diff options
author | marcel <marcel@FreeBSD.org> | 2008-02-16 22:40:55 +0000 |
---|---|---|
committer | marcel <marcel@FreeBSD.org> | 2008-02-16 22:40:55 +0000 |
commit | c4eb493643b42b9a4b1326997841f7debb145fac (patch) | |
tree | e4c9f202a03c47f1a0258216cac9bbe39c1379bc /sys/boot/powerpc | |
parent | 192282ff7a28f13eb4a1f722ced0248e4423de14 (diff) | |
download | FreeBSD-src-c4eb493643b42b9a4b1326997841f7debb145fac.zip FreeBSD-src-c4eb493643b42b9a4b1326997841f7debb145fac.tar.gz |
MFp4 (e500):
Add support for U-Boot. This uses the U-Boot API as developed by
Rafal and which is (will be) part of U-Boot 1.3.2 and later.
Credits to: raj@
Diffstat (limited to 'sys/boot/powerpc')
-rw-r--r-- | sys/boot/powerpc/uboot/Makefile | 99 | ||||
-rw-r--r-- | sys/boot/powerpc/uboot/conf.c | 109 | ||||
-rw-r--r-- | sys/boot/powerpc/uboot/help.uboot | 1 | ||||
-rw-r--r-- | sys/boot/powerpc/uboot/ldscript.powerpc | 137 | ||||
-rw-r--r-- | sys/boot/powerpc/uboot/metadata.c | 369 | ||||
-rw-r--r-- | sys/boot/powerpc/uboot/start.S | 93 | ||||
-rw-r--r-- | sys/boot/powerpc/uboot/version | 9 |
7 files changed, 817 insertions, 0 deletions
diff --git a/sys/boot/powerpc/uboot/Makefile b/sys/boot/powerpc/uboot/Makefile new file mode 100644 index 0000000..09b8f5d --- /dev/null +++ b/sys/boot/powerpc/uboot/Makefile @@ -0,0 +1,99 @@ +# $FreeBSD$ + +PROG= loader +NEWVERSWHAT= "U-Boot loader" ${MACHINE_ARCH} +BINDIR?= /boot +INSTALLFLAGS= -b + +# Architecture-specific loader code +SRCS= start.S conf.c metadata.c vers.c + +LOADER_DISK_SUPPORT?= no +LOADER_UFS_SUPPORT?= no +LOADER_CD9660_SUPPORT?= no +LOADER_EXT2FS_SUPPORT?= no +LOADER_NET_SUPPORT?= yes +LOADER_NFS_SUPPORT?= yes +LOADER_TFTP_SUPPORT?= no +LOADER_GZIP_SUPPORT?= no +LOADER_BZIP2_SUPPORT?= no + +.if ${LOADER_DISK_SUPPORT} == "yes" +CFLAGS+= -DLOADER_DISK_SUPPORT +.endif +.if ${LOADER_UFS_SUPPORT} == "yes" +CFLAGS+= -DLOADER_UFS_SUPPORT +.endif +.if ${LOADER_CD9660_SUPPORT} == "yes" +CFLAGS+= -DLOADER_CD9660_SUPPORT +.endif +.if ${LOADER_EXT2FS_SUPPORT} == "yes" +CFLAGS+= -DLOADER_EXT2FS_SUPPORT +.endif +.if ${LOADER_GZIP_SUPPORT} == "yes" +CFLAGS+= -DLOADER_GZIP_SUPPORT +.endif +.if ${LOADER_BZIP2_SUPPORT} == "yes" +CFLAGS+= -DLOADER_BZIP2_SUPPORT +.endif +.if ${LOADER_NET_SUPPORT} == "yes" +CFLAGS+= -DLOADER_NET_SUPPORT +.endif +.if ${LOADER_NFS_SUPPORT} == "yes" +CFLAGS+= -DLOADER_NFS_SUPPORT +.endif +.if ${LOADER_TFTP_SUPPORT} == "yes" +CFLAGS+= -DLOADER_TFTP_SUPPORT +.endif + +.if !defined(NO_FORTH) +# Enable BootForth +BOOT_FORTH= yes +CFLAGS+= -DBOOT_FORTH -I${.CURDIR}/../../ficl -I${.CURDIR}/../../ficl/powerpc +LIBFICL= ${.OBJDIR}/../../ficl/libficl.a +.endif + +# Always add MI sources +.PATH: ${.CURDIR}/../../common +.include "${.CURDIR}/../../common/Makefile.inc" +CFLAGS+= -I${.CURDIR}/../../common +CFLAGS+= -I. + +CLEANFILES+= vers.c loader.help + +CFLAGS+= -ffreestanding + +LDFLAGS= -nostdlib -static -T ${.CURDIR}/ldscript.powerpc + +# Pull in common loader code +.PATH: ${.CURDIR}/../../uboot/common +.include "${.CURDIR}/../../uboot/common/Makefile.inc" +CFLAGS+= -I${.CURDIR}/../../uboot/common + +# U-Boot standalone support library +LIBUBOOT= ${.OBJDIR}/../../uboot/lib/libuboot.a +CFLAGS+= -I${.CURDIR}/../../uboot/lib +CFLAGS+= -I${.OBJDIR}/../../uboot/lib + +# where to get libstand from +CFLAGS+= -I${.CURDIR}/../../../../lib/libstand/ + +DPADD= ${LIBFICL} ${LIBUBOOT} ${LIBSTAND} +LDADD= ${LIBFICL} ${LIBUBOOT} -lstand + +vers.c: ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version + sh ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version ${NEWVERSWHAT} + +loader.help: help.common help.uboot + cat ${.ALLSRC} | \ + awk -f ${.CURDIR}/../../common/merge_help.awk > ${.TARGET} + +.PATH: ${.CURDIR}/../../forth +FILES= loader.help loader.4th support.4th loader.conf +FILESDIR_loader.conf= /boot/defaults + +.if !exists(${DESTDIR}/boot/loader.rc) +FILES+= loader.rc +.endif + +.include <bsd.prog.mk> diff --git a/sys/boot/powerpc/uboot/conf.c b/sys/boot/powerpc/uboot/conf.c new file mode 100644 index 0000000..6021ec8 --- /dev/null +++ b/sys/boot/powerpc/uboot/conf.c @@ -0,0 +1,109 @@ +/*- + * Copyright (c) 1999 Michael Smith <msmith@freebsd.org> + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stand.h> +#include "bootstrap.h" +#include "libuboot.h" + +#if defined(LOADER_NET_SUPPORT) +#include "dev_net.h" +#endif + +/* + * We could use linker sets for some or all of these, but + * then we would have to control what ended up linked into + * the bootstrap. So it's easier to conditionalise things + * here. + * + * XXX rename these arrays to be consistent and less namespace-hostile + */ + +/* Exported for libstand */ +struct devsw *devsw[] = { +#if defined(LOADER_DISK_SUPPORT) || defined(LOADER_CD9660_SUPPORT) + &uboot_disk, +#endif +#if defined(LOADER_NET_SUPPORT) + &netdev, +#endif + NULL +}; + +struct fs_ops *file_system[] = { +#if defined(LOADER_UFS_SUPPORT) + &ufs_fsops, +#endif +#if defined(LOADER_CD9660_SUPPORT) + &cd9660_fsops, +#endif +#if defined(LOADER_EXT2FS_SUPPORT) + &ext2fs_fsops, +#endif +#if defined(LOADER_NET_SUPPORT) + &nfs_fsops, +#endif +#if defined(LOADER_TFTP_SUPPORT) + &tftp_fsops, +#endif +#if defined(LOADER_GZIP_SUPPORT) + &gzipfs_fsops, +#endif +#if defined(LOADER_BZIP2_SUPPORT) + &bzipfs_fsops, +#endif + NULL +}; + +struct netif_driver *netif_drivers[] = { +#if defined(LOADER_NET_SUPPORT) + &uboot_net, +#endif + NULL, +}; + +/* Exported for PowerPC only */ +/* + * Sort formats so that those that can detect based on arguments + * rather than reading the file go first. + */ + +struct file_format *file_formats[] = { + &uboot_elf, + NULL +}; + +/* + * Consoles + */ +extern struct console uboot_console; + +struct console *consoles[] = { + &uboot_console, + NULL +}; diff --git a/sys/boot/powerpc/uboot/help.uboot b/sys/boot/powerpc/uboot/help.uboot new file mode 100644 index 0000000..5873eb0 --- /dev/null +++ b/sys/boot/powerpc/uboot/help.uboot @@ -0,0 +1 @@ +$FreeBSD$ diff --git a/sys/boot/powerpc/uboot/ldscript.powerpc b/sys/boot/powerpc/uboot/ldscript.powerpc new file mode 100644 index 0000000..43ef422 --- /dev/null +++ b/sys/boot/powerpc/uboot/ldscript.powerpc @@ -0,0 +1,137 @@ +/* $FreeBSD$ */ + +OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc") +OUTPUT_ARCH(powerpc) +ENTRY(_start) +SEARCH_DIR(/usr/lib); +PROVIDE (__stack = 0); +SECTIONS +{ + /* Read-only sections, merged into text segment: */ + . = 0x00010000 + SIZEOF_HEADERS; + .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) } + .text : + { + *(.text) + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.gnu.linkonce.t*) + } =0 + _etext = .; + PROVIDE (etext = .); + .