2 # Serial device configuration
11 Select a default baudrate, where "default" has a driver-specific
12 meaning of either setting the baudrate for the early debug UART
13 in the SPL stage (most drivers) or for choosing a default baudrate
14 in the absence of an environment setting (serial_mxc.c).
16 config REQUIRE_SERIAL_CONSOLE
17 bool "Require a serial port for console"
18 # Running without a serial console is not supported by the
23 Require a serial port for the console, and panic if none is found
24 during serial port initialization (default y). Set this to n on
25 boards which have no debug serial port whatsoever.
27 config SPECIFY_CONSOLE_INDEX
28 bool "Specify the port number used for console"
29 default y if !DM_SERIAL || (SPL && !SPL_DM_SERIAL) || \
30 (TPL && !TPL_DM_SERIAL)
32 In various cases, we need to specify which of the UART devices that
33 a board or SoC has available are to be used for the console device
37 bool "Provide a serial driver"
41 In very space-constrained devices even the full UART driver is too
42 large. In this case the debug UART can still be used in some cases.
43 This option enables the full UART in U-Boot, so if is it disabled,
44 the full UART driver will be omitted, thus saving space.
46 config SPL_SERIAL_PRESENT
47 bool "Provide a serial driver in SPL"
48 depends on DM_SERIAL && SPL
51 In very space-constrained devices even the full UART driver is too
52 large. In this case the debug UART can still be used in some cases.
53 This option enables the full UART in SPL, so if is it disabled,
54 the full UART driver will be omitted, thus saving space.
56 config TPL_SERIAL_PRESENT
57 bool "Provide a serial driver in TPL"
58 depends on DM_SERIAL && TPL
61 In very space-constrained devices even the full UART driver is too
62 large. In this case the debug UART can still be used in some cases.
63 This option enables the full UART in TPL, so if is it disabled,
64 the full UART driver will be omitted, thus saving space.
66 # Logic to allow us to use the imply keyword to set what the default port
67 # should be. The default is otherwise 1.
87 int "UART used for console"
88 depends on SPECIFY_CONSOLE_INDEX
90 default 0 if CONS_INDEX_0
91 default 2 if CONS_INDEX_2
92 default 3 if CONS_INDEX_3
93 default 4 if CONS_INDEX_4
94 default 5 if CONS_INDEX_5
95 default 6 if CONS_INDEX_6
98 Set this to match the UART number of the serial console.
101 bool "Enable Driver Model for serial drivers"
105 Enable driver model for serial. This replaces
106 drivers/serial/serial.c with the serial uclass, which
107 implements serial_putc() etc. The uclass interface is
108 defined in include/serial.h.
110 config SERIAL_RX_BUFFER
111 bool "Enable RX buffer for serial input"
114 Enable RX buffer support for the serial driver. This enables
115 pasting longer strings, even when the RX FIFO of the UART is
116 not big enough (e.g. 16 bytes on the normal NS16550).
118 config SERIAL_RX_BUFFER_SIZE
120 depends on SERIAL_RX_BUFFER
123 The size of the RX buffer (needs to be power of 2)
125 config SERIAL_SEARCH_ALL
126 bool "Search for serial devices after default one failed"
129 The serial subsystem only searches for a single serial device
130 that was instantiated, but does not check whether it was probed
131 correctly. With this option set, we make successful probing
132 mandatory and search for fallback serial devices if the default
133 device does not work.
138 bool "Enable Driver Model for serial drivers in SPL"
139 depends on DM_SERIAL && SPL_DM
140 select SYS_SPL_MALLOC_F
143 Enable driver model for serial in SPL. This replaces
144 drivers/serial/serial.c with the serial uclass, which
145 implements serial_putc() etc. The uclass interface is
146 defined in include/serial.h.
149 bool "Enable Driver Model for serial drivers in TPL"
150 depends on DM_SERIAL && TPL_DM
151 select SYS_TPL_MALLOC_F
152 default y if TPL && DM_SERIAL
154 Enable driver model for serial in TPL. This replaces
155 drivers/serial/serial.c with the serial uclass, which
156 implements serial_putc() etc. The uclass interface is
157 defined in include/serial.h.
