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author | Linux Build Service Account <lnxbuild@localhost> | 2016-09-15 07:33:01 -0700 |
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committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-09-15 07:33:00 -0700 |
commit | 7ad50395d8fcb9a7cdfa27978279e2f15b299c8c (patch) | |
tree | f198f1534924840fd814c003e486ebfd77e27930 | |
parent | 5aa936716e843c264feae686a97b1d0079cfed70 (diff) | |
parent | fb272b7bd6525294ea0092b6290dd99b8bb573cf (diff) |
Merge "defconfig: enable spss-utils driver for msmcobalt"
-rw-r--r-- | Documentation/devicetree/bindings/arm/msm/spss_utils.txt | 27 | ||||
-rw-r--r-- | arch/arm/boot/dts/qcom/msmcobalt-v2.dtsi | 5 | ||||
-rw-r--r-- | arch/arm/boot/dts/qcom/msmcobalt.dtsi | 10 | ||||
-rw-r--r-- | arch/arm64/configs/msmcortex-perf_defconfig | 1 | ||||
-rw-r--r-- | arch/arm64/configs/msmcortex_defconfig | 1 | ||||
-rw-r--r-- | drivers/soc/qcom/Kconfig | 11 | ||||
-rw-r--r-- | drivers/soc/qcom/Makefile | 1 | ||||
-rw-r--r-- | drivers/soc/qcom/spss_utils.c | 294 |
8 files changed, 350 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/msm/spss_utils.txt b/Documentation/devicetree/bindings/arm/msm/spss_utils.txt new file mode 100644 index 000000000000..21b96377e5e4 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/msm/spss_utils.txt @@ -0,0 +1,27 @@ +Qualcomm Technologies, Inc. Secure Processor SubSystem Utilities (spss_utils) + +The Secure Processor SubSystem (SPSS) is a dedicated subsystem for security. +It has its own CPU, memories, and cryptographic engine. +It shall provide cryptographic services to other subsystems. +The SPSS firmware is loaded by PIL driver. +The communication with SPSS is done via spcom driver, using glink. + +The spss_utils driver selects the SPSS firmware file, +according to a dedicated fuse and the platform HW version. + +Required properties: +-compatible : should be "qcom,spss_utils" +-qcom,spss-fuse-addr: fuse register physical address +-qcom,spss-fuse-bit: fuse relevant bit +-qcom,spss-test-firmware-name: test firmware file name +-qcom,spss-prod-firmware-name: production firmware file name + +Example: + qcom,spss_utils { + compatible = "qcom,spss-utils"; + + qcom,spss-fuse-addr = <0x007841c4 0x4>; /* spss test fuse physical address */ + qcom,spss-fuse-bit = <27>; + qcom,spss-test-firmware-name = "spss1t"; /* 8 chars max */ + qcom,spss-prod-firmware-name = "spss1p"; /* 8 chars max */ + }; diff --git a/arch/arm/boot/dts/qcom/msmcobalt-v2.dtsi b/arch/arm/boot/dts/qcom/msmcobalt-v2.dtsi index 48a23b44b5b2..7ce95b04a509 100644 --- a/arch/arm/boot/dts/qcom/msmcobalt-v2.dtsi +++ b/arch/arm/boot/dts/qcom/msmcobalt-v2.dtsi @@ -746,6 +746,11 @@ }; }; +&spss_utils { + qcom,spss-test-firmware-name = "spss2t"; /* 8 chars max */ + qcom,spss-prod-firmware-name = "spss2p"; /* 8 chars max */ +}; + &ufs1 { clock-names = "core_clk", diff --git a/arch/arm/boot/dts/qcom/msmcobalt.dtsi b/arch/arm/boot/dts/qcom/msmcobalt.dtsi index f672aafd480a..d63d1f429803 100644 --- a/arch/arm/boot/dts/qcom/msmcobalt.dtsi +++ b/arch/arm/boot/dts/qcom/msmcobalt.dtsi @@ -1635,6 +1635,16 @@ status = "ok"; }; + spss_utils: qcom,spss_utils { + compatible = "qcom,spss-utils"; + /* spss test fuse physical address */ + qcom,spss-fuse-addr = <0x007841c4 0x4>; + qcom,spss-fuse-bit = <27>; + qcom,spss-test-firmware-name = "spss"; /* default name */ + qcom,spss-prod-firmware-name = "spss1p"; /* 8 chars max */ + status = "ok"; + }; + sdhc_2: sdhci@c0a4900 { compatible = "qcom,sdhci-msm"; reg = <0xc0a4900 0x314>, <0xc0a4000 0x800>; diff --git a/arch/arm64/configs/msmcortex-perf_defconfig b/arch/arm64/configs/msmcortex-perf_defconfig index 5d76e41d4fed..c425514ddec5 100644 --- a/arch/arm64/configs/msmcortex-perf_defconfig +++ b/arch/arm64/configs/msmcortex-perf_defconfig @@ -494,6 +494,7 @@ CONFIG_MSM_GLINK_SMD_XPRT=y CONFIG_MSM_GLINK_SMEM_NATIVE_XPRT=y CONFIG_MSM_GLINK_SPI_XPRT=y CONFIG_MSM_SPCOM=y +CONFIG_MSM_SPSS_UTILS=y CONFIG_MSM_SMEM_LOGGING=y CONFIG_MSM_SMP2P=y CONFIG_MSM_SMP2P_TEST=y diff --git a/arch/arm64/configs/msmcortex_defconfig b/arch/arm64/configs/msmcortex_defconfig index 367822dd0a94..27f7ac6663d6 100644 --- a/arch/arm64/configs/msmcortex_defconfig +++ b/arch/arm64/configs/msmcortex_defconfig @@ -506,6 +506,7 @@ CONFIG_MSM_GLINK_SMD_XPRT=y CONFIG_MSM_GLINK_SMEM_NATIVE_XPRT=y CONFIG_MSM_GLINK_SPI_XPRT=y CONFIG_MSM_SPCOM=y +CONFIG_MSM_SPSS_UTILS=y CONFIG_MSM_SMEM_LOGGING=y CONFIG_MSM_SMP2P=y CONFIG_MSM_SMP2P_TEST=y diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index f884f829b51c..9c27344165be 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -127,6 +127,17 @@ config MSM_SPCOM spcom provides clients/server API, although currently only one client or server is allowed per logical channel. +config MSM_SPSS_UTILS + depends on MSM_PIL + bool "Secure Processor Utilities" + help + spss-utils driver selects Secure Processor firmware file name. + The firmware file name for test or production is selected based + on a test fuse. + Different file name is used for differnt SPSS HW versions, + because the SPSS firmware size is too small to support multiple + HW versions. + config MSM_SMEM_LOGGING depends on MSM_SMEM bool "MSM Shared Memory Logger" diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index fb8437d7a7c3..d9134a558be6 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_MSM_IPC_ROUTER_HSIC_XPRT) += ipc_router_hsic_xprt.o obj-$(CONFIG_MSM_IPC_ROUTER_MHI_XPRT) += ipc_router_mhi_xprt.o obj-$(CONFIG_MSM_IPC_ROUTER_GLINK_XPRT) += ipc_router_glink_xprt.o obj-$(CONFIG_MSM_SPCOM) += spcom.o +obj-$(CONFIG_MSM_SPSS_UTILS) += spss_utils.o obj-y += qdsp6v2/ obj-$(CONFIG_MSM_SYSTEM_HEALTH_MONITOR) += system_health_monitor_v01.o obj-$(CONFIG_MSM_SYSTEM_HEALTH_MONITOR) += system_health_monitor.o diff --git a/drivers/soc/qcom/spss_utils.c b/drivers/soc/qcom/spss_utils.c new file mode 100644 index 000000000000..9f799dfd9003 --- /dev/null +++ b/drivers/soc/qcom/spss_utils.c @@ -0,0 +1,294 @@ +/* + * Copyright (c) 2016, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * Secure-Processor-SubSystem (SPSS) utilities. + * + * This driver provides utilities for the Secure Processor (SP). + * + * The SP daemon needs to load different SPSS images based on: + * + * 1. Test/Production key used to sign the SPSS image (read fuse). + * 2. SPSS HW version (selected via Device Tree). + * + */ + +#define pr_fmt(fmt) "spss_utils [%s]: " fmt, __func__ + +#include <linux/kernel.h> /* min() */ +#include <linux/module.h> /* MODULE_LICENSE */ +#include <linux/device.h> /* class_create() */ +#include <linux/slab.h> /* kzalloc() */ +#include <linux/fs.h> /* file_operations */ +#include <linux/cdev.h> /* cdev_add() */ +#include <linux/errno.h> /* EINVAL, ETIMEDOUT */ +#include <linux/printk.h> /* pr_err() */ +#include <linux/bitops.h> /* BIT(x) */ +#include <linux/platform_device.h> /* platform_driver_register() */ +#include <linux/of.h> /* of_property_count_strings() */ +#include <linux/io.h> /* ioremap_nocache() */ + +#include <soc/qcom/subsystem_restart.h> + +/* driver name */ +#define DEVICE_NAME "spss-utils" + +static bool is_test_fuse_set; +static const char *test_firmware_name; +static const char *prod_firmware_name; +static const char *firmware_name; +static struct device *spss_dev; + +/*==========================================================================*/ +/* Device Sysfs */ +/*==========================================================================*/ + +static ssize_t firmware_name_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret; + + if (!dev || !attr || !buf) { + pr_err("invalid param.\n"); + return -EINVAL; + } + + if (firmware_name == NULL) + ret = snprintf(buf, PAGE_SIZE, "%s\n", "unknown"); + else + ret = snprintf(buf, PAGE_SIZE, "%s\n", firmware_name); + + return ret; +} + +static ssize_t firmware_name_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + pr_err("set firmware name is not allowed.\n"); + + return -EINVAL; +} + +static DEVICE_ATTR(firmware_name, 0444, + firmware_name_show, firmware_name_store); + +static ssize_t test_fuse_state_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret; + + if (!dev || !attr || !buf) { + pr_err("invalid param.