diff --git a/kernel/Makefile b/kernel/Makefile index 552ab2b..77ad53f 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -32,13 +32,14 @@ MAKEFLAGS += -rR CRBASEDIR := $(abspath ..) include $(CRBASEDIR)/armcompile.mk -RES_OBJS = lowlevel.o trace.o memmgr.o vmmap.o pagealloc.o kernel_space.o -INIT_OBJS = start.o kistart.o init_heap.o +RES_OBJS = lowlevel.o trace.o +INIT_OBJS = start.o kistart.o all: kernel.img -kernel.elf: prestart/kernel-prestart.o lib/kernel-lib.o $(RES_OBJS) $(INIT_OBJS) kernel.lds - $(LD) -T kernel.lds prestart/kernel-prestart.o lib/kernel-lib.o $(RES_OBJS) $(INIT_OBJS) -o kernel.elf +kernel.elf: prestart/kernel-prestart.o lib/kernel-lib.o $(RES_OBJS) $(INIT_OBJS) mm/kernel-mm.o kernel.lds + $(LD) -T kernel.lds prestart/kernel-prestart.o lib/kernel-lib.o $(RES_OBJS) $(INIT_OBJS) \ + mm/kernel-mm.o -o kernel.elf prestart/kernel-prestart.o: make -C prestart @@ -46,6 +47,9 @@ prestart/kernel-prestart.o: lib/kernel-lib.o: make -C lib +mm/kernel-mm.o: + make -C mm + kernel.img: kernel.elf $(OBJDUMP) -D kernel.elf > kernel.list $(OBJDUMP) -t kernel.elf > kernel.syms @@ -56,3 +60,4 @@ clean: -rm *.o *.s *.lds kernel.img kernel.elf kernel.list kernel.syms* make -C prestart clean make -C lib clean + make -C mm clean diff --git a/kernel/mm/Makefile b/kernel/mm/Makefile new file mode 100644 index 0000000..29978b6 --- /dev/null +++ b/kernel/mm/Makefile @@ -0,0 +1,44 @@ +# +# This file is part of the COMROGUE Operating System for Raspberry Pi +# +# Copyright (c) 2013, Eric J. Bowersox / Erbosoft Enterprises +# All rights reserved. +# +# This program is free for commercial and non-commercial use as long as the following conditions are +# adhered to. +# +# Copyright in this file remains Eric J. Bowersox and/or Erbosoft, and as such any copyright notices +# in the code are not to be removed. +# +# Redistribution and use in source and binary forms, with or without modification, are permitted +# provided that the following conditions are met: +# +# * Redistributions of source code must retain the above copyright notice, this list of conditions and +# the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and +# the following disclaimer in the documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED +# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR +# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +# "Raspberry Pi" is a trademark of the Raspberry Pi Foundation. +MAKEFLAGS += -rR +CRBASEDIR := $(abspath ../..) +include $(CRBASEDIR)/armcompile.mk + +MM_OBJS = memmgr.o vmmap.o pagealloc.o kernel_space.o +MM_INIT_OBJS = init_heap.o + +all: kernel-mm.o + +kernel-mm.o: $(MM_OBJS) $(MM_INIT_OBJS) kernel-mm.lds + $(LD) -r -T kernel-mm.lds $(MM_OBJS) $(MM_INIT_OBJS) -o kernel-mm.o + +clean: + -rm *.o *.s *.lds diff --git a/kernel/init_heap.c b/kernel/mm/init_heap.c similarity index 100% rename from kernel/init_heap.c rename to kernel/mm/init_heap.c diff --git a/kernel/mm/kernel-mm.ldi b/kernel/mm/kernel-mm.ldi new file mode 100644 index 0000000..4c1c990 --- /dev/null +++ b/kernel/mm/kernel-mm.ldi @@ -0,0 +1,193 @@ +/* + * This file is part of the COMROGUE Operating System for Raspberry Pi + * + * Copyright (c) 2013, Eric J. Bowersox / Erbosoft Enterprises + * All rights reserved. + * + * This program is free for commercial and non-commercial use as long as the following conditions are + * adhered to. + * + * Copyright in this file remains Eric J. Bowersox and/or Erbosoft, and as such any copyright notices + * in the code are not to be removed. + * + * Redistribution and use in source and binary forms, with or without modification, are permitted + * provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this