Add support for loading kernels over NFS.

sys/stand/efiboot/boot.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: boot.c,v 1.13 2018/11/02 01:22:39 jmcneill Exp $	*/
+/*	$NetBSD: boot.c,v 1.14 2018/11/15 23:52:33 jmcneill Exp $	*/
 
 /*-
  * Copyright (c) 2016 Kimihiro Nonaka <nonaka@netbsd.org>
@@ -72,7 +72,7 @@ static const char *efi_memory_type[] = {
 static char default_device[32];
 static char initrd_path[255];
 static char dtb_path[255];
-static char bootfile[255];
+static char netbsd_path[255];
 
 #define	DEFTIMEOUT	5
 #define DEFFILENAME	names[0]
@@ -146,7 +146,6 @@ command_dev(char *arg)
 	} else {
 		efi_block_show();
 		efi_net_show();
-		efi_pxe_show();
 	}
 
 	if (strlen(default_device) > 0) {
@@ -323,9 +322,9 @@ get_dtb_path(void)
 int
 set_bootfile(const char *arg)
 {
-	if (strlen(arg) + 1 > sizeof(bootfile))
+	if (strlen(arg) + 1 > sizeof(netbsd_path))
 		return ERANGE;
-	strcpy(bootfile, arg);
+	strcpy(netbsd_path, arg);
 	return 0;
 }
 
@@ -388,7 +387,7 @@ boot(void)
 	print_banner();
 	printf("Press return to boot now, any other key for boot prompt\n");
 
-	if (bootfile[0] != '\0')
+	if (netbsd_path[0] != '\0')
 		currname = -1;
 	else
 		currname = 0;
@@ -396,13 +395,13 @@ boot(void)
 	for (; currname < (int)NUMNAMES; currname++) {
 		if (currname >= 0)
 			set_bootfile(names[currname]);
-		printf("booting %s - starting in ", bootfile);
+		printf("booting %s - starting in ", netbsd_path);
 
 		c = awaitkey(DEFTIMEOUT, 1);
 		if (c != '\r' && c != '\n' && c != '\0')
 			bootprompt(); /* does not return */
 
-		exec_netbsd(bootfile, "");
+		exec_netbsd(netbsd_path, "");
 	}
 
 	bootprompt();	/* does not return */

sys/stand/efiboot/conf.c

@@ -1,4 +1,4 @@
-/* $NetBSD: conf.c,v 1.3 2018/09/03 00:04:02 jmcneill Exp $ */
+/* $NetBSD: conf.c,v 1.4 2018/11/15 23:52:33 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
@@ -34,6 +34,7 @@
 #include <lib/libsa/ufs.h>
 #include <lib/libsa/dosfs.h>
 #include <lib/libsa/tftp.h>
+#include <lib/libsa/nfs.h>
 #include <lib/libsa/net.h>
 #include <lib/libsa/dev_net.h>
 
@@ -59,3 +60,4 @@ int nfsys = __arraycount(file_system);
 
 struct fs_ops null_fs_ops = FS_OPS(null);
 struct fs_ops tftp_fs_ops = FS_OPS(tftp);
+struct fs_ops nfs_fs_ops = FS_OPS(nfs);

sys/stand/efiboot/dev_net.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: dev_net.c,v 1.1 2018/09/03 00:04:02 jmcneill Exp $	*/
+/*	$NetBSD: dev_net.c,v 1.2 2018/11/15 23:52:33 jmcneill Exp $	*/
 
 /*-
  * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
@@ -37,6 +37,7 @@
 #include <lib/libsa/netif.h>
 #include <lib/libsa/bootparam.h>
 #include <lib/libsa/bootp.h>
+#include <lib/libsa/nfs.h>
 
 #include "dev_net.h"
 
@@ -68,6 +69,18 @@ net_open(struct open_file *f, ...)
 
