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[68.147.8.254]) by smtp.gmail.com with ESMTPSA id c1sm2723546pfc.94.2020.04.17.12.38.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Apr 2020 12:38:39 -0700 (PDT) Date: Fri, 17 Apr 2020 13:38:37 -0600 From: Mathieu Poirier To: Clement Leger Subject: Re: [PATCH 1/2] remoteproc: add rproc_coredump_set_elf_info Message-ID: <20200417193837.GB6797@xps15> References: <20200410102433.2672-1-cleger@kalray.eu> <20200410102433.2672-2-cleger@kalray.eu> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200410102433.2672-2-cleger@kalray.eu> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200417_123843_457850_9C0D589E X-CRM114-Status: GOOD ( 18.71 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ohad Ben-Cohen , Alexandre Torgue , linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson , Andy Gross , Maxime Coquelin , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Apr 10, 2020 at 12:24:32PM +0200, Clement Leger wrote: > This function allows drivers to correctly setup the coredump output > elf information. > > Signed-off-by: Clement Leger > --- > drivers/remoteproc/remoteproc_core.c | 32 ++++++++++++++++++++-- > drivers/remoteproc/remoteproc_elf_loader.c | 3 -- > include/linux/remoteproc.h | 2 ++ > 3 files changed, 32 insertions(+), 5 deletions(-) > > diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c > index a9ac1d01e09b..382443bab583 100644 > --- a/drivers/remoteproc/remoteproc_core.c > +++ b/drivers/remoteproc/remoteproc_core.c > @@ -1562,6 +1562,28 @@ int rproc_coredump_add_custom_segment(struct rproc *rproc, > } > EXPORT_SYMBOL(rproc_coredump_add_custom_segment); > > +/** > + * rproc_coredump_set_elf_info() - set coredump elf information > + * @rproc: handle of a remote processor > + * @class: elf class for coredump elf file > + * @size: elf machine for coredump elf file > + * > + * Set elf information which will be used for coredump elf file. > + * > + * Return: 0 on success, negative errno on error. > + */ > +int rproc_coredump_set_elf_info(struct rproc *rproc, u8 class, u16 machine) > +{ > + if (class != ELFCLASS64 && class != ELFCLASS32) > + return -EINVAL; > + > + rproc->elf_class = class; > + rproc->elf_machine = machine; > + > + return 0; > +} > +EXPORT_SYMBOL(rproc_coredump_set_elf_info); > + > /** > * rproc_coredump() - perform coredump > * @rproc: rproc handle > @@ -1584,6 +1606,11 @@ static void rproc_coredump(struct rproc *rproc) > if (list_empty(&rproc->dump_segments)) > return; > > + if (class == ELFCLASSNONE) { > + dev_err(&rproc->dev, "Elf class is not set\n"); > + return; > + } > + > data_size = elf_size_of_hdr(class); > list_for_each_entry(segment, &rproc->dump_segments, node) { > data_size += elf_size_of_phdr(class) + segment->size; > @@ -1602,7 +1629,7 @@ static void rproc_coredump(struct rproc *rproc) > elf_hdr_init_ident(ehdr, class); > > elf_hdr_set_e_type(class, ehdr, ET_CORE); > - elf_hdr_set_e_machine(class, ehdr, EM_NONE); > + elf_hdr_set_e_machine(class, ehdr, rproc->elf_machine); > elf_hdr_set_e_version(class, ehdr, EV_CURRENT); > elf_hdr_set_e_entry(class, ehdr, rproc->bootaddr); > elf_hdr_set_e_phoff(class, ehdr, elf_size_of_hdr(class)); > @@ -2043,7 +2070,8 @@ struct rproc *rproc_alloc(struct device *dev, const char *name, > rproc->name = name; > rproc->priv = &rproc[1]; > rproc->auto_boot = true; > - rproc->elf_class = ELFCLASS32; > + rproc->elf_class = ELFCLASSNONE; > + rproc->elf_machine = EM_NONE; > > device_initialize(&rproc->dev); > rproc->dev.parent = dev; > diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c > index 16e2c496fd45..4869fb7d8fe4 100644 > --- a/drivers/remoteproc/remoteproc_elf_loader.c > +++ b/drivers/remoteproc/remoteproc_elf_loader.c > @@ -248,9 +248,6 @@ int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw) > memset(ptr + filesz, 0, memsz - filesz); > } > > - if (ret == 0) > - rproc->elf_class = class; > - > return ret; > } > EXPORT_SYMBOL(rproc_elf_load_segments); > diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h > index ed127b2d35ca..d67eb5a40476 100644 > --- a/include/linux/remoteproc.h > +++ b/include/linux/remoteproc.h > @@ -515,6 +515,7 @@ struct rproc { > struct list_head dump_segments; > int nb_vdev; > u8 elf_class; > + u16 elf_machine; > }; Reviewed-by: Mathieu Poirier > > /** > @@ -619,6 +620,7 @@ int rproc_coredump_add_custom_segment(struct rproc *rproc, > struct rproc_dump_segment *segment, > void *dest), > void *priv); > +int rproc_coredump_set_elf_info(struct rproc *rproc, u8 class, u16 machine); > > static inline struct rproc_vdev *vdev_to_rvdev(struct virtio_device *vdev) > { > -- > 2.17.1 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel