mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-09 04:43:29 +00:00
ca9d9263e5
uclass_get_device_by_name() is meant to return 0 or a negative error code. simple_itoa() cannot handle negative numbers. This leads to output like: => bootdev list -p Seq Probed Status Uclass Name --- ------ ------ -------- ------------------ c [ ] 18446744073709551614 spi_flash spi.bin@0.bootdev Convert the status to a positive number. Now we get Seq Probed Status Uclass Name --- ------ ------ -------- ------------------ c [ ] 2 spi_flash spi.bin@0.bootdev Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
895 lines
21 KiB
C
895 lines
21 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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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 <dm.h>
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#include <bootdev.h>
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#include <bootflow.h>
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#include <bootmeth.h>
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#include <bootstd.h>
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#include <fs.h>
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#include <log.h>
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#include <malloc.h>
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#include <part.h>
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#include <sort.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <dm/uclass-internal.h>
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enum {
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/*
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* Set some sort of limit on the number of partitions a bootdev can
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* have. Note that for disks this limits the partitions numbers that
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* are scanned to 1..MAX_BOOTFLOWS_PER_BOOTDEV
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*/
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MAX_PART_PER_BOOTDEV = 30,
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/* Maximum supported length of the "boot_targets" env string */
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BOOT_TARGETS_MAX_LEN = 100,
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};
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int bootdev_add_bootflow(struct bootflow *bflow)
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{
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struct bootstd_priv *std;
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struct bootflow *new;
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int ret;
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assert(bflow->dev);
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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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new = malloc(sizeof(*bflow));
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if (!new)
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return log_msg_ret("bflow", -ENOMEM);
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memcpy(new, bflow, sizeof(*bflow));
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list_add_tail(&new->glob_node, &std->glob_head);
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if (bflow->dev) {
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struct bootdev_uc_plat *ucp = dev_get_uclass_plat(bflow->dev);
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list_add_tail(&new->bm_node, &ucp->bootflow_head);
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}
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return 0;
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}
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int bootdev_first_bootflow(struct udevice *dev, struct bootflow **bflowp)
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{
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struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
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if (list_empty(&ucp->bootflow_head))
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return -ENOENT;
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*bflowp = list_first_entry(&ucp->bootflow_head, struct bootflow,
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bm_node);
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return 0;
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}
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int bootdev_next_bootflow(struct bootflow **bflowp)
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{
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struct bootflow *bflow = *bflowp;
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struct bootdev_uc_plat *ucp = dev_get_uclass_plat(bflow->dev);
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*bflowp = NULL;
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if (list_is_last(&bflow->bm_node, &ucp->bootflow_head))
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return -ENOENT;
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*bflowp = list_entry(bflow->bm_node.next, struct bootflow, bm_node);
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return 0;
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}
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int bootdev_bind(struct udevice *parent, const char *drv_name, const char *name,
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struct udevice **devp)
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{
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struct udevice *dev;
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char dev_name[30];
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char *str;
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int ret;
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snprintf(dev_name, sizeof(dev_name), "%s.%s", parent->name, name);
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str = strdup(dev_name);
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if (!str)
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return -ENOMEM;
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ret = device_bind_driver(parent, drv_name, str, &dev);
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if (ret)
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return ret;
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device_set_name_alloced(dev);
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*devp = dev;
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return 0;
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}
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int bootdev_find_in_blk(struct udevice *dev, struct udevice *blk,
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struct bootflow_iter *iter, struct bootflow *bflow)
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{
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struct blk_desc *desc = dev_get_uclass_plat(blk);
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struct disk_partition info;
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char partstr[20];
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char name[60];
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int ret;
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/* Sanity check */
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if (iter->part >= MAX_PART_PER_BOOTDEV)
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return log_msg_ret("max", -ESHUTDOWN);
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bflow->blk = blk;
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if (iter->part)
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snprintf(partstr, sizeof(partstr), "part_%x", iter->part);
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else
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strcpy(partstr, "whole");
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snprintf(name, sizeof(name), "%s.%s", dev->name, partstr);
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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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bflow->part = iter->part;
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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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* partition numbers start at 0 so this cannot succeed, but it can tell
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* us whether there is valid media there
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*/
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ret = part_get_info(desc, iter->part, &info);
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if (!iter->part && ret == -ENOENT)
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ret = 0;
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/*
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* This error indicates the media is not present. Otherwise we just
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* blindly scan the next partition. We could be more intelligent here
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* and check which partition numbers actually exist.
