1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2010-2011 Calxeda, Inc.
4 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
12 #include "pxe_utils.h"
15 const char *pxe_default_paths[] = {
17 #ifdef CONFIG_SYS_BOARD
18 "default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC "-" CONFIG_SYS_BOARD,
20 "default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC,
22 "default-" CONFIG_SYS_ARCH,
27 static int do_get_tftp(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
29 char *tftp_argv[] = {"tftp", NULL, NULL, NULL};
31 tftp_argv[1] = file_addr;
32 tftp_argv[2] = (void *)file_path;
34 if (do_tftpb(cmdtp, 0, 3, tftp_argv))
41 * Looks for a pxe file with a name based on the pxeuuid environment variable.
43 * Returns 1 on success or < 0 on error.
45 static int pxe_uuid_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
49 uuid_str = from_env("pxeuuid");
54 return get_pxelinux_path(cmdtp, uuid_str, pxefile_addr_r);
58 * Looks for a pxe file with a name based on the 'ethaddr' environment
61 * Returns 1 on success or < 0 on error.
63 static int pxe_mac_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
68 err = format_mac_pxe(mac_str, sizeof(mac_str));
73 return get_pxelinux_path(cmdtp, mac_str, pxefile_addr_r);
77 * Looks for pxe files with names based on our IP address. See pxelinux
78 * documentation for details on what these file names look like. We match
81 * Returns 1 on success or < 0 on error.
83 static int pxe_ipaddr_paths(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
88 sprintf(ip_addr, "%08X", ntohl(net_ip.s_addr));
90 for (mask_pos = 7; mask_pos >= 0; mask_pos--) {
91 err = get_pxelinux_path(cmdtp, ip_addr, pxefile_addr_r);
96 ip_addr[mask_pos] = '\0';
102 * Entry point for the 'pxe get' command.
103 * This Follows pxelinux's rules to download a config file from a tftp server.
104 * The file is stored at the location given by the pxefile_addr_r environment
105 * variable, which must be set.
107 * UUID comes from pxeuuid env variable, if defined
108 * MAC addr comes from ethaddr env variable, if defined
111 * see http://syslinux.zytor.com/wiki/index.php/PXELINUX
113 * Returns 0 on success or 1 on error.
116 do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
118 char *pxefile_addr_str;
119 unsigned long pxefile_addr_r;
122 do_getfile = do_get_tftp;
125 return CMD_RET_USAGE;
127 pxefile_addr_str = from_env("pxefile_addr_r");
129 if (!pxefile_addr_str)
132 err = strict_strtoul(pxefile_addr_str, 16,
133 (unsigned long *)&pxefile_addr_r);
138 * Keep trying paths until we successfully get a file we're looking
141 if (pxe_uuid_path(cmdtp, pxefile_addr_r) > 0 ||
142 pxe_mac_path(cmdtp, pxefile_addr_r) > 0 ||
143 pxe_ipaddr_paths(cmdtp, pxefile_addr_r) > 0) {
144 printf("Config file found\n");
149 while (pxe_default_paths[i]) {
150 if (get_pxelinux_path(cmdtp, pxe_default_paths[i],
151 pxefile_addr_r) > 0) {
152 printf("Config file found\n");
158 printf("Config file not found\n");
164 * Boots a system using a pxe file
166 * Returns 0 on success, 1 on error.
169 do_pxe_boot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
171 unsigned long pxefile_addr_r;
172 struct pxe_menu *cfg;
173 char *pxefile_addr_str;
175 do_getfile = do_get_tftp;
178 pxefile_addr_str = from_env("pxefile_addr_r");
179 if (!pxefile_addr_str)
182 } else if (argc == 2) {
183 pxefile_addr_str = argv[1];
185 return CMD_RET_USAGE;
188 if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
189 printf("Invalid pxefile address: %s\n", pxefile_addr_str);
193 cfg = parse_pxefile(cmdtp, pxefile_addr_r);
196 printf("Error parsing config file\n");
200 handle_pxe_menu(cmdtp, cfg);
202 destroy_pxe_menu(cfg);
204 copy_filename(net_boot_file_name, "", sizeof(net_boot_file_name));
209 static cmd_tbl_t cmd_pxe_sub[] = {
210 U_BOOT_CMD_MKENT(get, 1, 1, do_pxe_get, "", ""),
211 U_BOOT_CMD_MKENT(boot, 2, 1, do_pxe_boot, "", "")
214 static int do_pxe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
219 return CMD_RET_USAGE;
223 /* drop initial "pxe" arg */
227 cp = find_cmd_tbl(argv[0], cmd_pxe_sub, ARRAY_SIZE(cmd_pxe_sub));
230 return cp->cmd(cmdtp, flag, argc, argv);
232 return CMD_RET_USAGE;
235 U_BOOT_CMD(pxe, 3, 1, do_pxe,
236 "commands to get and boot from pxe files",
237 "get - try to retrieve a pxe file using tftp\n"
238 "pxe boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n"