From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZFemO-0001SZ-1z for barebox@lists.infradead.org; Thu, 16 Jul 2015 08:44:33 +0000 From: Michael Olbrich Date: Thu, 16 Jul 2015 10:43:56 +0200 Message-Id: <1437036236-19096-8-git-send-email-m.olbrich@pengutronix.de> In-Reply-To: <1437036236-19096-1-git-send-email-m.olbrich@pengutronix.de> References: <1437036236-19096-1-git-send-email-m.olbrich@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 7/7] efi: write volatile EFI variables used by systemd To: barebox@lists.infradead.org Cc: Michael Olbrich LoaderTimeInitUSec and LoaderTimeExecUSec are used e.g. in systemd-analyze to calculate the time spent in the firmare and barebox. LoaderDevicePartUUID is used to mount the EFI partition to /boot. Signed-off-by: Michael Olbrich --- arch/efi/efi/efi-image.c | 5 +++++ arch/efi/efi/efi.c | 14 ++++++++++++++ common/efi-guid.c | 1 + include/efi.h | 5 +++++ 4 files changed, 25 insertions(+) diff --git a/arch/efi/efi/efi-image.c b/arch/efi/efi/efi-image.c index f41322744bbc..89b712baab1f 100644 --- a/arch/efi/efi/efi-image.c +++ b/arch/efi/efi/efi-image.c @@ -17,6 +17,7 @@ * */ +#include #include #include #include @@ -242,6 +243,10 @@ static int do_bootm_efi(struct image_data *data) boot_header->ramdisk_image); printf("...\n"); } + + efi_set_variable_usec("LoaderTimeExecUSec", &efi_systemd_vendor_guid, + get_time_ns()/1000); + linux_efi_handover(handle, boot_header); return 0; diff --git a/arch/efi/efi/efi.c b/arch/efi/efi/efi.c index b0e98f95b02b..a665a546be90 100644 --- a/arch/efi/efi/efi.c +++ b/arch/efi/efi/efi.c @@ -340,6 +340,7 @@ efi_status_t efi_main(efi_handle_t image, efi_system_table_t *sys_table) efi_physical_addr_t mem; size_t memsize; efi_status_t efiret; + char *uuid; #ifdef DEBUG sys_table->con_out->output_string(sys_table->con_out, L"barebox\n"); @@ -377,6 +378,19 @@ efi_status_t efi_main(efi_handle_t image, efi_system_table_t *sys_table) mem_malloc_init((void *)mem, (void *)mem + memsize); efi_clocksource_init(); + efi_set_variable_usec("LoaderTimeInitUSec", &efi_systemd_vendor_guid, + get_time_ns()/1000); + + uuid = device_path_to_partuuid(device_path_from_handle( + efi_loaded_image->device_handle)); + if (uuid) { + wchar_t *uuid16 = strdup_char_to_wchar(uuid); + efi_set_variable("LoaderDevicePartUUID", + &efi_systemd_vendor_guid, + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + uuid16, (strlen(uuid)+1) * sizeof(wchar_t)); + } start_barebox(); diff --git a/common/efi-guid.c b/common/efi-guid.c index f6b040410522..f4ff7feadfe4 100644 --- a/common/efi-guid.c +++ b/common/efi-guid.c @@ -9,6 +9,7 @@ efi_guid_t efi_unknown_device_guid = EFI_UNKNOWN_DEVICE_GUID; efi_guid_t efi_null_guid = EFI_NULL_GUID; efi_guid_t efi_global_variable_guid = EFI_GLOBAL_VARIABLE_GUID; efi_guid_t efi_block_io_protocol_guid = EFI_BLOCK_IO_PROTOCOL_GUID; +efi_guid_t efi_systemd_vendor_guid = EFI_SYSTEMD_VENDOR_GUID; #define EFI_GUID_STRING(guid, short, long) do { \ if (!efi_guidcmp(guid, *g)) \ diff --git a/include/efi.h b/include/efi.h index 830e0457dd1c..5b0de119fb74 100644 --- a/include/efi.h +++ b/include/efi.h @@ -473,6 +473,10 @@ extern efi_runtime_services_t *RT; #define EFI_BAREBOX_VENDOR_GUID \ EFI_GUID(0x5b91f69c, 0x8b88, 0x4a2b, 0x92, 0x69, 0x5f, 0x1d, 0x80, 0x2b, 0x51, 0x75) +/* for systemd */ +#define EFI_SYSTEMD_VENDOR_GUID \ + EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) + extern efi_guid_t efi_file_info_id; extern efi_guid_t efi_simple_file_system_protocol_guid; extern efi_guid_t efi_device_path_protocol_guid; @@ -481,6 +485,7 @@ extern efi_guid_t efi_unknown_device_guid; extern efi_guid_t efi_null_guid; extern efi_guid_t efi_global_variable_guid; extern efi_guid_t efi_block_io_protocol_guid; +extern efi_guid_t efi_systemd_vendor_guid; #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) -- 2.1.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox