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-rw-r--r--drivers/firmware/efi/cper.c4
-rw-r--r--drivers/firmware/efi/earlycon.c2
-rw-r--r--drivers/firmware/efi/efi-pstore.c43
-rw-r--r--drivers/firmware/efi/efi.c3
-rw-r--r--drivers/firmware/efi/libstub/Makefile2
-rw-r--r--drivers/firmware/efi/libstub/efi-stub-helper.c98
-rw-r--r--drivers/firmware/efi/libstub/efi-stub.c2
-rw-r--r--drivers/firmware/efi/libstub/efistub.h95
-rw-r--r--drivers/firmware/efi/libstub/fdt.c4
-rw-r--r--drivers/firmware/efi/libstub/loongarch.c2
-rw-r--r--drivers/firmware/efi/libstub/tpm.c82
-rw-r--r--drivers/firmware/efi/libstub/x86-stub.c30
-rw-r--r--drivers/firmware/efi/memmap.c9
-rw-r--r--drivers/firmware/efi/sysfb_efi.c2
14 files changed, 285 insertions, 93 deletions
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index 9b3884ff81..7d2cdd9e22 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -445,8 +445,8 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
printk("%saer_uncor_severity: 0x%08x\n",
pfx, aer->uncor_severity);
printk("%sTLP Header: %08x %08x %08x %08x\n", pfx,
- aer->header_log.dw0, aer->header_log.dw1,
- aer->header_log.dw2, aer->header_log.dw3);
+ aer->header_log.dw[0], aer->header_log.dw[1],
+ aer->header_log.dw[2], aer->header_log.dw[3]);
}
}
diff --git a/drivers/firmware/efi/earlycon.c b/drivers/firmware/efi/earlycon.c
index f80a9af3d1..d18a1a5de1 100644
--- a/drivers/firmware/efi/earlycon.c
+++ b/drivers/firmware/efi/earlycon.c
@@ -252,7 +252,7 @@ static int __init efi_earlycon_setup(struct earlycon_device *device,
if (si->lfb_depth != 32)
return -ENODEV;
- font = get_default_font(xres, yres, -1, -1);
+ font = get_default_font(xres, yres, NULL, NULL);
if (!font)
return -ENODEV;
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index e7b9ec6f8a..833cbb995d 100644
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -14,16 +14,43 @@ static unsigned int record_size = 1024;
module_param(record_size, uint, 0444);
MODULE_PARM_DESC(record_size, "size of each pstore UEFI var (in bytes, min/default=1024)");
-static bool efivars_pstore_disable =
- IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE);
-
-module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644);
-
#define PSTORE_EFI_ATTRIBUTES \
(EFI_VARIABLE_NON_VOLATILE | \
EFI_VARIABLE_BOOTSERVICE_ACCESS | \
EFI_VARIABLE_RUNTIME_ACCESS)
+static bool pstore_disable = IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE);
+
+static int efivars_pstore_init(void);
+static void efivars_pstore_exit(void);
+
+static int efi_pstore_disable_set(const char *val, const struct kernel_param *kp)
+{
+ int err;
+ bool old_pstore_disable = pstore_disable;
+
+ err = param_set_bool(val, kp);
+ if (err)
+ return err;
+
+ if (old_pstore_disable != pstore_disable) {
+ if (pstore_disable)
+ efivars_pstore_exit();
+ else
+ efivars_pstore_init();
+ }
+
+ return 0;
+}
+
+static const struct kernel_param_ops pstore_disable_ops = {
+ .set = efi_pstore_disable_set,
+ .get = param_get_bool,
+};
+
+module_param_cb(pstore_disable, &pstore_disable_ops, &pstore_disable, 0644);
+__MODULE_PARM_TYPE(pstore_disable, "bool");
+
static int efi_pstore_open(struct pstore_info *psi)
{
int err;
@@ -218,12 +245,12 @@ static struct pstore_info efi_pstore_info = {
.erase = efi_pstore_erase,
};
-static __init int efivars_pstore_init(void)
+static int efivars_pstore_init(void)
{
if (!efivar_supports_writes())
return 0;
- if (efivars_pstore_disable)