 		printf("boot: client ip: %s\n", inet_ntoa(myip));
 		printf("boot: server ip: %s\n", inet_ntoa(rootip));
+		if (rootpath[0] != '\0')
+			printf("boot: server path: %s\n", rootpath);
+		if (bootfile[0] != '\0')
+			printf("boot: file name: %s\n", bootfile);
+	}
+
+	if (rootpath[0] != '\0') {
+		error = nfs_mount(net_socket, rootip, rootpath);
+		if (error) {
+			printf("NFS mount error=%d\n", errno);
+			goto fail;
+		}
 	}
 
 	f->f_devdata = &net_socket;

sys/stand/efiboot/devopen.c

@@ -1,4 +1,4 @@
-/* $NetBSD: devopen.c,v 1.3 2018/09/03 00:04:02 jmcneill Exp $ */
+/* $NetBSD: devopen.c,v 1.4 2018/11/15 23:52:33 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
@@ -36,7 +36,12 @@ devopen(struct open_file *f, const char *fname, char **file)
 	int error;
 
 	error = efi_net_open(f, fname, file);
-	file_system[0] = error ? null_fs_ops : tftp_fs_ops;
+	if (error)
+		file_system[0] = null_fs_ops;
+	else if (rootpath[0] != '\0')
+		file_system[0] = nfs_fs_ops;
+	else
+		file_system[0] = tftp_fs_ops;
 
 	if (error)
 		error = efi_block_open(f, fname, file);

sys/stand/efiboot/efiboot.h

@@ -1,4 +1,4 @@
-/*	$NetBSD: efiboot.h,v 1.8 2018/10/26 20:56:35 mrg Exp $	*/
+/*	$NetBSD: efiboot.h,v 1.9 2018/11/15 23:52:33 jmcneill Exp $	*/
 
 /*-
  * Copyright (c) 2016 Kimihiro Nonaka <nonaka@netbsd.org>
@@ -33,6 +33,7 @@
 #include <lib/libkern/libkern.h>
 
 #include <loadfile.h>
+#include <net.h>
 
 #include "efiboot_machdep.h"
 
@@ -45,6 +46,7 @@ struct boot_command {
 /* conf.c */
 extern struct fs_ops null_fs_ops;
 extern struct fs_ops tftp_fs_ops;
+extern struct fs_ops nfs_fs_ops;
 
 /* boot.c */
 void boot(void);
@@ -82,15 +84,19 @@ int efi_device_path_depth(EFI_DEVICE_PATH *dp, int);
 int efi_device_path_ncmp(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *, int);
 
 /* efinet.c */
+struct efi_net_if {
+	const char *if_name;
+	uint8_t if_mac[6];
+};
 int efi_net_open(struct open_file *, ...);
 void efi_net_probe(void);
 void efi_net_show(void);
 int efi_net_get_booted_interface_unit(void);
+int efi_net_get_booted_macaddr(uint8_t *);
 extern struct netif_driver efinetif;
 
 /* efipxe.c */
 void efi_pxe_probe(void);
-void efi_pxe_show(void);
 bool efi_pxe_match_booted_interface(const EFI_MAC_ADDRESS *, UINT32);
 
 /* exec.c */

sys/stand/efiboot/efifdt.c

@@ -1,4 +1,4 @@
-/* $NetBSD: efifdt.c,v 1.13 2018/11/02 01:22:39 jmcneill Exp $ */
+/* $NetBSD: efifdt.c,v 1.14 2018/11/15 23:52:33 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
@@ -194,6 +194,7 @@ void
 efi_fdt_bootargs(const char *bootargs)
 {
 	struct efi_block_part *bpart = efi_block_boot_part();
+	uint8_t macaddr[6];
 	int chosen;
 
 	chosen = fdt_path_offset(fdt_data, FDT_CHOSEN_NODE_PATH);
@@ -229,6 +230,8 @@ efi_fdt_bootargs(const char *bootargs)
 		default:
 			break;
 		}
+	} else if (efi_net_get_booted_macaddr(macaddr) == 0) {
+		fdt_setprop(fdt_data, chosen, "netbsd,booted-mac-address", macaddr, sizeof(macaddr));
 	}
 }
 

sys/stand/efiboot/efinet.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: efinet.c,v 1.3 2018/09/04 21:29:54 jmcneill Exp $	*/
+/*	$NetBSD: efinet.c,v 1.4 2018/11/15 23:52:33 jmcneill Exp $	*/
 
