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GET /api/1.2/patches/2221412/?format=api
{ "id": 2221412, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2221412/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260408-hpe-gsc-upstream-v1-5-2be1fb7cbbfc@hpe.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/1.2/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260408-hpe-gsc-upstream-v1-5-2be1fb7cbbfc@hpe.com>", "list_archive_url": null, "date": "2026-04-08T19:24:17", "name": "[5/9] misc: Add HPE GSC memory-mapped EEPROM driver", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "eaf672251af68fd0b9b0f292b562d320c6900eca", "submitter": { "id": 93099, "url": "http://patchwork.ozlabs.org/api/1.2/people/93099/?format=api", "name": "Jorge Cisneros", "email": "jorge.cisneros@hpe.com" }, "delegate": { "id": 3651, "url": "http://patchwork.ozlabs.org/api/1.2/users/3651/?format=api", "username": "trini", "first_name": "Tom", "last_name": "Rini", "email": "trini@ti.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260408-hpe-gsc-upstream-v1-5-2be1fb7cbbfc@hpe.com/mbox/", "series": [ { "id": 499288, "url": "http://patchwork.ozlabs.org/api/1.2/series/499288/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=499288", "date": "2026-04-08T19:24:17", "name": "arm: hpe: Add HPE GSC (Gen12) BMC SoC support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499288/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221412/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2221412/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": 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"X-Spam-Status": "No, score=-2.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,\n DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,\n RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,\n RCVD_IN_VALIDITY_CERTIFIED_BLOCKED,RCVD_IN_VALIDITY_RPBL_BLOCKED,\n SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.2", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=hpe.com; h=cc\n :content-transfer-encoding:content-type:date:from:in-reply-to\n :message-id:mime-version:references:subject:to; s=pps0720; bh=3k\n NMA94sDi5z6jvNUhFrIO8I1nP5PWggkV4NmHgz65Q=; b=f3iGF0KOrBOp3ZEJZW\n O+lGzOeRVDAucvw1i260f0oKJpgvChUydoVMxYd20B/1F5Zwij02MhCc5tHhyOVw\n VcvysbgDcKk4uUJ7mkLgtPcseQoo/9duC+W1p+gR48QYRnf8miSHaorP0RNP6QcZ\n Xl+5VDYP00YBDw/olhgZvvbEk3I4X2ApQkPt9Av7lBSmeDSlyHdxk1l+oWl6hcCN\n TyYN7bWQPHMkOtKPupTb8EXzx5/OzWnyWc0GTNCWpeUhXKTmjEJJmj3AqknT8lol\n 6H06Q7NzeGWB1yWhKk+IZvf6xcCwqop5h0YFK1IkGn+xX+DiTgOUjZYIaUj6sLVd\n UbTA==", "From": "Jorge Cisneros <jorge.cisneros@hpe.com>", "Date": "Wed, 08 Apr 2026 19:24:17 +0000", "Subject": "[PATCH 5/9] misc: Add HPE GSC memory-mapped EEPROM