u-boot/cmd/net.c
Simon Glass 723806cc5b env: Rename some other getenv()-related functions
We are now using an env_ prefix for environment functions. Rename these
other functions as well, for consistency:

   getenv_vlan()
   getenv_bootm_size()
   getenv_bootm_low()
   getenv_bootm_mapsize()
   env_get_default()

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:31:11 -04:00

445 lines
9.7 KiB
C

/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* Boot support
*/
#include <common.h>
#include <command.h>
#include <net.h>
static int netboot_common(enum proto_t, cmd_tbl_t *, int, char * const []);
static int do_bootp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return netboot_common(BOOTP, cmdtp, argc, argv);
}
U_BOOT_CMD(
bootp, 3, 1, do_bootp,
"boot image via network using BOOTP/TFTP protocol",
"[loadAddress] [[hostIPaddr:]bootfilename]"
);
int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int ret;
bootstage_mark_name(BOOTSTAGE_KERNELREAD_START, "tftp_start");
ret = netboot_common(TFTPGET, cmdtp, argc, argv);
bootstage_mark_name(BOOTSTAGE_KERNELREAD_STOP, "tftp_done");
return ret;
}
U_BOOT_CMD(
tftpboot, 3, 1, do_tftpb,
"boot image via network using TFTP protocol",
"[loadAddress] [[hostIPaddr:]bootfilename]"
);
#ifdef CONFIG_CMD_TFTPPUT
static int do_tftpput(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return netboot_common(TFTPPUT, cmdtp, argc, argv);
}
U_BOOT_CMD(
tftpput, 4, 1, do_tftpput,
"TFTP put command, for uploading files to a server",
"Address Size [[hostIPaddr:]filename]"
);
#endif
#ifdef CONFIG_CMD_TFTPSRV
static int do_tftpsrv(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
return netboot_common(TFTPSRV, cmdtp, argc, argv);
}
U_BOOT_CMD(
tftpsrv, 2, 1, do_tftpsrv,
"act as a TFTP server and boot the first received file",
"[loadAddress]\n"
"Listen for an incoming TFTP transfer, receive a file and boot it.\n"
"The transfer is aborted if a transfer has not been started after\n"
"about 50 seconds or if Ctrl-C is pressed."
);
#endif
#ifdef CONFIG_CMD_RARP
int do_rarpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return netboot_common(RARP, cmdtp, argc, argv);
}
U_BOOT_CMD(
rarpboot, 3, 1, do_rarpb,
"boot image via network using RARP/TFTP protocol",
"[loadAddress] [[hostIPaddr:]bootfilename]"
);
#endif
#if defined(CONFIG_CMD_DHCP)
static int do_dhcp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return netboot_common(DHCP, cmdtp, argc, argv);
}
U_BOOT_CMD(
dhcp, 3, 1, do_dhcp,
"boot image via network using DHCP/TFTP protocol",
"[loadAddress] [[hostIPaddr:]bootfilename]"
);
#endif
#if defined(CONFIG_CMD_NFS)
static int do_nfs(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return netboot_common(NFS, cmdtp, argc, argv);
}
U_BOOT_CMD(
nfs, 3, 1, do_nfs,
"boot image via network using NFS protocol",
"[loadAddress] [[hostIPaddr:]bootfilename]"
);
#endif
static void netboot_update_env(void)
{
char tmp[22];
if (net_gateway.s_addr) {
ip_to_string(net_gateway, tmp);
env_set("gatewayip", tmp);
}
if (net_netmask.s_addr) {
ip_to_string(net_netmask, tmp);
env_set("netmask", tmp);
}
if (net_hostname[0])
env_set("hostname", net_hostname);
if (net_root_path[0])
env_set("rootpath", net_root_path);
if (net_ip.s_addr) {
