mirror of
https://github.com/AsahiLinux/u-boot
synced 2025-03-14 22:07:02 +00:00
98ad145db6
Add what it takes to enable NETDEVICES with NET_LWIP and enable DHCP as well as the dhcp command. CMD_TFTPBOOT is selected by BOOTMETH_EFI due to this code having an implicit dependency on do_tftpb(). Note that PXE is likely non-fonctional with NET_LWIP (or at least not 100% functional) because DHCP option 209 is not supported by the lwIP library. Therefore, BOOTP_PXE_DHCP_OPTION cannot be enabled. Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org> Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
130 lines
2.8 KiB
C
130 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* Copyright (C) 2024 Linaro Ltd. */
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#include <command.h>
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#include <console.h>
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#include <dm/device.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <lwip/dhcp.h>
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#include <lwip/dns.h>
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#include <lwip/timeouts.h>
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#include <net.h>
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#include <time.h>
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#define DHCP_TIMEOUT_MS 10000
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#ifdef CONFIG_CMD_TFTPBOOT
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/* Boot file obtained from DHCP (if present) */
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static char boot_file_name[DHCP_BOOT_FILE_LEN];
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#endif
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static void call_lwip_dhcp_fine_tmr(void *ctx)
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{
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dhcp_fine_tmr();
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sys_timeout(10, call_lwip_dhcp_fine_tmr, NULL);
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}
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static int dhcp_loop(struct udevice *udev)
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{
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char *ipstr = "ipaddr\0\0";
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char *maskstr = "netmask\0\0";
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char *gwstr = "gatewayip\0\0";
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unsigned long start;
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struct netif *netif;
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struct dhcp *dhcp;
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bool bound;
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int idx;
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idx = dev_seq(udev);
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if (idx < 0 || idx > 99) {
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log_err("unexpected idx %d\n", idx);
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return CMD_RET_FAILURE;
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}
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netif = net_lwip_new_netif_noip(udev);
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if (!netif)
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return CMD_RET_FAILURE;
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start = get_timer(0);
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if (dhcp_start(netif))
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return CMD_RET_FAILURE;
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call_lwip_dhcp_fine_tmr(NULL);
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/* Wait for DHCP to complete */
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do {
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net_lwip_rx(udev, netif);
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sys_check_timeouts();
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bound = dhcp_supplied_address(netif);
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if (bound)
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break;
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if (ctrlc()) {
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printf("Abort\n");
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break;
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}
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mdelay(1);
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} while (get_timer(start) < DHCP_TIMEOUT_MS);
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sys_untimeout(call_lwip_dhcp_fine_tmr, NULL);
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if (!bound) {
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net_lwip_remove_netif(netif);
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return CMD_RET_FAILURE;
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}
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dhcp = netif_dhcp_data(netif);
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env_set("bootfile", dhcp->boot_file_name);
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if (idx > 0) {
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sprintf(ipstr, "ipaddr%d", idx);
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sprintf(maskstr, "netmask%d", idx);
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sprintf(gwstr, "gatewayip%d", idx);
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} else {
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net_ip.s_addr = dhcp->offered_ip_addr.addr;
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}
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env_set(ipstr, ip4addr_ntoa(&dhcp->offered_ip_addr));
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env_set(maskstr, ip4addr_ntoa(&dhcp->offered_sn_mask));
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env_set("serverip", ip4addr_ntoa(&dhcp->server_ip_addr));
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if (dhcp->offered_gw_addr.addr != 0)
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env_set(gwstr, ip4addr_ntoa(&dhcp->offered_gw_addr));
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#ifdef CONFIG_PROT_DNS_LWIP
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env_set("dnsip", ip4addr_ntoa(dns_getserver(0)));
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env_set("dnsip2", ip4addr_ntoa(dns_getserver(1)));
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#endif
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#ifdef CONFIG_CMD_TFTPBOOT
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if (dhcp->boot_file_name[0] != '\0')
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strncpy(boot_file_name, dhcp->boot_file_name,
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sizeof(boot_file_name));
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#endif
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printf("DHCP client bound to address %pI4 (%lu ms)\n",
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&dhcp->offered_ip_addr, get_timer(start));
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net_lwip_remove_netif(netif);
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return CMD_RET_SUCCESS;
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}
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int do_dhcp(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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eth_set_current();
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return dhcp_loop(eth_get_dev());
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}
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int dhcp_run(ulong addr, const char *fname, bool autoload)
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{
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char *dhcp_argv[] = {"dhcp", NULL, };
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struct cmd_tbl cmdtp = {}; /* dummy */
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if (autoload) {
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/* Will be supported when TFTP is added */
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return -EOPNOTSUPP;
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}
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return do_dhcp(&cmdtp, 0, 1, dhcp_argv);
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}
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