This review aims at introducing ubldr (loader with U-Boot interface) for MIPS
(32 and 64-bit, LE and BE). The changes were tested with QEMU's 'mips' target. Most of the implementation was lifted from the ARM version, the appropriate MIPS-specific things were implemented. With these changes I am able to go all the way through the u-boot->ubldr->kernel boot chain in QEMU on all combinations of bit-ness and endian-ness. For the tests I've used FAT32 disk images (as FAT32 is supported by U-boot), which include /boot/kernel/kernel and /boot/kernel/ubldr.bin In U-boot I do: fatload ide 0 <LOAD_ADDR> /boot/kernel/ubldr.bin; go <LOAD_ADDR> where LOAD_ADDR is 80800000 for 32-bit and ffffffff80800000 for 64-bit Then it's the usual ubldr that takes over and loads and starts a kernel. Approved by: adrian (mentor) Sponsored by: Smartcom - Bulgaria AD Differential Revision: https://reviews.freebsd.org/D5313
This commit is contained in:
parent
b981b8bd86
commit
a1b701d82b
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=296183
@ -3,3 +3,5 @@
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.if ${MK_FDT} != "no"
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SUBDIR+= fdt
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.endif
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SUBDIR+= uboot
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@ -1,12 +1,14 @@
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# $FreeBSD$
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SUBDIR= uboot
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#
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# The BERI boot loader port works only on 64-bit MIPS; not a hard port to
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# 32-bit if someone is interested. Build on all 64-bit MIPS platforms to
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# ensure it gets adequate build-test coverage.
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#
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.if ${MACHINE_ARCH} == "mips64"
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SUBDIR= beri
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SUBDIR+= beri
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.endif
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.include <bsd.subdir.mk>
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|
165
sys/boot/mips/uboot/Makefile
Normal file
165
sys/boot/mips/uboot/Makefile
Normal file
@ -0,0 +1,165 @@
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# $FreeBSD$
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.include <src.opts.mk>
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FILES= ubldr
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NEWVERSWHAT= "U-Boot loader" ${MACHINE_ARCH}
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BINDIR?= /boot
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INSTALLFLAGS= -b
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WARNS?= 1
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# Address at which ubldr will be loaded.
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# This varies for different boards and SOCs.
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UBLDR_LOADADDR?= 0xffffffff80800000
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# Architecture-specific loader code
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SRCS= start.S conf.c vers.c
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.if !defined(LOADER_NO_DISK_SUPPORT)
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LOADER_DISK_SUPPORT?= yes
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.else
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LOADER_DISK_SUPPORT= no
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.endif
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LOADER_MSDOS_SUPPORT?= yes
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LOADER_UFS_SUPPORT?= yes
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LOADER_CD9660_SUPPORT?= no
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LOADER_EXT2FS_SUPPORT?= no
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.if ${MK_NAND} != "no"
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LOADER_NANDFS_SUPPORT?= yes
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.else
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LOADER_NANDFS_SUPPORT?= no
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.endif
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LOADER_NET_SUPPORT?= yes
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LOADER_NFS_SUPPORT?= yes
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LOADER_TFTP_SUPPORT?= no
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LOADER_GZIP_SUPPORT?= no
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LOADER_BZIP2_SUPPORT?= no
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.if ${MK_FDT} != "no"
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LOADER_FDT_SUPPORT= yes
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.else
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LOADER_FDT_SUPPORT= no
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.endif
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.if ${LOADER_DISK_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_DISK_SUPPORT
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.endif
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.if ${LOADER_MSDOS_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_MSDOS_SUPPORT
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.endif
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.if ${LOADER_UFS_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_UFS_SUPPORT
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.endif
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.if ${LOADER_CD9660_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_CD9660_SUPPORT
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.endif
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.if ${LOADER_EXT2FS_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_EXT2FS_SUPPORT
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.endif
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.if ${LOADER_NANDFS_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_NANDFS_SUPPORT
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.endif
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.if ${LOADER_GZIP_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_GZIP_SUPPORT
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.endif
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.if ${LOADER_BZIP2_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_BZIP2_SUPPORT
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.endif
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.if ${LOADER_NET_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_NET_SUPPORT
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.endif
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.if ${LOADER_NFS_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_NFS_SUPPORT
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.endif
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.if ${LOADER_TFTP_SUPPORT} == "yes"
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CFLAGS+= -DLOADER_TFTP_SUPPORT
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.endif
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.if ${LOADER_FDT_SUPPORT} == "yes"
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CFLAGS+= -I${.CURDIR}/../../fdt
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CFLAGS+= -I${.OBJDIR}/../../fdt
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CFLAGS+= -DLOADER_FDT_SUPPORT
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LIBUBOOT_FDT= ${.OBJDIR}/../../uboot/fdt/libuboot_fdt.a
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LIBFDT= ${.OBJDIR}/../../fdt/libfdt.a
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.endif
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CFLAGS+= -DNETIF_OPEN_CLOSE_ONCE
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.if ${MK_FORTH} != "no"
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# Enable BootForth
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BOOT_FORTH= yes
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CFLAGS+= -DBOOT_FORTH -I${.CURDIR}/../../ficl
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.if ${MACHINE_ARCH} == "mips64" || ${MACHINE_ARCH} == "mips64el"
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CFLAGS+= -I${.CURDIR}/../../ficl/mips64
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.else
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CFLAGS+= -I${.CURDIR}/../../ficl/mips
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.endif
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LIBFICL= ${.OBJDIR}/../../ficl/libficl.a
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.endif
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# Always add MI sources
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.PATH: ${.CURDIR}/../../common
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.include "${.CURDIR}/../../common/Makefile.inc"
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CFLAGS+= -I${.CURDIR}/../../common
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CFLAGS+= -I.
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CLEANFILES+= vers.c loader.help
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CFLAGS+= -ffreestanding -msoft-float -g
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LDFLAGS= -nostdlib -static -T ${.CURDIR}/ldscript.${MACHINE_CPUARCH}
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# Pull in common loader code
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.PATH: ${.CURDIR}/../../uboot/common
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.include "${.CURDIR}/../../uboot/common/Makefile.inc"
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CFLAGS+= -I${.CURDIR}/../../uboot/common
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# U-Boot standalone support library
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LIBUBOOT= ${.OBJDIR}/../../uboot/lib/libuboot.a
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CFLAGS+= -I${.CURDIR}/../../uboot/lib
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CFLAGS+= -I${.OBJDIR}/../../uboot/lib
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# where to get libstand from
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CFLAGS+= -I${.CURDIR}/../../../../lib/libstand/
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LIBSTAND= ${.OBJDIR}/../../../../lib/libstand/libstand.a
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# clang doesn't understand %D as a specifier to printf
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#NO_WERROR.clang=
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#NO_WERROR=
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DPADD= ${LIBFICL} ${LIBUBOOT} ${LIBFDT} ${LIBUBOOT_FDT} ${LIBSTAND}
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LDADD= ${LIBFICL} ${LIBUBOOT} ${LIBFDT} ${LIBUBOOT_FDT} ${LIBSTAND}
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OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
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vers.c: ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version
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sh ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version ${NEWVERSWHAT}
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loader.help: help.common help.uboot ${.CURDIR}/../../fdt/help.fdt
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cat ${.ALLSRC} | \
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awk -f ${.CURDIR}/../../common/merge_help.awk > ${.TARGET}
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ldscript.abs:
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echo "UBLDR_LOADADDR = ${UBLDR_LOADADDR};" >${.TARGET}
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ldscript.pie:
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echo "UBLDR_LOADADDR = 0;" >${.TARGET}
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ubldr: ${OBJS} ldscript.abs ${.CURDIR}/ldscript.${MACHINE_CPUARCH} ${DPADD}
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${CC} ${CFLAGS} -T ldscript.abs ${LDFLAGS} \
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-o ${.TARGET} ${OBJS} ${LDADD}
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${OBJCOPY} -S -O binary ubldr ubldr.bin
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CLEANFILES+= ldscript.abs ldscript.pie ubldr ubldr.pie ubldr.bin
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.if !defined(LOADER_ONLY)
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.PATH: ${.CURDIR}/../../forth
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.include "${.CURDIR}/../../forth/Makefile.inc"
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# Install loader.rc.
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FILES+= loader.rc
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# Put sample menu.rc on disk but don't enable it by default.
