diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/808-v5.18-0007-nvmem-add-driver-for-Layerscape-SFP-Security-Fuse-Pr.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/808-v5.18-0007-nvmem-add-driver-for-Layerscape-SFP-Security-Fuse-Pr.patch | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/target/linux/generic/backport-5.10/808-v5.18-0007-nvmem-add-driver-for-Layerscape-SFP-Security-Fuse-Pr.patch b/target/linux/generic/backport-5.10/808-v5.18-0007-nvmem-add-driver-for-Layerscape-SFP-Security-Fuse-Pr.patch deleted file mode 100644 index 6afb68b3f9..0000000000 --- a/target/linux/generic/backport-5.10/808-v5.18-0007-nvmem-add-driver-for-Layerscape-SFP-Security-Fuse-Pr.patch +++ /dev/null @@ -1,139 +0,0 @@ -From f78451012b9e159afdba31c3eb69f223a9f42adc Mon Sep 17 00:00:00 2001 -From: Michael Walle <michael@walle.cc> -Date: Sun, 20 Feb 2022 15:15:23 +0000 -Subject: [PATCH] nvmem: add driver for Layerscape SFP (Security Fuse - Processor) - -Add support for the Security Fuse Processor found on Layerscape SoCs. -This driver implements basic read access. - -Signed-off-by: Michael Walle <michael@walle.cc> -Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> -Link: https://lore.kernel.org/r/20220220151527.17216-10-srinivas.kandagatla@linaro.org -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/nvmem/Kconfig | 12 +++++ - drivers/nvmem/Makefile | 2 + - drivers/nvmem/layerscape-sfp.c | 89 ++++++++++++++++++++++++++++++++++ - 3 files changed, 103 insertions(+) - create mode 100644 drivers/nvmem/layerscape-sfp.c - ---- a/drivers/nvmem/Kconfig -+++ b/drivers/nvmem/Kconfig -@@ -300,4 +300,16 @@ config NVMEM_BRCM_NVRAM - This driver provides support for Broadcom's NVRAM that can be accessed - using I/O mapping. - -+config NVMEM_LAYERSCAPE_SFP -+ tristate "Layerscape SFP (Security Fuse Processor) support" -+ depends on ARCH_LAYERSCAPE || COMPILE_TEST -+ depends on HAS_IOMEM -+ help -+ This driver provides support to read the eFuses on Freescale -+ Layerscape SoC's. For example, the vendor provides a per part -+ unique ID there. -+ -+ This driver can also be built as a module. If so, the module -+ will be called layerscape-sfp. -+ - endif ---- a/drivers/nvmem/Makefile -+++ b/drivers/nvmem/Makefile -@@ -61,3 +61,5 @@ obj-$(CONFIG_NVMEM_RMEM) += nvmem-rmem. - nvmem-rmem-y := rmem.o - obj-$(CONFIG_NVMEM_BRCM_NVRAM) += nvmem_brcm_nvram.o - nvmem_brcm_nvram-y := brcm_nvram.o -+obj-$(CONFIG_NVMEM_LAYERSCAPE_SFP) += nvmem-layerscape-sfp.o -+nvmem-layerscape-sfp-y := layerscape-sfp.o ---- /dev/null -+++ b/drivers/nvmem/layerscape-sfp.c -@@ -0,0 +1,89 @@ -+// SPDX-License-Identifier: GPL-2.0-only -+/* -+ * Layerscape SFP driver -+ * -+ * Copyright (c) 2022 Michael Walle <michael@walle.cc> -+ * -+ */ -+ -+#include <linux/device.h> -+#include <linux/io.h> -+#include <linux/mod_devicetable.h> -+#include <linux/module.h> -+#include <linux/nvmem-provider.h> -+#include <linux/platform_device.h> -+#include <linux/property.h> -+ -+#define LAYERSCAPE_SFP_OTP_OFFSET 0x0200 -+ -+struct layerscape_sfp_priv { -+ void __iomem *base; -+}; -+ -+struct layerscape_sfp_data { -+ int size; -+}; -+ -+static int layerscape_sfp_read(void *context, unsigned int offset, void *val, -+ size_t bytes) -+{ -+ struct layerscape_sfp_priv *priv = context; -+ -+ memcpy_fromio(val, priv->base + LAYERSCAPE_SFP_OTP_OFFSET + offset, -+ bytes); -+ -+ return 0; -+} -+ -+static struct nvmem_config layerscape_sfp_nvmem_config = { -+ .name = "fsl-sfp", -+ .reg_read = layerscape_sfp_read, -+}; -+ -+static int layerscape_sfp_probe(struct platform_device *pdev) -+{ -+ const struct layerscape_sfp_data *data; -+ struct layerscape_sfp_priv *priv; -+ struct nvmem_device *nvmem; -+ -+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); -+ if (!priv) -+ return -ENOMEM; -+ -+ priv->base = devm_platform_ioremap_resource(pdev, 0); -+ if (IS_ERR(priv->base)) -+ return PTR_ERR(priv->base); -+ -+ data = device_get_match_data(&pdev->dev); -+ -+ layerscape_sfp_nvmem_config.size = data->size; -+ layerscape_sfp_nvmem_config.dev = &pdev->dev; -+ layerscape_sfp_nvmem_config.priv = priv; -+ -+ nvmem = devm_nvmem_register(&pdev->dev, &layerscape_sfp_nvmem_config); -+ -+ return PTR_ERR_OR_ZERO(nvmem); -+} -+ -+static const struct layerscape_sfp_data ls1028a_data = { -+ .size = 0x88, -+}; -+ -+static const struct of_device_id layerscape_sfp_dt_ids[] = { -+ { .compatible = "fsl,ls1028a-sfp", .data = &ls1028a_data }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, layerscape_sfp_dt_ids); -+ -+static struct platform_driver layerscape_sfp_driver = { -+ .probe = layerscape_sfp_probe, -+ .driver = { -+ .name = "layerscape_sfp", -+ .of_match_table = layerscape_sfp_dt_ids, -+ }, -+}; -+module_platform_driver(layerscape_sfp_driver); -+ -+MODULE_AUTHOR("Michael Walle <michael@walle.cc>"); -+MODULE_DESCRIPTION("Layerscape Security Fuse Processor driver"); -+MODULE_LICENSE("GPL"); |