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-rw-r--r--drivers/firmware/Kconfig2
-rw-r--r--drivers/firmware/efi/efi-bgrt.c5
-rw-r--r--drivers/firmware/efi/efi.c14
-rw-r--r--drivers/firmware/efi/efibc.c12
-rw-r--r--drivers/firmware/efi/libstub/arm-stub.c5
-rw-r--r--drivers/firmware/efi/libstub/efi-stub-helper.c15
-rw-r--r--drivers/firmware/efi/libstub/efistub.h2
-rw-r--r--drivers/firmware/efi/libstub/fdt.c27
-rw-r--r--drivers/firmware/efi/libstub/tpm.c80
-rw-r--r--drivers/firmware/efi/tpm.c63
-rw-r--r--drivers/firmware/imx/imx-scu-irq.c3
-rw-r--r--drivers/firmware/pcdp.c5
-rw-r--r--drivers/firmware/pcdp.h5
13 files changed, 174 insertions, 64 deletions
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 35078c6f334a..53446e39a32c 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -256,7 +256,7 @@ config TI_SCI_PROTOCOL
config TRUSTED_FOUNDATIONS
bool "Trusted Foundations secure monitor support"
- depends on ARM
+ depends on ARM && CPU_V7
help
Some devices (including most early Tegra-based consumer devices on
the market) are booted with the Trusted Foundations secure monitor
diff --git a/drivers/firmware/efi/efi-bgrt.c b/drivers/firmware/efi/efi-bgrt.c
index a2384184a7de..b07c17643210 100644
--- a/drivers/firmware/efi/efi-bgrt.c
+++ b/drivers/firmware/efi/efi-bgrt.c
@@ -47,11 +47,6 @@ void __init efi_bgrt_init(struct acpi_table_header *table)
bgrt->version);
goto out;
}
- if (bgrt->status & 0xfe) {
- pr_notice("Ignoring BGRT: reserved status bits are non-zero %u\n",
- bgrt->status);
- goto out;
- }
if (bgrt->image_type != 0) {
pr_notice("Ignoring BGRT: invalid image type %u (expected 0)\n",
bgrt->image_type);
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 16b2137d117c..ad3b1f4866b3 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -52,6 +52,7 @@ struct efi __read_mostly efi = {
.mem_attr_table = EFI_INVALID_TABLE_ADDR,
.rng_seed = EFI_INVALID_TABLE_ADDR,
.tpm_log = EFI_INVALID_TABLE_ADDR,
+ .tpm_final_log = EFI_INVALID_TABLE_ADDR,
.mem_reserve = EFI_INVALID_TABLE_ADDR,
};
EXPORT_SYMBOL(efi);
@@ -484,6 +485,7 @@ static __initdata efi_config_table_type_t common_tables[] = {
{EFI_MEMORY_ATTRIBUTES_TABLE_GUID, "MEMATTR", &efi.mem_attr_table},
{LINUX_EFI_RANDOM_SEED_TABLE_GUID, "RNG", &efi.rng_seed},
{LINUX_EFI_TPM_EVENT_LOG_GUID, "TPMEventLog", &efi.tpm_log},
+ {LINUX_EFI_TPM_FINAL_LOG_GUID, "TPMFinalLog", &efi.tpm_final_log},
{LINUX_EFI_MEMRESERVE_TABLE_GUID, "MEMRESERVE", &efi.mem_reserve},
{NULL_GUID, NULL, NULL},
};
@@ -1009,14 +1011,16 @@ int __ref efi_mem_reserve_persistent(phys_addr_t addr, u64 size)
/* first try to find a slot in an existing linked list entry */
for (prsv = efi_memreserve_root->next; prsv; prsv = rsv->next) {
- rsv = __va(prsv);
+ rsv = memremap(prsv, sizeof(*rsv), MEMREMAP_WB);
index = atomic_fetch_add_unless(&rsv->count, 1, rsv->size);
if (index < rsv->size) {
rsv->entry[index].base = addr;
rsv->entry[index].size = size;
+ memunmap(rsv);
return 0;
}
+ memunmap(rsv);
}
/* no slot found - allocate a new linked list entry */
@@ -1024,7 +1028,13 @@ int __ref efi_mem_reserve_persistent(phys_addr_t addr, u64 size)
if (!rsv)
return -ENOMEM;
- rsv->size = EFI_MEMRESERVE_COUNT(PAGE_SIZE);
+ /*
+ * The memremap() call above assumes that a linux_efi_memreserve entry
+ * never crosses a page boundary, so let's ensure that this remains true
+ * even when kexec'ing a 4k pages kernel from a >4k pages kernel, by
+ * using SZ_4K explicitly in the size calculation below.
