1# SPDX-License-Identifier: GPL-2.0-only 2if ARCH_IXP4XX 3 4menu "Intel IXP4xx Implementation Options" 5 6comment "IXP4xx Platforms" 7 8config MACH_IXP4XX_OF 9 bool 10 prompt "Device Tree IXP4xx boards" 11 default y 12 select ARM_APPENDED_DTB # Old Redboot bootloaders deployed 13 select I2C 14 select I2C_IOP3XX 15 select PCI 16 select USE_OF 17 help 18 Say 'Y' here to support Device Tree-based IXP4xx platforms. 19 20config MACH_GATEWAY7001 21 bool "Gateway 7001" 22 depends on IXP4XX_PCI_LEGACY 23 help 24 Say 'Y' here if you want your kernel to support Gateway's 25 7001 Access Point. For more information on this platform, 26 see http://openwrt.org 27 28config MACH_GORAMO_MLR 29 bool "GORAMO Multi Link Router" 30 help 31 Say 'Y' here if you want your kernel to support GORAMO 32 MultiLink router. 33 34config ARCH_PRPMC1100 35 bool "PrPMC1100" 36 help 37 Say 'Y' here if you want your kernel to support the Motorola 38 PrPCM1100 Processor Mezanine Module. For more information on 39 this platform, see <file:Documentation/arm/ixp4xx.rst>. 40 41config MACH_FSG 42 bool 43 prompt "Freecom FSG-3" 44 depends on IXP4XX_PCI_LEGACY 45 help 46 Say 'Y' here if you want your kernel to support Freecom's 47 FSG-3 device. For more information on this platform, 48 see http://www.nslu2-linux.org/wiki/FSG3/HomePage 49 50# 51# Certain registers and IRQs are only enabled if supporting IXP465 CPUs 52# 53config CPU_IXP46X 54 bool 55 depends on MACH_IXDP465 56 default y 57 58config CPU_IXP43X 59 bool 60 depends on MACH_KIXRP435 61 default y 62 63config MACH_GTWX5715 64 bool "Gemtek WX5715 (Linksys WRV54G)" 65 depends on ARCH_IXP4XX 66 depends on IXP4XX_PCI_LEGACY 67 help 68 This board is currently inside the Linksys WRV54G Gateways. 69 70 IXP425 - 266mhz 71 32mb SDRAM 72 8mb Flash 73 miniPCI slot 0 does not have a card connector soldered to the board 74 miniPCI slot 1 has an ISL3880 802.11g card (Prism54) 75 npe0 is connected to a Kendin KS8995M Switch (4 ports) 76 npe1 is the "wan" port 77 "Console" UART is available on J11 as console 78 "High Speed" UART is n/c (as far as I can tell) 79 20 Pin ARM/Xscale JTAG interface on J2 80 81comment "IXP4xx Options" 82 83config IXP4XX_PCI_LEGACY 84 bool "IXP4xx legacy PCI driver support" 85 depends on PCI 86 help 87 Selects legacy PCI driver. 88 Not recommended for new development. 89 90config IXP4XX_INDIRECT_PCI 91 bool "Use indirect PCI memory access" 92 depends on IXP4XX_PCI_LEGACY 93 help 94 IXP4xx provides two methods of accessing PCI memory space: 95 96 1) A direct mapped window from 0x48000000 to 0x4BFFFFFF (64MB). 97 To access PCI via this space, we simply ioremap() the BAR 98 into the kernel and we can use the standard read[bwl]/write[bwl] 99 macros. This is the preferred method due to speed but it 100 limits the system to just 64MB of PCI memory. This can be 101 problematic if using video cards and other memory-heavy devices. 102 103 2) If > 64MB of memory space is required, the IXP4xx can be 104 configured to use indirect registers to access the whole PCI 105 memory space. This currently allows for up to 1 GB (0x10000000 106 to 0x4FFFFFFF) of memory on the bus. The disadvantage of this 107 is that every PCI access requires three local register accesses 108 plus a spinlock, but in some cases the performance hit is 109 acceptable. In addition, you cannot mmap() PCI devices in this 110 case due to the indirect nature of the PCI window. 111 112 By default, the direct method is used. Choose this option if you 113 need to use the indirect method instead. If you don't know 114 what you need, leave this option unselected. 115 116endmenu 117 118endif 119