160 bool "Enable an early debug UART for debugging"
162 The debug UART is intended for use very early in U-Boot to debug
163 problems when an ICE or other debug mechanism is not available.
165 To use it you should:
166 - Make sure your UART supports this interface
167 - Enable CONFIG_DEBUG_UART
168 - Enable the CONFIG for your UART to tell it to provide this interface
169 (e.g. CONFIG_DEBUG_UART_NS16550)
170 - Define the required settings as needed (see below)
171 - Call debug_uart_init() before use
172 - Call debug_uart_putc() to output a character
174 Depending on your platform it may be possible to use this UART before
175 a stack is available.
177 If your UART does not support this interface you can probably add
178 support quite easily. Remember that you cannot use driver model and
179 it is preferred to use no stack.
181 You must not use this UART once driver model is working and the
182 serial drivers are up and running (done in serial_init()). Otherwise
183 the drivers may conflict and you will get strange output.
186 prompt "Select which UART will provide the debug UART"
187 depends on DEBUG_UART
188 default DEBUG_UART_NS16550
190 config DEBUG_UART_ALTERA_JTAGUART
191 bool "Altera JTAG UART"
193 Select this to enable a debug UART using the altera_jtag_uart driver.
194 You will need to provide parameters to make this work. The driver will
195 be available until the real driver model serial is running.
197 config DEBUG_UART_ALTERA_UART
200 Select this to enable a debug UART using the altera_uart driver.
201 You will need to provide parameters to make this work. The driver will
202 be available until the real driver model serial is running.
204 config DEBUG_UART_AR933X
205 bool "QCA/Atheros ar933x"
206 depends on AR933X_UART
208 Select this to enable a debug UART using the ar933x uart driver.
209 You will need to provide parameters to make this work. The
210 driver will be available until the real driver model serial is
213 config DEBUG_ARC_SERIAL
215 depends on ARC_SERIAL
217 Select this to enable a debug UART using the ARC UART driver.
218 You will need to provide parameters to make this work. The
219 driver will be available until the real driver model serial is
222 config DEBUG_UART_ATMEL
225 Select this to enable a debug UART using the atmel usart driver. You
226 will need to provide parameters to make this work. The driver will
227 be available until the real driver-model serial is running.
229 config DEBUG_UART_BCM6345
231 depends on BCM6345_SERIAL
233 Select this to enable a debug UART on BCM6345 SoCs. You
234 will need to provide parameters to make this work. The driver will
235 be available until the real driver model serial is running.
237 config DEBUG_UART_NS16550
240 Select this to enable a debug UART using the ns16550 driver. You
241 will need to provide parameters to make this work. The driver will
242 be available until the real driver model serial is running.
244 config DEBUG_EFI_CONSOLE
248 Select this to enable a debug console which calls back to EFI to
249 output to the console. This can be useful for early debugging of
250 U-Boot when running on top of EFI (Extensive Firmware Interface).
251 This is a type of BIOS used by PCs.
253 config DEBUG_UART_S5P
256 Select this to enable a debug UART using the serial_s5p driver. You
257 will need to provide parameters to make this work. The driver will
258 be available until the real driver-model serial is running.
260 config DEBUG_UART_MESON
262 depends on MESON_SERIAL
264 Select this to enable a debug UART using the serial_meson driver. You
265 will need to provide parameters to make this work. The driver will
266 be available until the real driver-model serial is running.
268 config DEBUG_UART_UARTLITE
269 bool "Xilinx Uartlite"
271 Select this to enable a debug UART using the serial_uartlite driver.
272 You will need to provide parameters to make this work. The driver will
273 be available until the real driver-model serial is running.
275 config DEBUG_UART_ARM_DCC
278 Select this to enable a debug UART using the ARM JTAG DCC port.
279 The DCC port can be used for very early debugging and doesn't require
280 any additional setting like address/baudrate/clock. On systems without
281 any serial interface this is the easiest way how to get console.
282 Every ARM core has own DCC port which is the part of debug interface.
283 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale
286 config DEBUG_MVEBU_A3700_UART
287 bool "Marvell Armada 3700"
289 Select this to enable a debug UART using the serial_mvebu driver. You
290 will need to provide parameters to make this work. The driver will
291 be available until the real driver-model serial is running.
