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4146c823fc
Sometimes ethernet devices are attached to PCI. Since it is quick to scan, add this into the ethernet hunter. Run dhcp to establish the network connection. Drop this from the bootdev since that is not needed now. Update a log message for clarity. Signed-off-by: Simon Glass <sjg@chromium.org>
120 lines
2.7 KiB
C
120 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 <distro.h>
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#include <dm.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_uses_network(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 distro 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_4_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_4_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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