From 67cb8e113ecd63de38bede2a3b2357801b6b2c3f Mon Sep 17 00:00:00 2001 From: Thiebaud Weksteen Date: Wed, 20 Sep 2017 10:13:37 +0200 Subject: tpm: rename event log provider files Rename the current TPM Event Log provider files (ACPI and OF) for clarity. Signed-off-by: Thiebaud Weksteen Reviewed-by: Jarkko Sakkinen Reviewed-by: Javier Martinez Canillas Tested-by: Javier Martinez Canillas Tested-by: Jarkko Sakkinen Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen --- drivers/char/tpm/Makefile | 4 +- drivers/char/tpm/tpm_acpi.c | 112 ----------------------------------- drivers/char/tpm/tpm_eventlog_acpi.c | 112 +++++++++++++++++++++++++++++++++++ drivers/char/tpm/tpm_eventlog_of.c | 80 +++++++++++++++++++++++++ drivers/char/tpm/tpm_of.c | 80 ------------------------- 5 files changed, 194 insertions(+), 194 deletions(-) delete mode 100644 drivers/char/tpm/tpm_acpi.c create mode 100644 drivers/char/tpm/tpm_eventlog_acpi.c create mode 100644 drivers/char/tpm/tpm_eventlog_of.c delete mode 100644 drivers/char/tpm/tpm_of.c (limited to 'drivers/char/tpm') diff --git a/drivers/char/tpm/Makefile b/drivers/char/tpm/Makefile index 34b4bcf46f43..bce9e1402e87 100644 --- a/drivers/char/tpm/Makefile +++ b/drivers/char/tpm/Makefile @@ -6,8 +6,8 @@ obj-$(CONFIG_TCG_TPM) += tpm.o tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o tpm-chip.o tpm2-cmd.o \ tpm-dev-common.o tpmrm-dev.o tpm1_eventlog.o tpm2_eventlog.o \ tpm2-space.o -tpm-$(CONFIG_ACPI) += tpm_ppi.o tpm_acpi.o -tpm-$(CONFIG_OF) += tpm_of.o +tpm-$(CONFIG_ACPI) += tpm_ppi.o tpm_eventlog_acpi.o +tpm-$(CONFIG_OF) += tpm_eventlog_of.o obj-$(CONFIG_TCG_TIS_CORE) += tpm_tis_core.o obj-$(CONFIG_TCG_TIS) += tpm_tis.o obj-$(CONFIG_TCG_TIS_SPI) += tpm_tis_spi.o diff --git a/drivers/char/tpm/tpm_acpi.c b/drivers/char/tpm/tpm_acpi.c deleted file mode 100644 index acc990ba376a..000000000000 --- a/drivers/char/tpm/tpm_acpi.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - * Copyright (C) 2005 IBM Corporation - * - * Authors: - * Seiji Munetoh - * Stefan Berger - * Reiner Sailer - * Kylene Hall - * Nayna Jain - * - * Maintained by: - * - * Access to the event log extended by the TCG BIOS of PC platform - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include -#include -#include -#include -#include -#include -#include - -#include "tpm.h" - -struct acpi_tcpa { - struct acpi_table_header hdr; - u16 platform_class; - union { - struct client_hdr { - u32 log_max_len __packed; - u64 log_start_addr __packed; - } client; - struct server_hdr { - u16 reserved; - u64 log_max_len __packed; - u64 log_start_addr __packed; - } server; - }; -}; - -/* read binary bios log */ -int tpm_read_log_acpi(struct tpm_chip *chip) -{ - struct acpi_tcpa *buff; - acpi_status status; - void __iomem *virt; - u64 len, start; - struct tpm_bios_log *log; - - if (chip->flags & TPM_CHIP_FLAG_TPM2) - return -ENODEV; - - log = &chip->log; - - /* Unfortuntely ACPI does not associate the event log with a specific - * TPM, like PPI. Thus all ACPI TPMs will read the same log. - */ - if (!chip->acpi_dev_handle) - return -ENODEV; - - /* Find TCPA entry in RSDT (ACPI_LOGICAL_ADDRESSING) */ - status = acpi_get_table(ACPI_SIG_TCPA, 1, - (struct acpi_table_header **)&buff); - - if (ACPI_FAILURE(status)) - return -ENODEV; - - switch(buff->platform_class) { - case BIOS_SERVER: - len = buff->server.log_max_len; - start = buff->server.log_start_addr; - break; - case BIOS_CLIENT: - default: - len = buff->client.log_max_len; - start = buff->client.log_start_addr; - break; - } - if (!len) { - dev_warn(&chip->dev, "%s: TCPA log area empty\n", __func__); - return -EIO; - } - - /* malloc EventLog space */ - log->bios_event_log = kmalloc(len, GFP_KERNEL); - if (!log->bios_event_log) - return -ENOMEM; - - log->bios_event_log_end = log->bios_event_log + len; - - virt = acpi_os_map_iomem(start, len); - if (!virt) - goto err; - - memcpy_fromio(log->bios_event_log, virt, len); - - acpi_os_unmap_iomem(virt, len); - return 0; - -err: - kfree(log->bios_event_log); - log->bios_event_log = NULL; - return -EIO; - -} diff --git a/drivers/char/tpm/tpm_eventlog_acpi.c b/drivers/char/tpm/tpm_eventlog_acpi.c new file mode 100644 index 000000000000..acc990ba376a --- /dev/null +++ b/drivers/char/tpm/tpm_eventlog_acpi.c @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2005 IBM Corporation + * + * Authors: + * Seiji Munetoh + * Stefan Berger + * Reiner Sailer + * Kylene Hall + * Nayna Jain + * + * Maintained by: + * + * Access to the event log extended by the TCG BIOS of PC platform + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "tpm.h" + +struct acpi_tcpa { + struct acpi_table_header hdr; + u16 platform_class; + union { + struct client_hdr { + u32 log_max_len __packed; + u64 log_start_addr __packed; + } client; + struct server_hdr { + u16 reserved; + u64 log_max_len __packed; + u64 log_start_addr __packed; + } server; + }; +}; + +/* read binary bios log */ +int tpm_read_log_acpi(struct tpm_chip *chip) +{ + struct acpi_tcpa *buff; + acpi_status status; + void __iomem *virt; + u64 len, start; + struct tpm_bios_log *log; + + if (chip->flags & TPM_CHIP_FLAG_TPM2) + return -ENODEV; + + log = &chip->log; + + /* Unfortuntely ACPI does not associate the event log with a specific + * TPM, like PPI. Thus all ACPI TPMs will read the same log. + */ + if (!chip->acpi_dev_handle) + return -ENODEV; + + /* Find TCPA entry in RSDT (ACPI_LOGICAL_ADDRESSING) */ + status = acpi_get_table(ACPI_SIG_TCPA, 1, + (struct acpi_table_header **)&buff); + + if (ACPI_FAILURE(status)) + return -ENODEV; + + switch(buff->platform_class) { + case BIOS_SERVER: + len = buff->server.log_max_len; + start = buff->server.log_start_addr; + break; + case BIOS_CLIENT: + default: + len = buff->client.log_max_len; + start = buff->client.log_start_addr; + break; + } + if (!len) { + dev_warn(&chip->dev, "%s: TCPA log area empty\n", __func__); + return -EIO; + } + + /* malloc EventLog space */ + log->bios_event_log = kmalloc(len, GFP_KERNEL); + if (!log->bios_event_log) + return -ENOMEM; + + log->bios_event_log_end = log->bios_event_log + len; + + virt = acpi_os_map_iomem(start, len); + if (!virt) + goto err; + + memcpy_fromio(log->bios_event_log, virt, len); + + acpi_os_unmap_iomem(virt, len); + return 0; + +err: + kfree(log->bios_event_log); + log->bios_event_log = NULL; + return -EIO; + +} diff --git a/drivers/char/tpm/tpm_eventlog_of.c b/drivers/char/tpm/tpm_eventlog_of.c new file mode 100644 index 000000000000..4a2f8c79231e --- /dev/null +++ b/drivers/char/tpm/tpm_eventlog_of.c @@ -0,0 +1,80 @@ +/* + * Copyright 2012 IBM Corporation + * + * Author: Ashley Lai + * Nayna Jain + * + * Maintained by: + * + * Read the event log created by the firmware on PPC64 + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#include +#include +#include + +#include "tpm.h" + +int tpm_read_log_of(struct tpm_chip *chip) +{ + struct device_node *np; + const u32 *sizep; + const u64 *basep; + struct tpm_bios_log *log; + u32 