293 config DEBUG_UART_ZYNQ
296 Select this to enable a debug UART using the serial_zynq driver. You
297 will need to provide parameters to make this work. The driver will
298 be available until the real driver-model serial is running.
300 config DEBUG_UART_APBUART
302 bool "Gaisler APBUART"
304 Select this to enable a debug UART using the serial_leon3 driver. You
305 will need to provide parameters to make this work. The driver will
306 be available until the real driver model serial is running.
308 config DEBUG_UART_PL010
311 Select this to enable a debug UART using the pl01x driver with the
312 PL010 UART type. You will need to provide parameters to make this
313 work. The driver will be available until the real driver model
316 config DEBUG_UART_PL011
319 Select this to enable a debug UART using the pl01x driver with the
320 PL011 UART type. You will need to provide parameters to make this
321 work. The driver will be available until the real driver model
324 config DEBUG_UART_PIC32
325 bool "Microchip PIC32"
326 depends on PIC32_SERIAL
328 Select this to enable a debug UART using the serial_pic32 driver. You
329 will need to provide parameters to make this work. The driver will
330 be available until the real driver model serial is running.
332 config DEBUG_UART_MXC
333 bool "IMX Serial port"
336 Select this to enable a debug UART using the serial_mxc driver. You
337 will need to provide parameters to make this work. The driver will
338 be available until the real driver model serial is running.
340 config DEBUG_UART_SANDBOX
342 depends on SANDBOX_SERIAL
344 Select this to enable the debug UART using the sandbox driver. This
345 provides basic serial output from the console without needing to
346 start up driver model. The driver will be available until the real
347 driver model serial is running.
349 config DEBUG_UART_SIFIVE
352 Select this to enable a debug UART using the serial_sifive driver. You
353 will need to provide parameters to make this work. The driver will
354 be available until the real driver-model serial is running.
356 config DEBUG_UART_STM32
357 bool "STMicroelectronics STM32"
358 depends on STM32_SERIAL
360 Select this to enable a debug UART using the serial_stm32 driver
361 You will need to provide parameters to make this work.
362 The driver will be available until the real driver model
365 config DEBUG_UART_UNIPHIER
366 bool "UniPhier on-chip UART"
367 depends on ARCH_UNIPHIER
369 Select this to enable a debug UART using the UniPhier on-chip UART.
370 You will need to provide DEBUG_UART_BASE to make this work. The
371 driver will be available until the real driver-model serial is
374 config DEBUG_UART_OMAP
377 Select this to enable a debug UART using the omap ns16550 driver.
378 You will need to provide parameters to make this work. The driver
379 will be available until the real driver model serial is running.
381 config DEBUG_UART_MTK
382 bool "MediaTek High-speed UART"
383 depends on MTK_SERIAL
385 Select this to enable a debug UART using the MediaTek High-speed
387 You will need to provide parameters to make this work. The
388 driver will be available until the real driver model serial is
393 config DEBUG_UART_BASE
394 hex "Base address of UART"
395 depends on DEBUG_UART
396 default 0 if DEBUG_UART_SANDBOX
398 This is the base address of your UART for memory-mapped UARTs.
400 A default should be provided by your board, but if not you will need
401 to use the correct value here.
403 config DEBUG_UART_CLOCK
404 int "UART input clock"
405 depends on DEBUG_UART
406 default 0 if DEBUG_UART_SANDBOX
408 The UART input clock determines the speed of the internal UART
409 circuitry. The baud rate is derived from this by dividing the input
412 A default should be provided by your board, but if not you will need
413 to use the correct value here.
415 config DEBUG_UART_SHIFT
416 int "UART register shift"
417 depends on DEBUG_UART
418 default 0 if DEBUG_UART
420 Some UARTs (notably ns16550) support different register layouts
421 where the registers are spaced either as bytes, words or some other
422 value. Use this value to specify the shift to use, where 0=byte
423 registers, 2=32-bit word registers, etc.
