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EFI boot loader for FreeBSD/i386.

Browse Source 
Doesn't boot a kernel yet, but it can read an ELF file from the EFI FAT
partition.
This commit is contained in:
Rui Paulo 2010-04-07 18:16:05 +00:00
parent 3bcad5b785
commit 8df7a05edd
15 changed files with 1663 additions and 0 deletions
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69
sys/boot/i386/efi/Makefile Normal file
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# $FreeBSD$
NO_MAN=
WITHOUT_SSP=
BUILDING_EFI=
.include <bsd.own.mk>
PROG= loader.sym
INTERNALPROG=
# architecture-specific loader code
SRCS= main.c exec.c conf.c vers.c reloc.c start.S elf32_freebsd.c
SRCS+= i386_copy.c bootinfo.c autoload.c devicename.c efimd.c
CFLAGS+= -I${.CURDIR}/../../efi/include
CFLAGS+= -I${.CURDIR}/../../efi/include/i386
.if ${MK_FORTH} != "no"
BOOT_FORTH= yes
CFLAGS+= -DBOOT_FORTH
CFLAGS+= -I${.CURDIR}/../../ficl
CFLAGS+= -I${.CURDIR}/../../ficl/i386
LIBFICL= ${.OBJDIR}/../../ficl/libficl.a
.endif
# Include bcache code.
HAVE_BCACHE= yes
# Always add MI sources
.PATH: ${.CURDIR}/../../common
.include "${.CURDIR}/../../common/Makefile.inc"
CFLAGS+= -I${.CURDIR}/../../common
FILES= loader.efi
FILESMODE_loader.efi= ${BINMODE}
LDSCRIPT= ${.CURDIR}/ldscript.${MACHINE_ARCH}
LDFLAGS= -Wl,-T${LDSCRIPT} -shared -symbolic
${PROG}: ${LDSCRIPT}
CLEANFILES= vers.c loader.efi
NEWVERSWHAT= "EFI loader" ${MACHINE_ARCH}
vers.c: ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version
sh ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version ${NEWVERSWHAT}
OBJCOPY?= objcopy
OBJDUMP?= objdump
loader.efi: loader.sym
if [ `${OBJDUMP} -t ${.ALLSRC} | fgrep '*UND*' | wc -l` != 0 ]; then \
${OBJDUMP} -t ${.ALLSRC} | fgrep '*UND*'; \
exit 1; \
fi
${OBJCOPY} -j .data -j .dynamic -j .dynstr -j .dynsym -j .hash \
-j .rel.dyn -j .reloc -j .sdata -j .text -j set_Xcommand_set \
--target=efi-app-ia32 ${.ALLSRC} ${.TARGET}
LIBEFI= ${.OBJDIR}/../../efi/libefi/libefi.a
CFLAGS+= -I${.CURDIR}/../libi386
CFLAGS+= -I${.CURDIR}/../btx/lib
DPADD= ${LIBFICL} ${LIBEFI} ${LIBSTAND}
LDADD= ${LIBFICL} ${LIBEFI} -lstand
.include <bsd.prog.mk>

9
sys/boot/i386/efi/autoload.c Normal file
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#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
int
i386_autoload(void)
{
return (0);
}

