diff options
| -rw-r--r-- | Documentation/userspace-api/ioctl/ioctl-number.rst | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/resource.c | 23 | ||||
| -rw-r--r-- | drivers/acpi/Kconfig | 22 | ||||
| -rw-r--r-- | drivers/acpi/Makefile | 1 | ||||
| -rw-r--r-- | drivers/acpi/acpi_apd.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/acpi_pcc.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/internal.h | 2 | ||||
| -rw-r--r-- | drivers/acpi/pfr_telemetry.c | 435 | ||||
| -rw-r--r-- | drivers/acpi/pfr_update.c | 575 | ||||
| -rw-r--r-- | drivers/acpi/scan.c | 76 | ||||
| -rw-r--r-- | drivers/acpi/spcr.c | 9 | ||||
| -rw-r--r-- | include/linux/efi.h | 46 | ||||
| -rw-r--r-- | include/uapi/linux/pfrut.h | 262 | ||||
| -rw-r--r-- | tools/power/acpi/.gitignore | 1 | ||||
| -rw-r--r-- | tools/power/acpi/Makefile | 16 | ||||
| -rw-r--r-- | tools/power/acpi/Makefile.rules | 2 | ||||
| -rw-r--r-- | tools/power/acpi/man/pfrut.8 | 137 | ||||
| -rw-r--r-- | tools/power/acpi/tools/pfrut/Makefile | 23 | ||||
| -rw-r--r-- | tools/power/acpi/tools/pfrut/pfrut.c | 424 |
19 files changed, 1997 insertions, 62 deletions
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index cfe6cccf0f44..687efcf245c1 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -367,6 +367,7 @@ Code Seq# Include File Comments <mailto:aherrman@de.ibm.com> 0xE5 00-3F linux/fuse.h 0xEC 00-01 drivers/platform/chrome/cros_ec_dev.h ChromeOS EC driver +0xEE 00-09 uapi/linux/pfrut.h Platform Firmware Runtime Update and Telemetry 0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb.h sisfb (in development) <mailto:thomas@winischhofer.net> 0xF6 all LTTng Linux Trace Toolkit Next Generation diff --git a/arch/x86/kernel/resource.c b/arch/x86/kernel/resource.c index 9b9fb7882c20..9ae64f9af956 100644 --- a/arch/x86/kernel/resource.c +++ b/arch/x86/kernel/resource.c @@ -1,4 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 +#include <linux/dmi.h> #include <linux/ioport.h> #include <asm/e820/api.h> @@ -23,11 +24,31 @@ static void resource_clip(struct resource *res, resource_size_t start, res->start = end + 1; } +/* + * Some BIOS-es contain a bug where they add addresses which map to + * system RAM in the PCI host bridge window returned by the ACPI _CRS + * method, see commit 4dc2287c1805 ("x86: avoid E820 regions when + * allocating address space"). To avoid this Linux by default excludes + * E820 reservations when allocating addresses since 2010. + * In 2019 some systems have shown-up with E820 reservations which cover + * the entire _CRS returned PCI host bridge window, causing all attempts + * to assign memory to PCI BARs to fail if Linux uses E820 reservations. + * + * Ideally Linux would fully stop using E820 reservations, but then + * the old systems this was added for will regress. + * Instead keep the old behavior for old systems, while ignoring the + * E820 reservations for any systems from now on. + */ static void remove_e820_regions(struct resource *avail) { - int i; + int i, year = dmi_get_bios_year(); struct e820_entry *entry; + if (year >= 2018) + return; + + pr_info_once("PCI: Removing E820 reservations from host bridge windows\n"); + for (i = 0; i < e820_table->nr_entries; i++) { entry = &e820_table->entries[i]; diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 705331e3d87a..ba45541b1f1f 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -520,6 +520,28 @@ config ACPI_CONFIGFS userspace. The configurable ACPI groups will be visible under /config/acpi, assuming configfs is mounted under /config. +config ACPI_PFRUT + tristate "ACPI Platform Firmware Runtime Update and Telemetry" + depends on 64BIT + help + This mechanism allows certain pieces of the platform firmware + to be updated on the fly while the system is running (runtime) + without the need to restart it, which is key in the cases when + the system needs to be available 100% of the time and it cannot + afford the downtime related to restarting it, or when the work + carried out by the system is particularly important, so it cannot + be interrupted, and it is not practical to wait until it is complete. + + The existing firmware code can be modified (driver update) or + extended by adding new code to the firmware (code injection). + + Besides, the telemetry driver allows user space to fetch telemetry + data from the firmware with the help of the Platform Firmware Runtime + Telemetry interface. + + To compile the drivers as modules, choose M here: + the modules will be called pfr_update and pfr_telemetry. + if ARM64 source "drivers/acpi/arm64/Kconfig" diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 08c2d985c57c..f47032769f69 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -103,6 +103,7 @@ obj-$(CONFIG_ACPI_CPPC_LIB) += cppc_acpi.o obj-$(CONFIG_ACPI_SPCR_TABLE) += spcr.o obj-$(CONFIG_ACPI_DEBUGGER_USER) += acpi_dbg.o obj-$(CONFIG_ACPI_PPTT) += pptt.o +obj-$(CONFIG_ACPI_PFRUT) += pfr_update.o pfr_telemetry.o # processor has its own "processor." module_param namespace processor-y := processor_driver.o diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c index 2b958b426b03..e7934ba79b02 100644 --- a/drivers/acpi/acpi_apd.c +++ b/drivers/acpi/acpi_apd.c @@ -102,6 +102,8 @@ static int fch_misc_setup(struct apd_private_data *pdata) resource_size(rentry->res)); break; } + if (!clk_data->base) + return -ENOMEM; acpi_dev_free_resource_list(&resource_list); diff --git a/drivers/acpi/acpi_pcc.c b/drivers/acpi/acpi_pcc.c index 41e3ebd204ff..a12b55d81209 100644 --- a/drivers/acpi/acpi_pcc.c +++ b/drivers/acpi/acpi_pcc.c @@ -31,7 +31,7 @@ struct pcc_data { struct acpi_pcc_info ctx; }; -struct acpi_pcc_info pcc_ctx; +static struct acpi_pcc_info pcc_ctx; static void pcc_rx_callback(struct mbox_client *cl, void *m) { diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 1db3a2f81763..457e11d851b8 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -14,7 +14,7 @@ int early_acpi_osi_init(void); int acpi_osi_init(void); acpi_status acpi_os_initialize1(void); -int acpi_scan_init(void); +void acpi_scan_init(void); #ifdef CONFIG_PCI void acpi_pci_root_init(void); void acpi_pci_link_init(void); diff --git a/drivers/acpi/pfr_telemetry.c b/drivers/acpi/pfr_telemetry.c new file mode 100644 index 000000000000..9abf350bd7a5 --- /dev/null +++ b/drivers/acpi/pfr_telemetry.c @@ -0,0 +1,435 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ACPI Platform Firmware Runtime Telemetry driver + * + * Copyright (C) 2021 Intel Corporation + * Author: Chen Yu <yu.c.chen@intel.com> + * + * This driver allows user space to fetch telemetry data from the + * firmware with the help of the Platform Firmware Runtime Telemetry + * interface. + */ +#include <linux/acpi.