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 . */ +} + diff --git a/sys/boot/powerpc/uboot/metadata.c b/sys/boot/powerpc/uboot/metadata.c new file mode 100644 index 0000000..ba87991 --- /dev/null +++ b/sys/boot/powerpc/uboot/metadata.c @@ -0,0 +1,369 @@ +/*- + * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> + * Copyright (C) 2007 Semihalf, Piotr Kruszynski <ppk@semihalf.com> + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stand.h> +#include <sys/param.h> +#include <sys/reboot.h> +#include <sys/linker.h> + +#include <machine/elf.h> +#include <machine/metadata.h> +#include <machine/bootinfo.h> + +#include "api_public.h" +#include "bootstrap.h" + +/* XXX should this go into header? */ +struct sys_info *ub_get_sys_info(void); + +/* + * Return a 'boothowto' value corresponding to the kernel arguments in + * (kargs) and any relevant environment variables. + */ +static struct +{ + const char *ev; + int mask; +} howto_names[] = { + {"boot_askname", RB_ASKNAME}, + {"boot_cdrom", RB_CDROM}, + {"boot_ddb", RB_KDB}, + {"boot_dfltroot", RB_DFLTROOT}, + {"boot_gdb", RB_GDB}, + {"boot_multicons", RB_MULTIPLE}, + {"boot_mute", RB_MUTE}, + {"boot_pause", RB_PAUSE}, + {"boot_serial", RB_SERIAL}, + {"boot_single", RB_SINGLE}, + {"boot_verbose", RB_VERBOSE}, + {NULL, 0} +}; + +int +md_getboothowto(char *kargs) +{ + char *cp; + int howto; + int active; + int i; + + /* Parse kargs */ + howto = 0; + if (kargs != NULL) { + cp = kargs; + active = 0; + while (*cp != 0) { + if (!active && (*cp == '-')) { + active = 1; + } else if (active) + switch (*cp) { + case 'a': + howto |= RB_ASKNAME; + break; + case 'C': + howto |= RB_CDROM; + break; + case 'd': + howto |= RB_KDB; + break; + case 'D': + howto |= RB_MULTIPLE; + break; + case 'm': + howto |= RB_MUTE; + break; + case 'g': + howto |= RB_GDB; + break; + case 'h': + howto |= RB_SERIAL; + break; + case 'p': + howto |= RB_PAUSE; + break; + case 'r': + howto |= RB_DFLTROOT; + break; + case 's': + howto |= RB_SINGLE; + break; + case 'v': + howto |= RB_VERBOSE; + break; + default: + active = 0; + break; + } + cp++; + } + } + /* get equivalents from the environment */ + for (i = 0; howto_names[i].ev != NULL; i++) + if (getenv(howto_names[i].ev) != NULL) + howto |= howto_names[i].mask; + if (!strcmp(getenv("console"), "comconsole")) + howto |= RB_SERIAL; + if (!strcmp(getenv("console"), "nullconsole")) + howto |= RB_MUTE; + return(howto); +} + +/* + * Copy the environment into the load area starting at (addr). + * Each variable is formatted as <name>=<value>, with a single nul + * separating each variable, and a double nul terminating the environment. + */ +vm_offset_t +md_copyenv(vm_offset_t addr) +{ + struct env_var *ep; + + /* traverse the environment */ + for (ep = environ; ep != NULL; ep = ep->ev_next) { + archsw.arch_copyin(ep->ev_name, addr, strlen(ep->ev_name)); + addr += strlen(ep->ev_name); + archsw.arch_copyin("=", addr, 1); + addr++; + if (ep->ev_value != NULL) { + archsw.arch_copyin(ep->ev_value, addr, strlen(ep->ev_value)); + addr += strlen(ep->ev_value); + } + archsw.arch_copyin("", addr, 1); + addr++; + } + archsw.arch_copyin("", addr, 1); + addr++; + return(addr); +} + +/* + * Copy module-related data into the load area, where it can be + * used as a directory for loaded modules. + * + * Module data is presented in a self-describing format. Each datum + * is preceded by a 32-bit identifier and a 32-bit size field. + * + * Currently, the following data are saved: + * + * MOD_NAME (variable) module name (string) + * MOD_TYPE (variable) module type (string) + * MOD_ARGS (variable) module parameters (string) + * MOD_ADDR sizeof(vm_offset_t) module load address + * MOD_SIZE sizeof(size_t) module size + * MOD_METADATA (variable) type-specific