297
sys/boot/i386/efi/bootinfo.c Normal file
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/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* Copyright (c) 2006 Marcel Moolenaar
* 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 <string.h>
#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/linker.h>
#include <efi.h>
#include <efilib.h>
#include "bootstrap.h"
#include "libi386.h"
#include <machine/bootinfo.h>
/*
* 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}
};
static const char howto_switches[] = "aCdrgDmphsv";
static int howto_masks[] = {
RB_ASKNAME, RB_CDROM, RB_KDB, RB_DFLTROOT, RB_GDB, RB_MULTIPLE,
RB_MUTE, RB_PAUSE, RB_SERIAL, RB_SINGLE, RB_VERBOSE
};
int
bi_getboothowto(char *kargs)
{
const char *sw;
char *opts;
int howto, i;
howto = 0;
/* Get the boot options from the environment first. */
for (i = 0; howto_names[i].ev != NULL; i++) {
if (getenv(howto_names[i].ev) != NULL)
howto |= howto_names[i].mask;
}
/* Parse kargs */
if (kargs == NULL)
return (howto);
opts = strchr(kargs, '-');
while (opts != NULL) {
while (*(++opts) != '\0') {
sw = strchr(howto_switches, *opts);
if (sw == NULL)
break;
howto |= howto_masks[sw - howto_switches];
}
opts = strchr(opts, '-');
}
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
bi_copyenv(vm_offset_t start)
{
struct env_var *ep;
vm_offset_t addr, last;
size_t len;
addr = last = start;
/* Traverse the environment. */
for (ep = environ; ep != NULL; ep = ep->ev_next) {
len = strlen(ep->ev_name);
if (i386_copyin(ep->ev_name, addr, len) != len)
break;
addr += len;
if (i386_copyin("=", addr, 1) != 1)
break;
addr++;
if (ep->ev_value != NULL) {
len = strlen(ep->ev_value);
if (i386_copyin(ep->ev_value, addr, len) != len)
break;
addr += len;
}
if (i386_copyin("", addr, 1) != 1)
break;
last = ++addr;
}
if (i386_copyin("", last++, 1) != 1)
last = start;
return(last);
}
/*
* 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) { \
u_int32_t x = (v); \
i386_copyin(&x, a, sizeof(x)); \
a += sizeof(x); \
}
#define MOD_STR(t, a, s) { \
COPY32(t, a); \
COPY32(strlen(s) + 1, a); \
i386_copyin(s, a, strlen(s) + 1); \
a += roundup(strlen(s) + 1, sizeof(u_int64_t));\
}
#define MOD_NAME(a, s) MOD_STR(MODINFO_NAME, a, s)
#define MOD_TYPE(a, s) MOD_STR(MODINFO_TYPE, a, s)
#define MOD_ARGS(a, s) MOD_STR(MODINFO_ARGS, a, s)
#define MOD_VAR(t, a, s) { \
COPY32(t, a); \
COPY32(sizeof(s), a); \
i386_copyin(&s, a, sizeof(s)); \
a += roundup(sizeof(s), sizeof(u_int64_t)); \
}
#define MOD_ADDR(a, s) MOD_VAR(MODINFO_ADDR, a, s)
#define MOD_SIZE(a, s) MOD_VAR(MODINFO_SIZE, a, s)
#define MOD_METADATA(a, mm) { \
COPY32(MODINFO_METADATA | mm->md_type, a); \
COPY32(mm->md_size, a); \
i386_copyin(mm->md_data, a, mm->md_size); \
a += roundup(mm->md_size, sizeof(u_int64_t));\
}
#define MOD_END(a) { \
COPY32(MODINFO_END, a); \
COPY32(0, a); \
}
vm_offset_t
bi_copymodules(vm_offset_t addr)
{
struct preloaded_file *fp;
struct file_metadata *md;
/* Start with the first module on the list, should be the kernel. */
for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
/* The name field must come first. */
MOD_NAME(addr, fp->f_name);
MOD_TYPE(addr, fp->f_type);
if (fp->f_args)
MOD_ARGS(addr, fp->f_args);
MOD_ADDR(addr, fp->f_addr);
MOD_SIZE(addr, fp->f_size);
for (md = fp->f_metadata; md != NULL; md = md->md_next) {
if (!(md->md_type & MODINFOMD_NOCOPY))
MOD_METADATA(addr, md);
}
}
MOD_END(addr);
return(addr);
}
/*
* Load the information expected by the kernel.
*
* - The kernel environment is copied into kernel space.
* - Module metadata are formatted and placed in kernel space.
*/
int
bi_load(struct preloaded_file *fp, uint64_t *bi_addr)
{
struct bootinfo bi;
struct preloaded_file *xp;
struct file_metadata *md;
struct devdesc *rootdev;
char *rootdevname;
vm_offset_t addr, ssym, esym;
bzero(&bi, sizeof(struct bootinfo));
bi.bi_version = 1;
// bi.bi_boothowto = bi_getboothowto(fp->f_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");
i386_getdev((void**)&rootdev, rootdevname, NULL);
if (rootdev != NULL) {
/* Try reading /etc/fstab to select the root device. */
getrootmount(i386_fmtdev(rootdev));
free(rootdev);
}
md = file_findmetadata(fp, MODINFOMD_SSYM);
ssym = (md != NULL) ? *((vm_offset_t *)&(md->md_data)) : 0;
md = file_findmetadata(fp, MODINFOMD_ESYM);
esym = (md != NULL) ? *((vm_offset_t *)&(md->md_data)) : 0;
if (ssym != 0 && esym != 0) {
bi.bi_symtab = ssym;
bi.bi_esymtab = esym;
}
/* 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;
}
addr = (addr + 15) & ~15;
/* Copy module list and metadata. */
bi.bi_modulep = addr;
addr = bi_copymodules(addr);
if (addr <= bi.bi_modulep) {
addr = bi.bi_modulep;
bi.bi_modulep = 0;
}
addr = (addr + 15) & ~15;
/* Copy our environment. */
bi.bi_envp = addr;
addr = bi_copyenv(addr);
if (addr <= bi.bi_envp) {
addr = bi.bi_envp;
bi.bi_envp = 0;
}
addr = (addr + PAGE_MASK) & ~PAGE_MASK;
bi.bi_kernend = addr;
return (ldr_bootinfo(&bi, bi_addr));
}