425 config DEBUG_UART_BOARD_INIT
426 bool "Enable board-specific debug UART init"
427 depends on DEBUG_UART
429 Some boards need to set things up before the debug UART can be used.
430 On these boards a call to debug_uart_init() is insufficient. When
431 this option is enabled, the function board_debug_uart_init() will
432 be called when debug_uart_init() is called. You can put any code
433 here that is needed to set up the UART ready for use, such as set
434 pin multiplexing or enable clocks.
436 config DEBUG_UART_ANNOUNCE
437 bool "Show a message when the debug UART starts up"
438 depends on DEBUG_UART
440 Enable this option to show a message when the debug UART is ready
441 for use. You will see a message like "<debug_uart> " as soon as
442 U-Boot has the UART ready for use (i.e. your code calls
443 debug_uart_init()). This can be useful just as a check that
444 everything is working.
446 config DEBUG_UART_SKIP_INIT
447 bool "Skip UART initialization"
448 depends on DEBUG_UART
450 Select this if the UART you want to use for debug output is already
451 initialized by the time U-Boot starts its execution.
453 config DEBUG_UART_NS16550_CHECK_ENABLED
454 bool "Check if UART is enabled on output"
455 depends on DEBUG_UART
456 depends on DEBUG_UART_NS16550
458 Select this if puts()/putc() might be called before the debug UART
459 has been initialized. If this is disabled, putc() might sit in a
460 tight loop if it is called before debug_uart_init() has been called.
462 Note that this does not work for every ns16550-compatible UART and
463 so has to be enabled carefully or you might notice lost characters.
465 config ALTERA_JTAG_UART
466 bool "Altera JTAG UART support"
469 Select this to enable an JTAG UART for Altera devices.The JTAG UART
470 core implements a method to communicate serial character streams
471 between a host PC and a Qsys system on an Altera FPGA. Please find
472 details on the "Embedded Peripherals IP User Guide" of Altera.
474 config ALTERA_JTAG_UART_BYPASS
475 bool "Bypass output when no connection"
476 depends on ALTERA_JTAG_UART
478 Bypass console output and keep going even if there is no JTAG
479 terminal connection with the host. The console output will resume
480 once the JTAG terminal is connected. Without the bypass, the console
481 output will wait forever until a JTAG terminal is connected. If you
485 bool "Altera UART support"
488 Select this to enable an UART for Altera devices. Please find
489 details on the "Embedded Peripherals IP User Guide" of Altera.
492 bool "QCA/Atheros ar933x UART support"
493 depends on DM_SERIAL && SOC_AR933X
495 Select this to enable UART support for QCA/Atheros ar933x
496 devices. This driver uses driver model and requires a device
497 tree binding to operate, please refer to the document at
498 doc/device-tree-bindings/serial/qca,ar9330-uart.txt.
501 bool "ARC UART support"
504 Select this to enable support for ARC UART now typically
505 only used in Synopsys DesignWare ARC simulators like nSIM.
508 bool "Atmel USART support"
510 Select this to enable USART support for Atmel SoCs. It can be
511 configured in the device tree, and input clock frequency can
512 be got from the clk node.
514 config SPL_UART_CLOCK
515 int "SPL fixed UART input clock"
516 depends on ATMEL_USART && SPL && !SPL_CLK
517 default 132096000 if ARCH_AT91
519 Provide a fixed clock value as input to the UART controller. This
520 might be needed on platforms which can't enable CONFIG_SPL_CLK
521 because of SPL image size restrictions.
523 config BCM283X_MU_SERIAL
524 bool "Support for BCM283x Mini-UART"
525 depends on DM_SERIAL && ARCH_BCM283X
528 Select this to enable Mini-UART support on BCM283X family of SoCs.
530 config BCM283X_PL011_SERIAL
531 bool "Support for BCM283x PL011 UART"
532 depends on PL01X_SERIAL && ARCH_BCM283X
535 Select this to enable an overriding PL011 driver for BCM283X SoCs
536 that supports automatic disable, so that it only gets used when
537 the UART is actually muxed.
