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https://github.com/smaeul/u-boot.git
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bd90b09288
Some bootdevs must be enumerated before they appear. For example, USB bootdevs are not visible until USB is enumerated. With standard boot this needs to happen automatically, since we only want to enumerate a bus if it is needed. Add a way to define bootdev 'hunters' which can be used to hunt for bootdevs of a given type. Track which ones have been used and add a command to list them. Include a clang work-around which seems to be needed. Signed-off-by: Simon Glass <sjg@chromium.org>
150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* 'bootdev' command
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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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#include <common.h>
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#include <bootdev.h>
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#include <bootflow.h>
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#include <bootstd.h>
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#include <command.h>
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#include <dm.h>
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#include <dm/device-internal.h>
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#include <dm/uclass-internal.h>
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static int bootdev_check_state(struct bootstd_priv **stdp)
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{
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struct bootstd_priv *std;
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int ret;
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ret = bootstd_get_priv(&std);
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if (ret)
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return ret;
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if (!std->cur_bootdev) {
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printf("Please use 'bootdev select' first\n");
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return -ENOENT;
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}
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*stdp = std;
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return 0;
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}
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static int do_bootdev_list(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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bool probe;
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probe = argc >= 2 && !strcmp(argv[1], "-p");
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bootdev_list(probe);
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return 0;
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}
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static int do_bootdev_select(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct bootstd_priv *std;
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struct udevice *dev;
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int ret;
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ret = bootstd_get_priv(&std);
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if (ret)
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return CMD_RET_FAILURE;
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if (argc < 2) {
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std->cur_bootdev = NULL;
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return 0;
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}
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if (bootdev_find_by_any(argv[1], &dev))
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return CMD_RET_FAILURE;
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std->cur_bootdev = dev;
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return 0;
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}
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static int do_bootdev_info(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct bootstd_priv *priv;
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struct bootflow *bflow;
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int ret, i, num_valid;
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struct udevice *dev;
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bool probe;
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probe = argc >= 2 && !strcmp(argv[1], "-p");
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ret = bootdev_check_state(&priv);
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if (ret)
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return CMD_RET_FAILURE;
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dev = priv->cur_bootdev;
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/* Count the number of bootflows, including how many are valid*/
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num_valid = 0;
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for (ret = bootdev_first_bootflow(dev, &bflow), i = 0;
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!ret;
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ret = bootdev_next_bootflow(&bflow), i++)
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num_valid += bflow->state == BOOTFLOWST_READY;
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/*
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* Prove the device, if requested, otherwise assume that there is no
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* error
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*/
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ret = 0;
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if (probe)
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ret = device_probe(dev);
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printf("Name: %s\n", dev->name);
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printf("Sequence: %d\n", dev_seq(dev));
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printf("Status: %s\n", ret ? simple_itoa(ret) : device_active(dev) ?
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"Probed" : "OK");
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printf("Uclass: %s\n", dev_get_uclass_name(dev_get_parent(dev)));
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printf("Bootflows: %d (%d valid)\n", i, num_valid);
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return 0;
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}
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static int do_bootdev_hunt(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct bootstd_priv *priv;
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const char *spec = NULL;
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bool list = false;
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int ret = 0;
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if (argc >= 2) {
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if (!strcmp(argv[1], "-l"))
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list = true;
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else
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spec = argv[1];
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}
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ret = bootstd_get_priv(&priv);
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if (ret)
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return ret;
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if (list) {
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bootdev_list_hunters(priv);
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} else {
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/* TODO: implement hunting */
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}
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return 0;
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}
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#ifdef CONFIG_SYS_LONGHELP
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static char bootdev_help_text[] =
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"list [-p] - list all available bootdevs (-p to probe)\n"
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"bootdev hunt [-l|<spec>] - use hunt drivers to find bootdevs\n"
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"bootdev select <bd> - select a bootdev by name | label | seq\n"
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"bootdev info [-p] - show information about a bootdev (-p to probe)";
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#endif
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U_BOOT_CMD_WITH_SUBCMDS(bootdev, "Boot devices", bootdev_help_text,
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U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootdev_list),
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U_BOOT_SUBCMD_MKENT(hunt, 2, 1, do_bootdev_hunt),
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U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootdev_select),
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U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootdev_info));
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