Commit 4d6f843a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull x86 EFI changes from Ingo Molnar:
 "Two fixes that should in principle increase robustness of our
  interaction with the EFI firmware, and a cleanup"

* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, efi: retry ExitBootServices() on failure
  efi: Convert runtime services function ptrs
  UEFI: Don't pass boot services regions to SetVirtualAddressMap()
parents 55a0d3ff d3768d88

arch/x86/boot/compressed/eboot.c

+17 −3
Original line number Diff line number Diff line
@@ -992,18 +992,20 @@ static efi_status_t exit_boot(struct boot_params *boot_params, 
	efi_memory_desc_t *mem_map;

	efi_status_t status;

	__u32 desc_version;

	bool called_exit = false;

	u8 nr_entries;

	int i;



	size = sizeof(*mem_map) * 32;



again:

	size += sizeof(*mem_map);

	size += sizeof(*mem_map) * 2;

	_size = size;

	status = low_alloc(size, 1, (unsigned long *)&mem_map);

	if (status != EFI_SUCCESS)

		return status;



get_map:

	status = efi_call_phys5(sys_table->boottime->get_memory_map, &size,

				mem_map, &key, &desc_size, &desc_version);

	if (status == EFI_BUFFER_TOO_SMALL) {
@@ -1029,9 +1031,21 @@ again: 
	/* Might as well exit boot services now */

	status = efi_call_phys2(sys_table->boottime->exit_boot_services,

				handle, key);

	if (status != EFI_SUCCESS)

	if (status != EFI_SUCCESS) {

		/*

		 * ExitBootServices() will fail if any of the event

		 * handlers change the memory map. In which case, we

		 * must be prepared to retry, but only once so that

		 * we're guaranteed to exit on repeated failures instead

		 * of spinning forever.

		 */

		if (called_exit)

			goto free_mem_map;



		called_exit = true;

		goto get_map;

	}



	/* Historic? */

	boot_params->alt_mem_k = 32 * 1024;

arch/x86/include/asm/efi.h

+14 −14
Original line number Diff line number Diff line
@@ -52,40 +52,40 @@ extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3, 
		     u64 arg4, u64 arg5, u64 arg6);



#define efi_call_phys0(f)			\

	efi_call0((void *)(f))

	efi_call0((f))

#define efi_call_phys1(f, a1)			\

	efi_call1((void *)(f), (u64)(a1))

	efi_call1((f), (u64)(a1))

#define efi_call_phys2(f, a1, a2)			\

	efi_call2((void *)(f), (u64)(a1), (u64)(a2))

	efi_call2((f), (u64)(a1), (u64)(a2))

#define efi_call_phys3(f, a1, a2, a3)				\

	efi_call3((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3))

	efi_call3((f), (u64)(a1), (u64)(a2), (u64)(a3))

#define efi_call_phys4(f, a1, a2, a3, a4)				\

	efi_call4((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),		\

	efi_call4((f), (u64)(a1), (u64)(a2), (u64)(a3),		\

		  (u64)(a4))

#define efi_call_phys5(f, a1, a2, a3, a4, a5)				\

	efi_call5((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),		\

	efi_call5((f), (u64)(a1), (u64)(a2), (u64)(a3),		\

		  (u64)(a4), (u64)(a5))

#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6)			\

	efi_call6((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),		\

	efi_call6((f), (u64)(a1), (u64)(a2), (u64)(a3),		\

		  (u64)(a4), (u64)(a5), (u64)(a6))



#define efi_call_virt0(f)				\

	efi_call0((void *)(efi.systab->runtime->f))

	efi_call0((efi.systab->runtime->f))

#define efi_call_virt1(f, a1)					\

	efi_call1((void *)(efi.systab->runtime->f), (u64)(a1))

	efi_call1((efi.systab->runtime->f), (u64)(a1))

#define efi_call_virt2(f, a1, a2)					\

	efi_call2((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2))

	efi_call2((efi.systab->runtime->f), (u64)(a1), (u64)(a2))

#define efi_call_virt3(f, a1, a2, a3)					\

	efi_call3((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

	efi_call3((efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

		  (u64)(a3))

#define efi_call_virt4(f, a1, a2, a3, a4)				\

	efi_call4((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

	efi_call4((efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

		  (u64)(a3), (u64)(a4))

#define efi_call_virt5(f, a1, a2, a3, a4, a5)				\

	efi_call5((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

	efi_call5((efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

		  (u64)(a3), (u64)(a4), (u64)(a5))

#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6)			\

	efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

	efi_call6((efi.systab->runtime->f), (u64)(a1), (u64)(a2), \

		  (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))



extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,

arch/x86/platform/efi/efi.c

+7 −0
Original line number Diff line number Diff line
@@ -929,6 +929,13 @@ void __init efi_enter_virtual_mode(void) 
			va = efi_ioremap(md->phys_addr, size,

					 md->type, md->attribute);



		if (!(md->attribute & EFI_MEMORY_RUNTIME)) {

			if (!va)

				pr_err("ioremap of 0x%llX failed!\n",

				       (unsigned long long)md->phys_addr);

			continue;

		}



		md->virt_addr = (u64) (unsigned long) va;



		if (!va) {

include/linux/efi.h

+14 −14
Original line number Diff line number Diff line
@@ -287,20 +287,20 @@ typedef struct { 


typedef struct {

	efi_table_hdr_t hdr;

	unsigned long get_time;

	unsigned long set_time;

	unsigned long get_wakeup_time;

	unsigned long set_wakeup_time;

	unsigned long set_virtual_address_map;

	unsigned long convert_pointer;

	unsigned long get_variable;

	unsigned long get_next_variable;

	unsigned long set_variable;

	unsigned long get_next_high_mono_count;

	unsigned long reset_system;

	unsigned long update_capsule;

	unsigned long query_capsule_caps;

	unsigned long query_variable_info;

	void *get_time;

	void *set_time;

	void *get_wakeup_time;

	void *set_wakeup_time;

	void *set_virtual_address_map;

	void *convert_pointer;

	void *get_variable;

	void *get_next_variable;

	void *set_variable;

	void *get_next_high_mono_count;

	void *reset_system;

	void *update_capsule;

	void *query_capsule_caps;

	void *query_variable_info;

} efi_runtime_services_t;



typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);

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