size; + u64 base; + + log = &chip->log; + if (chip->dev.parent && chip->dev.parent->of_node) + np = chip->dev.parent->of_node; + else + return -ENODEV; + + if (of_property_read_bool(np, "powered-while-suspended")) + chip->flags |= TPM_CHIP_FLAG_ALWAYS_POWERED; + + sizep = of_get_property(np, "linux,sml-size", NULL); + basep = of_get_property(np, "linux,sml-base", NULL); + if (sizep == NULL && basep == NULL) + return -ENODEV; + if (sizep == NULL || basep == NULL) + return -EIO; + + /* + * For both vtpm/tpm, firmware has log addr and log size in big + * endian format. But in case of vtpm, there is a method called + * sml-handover which is run during kernel init even before + * device tree is setup. This sml-handover function takes care + * of endianness and writes to sml-base and sml-size in little + * endian format. For this reason, vtpm doesn't need conversion + * but physical tpm needs the conversion. + */ + if (of_property_match_string(np, "compatible", "IBM,vtpm") < 0) { + size = be32_to_cpup(sizep); + base = be64_to_cpup(basep); + } else { + size = *sizep; + base = *basep; + } + + if (size == 0) { + dev_warn(&chip->dev, "%s: Event log area empty\n", __func__); + return -EIO; + } + + log->bios_event_log = kmalloc(size, GFP_KERNEL); + if (!log->bios_event_log) + return -ENOMEM; + + log->bios_event_log_end = log->bios_event_log + size; + + memcpy(log->bios_event_log, __va(base), size); + + return 0; +} diff --git a/drivers/char/tpm/tpm_of.c b/drivers/char/tpm/tpm_of.c deleted file mode 100644 index 4a2f8c79231e..000000000000 --- a/drivers/char/tpm/tpm_of.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright 2012 IBM Corporation - * - * Author: Ashley Lai - * Nayna Jain - * - * Maintained by: - * - * Read the event log created by the firmware on PPC64 - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include -#include -#include - -#include "tpm.h" - -int tpm_read_log_of(struct tpm_chip *chip) -{ - struct device_node *np; - const u32 *sizep; - const u64 *basep; - struct tpm_bios_log *log; - u32 size; - u64 base; - - log = &chip->log; - if (chip->dev.parent && chip->dev.parent->of_node) - np = chip->dev.parent->of_node; - else - return -ENODEV; - - if (of_property_read_bool(np, "powered-while-suspended")) - chip->flags |= TPM_CHIP_FLAG_ALWAYS_POWERED; - - sizep = of_get_property(np, "linux,sml-size", NULL); - basep = of_get_property(np, "linux,sml-base", NULL); - if (sizep == NULL && basep == NULL) - return -ENODEV; - if (sizep == NULL || basep == NULL) - return -EIO; - - /* - * For both vtpm/tpm, firmware has log addr and log size in big - * endian format. But in case of vtpm, there is a method called - * sml-handover which is run during kernel init even before - * device tree is setup. This sml-handover function takes care - * of endianness and writes to sml-base and sml-size in little - * endian format. For this reason, vtpm doesn't need conversion - * but physical tpm needs the conversion. - */ - if (of_property_match_string(np, "compatible", "IBM,vtpm") < 0) { - size = be32_to_cpup(sizep); - base = be64_to_cpup(basep); - } else { - size = *sizep; - base = *basep; - } - - if (size == 0) { - dev_warn(&chip->dev, "%s: Event log area empty\n", __func__); - return -EIO; - } - - log->bios_event_log = kmalloc(size, GFP_KERNEL); - if (!log->bios_event_log) - return -ENOMEM; - - log->bios_event_log_end = log->bios_event_log + size; - - memcpy(log->bios_event_log, __va(base), size); - - return 0; -} -- cgit v1.2.3