app: fix payload size in bootstrap command

ziuziakowska · engdoreis · commit f43810fc35d4 · 2026-06-01T14:03:56.000+01:00
This was erroneously doubling the file size instead of rounding it up
to the nearest multiple of the flash page size.

Signed-off-by: Alice Ziuziakowska &lt;a.ziuziakowska@lowrisc.org&gt;
diff --git a/app/commands.hh b/app/commands.hh
@@ -218,7 +218,7 @@ struct LoadFile : public Commands<T> {
       std::println("File is empty");
       return 0;
     }
-    auto size = file_size + (file_size - file_size % flash::PageSize);
+    auto size = (file_size + flash::PageSize - 1) & ~(flash::PageSize - 1);
     std::vector<uint8_t> buffer(size, 0xff);
     if (!file.read(reinterpret_cast<char*>(buffer.data()), file_size)) {
       std::println("Error reading the file.");

Original file line number	Diff line number	Diff line change
`@@ -218,7 +218,7 @@ struct LoadFile : public Commands<T> {`
`218`	`218`	`std::println("File is empty");`
`219`	`219`	`return 0;`
`220`	`220`	`}`
`221`		`- auto size = file_size + (file_size - file_size % flash::PageSize);`
	`221`	`+ auto size = (file_size + flash::PageSize - 1) & ~(flash::PageSize - 1);`
`222`	`222`	`std::vector<uint8_t> buffer(size, 0xff);`
`223`	`223`	`if (!file.read(reinterpret_cast<char*>(buffer.data()), file_size)) {`
`224`	`224`	`std::println("Error reading the file.");`