Hello Rasmus,
On 24.10.24 14:27, Rasmus Villemoes wrote:
Loading flash.bin using uuu fails when flash.bin does not have the right size.
When flash.bin is loaded from some storage medium (sd card/emmc), SPL just loads some random garbage bytes from beyond what has been populated when flash.bin was written, but when loaded via uuu, SPL hangs waiting for the host to send the expected number of bytes. Which is (size of FIT image aligned to 0x1000)+CONFIG_CSF_SIZE. The alignment to 0x1000 is already done and is necessary in all cases because that's the exact expected location of the 32 byte IVT header. But the IVT+CSF blob tacked onto the end must be a total of CONFIG_CSF_SIZE.
This is exactly the same fix as 89f19f45d650, except that this time around I don't know how to cleanly get CONFIG_CSF_SIZE.
Fixes: bc6beae7c55f (binman: Add nxp_imx8mcst etype for i.MX8M flash.bin signing) Signed-off-by: Rasmus Villemoes ravi@prevas.dk
Heiko, can you check if this works for you?
Works fine for me, thanks!
And if somebody wants to pick this up and knows how to get at CONFIG_ values, feel free to fix up and take authorship. But perhaps it's not really configurable at all; imx8mimage.c has the value 0x2000 hard-coded, so I don't think anything good could ever come from modifying CONFIG_CSF_SIZE. If so, the right fix is probably just to make that knob non-settable.
Hmm... I don not know if it is a fix value... added Simon, may he knows how to use a CONFIG_ option in buildman. If I find time, I will take a look...
bye, Heiko
tools/binman/etype/nxp_imx8mcst.py | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/binman/etype/nxp_imx8mcst.py b/tools/binman/etype/nxp_imx8mcst.py index 8221517b0c4..9a1974cc522 100644 --- a/tools/binman/etype/nxp_imx8mcst.py +++ b/tools/binman/etype/nxp_imx8mcst.py @@ -137,6 +137,8 @@ class Entry_nxp_imx8mcst(Entry_mkimage): args = ['-i', cfg_fname, '-o', output_fname] if self.cst.run_cmd(*args) is not None: outdata = tools.read_file(output_fname)
# fixme: 0x2000 should be CONFIG_CSF_SIZEoutdata += tools.get_bytes(0, 0x2000 - 0x20 - len(outdata)) return data + outdata else: # Bintool is missing; just use the input data as the output