539 config BCM6345_SERIAL
540 bool "Support for BCM6345 UART"
543 Select this to enable UART on BCM6345 SoCs.
545 config COREBOOT_SERIAL
546 bool "Coreboot UART support"
548 default y if SYS_COREBOOT
551 Select this to enable a ns16550-style UART where the platform data
552 comes from the coreboot 'sysinfo' tables. This allows U-Boot to have
553 a serial console on any platform without needing to change the
556 config FSL_LINFLEXUART
557 bool "Freescale Linflex UART support"
560 Select this to enable the Linflex serial module found on some
561 NXP SoCs like S32V234.
564 bool "Freescale LPUART support"
566 Select this to enable a Low Power UART for Freescale VF610 and
567 QorIQ Layerscape devices.
569 config MVEBU_A3700_UART
570 bool "UART support for Armada 3700"
573 Choose this option to add support for UART driver on the Marvell
574 Armada 3700 SoC. The base address is configured via DT.
577 bool "Freescale ColdFire UART support"
579 Choose this option to add support for UART driver on the ColdFire
580 SoC's family. The serial communication channel provides a full-duplex
581 asynchronous/synchronous receiver and transmitter deriving an
582 operating frequency from the internal bus clock or an external clock.
585 bool "IMX serial port support"
586 depends on MX5 || MX6 || MX7 || IMX8M
588 If you have a machine based on a Motorola IMX CPU you
589 can enable its onboard serial port by enabling this option.
591 config NULLDEV_SERIAL
592 bool "Null serial device"
594 Select this to enable null serial device support. A null serial
595 device merely acts as a placeholder for a serial device and does
596 nothing for all it's operation.
599 bool "Support for Microchip PIC32 on-chip UART"
600 depends on DM_SERIAL && MACH_PIC32
603 Support for the UART found on Microchip PIC32 SoC's.
606 bool "NS16550 UART or compatible"
608 Support NS16550 UART or compatible. This can be enabled in the
609 device tree with the correct input clock frequency. If the input
610 clock frequency is not defined in the device tree, the macro
611 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will
612 be used. It can be a constant or a function to get clock, eg,
615 config NS16550_DYNAMIC
616 bool "Allow NS16550 to be configured at runtime"
617 default y if SYS_COREBOOT || SYS_SLIMBOOTLOADER
619 Enable this option to allow device-tree control of the driver.
621 Normally this driver is controlled by the following options:
623 CONFIG_SYS_NS16550_PORT_MAPPED - indicates that port I/O is used for
624 access. If not enabled, then the UART is memory-mapped.
625 CONFIG_SYS_NS16550_MEM32 - if memory-mapped, indicates that 32-bit
626 access should be used (instead of 8-bit)
627 CONFIG_SYS_NS16550_REG_SIZE - indicates register width and also
628 endianness. If positive, big-endian access is used. If negative,
629 little-endian is used.
631 It is not a good practice for a driver to be statically configured,
632 since it prevents the same driver being used for different types of
633 UARTs in a system. This option avoids this problem at the cost of a
634 slightly increased code size.
636 config INTEL_MID_SERIAL
637 bool "Intel MID platform UART support"
638 depends on DM_SERIAL && OF_CONTROL
642 Select this to enable a UART for Intel MID platforms.
643 This uses the ns16550 driver as a library.
646 bool "ARM PL010 driver"
647 depends on !DM_SERIAL
649 Select this to enable a UART for platforms using PL010.
652 bool "ARM PL011 driver"
653 depends on !DM_SERIAL
655 Select this to enable a UART for platforms using PL011.
658 bool "ARM PL010 and PL011 driver"
661 Select this to enable a UART for platforms using PL010 or PL011.
663 config ROCKCHIP_SERIAL
664 bool "Rockchip on-chip UART support"
665 depends on DM_SERIAL && SPL_OF_PLATDATA
667 Select this to enable a debug UART for Rockchip devices when using
668 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt).
669 This uses the ns16550 driver, converting the platdata from of-platdata
670 to the ns16550 format.
