mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-09-23 08:01:59 +00:00
79f663515a
We use the terms 'distro' to mean extlinux but they are not really the same. 'Distro' could refer to any method of booting a distribution, whereas extlinux is a particular method. Also we sometimes use syslinux, but it is better to use the same term in all cases. Rename distro to syslinux and also update bootstd uses of syslinux to use extlinux instead. Signed-off-by: Simon Glass <sjg@chromium.org>
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Bootdevice for ethernet (uses PXE)
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*
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* Copyright 2021 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#define LOG_CATEGORY UCLASS_BOOTSTD
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#include <common.h>
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#include <bootdev.h>
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#include <bootflow.h>
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#include <command.h>
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#include <bootmeth.h>
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#include <dm.h>
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#include <extlinux.h>
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#include <init.h>
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#include <log.h>
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#include <net.h>
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#include <test/test.h>
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static int eth_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
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struct bootflow *bflow)
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{
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char name[60];
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int ret;
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/* Must be an Ethernet device */
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ret = bootflow_iter_check_net(iter);
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if (ret)
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return log_msg_ret("net", ret);
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ret = bootmeth_check(bflow->method, iter);
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if (ret)
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return log_msg_ret("check", ret);
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/*
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* Like extlinux boot, this assumes there is only one Ethernet device.
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* In this case, that means that @eth is ignored
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*/
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snprintf(name, sizeof(name), "%s.%d", dev->name, iter->part);
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bflow->name = strdup(name);
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if (!bflow->name)
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return log_msg_ret("name", -ENOMEM);
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/* See distro_pxe_read_bootflow() for the standard impl of this */
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log_debug("dhcp complete - reading bootflow with method '%s'\n",
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bflow->method->name);
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ret = bootmeth_read_bootflow(bflow->method, bflow);
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log_debug("reading bootflow returned %d\n", ret);
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if (ret)
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return log_msg_ret("method", ret);
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return 0;
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}
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static int eth_bootdev_bind(struct udevice *dev)
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{
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struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
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ucp->prio = BOOTDEVP_6_NET_BASE;
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return 0;
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}
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static int eth_bootdev_hunt(struct bootdev_hunter *info, bool show)
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{
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int ret;
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if (!test_eth_enabled())
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return 0;
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/* init PCI first since this is often used to provide Ehternet */
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if (IS_ENABLED(CONFIG_PCI)) {
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ret = pci_init();
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if (ret)
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log_warning("Failed to init PCI (%dE)\n", ret);
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}
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/*
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* Ethernet devices can also come from USB, but that is a higher
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* priority (BOOTDEVP_5_SCAN_SLOW) than ethernet, so it should have been
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* enumerated already. If something like 'bootflow scan dhcp' is used
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* then the user will need to run 'usb start' first.
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*/
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if (IS_ENABLED(CONFIG_CMD_DHCP)) {
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ret = dhcp_run(0, NULL, false);
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if (ret)
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return -EINVAL;
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}
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return 0;
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}
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struct bootdev_ops eth_bootdev_ops = {
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.get_bootflow = eth_get_bootflow,
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};
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static const struct udevice_id eth_bootdev_ids[] = {
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{ .compatible = "u-boot,bootdev-eth" },
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{ }
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};
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U_BOOT_DRIVER(eth_bootdev) = {
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.name = "eth_bootdev",
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.id = UCLASS_BOOTDEV,
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.ops = ð_bootdev_ops,
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.bind = eth_bootdev_bind,
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.of_match = eth_bootdev_ids,
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};
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BOOTDEV_HUNTER(eth_bootdev_hunt) = {
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.prio = BOOTDEVP_6_NET_BASE,
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.uclass = UCLASS_ETH,
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.hunt = eth_bootdev_hunt,
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.drv = DM_DRIVER_REF(eth_bootdev),
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};
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