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*/
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if (ret == -EOPNOTSUPP)
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ret = -ESHUTDOWN;
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else
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bflow->state = BOOTFLOWST_MEDIA;
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if (ret) {
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/* allow partition 1 to be missing */
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if (iter->part == 1) {
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iter->max_part = 3;
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ret = -ENOENT;
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}
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return log_msg_ret("part", ret);
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}
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/*
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* Currently we don't get the number of partitions, so just
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* assume a large number
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*/
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iter->max_part = MAX_PART_PER_BOOTDEV;
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/* If this is the whole disk, check if we have bootable partitions */
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if (!iter->part) {
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iter->first_bootable = part_get_bootable(desc);
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log_debug("checking bootable=%d\n", iter->first_bootable);
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/* if there are bootable partitions, scan only those */
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} else if (iter->first_bootable ? !info.bootable : iter->part != 1) {
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return log_msg_ret("boot", -EINVAL);
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} else {
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ret = fs_set_blk_dev_with_part(desc, bflow->part);
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bflow->state = BOOTFLOWST_PART;
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if (ret)
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return log_msg_ret("fs", ret);
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/* Use an #ifdef due to info.sys_ind */
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#ifdef CONFIG_DOS_PARTITION
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log_debug("%s: Found partition %x type %x fstype %d\n",
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blk->name, bflow->part, info.sys_ind,
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ret ? -1 : fs_get_type());
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#endif
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bflow->blk = blk;
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bflow->state = BOOTFLOWST_FS;
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}
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ret = bootmeth_read_bootflow(bflow->method, bflow);
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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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void bootdev_list(bool probe)
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{
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struct udevice *dev;
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int ret;
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int i;
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printf("Seq Probed Status Uclass Name\n");
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printf("--- ------ ------ -------- ------------------\n");
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if (probe)
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ret = uclass_first_device_check(UCLASS_BOOTDEV, &dev);
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else
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ret = uclass_find_first_device(UCLASS_BOOTDEV, &dev);
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for (i = 0; dev; i++) {
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printf("%3x [ %c ] %6s %-9.9s %s\n", dev_seq(dev),
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device_active(dev) ? '+' : ' ',
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ret ? simple_itoa(-ret) : "OK",
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dev_get_uclass_name(dev_get_parent(dev)), dev->name);
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if (probe)
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ret = uclass_next_device_check(&dev);
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else
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ret = uclass_find_next_device(&dev);
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}
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printf("--- ------ ------ -------- ------------------\n");
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printf("(%d bootdev%s)\n", i, i != 1 ? "s" : "");
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}
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int bootdev_setup_for_dev(struct udevice *parent, const char *drv_name)
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{
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struct udevice *bdev;
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int ret;
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ret = device_find_first_child_by_uclass(parent, UCLASS_BOOTDEV,