77
sys/boot/i386/efi/conf.c Normal file
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/*-
* Copyright (c) 2006 Marcel Moolenaar
* 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 ``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 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 <efi.h>
#include <efilib.h>
struct devsw *devsw[] = {
&efipart_dev,
&efinet_dev,
NULL
};
struct fs_ops *file_system[] = {
&dosfs_fsops,
&ufs_fsops,
&cd9660_fsops,
&nfs_fsops,
&gzipfs_fsops,
NULL
};
struct netif_driver *netif_drivers[] = {
&efinetif,
NULL
};
#ifdef notyet
extern struct file_format amd64_elf;
extern struct file_format amd64_elf_obj;
#endif
extern struct file_format i386_elf;
extern struct file_format i386_elf_obj;
struct file_format *file_formats[] = {
#ifdef notyet
&amd64_elf,
&amd64_elf_obj,
#endif
&i386_elf,
&i386_elf_obj,
NULL
};
extern struct console efi_console;
struct console *consoles[] = {
&efi_console,
NULL
};

169
sys/boot/i386/efi/devicename.c Normal file
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/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* Copyright (c) 2006 Marcel Moolenaar
* 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 <string.h>
#include <sys/disklabel.h>
#include "bootstrap.h"
#include <efi.h>
#include <efilib.h>
static int i386_parsedev(struct devdesc **, const char *, const char **);
/*
* Point (dev) at an allocated device specifier for the device matching the
* path in (devspec). If it contains an explicit device specification,
* use that. If not, use the default device.
*/
int
i386_getdev(void **vdev, const char *devspec, const char **path)
{
struct devdesc **dev = (struct devdesc **)vdev;
int rv;
/*
* If it looks like this is just a path and no device, then
* use the current device instead.
*/
if (devspec == NULL || *devspec == '/' || !strchr(devspec, ':')) {
rv = i386_parsedev(dev, getenv("currdev"), NULL);
if (rv == 0 && path != NULL)
*path = devspec;
return (rv);
}
/* Parse the device name off the beginning of the devspec. */
return (i386_parsedev(dev, devspec, path));
}
/*
* Point (dev) at an allocated device specifier matching the string version
* at the beginning of (devspec). Return a pointer to the remaining
* text in (path).
*
* In all cases, the beginning of (devspec) is compared to the names
* of known devices in the device switch, and then any following text
* is parsed according to the rules applied to the device type.
*
* For disk-type devices, the syntax is:
*
* fs<unit>:
*/
static int
i386_parsedev(struct devdesc **dev, const char *devspec, const char **path)
{
struct devdesc *idev;
struct devsw *dv;
char *cp;
const char *np;
int i, err;
/* minimum length check */
if (strlen(devspec) < 2)
return (EINVAL);
/* look for a device that matches */
for (i = 0; devsw[i] != NULL; i++) {
dv = devsw[i];
if (!strncmp(devspec, dv->dv_name, strlen(dv->dv_name)))
break;
}
if (devsw[i] == NULL)
return (ENOENT);
idev = malloc(sizeof(struct devdesc));
if (idev == NULL)
return (ENOMEM);
idev->d_dev = dv;
idev->d_type = dv->dv_type;
idev->d_unit = -1;
err = 0;
np = devspec + strlen(dv->dv_name);
if (*np != '\0' && *np != ':') {
idev->d_unit = strtol(np, &cp, 0);
if (cp == np) {
idev->d_unit = -1;
free(idev);
return (EUNIT);
}
}
if (*cp != '\0' && *cp != ':') {
free(idev);
return (EINVAL);
}
if (path != NULL)
*path = (*cp == 0) ? cp : cp + 1;
if (dev != NULL)
*dev = idev;
else
free(idev);
return (0);
}
char *
i386_fmtdev(void *vdev)
{
struct devdesc *dev = (struct devdesc *)vdev;
static char buf[32]; /* XXX device length constant? */
switch(dev->d_type) {
case DEVT_NONE:
strcpy(buf, "(no device)");
break;
default:
sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit);
break;
}
return(buf);
}
/*
* Set currdev to suit the value being supplied in (value)
*/
int
i386_setcurrdev(struct env_var *ev, int flags, const void *value)
{
struct devdesc *ncurr;
int rv;
rv = i386_parsedev(&ncurr, value, NULL);
if (rv != 0)
return(rv);
free(ncurr);
env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
return (0);
}