list of conditions and + * the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and + * the following disclaimer in the documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * "Raspberry Pi" is a trademark of the Raspberry Pi Foundation. + */ +/* Copied from default linker script for relocatable linking under ARM & modified */ +OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm") +OUTPUT_ARCH(arm) + +SECTIONS +{ + /* Read-only sections, merged into text segment: */ + .interp 0 : { *(.interp) } + .note.gnu.build-id : { *(.note.gnu.build-id) } + .hash 0 : { *(.hash) } + .gnu.hash 0 : { *(.gnu.hash) } + .dynsym 0 : { *(.dynsym) } + .dynstr 0 : { *(.dynstr) } + .gnu.version 0 : { *(.gnu.version) } + .gnu.version_d 0: { *(.gnu.version_d) } + .gnu.version_r 0: { *(.gnu.version_r) } + .rel.init 0 : { *(.rel.init) } + .rela.init 0 : { *(.rela.init) } + .rel.text 0 : { *(.rel.text) } + .rela.text 0 : { *(.rela.text) } + .rel.fini 0 : { *(.rel.fini) } + .rela.fini 0 : { *(.rela.fini) } + .rel.rodata 0 : { *(.rel.rodata) } + .rela.rodata 0 : { *(.rela.rodata) } + .rel.data.rel.ro 0 : { *(.rel.data.rel.ro) } + .rela.data.rel.ro 0 : { *(.rela.data.rel.ro) } + .rel.data 0 : { *(.rel.data) } + .rela.data 0 : { *(.rela.data) } + .rel.tdata 0 : { *(.rel.tdata) } + .rela.tdata 0 : { *(.rela.tdata) } + .rel.tbss 0 : { *(.rel.tbss) } + .rela.tbss 0 : { *(.rela.tbss) } + .rel.ctors 0 : { *(.rel.ctors) } + .rela.ctors 0 : { *(.rela.ctors) } + .rel.dtors 0 : { *(.rel.dtors) } + .rela.dtors 0 : { *(.rela.dtors) } + .rel.got 0 : { *(.rel.got) } + .rela.got 0 : { *(.rela.got) } + .rel.bss 0 : { *(.rel.bss) } + .rela.bss 0 : { *(.rela.bss) } + .rel.iplt 0 : + { + *(.rel.iplt) + } + .rela.iplt 0 : + { + *(.rela.iplt) + } + .rel.plt 0 : + { + *(.rel.plt) + } + .rela.plt 0 : + { + *(.rela.plt) + } + .init 0 : + { + KEEP (*(.init)) + } =0 + .plt 0 : { *(.plt) } + .iplt 0 : { *(.iplt) } + .text 0 : + { + *(.text .stub) + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + } =0 + .init.text 0 : { *(.init.text) } + .fini 0 : + { + KEEP (*(.fini)) + } =0 + .rodata 0 : { *(.rodata) } + .rodata1 0 : { *(.rodata1) } + .init.rodata 0 : { *(.init.rodata) } + .ARM.extab 0 : { *(.ARM.extab) } + .ARM.exidx 0 : { *(.ARM.exidx) } + .eh_frame_hdr : { *(.eh_frame_hdr) } + .eh_frame 0 : ONLY_IF_RO { KEEP (*(.eh_frame)) } + .gcc_except_table 0 : ONLY_IF_RO { *(.gcc_except_table + .gcc_except_table.*) } + /* These sections are generated by the Sun/Oracle C++ compiler. */ + .exception_ranges 0 : ONLY_IF_RO { *(.exception_ranges + .exception_ranges*) } + /* Adjust the address for the data segment. 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When there is no .bss section, we don't + pad the .data section. */ + } + .init.bss 0 : { *(.init.bss) } + /* 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) } + /* DWARF 3 */ + .debug_pubtypes 0 : { *(.debug_pubtypes) } + .debug_ranges 0 : { *(.debug_ranges) } + .stack 0 : + { + *(.stack) + } + .ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) } + .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) } +} diff --git a/kernel/kernel_space.c b/kernel/mm/kernel_space.c similarity index 100% rename from kernel/kernel_space.c rename to kernel/mm/kernel_space.c diff --git a/kernel/memmgr.c b/kernel/mm/memmgr.c similarity index 100% rename from kernel/memmgr.c rename to kernel/mm/memmgr.c diff --git a/kernel/pagealloc.c b/kernel/mm/pagealloc.c similarity index 100% rename from kernel/pagealloc.c rename to kernel/mm/pagealloc.c diff --git a/kernel/vmmap.c b/kernel/mm/vmmap.c similarity index 100% rename from kernel/vmmap.c rename to kernel/mm/vmmap.c