+ if (pstore_disable)
return 0;
/*
@@ -250,7 +277,7 @@ static __init int efivars_pstore_init(void)
return 0;
}
-static __exit void efivars_pstore_exit(void)
+static void efivars_pstore_exit(void)
{
if (!efi_pstore_info.bufsize)
return;
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 1ea14e86a7..fdf07dd6f4 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -599,7 +599,8 @@ static const efi_config_table_type_t common_tables[] __initconst = {
{EFI_MEMORY_ATTRIBUTES_TABLE_GUID, &efi_mem_attr_table, "MEMATTR" },
{LINUX_EFI_RANDOM_SEED_TABLE_GUID, &efi_rng_seed, "RNG" },
{LINUX_EFI_TPM_EVENT_LOG_GUID, &efi.tpm_log, "TPMEventLog" },
- {LINUX_EFI_TPM_FINAL_LOG_GUID, &efi.tpm_final_log, "TPMFinalLog" },
+ {EFI_TCG2_FINAL_EVENTS_TABLE_GUID, &efi.tpm_final_log, "TPMFinalLog" },
+ {EFI_CC_FINAL_EVENTS_TABLE_GUID, &efi.tpm_final_log, "CCFinalLog" },
{LINUX_EFI_MEMRESERVE_TABLE_GUID, &mem_reserve, "MEMRESERVE" },
{LINUX_EFI_INITRD_MEDIA_GUID, &initrd, "INITRD" },
{EFI_RT_PROPERTIES_TABLE_GUID, &rt_prop, "RTPROP" },
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index 73f4810f6d..31eb1e287c 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -105,7 +105,7 @@ lib-y := $(patsubst %.o,%.stub.o,$(lib-y))
# Even when -mbranch-protection=none is set, Clang will generate a
# .note.gnu.property for code-less object files (like lib/ctype.c),
# so work around this by explicitly removing the unwanted section.
-# https://bugs.llvm.org/show_bug.cgi?id=46480
+# https://llvm.org/pr46480
STUBCOPY_FLAGS-y += --remove-section=.note.gnu.property
STUBCOPY_RELOC-$(CONFIG_X86_32) := R_386_32
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
index 3dc2f9aaf0..de659f6a81 100644
--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -11,6 +11,7 @@
#include <linux/efi.h>
#include <linux/kernel.h>
+#include <linux/overflow.h>
#include <asm/efi.h>
#include <asm/setup.h>
@@ -201,7 +202,7 @@ void efi_apply_loadoptions_quirk(const void **load_options, u32 *load_options_si
*load_options_size = load_option_unpacked.optional_data_size;
}
-enum efistub_event {
+enum efistub_event_type {
EFISTUB_EVT_INITRD,
EFISTUB_EVT_LOAD_OPTIONS,
EFISTUB_EVT_COUNT,
@@ -227,54 +228,95 @@ static const struct {
},
};
+static_assert(sizeof(efi_tcg2_event_t) == sizeof(efi_cc_event_t));
+
+union efistub_event {
+ efi_tcg2_event_t tcg2_data;
+ efi_cc_event_t cc_data;
+};
+
+struct efistub_measured_event {
+ union efistub_event event_data;
+ TCG_PCClientTaggedEvent tagged_event __packed;
+};
+
static efi_status_t efi_measure_tagged_event(unsigned long load_addr,
unsigned long load_size,
- enum efistub_event event)
+ enum efistub_event_type event)
{
+ union {
+ efi_status_t
+ (__efiapi *hash_log_extend_event)(void *, u64, efi_physical_addr_t,
+ u64, const union efistub_event *);
+ struct { u32 hash_log_extend_event; } mixed_mode;
+ } method;
+ struct efistub_measured_event *evt;
+ int size = struct_size(evt, tagged_event.tagged_event_data,
+ events[event].event_data_len);
efi_guid_t tcg2_guid = EFI_TCG2_PROTOCOL_GUID;
efi_tcg2_protocol_t *tcg2 = NULL;
+ union efistub_event ev;
efi_status_t status;
+ void *protocol;
efi_bs_call(locate_protocol, &tcg2_guid, NULL, (void **)&tcg2);
if (tcg2) {
- struct efi_measured_event {
- efi_tcg2_event_t event_data;
- efi_tcg2_tagged_event_t tagged_event;
- u8 tagged_event_data[];
- } *evt;
- int size = sizeof(*evt) + events[event].event_data_len;
-
- status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, size,
