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Fri, 05 Mar 2021 14:23:15 -0800 (PST) From: Ilias Apalodimas To: xypron.glpk@gmx.de, takahiro.akashi@linaro.org Cc: Ilias Apalodimas , Alexander Graf , Sughosh Ganu , u-boot@lists.denx.de Subject: [PATCH 5/6] efidebug: add multiple device path instances on Boot#### Date: Sat, 6 Mar 2021 00:23:01 +0200 Message-Id: <20210305222303.2866284-5-ilias.apalodimas@linaro.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210305222303.2866284-1-ilias.apalodimas@linaro.org> References: <20210305222303.2866284-1-ilias.apalodimas@linaro.org> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de X-Virus-Status: Clean The UEFI spec allow a packed array of UEFI device paths in the FilePathList[] of an EFI_LOAD_OPTION. The first file path must describe the loaded image but the rest are OS specific. Previous patches parse the device path and try to use the second member of the array as an initrd. So let's modify efidebug slightly and install the second file described in the command line as the initrd device path. Signed-off-by: Ilias Apalodimas --- cmd/efidebug.c | 193 ++++++++++++++---- doc/board/emulation/qemu_capsule_update.rst | 4 +- doc/uefi/uefi.rst | 2 +- .../test_efi_capsule/test_capsule_firmware.py | 6 +- test/py/tests/test_efi_secboot/test_signed.py | 16 +- .../test_efi_secboot/test_signed_intca.py | 8 +- .../tests/test_efi_secboot/test_unsigned.py | 8 +- 7 files changed, 179 insertions(+), 58 deletions(-) diff --git a/cmd/efidebug.c b/cmd/efidebug.c index bbbcb0a54643..9a1c471a3eaa 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -9,6 +9,8 @@ #include #include #include +#include +#include #include #include #include @@ -19,6 +21,7 @@ #include #include #include +#include #define BS systab.boottime #define RT systab.runtime @@ -794,6 +797,65 @@ static int do_efi_show_tables(struct cmd_tbl *cmdtp, int flag, return CMD_RET_SUCCESS; } +/** + * add_initrd_instance() - Append a device path to load_options pointing to an + * inirtd + * + * @argc: Number of arguments + * @argv: Argument array + * @file_path Existing device path, the new instance will be appended + * Return: Pointer to the device path or ERR_PTR + * + */ +static +struct efi_device_path *add_initrd_instance(const char *dev, const char *part, + const char *file, + const struct efi_device_path *fp, + efi_uintn_t *fp_size) +{ + struct efi_device_path *tmp_dp = NULL, *tmp_fp = NULL; + struct efi_device_path *final_fp = NULL, *initrd_dp = NULL; + efi_status_t ret; + const struct efi_initrd_dp id_dp = { + .vendor = { + { + DEVICE_PATH_TYPE_MEDIA_DEVICE, + DEVICE_PATH_SUB_TYPE_VENDOR_PATH, + sizeof(id_dp.vendor), + }, + EFI_INITRD_MEDIA_GUID, + }, + .end = { + DEVICE_PATH_TYPE_END, + DEVICE_PATH_SUB_TYPE_END, + sizeof(id_dp.end), + } + }; + + ret = efi_dp_from_name(dev, part, file, &tmp_dp, &tmp_fp); + if (ret != EFI_SUCCESS) { + printf("Cannot create device path for \"%s %s\"\n", part, file); + goto out; + } + + initrd_dp = + efi_dp_append_instance((const struct efi_device_path *)&id_dp, + tmp_fp); + if (!initrd_dp) { + printf("Cannot append media vendor device path path\n"); + goto out; + } + final_fp = efi_dp_concat(fp, initrd_dp); + *fp_size = efi_dp_size(fp) + efi_dp_size(initrd_dp) + + (2 * sizeof(struct efi_device_path)); + +out: + efi_free_pool(initrd_dp); + efi_free_pool(tmp_dp); + efi_free_pool(tmp_fp); + return final_fp ? final_fp : ERR_PTR(-EINVAL); +} + /** * do_efi_boot_add() - set UEFI load option * @@ -806,7 +868,9 @@ static int do_efi_show_tables(struct cmd_tbl *cmdtp, int flag, * * Implement efidebug "boot add" sub-command. Create or change UEFI load option. * - * efidebug boot add