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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a7918f39bb
Patch from Alessandro Zummo This patch adds support for the LinkSys NSLU2 running with both big and little-endian kernels. The LinkSys NSLU2 is a cost engineered ARM, XScale 420 based system similar to the the Intel IXDP425 evaluation board. It uses the IXP4XX ARCH. While this patch applies independently of other patches the resultant kernel requires further patches to successfully use onboard devices, including the onboard flash. Since these patches are independent of this one they will be submitted separately. A defconfig is not included here because not all of the required drivers are actually in the kernel. We intend to provide one as soon as the patches will be incorporated in mainstream. This patch is the combined work of nslu2-linux.org Signed-off-by: John Bowler <jbowler@acm.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
138 lines
4.3 KiB
Plaintext
138 lines
4.3 KiB
Plaintext
if ARCH_IXP4XX
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config ARCH_SUPPORTS_BIG_ENDIAN
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bool
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default y
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menu "Intel IXP4xx Implementation Options"
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comment "IXP4xx Platforms"
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# This entry is placed on top because otherwise it would have
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# been shown as a submenu.
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config MACH_NSLU2
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bool
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prompt "NSLU2" if !(MACH_IXDP465 || MACH_IXDPG425 || ARCH_IXDP425 || ARCH_ADI_COYOTE || ARCH_AVILA || ARCH_IXCDP1100 || ARCH_PRPMC1100 || MACH_GTWX5715)
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help
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Say 'Y' here if you want your kernel to support Linksys's
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NSLU2 NAS device. For more information on this platform,
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see http://www.nslu2-linux.org
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config ARCH_AVILA
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bool "Avila"
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help
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Say 'Y' here if you want your kernel to support the Gateworks
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Avila Network Platform. For more information on this platform,
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see <file:Documentation/arm/IXP4xx>.
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config ARCH_ADI_COYOTE
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bool "Coyote"
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help
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Say 'Y' here if you want your kernel to support the ADI
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Engineering Coyote Gateway Reference Platform. For more
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information on this platform, see <file:Documentation/arm/IXP4xx>.
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config ARCH_IXDP425
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bool "IXDP425"
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help
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Say 'Y' here if you want your kernel to support Intel's
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IXDP425 Development Platform (Also known as Richfield).
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For more information on this platform, see <file:Documentation/arm/IXP4xx>.
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config MACH_IXDPG425
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bool "IXDPG425"
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help
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Say 'Y' here if you want your kernel to support Intel's
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IXDPG425 Development Platform (Also known as Montajade).
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For more information on this platform, see <file:Documentation/arm/IXP4xx>.
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config MACH_IXDP465
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bool "IXDP465"
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help
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Say 'Y' here if you want your kernel to support Intel's
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IXDP465 Development Platform (Also known as BMP).
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For more information on this platform, see <file:Documentation/arm/IXP4xx>.
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#
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# IXCDP1100 is the exact same HW as IXDP425, but with a different machine
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# number from the bootloader due to marketing monkeys, so we just enable it
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# by default if IXDP425 is enabled.
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#
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config ARCH_IXCDP1100
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bool
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depends on ARCH_IXDP425
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default y
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config ARCH_PRPMC1100
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bool "PrPMC1100"
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help
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Say 'Y' here if you want your kernel to support the Motorola
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PrPCM1100 Processor Mezanine Module. For more information on
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this platform, see <file:Documentation/arm/IXP4xx>.
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#
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# Avila and IXDP share the same source for now. Will change in future
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#
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config ARCH_IXDP4XX
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bool
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depends on ARCH_IXDP425 || ARCH_AVILA || MACH_IXDP465
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default y
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#
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# Certain registers and IRQs are only enabled if supporting IXP465 CPUs
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#
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config CPU_IXP46X
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bool
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depends on MACH_IXDP465
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default y
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config MACH_GTWX5715
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bool "Gemtek WX5715 (Linksys WRV54G)"
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depends on ARCH_IXP4XX
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help
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This board is currently inside the Linksys WRV54G Gateways.
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IXP425 - 266mhz
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32mb SDRAM
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8mb Flash
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miniPCI slot 0 does not have a card connector soldered to the board
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miniPCI slot 1 has an ISL3880 802.11g card (Prism54)
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npe0 is connected to a Kendin KS8995M Switch (4 ports)
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npe1 is the "wan" port
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"Console" UART is available on J11 as console
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"High Speed" UART is n/c (as far as I can tell)
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20 Pin ARM/Xscale JTAG interface on J2
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comment "IXP4xx Options"
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config IXP4XX_INDIRECT_PCI
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bool "Use indirect PCI memory access"
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help
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IXP4xx provides two methods of accessing PCI memory space:
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1) A direct mapped window from 0x48000000 to 0x4bffffff (64MB).
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To access PCI via this space, we simply ioremap() the BAR
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into the kernel and we can use the standard read[bwl]/write[bwl]
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macros. This is the preferred method due to speed but it
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limits the system to just 64MB of PCI memory. This can be
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problamatic if using video cards and other memory-heavy devices.
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2) If > 64MB of memory space is required, the IXP4xx can be
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configured to use indirect registers to access PCI This allows
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for up to 128MB (0x48000000 to 0x4fffffff) of memory on the bus.
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The disadvantadge of this is that every PCI access requires
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three local register accesses plus a spinlock, but in some
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cases the performance hit is acceptable. In addition, you cannot
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mmap() PCI devices in this case due to the indirect nature
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of the PCI window.
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By default, the direct method is used. Choose this option if you
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need to use the indirect method instead. If you don't know
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what you need, leave this option unselected.
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endmenu
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endif
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