diff options
| author | Scott Branden <scott.branden@broadcom.com> | 2020-10-02 19:38:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-05 13:37:04 +0200 |
| commit | 59cdb23ca2dfef3b93411d1105409dfe9cd1f62f (patch) | |
| tree | f35af8f3da44a0edaa8b7517707e1b8098933b05 /drivers/base/firmware_loader/firmware.h | |
| parent | firmware: Store opt_flags in fw_priv (diff) | |
| download | linux-59cdb23ca2dfef3b93411d1105409dfe9cd1f62f.tar.xz linux-59cdb23ca2dfef3b93411d1105409dfe9cd1f62f.zip | |
firmware: Add request_partial_firmware_into_buf()
Add request_partial_firmware_into_buf() to allow for portions of a
firmware file to be read into a buffer. This is needed when large firmware
must be loaded in portions from a file on memory constrained systems.
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201002173828.2099543-16-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/firmware_loader/firmware.h')
| -rw-r--r-- | drivers/base/firmware_loader/firmware.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h index f86de5d7e0d7..63bd29fdcb9c 100644 --- a/drivers/base/firmware_loader/firmware.h +++ b/drivers/base/firmware_loader/firmware.h @@ -32,6 +32,8 @@ * @FW_OPT_FALLBACK_PLATFORM: Enable fallback to device fw copy embedded in * the platform's main firmware. If both this fallback and the sysfs * fallback are enabled, then this fallback will be tried first. + * @FW_OPT_PARTIAL: Allow partial read of firmware instead of needing to read + * entire file. */ enum fw_opt { FW_OPT_UEVENT = BIT(0), @@ -41,6 +43,7 @@ enum fw_opt { FW_OPT_NOCACHE = BIT(4), FW_OPT_NOFALLBACK_SYSFS = BIT(5), FW_OPT_FALLBACK_PLATFORM = BIT(6), + FW_OPT_PARTIAL = BIT(7), }; enum fw_status { @@ -68,6 +71,7 @@ struct fw_priv { void *data; size_t size; size_t allocated_size; + size_t offset; u32 opt_flags; #ifdef CONFIG_FW_LOADER_PAGED_BUF bool is_paged_buf; |