This prevents the scenario where data cache is on and the device uses DMA to deploy data. In that case, it might not be possible to flush/invalidate data to RAM properly. The other option is to use bounce buffer, but that involves a lot of copying and therefore degrades performance rapidly. Therefore disallow this possibility of unaligned load address altogether if data cache is on.
Signed-off-by: Marek Vasut marex@denx.de Cc: Wolfgang Denk wd@denx.de --- common/cmd_ext2.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/common/cmd_ext2.c b/common/cmd_ext2.c index 79b1e2f..45b5a0c 100644 --- a/common/cmd_ext2.c +++ b/common/cmd_ext2.c @@ -166,6 +166,9 @@ int do_ext2load (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return CMD_RET_USAGE; }
+ if (!cacheline_aligned(addr)) + return 1; + if (!filename) { puts ("** No boot file defined **\n"); return 1;