SENTRY5 revision 183816
1# 2# $FreeBSD: head/sys/mips/conf/SENTRY5 183816 2008-10-13 06:25:28Z bms $ 3# 4# The Broadcom Sentry5 series of processors and boards is very commonly 5# used in COTS hardware including the Netgear WGT634U. 6# 7# Some tweaks are needed for use with this platform: 8# 9# * CFE firmware's ELF loader expects an ELF kernel which is linked so as 10# not to contain offsets in PT_LOAD which point behind the actual offset 11# of that PT header. FreeBSD normally links the first PT_LOAD header to 12# begin at offset 0. 13# 14# * Broadcom's support package for the internal bus, the Sonics 15# SiliconBackplane, needs to be integrated to detect and probe hardware 16# correctly. 17# 18# * The clock needs to be calibrated correctly, so that DELAY() may work. 19# One problem with this is that the low-level printf() routine calls DELAY(), 20# which currently causes divide-by-zero trap 21# 22# * The Broadcom CPUs have no FPU. Attempting to detect one by reading CP1's 23# status register causes an unhandled boot-time exception. An FPU emulator 24# will be necessary to support multi-user boot. 25# 26 27machine mips 28ident SENTRY5 29cpu CPU_MIPS4KC 30options CPU_NOFPU 31options ISA_MIPS32 32options CPU_SENTRY5 # XXX should this be a 33 # sub-cpu option? 34 35# XXX only siba should be hardwired for now; we will use 36# bus enumeration there 37files "../sentry5/files.sentry5" 38hints "SENTRY5.hints" 39 40# sentry5 normally ships with cfe firmware; use the console for now 41options CFE 42options CFE_CONSOLE 43options ALT_BREAK_TO_DEBUGGER 44 45# cfe loader expects kernel at 0x80001000 for mips32 w/o backwards 46# offsets in the linked elf image (see ldscript hack) 47# XXX can we conditionalize the linker stuff on options CFE? 48options KERNVIRTADDR=0x80001000 49 50makeoptions LDSCRIPT_NAME= ldscript.mips.cfe 51 52#makeoptions ARCH_FLAGS=-march=mips32 53makeoptions MIPS_LITTLE_ENDIAN=defined 54makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols 55makeoptions MODULES_OVERRIDE="" 56 57options DDB 58options KDB 59 60options SCHED_4BSD #4BSD scheduler 61options INET #InterNETworking 62options NFSCLIENT #Network Filesystem Client 63options NFS_ROOT #NFS usable as /, requires NFSCLIENT 64options PSEUDOFS #Pseudo-filesystem framework 65options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions 66 67# Debugging for use in -current 68options INVARIANTS 69options INVARIANT_SUPPORT 70 71#options BUS_DEBUG 72#makeoptions BUS_DEBUG 73 74device siba # Sonics SiliconBackplane 75device pci # siba_pcib 76 77device bfe # XXX will build both pci and siba 78device miibus # attachments 79 80# pci devices 81# notyet: 82#device ath # in pci slot 83#device ath_hal # in pci slot 84 85device usb # USB Bus (required) 86device uhci # UHCI PCI->USB interface 87device ehci # EHCI PCI->USB interface (USB 2.0) 88 89# need to teach the code to ignore the bridge.... 90 91 92# XXX notyet; need to be auto probed children of siba_cc. 93#device uart 94#device uart_ns8250 95 96device loop 97device ether 98device md 99device mem 100