ip_to_string(net_ip, tmp);
env_set("ipaddr", tmp);
}
#if !defined(CONFIG_BOOTP_SERVERIP)
/*
* Only attempt to change serverip if net/bootp.c:store_net_params()
* could have set it
*/
if (net_server_ip.s_addr) {
ip_to_string(net_server_ip, tmp);
env_set("serverip", tmp);
}
#endif
if (net_dns_server.s_addr) {
ip_to_string(net_dns_server, tmp);
env_set("dnsip", tmp);
}
#if defined(CONFIG_BOOTP_DNS2)
if (net_dns_server2.s_addr) {
ip_to_string(net_dns_server2, tmp);
env_set("dnsip2", tmp);
}
#endif
if (net_nis_domain[0])
env_set("domain", net_nis_domain);
#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
if (net_ntp_time_offset) {
sprintf(tmp, "%d", net_ntp_time_offset);
env_set("timeoffset", tmp);
}
#endif
#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
if (net_ntp_server.s_addr) {
ip_to_string(net_ntp_server, tmp);
env_set("ntpserverip", tmp);
}
#endif
}
static int netboot_common(enum proto_t proto, cmd_tbl_t *cmdtp, int argc,
char * const argv[])
{
char *s;
char *end;
int rcode = 0;
int size;
ulong addr;
/* pre-set load_addr */
s = env_get("loadaddr");
if (s != NULL)
load_addr = simple_strtoul(s, NULL, 16);
switch (argc) {
case 1:
break;
case 2: /*
* Only one arg - accept two forms:
* Just load address, or just boot file name. The latter
* form must be written in a format which can not be
* mis-interpreted as a valid number.
*/
addr = simple_strtoul(argv[1], &end, 16);
if (end == (argv[1] + strlen(argv[1])))
load_addr = addr;
else
copy_filename(net_boot_file_name, argv[1],
sizeof(net_boot_file_name));
break;
case 3:
load_addr = simple_strtoul(argv[1], NULL, 16);
copy_filename(net_boot_file_name, argv[2],
sizeof(net_boot_file_name));
break;
#ifdef CONFIG_CMD_TFTPPUT
case 4:
if (strict_strtoul(argv[1], 16, &save_addr) < 0 ||
strict_strtoul(argv[2], 16, &save_size) < 0) {
printf("Invalid address/size\n");
return CMD_RET_USAGE;
}
copy_filename(net_boot_file_name, argv[3],
sizeof(net_boot_file_name));
break;
#endif
default:
bootstage_error(BOOTSTAGE_ID_NET_START);
return CMD_RET_USAGE;
}
bootstage_mark(BOOTSTAGE_ID_NET_START);
size = net_loop(proto);
if (size < 0) {
bootstage_error(BOOTSTAGE_ID_NET_NETLOOP_OK);
return CMD_RET_FAILURE;
}
bootstage_mark(BOOTSTAGE_ID_NET_NETLOOP_OK);
/* net_loop ok, update environment */
netboot_update_env();
/* done if no file was loaded (no errors though) */
if (size == 0) {
bootstage_error(BOOTSTAGE_ID_NET_LOADED);
return CMD_RET_SUCCESS;
}
bootstage_mark(BOOTSTAGE_ID_NET_LOADED);
rcode = bootm_maybe_autostart(cmdtp, argv[0]);
if (rcode == CMD_RET_SUCCESS)
bootstage_mark(BOOTSTAGE_ID_NET_DONE);
else
bootstage_error(BOOTSTAGE_ID_NET_DONE_ERR);
return rcode;
}
#if defined(CONFIG_CMD_PING)
static int do_ping(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if (argc < 2)
return CMD_RET_USAGE;
net_ping_ip = string_to_ip(argv[1]);
if (net_ping_ip.s_addr == 0)
return CMD_RET_USAGE;
if (net_loop(PING) < 0) {
printf("ping failed; host %s is not alive\n", argv[1]);
return CMD_RET_FAILURE;
}
printf("host %s is alive\n", argv[1]);
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
ping, 2, 1, do_ping,
"send ICMP ECHO_REQUEST to network host",
"pingAddress"
);
#endif
#if defined(CONFIG_CMD_CDP)