139
sys/boot/i386/efi/efimd.c Normal file
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/*-
* Copyright (c) 2004, 2006 Marcel Moolenaar
* 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 ``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 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 <efi.h>
#include <efilib.h>
#include <libi386.h>
#include <machine/bootinfo.h>
#define EFI_INTEL_FPSWA \
{0xc41b6531,0x97b9,0x11d3,{0x9a,0x29,0x00,0x90,0x27,0x3f,0xc1,0x4d}}
static EFI_GUID fpswa_guid = EFI_INTEL_FPSWA;
/* DIG64 Headless Console & Debug Port Table. */
#define HCDP_TABLE_GUID \
{0xf951938d,0x620b,0x42ef,{0x82,0x79,0xa8,0x4b,0x79,0x61,0x78,0x98}}
static EFI_GUID hcdp_guid = HCDP_TABLE_GUID;
static UINTN mapkey;
uint64_t
ldr_alloc(vm_offset_t va)
{
return (0);
}
int
ldr_bootinfo(struct bootinfo *bi, uint64_t *bi_addr)
{
VOID *fpswa;
EFI_MEMORY_DESCRIPTOR *mm;
EFI_PHYSICAL_ADDRESS addr;
EFI_HANDLE handle;
EFI_STATUS status;
size_t bisz;
UINTN mmsz, pages, sz;
UINT32 mmver;
bi->bi_systab = (uint64_t)ST;
bi->bi_hcdp = (uint64_t)efi_get_table(&hcdp_guid);
sz = sizeof(EFI_HANDLE);
status = BS->LocateHandle(ByProtocol, &fpswa_guid, 0, &sz, &handle);
if (status == 0)
status = BS->HandleProtocol(handle, &fpswa_guid, &fpswa);
bi->bi_fpswa = (status == 0) ? (uint64_t)fpswa : 0;
bisz = (sizeof(struct bootinfo) + 0x0f) & ~0x0f;
/*
* Allocate enough pages to hold the bootinfo block and the memory
* map EFI will return to us. The memory map has an unknown size,
* so we have to determine that first. Note that the AllocatePages
* call can itself modify the memory map, so we have to take that
* into account as well. The changes to the memory map are caused
* by splitting a range of free memory into two (AFAICT), so that
* one is marked as being loader data.
*/
sz = 0;
BS->GetMemoryMap(&sz, NULL, &mapkey, &mmsz, &mmver);
sz += mmsz;
sz = (sz + 15) & ~15;
pages = EFI_SIZE_TO_PAGES(sz + bisz);
status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, pages,
&addr);
if (EFI_ERROR(status)) {
printf("%s: AllocatePages() returned 0x%lx\n", __func__,
(long)status);
return (ENOMEM);
}
/*
* Read the memory map and stash it after bootinfo. Align the
* memory map on a 16-byte boundary (the bootinfo block is page
* aligned).
*/
*bi_addr = addr;
mm = (void *)(addr + bisz);
sz = (EFI_PAGE_SIZE * pages) - bisz;
status = BS->GetMemoryMap(&sz, mm, &mapkey, &mmsz, &mmver);
if (EFI_ERROR(status)) {
printf("%s: GetMemoryMap() returned 0x%lx\n", __func__,
(long)status);
return (EINVAL);
}
bi->bi_memmap = (uint64_t)mm;
bi->bi_memmap_size = sz;
bi->bi_memdesc_size = mmsz;
bi->bi_memdesc_version = mmver;
bcopy(bi, (void *)(*bi_addr), sizeof(*bi));
return (0);
}
int
ldr_enter(const char *kernel)
{
EFI_STATUS status;
status = BS->ExitBootServices(IH, mapkey);
if (EFI_ERROR(status)) {
printf("%s: ExitBootServices() returned 0x%lx\n", __func__,
(long)status);
return (EINVAL);
}
return (0);
}

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sys/boot/i386/efi/elf32_freebsd.c Normal file
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/*-
* Copyright (c) 1998 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 <sys/param.h>
#include <sys/exec.h>
#include <sys/linker.h>
#include <string.h>
#include <machine/bootinfo.h>
#include <machine/elf.h>
#include <stand.h>
#include "bootstrap.h"
#include "../libi386/libi386.h"
#include "../btx/lib/btxv86.h"
extern void __exec(caddr_t addr, ...);
static int elf32_exec(struct preloaded_file *amp);
static int elf32_obj_exec(struct preloaded_file *amp);
struct file_format i386_elf = { elf32_loadfile, elf32_exec };
struct file_format i386_elf_obj = { elf32_obj_loadfile, elf32_obj_exec };
/*
* There is an ELF kernel and one or more ELF modules loaded.
* We wish to start executing the kernel image, so make such
* preparations as are required, and do so.
*/
static int
elf32_exec(struct preloaded_file *fp)
{
struct file_metadata *md;
Elf_Ehdr *ehdr;
vm_offset_t entry, bootinfop, modulep, kernend;
int boothowto, err, bootdev;
if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
return(EFTYPE);
ehdr = (Elf_Ehdr *)&(md->md_data);
err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend);
if (err != 0)
return(err);
entry = ehdr->e_entry & 0xffffff;
printf("Start @ 0x%lx ...\n", entry);
ldr_enter(fp->f_name);
dev_cleanup();
__exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend);
panic("exec returned");
}
static int
elf32_obj_exec(struct preloaded_file *fp)
{
return (EFTYPE);
}

