From: Steffen Trumtrar <s.trumt...@pengutronix.de>
At least bitstreams for FPGAs can consist of a lot of zeros depending on
device utilization. These bitstreams can be compressed very effectively.
Let the firmware code accept these images and decompress them before
handing it to the firmware-manager in question.
Signed-off-by: Steffen Trumtrar <s.trumt...@pengutronix.de>
---
common/firmware.c | 43 ++++++++++++++++++++++++++++++++++++++-----
1 file changed, 38 insertions(+), 5 deletions(-)
diff --git a/common/firmware.c b/common/firmware.c
index 58509d5da6..c617ecc0f1 100644
--- a/common/firmware.c
+++ b/common/firmware.c
@@ -14,6 +14,8 @@
#include <linux/list.h>
#include <linux/stat.h>
#include <linux/err.h>
+#include <uncompress.h>
+#include <filetype.h>
#define BUFSIZ 4096
@@ -211,12 +213,43 @@ out:
*/
int firmwaremgr_load_file(struct firmware_mgr *mgr, const char *firmware)
{
- int ret;
- char *name = basprintf("/dev/%s", mgr->handler->id);
-
- ret = copy_file(firmware, name, 0);
+ char *dst;
+ enum filetype type;
+ int ret = -ENOENT;
+ int srcfd = 0;
+ int dstfd = 0;
+
+ if (mgr->handler->id) {
+ dst = basprintf("/dev/%s", mgr->handler->id);
+ } else {
+ pr_err("id not defined for handler\n");
+ return -ENODEV;
+ }
- free(name);
+ if (firmware) {
+ type = file_name_detect_type(firmware);
+ if (type == filetype_unknown) {
+ ret = copy_file(firmware, dst, 0);
+ } else {
+ srcfd = open(firmware, O_RDONLY);
+ if (srcfd < 0)
+ return srcfd;
+ dstfd = open(dst, O_WRONLY | O_CREAT);
+
+ if (dstfd < 0) {
+ printf("could not open %s: %s\n", dst,
errno_str());
+ ret = dstfd;
+ goto out;
+ }
+
+ ret = uncompress_fd_to_fd(srcfd, dstfd,
uncompress_err_stdout);
+
+ close(dstfd);
+ }
+ }
+out:
+ close(srcfd);
+ free(dst);
return ret;
}
--
2.20.1
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