 /*-
  * Copyright (c) 2001 Doug Rabson
@@ -465,7 +465,7 @@ efi_net_show(void)
 		eni = dif->dif_private;
 		net = eni->net;
 
-		printf("net net%d", dif->dif_unit);
+		printf("net%d", dif->dif_unit);
 		if (net->Mode != NULL) {
 			for (UINT32 x = 0; x < net->Mode->HwAddressSize; x++) {
 				printf("%c%02x", x == 0 ? ' ' : ':',
@@ -500,6 +500,27 @@ efi_net_get_booted_interface_unit(void)
 	return -1;
 }
 
+int
+efi_net_get_booted_macaddr(uint8_t *mac)
+{
+	const struct netif_dif *dif;
+	const struct efinetinfo *eni;
+	EFI_SIMPLE_NETWORK *net;
+	int i;
+
+	for (i = 0; i < efinetif.netif_nifs; i++) {
+		dif = &efinetif.netif_ifs[i];
+		eni = dif->dif_private;
+		net = eni->net;
+		if (eni->bootdev && net->Mode != NULL && net->Mode->HwAddressSize == 6) {
+			memcpy(mac, net->Mode->PermanentAddress.Addr, 6);
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
 int
 efi_net_open(struct open_file *f, ...)
 {
@@ -508,7 +529,7 @@ efi_net_open(struct open_file *f, ...)
 	struct devdesc desc;
 	intmax_t dev;
 	va_list ap;
-	int n;
+	int n, error;
 
 	va_start(ap, f);
 	fname = va_arg(ap, const char *);
@@ -551,5 +572,9 @@ efi_net_open(struct open_file *f, ...)
 	strlcpy(desc.d_name, "net", sizeof(desc.d_name));
 	desc.d_unit = dev;
 
-	return DEV_OPEN(f->f_dev)(f, &desc);
+	error = DEV_OPEN(f->f_dev)(f, &desc);
+	if (error)
+		return error;
+
+	return 0;
 }

sys/stand/efiboot/efipxe.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: efipxe.c,v 1.1 2018/09/03 00:04:02 jmcneill Exp $	*/
+/*	$NetBSD: efipxe.c,v 1.2 2018/11/15 23:52:33 jmcneill Exp $	*/
 /*	$OpenBSD: efipxe.c,v 1.3 2018/01/30 20:19:06 naddy Exp $	*/
 
 /*
@@ -112,21 +112,6 @@ efi_pxe_probe(void)
 	}
 }
 
-void
-efi_pxe_show(void)
-{
-	const struct efipxeinfo *epi;
-	UINT32 i, n;
-
-	n = 0;
-	TAILQ_FOREACH(epi, &efi_pxelist, list) {
-		printf("pxe pxe%d", n++);
-		for (i = 0; i < epi->addrsz; i++)
-			printf("%c%02x", i == 0 ? ' ' : ':', epi->mac.Addr[i]);
-		printf("\n");
-	}
-}
-
 bool
 efi_pxe_match_booted_interface(const EFI_MAC_ADDRESS *mac, UINT32 addrsz)
 {

sys/stand/efiboot/version

@@ -1,4 +1,4 @@
-$NetBSD: version,v 1.7 2018/11/01 00:43:38 jmcneill Exp $
+$NetBSD: version,v 1.8 2018/11/15 23:52:33 jmcneill Exp $
 
 NOTE ANY CHANGES YOU MAKE TO THE EFI BOOTLOADER HERE.  The format of this
 file is important - make sure the entries are appended on end, last item
@@ -11,3 +11,4 @@ is taken as the current.
 1.4:	Add bootfile support.
 1.5:	EFI runtime support.
 1.6:	Add GPT support.
+1.7:	Add NFS support.