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author | Steffen Trumtrar <s.trumtrar@pengutronix.de> | 2021-06-23 06:33:59 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-06-23 08:43:01 +0200 |
commit | 1cf6935dea364a193bc9f37c80a34046c311c9f7 (patch) | |
tree | 8cb4045e36c1cabb0ff69027099506b8bcddcb1e /common | |
parent | 20643843847c12c2a3689ee7be28f351132a20e0 (diff) | |
download | barebox-1cf6935dea364a193bc9f37c80a34046c311c9f7.tar.gz barebox-1cf6935dea364a193bc9f37c80a34046c311c9f7.tar.xz |
firmware: add support for compressed images
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.trumtrar@pengutronix.de>
Link: https://lore.barebox.org/20210616063246.14900-10-s.trumtrar@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.barebox.org/20210623043359.18391-4-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common')
-rw-r--r-- | common/firmware.c | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/common/firmware.c b/common/firmware.c index 58509d5da6..e4b5025ab1 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 +213,52 @@ out: */ int firmwaremgr_load_file(struct firmware_mgr *mgr, const char *firmware) { - int ret; - char *name = basprintf("/dev/%s", mgr->handler->id); + char *dst; + enum filetype type; + int ret = 0; + int firmwarefd = 0; + int devicefd = 0; + + if (!firmware) + return -EINVAL; + + if (!mgr->handler->id) { + pr_err("id not defined for handler\n"); + return -ENODEV; + } + + dst = basprintf("/dev/%s", mgr->handler->id); + + firmwarefd = open(firmware, O_RDONLY); + if (firmwarefd < 0) { + printf("could not open %s: %s\n", firmware, + errno_str()); + ret = firmwarefd; + goto out; + } - ret = copy_file(firmware, name, 0); + type = file_name_detect_type(firmware); + + devicefd = open(dst, O_WRONLY); + if (devicefd < 0) { + printf("could not open %s: %s\n", dst, errno_str()); + ret = devicefd; + goto out; + } + + if (file_is_compressed_file(type)) + ret = uncompress_fd_to_fd(firmwarefd, devicefd, + uncompress_err_stdout); + else + ret = copy_fd(firmwarefd, devicefd); + +out: + free(dst); - free(name); + if (firmwarefd > 0) + close(firmwarefd); + if (devicefd > 0) + close(devicefd); return ret; } |