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https://github.com/u-boot/u-boot.git
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4de979f664
It seems better to call this a 'bootdev' since this is name used in the documentation. The older 'Bootdevice' name is no-longer used and may cause confusion with the 'bootdevice' environment variable. Update throughout to use bootdev. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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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* Bootdev 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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