int cros_ec_decode_ec_flash(struct udevice *dev, struct fdt_cros_ec *config)
{
ofnode flash_node, node;
flash_node = dev_read_subnode(dev, "flash");
if (!ofnode_valid(flash_node)) {
debug("Failed to find flash node\n");
return -1;
}
if (ofnode_read_fmap_entry(flash_node, &config->flash)) {
debug("Failed to decode flash node in chrome-ec\n");
return -1;
}
config->flash_erase_value = ofnode_read_s32_default(flash_node,
"erase-value", -1);
ofnode_for_each_subnode(node, flash_node) {
const char *name = ofnode_get_name(node);
enum ec_flash_region region;
if (0 == strcmp(name, "ro")) {
region = EC_FLASH_REGION_RO;
} else if (0 == strcmp(name, "rw")) {
region = EC_FLASH_REGION_ACTIVE;
} else if (0 == strcmp(name, "wp-ro")) {
region = EC_FLASH_REGION_WP_RO;
} else {
debug("Unknown EC flash region name '%s'\n", name);
return -1;
}
if (ofnode_read_fmap_entry(node, &config->region[region])) {
debug("Failed to decode flash region in chrome-ec'\n");
return -1;
}
}
return 0;
}
int ofnode_read_fmap_entry(ofnode node, struct fmap_entry *entry)
{
const char *prop;
u32 reg[2];
if (ofnode_read_u32_array(node, "reg", reg, 2)) {
debug("Node '%s' has bad/missing 'reg' property\n",
ofnode_get_name(node));
return -log_ret(ENOENT);
}
entry->offset = reg[0];
entry->length = reg[1];
entry->used = ofnode_read_s32_default(node, "used", entry->length);
prop = ofnode_read_string(node, "compress");
entry->compress_algo = prop && !strcmp(prop, "lzo") ?
FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
prop = ofnode_read_string(node, "hash");
if (prop)
entry->hash_size = strlen(prop);
entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
entry->hash = (uint8_t *)prop;
return 0;
}