672 config SANDBOX_SERIAL
673 bool "Sandbox UART support"
676 Select this to enable a seral UART for sandbox. This is required to
677 operate correctly, otherwise you will see no serial output from
678 sandbox. The emulated UART will display to the console and console
679 input will be fed into the UART. This allows you to interact with
682 The operation of the console is controlled by the -t command-line
683 flag. In raw mode, U-Boot sees all characters from the terminal
684 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C
685 is processed by the terminal, and terminates U-Boot. Valid options
688 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot
689 -t raw Raw mode, Ctrl-C is processed by U-Boot
690 -t cooked Cooked mode, Ctrl-C terminates
693 bool "Renesas SCIF UART support"
694 depends on SH || ARCH_RMOBILE
696 Select this to enable Renesas SCIF UART. To operate serial ports
697 on systems with RCar or SH SoCs, say Y to this option. If unsure,
700 config UNIPHIER_SERIAL
701 bool "Support for UniPhier on-chip UART"
702 depends on ARCH_UNIPHIER
705 If you have a UniPhier based board and want to use the on-chip
706 serial ports, say Y to this option. If unsure, say N.
708 config XILINX_UARTLITE
709 bool "Xilinx Uarlite support"
710 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx)
712 If you have a Xilinx based board and want to use the uartlite
713 serial ports, say Y to this option. If unsure, say N.
716 bool "Support for Amlogic Meson UART"
717 depends on DM_SERIAL && ARCH_MESON
719 If you have an Amlogic Meson based board and want to use the on-chip
720 serial ports, say Y to this option. If unsure, say N.
723 bool "Qualcomm on-chip UART"
726 Support Data Mover UART used on Qualcomm Snapdragon SoCs.
727 It should support all Qualcomm devices with UARTDM version 1.4,
728 for example APQ8016 and MSM8916.
729 Single baudrate is supported in current implementation (115200).
732 bool "Support for OMAP specific UART"
734 default y if (ARCH_OMAP2PLUS || ARCH_K3)
737 If you have an TI based SoC and want to use the on-chip serial
738 port, say Y to this option. If unsure say N.
741 bool "Actions Semi OWL UART"
742 depends on DM_SERIAL && ARCH_OWL
744 If you have a Actions Semi OWL based board and want to use the on-chip
745 serial port, say Y to this option. If unsure, say N.
746 Single baudrate is supported in current implementation (115200).
749 bool "PXA serial port support"
751 If you have a machine based on a Marvell XScale PXA2xx CPU you
752 can enable its onboard serial ports by enabling this option.
755 bool "SiFive UART support"
758 This driver supports the SiFive UART. If unsure say N.
760 config STI_ASC_SERIAL
761 bool "STMicroelectronics on-chip UART"
762 depends on DM_SERIAL && ARCH_STI
764 Select this to enable Asynchronous Serial Controller available
765 on STiH410 SoC. This is a basic implementation, it supports
766 following baudrate 9600, 19200, 38400, 57600 and 115200.
769 bool "STMicroelectronics STM32 SoCs on-chip UART"
770 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP)
772 If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC
773 you can enable its onboard serial ports, say Y to this option.
777 bool "Cadence (Xilinx Zynq) UART support"
778 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_ZYNQMP_R5)
780 This driver supports the Cadence UART. It is found e.g. in Xilinx
784 bool "MediaTek High-speed UART support"
787 Select this to enable UART support for MediaTek High-speed UART
788 devices. This driver uses driver model and requires a device
789 tree binding to operate.
790 The High-speed UART is compatible with the ns16550a UART and have
791 its own high-speed registers.
794 bool "Console driver for MPC8XX"
799 prompt "Console port"
800 default 8xx_CONS_SMC1
801 depends on MPC8XX_CONS
803 Depending on board, select one serial port
804 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
814 config SYS_SMC_RXBUFLEN
815 int "Console Rx buffer length"
816 depends on MPC8XX_CONS
819 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
820 the maximum receive buffer length for the SMC.
821 This option is actual only for 8xx possible.
822 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
823 must be defined, to setup the maximum idle timeout for
827 int "maximum idle timeout"
828 depends on MPC8XX_CONS
831 config SYS_BRGCLK_PRESCALE
832 int "BRG Clock Prescale"
833 depends on MPC8XX_CONS
838 depends on MPC8XX_CONS
843 depends on MPC8XX_CONS