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efi/libstub: Use stricter typing for firmware function pointers

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We will soon remove another level of pointer casting, so let's make
sure all type handling involving firmware calls at boot time is correct.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: James Morse <james.morse@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: https://lkml.kernel.org/r/20191224151025.32482-12-ardb@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ard Biesheuvel
2019-12-24 16:10:11 +01:00
committed by Ingo Molnar
parent e8bd5ddf60
commit 960a8d0183
7 changed files with 28 additions and 18 deletions
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12
include/linux/efi.h
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@@ -382,7 +382,11 @@ union efi_pci_io_protocol {
void *allocate_buffer;
void *free_buffer;
void *flush;
void *get_location;
efi_status_t (*get_location)(efi_pci_io_protocol_t *,
unsigned long *segment_nr,
unsigned long *bus_nr,
unsigned long *device_nr,
unsigned long *function_nr);
void *attributes;
void *get_bar_attributes;
void *set_bar_attributes;
@@ -730,6 +734,8 @@ typedef struct {
u32 tables;
} efi_system_table_32_t;
typedef union efi_simple_text_output_protocol efi_simple_text_output_protocol_t;
typedef union {
struct {
efi_table_hdr_t hdr;
@@ -738,7 +744,7 @@ typedef union {
unsigned long con_in_handle;
unsigned long con_in;
unsigned long con_out_handle;
unsigned long con_out;
efi_simple_text_output_protocol_t *con_out;
unsigned long stderr_handle;
unsigned long stderr;
efi_runtime_services_t *runtime;
@@ -1337,8 +1343,6 @@ struct efivar_entry {
bool deleting;
};
typedef union efi_simple_text_output_protocol efi_simple_text_output_protocol_t;
union efi_simple_text_output_protocol {
struct {
void *reset;