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&bdev);
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if (ret) {
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if (ret != -ENODEV) {
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log_debug("Cannot access bootdev device\n");
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return ret;
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}
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ret = bootdev_bind(parent, drv_name, "bootdev", &bdev);
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if (ret) {
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log_debug("Cannot create bootdev device\n");
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return ret;
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}
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}
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return 0;
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}
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static int bootdev_get_suffix_start(struct udevice *dev, const char *suffix)
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{
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int len, slen;
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len = strlen(dev->name);
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slen = strlen(suffix);
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if (len > slen && !strcmp(suffix, dev->name + len - slen))
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return len - slen;
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return len;
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}
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int bootdev_setup_sibling_blk(struct udevice *blk, const char *drv_name)
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{
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struct udevice *parent, *dev;
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char dev_name[50];
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int ret, len;
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len = bootdev_get_suffix_start(blk, ".blk");
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snprintf(dev_name, sizeof(dev_name), "%.*s.%s", len, blk->name,
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"bootdev");
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parent = dev_get_parent(blk);
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ret = device_find_child_by_name(parent, dev_name, &dev);
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if (ret) {
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char *str;
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if (ret != -ENODEV) {
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log_debug("Cannot access bootdev device\n");
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return ret;
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}
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str = strdup(dev_name);
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if (!str)
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return -ENOMEM;
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ret = device_bind_driver(parent, drv_name, str, &dev);
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if (ret) {
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log_debug("Cannot create bootdev device\n");
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return ret;
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}
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device_set_name_alloced(dev);
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}
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return 0;
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}
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int bootdev_get_sibling_blk(struct udevice *dev, struct udevice **blkp)
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{
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struct udevice *parent = dev_get_parent(dev);
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struct udevice *blk;
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int ret, len;
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if (device_get_uclass_id(dev) != UCLASS_BOOTDEV)
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return -EINVAL;
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/* This should always work if bootdev_setup_sibling_blk() was used */
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len = bootdev_get_suffix_start(dev, ".bootdev");
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ret = device_find_child_by_namelen(parent, dev->name, len, &blk);
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if (ret) {
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char dev_name[50];
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snprintf(dev_name, sizeof(dev_name), "%.*s.blk", len,
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dev->name);
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ret = device_find_child_by_name(parent, dev_name, &blk);
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if (ret)
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return log_msg_ret("find", ret);
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}
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ret = device_probe(blk);
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if (ret)
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return log_msg_ret("act", ret);
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*blkp = blk;
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return 0;
