1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2010-2011 Calxeda, Inc.
4 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
11 #include "pxe_utils.h"
14 const char *pxe_default_paths[] = {
16 #ifdef CONFIG_SYS_BOARD
17 "default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC "-" CONFIG_SYS_BOARD,
19 "default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC,
21 "default-" CONFIG_SYS_ARCH,
26 static int do_get_tftp(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
28 char *tftp_argv[] = {"tftp", NULL, NULL, NULL};
30 tftp_argv[1] = file_addr;
31 tftp_argv[2] = (void *)file_path;
33 if (do_tftpb(cmdtp, 0, 3, tftp_argv))
40 * Looks for a pxe file with a name based on the pxeuuid environment variable.
42 * Returns 1 on success or < 0 on error.
44 static int pxe_uuid_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
48 uuid_str = from_env("pxeuuid");
53 return get_pxelinux_path(cmdtp, uuid_str, pxefile_addr_r);
57 * Looks for a pxe file with a name based on the 'ethaddr' environment
60 * Returns 1 on success or < 0 on error.
62 static int pxe_mac_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
67 err = format_mac_pxe(mac_str, sizeof(mac_str));
72 return get_pxelinux_path(cmdtp, mac_str, pxefile_addr_r);
76 * Looks for pxe files with names based on our IP address. See pxelinux
77 * documentation for details on what these file names look like. We match
80 * Returns 1 on success or < 0 on error.
82 static int pxe_ipaddr_paths(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
87 sprintf(ip_addr, "%08X", ntohl(net_ip.s_addr));
89 for (mask_pos = 7; mask_pos >= 0; mask_pos--) {
90 err = get_pxelinux_path(cmdtp, ip_addr, pxefile_addr_r);
95 ip_addr[mask_pos] = '\0';
101 * Entry point for the 'pxe get' command.
102 * This Follows pxelinux's rules to download a config file from a tftp server.
103 * The file is stored at the location given by the pxefile_addr_r environment
104 * variable, which must be set.
106 * UUID comes from pxeuuid env variable, if defined
107 * MAC addr comes from ethaddr env variable, if defined
110 * see http://syslinux.zytor.com/wiki/index.php/PXELINUX
112 * Returns 0 on success or 1 on error.
115 do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
117 char *pxefile_addr_str;
118 unsigned long pxefile_addr_r;
121 do_getfile = do_get_tftp;
124 return CMD_RET_USAGE;
126 pxefile_addr_str = from_env("pxefile_addr_r");
128 if (!pxefile_addr_str)
131 err = strict_strtoul(pxefile_addr_str, 16,
132 (unsigned long *)&pxefile_addr_r);
137 * Keep trying paths until we successfully get a file we're looking
140 if (pxe_uuid_path(cmdtp, pxefile_addr_r) > 0 ||
141 pxe_mac_path(cmdtp, pxefile_addr_r) > 0 ||
142 pxe_ipaddr_paths(cmdtp, pxefile_addr_r) > 0) {
143 printf("Config file found\n");
148 while (pxe_default_paths[i]) {
149 if (get_pxelinux_path(cmdtp, pxe_default_paths[i],
150 pxefile_addr_r) > 0) {
151 printf("Config file found\n");
157 printf("Config file not found\n");
163 * Boots a system using a pxe file
165 * Returns 0 on success, 1 on error.
168 do_pxe_boot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
170 unsigned long pxefile_addr_r;
171 struct pxe_menu *cfg;
172 char *pxefile_addr_str;
174 do_getfile = do_get_tftp;
177 pxefile_addr_str = from_env("pxefile_addr_r");
178 if (!pxefile_addr_str)
181 } else if (argc == 2) {
182 pxefile_addr_str = argv[1];
184 return CMD_RET_USAGE;
187 if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
188 printf("Invalid pxefile address: %s\n", pxefile_addr_str);
192 cfg = parse_pxefile(cmdtp, pxefile_addr_r);
195 printf("Error parsing config file\n");
199 handle_pxe_menu(cmdtp, cfg);
201 destroy_pxe_menu(cfg);
203 copy_filename(net_boot_file_name, "", sizeof(net_boot_file_name));
208 static cmd_tbl_t cmd_pxe_sub[] = {
209 U_BOOT_CMD_MKENT(get, 1, 1, do_pxe_get, "", ""),
210 U_BOOT_CMD_MKENT(boot, 2, 1, do_pxe_boot, "", "")
213 static int do_pxe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
218 return CMD_RET_USAGE;
222 /* drop initial "pxe" arg */
226 cp = find_cmd_tbl(argv[0], cmd_pxe_sub, ARRAY_SIZE(cmd_pxe_sub));
229 return cp->cmd(cmdtp, flag, argc, argv);
231 return CMD_RET_USAGE;
234 U_BOOT_CMD(pxe, 3, 1, do_pxe,
235 "commands to get and boot from pxe files",
236 "get - try to retrieve a pxe file using tftp\n"
237 "pxe boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n"