driver", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260408-hpe-gsc-upstream-v1-5-2be1fb7cbbfc@hpe.com>", "References": "<20260408-hpe-gsc-upstream-v1-0-2be1fb7cbbfc@hpe.com>", "In-Reply-To": "<20260408-hpe-gsc-upstream-v1-0-2be1fb7cbbfc@hpe.com>", "To": "u-boot@lists.denx.de", "Cc": "Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>,\n Tom Rini <trini@konsulko.com>, Jean-Marie Verdun <verdun@hpe.com>,\n Nick Hawkins <nick.hawkins@hpe.com>,\n Casey Connolly <casey.connolly@linaro.org>, Anshul Dalal <anshuld@ti.com>,\n Tien Fong Chee <tien.fong.chee@altera.com>, Peng Fan <peng.fan@nxp.com>,\n Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>,\n Tingting Meng <tingting.meng@altera.com>, Alice Guo <alice.guo@nxp.com>,\n Quentin Schulz <quentin.schulz@cherry.de>,\n Ilias Apalodimas <ilias.apalodimas@linaro.org>,\n Tony Dinh <mibodhi@gmail.com>,\n Marek Vasut <marek.vasut+renesas@mailbox.org>,\n Stefan Roese <stefan.roese@mailbox.org>,\n Svyatoslav Ryhel <clamor95@gmail.com>,\n Patrice Chotard <patrice.chotard@foss.st.com>,\n Mattijs Korpershoek <mkorpershoek@kernel.org>,\n Shmuel Leib Melamud <smelamud@redhat.com>,\n Lukasz Majewski <lukma@nabladev.com>,\n Sumit Garg <sumit.garg@oss.qualcomm.com>,\n Chen-Yu Tsai <wens@kernel.org>, Justin Klaassen <justin@tidylabs.net>,\n Neha Malcom Francis <n-francis@ti.com>,\n Jamie Gibbons <jamie.gibbons@microchip.com>,\n Leo Yu-Chi Liang <ycliang@andestech.com>,\n Jerome Forissier <jerome.forissier@arm.com>,\n Simon Glass <sjg@chromium.org>,\n Neil Armstrong <neil.armstrong@linaro.org>, Yao Zi <me@ziyao.cc>,\n Kuan-Wei Chiu <visitorckw@gmail.com>,\n \"Kory Maincent (TI.com)\" <kory.maincent@bootlin.com>,\n Raymond Mao <raymond.mao@riscstar.com>,\n Philip Molloy <philip.molloy@analog.com>,\n Jorge Cisneros <jorge.cisneros@hpe.com>", "X-Mailer": "b4 0.15.1", "X-Authority-Analysis": "v=2.4 cv=UMLt2ify c=1 sm=1 tr=0 ts=69d6ab71 cx=c_pps\n a=5jkVtQsCUlC8zk5UhkBgHg==:117 a=5jkVtQsCUlC8zk5UhkBgHg==:17\n a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=gQcMVamqm3wCPoSYhaRC:22 a=g3u0LPWLDYfGfufhFw6-:22 a=MvuuwTCpAAAA:8\n a=6ZYzDi2jFxUr4rbyXHYA:9 a=QEXdDO2ut3YA:10", "X-Proofpoint-GUID": "GR4cax_FoF-l1gCO27aDKEPpz9kwGuZW", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDA4MDE4MSBTYWx0ZWRfX7o/ddaUbWLdW\n QYSAOH3xh4RFuLj1NOQPprmU7cxezI/wtNhvzr9wdet/UseGLRTvIhrTuhhJDO8zeUA7tlPjm6S\n UJ+ntjxINnpOLCRfvN+zJbYdT7sUfS0pn+mI8L++g0/ostHyxn5Aa67YejSRWeW2LJ+kbaRogHC\n OaVxuiwN/0Oky5h634ranc6/H4VzcG8qiAqS4ZDrKbI4KXPnZtlYPomor9vIBe+e5g4KE2oV0hG\n qjGngxK7Xo3i3LmFtVzF1GV+M8viUI8Yj7b7itTkxCafiEMy6xi14tYw0jKpN1+oPApa6U0l0+K\n DvVeoAfG4l1uLHtcCVO5eaeMdz4aeAO0PXbg5sf2alyhgisC94OcES78diHt/FFVG1UyLZ1KERy\n rtVbObs57xkmoZkEh2fz1nobJIWQllg0sU2h+bK0WTCpzTjA8xTMF4XNTC33qlIUKZMf3W9o09Z\n