SENTRY5 revision 202175
1# 2# $FreeBSD: head/sys/mips/conf/SENTRY5 202175 2010-01-12 21:36:08Z imp $ 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 27ident SENTRY5 28cpu CPU_MIPS4KC 29options ISA_MIPS32 30options CPU_SENTRY5 # XXX should this be a 31 # sub-cpu option? 32 33# XXX only siba should be hardwired for now; we will use 34# bus enumeration there 35files "../sentry5/files.sentry5" 36hints "SENTRY5.hints" 37 38# sentry5 normally ships with cfe firmware; use the console for now 39options CFE 40options CFE_CONSOLE 41options ALT_BREAK_TO_DEBUGGER 42 43#makeoptions ARCH_FLAGS=-march=mips32 44makeoptions MIPS_LITTLE_ENDIAN=defined 45makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols 46makeoptions MODULES_OVERRIDE="" 47 48options DDB 49options KDB 50 51options SCHED_4BSD #4BSD scheduler 52options INET #InterNETworking 53options NFSCLIENT #Network Filesystem Client 54options NFS_ROOT #NFS usable as /, requires NFSCLIENT 55options PSEUDOFS #Pseudo-filesystem framework 56options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions 57 58# Debugging for use in -current 59options INVARIANTS 60options INVARIANT_SUPPORT 61 62#options BUS_DEBUG 63#makeoptions BUS_DEBUG 64 65device siba # Sonics SiliconBackplane 66device pci # siba_pcib 67 68# device bfe # XXX will build both pci and siba 69# device miibus # attachments 70 71# pci devices 72# notyet: 73#device ath # in pci slot 74#device ath_hal # pci chip support 75#options AH_SUPPORT_AR5416 # enable AR5416 tx/rx descriptors 76 77device usb # USB Bus (required) 78device uhci # UHCI PCI->USB interface 79device ehci # EHCI PCI->USB interface (USB 2.0) 80 81# need to teach the code to ignore the bridge.... 82 83 84# XXX notyet; need to be auto probed children of siba_cc. 85#device uart 86 87device loop 88device ether 89device md 90