59
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/*-
* Copyright (c) 2010 Rui Paulo <rpaulo@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 ``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 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 <machine/elf.h>
#include "../btx/lib/btxv86.h"
#include "../../common/bootstrap.h"
uint32_t __base;
struct __v86 __v86;
void
__v86int()
{
printf("%s\n", __func__);
exit(1);
}
void
__exec(caddr_t addr, ...)
{
/* XXX this is wrong */
__asm __volatile("movl %cr0, %eax");
__asm __volatile("andl $0x7fffffff, %eax");
__asm __volatile("mov %eax, %cr0");
__asm __volatile("xorl %eax, %eax");
__asm __volatile("mov %eax, %cr3");
__asm __volatile("movl %cr0, %eax");
__asm __volatile("andl $0xfffffffe, %eax");
__asm __volatile("movl %eax, %cr0");
__asm __volatile("jmp %0" :: "r" (addr));
}

59
sys/boot/i386/efi/i386_copy.c Normal file
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/*-
* Copyright (c) 1998 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("$FreeBSD$");
/*
* MD primitives supporting placement of module data
*
* XXX should check load address/size against memory top.
*/
#include <stand.h>
#include "libi386.h"
#include "btxv86.h"
ssize_t
i386_copyin(const void *src, vm_offset_t dest, const size_t len)
{
bcopy(src, PTOV(dest), len);
return(len);
}
ssize_t
i386_copyout(const vm_offset_t src, void *dest, const size_t len)
{
bcopy(PTOV(src), dest, len);
return(len);
}
ssize_t
i386_readin(const int fd, vm_offset_t dest, const size_t len)
{
return (read(fd, PTOV(dest), len));
}

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/* $FreeBSD$ */
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)
ENTRY(_start)
SECTIONS
{
/* Read-only sections, merged into text segment: */
. = 0;
ImageBase = .;
. = SIZEOF_HEADERS;
. = ALIGN(4096);
.eh_frame : {
*(.eh_frame)
}
.text : {
*(.text .stub .text.* .gnu.linkonce.t.*)
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.plt)
} =0x00300000010070000002000001000400
. = ALIGN(4096);
.data : {
*(.rodata .rodata.* .gnu.linkonce.r.*)
*(.rodata1)
*(.sdata2 .sdata2.* .gnu.linkonce.s2.*)
*(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)
*(.opd)
*(.data .data.* .gnu.linkonce.d.*)
*(.data1)
*(.plabel)
*(.dynbss)
*(.bss .bss.* .gnu.linkonce.b.*)
*(COMMON)
}
. = ALIGN(4096);
set_Xcommand_set : {
__start_set_Xcommand_set = .;
*(set_Xcommand_set)
__stop_set_Xcommand_set = .;
}
. = ALIGN(4096);
__gp = .;
.sdata : {
*(.got.plt .got)
*(.sdata .sdata.* .gnu.linkonce.s.*)
*(dynsbss)
*(.sbss .sbss.* .gnu.linkonce.sb.*)
*(.scommon)
}
. = ALIGN(4096);
.dynamic : { *(.dynamic) }
. = ALIGN(4096);
.rel.dyn : {
*(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
*(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
*(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
*(.rel.got)
*(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*)
*(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*)
*(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*)
*(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*)
*(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
*(.rel.plt)
*(.relset_*)
*(.rel.dyn .rel.dyn.*)
}
. = ALIGN(4096);
.reloc : { *(.reloc) }
. = ALIGN(4096);
.hash : { *(.hash) }
. = ALIGN(4096);
.dynsym : { *(.dynsym) }
. = ALIGN(4096);
.dynstr : { *(.dynstr) }
}

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/* $FreeBSD$ */
OUTPUT_FORMAT("elf32-i386-freebsd", "elf32-i386-freebsd", "elf32-i386-freebsd")
OUTPUT_ARCH(i386)
ENTRY(_start)
SECTIONS
{
/* Read-only sections, merged into text segment: */
. = 0;
ImageBase = .;
. = SIZEOF_HEADERS;
. = ALIGN(4096);
.text : {
*(.text .stub .text.* .gnu.linkonce.t.*)
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.plt)
} =0x00300000010070000002000001000400
. = ALIGN(4096);
.data : {
*(.rodata .rodata.* .gnu.linkonce.r.*)
*(.rodata1)
*(.sdata2 .sdata2.* .gnu.linkonce.s2.*)
*(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)
*(.opd)
*(.data .data.* .gnu.linkonce.d.*)
*(.data1)
*(.plabel)
*(.dynbss)
*(.bss .bss.* .gnu.linkonce.b.*)
*(COMMON)
}
. = ALIGN(4096);
set_Xcommand_set : {
__start_set_Xcommand_set = .;
*(set_Xcommand_set)
__stop_set_Xcommand_set = .;
}
. = ALIGN(4096);
__gp = .;
.sdata : {
*(.got.plt .got)
*(.sdata .sdata.* .gnu.linkonce.s.*)
*(dynsbss)
*(.sbss .sbss.* .gnu.linkonce.sb.*)
*(.scommon)
}
. = ALIGN(4096);
.dynamic : { *(.dynamic) }
. = ALIGN(4096);
.rel.dyn : {
*(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
*(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
*(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
*(.rel.got)
*(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*)
*(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*)
*(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*)
*(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*)
*(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
*(.rel.plt)
*(.relset_*)
*(.rel.dyn .rel.dyn.*)
}
. = ALIGN(4096);
.reloc : { *(.reloc) }
. = ALIGN(4096);
.hash : { *(.hash) }
. = ALIGN(4096);
.dynsym : { *(.dynsym) }
. = ALIGN(4096);
.dynstr : { *(.dynstr) }
}