metadata + */ +#define COPY32(v, a, c) { \ + u_int32_t x = (v); \ + if (c) \ + archsw.arch_copyin(&x, a, sizeof(x)); \ + a += sizeof(x); \ +} + +#define MOD_STR(t, a, s, c) { \ + COPY32(t, a, c); \ + COPY32(strlen(s) + 1, a, c) \ + if (c) \ + archsw.arch_copyin(s, a, strlen(s) + 1);\ + a += roundup(strlen(s) + 1, sizeof(u_long));\ +} + +#define MOD_NAME(a, s, c) MOD_STR(MODINFO_NAME, a, s, c) +#define MOD_TYPE(a, s, c) MOD_STR(MODINFO_TYPE, a, s, c) +#define MOD_ARGS(a, s, c) MOD_STR(MODINFO_ARGS, a, s, c) + +#define MOD_VAR(t, a, s, c) { \ + COPY32(t, a, c); \ + COPY32(sizeof(s), a, c); \ + if (c) \ + archsw.arch_copyin(&s, a, sizeof(s)); \ + a += roundup(sizeof(s), sizeof(u_long)); \ +} + +#define MOD_ADDR(a, s, c) MOD_VAR(MODINFO_ADDR, a, s, c) +#define MOD_SIZE(a, s, c) MOD_VAR(MODINFO_SIZE, a, s, c) + +#define MOD_METADATA(a, mm, c) { \ + COPY32(MODINFO_METADATA | mm->md_type, a, c);\ + COPY32(mm->md_size, a, c); \ + if (c) \ + archsw.arch_copyin(mm->md_data, a, mm->md_size);\ + a += roundup(mm->md_size, sizeof(u_long)); \ +} + +#define MOD_END(a, c) { \ + COPY32(MODINFO_END, a, c); \ + COPY32(0, a, c); \ +} + +vm_offset_t +md_copymodules(vm_offset_t addr) +{ + struct preloaded_file *fp; + struct file_metadata *md; + int c; + + c = addr != 0; + /* start with the first module on the list, should be the kernel */ + for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) { + + MOD_NAME(addr, fp->f_name, c); /* this field must come first */ + MOD_TYPE(addr, fp->f_type, c); + if (fp->f_args) + MOD_ARGS(addr, fp->f_args, c); + MOD_ADDR(addr, fp->f_addr, c); + MOD_SIZE(addr, fp->f_size, c); + for (md = fp->f_metadata; md != NULL; md = md->md_next) { + if (!(md->md_type & MODINFOMD_NOCOPY)) { + MOD_METADATA(addr, md, c); + } + } + } + MOD_END(addr, c); + return(addr); +} + +/* + * Load the information expected by a powerpc kernel. + * + * - The 'boothowto' argument is constructed + * - The 'bootdev' argument is constructed + * - The kernel environment is copied into kernel space. + * - Module metadata are formatted and placed in kernel space. + */ +int +md_load(char *args, vm_offset_t *modulep) +{ + struct bootinfo bootinfo; + struct preloaded_file *kfp; + struct preloaded_file *xp; + struct file_metadata *md; + vm_offset_t kernend; + vm_offset_t addr; + vm_offset_t envp; + vm_offset_t size; + vm_offset_t vaddr; + struct sys_info *si; + char *rootdevname; + int howto; + int i; + + /* This metadata addreses must be converted for kernel after relocation */ + uint32_t mdt[] = { MODINFOMD_SSYM, MODINFOMD_ESYM, + MODINFOMD_KERNEND, MODINFOMD_ENVP }; + + howto = md_getboothowto(args); + + /* + * Allow the environment variable 'rootdev' to override the supplied device + * This should perhaps go to MI code and/or have $rootdev tested/set by + * MI code before launching the kernel. + */ + rootdevname = getenv("rootdev"); + if (rootdevname == NULL) + rootdevname = getenv("currdev"); + /* Try reading the /etc/fstab file to select the root device */ + getrootmount(rootdevname); + + /* find the last module in the chain */ + addr = 0; + for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) { + if (addr < (xp->f_addr + xp->f_size)) + addr = xp->f_addr + xp->f_size; + } + /* pad to a page boundary */ + addr = roundup(addr, PAGE_SIZE); + + /* copy our environment */ + envp = addr; + addr = md_copyenv(addr); + + /* pad to a page boundary */ + addr = roundup(addr, PAGE_SIZE); + + /* Fill information structure */ + if (!