Received: by 2002:a25:1506:0:0:0:0:0 with SMTP id 6csp3898705ybv; Mon, 10 Feb 2020 08:25:31 -0800 (PST) X-Google-Smtp-Source: APXvYqz1W+0aUcM5lWKTQCnE/d3wrofoMaSq04SFqSeRTt0Op125P/icxz1lksK4CsABxCKd23Sw X-Received: by 2002:a9d:63d6:: with SMTP id e22mr1691893otl.72.1581351931478; Mon, 10 Feb 2020 08:25:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1581351931; cv=none; d=google.com; s=arc-20160816; b=IlZGs2IRftKlu23ZhVSFFR9E7SQ9wJyDHILccImRB4uEL8lAJee+w6ZlchBeFFQ/Hb HeOT4xzFs2hNP22rDcMlc79LmpOnaEs5ac+bDapD6xQPTiXqsGAGHhJEKStJ4EClMefX mdljUQw792CEjFNOgJhZv/2Wvx8Vs8mvb2sb2RbanlSMRlmFD6tK5M+b2C8Yp4kLD8rY Te93VhgXw/v8PQ7n7Nhp4NurJRhYryKQzI+5Rjqmyy0bOk6Lv6MXSWX5rih86JyP93Yk Q918LM0yMV5K26jW5jMK/sCAj/hSmuFRz2aTrvUjI7zZwg+zpD5jgSZfLEEqLp6kqj6v ZkTg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature:dkim-filter; bh=RcNcqng5oNynrFpE7ZdCq7W2piKnsGZfBf751LVZK+c=; b=NTmtyjCmcVI+XxYwv3xAtP23g2Kt1QVYRWmtdLxy3Z8ihgEb0TVDeaMIwCUDyVAfMD O4JvI8QLt27Y81rwUdXiw+IZ1djXSoQtzpmrkxUePDD/0UZmMtorj9T5/ayt5uqdE7yk 4znbMJYmWgP72f/uZRBeXNvL5W4fLpG3hRLnbjrdvzuerZa2XhZr/SMD0uw9LGe7pSZg tVt6Xumfgn/9yvM1m7ysFYW3tLvcdilmUSl4rD6k6aT3z0rY8unuutGiJVBHCZAAzmFz cfGZEELwQ+ef8mrNzTtVz+9PEY0IqFQtajKPWI2k8QrpwqrAOq/+8SzcIbjv/MjDjzK0 kzHw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kalray.eu header.s=32AE1B44-9502-11E5-BA35-3734643DEF29 header.b=M8Wz8UX2; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=kalray.eu Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id m19si416703otq.40.2020.02.10.08.25.20; Mon, 10 Feb 2020 08:25:31 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kalray.eu header.s=32AE1B44-9502-11E5-BA35-3734643DEF29 header.b=M8Wz8UX2; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=kalray.eu Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728010AbgBJQYF (ORCPT + 99 others); Mon, 10 Feb 2020 11:24:05 -0500 Received: from zimbra2.kalray.eu ([92.103.151.219]:58830 "EHLO zimbra2.kalray.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727924AbgBJQYB (ORCPT ); Mon, 10 Feb 2020 11:24:01 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra2.kalray.eu (Postfix) with ESMTP id 5646727E080F; Mon, 10 Feb 2020 17:23:59 +0100 (CET) Received: from zimbra2.kalray.eu ([127.0.0.1]) by localhost (zimbra2.kalray.eu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id jehR5sNj0j3y; Mon, 10 Feb 2020 17:23:58 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zimbra2.kalray.eu (Postfix) with ESMTP id 9793627E081F; Mon, 10 Feb 2020 17:23:58 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.10.3 zimbra2.kalray.eu 9793627E081F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kalray.eu; s=32AE1B44-9502-11E5-BA35-3734643DEF29; t=1581351838; bh=RcNcqng5oNynrFpE7ZdCq7W2piKnsGZfBf751LVZK+c=; h=From:To:Date:Message-Id; b=M8Wz8UX2JB0+Xt0gGdK68tlfBixSLCflBPKVuM3grvZc8dUD7DjbtlEFhRRGRujG+ icQ852aXve3G2MaEHNymif/CYzZ3E1t92vOR3Vev4E7d3m5tpVmLiP2UMD2WgB2aYq qby0AkWJ+5gkVD89m3orj4EJ3zN7UQrm9DBm9aO8= X-Virus-Scanned: amavisd-new at zimbra2.kalray.eu Received: from zimbra2.kalray.eu ([127.0.0.1]) by localhost (zimbra2.kalray.eu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id hXICKQfqn445; Mon, 10 Feb 2020 17:23:58 +0100 (CET) Received: from triton.lin.mbt.kalray.eu (unknown [192.168.37.25]) by zimbra2.kalray.eu (Postfix) with ESMTPSA id 7590727E07D3; Mon, 10 Feb 2020 17:23:58 +0100 (CET) From: Clement Leger To: Ohad Ben-Cohen , Bjorn Andersson , Jonathan Corbet , Shawn Guo , Sascha Hauer , linux-remoteproc@vger.kernel.org Cc: Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Andy Gross , Patrice Chotard , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Arnaud Pouliquen , Loic PALLARDY , s-anna , Mathieu Poirier , Clement Leger Subject: [PATCH v4 4/5] remoteproc: Add elf64 support in elf loader Date: Mon, 10 Feb 2020 17:22:08 +0100 Message-Id: <20200210162209.23149-5-cleger@kalray.eu> X-Mailer: git-send-email 2.15.0.276.g89ea799 In-Reply-To: <20200210162209.23149-1-cleger@kalray.eu> References: <527785289.2852303.1581062223707.JavaMail.zimbra@kalray.eu> <20200210162209.23149-1-cleger@kalray.eu> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to support elf64, use macros from remoteproc_elf_helpers.h to access elf headers depending on elf class. Signed-off-by: Clement Leger Tested-by: Arnaud POULIQUEN --- Documentation/remoteproc.txt | 2 +- drivers/remoteproc/remoteproc_elf_loader.c | 145 ++++++++++++++++++----------- 2 files changed, 93 insertions(+), 54 deletions(-) diff --git a/Documentation/remoteproc.txt b/Documentation/remoteproc.txt index 03c3d2e568b0..2be1147256e0 100644 --- a/Documentation/remoteproc.txt +++ b/Documentation/remoteproc.txt @@ -230,7 +230,7 @@ in the used rings. Binary Firmware Structure ========================= -At this point remoteproc only supports ELF32 firmware binaries. However, +At this point remoteproc supports ELF32 and ELF64 firmware binaries. However, it is quite expected that other platforms/devices which we'd want to support with this framework will be based on different binary formats. diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c index c2a9783cfb9a..2ffb02a2ee36 100644 --- a/drivers/remoteproc/remoteproc_elf_loader.c +++ b/drivers/remoteproc/remoteproc_elf_loader.c @@ -23,6 +23,7 @@ #include #include "remoteproc_internal.h" +#include "remoteproc_elf_helpers.h" /** * rproc_elf_sanity_check() - Sanity Check ELF firmware image @@ -35,8 +36,16 @@ int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw) { const char *name = rproc->firmware; struct device *dev = &rproc->dev; + /* + * Elf files are beginning with the same structure. Thus, to simplify + * header parsing, we can use the elf32_hdr one for both elf64 and + * elf32. + */ struct elf32_hdr *ehdr; + u32 elf_shdr_get_size; + u64 phoff, shoff; char class; + u16 phnum; if (!fw) { dev_err(dev, "failed to load %s\n", name); @@ -50,13 +59,22 @@ int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw) ehdr = (struct elf32_hdr *)fw->data; - /* We only support ELF32 at this point */ + if (memcmp(ehdr->e_ident, ELFMAG, SELFMAG)) { + dev_err(dev, "Image is corrupted (bad magic)\n"); + return -EINVAL; + } + class = ehdr->e_ident[EI_CLASS]; - if (class != ELFCLASS32) { + if (class != ELFCLASS32 && class != ELFCLASS64) { dev_err(dev, "Unsupported class: %d\n", class); return -EINVAL; } + if (class == ELFCLASS64 && fw->size < sizeof(struct elf64_hdr)) { + dev_err(dev, "elf64 header is too small\n"); + return -EINVAL; + } + /* We assume the firmware has the same endianness as the host */ # ifdef __LITTLE_ENDIAN if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB) { @@ -67,26 +85,29 @@ int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw) return -EINVAL; } - if (fw->size < ehdr->e_shoff + sizeof(struct elf32_shdr)) { - dev_err(dev, "Image is too small\n"); - return -EINVAL; - } + phoff = elf_hdr_get_e_phoff(class, fw->data); + shoff = elf_hdr_get_e_shoff(class, fw->data); + phnum = elf_hdr_get_e_phnum(class, fw->data); + elf_shdr_get_size = elf_size_of_shdr(class); - if (memcmp(ehdr->e_ident, ELFMAG, SELFMAG)) { - dev_err(dev, "Image is corrupted (bad magic)\n"); + if (fw->size < shoff + elf_shdr_get_size) { + dev_err(dev, "Image is too small\n"); return -EINVAL; } - if (ehdr->e_phnum == 0) { + if (phnum == 0) { dev_err(dev, "No loadable segments\n"); return -EINVAL; } - if (ehdr->e_phoff > fw->size) { + if (phoff > fw->size) { dev_err(dev, "Firmware size is too small\n"); return -EINVAL; } + dev_dbg(dev, "Firmware is an elf%d file\n", + class == ELFCLASS32 ? 32 : 64); + return 0; } EXPORT_SYMBOL(rproc_elf_sanity_check); @@ -104,9 +125,7 @@ EXPORT_SYMBOL(rproc_elf_sanity_check); */ u64 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw) { - struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data; - - return ehdr->e_entry; + return elf_hdr_get_e_entry(fw_elf_get_class(fw), fw->data); } EXPORT_SYMBOL(rproc_elf_get_boot_addr); @@ -137,37 +156,41 @@ EXPORT_SYMBOL(rproc_elf_get_boot_addr); int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw) { struct device *dev = &rproc->dev; - struct elf32_hdr *ehdr; - struct elf32_phdr *phdr; + const void *ehdr, *phdr; int i, ret = 0; + u16 phnum; const u8 *elf_data = fw->data; + u8 class = fw_elf_get_class(fw); + u32 elf_phdr_get_size = elf_size_of_phdr(class); - ehdr = (struct elf32_hdr *)elf_data; - phdr = (struct elf32_phdr *)(elf_data + ehdr->e_phoff); + ehdr = elf_data; + phnum = elf_hdr_get_e_phnum(class, ehdr); + phdr = elf_data + elf_hdr_get_e_phoff(class, ehdr); /* go through the available ELF segments */ - for (i = 0; i < ehdr->e_phnum; i++, phdr++) { - u32 da = phdr->p_paddr; - u32 memsz = phdr->p_memsz; - u32 filesz = phdr->p_filesz; - u32 offset = phdr->p_offset; + for (i = 0; i < phnum; i++, phdr += elf_phdr_get_size) { + u64 da = elf_phdr_get_p_paddr(class, phdr); + u64 memsz = elf_phdr_get_p_memsz(class, phdr); + u64 filesz = elf_phdr_get_p_filesz(class, phdr); + u64 offset = elf_phdr_get_p_offset(class, phdr); + u32 type = elf_phdr_get_p_type(class, phdr); void *ptr; - if (phdr->p_type != PT_LOAD) + if (type != PT_LOAD) continue; - dev_dbg(dev, "phdr: type %d da 0x%x memsz 0x%x filesz 0x%x\n", - phdr->p_type, da, memsz, filesz); + dev_dbg(dev, "phdr: type %d da 0x%llx memsz 0x%llx filesz 0x%llx\n", + type, da, memsz, filesz); if (filesz > memsz) { - dev_err(dev, "bad phdr filesz 0x%x memsz 0x%x\n", + dev_err(dev, "bad phdr filesz 0x%llx memsz 0x%llx\n", filesz, memsz); ret = -EINVAL; break; } if (offset + filesz > fw->size) { - dev_err(dev, "truncated fw: need 0x%x avail 0x%zx\n", + dev_err(dev, "truncated fw: need 0x%llx avail 0x%zx\n", offset + filesz, fw->size); ret = -EINVAL; break; @@ -176,14 +199,15 @@ int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw) /* grab the kernel address for this device address */ ptr = rproc_da_to_va(rproc, da, memsz); if (!ptr) { - dev_err(dev, "bad phdr da 0x%x mem 0x%x\n", da, memsz); + dev_err(dev, "bad phdr da 0x%llx mem 0x%llx\n", da, + memsz); ret = -EINVAL; break; } /* put the segment where the remote processor expects it */ - if (phdr->p_filesz) - memcpy(ptr, elf_data + phdr->p_offset, filesz); + if (filesz) + memcpy(ptr, elf_data + offset, filesz); /* * Zero out remaining memory for this segment. @@ -200,24 +224,35 @@ int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw) } EXPORT_SYMBOL(rproc_elf_load_segments); -static struct elf32_shdr * -find_table(struct device *dev, struct elf32_hdr *ehdr, size_t fw_size) +static const void * +find_table(struct device *dev, const struct firmware *fw) { - struct elf32_shdr *shdr; + const void *shdr, *name_table_shdr; int i; const char *name_table; struct resource_table *table = NULL; - const u8 *elf_data = (void *)ehdr; + const u8 *elf_data = (void *)fw->data; + u8 class = fw_elf_get_class(fw); + size_t fw_size = fw->size; + const void *ehdr = elf_data; + u16 shnum = elf_hdr_get_e_shnum(class, ehdr); + u32 elf_shdr_get_size = elf_size_of_shdr(class); + u16 shstrndx = elf_hdr_get_e_shstrndx(class, ehdr); /* look for the resource table and handle it */ - shdr = (struct elf32_shdr *)(elf_data + ehdr->e_shoff); - name_table = elf_data + shdr[ehdr->e_shstrndx].sh_offset; - - for (i = 0; i < ehdr->e_shnum; i++, shdr++) { - u32 size = shdr->sh_size; - u32 offset = shdr->sh_offset; - - if (strcmp(name_table + shdr->sh_name, ".resource_table")) + /* First, get the section header according to the elf class */ + shdr = elf_data + elf_hdr_get_e_shoff(class, ehdr); + /* Compute name table section header entry in shdr array */ + name_table_shdr = shdr + (shstrndx * elf_shdr_get_size); + /* Finally, compute the name table section address in elf */ + name_table = elf_data + elf_shdr_get_sh_offset(class, name_table_shdr); + + for (i = 0; i < shnum; i++, shdr += elf_shdr_get_size) { + u64 size = elf_shdr_get_sh_size(class, shdr); + u64 offset = elf_shdr_get_sh_offset(class, shdr); + u32 name = elf_shdr_get_sh_name(class, shdr); + + if (strcmp(name_table + name, ".resource_table")) continue; table = (struct resource_table *)(elf_data + offset); @@ -270,21 +305,21 @@ find_table(struct device *dev, struct elf32_hdr *ehdr, size_t fw_size) */ int rproc_elf_load_rsc_table(struct rproc *rproc, const struct firmware *fw) { - struct elf32_hdr *ehdr; - struct elf32_shdr *shdr; + const void *shdr; struct device *dev = &rproc->dev; struct resource_table *table = NULL; const u8 *elf_data = fw->data; size_t tablesz; + u8 class = fw_elf_get_class(fw); + u64 sh_offset; - ehdr = (struct elf32_hdr *)elf_data; - - shdr = find_table(dev, ehdr, fw->size); + shdr = find_table(dev, fw); if (!shdr) return -EINVAL; - table = (struct resource_table *)(elf_data + shdr->sh_offset); - tablesz = shdr->sh_size; + sh_offset = elf_shdr_get_sh_offset(class, shdr); + table = (struct resource_table *)(elf_data + sh_offset); + tablesz = elf_shdr_get_sh_size(class, shdr); /* * Create a copy of the resource table. When a virtio device starts @@ -317,13 +352,17 @@ EXPORT_SYMBOL(rproc_elf_load_rsc_table); struct resource_table *rproc_elf_find_loaded_rsc_table(struct rproc *rproc, const struct firmware *fw) { - struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data; - struct elf32_shdr *shdr; + const void *shdr; + u64 sh_addr, sh_size; + u8 class = fw_elf_get_class(fw); - shdr = find_table(&rproc->dev, ehdr, fw->size); + shdr = find_table(&rproc->dev, fw); if (!shdr) return NULL; - return rproc_da_to_va(rproc, shdr->sh_addr, shdr->sh_size); + sh_addr = elf_shdr_get_sh_addr(class, shdr); + sh_size = elf_shdr_get_sh_size(class, shdr); + + return rproc_da_to_va(rproc, sh_addr, sh_size); } EXPORT_SYMBOL(rproc_elf_find_loaded_rsc_table); -- 2.15.0.276.g89ea799