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authorMatt Fleming <matt.fleming@intel.com>2014-09-23 13:37:43 +0400
committerMatt Fleming <matt.fleming@intel.com>2014-09-24 01:01:55 +0400
commit84be880560fbbd0b6a6ef973bee85dbd4ca52198 (patch)
tree698006d43536d30809f6637153a5d1e993f9f510 /arch
parent3eddc69ffeba092d288c386646bfa5ec0fce25fd (diff)
downloadlinux-84be880560fbbd0b6a6ef973bee85dbd4ca52198.tar.xz
Revert "efi/x86: efistub: Move shared dependencies to <asm/efi.h>"
This reverts commit f23cf8bd5c1f ("efi/x86: efistub: Move shared dependencies to <asm/efi.h>") as well as the x86 parts of commit f4f75ad5741f ("efi: efistub: Convert into static library"). The road leading to these two reverts is long and winding. The above two commits were merged during the v3.17 merge window and turned the common EFI boot stub code into a static library. This necessitated making some symbols global in the x86 boot stub which introduced new entries into the early boot GOT. The problem was that we weren't fixing up the newly created GOT entries before invoking the EFI boot stub, which sometimes resulted in hangs or resets. This failure was reported by Maarten on his Macbook pro. The proposed fix was commit 9cb0e394234d ("x86/efi: Fixup GOT in all boot code paths"). However, that caused issues for Linus when booting his Sony Vaio Pro 11. It was subsequently reverted in commit f3670394c29f. So that leaves us back with Maarten's Macbook pro not booting. At this stage in the release cycle the least risky option is to revert the x86 EFI boot stub to the pre-merge window code structure where we explicitly #include efi-stub-helper.c instead of linking with the static library. The arm64 code remains unaffected. We can take another swing at the x86 parts for v3.18. Conflicts: arch/x86/include/asm/efi.h Tested-by: Josh Boyer <jwboyer@fedoraproject.org> Tested-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Tested-by: Leif Lindholm <leif.lindholm@linaro.org> [arm64] Tested-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>, Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/boot/compressed/Makefile3
-rw-r--r--arch/x86/boot/compressed/eboot.c7
-rw-r--r--arch/x86/boot/compressed/eboot.h16
-rw-r--r--arch/x86/include/asm/efi.h24
4 files changed, 23 insertions, 27 deletions
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 7a801a310e37..0fcd9133790c 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -33,8 +33,7 @@ VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone
ifeq ($(CONFIG_EFI_STUB), y)
- VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \
- $(objtree)/drivers/firmware/efi/libstub/lib.a
+ VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
endif
$(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index dca9842d8f91..b04f1e0e3fab 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -19,7 +19,10 @@
static efi_system_table_t *sys_table;
-struct efi_config *efi_early;
+static struct efi_config *efi_early;
+
+#define efi_call_early(f, ...) \
+ efi_early->call(efi_early->f, __VA_ARGS__);
#define BOOT_SERVICES(bits) \
static void setup_boot_services##bits(struct efi_config *c) \
@@ -280,6 +283,8 @@ void efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
}
}
+#include "../../../../drivers/firmware/efi/libstub/efi-stub-helper.c"
+
static void find_bits(unsigned long mask, u8 *pos, u8 *size)
{
u8 first, len;
diff --git a/arch/x86/boot/compressed/eboot.h b/arch/x86/boot/compressed/eboot.h
index d487e727f1ec..c88c31ecad12 100644
--- a/arch/x86/boot/compressed/eboot.h
+++ b/arch/x86/boot/compressed/eboot.h
@@ -103,4 +103,20 @@ struct efi_uga_draw_protocol {
void *blt;
};
+struct efi_config {
+ u64 image_handle;
+ u64 table;
+ u64 allocate_pool;
+ u64 allocate_pages;
+ u64 get_memory_map;
+ u64 free_pool;
+ u64 free_pages;
+ u64 locate_handle;
+ u64 handle_protocol;
+ u64 exit_boot_services;
+ u64 text_output;
+ efi_status_t (*call)(unsigned long, ...);
+ bool is64;
+} __packed;
+
#endif /* BOOT_COMPRESSED_EBOOT_H */
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 044a2fd3c5fe..0ec241ede5a2 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -159,30 +159,6 @@ static inline efi_status_t efi_thunk_set_virtual_address_map(
}
#endif /* CONFIG_EFI_MIXED */
-
-/* arch specific definitions used by the stub code */
-
-struct efi_config {
- u64 image_handle;
- u64 table;
- u64 allocate_pool;
- u64 allocate_pages;
- u64 get_memory_map;
- u64 free_pool;
- u64 free_pages;
- u64 locate_handle;
- u64 handle_protocol;
- u64 exit_boot_services;
- u64 text_output;
- efi_status_t (*call)(unsigned long, ...);
- bool is64;
-} __packed;
-
-extern struct efi_config *efi_early;
-
-#define efi_call_early(f, ...) \
- efi_early->call(efi_early->f, __VA_ARGS__);
-
extern bool efi_reboot_required(void);
#else