FQLctWC8utva5aeZPtA==", "X-Proofpoint-ORIG-GUID": "GR4cax_FoF-l1gCO27aDKEPpz9kwGuZW", "X-HPE-SCL": "-1", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-08_05,2026-04-08_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n phishscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015\n malwarescore=0 bulkscore=0 priorityscore=1501 suspectscore=0 impostorscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604080181", "X-Mailman-Approved-At": "Thu, 09 Apr 2026 15:00:51 +0200", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.39", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<https://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>", "X-Virus-Scanned": "clamav-milter 0.103.8 at phobos.denx.de", "X-Virus-Status": "Clean" }, "content": "Add a driver for the HPE GSC memory-mapped virtual EEPROM. This\ndevice provides access to system VPD (Vital Product Data) including\nMAC addresses, serial numbers, and part numbers through a simple\nmemory-mapped interface.\n\nThe driver registers as UCLASS_I2C_EEPROM for compatibility with\nthe standard EEPROM read/write API and includes checksum validation\nto detect data corruption.\n\nSigned-off-by: Jorge Cisneros <jorge.cisneros@hpe.com>\n---\n drivers/misc/Kconfig | 7 +++\n drivers/misc/Makefile | 1 +\n drivers/misc/gsc_mem_eeprom.c | 118 ++++++++++++++++++++++++++++++++++++++++++\n 3 files changed, 126 insertions(+)", "diff": "diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig\nindex a0aa290480e..5d316b03ec7 100644\n--- a/drivers/misc/Kconfig\n+++ b/drivers/misc/Kconfig\n@@ -573,6 +573,13 @@ config SPL_I2C_EEPROM\n \t This option is an SPL-variant of the I2C_EEPROM option.\n \t See the help of I2C_EEPROM for details.\n \n+config GSC_MEMEEPROM\n+\tbool \"HPE GSC memory-mapped EEPROM driver\"\n+\tdepends on MISC\n+\thelp\n+\t Support for HPE GSC memory-mapped EEPROM used for storing\n+\t VPD (Vital Product Data) in HPE Gen12 server BMCs.\n+\n config SYS_I2C_EEPROM_ADDR\n \thex \"Chip address of the EEPROM device\"\n \tdepends on ID_EEPROM || I2C_EEPROM || SPL_I2C_EEPROM || CMD_EEPROM || ENV_IS_IN_EEPROM\ndiff --git a/drivers/misc/Makefile b/drivers/misc/Makefile\nindex 1d950f7a0ab..e616b9f67d2 100644\n--- a/drivers/misc/Makefile\n+++ b/drivers/misc/Makefile\n@@ -44,6 +44,7 @@ obj-$(CONFIG_GDSYS_SOC) += gdsys_soc.o\n obj-$(CONFIG_IRQ) += irq-uclass.o\n obj-$(CONFIG_SANDBOX) += irq_sandbox.o irq_sandbox_test.o\n obj-$(CONFIG_$(PHASE_)I2C_EEPROM) += i2c_eeprom.o\n+obj-$(CONFIG_GSC_MEMEEPROM) += gsc_mem_eeprom.o\n obj-$(CONFIG_IHS_FPGA) += ihs_fpga.o\n obj-$(CONFIG_IMX8) += imx8/\n obj-$(CONFIG_IMX_ELE) += imx_ele/\ndiff --git a/drivers/misc/gsc_mem_eeprom.c b/drivers/misc/gsc_mem_eeprom.c\nnew file mode 100644\nindex 00000000000..f67662fe40b\n--- /dev/null\n+++ b/drivers/misc/gsc_mem_eeprom.c\n@@ -0,0 +1,118 @@\n+// SPDX-License-Identifier: GPL-2.0+\n+/*\n+ * HPE GSC memory-mapped EEPROM driver\n+ *\n+ * (C) Copyright 2025 Hewlett Packard Enterprise Development LP.