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/miscdevice.h> +#include <linux/module.h> +#include <linux/mm.h> +#include <linux/platform_device.h> +#include <linux/string.h> +#include <linux/uaccess.h> +#include <linux/uio.h> +#include <linux/uuid.h> + +#include <uapi/linux/pfrut.h> + +#define PFRT_LOG_EXEC_IDX 0 +#define PFRT_LOG_HISTORY_IDX 1 + +#define PFRT_LOG_ERR 0 +#define PFRT_LOG_WARN 1 +#define PFRT_LOG_INFO 2 +#define PFRT_LOG_VERB 4 + +#define PFRT_FUNC_SET_LEV 1 +#define PFRT_FUNC_GET_LEV 2 +#define PFRT_FUNC_GET_DATA 3 + +#define PFRT_REVID_1 1 +#define PFRT_REVID_2 2 +#define PFRT_DEFAULT_REV_ID PFRT_REVID_1 + +enum log_index { + LOG_STATUS_IDX = 0, + LOG_EXT_STATUS_IDX = 1, + LOG_MAX_SZ_IDX = 2, + LOG_CHUNK1_LO_IDX = 3, + LOG_CHUNK1_HI_IDX = 4, + LOG_CHUNK1_SZ_IDX = 5, + LOG_CHUNK2_LO_IDX = 6, + LOG_CHUNK2_HI_IDX = 7, + LOG_CHUNK2_SZ_IDX = 8, + LOG_ROLLOVER_CNT_IDX = 9, + LOG_RESET_CNT_IDX = 10, + LOG_NR_IDX +}; + +struct pfrt_log_device { + int index; + struct pfrt_log_info info; + struct device *parent_dev; + struct miscdevice miscdev; +}; + +/* pfrt_guid is the parameter for _DSM method */ +static const guid_t pfrt_log_guid = + GUID_INIT(0x75191659, 0x8178, 0x4D9D, 0xB8, 0x8F, 0xAC, 0x5E, + 0x5E, 0x93, 0xE8, 0xBF); + +static DEFINE_IDA(pfrt_log_ida); + +static inline struct pfrt_log_device *to_pfrt_log_dev(struct file *file) +{ + return container_of(file->private_data, struct pfrt_log_device, miscdev); +} + +static int get_pfrt_log_data_info(struct pfrt_log_data_info *data_info, + struct pfrt_log_device *pfrt_log_dev) +{ + acpi_handle handle = ACPI_HANDLE(pfrt_log_dev->parent_dev); + union acpi_object *out_obj, in_obj, in_buf; + int ret = -EBUSY; + + memset(data_info, 0, sizeof(*data_info)); + memset(&in_obj, 0, sizeof(in_obj)); + memset(&in_buf, 0, sizeof(in_buf)); + in_obj.type = ACPI_TYPE_PACKAGE; + in_obj.package.count = 1; + in_obj.package.elements = &in_buf; + in_buf.type = ACPI_TYPE_INTEGER; + in_buf.integer.value = pfrt_log_dev->info.log_type; + + out_obj = acpi_evaluate_dsm_typed(handle, &pfrt_log_guid, + pfrt_log_dev->info.log_revid, PFRT_FUNC_GET_DATA, + &in_obj, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + if (out_obj->package.count < LOG_NR_IDX || + out_obj->package.elements[LOG_STATUS_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_MAX_SZ_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_CHUNK1_LO_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_CHUNK1_HI_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_CHUNK1_SZ_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_CHUNK2_LO_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_CHUNK2_HI_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_CHUNK2_SZ_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_ROLLOVER_CNT_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[LOG_RESET_CNT_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->status = out_obj->package.elements[LOG_STATUS_IDX].integer.value; + data_info->ext_status = + out_obj->package.elements[LOG_EXT_STATUS_IDX].integer.value; + if (data_info->status != DSM_SUCCEED) { + dev_dbg(pfrt_log_dev->parent_dev, "Error Status:%d\n", data_info->status); + dev_dbg(pfrt_log_dev->parent_dev, "Error Extend Status:%d\n", + data_info->ext_status); + goto free_acpi_buffer; + } + + data_info->max_data_size = + out_obj->package.elements[LOG_MAX_SZ_IDX].integer.value; + data_info->chunk1_addr_lo = + out_obj->package.elements[LOG_CHUNK1_LO_IDX].integer.value; + data_info->chunk1_addr_hi = + out_obj->package.elements[LOG_CHUNK1_HI_IDX].integer.value; + data_info->chunk1_size = + out_obj->package.elements[LOG_CHUNK1_SZ_IDX].integer.value; + data_info->chunk2_addr_lo = + out_obj->package.elements[LOG_CHUNK2_LO_IDX].integer.value; + data_info->chunk2_addr_hi = + out_obj->package.elements[LOG_CHUNK2_HI_IDX].integer.value; + data_info->chunk2_size = + out_obj->package.elements[LOG_CHUNK2_SZ_IDX].integer.value; + data_info->rollover_cnt = + out_obj->package.elements[LOG_ROLLOVER_CNT_IDX].integer.value; + data_info->reset_cnt = + out_obj->package.elements[LOG_RESET_CNT_IDX].integer.value; + + ret = 0; + +free_acpi_buffer: + kfree(out_obj); + + return ret; +} + +static int set_pfrt_log_level(int level, struct pfrt_log_device *pfrt_log_dev) +{ + acpi_handle handle = ACPI_HANDLE(pfrt_log_dev->parent_dev); + union acpi_object *out_obj, *obj, in_obj, in_buf; + enum pfru_dsm_status status, ext_status; + int ret = 0; + + memset(&in_obj, 0, sizeof(in_obj)); + memset(&in_buf, 0, sizeof(in_buf)); + in_obj.type = ACPI_TYPE_PACKAGE; + in_obj.package.count = 1; + in_obj.package.elements = &in_buf; + in_buf.type = ACPI_TYPE_INTEGER; + in_buf.integer.value = level; + + out_obj = acpi_evaluate_dsm_typed(handle, &pfrt_log_guid, + pfrt_log_dev->info.log_revid, PFRT_FUNC_SET_LEV, + &in_obj, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + obj = &out_obj->package.elements[0]; + status = obj->integer.value; + if (status != DSM_SUCCEED) { + obj = &out_obj->package.elements[1]; + ext_status = obj->integer.value; + dev_dbg(pfrt_log_dev->parent_dev, "Error Status:%d\n", status); + dev_dbg(pfrt_log_dev->parent_dev, "Error Extend Status:%d\n", ext_status); + ret = -EBUSY; + } + + kfree(out_obj); + + return ret; +} + +static int get_pfrt_log_level(struct pfrt_log_device *pfrt_log_dev) +{ + acpi_handle handle = ACPI_HANDLE(pfrt_log_dev->parent_dev); + union acpi_object *out_obj, *obj; + enum pfru_dsm_status status, ext_status; + int ret = -EBUSY; + + out_obj = acpi_evaluate_dsm_typed(handle, &pfrt_log_guid, + pfrt_log_dev->info.log_revid, PFRT_FUNC_GET_LEV, + NULL, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + obj = &out_obj->package.elements[0]; + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + status = obj->integer.value; + if (status != DSM_SUCCEED) { + obj = &out_obj->package.elements[1]; + ext_status = obj->integer.value; + dev_dbg(pfrt_log_dev->parent_dev, "Error Status:%d\n", status); + dev_dbg(pfrt_log_dev->parent_dev, "Error Extend Status:%d\n", ext_status); + goto free_acpi_buffer; + } + + obj = &out_obj->package.elements[2]; + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + ret = obj->integer.value; + +free_acpi_buffer: + kfree(out_obj); + + return ret; +} + +static int valid_log_level(u32 level) +{ + return level == PFRT_LOG_ERR || level == PFRT_LOG_WARN || + level == PFRT_LOG_INFO || level == PFRT_LOG_VERB; +} + +static int valid_log_type(u32 type) +{ + return type == PFRT_LOG_EXEC_IDX || type == PFRT_LOG_HISTORY_IDX; +} + +static inline int valid_log_revid(u32 id) +{ + return id == PFRT_REVID_1 || id == PFRT_REVID_2; +} + +static long pfrt_log_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct pfrt_log_device *pfrt_log_dev = to_pfrt_log_dev(file); + struct pfrt_log_data_info data_info; + struct pfrt_log_info info; + void __user *p; + int ret = 0; + + p = (void __user *)arg; + + switch (cmd) { + case PFRT_LOG_IOC_SET_INFO: + if (copy_from_user(&info, p, sizeof(info))) + return -EFAULT; + + if (valid_log_revid(info.log_revid)) + pfrt_log_dev->info.log_revid = info.log_revid; + + if (valid_log_level(info.log_level)) { + ret = set_pfrt_log_level(info.log_level, pfrt_log_dev); + if (ret < 0) + return ret; + + pfrt_log_dev->info.log_level = info.log_level; + } + + if (valid_log_type(info.log_type)) + pfrt_log_dev->info.log_type = info.log_type; + + return 0; + + case PFRT_LOG_IOC_GET_INFO: + info.log_level = get_pfrt_log_level(pfrt_log_dev); + if (ret < 0) + return ret; + + info.log_type = pfrt_log_dev->info.log_type; + info.log_revid = pfrt_log_dev->info.log_revid; + if (copy_to_user(p, &info, sizeof(info))) + return -EFAULT; + + return 0; + + case PFRT_LOG_IOC_GET_DATA_INFO: + ret = get_pfrt_log_data_info(&data_info, pfrt_log_dev); + if (ret) + return ret; + + if (copy_to_user(p, &data_info, sizeof(struct pfrt_log_data_info))) + return -EFAULT; + + return 0; + + default: + return -ENOTTY; + } +} + +static int +pfrt_log_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct pfrt_log_device *pfrt_log_dev; + struct pfrt_log_data_info info; + unsigned long psize, vsize; + phys_addr_t base_addr; + int ret; + + if (vma->vm_flags & VM_WRITE) + return -EROFS; + + /* changing from read to write with mprotect is not allowed */ + vma->vm_flags &= ~VM_MAYWRITE; + + pfrt_log_dev = to_pfrt_log_dev(file); + + ret = get_pfrt_log_data_info(&info, pfrt_log_dev); + if (ret) + return ret; + + base_addr = (phys_addr_t)((info.chunk2_addr_hi << 32) | info.chunk2_addr_lo); + /* pfrt update has not been launched yet */ + if (!base_addr) + return -ENODEV; + + psize = info.max_data_size; + /* base address and total buffer size must be page aligned */ + if (!PAGE_ALIGNED(base_addr) || !PAGE_ALIGNED(psize)) + return -ENODEV; + + vsize = vma->vm_end - vma->vm_start; + if (vsize > psize) + return -EINVAL; + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + if (io_remap_pfn_range(vma, vma->vm_start, PFN_DOWN(base_addr), + vsize, vma->vm_page_prot)) + return -EAGAIN; + + return 0; +} + +static const struct file_operations acpi_pfrt_log_fops = { + .owner = THIS_MODULE, + .mmap = pfrt_log_mmap, + .unlocked_ioctl = pfrt_log_ioctl, + .llseek = noop_llseek, +}; + +static int acpi_pfrt_log_remove(struct platform_device *pdev) +{ + struct pfrt_log_device *pfrt_log_dev = platform_get_drvdata(pdev); + + misc_deregister(&pfrt_log_dev->miscdev); + + return 0; +} + +static void pfrt_log_put_idx(void *data) +{ + struct pfrt_log_device *pfrt_log_dev = data; + + ida_free(&pfrt_log_ida, pfrt_log_dev->index); +} + +static int acpi_pfrt_log_probe(struct platform_device *pdev) +{ + acpi_handle handle = ACPI_HANDLE(&pdev->dev); + struct pfrt_log_device *pfrt_log_dev; + int ret; + + if (!acpi_has_method(handle, "_DSM")) { + dev_dbg(&pdev->dev, "Missing _DSM\n"); + return -ENODEV; + } + + pfrt_log_dev = devm_kzalloc(&pdev->dev, sizeof(*pfrt_log_dev), GFP_KERNEL); + if (!pfrt_log_dev) + return -ENOMEM; + + ret = ida_alloc(&pfrt_log_ida, GFP_KERNEL); + if (ret < 0) + return ret; + + pfrt_log_dev->index = ret; + ret = devm_add_action_or_reset(&pdev->dev, pfrt_log_put_idx, pfrt_log_dev); + if (ret) + return ret; + + pfrt_log_dev->info.log_revid = PFRT_DEFAULT_REV_ID; + pfrt_log_dev->parent_dev = &pdev->dev; + + pfrt_log_dev->miscdev.minor = MISC_DYNAMIC_MINOR; + pfrt_log_dev->miscdev.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, + "pfrt%d", + pfrt_log_dev->index); + if (!pfrt_log_dev->miscdev.name) + return -ENOMEM; + + pfrt_log_dev->miscdev.nodename = devm_kasprintf(&pdev->dev, GFP_KERNEL, + "acpi_pfr_telemetry%d", + pfrt_log_dev->index); + if (!pfrt_log_dev->miscdev.nodename) + return -ENOMEM; + + pfrt_log_dev->miscdev.fops = &acpi_pfrt_log_fops; + pfrt_log_dev->miscdev.parent = &pdev->dev; + + ret = misc_register(&pfrt_log_dev->miscdev); + if (ret) + return ret; + + platform_set_drvdata(pdev, pfrt_log_dev); + + return 0; +} + +static const struct acpi_device_id acpi_pfrt_log_ids[] = { + {"INTC1081"}, + {} +}; +MODULE_DEVICE_TABLE(acpi, acpi_pfrt_log_ids); + +static struct platform_driver acpi_pfrt_log_driver = { + .driver = { + .name = "pfr_telemetry", + .acpi_match_table = acpi_pfrt_log_ids, + }, + .probe = acpi_pfrt_log_probe, + .remove = acpi_pfrt_log_remove, +}; +module_platform_driver(acpi_pfrt_log_driver); + +MODULE_DESCRIPTION("Platform Firmware Runtime Update Telemetry driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/acpi/pfr_update.c b/drivers/acpi/pfr_update.c new file mode 100644 index 000000000000..6bb0b778b5da --- /dev/null +++ b/drivers/acpi/pfr_update.c @@ -0,0 +1,575 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ACPI Platform Firmware Runtime Update Device driver + * + * Copyright (C) 2021 Intel Corporation + * Author: Chen Yu <yu.c.chen@intel.com> + * + * pfr_update driver is used for Platform Firmware Runtime + * Update, which includes the code injection and driver update. + */ +#include <linux/acpi.h> +#include <linux/device.h> +#include <linux/efi.h> +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/idr.h> +#include <linux/miscdevice.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/string.h> +#include <linux/uaccess.h> +#include <linux/uio.h> +#include <linux/uuid.h> + +#include <uapi/linux/pfrut.h> + +#define PFRU_FUNC_STANDARD_QUERY 0 +#define PFRU_FUNC_QUERY_UPDATE_CAP 1 +#define PFRU_FUNC_QUERY_BUF 2 +#define PFRU_FUNC_START 3 + +#define PFRU_CODE_INJECT_TYPE 1 +#define PFRU_DRIVER_UPDATE_TYPE 2 + +#define PFRU_REVID_1 1 +#define PFRU_REVID_2 2 +#define PFRU_DEFAULT_REV_ID PFRU_REVID_1 + +enum cap_index { + CAP_STATUS_IDX = 0, + CAP_UPDATE_IDX = 1, + CAP_CODE_TYPE_IDX = 2, + CAP_FW_VER_IDX = 3, + CAP_CODE_RT_VER_IDX = 4, + CAP_DRV_TYPE_IDX = 5, + CAP_DRV_RT_VER_IDX = 6, + CAP_DRV_SVN_IDX = 7, + CAP_PLAT_ID_IDX = 8, + CAP_OEM_ID_IDX = 9, + CAP_OEM_INFO_IDX = 10, + CAP_NR_IDX +}; + +enum buf_index { + BUF_STATUS_IDX = 0, + BUF_EXT_STATUS_IDX = 1, + BUF_ADDR_LOW_IDX = 2, + BUF_ADDR_HI_IDX = 3, + BUF_SIZE_IDX = 4, + BUF_NR_IDX +}; + +enum update_index { + UPDATE_STATUS_IDX = 0, + UPDATE_EXT_STATUS_IDX = 1, + UPDATE_AUTH_TIME_LOW_IDX = 2, + UPDATE_AUTH_TIME_HI_IDX = 3, + UPDATE_EXEC_TIME_LOW_IDX = 4, + UPDATE_EXEC_TIME_HI_IDX = 5, + UPDATE_NR_IDX +}; + +enum pfru_start_action { + START_STAGE = 0, + START_ACTIVATE = 1, + START_STAGE_ACTIVATE = 2, +}; + +struct pfru_device { + u32 rev_id, index; + struct device *parent_dev; + struct miscdevice miscdev; +}; + +static DEFINE_IDA(pfru_ida); + +/* + * Manual reference: + * https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf + * + * pfru_guid is the parameter for _DSM method + */ +static const guid_t pfru_guid = + GUID_INIT(0xECF9533B, 0x4A3C, 0x4E89, 0x93, 0x9E, 0xC7, 0x71, + 0x12, 0x60, 0x1C, 0x6D); + +/* pfru_code_inj_guid is the UUID to identify code injection EFI capsule file */ +static const guid_t pfru_code_inj_guid = + GUID_INIT(0xB2F84B79, 0x7B6E, 0x4E45, 0x88, 0x5F, 0x3F, 0xB9, + 0xBB, 0x18, 0x54, 0x02); + +/* pfru_drv_update_guid is the UUID to identify driver update EFI capsule file */ +static const guid_t pfru_drv_update_guid = + GUID_INIT(0x4569DD8C, 0x75F1, 0x429A, 0xA3, 0xD6, 0x24, 0xDE, + 0x80, 0x97, 0xA0, 0xDF); + +static inline int pfru_valid_revid(u32 id) +{ + return id == PFRU_REVID_1 || id == PFRU_REVID_2; +} + +static inline struct pfru_device *to_pfru_dev(struct file *file) +{ + return container_of(file->private_data, struct pfru_device, miscdev); +} + +static int query_capability(struct pfru_update_cap_info *cap_hdr, + struct pfru_device *pfru_dev) +{ + acpi_handle handle = ACPI_HANDLE(pfru_dev->parent_dev); + union acpi_object *out_obj; + int ret = -EINVAL; + + out_obj = acpi_evaluate_dsm_typed(handle, &pfru_guid, + pfru_dev->rev_id, + PFRU_FUNC_QUERY_UPDATE_CAP, + NULL, ACPI_TYPE_PACKAGE); + if (!out_obj) + return ret; + + if (out_obj->package.count < CAP_NR_IDX || + out_obj->package.elements[CAP_STATUS_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[CAP_UPDATE_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[CAP_CODE_TYPE_IDX].type != ACPI_TYPE_BUFFER || + out_obj->package.elements[CAP_FW_VER_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[CAP_CODE_RT_VER_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[CAP_DRV_TYPE_IDX].type != ACPI_TYPE_BUFFER || + out_obj->package.elements[CAP_DRV_RT_VER_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[CAP_DRV_SVN_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[CAP_PLAT_ID_IDX].type != ACPI_TYPE_BUFFER || + out_obj->package.elements[CAP_OEM_ID_IDX].type != ACPI_TYPE_BUFFER || + out_obj->package.elements[CAP_OEM_INFO_IDX].type != ACPI_TYPE_BUFFER) + goto free_acpi_buffer; + + cap_hdr->status = out_obj->package.elements[CAP_STATUS_IDX].integer.value; + if (cap_hdr->status != DSM_SUCCEED) { + ret = -EBUSY; + dev_dbg(pfru_dev->parent_dev, "Error Status:%d\n", cap_hdr->status); + goto free_acpi_buffer; + } + + cap_hdr->update_cap = out_obj->package.elements[CAP_UPDATE_IDX].integer.value; + memcpy(&cap_hdr->code_type, + out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.pointer, + out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.length); + cap_hdr->fw_version = + out_obj->package.elements[CAP_FW_VER_IDX].integer.value; + cap_hdr->code_rt_version = + out_obj->package.elements[CAP_CODE_RT_VER_IDX].integer.value; + memcpy(&cap_hdr->drv_type, + out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.pointer, + out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.length); + cap_hdr->drv_rt_version = + out_obj->package.elements[CAP_DRV_RT_VER_IDX].integer.value; + cap_hdr->drv_svn = + out_obj->package.elements[CAP_DRV_SVN_IDX].integer.value; + memcpy(&cap_hdr->platform_id, + out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.pointer, + out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.length); + memcpy(&cap_hdr->oem_id, + out_obj->package.elements[CAP_OEM_ID_IDX].buffer.pointer, + out_obj->package.elements[CAP_OEM_ID_IDX].buffer.length); + cap_hdr->oem_info_len = + out_obj->package.elements[CAP_OEM_INFO_IDX].buffer.length; + + ret = 0; + +free_acpi_buffer: + kfree(out_obj); + + return ret; +} + +static int query_buffer(struct pfru_com_buf_info *info, + struct pfru_device *pfru_dev) +{ + acpi_handle handle = ACPI_HANDLE(pfru_dev->parent_dev); + union acpi_object *out_obj; + int ret = -EINVAL; + + out_obj = acpi_evaluate_dsm_typed(handle, &pfru_guid, + pfru_dev->rev_id, PFRU_FUNC_QUERY_BUF, + NULL, ACPI_TYPE_PACKAGE); + if (!out_obj) + return ret; + + if (out_obj->package.count < BUF_NR_IDX || + out_obj->package.elements[BUF_STATUS_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[BUF_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[BUF_ADDR_LOW_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[BUF_ADDR_HI_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[BUF_SIZE_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + info->status = out_obj->package.elements[BUF_STATUS_IDX].integer.value; + info->ext_status = + out_obj->package.elements[BUF_EXT_STATUS_IDX].integer.value; + if (info->status != DSM_SUCCEED) { + ret = -EBUSY; + dev_dbg(pfru_dev->parent_dev, "Error Status:%d\n", info->status); + dev_dbg(pfru_dev->parent_dev, "Error Extended Status:%d\n", info->ext_status); + + goto free_acpi_buffer; + } + + info->addr_lo = + out_obj->package.elements[BUF_ADDR_LOW_IDX].integer.value; + info->addr_hi = + out_obj->package.elements[BUF_ADDR_HI_IDX].integer.value; + info->buf_size = out_obj->package.elements[BUF_SIZE_IDX].integer.value; + + ret = 0; + +free_acpi_buffer: + kfree(out_obj); + + return ret; +} + +static int get_image_type(const struct efi_manage_capsule_image_header *img_hdr, + struct pfru_device *pfru_dev) +{ + const efi_guid_t *image_type_id = &img_hdr->image_type_id; + + /* check whether this is a code injection or driver update */ + if (guid_equal(image_type_id, &pfru_code_inj_guid)) + return PFRU_CODE_INJECT_TYPE; + + if (guid_equal(image_type_id, &pfru_drv_update_guid)) + return PFRU_DRIVER_UPDATE_TYPE; + + return -EINVAL; +} + +static int adjust_efi_size(const struct efi_manage_capsule_image_header *img_hdr, + int size) +{ + /* + * The (u64 hw_ins) was introduced in UEFI spec version 2, + * and (u64 capsule_support) was introduced in version 3. + * The size needs to be adjusted accordingly. That is to + * say, version 1 should subtract the size of hw_ins+capsule_support, + * and version 2 should sbstract the size of capsule_support. + */ + size += sizeof(struct efi_manage_capsule_image_header); + switch (img_hdr->ver) { + case 1: + return size - 2 * sizeof(u64); + + case 2: + return size - sizeof(u64); + + default: + /* only support version 1 and 2 */ + return -EINVAL; + } +} + +static bool applicable_image(const void *data, struct pfru_update_cap_info *cap, + struct pfru_device *pfru_dev) +{ + struct pfru_payload_hdr *payload_hdr; + const efi_capsule_header_t *cap_hdr = data; + const struct efi_manage_capsule_header *m_hdr; + const struct efi_manage_capsule_image_header *m_img_hdr; + const struct efi_image_auth *auth; + int type, size; + + /* + * If the code in the capsule is older than the current + * firmware code, the update will be rejected by the firmware, + * so check the version of it upfront without engaging the + * Management Mode update mechanism which may be costly. + */ + size = cap_hdr->headersize; + m_hdr = data + size; + /* + * Current data structure size plus variable array indicated + * by number of (emb_drv_cnt + payload_cnt) + */ + size += offsetof(struct efi_manage_capsule_header, offset_list) + + (m_hdr->emb_drv_cnt + m_hdr->payload_cnt) * sizeof(u64); + m_img_hdr = data + size; + + type = get_image_type(m_img_hdr, pfru_dev); + if (type < 0) + return false; + + size = adjust_efi_size(m_img_hdr, size); + if (size < 0) + return false; + + auth = data + size; + size += sizeof(u64) + auth->auth_info.hdr.len; + payload_hdr = (struct pfru_payload_hdr *)(data + size); + + /* finally compare the version */ + if (type == PFRU_CODE_INJECT_TYPE) + return payload_hdr->rt_ver >= cap->code_rt_version; + + return payload_hdr->rt_ver >= cap->drv_rt_version; +} + +static void print_update_debug_info(struct pfru_updated_result *result, + struct pfru_device *pfru_dev) +{ + dev_dbg(pfru_dev->parent_dev, "Update result:\n"); + dev_dbg(pfru_dev->parent_dev, "Authentication Time Low:%lld\n", + result->low_auth_time); + dev_dbg(pfru_dev->parent_dev, "Authentication Time High:%lld\n", + result->high_auth_time); + dev_dbg(pfru_dev->parent_dev, "Execution Time Low:%lld\n", + result->low_exec_time); + dev_dbg(pfru_dev->parent_dev, "Execution Time High:%lld\n", + result->high_exec_time); +} + +static int start_update(int action, struct pfru_device *pfru_dev) +{ + union acpi_object *out_obj, in_obj, in_buf; + struct pfru_updated_result update_result; + acpi_handle handle; + int ret = -EINVAL; + + memset(&in_obj, 0, sizeof(in_obj)); + memset(&in_buf, 0, sizeof(in_buf)); + in_obj.type = ACPI_TYPE_PACKAGE; + in_obj.package.count = 1; + in_obj.package.elements = &in_buf; + in_buf.type = ACPI_TYPE_INTEGER; + in_buf.integer.value = action; + + handle = ACPI_HANDLE(pfru_dev->parent_dev); + out_obj = acpi_evaluate_dsm_typed(handle, &pfru_guid, + pfru_dev->rev_id, PFRU_FUNC_START, + &in_obj, ACPI_TYPE_PACKAGE); + if (!out_obj) + return ret; + + if (out_obj->package.count < UPDATE_NR_IDX || + out_obj->package.elements[UPDATE_STATUS_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[UPDATE_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER || + out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + update_result.status = + out_obj->package.elements[UPDATE_STATUS_IDX].integer.value; + update_result.ext_status = + out_obj->package.elements[UPDATE_EXT_STATUS_IDX].integer.value; + + if (update_result.status != DSM_SUCCEED) { + ret = -EBUSY; + dev_dbg(pfru_dev->parent_dev, "Error Status:%d\n", update_result.status); + dev_dbg(pfru_dev->parent_dev, "Error Extended Status:%d\n", + update_result.ext_status); + + goto free_acpi_buffer; + } + + update_result.low_auth_time = + out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].integer.value; + update_result.high_auth_time = + out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].integer.value; + update_result.low_exec_time = + out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].integer.value; + update_result.high_exec_time = + out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].integer.value; + + print_update_debug_info(&update_result, pfru_dev); + ret = 0; + +free_acpi_buffer: + kfree(out_obj); + + return ret; +} + +static long pfru_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct pfru_update_cap_info cap_hdr; + struct pfru_device *pfru_dev = to_pfru_dev(file); + void __user *p = (void __user *)arg; + u32 rev; + int ret; + + switch (cmd) { + case PFRU_IOC_QUERY_CAP: + ret = query_capability(&cap_hdr, pfru_dev); + if (ret) + return ret; + + if (copy_to_user(p, &cap_hdr, sizeof(cap_hdr))) + return -EFAULT; + + return 0; + + case PFRU_IOC_SET_REV: + if (copy_from_user(&rev, p, sizeof(rev))) + return -EFAULT; + + if (!pfru_valid_revid(rev)) + return -EINVAL; + + pfru_dev->rev_id = rev; + + return 0; + + case PFRU_IOC_STAGE: + return start_update(START_STAGE, pfru_dev); + + case PFRU_IOC_ACTIVATE: + return start_update(START_ACTIVATE, pfru_dev); + + case PFRU_IOC_STAGE_ACTIVATE: + return start_update(START_STAGE_ACTIVATE, pfru_dev); + + default: + return -ENOTTY; + } +} + +static ssize_t pfru_write(struct file *file, const char __user *buf, + size_t len, loff_t *ppos) +{ + struct pfru_device *pfru_dev = to_pfru_dev(file); + struct pfru_update_cap_info cap; + struct pfru_com_buf_info buf_info; + phys_addr_t phy_addr; + struct iov_iter iter; + struct iovec iov; + char *buf_ptr; + int ret; + + ret = query_buffer(&buf_info, pfru_dev); + if (ret) + return ret; + + if (len > buf_info.buf_size) + return -EINVAL; + + iov.iov_base = (void __user *)buf; + iov.iov_len = len; + iov_iter_init(&iter, WRITE, &iov, 1, len); + + /* map the communication buffer */ + phy_addr = (phys_addr_t)((buf_info.addr_hi << 32) | buf_info.addr_lo); + buf_ptr = memremap(phy_addr, buf_info.buf_size, MEMREMAP_WB); + if (!buf_ptr) + return -ENOMEM; + + if (!copy_from_iter_full(buf_ptr, len, &iter)) { + ret = -EINVAL; + goto unmap; + } + + /* check if the capsule header has a valid version number */ + ret = query_capability(&cap, pfru_dev); + if (ret) + goto unmap; + + if (!applicable_image(buf_ptr, &cap, pfru_dev)) + ret = -EINVAL; + +unmap: + memunmap(buf_ptr); + + return ret ?: len; +} + +static const struct file_operations acpi_pfru_fops = { + .owner = THIS_MODULE, + .write = pfru_write, + .unlocked_ioctl = pfru_ioctl, + .llseek = noop_llseek, +}; + +static int acpi_pfru_remove(struct platform_device *pdev) +{ + struct pfru_device *pfru_dev = platform_get_drvdata(pdev); + + misc_deregister(&pfru_dev->miscdev); + + return 0; +} + +static void pfru_put_idx(void *data) +{ + struct pfru_device *pfru_dev = data; + + ida_free(&pfru_ida, pfru_dev->index); +} + +static int acpi_pfru_probe(struct platform_device *pdev) +{ + acpi_handle handle = ACPI_HANDLE(&pdev->dev); + struct pfru_device *pfru_dev; + int ret; + + if (!acpi_has_method(handle, "_DSM")) { + dev_dbg(&pdev->dev, "Missing _DSM\n"); + return -ENODEV; + } + + pfru_dev = devm_kzalloc(&pdev->dev, sizeof(*pfru_dev), GFP_KERNEL); + if (!pfru_dev) + return -ENOMEM; + + ret = ida_alloc(&pfru_ida, GFP_KERNEL); + if (ret < 0) + return ret; + + pfru_dev->index = ret; + ret = devm_add_action_or_reset(&pdev->dev, pfru_put_idx, pfru_dev); + if (ret) + return ret; + + pfru_dev->rev_id = PFRU_DEFAULT_REV_ID; + pfru_dev->parent_dev = &pdev->dev; + + pfru_dev->miscdev.minor = MISC_DYNAMIC_MINOR; + pfru_dev->miscdev.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, + "pfru%d", pfru_dev->index); + if (!pfru_dev->miscdev.name) + return -ENOMEM; + + pfru_dev->miscdev.nodename = devm_kasprintf(&pdev->dev, GFP_KERNEL, + "acpi_pfr_update%d", pfru_dev->index); + if (!pfru_dev->miscdev.nodename) + return -ENOMEM; + + pfru_dev->miscdev.fops = &acpi_pfru_fops; + pfru_dev->miscdev.parent = &pdev->dev; + + ret = misc_register(&pfru_dev->miscdev); + if (ret) + return ret; + + platform_set_drvdata(pdev, pfru_dev); + + return 0; +} + +static const struct acpi_device_id acpi_pfru_ids[] = { + {"INTC1080"}, + {} +}; +MODULE_DEVICE_TABLE(acpi, acpi_pfru_ids); + +static struct platform_driver acpi_pfru_driver = { + .driver = { + .name = "pfr_update", + .acpi_match_table = acpi_pfru_ids, + }, + .probe = acpi_pfru_probe, + .remove = acpi_pfru_remove, +}; +module_platform_driver(acpi_pfru_driver); + +MODULE_DESCRIPTION("Platform Firmware Runtime Update device driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index c215bc8723d0..1331756d4cfc 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2502,42 +2502,33 @@ int acpi_bus_register_early_device(int type) } EXPORT_SYMBOL_GPL(acpi_bus_register_early_device); -static int acpi_bus_scan_fixed(void) +static void acpi_bus_scan_fixed(void) { - int result = 0; - - /* - * Enumerate all fixed-feature devices. - */ if (!(acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON)) { - struct acpi_device *device = NULL; - - result = acpi_add_single_object(&device, NULL, - ACPI_BUS_TYPE_POWER_BUTTON, false); - if (result) - return result; - - device->flags.match_driver = true; - result = device_attach(&device->dev); - if (result < 0) - return result; - - device_init_wakeup(&device->dev, true); + struct acpi_device *adev = NULL; + + acpi_add_single_object(&adev, NULL, ACPI_BUS_TYPE_POWER_BUTTON, + false); + if (adev) { + adev->flags.match_driver = true; + if (device_attach(&adev->dev) >= 0) + device_init_wakeup(&adev->dev, true); + else + dev_dbg(&adev->dev, "No driver\n"); + } } if (!(acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON)) { - struct acpi_device *device = NULL; - - result = acpi_add_single_object(&device, NULL, - ACPI_BUS_TYPE_SLEEP_BUTTON, false); - if (result) - return result; - - device->flags.match_driver = true; - result = device_attach(&device->dev); + struct acpi_device *adev = NULL; + + acpi_add_single_object(&adev, NULL, ACPI_BUS_TYPE_SLEEP_BUTTON, + false); + if (adev) { + adev->flags.match_driver = true; + if (device_attach(&adev->dev) < 0) + dev_dbg(&adev->dev, "No driver\n"); + } } - - return result < 0 ? result : 0; } static void __init acpi_get_spcr_uart_addr(void) @@ -2558,9 +2549,8 @@ static void __init acpi_get_spcr_uart_addr(void) static bool acpi_scan_initialized; -int __init acpi_scan_init(void) +void __init acpi_scan_init(void) { - int result; acpi_status status; struct acpi_table_stao *stao_ptr; @@ -2610,33 +2600,23 @@ int __init acpi_scan_init(void) /* * Enumerate devices in the ACPI namespace. */ - result = acpi_bus_scan(ACPI_ROOT_OBJECT); - if (result) - goto out; + if (acpi_bus_scan(ACPI_ROOT_OBJECT)) + goto unlock; acpi_root = acpi_fetch_acpi_dev(ACPI_ROOT_OBJECT); if (!acpi_root) - goto out; + goto unlock; /* Fixed feature devices do not exist on HW-reduced platform */ - if (!acpi_gbl_reduced_hardware) { - result = acpi_bus_scan_fixed(); - if (result) { - acpi_detach_data(acpi_root->handle, - acpi_scan_drop_device); - acpi_device_del(acpi_root); - acpi_bus_put_acpi_device(acpi_root); - goto out; - } - } + if (!acpi_gbl_reduced_hardware) + acpi_bus_scan_fixed(); acpi_turn_off_unused_power_resources(); acpi_scan_initialized = true; - out: +unlock: mutex_unlock(&acpi_scan_lock); - return result; } static struct acpi_probe_entry *ape; diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c index 25c2d0be953e..d589543875b8 100644 --- a/drivers/acpi/spcr.c +++ b/drivers/acpi/spcr.c @@ -107,8 +107,13 @@ int __init acpi_parse_spcr(bool enable_earlycon, bool enable_console) pr_info("SPCR table version %d\n", table->header.revision); if (table->serial_port.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { - switch (ACPI_ACCESS_BIT_WIDTH(( - table->serial_port.access_width))) { + u32 bit_width = table->serial_port.access_width; + + if (bit_width > ACPI_ACCESS_BIT_MAX) { + pr_err("Unacceptable wide SPCR Access Width. Defaulting to byte size\n"); + bit_width = ACPI_ACCESS_BIT_DEFAULT; + } + switch (ACPI_ACCESS_BIT_WIDTH((bit_width))) { default: pr_err("Unexpected SPCR Access Width. Defaulting to byte size\n"); fallthrough; diff --git a/include/linux/efi.h b/include/linux/efi.h index 0de9fb1fdc5a..ccd4d3f91c98 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -148,6 +148,52 @@ typedef struct { u32 imagesize; } efi_capsule_header_t; +/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER */ +struct efi_manage_capsule_header { + u32 ver; + u16 emb_drv_cnt; + u16 payload_cnt; + /* + * Variable-size array of the size given by the sum of + * emb_drv_cnt and payload_cnt. + */ + u64 offset_list[]; +} __packed; + +/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER */ +struct efi_manage_capsule_image_header { + u32 ver; + efi_guid_t image_type_id; + u8 image_index; + u8 reserved_bytes[3]; + u32 image_size; + u32 vendor_code_size; + /* hw_ins was introduced in version 2 */ + u64 hw_ins; + /* capsule_support was introduced in version 3 */ + u64 capsule_support; +} __packed; + +/* WIN_CERTIFICATE */ +struct win_cert { + u32 len; + u16 rev; + u16 cert_type; +}; + +/* WIN_CERTIFICATE_UEFI_GUID */ +struct win_cert_uefi_guid { + struct win_cert hdr; + efi_guid_t cert_type; + u8 cert_data[]; +}; + +/* EFI_FIRMWARE_IMAGE_AUTHENTICATION */ +struct efi_image_auth { + u64 mon_count; + struct win_cert_uefi_guid auth_info; +}; + /* * EFI capsule flags */ diff --git a/include/uapi/linux/pfrut.h b/include/uapi/linux/pfrut.h new file mode 100644 index 000000000000..42fa15f8310d --- /dev/null +++ b/include/uapi/linux/pfrut.h @@ -0,0 +1,262 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Platform Firmware Runtime Update header + * + * Copyright(c) 2021 Intel Corporation. All rights reserved. + */ +#ifndef __PFRUT_H__ +#define __PFRUT_H__ + +#include <linux/ioctl.h> +#include <linux/types.h> + +#define PFRUT_IOCTL_MAGIC 0xEE + +/** + * PFRU_IOC_SET_REV - _IOW(PFRUT_IOCTL_MAGIC, 0x01, unsigned int) + * + * Return: + * * 0 - success + * * -EFAULT - fail to read the revision id + * * -EINVAL - user provides an invalid revision id + * + * Set the Revision ID for Platform Firmware Runtime Update. + */ +#define PFRU_IOC_SET_REV _IOW(PFRUT_IOCTL_MAGIC, 0x01, unsigned int) + +/** + * PFRU_IOC_STAGE - _IOW(PFRUT_IOCTL_MAGIC, 0x02, unsigned int) + * + * Return: + * * 0 - success + * * -EINVAL - stage phase returns invalid result + * + * Stage a capsule image from communication buffer and perform authentication. + */ +#define PFRU_IOC_STAGE _IOW(PFRUT_IOCTL_MAGIC, 0x02, unsigned int) + +/** + * PFRU_IOC_ACTIVATE - _IOW(PFRUT_IOCTL_MAGIC, 0x03, unsigned int) + * + * Return: + * * 0 - success + * * -EINVAL - activate phase returns invalid result + * + * Activate a previously staged capsule image. + */ +#define PFRU_IOC_ACTIVATE _IOW(PFRUT_IOCTL_MAGIC, 0x03, unsigned int) + +/** + * PFRU_IOC_STAGE_ACTIVATE - _IOW(PFRUT_IOCTL_MAGIC, 0x04, unsigned int) + * + * Return: + * * 0 - success + * * -EINVAL - stage/activate phase returns invalid result. + * + * Perform both stage and activation action. + */ +#define PFRU_IOC_STAGE_ACTIVATE _IOW(PFRUT_IOCTL_MAGIC, 0x04, unsigned int) + +/** + * PFRU_IOC_QUERY_CAP - _IOR(PFRUT_IOCTL_MAGIC, 0x05, + * struct pfru_update_cap_info) + * + * Return: + * * 0 - success + * * -EINVAL - query phase returns invalid result + * * -EFAULT - the result fails to be copied to userspace + * + * Retrieve information on the Platform Firmware Runtime Update capability. + * The information is a struct pfru_update_cap_info. + */ +#define PFRU_IOC_QUERY_CAP _IOR(PFRUT_IOCTL_MAGIC, 0x05, struct pfru_update_cap_info) + +/** + * struct pfru_payload_hdr - Capsule file payload header. + * + * @sig: Signature of this capsule file. + * @hdr_version: Revision of this header structure. + * @hdr_size: Size of this header, including the OemHeader bytes. + * @hw_ver: The supported firmware version. + * @rt_ver: Version of the code injection image. + * @platform_id: A platform specific GUID to specify the platform what + * this capsule image support. + */ +struct pfru_payload_hdr { + __u32 sig; + __u32 hdr_version; + __u32 hdr_size; + __u32 hw_ver; + __u32 rt_ver; + __u8 platform_id[16]; +}; + +enum pfru_dsm_status { + DSM_SUCCEED = 0, + DSM_FUNC_NOT_SUPPORT = 1, + DSM_INVAL_INPUT = 2, + DSM_HARDWARE_ERR = 3, + DSM_RETRY_SUGGESTED = 4, + DSM_UNKNOWN = 5, + DSM_FUNC_SPEC_ERR = 6, +}; + +/** + * struct pfru_update_cap_info - Runtime update capability information. + * + * @status: Indicator of whether this query succeed. + * @update_cap: Bitmap to indicate whether the feature is supported. + * @code_type: A buffer containing an image type GUID. + * @fw_version: Platform firmware version. + * @code_rt_version: Code injection runtime version for anti-rollback. + * @drv_type: A buffer containing an image type GUID. + * @drv_rt_version: The version of the driver update runtime code. + * @drv_svn: The secure version number(SVN) of the driver update runtime code. + * @platform_id: A buffer containing a platform ID GUID. + * @oem_id: A buffer containing an OEM ID GUID. + * @oem_info_len: Length of the buffer containing the vendor specific information. + */ +struct pfru_update_cap_info { + __u32 status; + __u32 update_cap; + + __u8 code_type[16]; + __u32 fw_version; + __u32 code_rt_version; + + __u8 drv_type[16]; + __u32 drv_rt_version; + __u32 drv_svn; + + __u8 platform_id[16]; + __u8 oem_id[16]; + + __u32 oem_info_len; +}; + +/** + * struct pfru_com_buf_info - Communication buffer information. + * + * @status: Indicator of whether this query succeed. + * @ext_status: Implementation specific query result. + * @addr_lo: Low 32bit physical address of the communication buffer to hold + * a runtime update package. + * @addr_hi: High 32bit physical address of the communication buffer to hold + * a runtime update package. + * @buf_size: Maximum size in bytes of the communication buffer. + */ +struct pfru_com_buf_info { + __u32 status; + __u32 ext_status; + __u64 addr_lo; + __u64 addr_hi; + __u32 buf_size; +}; + +/** + * struct pfru_updated_result - Platform firmware runtime update result information. + * @status: Indicator of whether this update succeed. + * @ext_status: Implementation specific update result. + * @low_auth_time: Low 32bit value of image authentication time in nanosecond. + * @high_auth_time: High 32bit value of image authentication time in nanosecond. + * @low_exec_time: Low 32bit value of image execution time in nanosecond. + * @high_exec_time: High 32bit value of image execution time in nanosecond. + */ +struct pfru_updated_result { + __u32 status; + __u32 ext_status; + __u64 low_auth_time; + __u64 high_auth_time; + __u64 low_exec_time; + __u64 high_exec_time; +}; + +/** + * struct pfrt_log_data_info - Log Data from telemetry service. + * @status: Indicator of whether this update succeed. + * @ext_status: Implementation specific update result. + * @chunk1_addr_lo: Low 32bit physical address of the telemetry data chunk1 + * starting address. + * @chunk1_addr_hi: High 32bit physical address of the telemetry data chunk1 + * starting address. + * @chunk2_addr_lo: Low 32bit physical address of the telemetry data chunk2 + * starting address. + * @chunk2_addr_hi: High 32bit physical address of the telemetry data chunk2 + * starting address. + * @max_data_size: Maximum supported size of data of all data chunks combined. + * @chunk1_size: Data size in bytes of the telemetry data chunk1 buffer. + * @chunk2_size: Data size in bytes of the telemetry data chunk2 buffer. + * @rollover_cnt: Number of times telemetry data buffer is overwritten + * since telemetry buffer reset. + * @reset_cnt: Number of times telemetry services resets that results in + * rollover count and data chunk buffers are reset. + */ +struct pfrt_log_data_info { + __u32 status; + __u32 ext_status; + __u64 chunk1_addr_lo; + __u64 chunk1_addr_hi; + __u64 chunk2_addr_lo; + __u64 chunk2_addr_hi; + __u32 max_data_size; + __u32 chunk1_size; + __u32 chunk2_size; + __u32 rollover_cnt; + __u32 reset_cnt; +}; + +/** + * struct pfrt_log_info - Telemetry log information. + * @log_level: The telemetry log level. + * @log_type: The telemetry log type(history and execution). + * @log_revid: The telemetry log revision id. + */ +struct pfrt_log_info { + __u32 log_level; + __u32 log_type; + __u32 log_revid; +}; + +/** + * PFRT_LOG_IOC_SET_INFO - _IOW(PFRUT_IOCTL_MAGIC, 0x06, + * struct pfrt_log_info) + * + * Return: + * * 0 - success + * * -EFAULT - fail to get the setting parameter + * * -EINVAL - fail to set the log level + * + * Set the PFRT log level and log type. The input information is + * a struct pfrt_log_info. + */ +#define PFRT_LOG_IOC_SET_INFO _IOW(PFRUT_IOCTL_MAGIC, 0x06, struct pfrt_log_info) + +/** + * PFRT_LOG_IOC_GET_INFO - _IOR(PFRUT_IOCTL_MAGIC, 0x07, + * struct pfrt_log_info) + * + * Return: + * * 0 - success + * * -EINVAL - fail to get the log level + * * -EFAULT - fail to copy the result back to userspace + * + * Retrieve log level and log type of the telemetry. The information is + * a struct pfrt_log_info. + */ +#define PFRT_LOG_IOC_GET_INFO _IOR(PFRUT_IOCTL_MAGIC, 0x07, struct pfrt_log_info) + +/** + * PFRT_LOG_IOC_GET_DATA_INFO - _IOR(PFRUT_IOCTL_MAGIC, 0x08, + * struct pfrt_log_data_info) + * + * Return: + * * 0 - success + * * -EINVAL - fail to get the log buffer information + * * -EFAULT - fail to copy the log buffer information to userspace + * + * Retrieve data information about the telemetry. The information + * is a struct pfrt_log_data_info. + */ +#define PFRT_LOG_IOC_GET_DATA_INFO _IOR(PFRUT_IOCTL_MAGIC, 0x08, struct pfrt_log_data_info) + +#endif /* __PFRUT_H__ */ diff --git a/tools/power/acpi/.gitignore b/tools/power/acpi/.gitignore index 0b319fc8bb17..eada0297ef88 100644 --- a/tools/power/acpi/.gitignore +++ b/tools/power/acpi/.gitignore @@ -2,4 +2,5 @@ /acpidbg /acpidump /ec +/pfrut /include/ diff --git a/tools/power/acpi/Makefile b/tools/power/acpi/Makefile index a249c50ebf55..5ff1d9c864d0 100644 --- a/tools/power/acpi/Makefile +++ b/tools/power/acpi/Makefile @@ -9,18 +9,18 @@ include ../../scripts/Makefile.include .NOTPARALLEL: -all: acpidbg acpidump ec -clean: acpidbg_clean acpidump_clean ec_clean -install: acpidbg_install acpidump_install ec_install -uninstall: acpidbg_uninstall acpidump_uninstall ec_uninstall +all: acpidbg acpidump ec pfrut +clean: acpidbg_clean acpidump_clean ec_clean pfrut_clean +install: acpidbg_install acpidump_install ec_install pfrut_install +uninstall: acpidbg_uninstall acpidump_uninstall ec_uninstall pfrut_uninstall -acpidbg acpidump ec: FORCE +acpidbg acpidump ec pfrut: FORCE $(call descend,tools/$@,all) -acpidbg_clean acpidump_clean ec_clean: +acpidbg_clean acpidump_clean ec_clean pfrut_clean: $(call descend,tools/$(@:_clean=),clean) -acpidbg_install acpidump_install ec_install: +acpidbg_install acpidump_install ec_install pfrut_install: $(call descend,tools/$(@:_install=),install) -acpidbg_uninstall acpidump_uninstall ec_uninstall: +acpidbg_uninstall acpidump_uninstall ec_uninstall pfrut_uninstall: $(call descend,tools/$(@:_uninstall=),uninstall) .PHONY: FORCE diff --git a/tools/power/acpi/Makefile.rules b/tools/power/acpi/Makefile.rules index 1d7616f5d0ae..b71aada77688 100644 --- a/tools/power/acpi/Makefile.rules +++ b/tools/power/acpi/Makefile.rules @@ -9,7 +9,7 @@ objdir := $(OUTPUT)tools/$(TOOL)/ toolobjs := $(addprefix $(objdir),$(TOOL_OBJS)) $(OUTPUT)$(TOOL): $(toolobjs) FORCE $(ECHO) " LD " $(subst $(OUTPUT),,$@) - $(QUIET) $(LD) $(CFLAGS) $(LDFLAGS) $(toolobjs) -L$(OUTPUT) -o $@ + $(QUIET) $(LD) $(CFLAGS) $(toolobjs) $(LDFLAGS) -L$(OUTPUT) -o $@ $(ECHO) " STRIP " $(subst $(OUTPUT),,$@) $(QUIET) $(STRIPCMD) $@ diff --git a/tools/power/acpi/man/pfrut.8 b/tools/power/acpi/man/pfrut.8 new file mode 100644 index 000000000000..3db574770e8d --- /dev/null +++ b/tools/power/acpi/man/pfrut.8 @@ -0,0 +1,137 @@ +.TH "PFRUT" "8" "October 2021" "pfrut 1.0" "" +.hy +.SH Name +.PP +pfrut \- Platform Firmware Runtime Update and Telemetry tool +.SH SYNOPSIS +.PP +\f[B]pfrut\f[R] [\f[I]Options\f[R]] +.SH DESCRIPTION +.PP +The PFRUT(Platform Firmware Runtime Update and Telemetry) kernel interface is designed +to +.PD 0 +.P +.PD +interact with the platform firmware interface defined in the +.PD 0 +.P +.PD +Management Mode Firmware Runtime +Update (https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf) +.PD 0 +.P +.PD +\f[B]pfrut\f[R] is the tool to interact with the kernel interface. +.PD 0 +.P +.PD +.SH OPTIONS +.TP +.B \f[B]\-h\f[R], \f[B]\-\-help\f[R] +Display helper information. +.TP +.B \f[B]\-l\f[R], \f[B]\-\-load\f[R] +Load the capsule file into the system. +To be more specific, the capsule file will be copied to the +communication buffer. +.TP +.B \f[B]\-s\f[R], \f[B]\-\-stage\f[R] +Stage the capsule image from communication buffer into Management Mode +and perform authentication. +.TP +.B \f[B]\-a\f[R], \f[B]\-\-activate\f[R] +Activate a previous staged capsule image. +.TP +.B \f[B]\-u\f[R], \f[B]\-\-update\f[R] +Perform both stage and activation actions. +.TP +.B \f[B]\-q\f[R], \f[B]\-\-query\f[R] +Query the update capability. +.TP +.B \f[B]\-d\f[R], \f[B]\-\-setrev\f[R] +Set the revision ID of code injection/driver update. +.TP +.B \f[B]\-D\f[R], \f[B]\-\-setrevlog\f[R] +Set the revision ID of telemetry. +.TP +.B \f[B]\-G\f[R], \f[B]\-\-getloginfo\f[R] +Get telemetry log information and print it out. +.TP +.B \f[B]\-T\f[R], \f[B]\-\-type\f[R] +Set the telemetry log data type. +.TP +.B \f[B]\-L\f[R], \f[B]\-\-level\f[R] +Set the telemetry log level. +.TP +.B \f[B]\-R\f[R], \f[B]\-\-read\f[R] +Read all the telemetry data and print it out. +.SH EXAMPLES +.PP +\f[B]pfrut \-G\f[R] +.PP +log_level:4 +.PD 0 +.P +.PD +log_type:0 +.PD 0 +.P +.PD +log_revid:2 +.PD 0 +.P +.PD +max_data_size:65536 +.PD 0 +.P +.PD +chunk1_size:0 +.PD 0 +.P +.PD +chunk2_size:1401 +.PD 0 +.P +.PD +rollover_cnt:0 +.PD 0 +.P +.PD +reset_cnt:4 +.PP +\f[B]pfru \-q\f[R] +.PP +code injection image type:794bf8b2\-6e7b\-454e\-885f\-3fb9bb185402 +.PD 0 +.P +.PD +fw_version:0 +.PD 0 +.P +.PD +code_rt_version:1 +.PD 0 +.P +.PD +driver update image type:0e5f0b14\-f849\-7945\-ad81\-bc7b6d2bb245 +.PD 0 +.P +.PD +drv_rt_version:0 +.PD 0 +.P +.PD +drv_svn:0 +.PD 0 +.P +.PD +platform id:39214663\-b1a8\-4eaa\-9024\-f2bb53ea4723 +.PD 0 +.P +.PD +oem id:a36db54f\-ea2a\-e14e\-b7c4\-b5780e51ba3d +.PP +\f[B]pfrut \-l yours.cap \-u \-T 1 \-L 4\f[R] +.SH AUTHORS +Chen Yu. diff --git a/tools/power/acpi/tools/pfrut/Makefile b/tools/power/acpi/tools/pfrut/Makefile new file mode 100644 index 000000000000..61c1a96fd433 --- /dev/null +++ b/tools/power/acpi/tools/pfrut/Makefile @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0+ + +include ../../Makefile.config + +TOOL = pfrut +EXTRA_INSTALL = install-man +EXTRA_UNINSTALL = uninstall-man + +CFLAGS += -Wall -O2 +CFLAGS += -DPFRUT_HEADER='"../../../../../include/uapi/linux/pfrut.h"' +LDFLAGS += -luuid + +TOOL_OBJS = \ + pfrut.o + +include ../../Makefile.rules + +install-man: $(srctree)/man/pfrut.8 + $(ECHO) " INST " pfrut.8 + $(QUIET) $(INSTALL_DATA) -D $< $(DESTDIR)$(mandir)/man8/pfrut.8 +uninstall-man: + $(ECHO) " UNINST " pfrut.8 + $(QUIET) rm -f $(DESTDIR)$(mandir)/man8/pfrut.8 diff --git a/tools/power/acpi/tools/pfrut/pfrut.c b/tools/power/acpi/tools/pfrut/pfrut.c new file mode 100644 index 000000000000..d79c335594b2 --- /dev/null +++ b/tools/power/acpi/tools/pfrut/pfrut.c @@ -0,0 +1,424 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Platform Firmware Runtime Update tool to do Management + * Mode code injection/driver update and telemetry retrieval. + * + * This tool uses the interfaces provided by pfr_update and + * pfr_telemetry drivers. These interfaces are exposed via + * /dev/pfr_update and /dev/pfr_telemetry. Write operation + * on the /dev/pfr_update is to load the EFI capsule into + * kernel space. Mmap/read operations on /dev/pfr_telemetry + * could be used to read the telemetry data to user space. + */ +#define _GNU_SOURCE +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> +#include <getopt.