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FILES+= menu.rc
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FILESNAME_menu.rc= menu.rc.sample
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.endif
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.include <bsd.stand.mk>
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.include <bsd.prog.mk>
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115
sys/boot/mips/uboot/conf.c
Normal file
115
sys/boot/mips/uboot/conf.c
Normal file
@ -0,0 +1,115 @@
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/*-
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* Copyright (c) 2008 Semihalf, Rafal Jaworowski
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
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||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include "bootstrap.h"
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#include "libuboot.h"
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#if defined(LOADER_NET_SUPPORT)
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#include "dev_net.h"
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#endif
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struct devsw *devsw[] = {
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#if defined(LOADER_DISK_SUPPORT) || defined(LOADER_CD9660_SUPPORT)
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&uboot_storage,
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#endif
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#if defined(LOADER_NET_SUPPORT)
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&netdev,
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#endif
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NULL
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};
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struct fs_ops *file_system[] = {
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#if defined(LOADER_MSDOS_SUPPORT)
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&dosfs_fsops,
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#endif
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#if defined(LOADER_UFS_SUPPORT)
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&ufs_fsops,
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#endif
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||||
#if defined(LOADER_CD9660_SUPPORT)
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||||
&cd9660_fsops,
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#endif
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||||
#if defined(LOADER_EXT2FS_SUPPORT)
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&ext2fs_fsops,
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#endif
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#if defined(LOADER_NANDFS_SUPPORT)
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&nandfs_fsops,
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#endif
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#if defined(LOADER_NFS_SUPPORT)
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&nfs_fsops,
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#endif
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||||
#if defined(LOADER_TFTP_SUPPORT)
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||||
&tftp_fsops,
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||||
#endif
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||||
#if defined(LOADER_GZIP_SUPPORT)
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||||
&gzipfs_fsops,
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#endif
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||||
#if defined(LOADER_BZIP2_SUPPORT)
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||||
&bzipfs_fsops,
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||||
#endif
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||||
NULL
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||||
};
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||||
|
||||
struct netif_driver *netif_drivers[] = {
|
||||
#if defined(LOADER_NET_SUPPORT)
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||||
&uboot_net,
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||||
#endif
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NULL,
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};
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||||
|
||||
struct file_format *file_formats[] = {
|
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&uboot_elf,
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||||
NULL
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||||
};
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||||
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||||
extern struct console uboot_console;
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||||
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||||
struct console *consoles[] = {
|
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&uboot_console,
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NULL
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||||
};
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||||
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||||
void
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abort(void)
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||||
{
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||||
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||||
printf("error: loader abort\n");
|
||||
while (1);
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||||
}
|
||||
|
||||
void
|
||||
longjmperror(void)
|
||||
{
|
||||
|
||||
printf("error: loader longjmp error\n");
|
||||
while (1);
|
||||
}
|
||||
|
||||
int debug = 1;
|
27
sys/boot/mips/uboot/help.uboot
Normal file
27
sys/boot/mips/uboot/help.uboot
Normal file
@ -0,0 +1,27 @@
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$FreeBSD$
|
||||
|
||||
###############################################################################
|
||||
# Tubenv DShow or import U-Boot environment variables
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||||
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ubenv <import | show> [varname ...]
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|
||||
Display U-Boot environment variables, or import them into the
|
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loader environment (which makes them available in the kernel).
|
||||
|
||||
###############################################################################
|
||||
# Tubenv Simport DImport U-Boot env vars
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||||
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||||
ubenv import [varname ...]
|
||||
|
||||
If no variable names are specified, all U-Boot environment
|
||||
variables are imported. Each variable is prefixed with "uboot."
|
||||
to avoid any possible conflicts with loader or kernel variables.
|
||||
|
||||
###############################################################################
|
||||
# Tubenv Sshow DShow U-Boot env vars
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||||
|
||||
ubenv show [varname ...]