+ */
+ rsv->size = EFI_MEMRESERVE_COUNT(SZ_4K);
atomic_set(&rsv->count, 1);
rsv->entry[0].base = addr;
rsv->entry[0].size = size;
diff --git a/drivers/firmware/efi/efibc.c b/drivers/firmware/efi/efibc.c
index 61e099826cbb..35dccc88ac0a 100644
--- a/drivers/firmware/efi/efibc.c
+++ b/drivers/firmware/efi/efibc.c
@@ -43,11 +43,13 @@ static int efibc_set_variable(const char *name, const char *value)
efibc_str_to_str16(value, (efi_char16_t *)entry->var.Data);
memcpy(&entry->var.VendorGuid, &guid, sizeof(guid));
- ret = efivar_entry_set(entry,
- EFI_VARIABLE_NON_VOLATILE
- | EFI_VARIABLE_BOOTSERVICE_ACCESS
- | EFI_VARIABLE_RUNTIME_ACCESS,
- size, entry->var.Data, NULL);
+ ret = efivar_entry_set_safe(entry->var.VariableName,
+ entry->var.VendorGuid,
+ EFI_VARIABLE_NON_VOLATILE
+ | EFI_VARIABLE_BOOTSERVICE_ACCESS
+ | EFI_VARIABLE_RUNTIME_ACCESS,
+ false, size, entry->var.Data);
+
if (ret)
pr_err("failed to set %s EFI variable: 0x%x\n",
name, ret);
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index 04e6ecd72cd9..c382a48c6678 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* EFI stub implementation that is shared by arm and arm64 architectures.
* This should be #included by the EFI stub implementation files.
@@ -6,10 +7,6 @@
* Roy Franz <roy.franz@linaro.org
* Copyright (C) 2013 Red Hat, Inc.
* Mark Salter <msalter@redhat.com>
- *
- * This file is part of the Linux kernel, and is made available under the
- * terms of the GNU General Public License version 2.
- *
*/
#include <linux/efi.h>
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
index e4610e72b78f..1db780c0f07b 100644
--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -926,3 +926,18 @@ free_map:
fail:
return status;
}
+
+void *get_efi_config_table(efi_system_table_t *sys_table, efi_guid_t guid)
+{
+ efi_config_table_t *tables = (efi_config_table_t *)sys_table->tables;
+ int i;
+
+ for (i = 0; i < sys_table->nr_tables; i++) {
+ if (efi_guidcmp(tables[i].guid, guid) != 0)
+ continue;
+
+ return (void *)tables[i].table;
+ }
+
+ return NULL;
+}
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
index 1b1dfcaa6fb9..7f1556fd867d 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -65,6 +65,8 @@ efi_status_t check_platform_features(efi_system_table_t *sys_table_arg);
efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg);
+void *get_efi_config_table(efi_system_table_t *sys_table, efi_guid_t guid);
+
/* Helper macros for the usual case of using simple C variables: */
#ifndef fdt_setprop_inplace_var
#define fdt_setprop_inplace_var(fdt, node_offset, name, var) \
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index 5440ba17a1c5..0bf0190917e0 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -363,26 +363,17 @@ fail:
void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size)
{
- efi_guid_t fdt_guid = DEVICE_TREE_GUID;
- efi_config_table_t *tables;
- int i;
+ void *fdt;
- tables = (efi_config_table_t *)sys_table->tables;
+ fdt = get_efi_config_table(sys_table, DEVICE_TREE_GUID);
- for (i = 0; i < sys_table->nr_tables; i++) {
- void *fdt;
+ if (!fdt)
+ return NULL;
- if (efi_guidcmp(tables[i].guid, fdt_guid) != 0)
- continue;
-
- fdt = (void *)tables[i].table;
- if (fdt_check_header(fdt) != 0) {
- pr_efi_err(sys_table, "Invalid header detected on UEFI supplied FDT, ignoring ...\n");
- return NULL;
- }
- *fdt_size = fdt_totalsize(fdt);
- return fdt;
+ if (fdt_check_header(fdt) != 0) {
+ pr_efi_err(sys_table, "Invalid header detected on UEFI supplied FDT, ignoring ...\n");
+ return NULL;
}
-
- return NULL;
+ *fdt_size = fdt_totalsize(fdt);
+ return fdt;
}
diff --git a/drivers/firmware/efi/libstub/tpm.c b/drivers/firmware/efi/libstub/tpm.c
index 5bd04f75d8d6..eb9af83e4d59 100644
--- a/drivers/firmware/efi/libstub/tpm.c
+++ b/drivers/firmware/efi/libstub/tpm.c
@@ -57,31 +57,40 @@ void efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg)
#endif
-static void efi_retrieve_tpm2_eventlog_1_2(efi_system_table_t *sys_table_arg)
+void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table_arg)
{
efi_guid_t tcg2_guid = EFI_TCG2_PROTOCOL_GUID;
efi_guid_t linux_eventlog_guid = LINUX_EFI_TPM_EVENT_LOG_GUID;
efi_status_t status;
efi_physical_addr_t log_location = 0, log_last_entry = 0;
struct linux_efi_tpm_eventlog *log_tbl = NULL;
+ struct efi_tcg2_final_events_table *final_events_table;
unsigned long first_entry_addr, last_entry_addr;
size_t log_size, last_entry_size;
efi_bool_t truncated;