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}
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static int bootdev_get_from_blk(struct udevice *blk, struct udevice **bootdevp)
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{
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struct udevice *parent = dev_get_parent(blk);
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struct udevice *bootdev;
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char dev_name[50];
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int ret, len;
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if (device_get_uclass_id(blk) != UCLASS_BLK)
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return -EINVAL;
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/* This should always work if bootdev_setup_sibling_blk() was used */
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len = bootdev_get_suffix_start(blk, ".blk");
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snprintf(dev_name, sizeof(dev_name), "%.*s.%s", len, blk->name,
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"bootdev");
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ret = device_find_child_by_name(parent, dev_name, &bootdev);
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if (ret)
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return log_msg_ret("find", ret);
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*bootdevp = bootdev;
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return 0;
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}
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int bootdev_unbind_dev(struct udevice *parent)
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{
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struct udevice *dev;
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int ret;
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ret = device_find_first_child_by_uclass(parent, UCLASS_BOOTDEV, &dev);
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if (!ret) {
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ret = device_remove(dev, DM_REMOVE_NORMAL);
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if (ret)
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return log_msg_ret("rem", ret);
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ret = device_unbind(dev);
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if (ret)
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return log_msg_ret("unb", ret);
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}
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return 0;
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}
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/**
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* label_to_uclass() - Convert a label to a uclass and sequence number
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*
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* @label: Label to look up (e.g. "mmc1" or "mmc0")
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* @seqp: Returns the sequence number, or -1 if none
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* @method_flagsp: If non-NULL, returns any flags implied by the label
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* (enum bootflow_meth_flags_t), 0 if none
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* Returns: sequence number on success, -EPFNOSUPPORT is the uclass is not
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* known, other -ve error code on other error
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*/
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static int label_to_uclass(const char *label, int *seqp, int *method_flagsp)
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{
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int seq, len, method_flags;
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enum uclass_id id;
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const char *end;
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method_flags = 0;
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seq = trailing_strtoln_end(label, NULL, &end);
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len = end - label;
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if (!len)
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return -EINVAL;
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id = uclass_get_by_namelen(label, len);
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log_debug("find %s: seq=%d, id=%d/%s\n", label, seq, id,
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uclass_get_name(id));
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if (id == UCLASS_INVALID) {
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/* try some special cases */
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if (IS_ENABLED(CONFIG_BOOTDEV_SPI_FLASH) &&
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!strncmp("spi", label, len)) {
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id = UCLASS_SPI_FLASH;
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} else if (IS_ENABLED(CONFIG_BOOTDEV_ETH) &&
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!strncmp("pxe", label, len)) {
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id = UCLASS_ETH;
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method_flags |= BOOTFLOW_METHF_PXE_ONLY;
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} else if (IS_ENABLED(CONFIG_BOOTDEV_ETH) &&
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!strncmp("dhcp", label, len)) {
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id = UCLASS_ETH;
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method_flags |= BOOTFLOW_METHF_DHCP_ONLY;