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||||
|
||||
If no variable names are specified, all U-Boot environment
|
||||
variables are shown.
|
||||
|
135
sys/boot/mips/uboot/ldscript.mips
Normal file
135
sys/boot/mips/uboot/ldscript.mips
Normal file
@ -0,0 +1,135 @@
|
||||
/* $FreeBSD$ */
|
||||
|
||||
OUTPUT_ARCH(mips)
|
||||
ENTRY(_start)
|
||||
SECTIONS
|
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{
|
||||
/* Read-only sections, merged into text segment: */
|
||||
/*. = UBLDR_LOADADDR + SIZEOF_HEADERS;*/
|
||||
. = UBLDR_LOADADDR;
|
||||
.text :
|
||||
{
|
||||
start.o(.text*)
|
||||
*(EXCLUDE_FILE (start.o) .text*)
|
||||
/* .gnu.warning sections are handled specially by elf32.em. */
|
||||
*(.gnu.warning)
|
||||
*(.gnu.linkonce.t*)
|
||||
} =0
|
||||
_etext = .;
|
||||
PROVIDE (etext = .);
|
||||
.interp : { *(.interp) }
|
||||
.hash : { *(.hash) }
|
||||
.dynsym : { *(.dynsym) }
|
||||
.dynstr : { *(.dynstr) }
|
||||
.gnu.version : { *(.gnu.version) }
|
||||
.gnu.version_d : { *(.gnu.version_d) }
|
||||
.gnu.version_r : { *(.gnu.version_r) }
|
||||
.rela.text :
|
||||
{ *(.rela.text) *(.rela.gnu.linkonce.t*) }
|
||||
.rela.data :
|
||||
{ *(.rela.data) *(.rela.gnu.linkonce.d*) }
|
||||
.rela.rodata :
|
||||
{ *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
|
||||
.rela.got : { *(.rela.got) }
|
||||
.rela.got1 : { *(.rela.got1) }
|
||||
.rela.got2 : { *(.rela.got2) }
|
||||
.rela.ctors : { *(.rela.ctors) }
|
||||
.rela.dtors : { *(.rela.dtors) }
|
||||
.rela.init : { *(.rela.init) }
|
||||
.rela.fini : { *(.rela.fini) }
|
||||
.rela.bss : { *(.rela.bss) }
|
||||
.rela.plt : { *(.rela.plt) }
|
||||
.rela.sdata : { *(.rela.sdata) }
|
||||
.rela.sbss : { *(.rela.sbss) }
|
||||
.rela.sdata2 : { *(.rela.sdata2) }
|
||||
.rela.sbss2 : { *(.rela.sbss2) }
|
||||
.init : { *(.init) } =0
|
||||
.fini : { *(.fini) } =0
|
||||
.rodata : { *(.rodata) *(.gnu.linkonce.r*) }
|
||||
.rodata1 : { *(.rodata1) }
|
||||
.sdata2 : { *(.sdata2) }
|
||||
.sbss2 : { *(.sbss2) }
|
||||
/* Adjust the address for the data segment to the next page up. */
|
||||
. = ((. + 0x1000) & ~(0x1000 - 1));
|
||||
.data :
|
||||
{
|
||||
*(.data)
|
||||
*(.gnu.linkonce.d*)
|
||||
CONSTRUCTORS
|
||||
}
|
||||
.data1 : { *(.data1) }
|
||||
.got1 : { *(.got1) }
|
||||
.dynamic : { *(.dynamic) }
|
||||
/* Put .ctors and .dtors next to the .got2 section, so that the pointers
|
||||
get relocated with -mrelocatable. Also put in the .fixup pointers.