+ int version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;
void *tcg2_protocol = NULL;
+ int final_events_size = 0;
status = efi_call_early(locate_protocol, &tcg2_guid, NULL,
&tcg2_protocol);
if (status != EFI_SUCCESS)
return;
- status = efi_call_proto(efi_tcg2_protocol, get_event_log, tcg2_protocol,
- EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2,
- &log_location, &log_last_entry, &truncated);
- if (status != EFI_SUCCESS)
- return;
+ status = efi_call_proto(efi_tcg2_protocol, get_event_log,
+ tcg2_protocol, version, &log_location,
+ &log_last_entry, &truncated);
+
+ if (status != EFI_SUCCESS || !log_location) {
+ version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2;
+ status = efi_call_proto(efi_tcg2_protocol, get_event_log,
+ tcg2_protocol, version, &log_location,
+ &log_last_entry, &truncated);
+ if (status != EFI_SUCCESS || !log_location)
+ return;
+
+ }
- if (!log_location)
- return;
first_entry_addr = (unsigned long) log_location;
/*
@@ -96,8 +105,23 @@ static void efi_retrieve_tpm2_eventlog_1_2(efi_system_table_t *sys_table_arg)
* We need to calculate its size to deduce the full size of
* the logs.
*/
- last_entry_size = sizeof(struct tcpa_event) +
- ((struct tcpa_event *) last_entry_addr)->event_size;
+ if (version == EFI_TCG2_EVENT_LOG_FORMAT_TCG_2) {
+ /*
+ * The TCG2 log format has variable length entries,
+ * and the information to decode the hash algorithms
+ * back into a size is contained in the first entry -
+ * pass a pointer to the final entry (to calculate its
+ * size) and the first entry (so we know how long each
+ * digest is)
+ */
+ last_entry_size =
+ __calc_tpm2_event_size((void *)last_entry_addr,
+ (void *)(long)log_location,
+ false);
+ } else {
+ last_entry_size = sizeof(struct tcpa_event) +
+ ((struct tcpa_event *) last_entry_addr)->event_size;
+ }
log_size = log_last_entry - log_location + last_entry_size;
}
@@ -112,9 +136,37 @@ static void efi_retrieve_tpm2_eventlog_1_2(efi_system_table_t *sys_table_arg)
return;
}
+ /*
+ * Figure out whether any events have already been logged to the
+ * final events structure, and if so how much space they take up
+ */
+ final_events_table = get_efi_config_table(sys_table_arg,
+ LINUX_EFI_TPM_FINAL_LOG_GUID);
+ if (final_events_table && final_events_table->nr_events) {
+ struct tcg_pcr_event2_head *header;
+ int offset;
+ void *data;
+ int event_size;
+ int i = final_events_table->nr_events;
+
+ data = (void *)final_events_table;
+ offset = sizeof(final_events_table->version) +
+ sizeof(final_events_table->nr_events);
+
+ while (i > 0) {
+ header = data + offset + final_events_size;
+ event_size = __calc_tpm2_event_size(header,
+ (void *)(long)log_location,
+ false);
+ final_events_size += event_size;
+ i--;
+ }
+ }
+
memset(log_tbl, 0, sizeof(*log_tbl) + log_size);
log_tbl->size = log_size;
- log_tbl->version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2;
+ log_tbl->final_events_preboot_size = final_events_size;
+ log_tbl->version = version;
memcpy(log_tbl->log, (void *) first_entry_addr, log_size);
status = efi_call_early(install_configuration_table,
@@ -126,9 +178,3 @@ static void efi_retrieve_tpm2_eventlog_1_2(efi_system_table_t *sys_table_arg)
err_free:
efi_call_early(free_pool, log_tbl);
}
-
-void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table_arg)
-{
- /* Only try to retrieve the logs in 1.2 format. */
- efi_retrieve_tpm2_eventlog_1_2(sys_table_arg);
-}
diff --git a/drivers/firmware/efi/tpm.c b/drivers/firmware/efi/tpm.c
index 3a689b40ccc0..1d3f5ca3eaaf 100644
--- a/drivers/firmware/efi/tpm.c
+++ b/drivers/firmware/efi/tpm.c
@@ -4,11 +4,34 @@
* Thiebaud Weksteen <tweek@google.com>
*/
+#define TPM_MEMREMAP(start, size) early_memremap(start, size)
+#define TPM_MEMUNMAP(start, size) early_memunmap(start, size)
+
+#include <asm/early_ioremap.h>
#include <linux/efi.h>
#include <linux/init.h>
#include <linux/memblock.h>
+#include <linux/tpm_eventlog.h>
-#include <asm/early_ioremap.h>
+int efi_tpm_final_log_size;
+EXPORT_SYMBOL(efi_tpm_final_log_size);
+
+static int tpm2_calc_event_log_size(void *data, int count, void *size_info)
+{
+ struct tcg_pcr_event2_head *header;
+ int event_size, size = 0;
+
+ while (count > 0) {
+ header = data + size;
+ event_size = __calc_tpm2_event_size(header, size_info, true);
+ if (event_size == 0)
+ return -1;
+ size += event_size;
+ count--;
+ }
+
+ return size;
+}
/*
* Reserve the memory associated with the TPM Event Log configuration table.
