunxi_sprite_init(0);
printf("rewrite\n");
if(sunxi_sprite_restore_part_data(img_mbr_buffer))
{
sunxi_sprite_exit(0);
return -1;
}
printf("flash exit\n");
sunxi_sprite_exit(0);
return 0;
}
/**
* spl_load_fit_image(): load the image described in a certain FIT node
* @info: points to information about the device to load data from
* @sector: the start sector of the FIT image on the device
* @fit: points to the flattened device tree blob describing the FIT
* image
* @base_offset: the beginning of the data area containing the actual
* image data, relative to the beginning of the FIT
* @node: offset of the DT node describing the image to load (relative
* to @fit)
* @image_info: will be filled with information about the loaded image
* If the FIT node does not contain a "load" (address) property,
* the image gets loaded to the address pointed to by the
* load_addr member in this struct.
*
* Return: 0 on success or a negative error number.
*/
static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
void *fit, ulong base_offset, int node,
struct spl_image_info *image_info)
{
int offset;
size_t length;
int len;
ulong size;
ulong load_addr, load_ptr;
void *src;
ulong overhead;
int nr_sectors;
int align_len = ARCH_DMA_MINALIGN - 1;
uint8_t image_comp = -1, type = -1;
const void *data;
if (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP)) {
if (fit_image_get_comp(fit, node, &image_comp))
puts("Cannot get image compression format.\n");
else
debug("%s ", genimg_get_comp_name(image_comp));
if (fit_image_get_type(fit, node, &type))
puts("Cannot get image type.\n");
else
debug("%s ", genimg_get_type_name(type));
}
if (fit_image_get_load(fit, node, &load_addr))
load_addr = image_info->load_addr;
if (!fit_image_get_data_offset(fit, node, &offset)) {
/* External data */
offset += base_offset;
if (fit_image_get_data_size(fit, node, &len))
return -ENOENT;
load_ptr = (load_addr + align_len) & ~align_len;
length = len;
overhead = get_aligned_image_overhead(info, offset);
nr_sectors = get_aligned_image_size(info, length, offset);
if (info->read(info,
sector + get_aligned_image_offset(info, offset),
nr_sectors, (void *)load_ptr) != nr_sectors)
return -EIO;
debug("External data: dst=%lx, offset=%x, size=%lx\n",
load_ptr, offset, (unsigned long)length);
src = (void *)load_ptr + overhead;
} else {
/* Embedded data */
if (fit_image_get_data(fit, node, &data, &length)) {
puts("Cannot get image data/size\n");
return -ENOENT;
}
debug("Embedded data: dst=%lx, size=%lx\n", load_addr,
(unsigned long)length);
src = (void *)data;
}
#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
board_fit_image_post_process(&src, &length);
#endif
if (IS_ENABLED(CONFIG_SPL_OS_BOOT) &&
IS_ENABLED(CONFIG_SPL_GZIP) &&
image_comp == IH_COMP_GZIP &&
type == IH_TYPE_KERNEL) {
size = length;
if (gunzip((void *)load_addr, CONFIG_SYS_BOOTM_LEN,
src, &size)) {
puts("Uncompressing error\n");
return -EIO;
}
length = size;
} else {
memcpy((void *)load_addr, src, length);
}
if (image_info) {
image_info->load_addr = load_addr;
image_info->size = length;
image_info->entry_point = fdt_getprop_u32(fit, node, "entry");
}
return 0;
}
/*
**********************************************************************************************************************
* i2c_init
*
* Description:
*
* Arguments :
*
* Returns : none
*
* Notes : none
*
**********************************************************************************************************************
*/
void i2c_init(int speed, int slaveaddr)
{
int i, clk_n, clk_m;
int i2c_nodeoffset;
/*set gpio and clock*/
#ifndef CONFIG_CPUS_I2C
i2c_nodeoffset = fdt_path_offset(working_fdt,"/soc/twi_para");
if(i2c_nodeoffset < 0)
{
printf("axp: get node[%s] error\n",PMU_SCRIPT_NAME);
return ;
}
//if(script_parser_fetch(PMU_SCRIPT_NAME, "pmu_pwron_vol", &vol_value, 1))
if(fdt_getprop_u32(working_fdt,i2c_nodeoffset,"twi_port", (uint32_t*)&bus_num)<0)
{
printf("can not get i2c bus num \n");
}
if(bus_num > SUNXI_I2C_CONTROLLER)
{
printf("can not support i2c bus num %d \n",bus_num);
return ;
}
set_i2c_clock();
if(0 != fdt_set_all_pin_by_offset(i2c_nodeoffset,"pinctrl-0"))
{
printf("set pin for i2c bus num %d error\n",bus_num);
return ;
}
i2c = (struct sunxi_twi_reg *)(SUNXI_TWI0_BASE + (bus_num * TWI_CONTROL_OFFSET));
#else
set_cpus_i2c_clock();
fdt_set_all_pin("/soc/s_twi0","pinctrl-0");
#endif
/* reset i2c control */
i = 0xffff;
i2c->srst = 1;
while((i2c->srst) && (i))
{
i --;
}
if((i2c->lcr & 0x30) != 0x30 )
{
/* toggle I2CSCL until bus idle */
i2c->lcr = 0x05;
__usdelay(500);
i = 10;
while ((i > 0) && ((i2c->lcr & 0x02) != 2))
{
i2c->lcr |= 0x08;
__usdelay(1000);
i2c->lcr &= ~0x08;
__usdelay(1000);
i--;
}
i2c->lcr = 0x0;
__usdelay(500);
}
if(speed < 100)
{
speed = 100;
}
else if(speed > 400)
{
speed = 400;
}
clk_n = 1;
clk_m = (24000/10)/((2^clk_n) * speed) - 1;
i2c->clk = (clk_m<<3) | clk_n;
i2c->ctl = 0x40;
i2c->eft = 0;
return ;
}