- (void **)&evt);
- if (status != EFI_SUCCESS)
- goto fail;
-
- evt->event_data = (struct efi_tcg2_event){
+ ev.tcg2_data = (struct efi_tcg2_event){
.event_size = size,
- .event_header.header_size = sizeof(evt->event_data.event_header),
+ .event_header.header_size = sizeof(ev.tcg2_data.event_header),
.event_header.header_version = EFI_TCG2_EVENT_HEADER_VERSION,
.event_header.pcr_index = events[event].pcr_index,
.event_header.event_type = EV_EVENT_TAG,
};
+ protocol = tcg2;
+ method.hash_log_extend_event =
+ (void *)efi_table_attr(tcg2, hash_log_extend_event);
+ } else {
+ efi_guid_t cc_guid = EFI_CC_MEASUREMENT_PROTOCOL_GUID;
+ efi_cc_protocol_t *cc = NULL;
- evt->tagged_event = (struct efi_tcg2_tagged_event){
- .tagged_event_id = events[event].event_id,
- .tagged_event_data_size = events[event].event_data_len,
- };
-
- memcpy(evt->tagged_event_data, events[event].event_data,
- events[event].event_data_len);
+ efi_bs_call(locate_protocol, &cc_guid, NULL, (void **)&cc);
+ if (!cc)
+ return EFI_UNSUPPORTED;
- status = efi_call_proto(tcg2, hash_log_extend_event, 0,
- load_addr, load_size, &evt->event_data);
- efi_bs_call(free_pool, evt);
+ ev.cc_data = (struct efi_cc_event){
+ .event_size = size,
+ .event_header.header_size = sizeof(ev.cc_data.event_header),
+ .event_header.header_version = EFI_CC_EVENT_HEADER_VERSION,
+ .event_header.event_type = EV_EVENT_TAG,
+ };
+ status = efi_call_proto(cc, map_pcr_to_mr_index,
+ events[event].pcr_index,
+ &ev.cc_data.event_header.mr_index);
if (status != EFI_SUCCESS)
goto fail;
- return EFI_SUCCESS;
+
+ protocol = cc;
+ method.hash_log_extend_event =
+ (void *)efi_table_attr(cc, hash_log_extend_event);
}
- return EFI_UNSUPPORTED;
+ status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, size, (void **)&evt);
+ if (status != EFI_SUCCESS)
+ goto fail;
+
+ *evt = (struct efistub_measured_event) {
+ .event_data = ev,
+ .tagged_event.tagged_event_id = events[event].event_id,
+ .tagged_event.tagged_event_data_size = events[event].event_data_len,
+ };
+
+ memcpy(evt->tagged_event.tagged_event_data, events[event].event_data,
+ events[event].event_data_len);
+
+ status = efi_fn_call(&method, hash_log_extend_event, protocol, 0,
+ load_addr, load_size, &evt->event_data);
+ efi_bs_call(free_pool, evt);
+
+ if (status == EFI_SUCCESS)
+ return EFI_SUCCESS;
+
fail:
efi_warn("Failed to measure data for event %d: 0x%lx\n", event, status);
return status;
diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c
index f9c1e8a2bd..958a680e06 100644
--- a/drivers/firmware/efi/libstub/efi-stub.c
+++ b/drivers/firmware/efi/libstub/efi-stub.c
@@ -167,7 +167,7 @@ efi_status_t efi_stub_common(efi_handle_t handle,
si = setup_graphics();
- efi_retrieve_tpm2_eventlog();
+ efi_retrieve_eventlog();
/* Ask the firmware to clear memory on unclean shutdown */
efi_enable_reset_attack_mitigation();
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
index fc18fd649e..27abb4ce02 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -843,14 +843,14 @@ struct efi_tcg2_event {
/* u8[] event follows here */
} __packed;
-struct efi_tcg2_tagged_event {
- u32 tagged_event_id;
- u32 tagged_event_data_size;
- /* u8 tagged event data follows here */
-} __packed;
+/* from TCG PC Client Platform Firmware Profile Specification */
+typedef struct tdTCG_PCClientTaggedEvent {
+ u32 tagged_event_id;
+ u32 tagged_event_data_size;
+ u8 tagged_event_data[];
+} TCG_PCClientTaggedEvent;
