kernel-ark/arch/arm/mach-at91/Kconfig
Guennadi Liakhovetski fa3218d859 [ARM] 4660/3: at91: allow selecting UART for early kernel messages
Currently early kernel messages, i.e., those from uncompression, go to the
debugging UART. And if it is enabled in the platform configuration, but
not initialized by the bootloader, the machine hangs, waiting for UART
status change. Besides, having those messages on another UART - typically
the console UART - may be preferrable. This patch allows selecting the
UART in kernel configuration.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:16:39 +00:00

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if ARCH_AT91
menu "Atmel AT91 System-on-Chip"
choice
prompt "Atmel AT91 Processor"
config ARCH_AT91RM9200
bool "AT91RM9200"
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
config ARCH_AT91SAM9260
bool "AT91SAM9260 or AT91SAM9XE"
config ARCH_AT91SAM9261
bool "AT91SAM9261"
config ARCH_AT91SAM9263
bool "AT91SAM9263"
config ARCH_AT91SAM9RL
bool "AT91SAM9RL"
config ARCH_AT91CAP9
bool "AT91CAP9"
config ARCH_AT91X40
bool "AT91x40"
endchoice
config AT91_PMC_UNIT
bool
default !ARCH_AT91X40
# ----------------------------------------------------------
if ARCH_AT91RM9200
comment "AT91RM9200 Board Type"
config MACH_ONEARM
bool "Ajeco 1ARM Single Board Computer"
depends on ARCH_AT91RM9200
help
Select this if you are using Ajeco's 1ARM Single Board Computer.
<http://www.ajeco.fi/products.htm>
config ARCH_AT91RM9200DK
bool "Atmel AT91RM9200-DK Development board"
depends on ARCH_AT91RM9200
help
Select this if you are using Atmel's AT91RM9200-DK Development board.
(Discontinued)
config MACH_AT91RM9200EK
bool "Atmel AT91RM9200-EK Evaluation Kit"
depends on ARCH_AT91RM9200
help
Select this if you are using Atmel's AT91RM9200-EK Evaluation Kit.
<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507>
config MACH_CSB337
bool "Cogent CSB337"
depends on ARCH_AT91RM9200
help
Select this if you are using Cogent's CSB337 board.
<http://www.cogcomp.com/csb_csb337.htm>
config MACH_CSB637
bool "Cogent CSB637"
depends on ARCH_AT91RM9200
help
Select this if you are using Cogent's CSB637 board.
<http://www.cogcomp.com/csb_csb637.htm>
config MACH_CARMEVA
bool "Conitec ARM&EVA"
depends on ARCH_AT91RM9200
help
Select this if you are using Conitec's AT91RM9200-MCU-Module.
<http://www.conitec.net/english/linuxboard.htm>
config MACH_ATEB9200
bool "Embest ATEB9200"
depends on ARCH_AT91RM9200
help
Select this if you are using Embest's ATEB9200 board.
<http://www.embedinfo.com/english/product/ATEB9200.asp>
config MACH_KB9200
bool "KwikByte KB920x"
depends on ARCH_AT91RM9200
help
Select this if you are using KwikByte's KB920x board.
<http://kwikbyte.com/KB9202_description_new.htm>
config MACH_PICOTUX2XX
bool "picotux 200"
depends on ARCH_AT91RM9200
help
Select this if you are using a picotux 200.
<http://www.picotux.com/>
config MACH_KAFA
bool "Sperry-Sun KAFA board"
depends on ARCH_AT91RM9200
help
Select this if you are using Sperry-Sun's KAFA board.
endif
# ----------------------------------------------------------
if ARCH_AT91SAM9260
comment "AT91SAM9260 Variants"
config ARCH_AT91SAM9260_SAM9XE
bool "AT91SAM9XE"
depends on ARCH_AT91SAM9260
help
Select this if you are using Atmel's AT91SAM9XE System-on-Chip.
They are basically AT91SAM9260s with various sizes of embedded Flash.
comment "AT91SAM9260 / AT91SAM9XE Board Type"
config MACH_AT91SAM9260EK
bool "Atmel AT91SAM9260-EK / AT91SAM9XE Evaluation Kit"
depends on ARCH_AT91SAM9260
help
Select this if you are using Atmel's AT91SAM9260-EK or AT91SAM9XE Evaluation Kit
<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3933>
endif
# ----------------------------------------------------------
if ARCH_AT91SAM9261
comment "AT91SAM9261 Board Type"
config MACH_AT91SAM9261EK
bool "Atmel AT91SAM9261-EK Evaluation Kit"
depends on ARCH_AT91SAM9261
help
Select this if you are using Atmel's AT91SAM9261-EK Evaluation Kit.