\n"); + return -EINVAL; + } + + if (is_test_fuse_set) + ret = snprintf(buf, PAGE_SIZE, "%s\n", "test"); + else + ret = snprintf(buf, PAGE_SIZE, "%s\n", "prod"); + + return ret; +} + +static ssize_t test_fuse_state_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + pr_err("set test fuse state is not allowed.\n"); + + return -EINVAL; +} + +static DEVICE_ATTR(test_fuse_state, 0444, + test_fuse_state_show, test_fuse_state_store); + +static int spss_create_sysfs(struct device *dev) +{ + int ret; + + ret = device_create_file(dev, &dev_attr_firmware_name); + if (ret < 0) { + pr_err("failed to create sysfs file for firmware_name.\n"); + return ret; + } + + ret = device_create_file(dev, &dev_attr_test_fuse_state); + if (ret < 0) { + pr_err("failed to create sysfs file for test_fuse_state.\n"); + return ret; + } + + return 0; +} + +/*==========================================================================*/ +/* Device Tree */ +/*==========================================================================*/ + +/** + * spss_parse_dt() - Parse Device Tree info. + */ +static int spss_parse_dt(struct device_node *node) +{ + int ret; + u32 spss_fuse_addr = 0; + u32 spss_fuse_bit = 0; + u32 spss_fuse_mask = 0; + void __iomem *spss_fuse_reg = NULL; + u32 val = 0; + + ret = of_property_read_string(node, "qcom,spss-test-firmware-name", + &test_firmware_name); + if (ret < 0) { + pr_err("can't get test fw name.\n"); + return -EFAULT; + } + + ret = of_property_read_string(node, "qcom,spss-prod-firmware-name", + &prod_firmware_name); + if (ret < 0) { + pr_err("can't get prod fw name.\n"); + return -EFAULT; + } + + ret = of_property_read_u32(node, "qcom,spss-fuse-addr", + &spss_fuse_addr); + if (ret < 0) { + pr_err("can't get fuse addr.\n"); + return -EFAULT; + } + + ret = of_property_read_u32(node, "qcom,spss-fuse-bit", + &spss_fuse_bit); + if (ret < 0) { + pr_err("can't get fuse bit.\n"); + return -EFAULT; + } + + spss_fuse_mask = BIT(spss_fuse_bit); + + pr_debug("spss_fuse_addr [0x%x] , spss_fuse_bit [%d] .\n", + (int) spss_fuse_addr, (int) spss_fuse_bit); + + spss_fuse_reg = ioremap_nocache(spss_fuse_addr, sizeof(u32)); + + if (!spss_fuse_reg) { + pr_err("can't map fuse addr.\n"); + return -EFAULT; + } + + val = readl_relaxed(spss_fuse_reg); + + pr_debug("spss fuse register value [0x%x].\n", (int) val); + + if (val & spss_fuse_mask) + is_test_fuse_set = true; + + iounmap(spss_fuse_reg); + + return 0; +} + +/** + * spss_probe() - initialization sequence + */ +static int spss_probe(struct platform_device *pdev) +{ + int ret = 0; + struct device_node *np = NULL; + struct device *dev = NULL; + + if (!pdev) { + pr_err("invalid pdev.\n"); + return -ENODEV; + } + + np = pdev->dev.of_node; + if (!np) { + pr_err("invalid DT node.\n"); + return -EINVAL; + } + + dev = &pdev->dev; + spss_dev = dev; + + if (dev == NULL) { + pr_err("invalid dev.\n"); + return -EINVAL; + } + + platform_set_drvdata(pdev, dev); + + ret = spss_parse_dt(np); + if (ret < 0) { + pr_err("fail to parse device tree.\n"); + return -EFAULT; + } + + if (is_test_fuse_set) + firmware_name = test_firmware_name; + else + firmware_name = prod_firmware_name; + + ret = subsystem_set_fwname("spss", firmware_name); + if (ret < 0) { + pr_err("fail to set fw name.\n"); + return -EFAULT; + } + + spss_create_sysfs(dev); + + pr_info("Initialization completed ok, firmware_name [%s].\n", + firmware_name); + + return 0; +} + +static const struct of_device_id spss_match_table[] = { + { .compatible = "qcom,spss-utils", }, + { }, +}; + +static struct platform_driver spss_driver = { + .probe = spss_probe, + .driver = { + .name = DEVICE_NAME, + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(spss_match_table), + }, +}; + +/*==========================================================================*/ +/* Driver Init/Exit */ +/*==========================================================================*/ +static int __init spss_init(void) +{ + int ret = 0; + + pr_info("spss-utils driver Ver 1.0 12-Sep-2016.\n"); + + ret = platform_driver_register(&spss_driver); + if (ret) + pr_err("register platform driver failed, ret [%d]\n", ret); + + return 0; +} +late_initcall(spss_init); /* start after PIL driver */ + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Secure Processor Utilities"); |