typedef struct efi_tcg2_event efi_tcg2_event_t;
-typedef struct efi_tcg2_tagged_event efi_tcg2_tagged_event_t;
typedef union efi_tcg2_protocol efi_tcg2_protocol_t;
union efi_tcg2_protocol {
@@ -882,6 +882,87 @@ union efi_tcg2_protocol {
} mixed_mode;
};
+typedef struct {
+ u8 major;
+ u8 minor;
+} efi_cc_version_t;
+
+typedef struct {
+ u8 type;
+ u8 sub_type;
+} efi_cc_type_t;
+
+/* EFI CC type/subtype defines */
+#define EFI_CC_TYPE_NONE 0
+#define EFI_CC_TYPE_AMD_SEV 1
+#define EFI_CC_TYPE_INTEL_TDX 2
+
+typedef u32 efi_cc_mr_index_t;
+
+struct efi_cc_event {
+ u32 event_size;
+ struct {
+ u32 header_size;
+ u16 header_version;
+ u32 mr_index;
+ u32 event_type;
+ } __packed event_header;
+ /* u8[] event follows here */
+} __packed;
+
+typedef struct efi_cc_event efi_cc_event_t;
+
+typedef u32 efi_cc_event_log_bitmap_t;
+typedef u32 efi_cc_event_log_format_t;
+typedef u32 efi_cc_event_algorithm_bitmap_t;
+
+typedef struct {
+ u8 size;
+ efi_cc_version_t structure_version;
+ efi_cc_version_t protocol_version;
+ efi_cc_event_algorithm_bitmap_t hash_algorithm_bitmap;
+ efi_cc_event_log_bitmap_t supported_event_logs;
+ efi_cc_type_t cc_type;
+} efi_cc_boot_service_cap_t;
+
+#define EFI_CC_EVENT_HEADER_VERSION 1
+
+#define EFI_CC_BOOT_HASH_ALG_SHA384 0x00000004
+
+#define EFI_CC_EVENT_LOG_FORMAT_TCG_2 0x00000002
+
+typedef union efi_cc_protocol efi_cc_protocol_t;
+
+union efi_cc_protocol {
+ struct {
+ efi_status_t
+ (__efiapi *get_capability)(efi_cc_protocol_t *,
+ efi_cc_boot_service_cap_t *);
+
+ efi_status_t
+ (__efiapi *get_event_log)(efi_cc_protocol_t *,
+ efi_cc_event_log_format_t,
+ efi_physical_addr_t *,
+ efi_physical_addr_t *,
+ efi_bool_t *);
+
+ efi_status_t
+ (__efiapi *hash_log_extend_event)(efi_cc_protocol_t *, u64,
+ efi_physical_addr_t, u64,
+ const efi_cc_event_t *);
+
+ efi_status_t
+ (__efiapi *map_pcr_to_mr_index)(efi_cc_protocol_t *, u32,
+ efi_cc_mr_index_t *);
+ };
+ struct {
+ u32 get_capability;
+ u32 get_event_log;
+ u32 hash_log_extend_event;
+ u32 map_pcr_to_mr_index;
+ } mixed_mode;
+};
+
struct riscv_efi_boot_protocol {
u64 revision;
@@ -1061,7 +1142,7 @@ static inline void
efi_enable_reset_attack_mitigation(void) { }
#endif
-void efi_retrieve_tpm2_eventlog(void);
+void efi_retrieve_eventlog(void);
struct screen_info *alloc_screen_info(void);
struct screen_info *__alloc_screen_info(void);
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index 70e9789ff9..6a337f1f87 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -335,8 +335,8 @@ fail_free_new_fdt:
fail:
efi_free(fdt_size, fdt_addr);
-
- efi_bs_call(free_pool, priv.runtime_map);
+ if (!efi_novamap)
+ efi_bs_call(free_pool, priv.runtime_map);
return EFI_LOAD_ERROR;
}
diff --git a/drivers/firmware/efi/libstub/loongarch.c b/drivers/firmware/efi/libstub/loongarch.c
index 684c935463..d0ef93551c 100644
--- a/drivers/firmware/efi/libstub/loongarch.c
+++ b/drivers/firmware/efi/libstub/loongarch.c
@@ -41,7 +41,7 @@ static efi_status_t exit_boot_func(struct efi_boot_memmap *map, void *priv)
unsigned long __weak kernel_entry_address(unsigned long kernel_addr,
efi_loaded_image_t *image)
{
- return *(unsigned long *)(kernel_addr + 8) - VMLINUX_LOAD_ADDRESS + kernel_addr;
+ return *(unsigned long *)(kernel_addr + 8) - PHYSADDR(VMLINUX_LOAD_ADDRESS) + kernel_addr;
}
efi_status_t efi_boot_kernel(void *handle, efi_loaded_image_t *image,
diff --git a/drivers/firmware/efi/libstub/tpm.c b/drivers/firmware/efi/libstub/tpm.c
