Index: head/sys/conf/Makefile.riscv =================================================================== --- head/sys/conf/Makefile.riscv (revision 357479) +++ head/sys/conf/Makefile.riscv (revision 357480) @@ -1,57 +1,66 @@ # Makefile.riscv -- with config changes. # Copyright 1990 W. Jolitz # from: @(#)Makefile.i386 7.1 5/10/91 # from FreeBSD: src/sys/conf/Makefile.i386,v 1.255 2002/02/20 23:35:49 # $FreeBSD$ # # Makefile for FreeBSD # # RISCVTODO: copy pasted from aarch64, needs to be # constructed from a machine description: # config machineid # Most changes should be made in the machine description # /sys/riscv/conf/``machineid'' # after which you should do # config machineid # Generic makefile changes should be made in # /sys/conf/Makefile.riscv # after which config should be rerun for all machines. # # Which version of config(8) is required. %VERSREQ= 600012 .if !defined(S) S= ../../.. .endif .include "$S/conf/kern.pre.mk" INCLUDES+= -I$S/contrib/libfdt +# Set the ELF LMA to the address that OpenSBI's fw_jump jumps to. This allows +# us to load the kernel with the -kernel flag in QEMU without having to embed +# it inside BBL or OpenSBI's fw_payload first. +# Note: For rv32 the start address is different (0x80400000). +# We set this value using --defsym rather than hardcoding it in ldscript.riscv +# so that different kernel configs can override the load address. +KERNEL_LMA?= 0x80200000 + SYSTEM_LD= @${LD} -N -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ --no-warn-mismatch --warn-common --export-dynamic \ + --defsym='kernel_lma=${KERNEL_LMA}' \ --dynamic-linker /red/herring \ -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o .if !empty(DDB_ENABLED) CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls .endif # hack because genassym.c includes sys/bus.h which includes these. genassym.o: bus_if.h device_if.h %BEFORE_DEPEND %OBJS %FILES.c %FILES.s %FILES.m %CLEAN %RULES .include "$S/conf/kern.post.mk" Index: head/sys/conf/ldscript.riscv =================================================================== --- head/sys/conf/ldscript.riscv (revision 357479) +++ head/sys/conf/ldscript.riscv (revision 357480) @@ -1,148 +1,149 @@ /* $FreeBSD$ */ OUTPUT_ARCH(riscv) ENTRY(_start) SEARCH_DIR(/usr/lib); SECTIONS { /* Read-only sections, merged into text segment: */ . = kernbase; - .text : AT(ADDR(.text) - kernbase) + /* The load address kernel_lma is set using --defsym= on the command line. */ + .text : AT(kernel_lma) { *(.text) *(.stub) /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) *(.gnu.linkonce.t*) } =0x9090 _etext = .; PROVIDE (etext = .); .fini : { *(.fini) } =0x9090 .rodata : { *(.rodata) *(.gnu.linkonce.r*) } .rodata1 : { *(.rodata1) } .interp : { *(.interp) } .hash : { *(.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } .gnu.version_d : { *(.gnu.version_d) } .gnu.version_r : { *(.gnu.version_r) } .note.gnu.build-id : { PROVIDE (__build_id_start = .); *(.note.gnu.build-id) PROVIDE (__build_id_end = .); } .rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) } .rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) } .rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) } .rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) } .rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) } .rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } .rel.got : { *(.rel.got) } .rela.got : { *(.rela.got) } .rel.ctors : { *(.rel.ctors) } .rela.ctors : { *(.rela.ctors) } .rel.dtors : { *(.rel.dtors) } .rela.dtors : { *(.rela.dtors) } .rel.init : { *(.rel.init) } .rela.init : { *(.rela.init) } .rel.fini : { *(.rel.fini) } .rela.fini : { *(.rela.fini) } .rel.bss : { *(.rel.bss) } .rela.bss : { *(.rela.bss) } .rel.plt : { *(.rel.plt) } .rela.plt : { *(.rela.plt) } .init : { *(.init) } =0x9090 .plt : { *(.plt) } /* Adjust the address for the data segment. We want to adjust up to the same address within the page on the next page up. */ . = ALIGN(0x1000) + (. & (0x1000 - 1)) ; .data : { *(.data) *(.gnu.linkonce.d*) } .data1 : { *(.data1) } . = ALIGN(32 / 8); _start_ctors = .; PROVIDE (start_ctors = .); .ctors : { *(.ctors) } _stop_ctors = .; PROVIDE (stop_ctors = .); .dtors : { *(.dtors) } .got : { *(.got.plt) *(.got) } .dynamic : { *(.dynamic) } /* We want the small data sections together, so single-instruction offsets can access them all, and initialized data all before uninitialized, so we can shorten the on-disk segment size. */ . = ALIGN(8); .sdata : { __global_pointer$ = . + 0x800; *(.sdata) } _edata = .; PROVIDE (edata = .); /* Ensure __bss_start is associated with the next section in case orphan sections are placed directly after .sdata, as has been seen to happen with LLD. */ . = ALIGN(8); __bss_start = .; .sbss : { *(.sbss) *(.scommon) } .bss : { *(.dynbss) *(.bss) *(COMMON) } . = ALIGN(8); _end = . ; PROVIDE (end = .); /* Stabs debugging sections. */ .stab 0 : { *(.stab) } .stabstr 0 : { *(.stabstr) } .stab.excl 0 : { *(.stab.excl) } .stab.exclstr 0 : { *(.stab.exclstr) } .stab.index 0 : { *(.stab.index) } .stab.indexstr 0 : { *(.stab.indexstr) } .comment 0 : { *(.comment) } /* DWARF debug sections. Symbols in the DWARF debugging sections are relative to the beginning of the section so we begin them at 0. */ /* DWARF 1 */ .debug 0 : { *(.debug) } .line 0 : { *(.line) } /* GNU DWARF 1 extensions */ .debug_srcinfo 0 : { *(.debug_srcinfo) } .debug_sfnames 0 : { *(.debug_sfnames) } /* DWARF 1.1 and DWARF 2 */ .debug_aranges 0 : { *(.debug_aranges) } .debug_pubnames 0 : { *(.debug_pubnames) } /* DWARF 2 */ .debug_info 0 : { *(.debug_info) } .debug_abbrev 0 : { *(.debug_abbrev) } .debug_line 0 : { *(.debug_line) } .debug_frame 0 : { *(.debug_frame) } .debug_str 0 : { *(.debug_str) } .debug_loc 0 : { *(.debug_loc) } .debug_macinfo 0 : { *(.debug_macinfo) } /* SGI/MIPS DWARF 2 extensions */ .debug_weaknames 0 : { *(.debug_weaknames) } .debug_funcnames 0 : { *(.debug_funcnames) } .debug_typenames 0 : { *(.debug_typenames) } .debug_varnames 0 : { *(.debug_varnames) } /* These must appear regardless of . */ }