diff options
| author | Kees Cook <keescook@chromium.org> | 2020-07-24 14:36:22 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-25 12:05:20 +0200 |
| commit | 2d38dbf89a06d0f689daec9842c5d3295c49777f (patch) | |
| tree | 6e4cb410ff510c0530eedd0ad1c6049cb5a8943e /drivers | |
| parent | 90b109d50da09ddaa179732c01ccba7f759c125d (diff) | |
test_firmware: Test platform fw loading on non-EFI systems
On non-EFI systems, it wasn't possible to test the platform firmware
loader because it will have never set "checked_fw" during __init.
Instead, allow the test code to override this check. Additionally split
the declarations into a private header file so it there is greater
enforcement of the symbol visibility.
Fixes: 548193cba2a7 ("test_firmware: add support for firmware_request_platform")
Cc: stable@vger.kernel.org
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200724213640.389191-2-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/efi/embedded-firmware.c | 21 | ||||
| -rw-r--r-- | drivers/firmware/efi/embedded-firmware.h | 19 |
2 files changed, 35 insertions, 5 deletions
diff --git a/drivers/firmware/efi/embedded-firmware.c b/drivers/firmware/efi/embedded-firmware.c index a1b199de9006..0fb03cd0a5a2 100644 --- a/drivers/firmware/efi/embedded-firmware.c +++ b/drivers/firmware/efi/embedded-firmware.c @@ -14,11 +14,22 @@ #include <linux/vmalloc.h> #include <crypto/sha.h> +#include "embedded-firmware.h" + +#ifdef CONFIG_TEST_FIRMWARE +# define EFI_EMBEDDED_FW_VISIBILITY +#else +# define EFI_EMBEDDED_FW_VISIBILITY static +#endif + +EFI_EMBEDDED_FW_VISIBILITY LIST_HEAD(efi_embedded_fw_list); +EFI_EMBEDDED_FW_VISIBILITY bool efi_embedded_fw_checked; + /* Exported for use by lib/test_firmware.c only */ -LIST_HEAD(efi_embedded_fw_list); +#ifdef CONFIG_TEST_FIRMWARE EXPORT_SYMBOL_GPL(efi_embedded_fw_list); - -static bool checked_for_fw; +EXPORT_SYMBOL_GPL(efi_embedded_fw_checked); +#endif static const struct dmi_system_id * const embedded_fw_table[] = { #ifdef CONFIG_TOUCHSCREEN_DMI @@ -119,14 +130,14 @@ void __init efi_check_for_embedded_firmwares(void) } } - checked_for_fw = true; + efi_embedded_fw_checked = true; } int efi_get_embedded_fw(const char *name, const u8 **data, size_t *size) { struct efi_embedded_fw *iter, *fw = NULL; - if (!checked_for_fw) { + if (!efi_embedded_fw_checked) { pr_warn("Warning %s called while we did not check for embedded fw\n", __func__); return -ENOENT; diff --git a/drivers/firmware/efi/embedded-firmware.h b/drivers/firmware/efi/embedded-firmware.h new file mode 100644 index 000000000000..34113316d068 --- /dev/null +++ b/drivers/firmware/efi/embedded-firmware.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _EFI_EMBEDDED_FW_INTERNAL_H_ +#define _EFI_EMBEDDED_FW_INTERNAL_H_ + +/* + * This struct and efi_embedded_fw_list are private to the efi-embedded fw + * implementation they only in separate header for use by lib/test_firmware.c. + */ +struct efi_embedded_fw { + struct list_head list; + const char *name; + const u8 *data; + size_t length; +}; + +extern struct list_head efi_embedded_fw_list; +extern bool efi_embedded_fw_checked; + +#endif /* _EFI_EMBEDDED_FW_INTERNAL_H_ */ |