index 7acbac16ea..df3182f2e6 100644
--- a/drivers/firmware/efi/libstub/tpm.c
+++ b/drivers/firmware/efi/libstub/tpm.c
@@ -47,39 +47,18 @@ void efi_enable_reset_attack_mitigation(void)
#endif
-void efi_retrieve_tpm2_eventlog(void)
+static void efi_retrieve_tcg2_eventlog(int version, efi_physical_addr_t log_location,
+ efi_physical_addr_t log_last_entry,
+ efi_bool_t truncated,
+ struct efi_tcg2_final_events_table *final_events_table)
{
- 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 = NULL;
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;
- efi_tcg2_protocol_t *tcg2_protocol = NULL;
int final_events_size = 0;
- status = efi_bs_call(locate_protocol, &tcg2_guid, NULL,
- (void **)&tcg2_protocol);
- if (status != EFI_SUCCESS)
- return;
-
- status = efi_call_proto(tcg2_protocol, get_event_log, 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(tcg2_protocol, get_event_log, version,
- &log_location, &log_last_entry,
- &truncated);
- if (status != EFI_SUCCESS || !log_location)
- return;
-
- }
-
first_entry_addr = (unsigned long) log_location;
/*
@@ -93,8 +72,10 @@ void efi_retrieve_tpm2_eventlog(void)
* get_event_log only returns the address of the last entry.
* We need to calculate its size to deduce the full size of
* the logs.
+ *
+ * CC Event log also uses TCG2 format, handle it same as TPM2.
*/
- if (version == EFI_TCG2_EVENT_LOG_FORMAT_TCG_2) {
+ if (version > EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2) {
/*
* The TCG2 log format has variable length entries,
* and the information to decode the hash algorithms
@@ -127,8 +108,6 @@ void efi_retrieve_tpm2_eventlog(void)
* Figure out whether any events have already been logged to the
* final events structure, and if so how much space they take up
*/
- if (version == EFI_TCG2_EVENT_LOG_FORMAT_TCG_2)
- final_events_table = get_efi_config_table(LINUX_EFI_TPM_FINAL_LOG_GUID);
if (final_events_table && final_events_table->nr_events) {
struct tcg_pcr_event2_head *header;
int offset;
@@ -165,3 +144,50 @@ void efi_retrieve_tpm2_eventlog(void)
err_free:
efi_bs_call(free_pool, log_tbl);
}
+
+void efi_retrieve_eventlog(void)
+{
+ struct efi_tcg2_final_events_table *final_events_table = NULL;
+ efi_physical_addr_t log_location = 0, log_last_entry = 0;
+ efi_guid_t tpm2_guid = EFI_TCG2_PROTOCOL_GUID;
+ int version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;
+ efi_tcg2_protocol_t *tpm2 = NULL;
+ efi_bool_t truncated;
+ efi_status_t status;
+
+ status = efi_bs_call(locate_protocol, &tpm2_guid, NULL, (void **)&tpm2);
+ if (status == EFI_SUCCESS) {
+ status = efi_call_proto(tpm2, get_event_log, 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(tpm2, get_event_log, version,
+ &log_location, &log_last_entry,
+ &truncated);
+ } else {
+ final_events_table =
+ get_efi_config_table(EFI_TCG2_FINAL_EVENTS_TABLE_GUID);
+ }
+ } else {
+ efi_guid_t cc_guid = EFI_CC_MEASUREMENT_PROTOCOL_GUID;
+ efi_cc_protocol_t *cc = NULL;
+
+ status = efi_bs_call(locate_protocol, &cc_guid, NULL, (void **)&cc);
+ if (status != EFI_SUCCESS)
+ return;
+
+ version = EFI_CC_EVENT_LOG_FORMAT_TCG_2;
+ status = efi_call_proto(cc, get_event_log, version, &log_location,
+ &log_last_entry, &truncated);
+
+ final_events_table =
+ get_efi_config_table(EFI_CC_FINAL_EVENTS_TABLE_GUID);
+ }
+
+ if (status != EFI_SUCCESS || !log_location)
+ return;
+
+ efi_retrieve_tcg2_eventlog(version, log_location, log_last_entry,
