Root/target/linux/amazon/patches-3.3/160-cfi-swap.patch

1--- a/drivers/mtd/chips/cfi_cmdset_0002.c
2+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
3@@ -1152,6 +1152,9 @@ static int __xipram do_write_oneword(str
4     int retry_cnt = 0;
5 
6     adr += chip->start;
7+#ifdef CONFIG_AMAZON
8+ adr ^= 2;
9+#endif
10 
11     mutex_lock(&chip->mutex);
12     ret = get_chip(map, chip, adr, FL_WRITING);
13@@ -1420,7 +1423,11 @@ static int __xipram do_write_buffer(stru
14     z = 0;
15     while(z < words * map_bankwidth(map)) {
16         datum = map_word_load(map, buf);
17+#ifdef CONFIG_AMAZON
18+ map_write(map, datum, (adr + z) ^ 0x2);
19+#else
20         map_write(map, datum, adr + z);
21+#endif
22 
23         z += map_bankwidth(map);
24         buf += map_bankwidth(map);
25@@ -1665,6 +1672,9 @@ static int __xipram do_erase_oneblock(st
26     int ret = 0;
27 
28     adr += chip->start;
29+#ifdef CONFIG_AMAZON
30+ adr ^= 2;
31+#endif
32 
33     mutex_lock(&chip->mutex);
34     ret = get_chip(map, chip, adr, FL_ERASING);
35@@ -1793,6 +1803,10 @@ static int do_atmel_lock(struct map_info
36     struct cfi_private *cfi = map->fldrv_priv;
37     int ret;
38 
39+#ifdef CONFIG_AMAZON
40+ adr ^= 2;
41+#endif
42+
43     mutex_lock(&chip->mutex);
44     ret = get_chip(map, chip, adr + chip->start, FL_LOCKING);
45     if (ret)
46@@ -1828,6 +1842,10 @@ static int do_atmel_unlock(struct map_in
47     struct cfi_private *cfi = map->fldrv_priv;
48     int ret;
49 
50+#ifdef CONFIG_AMAZON
51+ adr ^= 2;
52+#endif
53+
54     mutex_lock(&chip->mutex);
55     ret = get_chip(map, chip, adr + chip->start, FL_UNLOCKING);
56     if (ret)
57

Archive Download this file



interactive