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} else {
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return -EPFNOSUPPORT;
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}
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}
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if (id == UCLASS_USB)
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id = UCLASS_MASS_STORAGE;
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*seqp = seq;
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if (method_flagsp)
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*method_flagsp = method_flags;
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return id;
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}
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int bootdev_find_by_label(const char *label, struct udevice **devp,
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int *method_flagsp)
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{
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int seq, ret, method_flags = 0;
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struct udevice *media;
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struct uclass *uc;
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enum uclass_id id;
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ret = label_to_uclass(label, &seq, &method_flags);
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if (ret < 0)
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return log_msg_ret("uc", ret);
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id = ret;
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/* Iterate through devices in the media uclass (e.g. UCLASS_MMC) */
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uclass_id_foreach_dev(id, media, uc) {
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struct udevice *bdev, *blk;
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int ret;
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/* if there is no seq, match anything */
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if (seq != -1 && dev_seq(media) != seq) {
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log_debug("- skip, media seq=%d\n", dev_seq(media));
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continue;
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}
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ret = device_find_first_child_by_uclass(media, UCLASS_BOOTDEV,
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&bdev);
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if (ret) {
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log_debug("- looking via blk, seq=%d, id=%d\n", seq,
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id);
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ret = blk_find_device(id, seq, &blk);
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if (!ret) {
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log_debug("- get from blk %s\n", blk->name);
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ret = bootdev_get_from_blk(blk, &bdev);
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}
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}
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if (!ret) {
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log_debug("- found %s\n", bdev->name);
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*devp = bdev;
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/*
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* if no sequence number was provided, we must scan all
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* bootdevs for this media uclass
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*/
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if (IS_ENABLED(CONFIG_BOOTSTD_FULL) && seq == -1)
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method_flags |= BOOTFLOW_METHF_SINGLE_UCLASS;
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if (method_flagsp)
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*method_flagsp = method_flags;
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return 0;
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}
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log_debug("- no device in %s\n", media->name);
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}
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return -ENOENT;
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}
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int bootdev_find_by_any(const char *name, struct udevice **devp,
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int *method_flagsp)
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{
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struct udevice *dev;
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int method_flags = 0;
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int ret = -ENODEV, seq;
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char *endp;
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seq = simple_strtol(name, &endp, 16);
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/* Select by name, label or number */
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if (*endp) {
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ret = uclass_get_device_by_name(UCLASS_BOOTDEV, name, &dev);
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if (ret == -ENODEV) {
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ret = bootdev_find_by_label(name, &dev, &method_flags);
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if (ret) {
