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[194.187.74.233]) by smtp.googlemail.com with ESMTPSA id c8-20020a056402120800b0045726e8a22bsm1344977edw.46.2022.11.11.09.57.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 11 Nov 2022 09:57:38 -0800 (PST) Message-ID: Date: Fri, 11 Nov 2022 18:57:37 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:96.0) Gecko/20100101 Thunderbird/96.0 Subject: Re: [PATCH] nvmem: u-boot-env: add Broadcom format support To: Srinivas Kandagatla , =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= Cc: Tom Rini , linux-arm-kernel@lists.infradead.org, u-boot@lists.denx.de, linux-kernel@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com References: <20221017071722.32731-1-zajec5@gmail.com> From: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= In-Reply-To: <20221017071722.32731-1-zajec5@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 17.10.2022 09:17, Rafał Miłecki wrote: > From: Rafał Miłecki > > Broadcom uses U-Boot for a lot of their bcmbca familiy chipsets. They > decided to store U-Boot environment data inside U-Boot partition and to > use a custom header (with "uEnv" magic and env data length). > > Add support for Broadcom's specific binding and their custom format. > > Ref: c34f9f5499278 ("dt-bindings: nvmem: u-boot,env: add Broadcom's variant binding") This should be actually: 6b0584c19d87 ("dt-bindings: nvmem: u-boot,env: add Broadcom's variant binding") Srinivas: could you fix it up while applying, please? > Signed-off-by: Rafał Miłecki > --- > drivers/nvmem/u-boot-env.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/drivers/nvmem/u-boot-env.c b/drivers/nvmem/u-boot-env.c > index 8e72d1bbd649..049330660fd7 100644 > --- a/drivers/nvmem/u-boot-env.c > +++ b/drivers/nvmem/u-boot-env.c > @@ -16,6 +16,7 @@ > enum u_boot_env_format { > U_BOOT_FORMAT_SINGLE, > U_BOOT_FORMAT_REDUNDANT, > + U_BOOT_FORMAT_BROADCOM, > }; > > struct u_boot_env { > @@ -40,6 +41,13 @@ struct u_boot_env_image_redundant { > uint8_t data[]; > } __packed; > > +struct u_boot_env_image_broadcom { > + __le32 magic; > + __le32 len; > + __le32 crc32; > + uint8_t data[0]; > +} __packed; > + > static int u_boot_env_read(void *context, unsigned int offset, void *val, > size_t bytes) > { > @@ -138,6 +146,11 @@ static int u_boot_env_parse(struct u_boot_env *priv) > crc32_data_offset = offsetof(struct u_boot_env_image_redundant, mark); > data_offset = offsetof(struct u_boot_env_image_redundant, data); > break; > + case U_BOOT_FORMAT_BROADCOM: > + crc32_offset = offsetof(struct u_boot_env_image_broadcom, crc32); > + crc32_data_offset = offsetof(struct u_boot_env_image_broadcom, data); > + data_offset = offsetof(struct u_boot_env_image_broadcom, data); > + break; > } > crc32 = le32_to_cpu(*(__le32 *)(buf + crc32_offset)); > crc32_data_len = priv->mtd->size - crc32_data_offset; > @@ -202,6 +215,7 @@ static const struct of_device_id u_boot_env_of_match_table[] = { > { .compatible = "u-boot,env", .data = (void *)U_BOOT_FORMAT_SINGLE, }, > { .compatible = "u-boot,env-redundant-bool", .data = (void *)U_BOOT_FORMAT_REDUNDANT, }, > { .compatible = "u-boot,env-redundant-count", .data = (void *)U_BOOT_FORMAT_REDUNDANT, }, > + { .compatible = "brcm,env", .data = (void *)U_BOOT_FORMAT_BROADCOM, }, > {}, > }; 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