From patchwork Tue Nov 15 21:47:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13044231 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C4ADC4332F for ; Tue, 15 Nov 2022 21:48:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231327AbiKOVst (ORCPT ); Tue, 15 Nov 2022 16:48:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39484 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231540AbiKOVsl (ORCPT ); Tue, 15 Nov 2022 16:48:41 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18CD1B1EF; Tue, 15 Nov 2022 13:48:41 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.94.2) (envelope-from ) id 1ov3nD-0005Jl-C3; Tue, 15 Nov 2022 22:48:31 +0100 Date: Tue, 15 Nov 2022 21:47:06 +0000 From: Daniel Golle To: Jens Axboe , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Matthew Wilcox , Daniel Golle , "Martin K. Petersen" , Chaitanya Kulkarni , Michal Orzel , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org Subject: [PATCH v5 3/4] partitions/efi: add support for uImage.FIT sub-partitions Message-ID: <7526fc5a461a0d68eb1dab575f9c1950638fc21a.1668548123.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add new GUID allowing to parse uImage.FIT stored in a GPT partition and map filesystem sub-image as sub-partitions. Signed-off-by: Daniel Golle --- block/partitions/efi.c | 9 +++++++++ block/partitions/efi.h | 3 +++ 2 files changed, 12 insertions(+) diff --git a/block/partitions/efi.c b/block/partitions/efi.c index 5e9be13a56a8..f4406b443f04 100644 --- a/block/partitions/efi.c +++ b/block/partitions/efi.c @@ -716,6 +716,9 @@ int efi_partition(struct parsed_partitions *state) gpt_entry *ptes = NULL; u32 i; unsigned ssz = queue_logical_block_size(state->disk->queue) / 512; +#ifdef CONFIG_FIT_PARTITION + u32 extra_slot = 65; +#endif if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) { kfree(gpt); @@ -749,6 +752,12 @@ int efi_partition(struct parsed_partitions *state) ARRAY_SIZE(ptes[i].partition_name)); utf16_le_to_7bit(ptes[i].partition_name, label_max, info->volname); state->parts[i + 1].has_info = true; + /* If this is a U-Boot FIT volume it may have subpartitions */ +#ifdef CONFIG_FIT_PARTITION + if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_FIT_GUID)) + (void) parse_fit_partitions(state, start * ssz, size * ssz, + &extra_slot, 127, 1); +#endif } kfree(ptes); kfree(gpt); diff --git a/block/partitions/efi.h b/block/partitions/efi.h index 84b9f36b9e47..06c11f6ae398 100644 --- a/block/partitions/efi.h +++ b/block/partitions/efi.h @@ -51,6 +51,9 @@ #define PARTITION_LINUX_LVM_GUID \ EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) +#define PARTITION_LINUX_FIT_GUID \ + EFI_GUID( 0xcae9be83, 0xb15f, 0x49cc, \ + 0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93) typedef struct _gpt_header { __le64 signature;