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mx.microsoft.com 1; spf=pass smtp.mailfrom=suse.com; dmarc=pass action=none header.from=suse.com; dkim=pass header.d=suse.com; arc=none Authentication-Results: kernel.org; dkim=none (message not signed) header.d=none; kernel.org; dmarc=none action=none header.from=suse.com; Received: from VI1PR04MB4928.eurprd04.prod.outlook.com (2603:10a6:803:57::13) by VI1PR04MB5534.eurprd04.prod.outlook.com (2603:10a6:803:d2::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.16; Fri, 4 Sep 2020 07:29:41 +0000 Received: from VI1PR04MB4928.eurprd04.prod.outlook.com ([fe80::859b:fe60:4cfd:efa3]) by VI1PR04MB4928.eurprd04.prod.outlook.com ([fe80::859b:fe60:4cfd:efa3%2]) with mapi id 15.20.3348.016; Fri, 4 Sep 2020 07:29:41 +0000 From: Chester Lin To: ardb@kernel.org, catalin.marinas@arm.com, will@kernel.org, zohar@linux.ibm.com, dmitry.kasatkin@gmail.com, corbet@lwn.net, mark.rutland@arm.com, vincenzo.frascino@arm.com, samitolvanen@google.com, masahiroy@kernel.org, mingo@kernel.org CC: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, jlee@suse.com, clin@suse.com Subject: [PATCH 1/6] efistub: pass uefi secureboot flag via fdt params Date: Fri, 4 Sep 2020 15:29:00 +0800 Message-ID: <20200904072905.25332-2-clin@suse.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200904072905.25332-1-clin@suse.com> References: <20200904072905.25332-1-clin@suse.com> X-ClientProxiedBy: AM0PR02CA0073.eurprd02.prod.outlook.com (2603:10a6:208:154::14) To VI1PR04MB4928.eurprd04.prod.outlook.com (2603:10a6:803:57::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from linux-8mug.suse.de (114.24.10.103) by AM0PR02CA0073.eurprd02.prod.outlook.com (2603:10a6:208:154::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.15 via Frontend Transport; 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For example, the boot_params->secure_boot in x86. Signed-off-by: Chester Lin --- drivers/firmware/efi/libstub/fdt.c | 39 +++++++++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c index 11ecf3c4640e..c9a341e4715f 100644 --- a/drivers/firmware/efi/libstub/fdt.c +++ b/drivers/firmware/efi/libstub/fdt.c @@ -136,6 +136,10 @@ static efi_status_t update_fdt(void *orig_fdt, unsigned long orig_fdt_size, if (status) goto fdt_set_fail; + status = fdt_setprop_var(fdt, node, "linux,uefi-secure-boot", fdt_val32); + if (status) + goto fdt_set_fail; + if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) { efi_status_t efi_status; @@ -199,6 +203,24 @@ static efi_status_t update_fdt_memmap(void *fdt, struct efi_boot_memmap *map) return EFI_SUCCESS; } +static efi_status_t update_fdt_secboot(void *fdt, u32 secboot) +{ + int node = fdt_path_offset(fdt, "/chosen"); + u32 fdt_val32; + int err; + + if (node < 0) + return EFI_LOAD_ERROR; + + fdt_val32 = cpu_to_fdt32(secboot); + + err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-secure-boot", fdt_val32); + if (err) + return EFI_LOAD_ERROR; + + return EFI_SUCCESS; +} + struct exit_boot_struct { efi_memory_desc_t *runtime_map; int *runtime_entry_count; @@ -208,6 +230,9 @@ struct exit_boot_struct { static efi_status_t exit_boot_func(struct efi_boot_memmap *map, void *priv) { + efi_status_t status; + enum efi_secureboot_mode secboot_status; + u32 secboot_var = 0; struct exit_boot_struct *p = priv; /* * Update the memory map with virtual addresses. The function will also @@ -217,7 +242,19 @@ static efi_status_t exit_boot_func(struct efi_boot_memmap *map, efi_get_virtmap(*map->map, *map->map_size, *map->desc_size, p->runtime_map, p->runtime_entry_count); - return update_fdt_memmap(p->new_fdt_addr, map); + status = update_fdt_memmap(p->new_fdt_addr, map); + + if (status != EFI_SUCCESS) + return status; + + secboot_status = efi_get_secureboot(); + + if (secboot_status == efi_secureboot_mode_enabled) + secboot_var = 1; + + status = update_fdt_secboot(p->new_fdt_addr, secboot_var); + + return status; } #ifndef MAX_FDT_SIZE