EFI boot loader for FreeBSD/i386.

Doesn't boot a kernel yet, but it can read an ELF file from the EFI FAT
partition.

15 files changed, 1663 insertions, 0 deletions

diff --git a/sys/boot/i386/efi/Makefile b/sys/boot/i386/efi/Makefile
new file mode 100644
index 0000000..2d11046
--- /dev/null
+++ b/sys/boot/i386/efi/Makefile
@@ -0,0 +1,69 @@
+# $FreeBSD$
+
+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} ${LIBEFI} -lstand
+
+.include <bsd.prog.mk>
diff --git a/sys/boot/i386/efi/autoload.c b/sys/boot/i386/efi/autoload.c
new file mode 100644
index 0000000..bb43af4
--- /dev/null
+++ b/sys/boot/i386/efi/autoload.c
@@ -0,0 +1,9 @@
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+int
+i386_autoload(void)
+{
+
+	return (0);
+}
diff --git a/sys/boot/i386/efi/bootinfo.c b/sys/boot/i386/efi/bootinfo.c
new file mode 100644
index 0000000..b3a3fa9
--- /dev/null
+++ b/sys/boot/i386/efi/bootinfo.c
@@ -0,0 +1,297 @@
+/*-
+ * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
+ * Copyright (c) 2006 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$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));
+}
diff --git a/sys/boot/i386/efi/conf.c b/sys/boot/i386/efi/conf.c
new file mode 100644
index 0000000..13c2145
--- /dev/null
+++ b/sys/boot/i386/efi/conf.c
@@ -0,0 +1,77 @@
+/*-
+ * 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
+};
diff --git a/sys/boot/i386/efi/devicename.c b/sys/boot/i386/efi/devicename.c
new file mode 100644
index 0000000..c3d9062
--- /dev/null
+++ b/sys/boot/i386/efi/devicename.c
@@ -0,0 +1,169 @@
+/*-
+ * 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);
+}
diff --git a/sys/boot/i386/efi/efimd.c b/sys/boot/i386/efi/efimd.c
new file mode 100644
index 0000000..01905e6
--- /dev/null
+++ b/sys/boot/i386/efi/efimd.c
@@ -0,0 +1,139 @@
+/*-
+ * 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);
+}
diff --git a/sys/boot/i386/efi/elf32_freebsd.c b/sys/boot/i386/efi/elf32_freebsd.c
new file mode 100644
index 0000000..f193735
--- /dev/null
+++ b/sys/boot/i386/efi/elf32_freebsd.c
@@ -0,0 +1,87 @@
+/*-
+ * 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);
+}
diff --git a/sys/boot/i386/efi/exec.c b/sys/boot/i386/efi/exec.c
new file mode 100644
index 0000000..fefbf0b
--- /dev/null
+++ b/sys/boot/i386/efi/exec.c
@@ -0,0 +1,59 @@
+/*-
+ * 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 $0xfffffffe, %eax");
+	__asm __volatile("movl %eax, %cr0");
+	__asm __volatile("jmp %0" :: "r" (addr));
+}
diff --git a/sys/boot/i386/efi/i386_copy.c b/sys/boot/i386/efi/i386_copy.c
new file mode 100644
index 0000000..43c26ce
--- /dev/null
+++ b/sys/boot/i386/efi/i386_copy.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$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));
+}
diff --git a/sys/boot/i386/efi/ldscript.amd64 b/sys/boot/i386/efi/ldscript.amd64
new file mode 100644
index 0000000..9c5a29b
--- /dev/null
+++ b/sys/boot/i386/efi/ldscript.amd64
@@ -0,0 +1,75 @@
+/* $FreeBSD$ */
+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) }
+}
diff --git a/sys/boot/i386/efi/ldscript.i386 b/sys/boot/i386/efi/ldscript.i386
new file mode 100644
index 0000000..fdfda0a
--- /dev/null
+++ b/sys/boot/i386/efi/ldscript.i386
@@ -0,0 +1,72 @@
+/* $FreeBSD$ */
+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) }
+}
diff --git a/sys/boot/i386/efi/main.c b/sys/boot/i386/efi/main.c
new file mode 100644
index 0000000..1ea5c24
--- /dev/null
+++ b/sys/boot/i386/efi/main.c
@@ -0,0 +1,371 @@
+/*-
+ * 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);
+}
diff --git a/sys/boot/i386/efi/reloc.c b/sys/boot/i386/efi/reloc.c
new file mode 100644
index 0000000..24eed0a
--- /dev/null
+++ b/sys/boot/i386/efi/reloc.c
@@ -0,0 +1,103 @@
+/*-
+ * 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);
+}
diff --git a/sys/boot/i386/efi/start.S b/sys/boot/i386/efi/start.S
new file mode 100644
index 0000000..ea4597f
--- /dev/null
+++ b/sys/boot/i386/efi/start.S
@@ -0,0 +1,70 @@
+/*-
+ * 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	$EFI_SUCCESS, %eax
+	jne	1f
+	popl	%ebx		/* remove ImageBase from the stack */
+	popl	%ebx		/* remove dynamic from the stack */
+	call	efi_main
+1:	leave
+	ret
+END(_start)
+
+	.data
+	.section .reloc, "a"
+	.long	0
+	.long	10
+	.word	0
diff --git a/sys/boot/i386/efi/version b/sys/boot/i386/efi/version
new file mode 100644
index 0000000..3a4c47c
--- /dev/null
+++ b/sys/boot/i386/efi/version
@@ -0,0 +1,7 @@
+$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.