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <uuid/uuid.h> +#include PFRUT_HEADER + +char *capsule_name; +int action, query_cap, log_type, log_level, log_read, log_getinfo, + revid, log_revid; +int set_log_level, set_log_type, + set_revid, set_log_revid; + +char *progname; + +#define LOG_ERR 0 +#define LOG_WARN 1 +#define LOG_INFO 2 +#define LOG_VERB 4 +#define LOG_EXEC_IDX 0 +#define LOG_HISTORY_IDX 1 +#define REVID_1 1 +#define REVID_2 2 + +static int valid_log_level(int level) +{ + return level == LOG_ERR || level == LOG_WARN || + level == LOG_INFO || level == LOG_VERB; +} + +static int valid_log_type(int type) +{ + return type == LOG_EXEC_IDX || type == LOG_HISTORY_IDX; +} + +static inline int valid_log_revid(int id) +{ + return id == REVID_1 || id == REVID_2; +} + +static void help(void) +{ + fprintf(stderr, + "usage: %s [OPTIONS]\n" + " code injection:\n" + " -l, --load\n" + " -s, --stage\n" + " -a, --activate\n" + " -u, --update [stage and activate]\n" + " -q, --query\n" + " -d, --revid update\n" + " telemetry:\n" + " -G, --getloginfo\n" + " -T, --type(0:execution, 1:history)\n" + " -L, --level(0, 1, 2, 4)\n" + " -R, --read\n" + " -D, --revid log\n", + progname); +} + +char *option_string = "l:sauqd:GT:L:RD:h"; +static struct option long_options[] = { + {"load", required_argument, 0, 'l'}, + {"stage", no_argument, 0, 's'}, + {"activate", no_argument, 0, 'a'}, + {"update", no_argument, 0, 'u'}, + {"query", no_argument, 0, 'q'}, + {"getloginfo", no_argument, 0, 'G'}, + {"type", required_argument, 0, 'T'}, + {"level", required_argument, 0, 'L'}, + {"read", no_argument, 0, 'R'}, + {"setrev", required_argument, 0, 'd'}, + {"setrevlog", required_argument, 0, 'D'}, + {"help", no_argument, 0, 'h'}, + {} +}; + +static void parse_options(int argc, char **argv) +{ + int option_index = 0; + char *pathname; + int opt; + + pathname = strdup(argv[0]); + progname = basename(pathname); + + while ((opt = getopt_long_only(argc, argv, option_string, + long_options, &option_index)) != -1) { + switch (opt) { + case 'l': + capsule_name = optarg; + break; + case 's': + action = 1; + break; + case 'a': + action = 2; + break; + case 'u': + action = 3; + break; + case 'q': + query_cap = 1; + break; + case 'G': + log_getinfo = 1; + break; + case 'T': + log_type = atoi(optarg); + set_log_type = 1; + break; + case 'L': + log_level = atoi(optarg); + set_log_level = 1; + break; + case 'R': + log_read = 1; + break; + case 'd': + revid = atoi(optarg); + set_revid = 1; + break; + case 'D': + log_revid = atoi(optarg); + set_log_revid = 1; + break; + case 'h': + help(); + exit(0); + default: + break; + } + } +} + +void print_cap(struct pfru_update_cap_info *cap) +{ + char *uuid; + + uuid = malloc(37); + if (!uuid) { + perror("Can not allocate uuid buffer\n"); + exit(1); + } + + uuid_unparse(cap->code_type, uuid); + printf("code injection image type:%s\n", uuid); + printf("fw_version:%d\n", cap->fw_version); + printf("code_rt_version:%d\n", cap->code_rt_version); + + uuid_unparse(cap->drv_type, uuid); + printf("driver update image type:%s\n", uuid); + printf("drv_rt_version:%d\n", cap->drv_rt_version); + printf("drv_svn:%d\n", cap->drv_svn); + + uuid_unparse(cap->platform_id, uuid); + printf("platform id:%s\n", uuid); + uuid_unparse(cap->oem_id, uuid); + printf("oem id:%s\n", uuid); + printf("oem information length:%d\n", cap->oem_info_len); + + free(uuid); +} + +int main(int argc, char *argv[]) +{ + int fd_update, fd_update_log, fd_capsule; + struct pfrt_log_data_info data_info; + struct pfrt_log_info info; + struct pfru_update_cap_info cap; + void *addr_map_capsule; + struct stat st; + char *log_buf; + int ret = 0; + + if (getuid() != 0) { + printf("Please run the tool as root - Exiting.\n"); + return 1; + } + + parse_options(argc, argv); + + fd_update = open("/dev/acpi_pfr_update0", O_RDWR); + if (fd_update < 0) { + printf("PFRU device not supported - Quit...\n"); + return 1; + } + + fd_update_log = open("/dev/acpi_pfr_telemetry0", O_RDWR); + if (fd_update_log < 0) { + printf("PFRT device not supported - Quit...\n"); + return 1; + } + + if (query_cap) { + ret = ioctl(fd_update, PFRU_IOC_QUERY_CAP, &cap); + if (ret) + perror("Query Update Capability info failed."); + else + print_cap(&cap); + + close(fd_update); + close(fd_update_log); + + return ret; + } + + if (log_getinfo) { + ret = ioctl(fd_update_log, PFRT_LOG_IOC_GET_DATA_INFO, &data_info); + if (ret) { + perror("Get telemetry data info failed."); + close(fd_update); + close(fd_update_log); + + return 1; + } + + ret = ioctl(fd_update_log, PFRT_LOG_IOC_GET_INFO, &info); + if (ret) { + perror("Get telemetry info failed."); + close(fd_update); + close(fd_update_log); + + return 1; + } + + printf("log_level:%d\n", info.log_level); + printf("log_type:%d\n", info.log_type); + printf("log_revid:%d\n", info.log_revid); + printf("max_data_size:%d\n", data_info.max_data_size); + printf("chunk1_size:%d\n", data_info.chunk1_size); + printf("chunk2_size:%d\n", data_info.chunk2_size); + printf("rollover_cnt:%d\n", data_info.rollover_cnt); + printf("reset_cnt:%d\n", data_info.reset_cnt); + + return 0; + } + + info.log_level = -1; + info.log_type = -1; + info.log_revid = -1; + + if (set_log_level) { + if (!valid_log_level(log_level)) { + printf("Invalid log level %d\n", + log_level); + } else { + info.log_level = log_level; + } + } + + if (set_log_type) { + if (!valid_log_type(log_type)) { + printf("Invalid log type %d\n", + log_type); + } else { + info.log_type = log_type; + } + } + + if (set_log_revid) { + if (!valid_log_revid(log_revid)) { + printf("Invalid log revid %d, unchanged.\n", + log_revid); + } else { + info.log_revid = log_revid; + } + } + + ret = ioctl(fd_update_log, PFRT_LOG_IOC_SET_INFO, &info); + if (ret) { + perror("Log information set failed.(log_level, log_type, log_revid)"); + close(fd_update); + close(fd_update_log); + + return 1; + } + + if (set_revid) { + ret = ioctl(fd_update, PFRU_IOC_SET_REV, &revid); + if (ret) { + perror("pfru update revid set failed"); + close(fd_update); + close(fd_update_log); + + return 1; + } + + printf("pfru update revid set to %d\n", revid); + } + + if (capsule_name) { + fd_capsule = open(capsule_name, O_RDONLY); + if (fd_capsule < 0) { + perror("Can not open capsule file..."); + close(fd_update); + close(fd_update_log); + + return 1; + } + + if (fstat(fd_capsule, &st) < 0) { + perror("Can not fstat capsule file..."); + close(fd_capsule); + close(fd_update); + close(fd_update_log); + + return 1; + } + + addr_map_capsule = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, + fd_capsule, 0); + if (addr_map_capsule == MAP_FAILED) { + perror("Failed to mmap capsule file."); + close(fd_capsule); + close(fd_update); + close(fd_update_log); + + return 1; + } + + ret = write(fd_update, (char *)addr_map_capsule, st.st_size); + printf("Load %d bytes of capsule file into the system\n", + ret); + + if (ret == -1) { + perror("Failed to load capsule file"); + close(fd_capsule); + close(fd_update); + close(fd_update_log); + + return 1; + } + + munmap(addr_map_capsule, st.st_size); + close(fd_capsule); + printf("Load done.\n"); + } + + if (action) { + if (action == 1) { + ret = ioctl(fd_update, PFRU_IOC_STAGE, NULL); + } else if (action == 2) { + ret = ioctl(fd_update, PFRU_IOC_ACTIVATE, NULL); + } else if (action == 3) { + ret = ioctl(fd_update, PFRU_IOC_STAGE_ACTIVATE, NULL); + } else { + close(fd_update); + close(fd_update_log); + + return 1; + } + printf("Update finished, return %d\n", ret); + } + + close(fd_update); + + if (log_read) { + void *p_mmap; + int max_data_sz; + + ret = ioctl(fd_update_log, PFRT_LOG_IOC_GET_DATA_INFO, &data_info); + if (ret) { + perror("Get telemetry data info failed."); + close(fd_update_log); + + return 1; + } + + max_data_sz = data_info.max_data_size; + if (!max_data_sz) { + printf("No telemetry data available.\n"); + close(fd_update_log); + + return 1; + } + + log_buf = malloc(max_data_sz + 1); + if (!log_buf) { + perror("log_buf allocate failed."); + close(fd_update_log); + + return 1; + } + + p_mmap = mmap(NULL, max_data_sz, PROT_READ, MAP_SHARED, fd_update_log, 0); + if (p_mmap == MAP_FAILED) { + perror("mmap error."); + close(fd_update_log); + + return 1; + } + + memcpy(log_buf, p_mmap, max_data_sz); + log_buf[max_data_sz] = '\0'; + printf("%s\n", log_buf); + free(log_buf); + + munmap(p_mmap, max_data_sz); + } + + close(fd_update_log); + + return 0; +} |