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* ARM: rework endianess selectionArnd Bergmann2022-04-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Choosing big-endian vs little-endian kernels in Kconfig has not worked correctly since the introduction of CONFIG_ARCH_MULTIPLATFORM a long time ago. The problems is that CONFIG_BIG_ENDIAN depends on ARCH_SUPPORTS_BIG_ENDIAN, which can set by any one platform in the config, but would actually have to be supported by all of them. This was mostly ok for ARMv6/ARMv7 builds, since these are BE8 and tend to just work aside from problems in nonportable device drivers. For ARMv4/v5 machines, CONFIG_BIG_ENDIAN and CONFIG_ARCH_MULTIPLATFORM were never set together, so this was disabled on all those machines except for IXP4xx. As IXP4xx can now become part of ARCH_MULTIPLATFORM, it seems better to formalize this logic: all ARMv4/v5 platforms get an explicit dependency on being either big-endian (ixp4xx) or little-endian (the rest). We may want to fix ixp4xx in the future to support both, but it does not work in LE mode at the moment. For the ARMv6/v7 platforms, there are two ways this could be handled a) allow both modes only for platforms selecting 'ARCH_SUPPORTS_BIG_ENDIAN' today, but only LE mode for the others, given that these were added intentionally at some point. b) allow both modes everwhere, given that it was already possible to build that way by e.g. selecting ARCH_VIRT, and that the list is not an accurate reflection of which platforms may or may not work. Out of these, I picked b) because it seemed slighly more logical to me. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* ARM: lpc32xx: allow multiplatform buildArnd Bergmann2019-08-151-0/+11
| | | | | | | | | All preparation work is done, so the platform can finally be moved into ARCH_MULTIPLATFORM. This requires a small change to the defconfig file to enable the platform. Link: https://lore.kernel.org/r/20190809144043.476786-14-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* ARM: LPC32xx: DT conversion of Standard UARTsRoland Stigge2012-06-141-32/+0
| | | | | | | | | | | | This patch switches from static serial driver initialization to devicetree configuration. This way, the Standard UARTs of the LPC32xx SoC can be enabled individually via DT. E.g., instead of Kconfig configuration, the phy3250.dts activates UARTs 3 and 5. Signed-off-by: Roland Stigge <stigge@antcom.de> Tested-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
* ARM: LPC32xx: Remove obsolete platform KconfigRoland Stigge2012-04-221-26/+0
| | | | | | | This patch removes two Kconfig options now unused (the network driver is configured via DT now). Signed-off-by: Roland Stigge <stigge@antcom.de>
* ARM: LPC32xx: Ethernet supportRoland Stigge2012-03-131-0/+25
| | | | | | | | This patch adds ethernet support to the LPC32xx ARM architecture. The actual driver in drivers/net is contained in a separate patch. Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Arnd Bergmann <arnd@arndb.de>
* ARM: LPC32XX: Arch config menu supoport and makefilesKevin Wells2010-07-271-0/+33
Signed-off-by: Kevin Wells <wellsk40@gmail.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>