SENTRY5 revision 185522
1# 2# $FreeBSD: head/sys/mips/conf/SENTRY5 185522 2008-12-01 16:53:01Z sam $ 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 CPU_NOFPU 30options ISA_MIPS32 31options CPU_SENTRY5 # XXX should this be a 32 # sub-cpu option? 33 34# XXX only siba should be hardwired for now; we will use 35# bus enumeration there 36files "../sentry5/files.sentry5" 37hints "SENTRY5.hints" 38 39# sentry5 normally ships with cfe firmware; use the console for now 40options CFE 41options CFE_CONSOLE 42options ALT_BREAK_TO_DEBUGGER 43 44# cfe loader expects kernel at 0x80001000 for mips32 w/o backwards 45# offsets in the linked elf image (see ldscript hack) 46# XXX can we conditionalize the linker stuff on options CFE? 47options KERNVIRTADDR=0x80001000 48 49makeoptions LDSCRIPT_NAME= ldscript.mips.cfe 50 51#makeoptions ARCH_FLAGS=-march=mips32 52makeoptions MIPS_LITTLE_ENDIAN=defined 53makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols 54makeoptions MODULES_OVERRIDE="" 55 56options DDB 57options KDB 58 59options SCHED_4BSD #4BSD scheduler 60options INET #InterNETworking 61options NFSCLIENT #Network Filesystem Client 62options NFS_ROOT #NFS usable as /, requires NFSCLIENT 63options PSEUDOFS #Pseudo-filesystem framework 64options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions 65 66# Debugging for use in -current 67options INVARIANTS 68options INVARIANT_SUPPORT 69 70#options BUS_DEBUG 71#makeoptions BUS_DEBUG 72 73device siba # Sonics SiliconBackplane 74device pci # siba_pcib 75 76device bfe # XXX will build both pci and siba 77device miibus # attachments 78 79# pci devices 80# notyet: 81#device ath # in pci slot 82#device ath_hal # pci chip support 83#options AH_SUPPORT_AR5416 # enable AR5416 tx/rx descriptors 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 95device loop 96device ether 97device md 98