(si = ub_get_sys_info())) + panic("can't retrieve U-Boot sysinfo"); + + /* Extract mem info */ + for (i = 0; i < si->mr_no; i++) + if (si->mr[i].flags == MR_ATTR_DRAM) { + bootinfo.mem_base = si->mr[i].start; + bootinfo.mem_size = si->mr[i].size; + break; + } + + if (i == si->mr_no) + panic("can't retrieve memory info"); + + bootinfo.version = 1; + bootinfo.bar_base = si->bar; + bootinfo.cpu_clk = si->clk_cpu; + bootinfo.bus_clk = si->clk_bus; + +#if 0 + memcpy(bootinfo.eth0_addr, bd->bi_enetaddr, sizeof(bootinfo.eth0_addr)); +#ifdef CONFIG_HAS_ETH1 + memcpy(bootinfo.eth1_addr, bd->bi_enet1addr, sizeof(bootinfo.eth1_addr)); +#endif +#endif + + kernend = 0; + kfp = file_findfile(NULL, "elf32 kernel"); + if (kfp == NULL) + kfp = file_findfile(NULL, "elf kernel"); + if (kfp == NULL) + panic("can't find kernel file"); + file_addmetadata(kfp, MODINFOMD_HOWTO, sizeof howto, &howto); + file_addmetadata(kfp, MODINFOMD_BOOTINFO, sizeof bootinfo, &bootinfo); + file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp); + file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend); + + *modulep = addr; + size = md_copymodules(0); + kernend = roundup(addr + size, PAGE_SIZE); + + md = file_findmetadata(kfp, MODINFOMD_KERNEND); + bcopy(&kernend, md->md_data, sizeof kernend); + + /* Convert addresses to the final VA */ + *modulep -= __elfN(relocation_offset); + + for (i = 0; i < sizeof mdt / sizeof mdt[0]; i++) { + md = file_findmetadata(kfp, mdt[i]); + if (md) { + bcopy(md->md_data, &vaddr, sizeof vaddr); + vaddr -= __elfN(relocation_offset); + bcopy(&vaddr, md->md_data, sizeof vaddr); + } + } + (void)md_copymodules(addr); + + return(0); +} diff --git a/sys/boot/powerpc/uboot/start.S b/sys/boot/powerpc/uboot/start.S new file mode 100644 index 0000000..b2d09ab --- /dev/null +++ b/sys/boot/powerpc/uboot/start.S @@ -0,0 +1,93 @@ +/*- + * Copyright (c) 2007 Semihalf, Rafal Jaworowski <raj@semihalf.com> + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <machine/asm.h> + +#define STACK_SIZE 8192 + +/* + * Entry point to the loader that U-Boot passes control to. + */ + .text + .globl _start +_start: + /* Fix up a stack */ + lis %r1, stack@ha + addi %r1, %r1, stack@l + addi %r1, %r1, (STACK_SIZE - 32) + /* Save U-Boot's r14 and r29 */ + lis %r11, saved_regs@ha + addi %r11, %r11, saved_regs@l + stw %r14, 0(%r11) + stw %r29, 4(%r11) + b main + +/* + * syscall() + */ +ENTRY(syscall) + stwu %r1, -16(%r1) + mflr %r0 + stw %r14, 8(%r1) + stw %r29, 12(%r1) + stw %r0, 20(%r1) + /* Restore U-Boot's r14 and r29 */ + lis %r11, saved_regs@ha + addi %r11, %r11, saved_regs@l + lwz %r14, 0(%r11) + lwz %r29, 4(%r11) + /* Call into u-Boot */ + lis %r11, syscall_ptr@ha + addi %r11, %r11, syscall_ptr@l + lwz %r11, 0(%r11) + mtctr %r11 + bctrl + /* Epilogue */ + lwz %r11, 0(%r1) + lwz %r0, 4(%r11) + mtlr %r0 + lwz %r14, 8(%r1) + lwz %r29, 12(%r1) + mr %r1, %r11 + blr + +/* + * Data section + */ + .data + .align 4 +stack: + .space STACK_SIZE + +GLOBAL(syscall_ptr) + .long 0 +GLOBAL(saved_regs) + .long 0 /* R14 */ + .long 0 /* R29 */ + diff --git a/sys/boot/powerpc/uboot/version b/sys/boot/powerpc/uboot/version new file mode 100644 index 0000000..58b040d --- /dev/null +++ b/sys/boot/powerpc/uboot/version @@ -0,0 +1,9 @@ +$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. + +0.6: Integrated with the new U-Boot API +0.5: Full network functionality. +0.2: Initial U-Boot/PowerPC version derived from the existing + OpenFirmware-based. |