x86: EFI runtime service support: document for EFI runtime services (9ad65e47) · Commits · 戴 / test

Documentation/x86_64/boot-options.txt

+8 −1

Original line number	Original line	Diff line number	Diff line
	@@ -110,7 +110,7 @@ Idle loop

	Rebooting		Rebooting

	reboot=b[ios] \| t[riple] \| k[bd] \| a[cpi] [, [w]arm \| [c]old]		reboot=b[ios] \| t[riple] \| k[bd] \| a[cpi] \| e[fi] [, [w]arm \| [c]old]
	bios Use the CPU reboot vector for warm reset		bios Use the CPU reboot vector for warm reset
	warm Don't set the cold reboot flag		warm Don't set the cold reboot flag
	cold Set the cold reboot flag		cold Set the cold reboot flag
	@@ -119,6 +119,9 @@ Rebooting
	acpi Use the ACPI RESET_REG in the FADT. If ACPI is not configured or the		acpi Use the ACPI RESET_REG in the FADT. If ACPI is not configured or the
	ACPI reset does not work, the reboot path attempts the reset using		ACPI reset does not work, the reboot path attempts the reset using
	the keyboard controller.		the keyboard controller.
			efi Use efi reset_system runtime service. If EFI is not configured or the
			EFI reset does not work, the reboot path attempts the reset using
			the keyboard controller.

	Using warm reset will be much faster especially on big memory		Using warm reset will be much faster especially on big memory
	systems because the BIOS will not go through the memory check.		systems because the BIOS will not go through the memory check.
	@@ -303,4 +306,8 @@ Debugging
	newfallback: use new unwinder but fall back to old if it gets		newfallback: use new unwinder but fall back to old if it gets
	stuck (default)		stuck (default)

			EFI

			noefi Disable EFI support

	Miscellaneous		Miscellaneous

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -19,6 +19,10 @@ Mechanics:
	- Build the kernel with the following configuration.		- Build the kernel with the following configuration.
	CONFIG_FB_EFI=y		CONFIG_FB_EFI=y
	CONFIG_FRAMEBUFFER_CONSOLE=y		CONFIG_FRAMEBUFFER_CONSOLE=y
			If EFI runtime services are expected, the following configuration should
			be selected.
			CONFIG_EFI=y
			CONFIG_EFI_VARS=y or m # optional
	- Create a VFAT partition on the disk		- Create a VFAT partition on the disk
	- Copy the following to the VFAT partition:		- Copy the following to the VFAT partition:
	elilo bootloader with x86_64 support, elilo configuration file,		elilo bootloader with x86_64 support, elilo configuration file,
	@@ -27,3 +31,8 @@ Mechanics:
	can be found in the elilo sourceforge project.		can be found in the elilo sourceforge project.
	- Boot to EFI shell and invoke elilo choosing the kernel image built		- Boot to EFI shell and invoke elilo choosing the kernel image built
	in first step.		in first step.
			- If some or all EFI runtime services don't work, you can try following
			kernel command line parameters to turn off some or all EFI runtime
			services.
			noefi turn off all EFI runtime services
			reboot_type=k turn off EFI reboot runtime service