+ truncated, final_events_table);
+}
diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c
index 19b51dc34f..1983fd3bf3 100644
--- a/drivers/firmware/efi/libstub/x86-stub.c
+++ b/drivers/firmware/efi/libstub/x86-stub.c
@@ -776,6 +776,26 @@ static void error(char *str)
efi_warn("Decompression failed: %s\n", str);
}
+static const char *cmdline_memmap_override;
+
+static efi_status_t parse_options(const char *cmdline)
+{
+ static const char opts[][14] = {
+ "mem=", "memmap=", "efi_fake_mem=", "hugepages="
+ };
+
+ for (int i = 0; i < ARRAY_SIZE(opts); i++) {
+ const char *p = strstr(cmdline, opts[i]);
+
+ if (p == cmdline || (p > cmdline && isspace(p[-1]))) {
+ cmdline_memmap_override = opts[i];
+ break;
+ }
+ }
+
+ return efi_parse_options(cmdline);
+}
+
static efi_status_t efi_decompress_kernel(unsigned long *kernel_entry)
{
unsigned long virt_addr = LOAD_PHYSICAL_ADDR;
@@ -807,6 +827,10 @@ static efi_status_t efi_decompress_kernel(unsigned long *kernel_entry)
!memcmp(efistub_fw_vendor(), ami, sizeof(ami))) {
efi_debug("AMI firmware v2.0 or older detected - disabling physical KASLR\n");
seed[0] = 0;
+ } else if (cmdline_memmap_override) {
+ efi_info("%s detected on the kernel command line - disabling physical KASLR\n",
+ cmdline_memmap_override);
+ seed[0] = 0;
}
boot_params_ptr->hdr.loadflags |= KASLR_FLAG;
@@ -883,7 +907,7 @@ void __noreturn efi_stub_entry(efi_handle_t handle,
}
#ifdef CONFIG_CMDLINE_BOOL
- status = efi_parse_options(CONFIG_CMDLINE);
+ status = parse_options(CONFIG_CMDLINE);
if (status != EFI_SUCCESS) {
efi_err("Failed to parse options\n");
goto fail;
@@ -892,7 +916,7 @@ void __noreturn efi_stub_entry(efi_handle_t handle,
if (!IS_ENABLED(CONFIG_CMDLINE_OVERRIDE)) {
unsigned long cmdline_paddr = ((u64)hdr->cmd_line_ptr |
((u64)boot_params->ext_cmd_line_ptr << 32));
- status = efi_parse_options((char *)cmdline_paddr);
+ status = parse_options((char *)cmdline_paddr);
if (status != EFI_SUCCESS) {
efi_err("Failed to parse options\n");
goto fail;
@@ -941,7 +965,7 @@ void __noreturn efi_stub_entry(efi_handle_t handle,
efi_random_get_seed();
- efi_retrieve_tpm2_eventlog();
+ efi_retrieve_eventlog();
setup_graphics(boot_params);
diff --git a/drivers/firmware/efi/memmap.c b/drivers/firmware/efi/memmap.c
index 3365944f79..34109fd86c 100644
--- a/drivers/firmware/efi/memmap.c
+++ b/drivers/firmware/efi/memmap.c
@@ -15,10 +15,6 @@
#include <asm/early_ioremap.h>
#include <asm/efi.h>
-#ifndef __efi_memmap_free
-#define __efi_memmap_free(phys, size, flags) do { } while (0)
-#endif
-
/**
* __efi_memmap_init - Common code for mapping the EFI memory map
* @data: EFI memory map data
@@ -51,11 +47,6 @@ int __init __efi_memmap_init(struct efi_memory_map_data *data)
return -ENOMEM;
}
- if (efi.memmap.flags & (EFI_MEMMAP_MEMBLOCK | EFI_MEMMAP_SLAB))
- __efi_memmap_free(efi.memmap.phys_map,
- efi.memmap.desc_size * efi.memmap.nr_map,
- efi.memmap.flags);
-
map.phys_map = data->phys_map;
map.nr_map = data->size / data->desc_size;
map.map_end = map.map + data->size;
diff --git a/drivers/firmware/efi/sysfb_efi.c b/drivers/firmware/efi/sysfb_efi.c
index 456d0e5eaf..cc807ed35a 100644
--- a/drivers/firmware/efi/sysfb_efi.c
+++ b/drivers/firmware/efi/sysfb_efi.c
@@ -336,7 +336,7 @@ static int efifb_add_links(struct fwnode_handle *fwnode)
if (!sup_np)
return 0;
- fwnode_link_add(fwnode, of_fwnode_handle(sup_np));
+ fwnode_link_add(fwnode, of_fwnode_handle(sup_np), 0);
of_node_put(sup_np);
return 0;