diff --git a/blflash/src/chip/bl602/cfg/ro_params.dtb b/blflash/src/chip/bl602/cfg/ro_params.dtb
new file mode 100644
index 0000000..1aeeacb
Binary files /dev/null and b/blflash/src/chip/bl602/cfg/ro_params.dtb differ
diff --git a/blflash/src/chip/bl602/mod.rs b/blflash/src/chip/bl602/mod.rs
index be6abcd..2e703f3 100644
--- a/blflash/src/chip/bl602/mod.rs
+++ b/blflash/src/chip/bl602/mod.rs
@@ -4,6 +4,7 @@ use deku::prelude::*;
 
 pub const DEFAULT_PARTITION_CFG: &'static [u8] = include_bytes!("cfg/partition_cfg_2M.toml");
 pub const DEFAULT_BOOTHEADER_CFG: &'static [u8] = include_bytes!("cfg/efuse_bootheader_cfg.conf");
+pub const RO_PARAMS: &'static [u8] = include_bytes!("cfg/ro_params.dtb");
 pub const BLSP_BOOT2: &'static [u8] = include_bytes!("image/blsp_boot2.bin");
 pub const EFLASH_LOADER: &'static [u8] = include_bytes!("image/eflash_loader_40m.bin");
 const ROM_START: u32 = 0x23000000;
@@ -28,17 +29,17 @@ impl Bl602 {
 
         let boot2image = bootheader_cfg.make_image(0x2000, Vec::from(BLSP_BOOT2))?;
         let fw_image = bootheader_cfg.make_image(0x1000, Vec::from(bin))?;
-        log::trace!("{}", hex::encode(&boot2image[0..200]));
 
-        let _segments = vec![
+        let segments = vec![
             RomSegment::from_vec(0x0, boot2image),
             RomSegment::from_vec(0xe000, partition_cfg.clone()),
             RomSegment::from_vec(0xf000, partition_cfg),
-            RomSegment::from_vec(0x10000, fw_image.clone()),
-            // FlashSegment::from_slice(0x1f8000, &d),
+            RomSegment::from_vec(0x10000, fw_image),
+            // TODO: generate from dts
+            RomSegment::from_slice(0x1f8000, RO_PARAMS),
         ];
 
-        todo!()
+        Ok(segments)
     }
 }
 
diff --git a/blflash/src/elf.rs b/blflash/src/elf.rs
index aed5205..4fba5d3 100644
--- a/blflash/src/elf.rs
+++ b/blflash/src/elf.rs
@@ -96,6 +96,12 @@ impl<'a> RomSegment<'a> {
             data: Cow::Owned(data),
         }
     }
+    pub fn from_slice(addr: u32, data: &'a [u8]) -> RomSegment<'a> {
+        RomSegment {
+            addr,
+            data: Cow::Borrowed(data),
+        }
+    }
     pub fn from_code_segment(addr: u32, code_segment: CodeSegment<'a>) -> RomSegment<'a>
     {
         Self {
diff --git a/blflash/src/main.rs b/blflash/src/main.rs
index d80f791..9516d29 100644
--- a/blflash/src/main.rs
+++ b/blflash/src/main.rs
@@ -16,8 +16,10 @@ struct FlashOpt {
     #[structopt(parse(from_os_str))]
     image: PathBuf,
     /// Path to partition_cfg.toml, default to be partition/partition_cfg_2M.toml
+    #[structopt(parse(from_os_str))]
     partition_cfg: Option<PathBuf>,
     /// Path to efuse_bootheader_cfg.conf
+    #[structopt(parse(from_os_str))]
     boot_header_cfg: Option<PathBuf>,
     /// With boot2
     #[structopt(short, long)]