<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3820>
endif
# ----------------------------------------------------------
if ARCH_AT91SAM9263
comment "AT91SAM9263 Board Type"
config MACH_AT91SAM9263EK
bool "Atmel AT91SAM9263-EK Evaluation Kit"
depends on ARCH_AT91SAM9263
help
Select this if you are using Atmel's AT91SAM9263-EK Evaluation Kit.
<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4057>
endif
# ----------------------------------------------------------
if ARCH_AT91SAM9RL
comment "AT91SAM9RL Board Type"
config MACH_AT91SAM9RLEK
bool "Atmel AT91SAM9RL-EK Evaluation Kit"
depends on ARCH_AT91SAM9RL
help
Select this if you are using Atmel's AT91SAM9RL-EK Evaluation Kit.
endif
# ----------------------------------------------------------
if ARCH_AT91CAP9
comment "AT91CAP9 Board Type"
config MACH_AT91CAP9ADK
bool "Atmel AT91CAP9A-DK Evaluation Kit"
depends on ARCH_AT91CAP9
help
Select this if you are using Atmel's AT91CAP9A-DK Evaluation Kit.
<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4138>
endif
# ----------------------------------------------------------
if ARCH_AT91X40
comment "AT91X40 Board Type"
config MACH_AT91EB01
bool "Atmel AT91EB01 Evaluation Kit"
help
Select this if you are using Atmel's AT91EB01 Evaluation Kit.
It is also a popular target for simulators such as GDB's
ARM simulator (commonly known as the ARMulator) and the
Skyeye simulator.
endif
# ----------------------------------------------------------
comment "AT91 Board Options"
config MTD_AT91_DATAFLASH_CARD
bool "Enable DataFlash Card support"
depends on (ARCH_AT91RM9200DK || MACH_AT91RM9200EK || MACH_AT91SAM9260EK || MACH_AT91SAM9261EK || MACH_AT91SAM9263EK || MACH_AT91CAP9ADK)
help
Enable support for the DataFlash card.
config MTD_NAND_AT91_BUSWIDTH_16
bool "Enable 16-bit data bus interface to NAND flash"
depends on (MACH_AT91SAM9260EK || MACH_AT91SAM9261EK || MACH_AT91SAM9263EK || MACH_AT91CAP9ADK)
help
On AT91SAM926x boards both types of NAND flash can be present
(8 and 16 bit data bus width).
# ----------------------------------------------------------
comment "AT91 Feature Selections"
config AT91_PROGRAMMABLE_CLOCKS
bool "Programmable Clocks"
help
Select this if you need to program one or more of the PCK0..PCK3
programmable clock outputs.
config AT91_TIMER_HZ
int "Kernel HZ (jiffies per second)"
range 32 1024
depends on ARCH_AT91
default "128" if ARCH_AT91RM9200
default "100"
help
On AT91rm9200 chips where you're using a system clock derived
from the 32768 Hz hardware clock, this tick rate should divide
it exactly: use a power-of-two value, such as 128 or 256, to
reduce timing errors caused by rounding.
On AT91sam926x chips, or otherwise when using a higher precision
system clock (of at least several MHz), rounding is less of a
problem so it can be safer to use a decimal values like 100.
choice
prompt "Select a UART for early kernel messages"
config AT91_EARLY_DBGU
bool "DBGU"
config AT91_EARLY_USART0
bool "USART0"
config AT91_EARLY_USART1
bool "USART1"
config AT91_EARLY_USART2
bool "USART2"
depends on ! ARCH_AT91X40
config AT91_EARLY_USART3
bool "USART3"
depends on (ARCH_AT91RM9200 || ARCH_AT91SAM9RL || ARCH_AT91SAM9260)
config AT91_EARLY_USART4
bool "USART4"
depends on ARCH_AT91SAM9260
config AT91_EARLY_USART5
bool "USART5"
depends on ARCH_AT91SAM9260
endchoice
endmenu
endif