371
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/*-
* Copyright (c) 2008-2010 Rui Paulo
* Copyright (c) 2006 Marcel Moolenaar
* 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 ``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 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 <string.h>
#include <setjmp.h>
#include <efi.h>
#include <efilib.h>
#include <bootstrap.h>
#include "../libi386/libi386.h"
extern char bootprog_name[];
extern char bootprog_rev[];
extern char bootprog_date[];
extern char bootprog_maker[];
struct devdesc currdev; /* our current device */
struct arch_switch archsw; /* MI/MD interface boundary */
EFI_GUID acpi = ACPI_TABLE_GUID;
EFI_GUID acpi20 = ACPI_20_TABLE_GUID;
EFI_GUID devid = DEVICE_PATH_PROTOCOL;
EFI_GUID imgid = LOADED_IMAGE_PROTOCOL;
EFI_GUID mps = MPS_TABLE_GUID;
EFI_GUID netid = EFI_SIMPLE_NETWORK_PROTOCOL;
EFI_GUID smbios = SMBIOS_TABLE_GUID;
EFI_STATUS
main(int argc, CHAR16 *argv[])
{
char vendor[128];
EFI_LOADED_IMAGE *img;
int i;
/*
* XXX Chicken-and-egg problem; we want to have console output
* early, but some console attributes may depend on reading from
* eg. the boot device, which we can't do yet. We can use
* printf() etc. once this is done.
*/
cons_probe();
/*
* March through the device switch probing for things.
*/
for (i = 0; devsw[i] != NULL; i++)
if (devsw[i]->dv_init != NULL)
(devsw[i]->dv_init)();
/* Get our loaded image protocol interface structure. */
BS->HandleProtocol(IH, &imgid, (VOID**)&img);
printf("Image base: 0x%lx\n", (u_long)img->ImageBase);
printf("EFI version: %d.%02d\n", ST->Hdr.Revision >> 16,
ST->Hdr.Revision & 0xffff);
printf("EFI Firmware: ");
/* printf doesn't understand EFI Unicode */
ST->ConOut->OutputString(ST->ConOut, ST->FirmwareVendor);
printf(" (rev %d.%02d)\n", ST->FirmwareRevision >> 16,
ST->FirmwareRevision & 0xffff);
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
printf("(%s, %s)\n", bootprog_maker, bootprog_date);
efi_handle_lookup(img->DeviceHandle, &currdev.d_dev, &currdev.d_unit);
currdev.d_type = currdev.d_dev->dv_type;
/*
* Disable the watchdog timer. By default the boot manager sets
* the timer to 5 minutes before invoking a boot option. If we
* want to return to the boot manager, we have to disable the
* watchdog timer and since we're an interactive program, we don't
* want to wait until the user types "quit". The timer may have
* fired by then. We don't care if this fails. It does not prevent
* normal functioning in any way...
*/
BS->SetWatchdogTimer(0, 0, 0, NULL);
env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&currdev),
i386_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&currdev), env_noset,
env_nounset);
setenv("LINES", "24", 1); /* optional */
archsw.arch_autoload = i386_autoload;
archsw.arch_getdev = i386_getdev;
archsw.arch_copyin = i386_copyin;
archsw.arch_copyout = i386_copyout;
archsw.arch_readin = i386_readin;
interact(); /* doesn't return */
return (EFI_SUCCESS); /* keep compiler happy */
}
COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
static int
command_reboot(int argc, char *argv[])
{
int i;
for (i = 0; devsw[i] != NULL; ++i)
if (devsw[i]->dv_cleanup != NULL)
(devsw[i]->dv_cleanup)();
RS->ResetSystem(EfiResetCold, EFI_SUCCESS, 23,
(CHAR16 *)"Reboot from the loader");
/* NOTREACHED */
return (CMD_ERROR);
}
COMMAND_SET(quit, "quit", "exit the loader", command_quit);
static int
command_quit(int argc, char *argv[])
{
exit(0);
return (CMD_OK);
}
COMMAND_SET(memmap, "memmap", "print memory map", command_memmap);
static int
command_memmap(int argc, char *argv[])
{
UINTN sz;
EFI_MEMORY_DESCRIPTOR *map, *p;
UINTN key, dsz;
UINT32 dver;
EFI_STATUS status;
int i, ndesc;
static char *types[] = {
"Reserved",
"LoaderCode",
"LoaderData",
"BootServicesCode",
"BootServicesData",
"RuntimeServicesCode",
"RuntimeServicesData",
"ConventionalMemory",
"UnusableMemory",
"ACPIReclaimMemory",
"ACPIMemoryNVS",
"MemoryMappedIO",
"MemoryMappedIOPortSpace",
"PalCode"
};
sz = 0;
status = BS->GetMemoryMap(&sz, 0, &key, &dsz, &dver);
if (status != EFI_BUFFER_TOO_SMALL) {
printf("Can't determine memory map size\n");
return CMD_ERROR;
}
map = malloc(sz);
status = BS->GetMemoryMap(&sz, map, &key, &dsz, &dver);
if (EFI_ERROR(status)) {
printf("Can't read memory map\n");
return CMD_ERROR;
}
ndesc = sz / dsz;
printf("%23s %12s %12s %8s %4s\n",
"Type", "Physical", "Virtual", "#Pages", "Attr");
for (i = 0, p = map; i < ndesc;
i++, p = NextMemoryDescriptor(p, dsz)) {
printf("%23s %012lx %012lx %08lx ",
types[p->Type],
p->PhysicalStart,
p->VirtualStart,
p->NumberOfPages);
if (p->Attribute & EFI_MEMORY_UC)
printf("UC ");
if (p->Attribute & EFI_MEMORY_WC)
printf("WC ");
if (p->Attribute & EFI_MEMORY_WT)
printf("WT ");
if (p->Attribute & EFI_MEMORY_WB)
printf("WB ");
if (p->Attribute & EFI_MEMORY_UCE)
printf("UCE ");
if (p->Attribute & EFI_MEMORY_WP)
printf("WP ");
if (p->Attribute & EFI_MEMORY_RP)
printf("RP ");
if (p->Attribute & EFI_MEMORY_XP)
printf("XP ");
printf("\n");
}
return CMD_OK;
}
COMMAND_SET(configuration, "configuration",
"print configuration tables", command_configuration);
static const char *
guid_to_string(EFI_GUID *guid)
{
static char buf[40];
sprintf(buf, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
guid->Data1, guid->Data2, guid->Data3, guid->Data4[0],
guid->Data4[1], guid->Data4[2], guid->Data4[3], guid->Data4[4],
guid->Data4[5], guid->Data4[6], guid->Data4[7]);
return (buf);
}
static int
command_configuration(int argc, char *argv[])
{
int i;
printf("NumberOfTableEntries=%ld\n", ST->NumberOfTableEntries);
for (i = 0; i < ST->NumberOfTableEntries; i++) {
EFI_GUID *guid;
printf(" ");
guid = &ST->ConfigurationTable[i].VendorGuid;
if (!memcmp(guid, &mps, sizeof(EFI_GUID)))
printf("MPS Table");
else if (!memcmp(guid, &acpi, sizeof(EFI_GUID)))
printf("ACPI Table");
else if (!memcmp(guid, &acpi20, sizeof(EFI_GUID)))
printf("ACPI 2.0 Table");
else if (!memcmp(guid, &smbios, sizeof(EFI_GUID)))
printf("SMBIOS Table");
else
printf("Unknown Table (%s)", guid_to_string(guid));
printf(" at %p\n", ST->ConfigurationTable[i].VendorTable);
}
return CMD_OK;
}
COMMAND_SET(mode, "mode", "change or display text modes", command_mode);
static int
command_mode(int argc, char *argv[])
{
unsigned int cols, rows, mode;
int i;
char *cp;
char rowenv[8];
EFI_STATUS status;
SIMPLE_TEXT_OUTPUT_INTERFACE *conout;
conout = ST->ConOut;
if (argc > 1) {
mode = strtol(argv[1], &cp, 0);
if (cp[0] != '\0') {
printf("Invalid mode\n");
return (CMD_ERROR);
}
status = conout->QueryMode(conout, mode, &cols, &rows);
if (EFI_ERROR(status)) {
printf("invalid mode %d\n", mode);
return (CMD_ERROR);
}
status = conout->SetMode(conout, mode);
if (EFI_ERROR(status)) {
printf("couldn't set mode %d\n", mode);
return (CMD_ERROR);
}
sprintf(rowenv, "%d", rows);
setenv("LINES", rowenv, 1);
return (CMD_OK);
}
for (i = 0; ; i++) {
status = conout->QueryMode(conout, i, &cols, &rows);
if (EFI_ERROR(status))
break;
printf("Mode %d: %d columns, %d rows\n", i, cols, rows);
}
if (i != 0)
printf("Choose the mode with \"col <mode number>\"\n");
return (CMD_OK);
}
COMMAND_SET(nvram, "nvram", "get or set NVRAM variables", command_nvram);
static int
command_nvram(int argc, char *argv[])
{
CHAR16 var[128];
CHAR16 *data;
EFI_STATUS status;
EFI_GUID varguid = { 0,0,0,{0,0,0,0,0,0,0,0} };
unsigned int varsz;
unsigned int datasz;
SIMPLE_TEXT_OUTPUT_INTERFACE *conout;
int i;
conout = ST->ConOut;
/* Initiate the search */
status = RS->GetNextVariableName(&varsz, NULL, NULL);
for (; status != EFI_NOT_FOUND; ) {
status = RS->GetNextVariableName(&varsz, var,
&varguid);
//if (EFI_ERROR(status))
//break;
conout->OutputString(conout, var);
printf("=");
datasz = 0;
status = RS->GetVariable(var, &varguid, NULL, &datasz,
NULL);
/* XXX: check status */
data = malloc(datasz);
status = RS->GetVariable(var, &varguid, NULL, &datasz,
data);
if (EFI_ERROR(status))
printf("<error retrieving variable>");
else {
for (i = 0; i < datasz; i++) {
if (isalnum(data[i]) || isspace(data[i]))
printf("%c", data[i]);
else
printf("\\x%02x", data[i]);
}
}
/* XXX */
pager_output("\n");
free(data);
}
return (CMD_OK);
}

