From: Keith Packard <keithp@keithp.com>
Date: Wed, 29 Aug 2012 01:02:25 +0000 (-0700)
Subject: ao-stmload: Always round up load amount to 4 byte boundary
X-Git-Tag: 1.1~64
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=ac5d053e6d766d243b7a425ae19779810c350125

ao-stmload: Always round up load amount to 4 byte boundary

The flashing code doesn't deal with partial writes.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/ao-tools/ao-stmload/ao-stmload.c b/ao-tools/ao-stmload/ao-stmload.c
index e689539b..a471dcc4 100644
--- a/ao-tools/ao-stmload/ao-stmload.c
+++ b/ao-tools/ao-stmload/ao-stmload.c
@@ -112,10 +112,17 @@ struct load {
 	uint8_t		buf[0];
 };
 
+uint32_t round4(uint32_t a) {
+	return (a + 3) & ~3;
+}
+
 struct load *
 new_load (uint32_t addr, uint32_t len)
 {
-	struct load *new = calloc (1, sizeof (struct load) + len);
+	struct load *new;
+
+	len = round4(len);
+	new = calloc (1, sizeof (struct load) + len);
 	if (!new)
 		abort();