SENTRY5 revision 182738
1# 2# $FreeBSD: head/sys/mips/conf/SENTRY5 182738 2008-09-03 18:49:54Z obrien $ 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 50#makeoptions ARCH_FLAGS=-march=mips32 51makeoptions MIPS_LITTLE_ENDIAN=defined 52makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols 53makeoptions MODULES_OVERRIDE="" 54 55options DDB 56options KDB 57 58options SCHED_4BSD #4BSD scheduler 59options INET #InterNETworking 60options NFSCLIENT #Network Filesystem Client 61options NFS_ROOT #NFS usable as /, requires NFSCLIENT 62options PSEUDOFS #Pseudo-filesystem framework 63options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions 64 65# Debugging for use in -current 66options INVARIANTS 67options INVARIANT_SUPPORT 68 69#options BUS_DEBUG 70#makeoptions BUS_DEBUG 71 72device siba # Sonics SiliconBackplane 73device pci # siba_pcib 74 75device bfe # XXX will build both pci and siba 76device miibus # attachments 77 78# pci devices 79# notyet: 80#device ath # in pci slot 81#device ath_hal # in pci slot 82 83device usb # USB Bus (required) 84device uhci # UHCI PCI->USB interface 85device ehci # EHCI PCI->USB interface (USB 2.0) 86 87# need to teach the code to ignore the bridge.... 88 89 90# XXX notyet; need to be auto probed children of siba_cc. 91#device uart 92#device uart_ns8250 93 94device loop 95device ether 96device md 97device mem 98