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/*-
* Copyright (c) 2008-2010 Rui Paulo <rpaulo@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 <sys/types.h>
#include <sys/elf32.h>
#include <efi.h>
/*
* XXX: we can't include sys/systm.h.
*/
#ifndef CTASSERT /* Allow lint to override */
#define CTASSERT(x) _CTASSERT(x, __LINE__)
#define _CTASSERT(x, y) __CTASSERT(x, y)
#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
#endif
/*
* A simple relocator for IA32 EFI binaries.
*/
EFI_STATUS
_reloc(unsigned long ImageBase, Elf32_Dyn *dynamic, EFI_HANDLE image_handle,
EFI_SYSTEM_TABLE *system_table)
{
unsigned long relsz, relent;
unsigned long *newaddr;
Elf32_Rel *rel;
Elf32_Dyn *dynp;
/*
* Find the relocation address, its size and the relocation entry.
*/
relsz = 0;
relent = 0;
for (dynp = dynamic; dynp->d_tag != DT_NULL; dynp++) {
switch (dynp->d_tag) {
case DT_REL:
rel = (Elf32_Rel *) ((unsigned long) dynp->d_un.d_ptr +
ImageBase);
break;
case DT_RELSZ:
relsz = dynp->d_un.d_val;
break;
case DT_RELENT:
relent = dynp->d_un.d_val;
break;
default:
break;
}
}
/*
* Perform the actual relocation.
* XXX: We are reusing code for the amd64 version of this, but
* we must make sure the relocation types are the same.
*/
CTASSERT(R_386_NONE == R_X86_64_NONE);
CTASSERT(R_386_RELATIVE == R_X86_64_RELATIVE);
for (; relsz > 0; relsz -= relent) {
switch (ELF32_R_TYPE(rel->r_info)) {
case R_386_NONE:
/* No relocation needs be performed. */
break;
case R_386_RELATIVE:
/* Address relative to the base address. */
newaddr = (unsigned long *)(ImageBase + rel->r_offset);
*newaddr += ImageBase;
break;
default:
/* XXX: do we need other relocations ? */
return (EFI_LOAD_ERROR);
}
rel = (Elf32_Rel *) ((caddr_t) rel + relent);
}
return (EFI_SUCCESS);
}