|
||||
The current compiler no longer needs this, but keep it around for 2.7.2 */
|
||||
PROVIDE (_GOT2_START_ = .);
|
||||
.got2 : { *(.got2) }
|
||||
PROVIDE (__CTOR_LIST__ = .);
|
||||
.ctors : { *(.ctors) }
|
||||
PROVIDE (__CTOR_END__ = .);
|
||||
PROVIDE (__DTOR_LIST__ = .);
|
||||
.dtors : { *(.dtors) }
|
||||
PROVIDE (__DTOR_END__ = .);
|
||||
PROVIDE (_FIXUP_START_ = .);
|
||||
.fixup : { *(.fixup) }
|
||||
PROVIDE (_FIXUP_END_ = .);
|
||||
PROVIDE (_GOT2_END_ = .);
|
||||
PROVIDE (_GOT_START_ = .);
|
||||
.got : { *(.got) }
|
||||
.got.plt : { *(.got.plt) }
|
||||
PROVIDE (_GOT_END_ = .);
|
||||
/* 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. */
|
||||
.sdata : { *(.sdata) }
|
||||
_edata = .;
|
||||
PROVIDE (edata = .);
|
||||
.sbss :
|
||||
{
|
||||
PROVIDE (__sbss_start = .);
|
||||
*(.sbss)
|
||||
*(.scommon)
|
||||
*(.dynsbss)
|
||||
PROVIDE (__sbss_end = .);
|
||||
}
|
||||
.plt : { *(.plt) }
|
||||
.bss :
|
||||
{
|
||||
PROVIDE (__bss_start = .);
|
||||
*(.dynbss)
|
||||
*(.bss)
|
||||
*(COMMON)
|
||||
}
|
||||
_end = . ;
|
||||
PROVIDE (end = .);
|
||||
/* Stabs debugging sections. */
|
||||
.stab 0 : { *(.stab) }
|
||||
.stabstr 0 : { *(.stabstr) }
|
||||
/* 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 . */
|
||||
}
|
13
sys/boot/mips/uboot/loader.conf
Normal file
13
sys/boot/mips/uboot/loader.conf
Normal file
@ -0,0 +1,13 @@
|
||||
# This is defaults/loader.conf for ARM, containing defaults for loader(8).
|
||||
# Do not modify the contents of this file, instead put your customizations
|
||||
# into /boot/loader.conf or /boot/loader.conf.local
|
||||
# $FreeBSD$
|
||||
|
||||
autoboot_delay=10
|
||||
bootfile="kernel" # Kernel name (possibly absolute path)
|
||||
kernel="kernel" # /boot sub-directory containing kernel and modules
|
||||
loader_conf_files="/boot/loader.conf /boot/loader.conf.local"
|
||||
module_path="/boot/kernel;/boot/modules;/boot/dtb"
|
||||
nextboot_conf="/boot/nextboot.conf"
|
||||
nextboot_enable="NO"
|
||||
verbose_loading="NO"
|
71
sys/boot/mips/uboot/start.S
Normal file
71
sys/boot/mips/uboot/start.S
Normal file
@ -0,0 +1,71 @@
|
||||
/*-
|
||||
* Copyright (c) 2016 Stanislav Galabov
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. 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 AUTHOR 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 AUTHOR 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <machine/asm.h>
|
||||
|
||||
.text
|
||||
.extern _C_LABEL(main)
|
||||
.weak _DYNAMIC
|
||||
|
||||
/*
|
||||
* Entry point to the loader that U-Boot passes control to.
|
||||
*/
|
||||
ENTRY(_start)
|
||||
PTR_S sp, uboot_address
|
||||
j main
|
||||
nop
|
||||
END(_start)
|
||||
|
||||
/*
|
||||
* syscall()
|
||||
*/
|
||||
ENTRY(syscall)
|
||||
PTR_S ra, ret_address
|
||||
PTR_L t9, syscall_ptr
|
||||
jalr t9
|
||||
nop
|
||||
PTR_L ra, ret_address
|
||||
jr ra
|
||||
nop
|
||||
END(syscall)
|
||||
|
||||
/*
|
||||
* Data section
|
||||
*/
|
||||
.data
|
||||
.align 8
|
||||
.globl syscall_ptr
|
||||
syscall_ptr:
|
||||
.dword 0
|
||||
|
||||
.globl uboot_address
|
||||
uboot_address:
|
||||
.dword 0
|
||||
|
||||
ret_address:
|
||||
.dword 0
|
9
sys/boot/mips/uboot/version
Normal file
9
sys/boot/mips/uboot/version
Normal file
@ -0,0 +1,9 @@
|
||||
$FreeBSD$
|
||||
|
||||
NOTE ANY CHANGES YOU MAKE TO THE BOOTBLOCKS HERE. The format of this
|
||||
file is important. Make sure the current version number is on line 6.
|
||||
|
||||
1.2: Extended with NAND FS support.
|
||||
1.1: Flattened Device Tree blob support.
|
||||
1.0: Added storage support. Booting from HDD, USB, etc. is now possible.
|
||||
0.5: Initial U-Boot/arm version (netbooting only).
|
Loading…
Reference in New Issue
Block a user