sparc64: Increase size of boot string to 1024 bytes

This is the longest boot string that silo supports.

---
 arch/sparc/prom/bootstr_64.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

index ab9ccc6..4dac9f7 100644
@@ -14,7 +14,11 @@
  *          the .bss section or it will break things.
  */
 
-#define BARG_LEN  256
+/*
+ * We limit BARG_LEN to 1024 rather than use COMMAND_LINE_SIZE because silo
+ * blindly copies however many bytes we tell it from a 1024-byte array.
+ */
+#define BARG_LEN 1024
 struct {
 	int bootstr_len;
 	int bootstr_valid;

2.1.2

From: Dave Kleikamp <[email protected]>
Date: Tue, 07 Oct 2014 08:12:37 -0500

Ok, given how the rest of this thread went, the comment needs to be adjusted to match reality which is something like:

/* We limit BARG_LEN to 1024 because this is the size of the
* 'barg_out' command line buffer in the SILO bootloader. And
* it trusts bootstr_len over that buffer's size.
*/

Right?

I'd leave off the last sentence:

/* We limit BARG_LEN to 1024 because this is the size of the
* 'barg_out' command line buffer in the SILO bootloader. */

From: Dave Kleikamp <[email protected]>
Date: Tue, 07 Oct 2014 14:29:25 -0500

Works for me.