修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/arm64/include/asm/efi.h
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@@ -25,6 +25,7 @@
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 ({									\
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 	efi_virtmap_load();						\
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 	__efi_fpsimd_begin();						\
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+	raw_spin_lock(&efi_rt_lock);					\
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 })
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 #define arch_efi_call_virt(p, f, args...)				\
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@@ -36,22 +37,28 @@
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 #define arch_efi_call_virt_teardown()					\
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 ({									\
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+	raw_spin_unlock(&efi_rt_lock);					\
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 	__efi_fpsimd_end();						\
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 	efi_virtmap_unload();						\
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 })
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+extern raw_spinlock_t efi_rt_lock;
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 efi_status_t __efi_rt_asm_wrapper(void *, const char *, ...);
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 #define ARCH_EFI_IRQ_FLAGS_MASK (PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT)
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-/* arch specific definitions used by the stub code */
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-
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 /*
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- * AArch64 requires the DTB to be 8-byte aligned in the first 512MiB from
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- * start of kernel and may not cross a 2MiB boundary. We set alignment to
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- * 2MiB so we know it won't cross a 2MiB boundary.
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+ * Even when Linux uses IRQ priorities for IRQ disabling, EFI does not.
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+ * And EFI shouldn't really play around with priority masking as it is not aware
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+ * which priorities the OS has assigned to its interrupts.
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  */
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-#define EFI_FDT_ALIGN	SZ_2M   /* used by allocate_new_fdt_and_exit_boot() */
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+#define arch_efi_save_flags(state_flags)		\
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+	((void)((state_flags) = read_sysreg(daif)))
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+
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+#define arch_efi_restore_flags(state_flags)	write_sysreg(state_flags, daif)
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+
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+
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+/* arch specific definitions used by the stub code */
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 /*
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  * In some configurations (e.g. VMAP_STACK && 64K pages), stacks built into the
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@@ -61,47 +68,31 @@
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 	(SEGMENT_ALIGN > THREAD_ALIGN ? SEGMENT_ALIGN : THREAD_ALIGN)
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 /* on arm64, the FDT may be located anywhere in system RAM */
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-static inline unsigned long efi_get_max_fdt_addr(unsigned long dram_base)
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+static inline unsigned long efi_get_max_fdt_addr(unsigned long image_addr)
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 {
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 	return ULONG_MAX;
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 }
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 /*
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  * On arm64, we have to ensure that the initrd ends up in the linear region,
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- * which is a 1 GB aligned region of size '1UL << (VA_BITS - 1)' that is
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+ * which is a 1 GB aligned region of size '1UL << (VA_BITS_MIN - 1)' that is
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  * guaranteed to cover the kernel Image.
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  *
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  * Since the EFI stub is part of the kernel Image, we can relax the
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- * usual requirements in Documentation/arm64/booting.txt, which still
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+ * usual requirements in Documentation/arm64/booting.rst, which still
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  * apply to other bootloaders, and are required for some kernel
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  * configurations.
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  */
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-static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base,
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-						    unsigned long image_addr)
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+static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
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 {
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-	return (image_addr & ~(SZ_1G - 1UL)) + (1UL << (VA_BITS - 1));
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+	return (image_addr & ~(SZ_1G - 1UL)) + (1UL << (VA_BITS_MIN - 1));
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 }
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-
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-#define efi_call_early(f, ...)		sys_table_arg->boottime->f(__VA_ARGS__)
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-#define __efi_call_early(f, ...)	f(__VA_ARGS__)
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-#define efi_call_runtime(f, ...)	sys_table_arg->runtime->f(__VA_ARGS__)
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-#define efi_is_64bit()			(true)
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-
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-#define efi_table_attr(table, attr, instance)				\
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-	((table##_t *)instance)->attr
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-
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-#define efi_call_proto(protocol, f, instance, ...)			\
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-	((protocol##_t *)instance)->f(instance, ##__VA_ARGS__)
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 #define alloc_screen_info(x...)		&screen_info
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-static inline void free_screen_info(efi_system_table_t *sys_table_arg,
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-				    struct screen_info *si)
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+static inline void free_screen_info(struct screen_info *si)
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 {
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 }
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-
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-/* redeclare as 'hidden' so the compiler will generate relative references */
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-extern struct screen_info screen_info __attribute__((__visibility__("hidden")));
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 static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
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 {