\n+ */\n+\n+#include <dm.h>\n+#include <dm/device-internal.h>\n+#include <i2c_eeprom.h>\n+#include <linux/io.h>\n+#include <linux/kernel.h>\n+\n+struct memory_eeprom_priv {\n+\tu64 mem_offset;\n+\tint size;\n+};\n+\n+static int validate_checksum(u8 *data)\n+{\n+\tu16 sum = 0;\n+\tu16 word;\n+\tu8 rev;\n+\tint i;\n+\n+\trev = readb(data);\n+\tswitch (rev) {\n+\tcase 2:\n+\tcase 3:\n+\t\tfor (i = 0; i < 64; i++) {\n+\t\t\tmemcpy(&word, data, sizeof(word));\n+\t\t\tdata += sizeof(word);\n+\t\t\tsum += word;\n+\t\t}\n+\t\tif (sum == 0)\n+\t\t\treturn 1;\n+\t\tdebug(\"%s - Computed checksum fails 0x%04x\\n\", __func__, sum);\n+\t\tbreak;\n+\tdefault:\n+\t\tdebug(\"%s - Version byte 0x%02x unsupported.\\n\", __func__, rev);\n+\t}\n+\treturn 0;\n+}\n+\n+static int mem_eeprom_read(struct udevice *dev, int offset, u8 *buf,\n+\t\t\t int size)\n+{\n+\tstruct memory_eeprom_priv *priv = dev_get_priv(dev);\n+\tu8 *ptr;\n+\n+\tptr = map_physmem(priv->mem_offset, priv->size, MAP_NOCACHE);\n+\tif (!ptr) {\n+\t\tprintf(\"%s - failed to map physical memory.\\n\", __func__);\n+\t\treturn -ENODEV;\n+\t}\n+\n+\tif (size + offset > priv->size) {\n+\t\tunmap_physmem(ptr, MAP_NOCACHE);\n+\t\treturn -ENOSYS;\n+\t}\n+\n+\tmemcpy(buf, &ptr[offset], size);\n+\tunmap_physmem(ptr, MAP_NOCACHE);\n+\n+\treturn 0;\n+}\n+\n+static const struct i2c_eeprom_ops i2c_mem_eeprom_ops = {\n+\t.read = mem_eeprom_read,\n+};\n+\n+static const struct udevice_id i2c_mem_eeprom_ids[] = {\n+\t{ .compatible = \"i2c_gsc_mem_eeprom\" },\n+\t{ }\n+};\n+\n+static int i2c_mem_eeprom_probe(struct udevice *dev)\n+{\n+\tstruct memory_eeprom_priv *priv = dev_get_priv(dev);\n+\tu8 *ptr;\n+\tu8 crc1, crc2;\n+\tu32 reg[2];\n+\tint ret;\n+\n+\tret = dev_read_u32_array(dev, \"reg\", reg, 2);\n+\tif (ret) {\n+\t\tprintf(\"Error reading reg from DT: %d\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\tpriv->mem_offset = reg[0];\n+\tpriv->size = reg[1];\n+\n+\tptr = map_physmem(priv->mem_offset, priv->size, MAP_NOCACHE);\n+\tif (!ptr) {\n+\t\tprintf(\"%s failed to map physical memory.\\n\", __func__);\n+\t\treturn -ENODEV;\n+\t}\n+\n+\tcrc1 = validate_checksum(ptr);\n+\tcrc2 = validate_checksum(ptr + 128);\n+\tunmap_physmem(ptr, MAP_NOCACHE);\n+\n+\tif (crc1 != 1 || crc2 != 1) {\n+\t\tprintf(\"%s - Warning: Invalid checksum\\n\", __func__);\n+\t\treturn -ENODEV;\n+\t}\n+\n+\treturn 0;\n+}\n+\n+U_BOOT_DRIVER(i2c_gsc_memeeprom) = {\n+\t.name = \"gsc_mem_eeprom\",\n+\t.id = UCLASS_I2C_EEPROM,\n+\t.of_match = i2c_mem_eeprom_ids,\n+\t.probe = i2c_mem_eeprom_probe,\n+\t.ops = &i2c_mem_eeprom_ops,\n+\t.priv_auto = sizeof(struct memory_eeprom_priv),\n+};\n", "prefixes": [ "5/9" ] }