From: Marcel Ziswiler marcel.ziswiler@toradex.com
Various U-Boot adoptions/extensions to MTD/NAND/UBI did not take buffer alignment into account which led to failures of the following form:
ERROR: v7_dcache_inval_range - start address is not aligned - 0x1f7f0108 ERROR: v7_dcache_inval_range - stop address is not aligned - 0x1f7f1108
Signed-off-by: Marcel Ziswiler marcel.ziswiler@toradex.com Reviewed-by: Simon Glass sjg@chromium.org Acked-by: Scott Wood scottwood@freescale.com --- Changes in v5: split up into separate patches to be picked up by the various subsystem maintainers as suggested by Marek Changes in v4: move wrapper to common.h as suggested by Scott Changes in v3: introduce malloc_cache_aligned() as suggested by Scott Changes in v2: run it through checkpatch.pl and fix long lines
common/cmd_ubi.c | 2 +- drivers/mtd/nand/nand_util.c | 2 +- fs/ubifs/super.c | 5 +++-- fs/ubifs/ubifs.c | 4 ++-- include/common.h | 7 +++++++ lib/gzip.c | 2 +- 6 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/common/cmd_ubi.c b/common/cmd_ubi.c index cbc10c5..10eea65 100644 --- a/common/cmd_ubi.c +++ b/common/cmd_ubi.c @@ -363,7 +363,7 @@ int ubi_volume_read(char *volume, char *buf, size_t size) tbuf_size = vol->usable_leb_size; if (size < tbuf_size) tbuf_size = ALIGN(size, ubi->min_io_size); - tbuf = malloc(tbuf_size); + tbuf = malloc_cache_aligned(tbuf_size); if (!tbuf) { printf("NO MEM\n"); return ENOMEM; diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c index ee2c24d..21b4a61 100644 --- a/drivers/mtd/nand/nand_util.c +++ b/drivers/mtd/nand/nand_util.c @@ -839,7 +839,7 @@ int nand_torture(nand_info_t *nand, loff_t offset)
patt_count = ARRAY_SIZE(patterns);
- buf = malloc(nand->erasesize); + buf = malloc_cache_aligned(nand->erasesize); if (buf == NULL) { puts("Out of memory for erase block buffer\n"); return -ENOMEM; diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 10f8fff..0bf52db 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -57,7 +57,8 @@ struct inode *iget_locked(struct super_block *sb, unsigned long ino) { struct inode *inode;
- inode = (struct inode *)malloc(sizeof(struct ubifs_inode)); + inode = (struct inode *)malloc_cache_aligned( + sizeof(struct ubifs_inode)); if (inode) { inode->i_ino = ino; inode->i_sb = sb; @@ -104,7 +105,7 @@ void iput(struct inode *inode) /* * Allocate and use new inode */ - ino = (struct inode *)malloc(sizeof(struct ubifs_inode)); + ino = (struct inode *)malloc_cache_aligned(sizeof(struct ubifs_inode)); memcpy(ino, inode, sizeof(struct ubifs_inode));
/* diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c index 6dd6174..4daa7fa 100644 --- a/fs/ubifs/ubifs.c +++ b/fs/ubifs/ubifs.c @@ -108,7 +108,7 @@ static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name, struct crypto_comp *ptr; int i = 0;
- ptr = malloc(sizeof(struct crypto_comp)); + ptr = malloc_cache_aligned(sizeof(struct crypto_comp)); while (i < UBIFS_COMPR_TYPES_CNT) { comp = ubifs_compressors[i]; if (!comp) { @@ -723,7 +723,7 @@ static int do_readpage(struct ubifs_info *c, struct inode *inode, * destination area to a multiple of * UBIFS_BLOCK_SIZE. */ - buff = malloc(UBIFS_BLOCK_SIZE); + buff = malloc_cache_aligned(UBIFS_BLOCK_SIZE); if (!buff) { printf("%s: Error, malloc fails!\n", __func__); diff --git a/include/common.h b/include/common.h index 4566bd1..3f02e82 100644 --- a/include/common.h +++ b/include/common.h @@ -1010,6 +1010,13 @@ int cpu_release(int nr, int argc, char * const argv[]); #define DEFINE_CACHE_ALIGN_BUFFER(type, name, size) \ DEFINE_ALIGN_BUFFER(type, name, size, ARCH_DMA_MINALIGN)
+#include <malloc.h> + +static inline void *malloc_cache_aligned(size_t size) +{ + return memalign(ARCH_DMA_MINALIGN, ALIGN(size, ARCH_DMA_MINALIGN)); +} + /* * check_member() - Check the offset of a structure member * diff --git a/lib/gzip.c b/lib/gzip.c index ff37d4f..cd8e9fe 100644 --- a/lib/gzip.c +++ b/lib/gzip.c @@ -25,7 +25,7 @@ static void *zalloc(void *x, unsigned items, unsigned size) size *= items; size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
- p = malloc (size); + p = malloc_cache_aligned(size);
return (p); }