新代码并不总是在第一次尝试时就能成功。下面的实用程序函数可以转储通过 SCI 发送的请求，从而在控制台端口上提供一些可读的输出。

void J721E_dump_owner_req(struct tisci_msg_fwl_change_owner_info_req *req)
{
	uint32_t i = 0;

	SBL_log(SBL_LOG_ERR,"\n");
	SBL_log(SBL_LOG_ERR,"Ownership Request:\n");
	SBL_log(SBL_LOG_ERR,"req.fwl_id                = 0x%x\n",req->fwl_id);
	SBL_log(SBL_LOG_ERR,"req.owner_index    = 0x%x\n",req->owner_index);
	SBL_log(SBL_LOG_ERR,"req.region                = 0x%x\n",req->region);

	uint8_t *bPtr = (uint8_t *) req;
	for (i = 0; (i < sizeof(struct tisci_msg_fwl_change_owner_info_req)); i++)
	{
		SBL_log(SBL_LOG_ERR,"%02x ", bPtr[i]);
	}
	SBL_log(SBL_LOG_ERR,"\n");
	return;
}void J721E_dump_region_req(struct tisci_msg_fwl_set_firewall_region_req *req)
{
	uint32_t i = 0;
	uint32_t *startAddr;
	uint32_t *endAddr;

	startAddr = (uint32_t *) &req->start_address;
	endAddr = (uint32_t *) &req->end_address;

	SBL_log(SBL_LOG_ERR,"\n");
	SBL_log(SBL_LOG_ERR,"Region Set Request:\n");
	SBL_log(SBL_LOG_ERR,"req.fwl_id            = %d\n",   req->fwl_id);
	SBL_log(SBL_LOG_ERR,"req.region            = %d\n",   req->region);
	SBL_log(SBL_LOG_ERR,"req.control           = 0x%x\n", req->control);
	SBL_log(SBL_LOG_ERR,"req.start_address     = 0x%x%x\n", startAddr[1], startAddr[0]);
	SBL_log(SBL_LOG_ERR,"req.end_address       = 0x%x%x\n", endAddr[1], endAddr[0]);
	SBL_log(SBL_LOG_ERR,"req.n_permission_regs = 0x%x\n", req->n_permission_regs);
	for(i = 0; i < req->n_permission_regs; i++)
	{
		SBL_log(SBL_LOG_ERR, "req.permissions[%d]    = 0x%x\n", i, req->permissions[0]);
	}
	SBL_log(SBL_LOG_ERR, "\n");
	return;
}