70
sys/boot/i386/efi/start.S Normal file
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/*-
* Copyright (c) 2008-2010 Rui Paulo <rpaulo@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.
*
* $FreeBSD$
*/
.text
#include <machine/asm.h>
#define EFI_SUCCESS 0
/*
* EFI entry point.
* _start(EFI_IMAGE image_handle, EFI_SYSTEM_TABLE *system_table);
*
* We calculate the base address along with _DYNAMIC, relocate us and finally
* pass control to efi_main.
*/
ENTRY(_start)
pushl %ebp
movl %esp, %ebp
pushl 12(%ebp) /* image_handle */
pushl 8(%ebp) /* system_table */
call 0f
0: popl %eax
movl %eax, %ebx
addl $ImageBase-0b, %eax
addl $_DYNAMIC-0b, %ebx
pushl %ebx /* dynamic */
pushl %eax /* ImageBase */
call _reloc
cmpl $EFI_SUCCESS, %eax
jne 1f
popl %ebx /* remove ImageBase from the stack */
popl %ebx /* remove dynamic from the stack */
call efi_main
1: leave
ret
END(_start)
.data
.section .reloc, "a"
.long 0
.long 10
.word 0

7
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$FreeBSD$
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.
1.1: Keep in sync with i386 version.
0.1: Initial i386 version. Derived from ia64.