rp cyw43 firmware flashing and from_raw_parts len parameter

[kolbma]

I'm wondering how you calculate 230_321 and 4_752 for the len parameter?

embassy/tests/rp/src/bin/cyw43-perf.rs

Lines 48 to 52 in 80cb2bc

	// cyw43 firmware needs to be flashed manually:
	// probe-rs download 43439A0.bin --binary-format bin --chip RP2040 --base-address 0x101b0000
	// probe-rs download 43439A0_clm.bin --binary-format bin --chip RP2040 --base-address 0x101f8000
	let fw = unsafe { core::slice::from_raw_parts(0x101b0000 as *const u8, 230321) };
	let clm = unsafe { core::slice::from_raw_parts(0x101f8000 as *const u8, 4752) };

  File: cyw43-firmware/43439A0.bin
  Size: 231077    	Blocks: 456        IO Block: 4096   regular file

  File: cyw43-firmware/43439A0_clm.bin
  Size: 984       	Blocks: 8          IO Block: 4096   regular file

And maybe would you be so kind and explain the address usage?

Wouldn't it makes more sense to use 0x101c_0000 and 0x101f_b000 depending on the original len values?
And moving it up more if clm len doesn't need 4752 but based on the size something like 1024?!