@@ -16,22 +39,54 @@
int __init efi_tpm_eventlog_init(void)
{
struct linux_efi_tpm_eventlog *log_tbl;
+ struct efi_tcg2_final_events_table *final_tbl;
unsigned int tbl_size;
+ int ret = 0;
- if (efi.tpm_log == EFI_INVALID_TABLE_ADDR)
+ if (efi.tpm_log == EFI_INVALID_TABLE_ADDR) {
+ /*
+ * We can't calculate the size of the final events without the
+ * first entry in the TPM log, so bail here.
+ */
return 0;
+ }
log_tbl = early_memremap(efi.tpm_log, sizeof(*log_tbl));
if (!log_tbl) {
pr_err("Failed to map TPM Event Log table @ 0x%lx\n",
- efi.tpm_log);
+ efi.tpm_log);
efi.tpm_log = EFI_INVALID_TABLE_ADDR;
return -ENOMEM;
}
tbl_size = sizeof(*log_tbl) + log_tbl->size;
memblock_reserve(efi.tpm_log, tbl_size);
+
+ if (efi.tpm_final_log == EFI_INVALID_TABLE_ADDR)
+ goto out;
+
+ final_tbl = early_memremap(efi.tpm_final_log, sizeof(*final_tbl));
+
+ if (!final_tbl) {
+ pr_err("Failed to map TPM Final Event Log table @ 0x%lx\n",
+ efi.tpm_final_log);
+ efi.tpm_final_log = EFI_INVALID_TABLE_ADDR;
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ tbl_size = tpm2_calc_event_log_size((void *)efi.tpm_final_log
+ + sizeof(final_tbl->version)
+ + sizeof(final_tbl->nr_events),
+ final_tbl->nr_events,
+ log_tbl->log);
+ memblock_reserve((unsigned long)final_tbl,
+ tbl_size + sizeof(*final_tbl));
+ early_memunmap(final_tbl, sizeof(*final_tbl));
+ efi_tpm_final_log_size = tbl_size;
+
+out:
early_memunmap(log_tbl, sizeof(*log_tbl));
- return 0;
+ return ret;
}
diff --git a/drivers/firmware/imx/imx-scu-irq.c b/drivers/firmware/imx/imx-scu-irq.c
index 043833ad3c1a..687121f8c4d5 100644
--- a/drivers/firmware/imx/imx-scu-irq.c
+++ b/drivers/firmware/imx/imx-scu-irq.c
@@ -100,6 +100,9 @@ int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
struct imx_sc_rpc_msg *hdr = &msg.hdr;
int ret;
+ if (!imx_sc_irq_ipc_handle)
+ return -EPROBE_DEFER;
+
hdr->ver = IMX_SC_RPC_VERSION;
hdr->svc = IMX_SC_RPC_SVC_IRQ;
hdr->func = IMX_SC_IRQ_FUNC_ENABLE;
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index e83d6aec0c13..4adeb7a2bdf5 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Parse the EFI PCDP table to locate the console device.
*
@@ -5,10 +6,6 @@
* Khalid Aziz <khalid.aziz@hp.com>
* Alex Williamson <alex.williamson@hp.com>
* Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/acpi.h>
diff --git a/drivers/firmware/pcdp.h b/drivers/firmware/pcdp.h
index e5530608e00d..ce75d1da9e84 100644
--- a/drivers/firmware/pcdp.h
+++ b/drivers/firmware/pcdp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Definitions for PCDP-defined console devices
*
@@ -7,10 +8,6 @@
* (c) Copyright 2002, 2004 Hewlett-Packard Development Company, L.P.
* Khalid Aziz <khalid.aziz@hp.com>
* Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#define PCDP_CONSOLE 0
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-28 22:30:54 +0000