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printf("Cannot find bootdev '%s' (err=%d)\n",
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name, ret);
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return log_msg_ret("lab", ret);
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}
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ret = device_probe(dev);
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}
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if (ret) {
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printf("Cannot probe bootdev '%s' (err=%d)\n", name,
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ret);
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return log_msg_ret("pro", ret);
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}
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} else if (IS_ENABLED(CONFIG_BOOTSTD_FULL)) {
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ret = uclass_get_device_by_seq(UCLASS_BOOTDEV, seq, &dev);
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method_flags |= BOOTFLOW_METHF_SINGLE_DEV;
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}
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if (ret) {
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|
printf("Cannot find '%s' (err=%d)\n", name, ret);
|
|
return ret;
|
|
}
|
|
|
|
*devp = dev;
|
|
if (method_flagsp)
|
|
*method_flagsp = method_flags;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootdev_hunt_and_find_by_label(const char *label, struct udevice **devp,
|
|
int *method_flagsp)
|
|
{
|
|
int ret;
|
|
|
|
ret = bootdev_hunt(label, false);
|
|
if (ret)
|
|
return log_msg_ret("scn", ret);
|
|
ret = bootdev_find_by_label(label, devp, method_flagsp);
|
|
if (ret)
|
|
return log_msg_ret("fnd", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int default_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
|
|
struct bootflow *bflow)
|
|
{
|
|
struct udevice *blk;
|
|
int ret;
|
|
|
|
ret = bootdev_get_sibling_blk(dev, &blk);
|
|
/*
|
|
* If there is no media, indicate that no more partitions should be
|
|
* checked
|
|
*/
|
|
if (ret == -EOPNOTSUPP)
|
|
ret = -ESHUTDOWN;
|
|
if (ret)
|
|
return log_msg_ret("blk", ret);
|
|
assert(blk);
|
|
ret = bootdev_find_in_blk(dev, blk, iter, bflow);
|
|
if (ret)
|
|
return log_msg_ret("find", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootdev_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
|
|
struct bootflow *bflow)
|
|
{
|
|
const struct bootdev_ops *ops = bootdev_get_ops(dev);
|
|
|
|
log_debug("->get_bootflow %s=%p\n", dev->name, ops->get_bootflow);
|
|
bootflow_init(bflow, dev, iter->method);
|
|
if (!ops->get_bootflow)
|
|
return default_get_bootflow(dev, iter, bflow);
|
|
|
|
return ops->get_bootflow(dev, iter, bflow);
|
|
}
|
|
|
|
void bootdev_clear_bootflows(struct udevice *dev)
|
|
{
|
|
struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
|
|
|
|
while (!list_empty(&ucp->bootflow_head)) {
|
|
struct bootflow *bflow;
|
|
|
|
bflow = list_first_entry(&ucp->bootflow_head, struct bootflow,
|
|
bm_node);
|
|
bootflow_remove(bflow);
|
|
}
|
|
}
|
|
|
|
int bootdev_next_label(struct bootflow_iter *iter, struct udevice **devp,
|
|
int *method_flagsp)
|
|
{
|
|
struct udevice *dev;
|
|
|
|
log_debug("next\n");
|
|
for (dev = NULL; !dev && iter->labels[++iter->cur_label];) {
|
|
const char *label = iter->labels[iter->cur_label];
|
|
int ret;
|
|
|
|
log_debug("Scanning: %s\n", label);
|
|
ret = bootdev_hunt_and_find_by_label(label, &dev,
|
|
method_flagsp);
|
|
if (iter->flags & BOOTFLOWIF_SHOW) {
|
|
if (ret == -EPFNOSUPPORT) {
|
|
log_warning("Unknown uclass '%s' in label\n",
|
|
label);
|
|
} else if (ret == -ENOENT) {
|
|
/*
|
|
* looking for, e.g. 'scsi0' should find
|
|
* something if SCSI is present
|
|
*/
|
|
if (!trailing_strtol(label)) {
|
|
log_warning("No bootdevs for '%s'\n",
|
|
label);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if (!dev)
|
|
return log_msg_ret("fin", -ENODEV);
|
|
*devp = dev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootdev_next_prio(struct bootflow_iter *iter, struct udevice **devp)
|
|
{
|
|
struct udevice *dev = *devp;
|
|
bool found;
|
|
int ret;
|
|
|
|
/* find the next device with this priority */
|
|
*devp = NULL;
|
|
log_debug("next prio %d: dev=%p/%s\n", iter->cur_prio, dev,
|
|
dev ? dev->name : "none");
|
|
do {
|
|
/*
|
|
* Don't probe devices here since they may not be of the
|
|
* required priority
|
|
*/
|
|
if (!dev)
|
|
uclass_find_first_device(UCLASS_BOOTDEV, &dev);
|
|
else
|
|
uclass_find_next_device(&dev);
|
|
found = false;
|
|
|
|
/* scan for the next device with the correct priority */
|
|
while (dev) {
|
|
struct bootdev_uc_plat *plat;
|
|
|
|
plat = dev_get_uclass_plat(dev);
|
|
log_debug("- %s: %d, want %d\n", dev->name, plat->prio,
|
|
iter->cur_prio);
|
|
if (plat->prio == iter->cur_prio)
|
|
break;
|
|
uclass_find_next_device(&dev);
|
|
}
|
|
|
|
/* none found for this priority, so move to the next */
|
|
if (!dev) {
|
|
log_debug("None found at prio %d, moving to %d\n",
|
|
iter->cur_prio, iter->cur_prio + 1);
|
|
if (++iter->cur_prio == BOOTDEVP_COUNT)
|
|
return log_msg_ret("fin", -ENODEV);
|
|
|
|
if (iter->flags & BOOTFLOWIF_HUNT) {
|
|
/* hunt to find new bootdevs */
|
|
ret = bootdev_hunt_prio(iter->cur_prio,
|
|
iter->flags &
|
|
BOOTFLOWIF_SHOW);
|
|
log_debug("- hunt ret %d\n", ret);
|
|
if (ret)
|
|
return log_msg_ret("hun", ret);
|
|
}
|
|
} else {
|
|
ret = device_probe(dev);
|
|
if (ret) {
|
|
log_debug("Device '%s' failed to probe\n",
|
|
dev->name);
|
|
dev = NULL;
|
|
}
|
|
}
|
|
} while (!dev);
|
|
|
|
*devp = dev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootdev_setup_iter(struct bootflow_iter *iter, const char *label,
|
|
struct udevice **devp, int *method_flagsp)