static void cdp_update_env(void)
{
char tmp[16];
if (cdp_appliance_vlan != htons(-1)) {
printf("CDP offered appliance VLAN %d\n",
ntohs(cdp_appliance_vlan));
vlan_to_string(cdp_appliance_vlan, tmp);
env_set("vlan", tmp);
net_our_vlan = cdp_appliance_vlan;
}
if (cdp_native_vlan != htons(-1)) {
printf("CDP offered native VLAN %d\n", ntohs(cdp_native_vlan));
vlan_to_string(cdp_native_vlan, tmp);
env_set("nvlan", tmp);
net_native_vlan = cdp_native_vlan;
}
}
int do_cdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int r;
r = net_loop(CDP);
if (r < 0) {
printf("cdp failed; perhaps not a CISCO switch?\n");
return CMD_RET_FAILURE;
}
cdp_update_env();
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
cdp, 1, 1, do_cdp,
"Perform CDP network configuration",
"\n"
);
#endif
#if defined(CONFIG_CMD_SNTP)
int do_sntp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *toff;
if (argc < 2) {
net_ntp_server = env_get_ip("ntpserverip");
if (net_ntp_server.s_addr == 0) {
printf("ntpserverip not set\n");
return CMD_RET_FAILURE;
}
} else {
net_ntp_server = string_to_ip(argv[1]);
if (net_ntp_server.s_addr == 0) {
printf("Bad NTP server IP address\n");
return CMD_RET_FAILURE;
}
}
toff = env_get("timeoffset");
if (toff == NULL)
net_ntp_time_offset = 0;
else
net_ntp_time_offset = simple_strtol(toff, NULL, 10);
if (net_loop(SNTP) < 0) {
printf("SNTP failed: host %pI4 not responding\n",
&net_ntp_server);
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
sntp, 2, 1, do_sntp,
"synchronize RTC via network",
"[NTP server IP]\n"
);
#endif
#if defined(CONFIG_CMD_DNS)
int do_dns(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if (argc == 1)
return CMD_RET_USAGE;
/*
* We should check for a valid hostname:
* - Each label must be between 1 and 63 characters long
* - the entire hostname has a maximum of 255 characters
* - only the ASCII letters 'a' through 'z' (case-insensitive),
* the digits '0' through '9', and the hyphen
* - cannot begin or end with a hyphen
* - no other symbols, punctuation characters, or blank spaces are
* permitted
* but hey - this is a minimalist implmentation, so only check length
* and let the name server deal with things.
*/
if (strlen(argv[1]) >= 255) {
printf("dns error: hostname too long\n");
return CMD_RET_FAILURE;
}
net_dns_resolve = argv[1];
if (argc == 3)
net_dns_env_var = argv[2];
else
net_dns_env_var = NULL;
if (net_loop(DNS) < 0) {
printf("dns lookup of %s failed, check setup\n", argv[1]);
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
dns, 3, 1, do_dns,
"lookup the IP of a hostname",
"hostname [envvar]"
);
#endif /* CONFIG_CMD_DNS */
#if defined(CONFIG_CMD_LINK_LOCAL)
static int do_link_local(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
char tmp[22];
if (net_loop(LINKLOCAL) < 0)
return CMD_RET_FAILURE;
net_gateway.s_addr = 0;
ip_to_string(net_gateway, tmp);
env_set("gatewayip", tmp);
ip_to_string(net_netmask, tmp);
env_set("netmask", tmp);
ip_to_string(net_ip, tmp);
env_set("ipaddr", tmp);
env_set("llipaddr", tmp); /* store this for next time */
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
linklocal, 1, 1, do_link_local,
"acquire a network IP address using the link-local protocol",
""
);
#endif /* CONFIG_CMD_LINK_LOCAL */