|
|
{
|
|
struct udevice *bootstd, *dev = NULL;
|
|
bool show = iter->flags & BOOTFLOWIF_SHOW;
|
|
int method_flags;
|
|
int ret;
|
|
|
|
ret = uclass_first_device_err(UCLASS_BOOTSTD, &bootstd);
|
|
if (ret) {
|
|
log_err("Missing bootstd device\n");
|
|
return log_msg_ret("std", ret);
|
|
}
|
|
|
|
/* hunt for any pre-scan devices */
|
|
if (iter->flags & BOOTFLOWIF_HUNT) {
|
|
ret = bootdev_hunt_prio(BOOTDEVP_1_PRE_SCAN, show);
|
|
if (ret)
|
|
return log_msg_ret("pre", ret);
|
|
}
|
|
|
|
/* Handle scanning a single device */
|
|
if (IS_ENABLED(CONFIG_BOOTSTD_FULL) && label) {
|
|
if (iter->flags & BOOTFLOWIF_HUNT) {
|
|
ret = bootdev_hunt(label, show);
|
|
if (ret)
|
|
return log_msg_ret("hun", ret);
|
|
}
|
|
ret = bootdev_find_by_any(label, &dev, &method_flags);
|
|
if (ret)
|
|
return log_msg_ret("lab", ret);
|
|
|
|
log_debug("method_flags: %x\n", method_flags);
|
|
if (method_flags & BOOTFLOW_METHF_SINGLE_UCLASS)
|
|
iter->flags |= BOOTFLOWIF_SINGLE_UCLASS;
|
|
else if (method_flags & BOOTFLOW_METHF_SINGLE_DEV)
|
|
iter->flags |= BOOTFLOWIF_SINGLE_DEV;
|
|
else
|
|
iter->flags |= BOOTFLOWIF_SINGLE_MEDIA;
|
|
log_debug("Selected label: %s, flags %x\n", label, iter->flags);
|
|
} else {
|
|
bool ok;
|
|
|
|
/* This either returns a non-empty list or NULL */
|
|
iter->labels = bootstd_get_bootdev_order(bootstd, &ok);
|
|
if (!ok)
|
|
return log_msg_ret("ord", -ENOMEM);
|
|
log_debug("setup labels %p\n", iter->labels);
|
|
if (iter->labels) {
|
|
iter->cur_label = -1;
|
|
ret = bootdev_next_label(iter, &dev, &method_flags);
|
|
} else {
|
|
ret = bootdev_next_prio(iter, &dev);
|
|
method_flags = 0;
|
|
}
|
|
if (!dev)
|
|
return log_msg_ret("fin", -ENOENT);
|
|
log_debug("Selected bootdev: %s\n", dev->name);
|
|
}
|
|
|
|
ret = device_probe(dev);
|
|
if (ret)
|
|
return log_msg_ret("probe", ret);
|
|
if (method_flagsp)
|
|
*method_flagsp = method_flags;
|
|
*devp = dev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bootdev_hunt_drv(struct bootdev_hunter *info, uint seq, bool show)
|
|
{
|
|
const char *name = uclass_get_name(info->uclass);
|
|
struct bootstd_priv *std;
|
|
int ret;
|
|
|
|
ret = bootstd_get_priv(&std);
|
|
if (ret)
|
|
return log_msg_ret("std", ret);
|
|
|
|
if (!(std->hunters_used & BIT(seq))) {
|
|
if (show)
|
|
printf("Hunting with: %s\n",
|
|
uclass_get_name(info->uclass));
|
|
log_debug("Hunting with: %s\n", name);
|
|
if (info->hunt) {
|
|
ret = info->hunt(info, show);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
std->hunters_used |= BIT(seq);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootdev_hunt(const char *spec, bool show)
|
|
{
|
|
struct bootdev_hunter *start;
|
|
const char *end;
|
|
int n_ent, i;
|
|
int result;
|
|
size_t len;
|
|
|
|
start = ll_entry_start(struct bootdev_hunter, bootdev_hunter);
|
|
n_ent = ll_entry_count(struct bootdev_hunter, bootdev_hunter);
|
|
result = 0;
|
|
|
|
len = SIZE_MAX;
|
|
if (spec) {
|
|
trailing_strtoln_end(spec, NULL, &end);
|
|
len = end - spec;
|
|
}
|
|
|
|
for (i = 0; i < n_ent; i++) {
|
|
struct bootdev_hunter *info = start + i;
|
|
const char *name = uclass_get_name(info->uclass);
|
|
int ret;
|
|
|
|
log_debug("looking at %.*s for %s\n",
|
|
(int)max(strlen(name), len), spec, name);
|
|
if (spec && strncmp(spec, name, max(strlen(name), len))) {
|
|
if (info->uclass != UCLASS_ETH ||
|
|
(strcmp("dhcp", spec) && strcmp("pxe", spec)))
|
|
continue;
|
|
}
|
|
ret = bootdev_hunt_drv(info, i, show);
|
|
if (ret)
|
|
result = ret;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int bootdev_hunt_prio(enum bootdev_prio_t prio, bool show)
|
|
{
|
|
struct bootdev_hunter *start;
|
|
int n_ent, i;
|
|
int result;
|
|
|
|
start = ll_entry_start(struct bootdev_hunter, bootdev_hunter);
|
|
n_ent = ll_entry_count(struct bootdev_hunter, bootdev_hunter);
|
|
result = 0;
|
|
|
|
log_debug("Hunting for priority %d\n", prio);
|
|
for (i = 0; i < n_ent; i++) {
|
|
struct bootdev_hunter *info = start + i;
|
|
int ret;
|
|
|
|
if (prio != info->prio)
|
|
continue;
|
|
ret = bootdev_hunt_drv(info, i, show);
|
|
if (ret && ret != -ENOENT)
|
|
result = ret;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void bootdev_list_hunters(struct bootstd_priv *std)
|
|
{
|
|
struct bootdev_hunter *orig, *start;
|
|
int n_ent, i;
|
|
|
|
orig = ll_entry_start(struct bootdev_hunter, bootdev_hunter);
|
|
n_ent = ll_entry_count(struct bootdev_hunter, bootdev_hunter);
|
|
|
|
/*
|
|
* workaround for strange bug in clang-12 which sees all the below data
|
|
* as zeroes. Any access of start seems to fix it, such as
|
|
*
|
|
* printf("%p", start);
|
|
*
|
|
* Use memcpy() to force the correct behaviour.
|
|
*/
|
|
memcpy(&start, &orig, sizeof(orig));
|
|
printf("%4s %4s %-15s %s\n", "Prio", "Used", "Uclass", "Hunter");
|
|
printf("%4s %4s %-15s %s\n", "----", "----", "---------------", "---------------");
|
|
for (i = 0; i < n_ent; i++) {
|
|
struct bootdev_hunter *info = start + i;
|
|
|
|
printf("%4d %4s %-15s %s\n", info->prio,
|
|
std->hunters_used & BIT(i) ? "*" : "",
|
|
uclass_get_name(info->uclass),
|
|
info->drv ? info->drv->name : "(none)");
|
|
}
|
|
|
|
printf("(total hunters: %d)\n", n_ent);
|
|
}
|
|
|
|
static int bootdev_post_bind(struct udevice *dev)
|
|
{
|
|
struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
|
|
|
|
INIT_LIST_HEAD(&ucp->bootflow_head);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bootdev_pre_unbind(struct udevice *dev)
|
|
{
|
|
bootdev_clear_bootflows(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(bootdev) = {
|
|
.id = UCLASS_BOOTDEV,
|
|
.name = "bootdev",
|
|
.flags = DM_UC_FLAG_SEQ_ALIAS,
|
|
.per_device_plat_auto = sizeof(struct bootdev_uc_plat),
|
|
.post_bind = bootdev_post_bind,
|
|
.pre_unbind = bootdev_pre_unbind,
|
|
};
|