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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Verified Boot for Embedded (VBE) access functions
- *
- * Copyright 2022 Google LLC
- * Written by Simon Glass <sjg@chromium.org>
- */
- #include <common.h>
- #include <bootmeth.h>
- #include <bootstd.h>
- #include <dm.h>
- #include <image.h>
- #include <vbe.h>
- #include <dm/uclass-internal.h>
- /**
- * is_vbe() - Check if a device is a VBE method
- *
- * @dev: Device to check
- * @return true if this is a VBE bootmth device, else false
- */
- static bool is_vbe(struct udevice *dev)
- {
- return !strncmp("vbe", dev->driver->name, 3);
- }
- int vbe_find_next_device(struct udevice **devp)
- {
- for (uclass_find_next_device(devp);
- *devp;
- uclass_find_next_device(devp)) {
- if (is_vbe(*devp))
- return 0;
- }
- return 0;
- }
- int vbe_find_first_device(struct udevice **devp)
- {
- uclass_find_first_device(UCLASS_BOOTMETH, devp);
- if (!*devp || is_vbe(*devp))
- return 0;
- return vbe_find_next_device(devp);
- }
- int vbe_list(void)
- {
- struct bootstd_priv *std;
- struct udevice *dev;
- int ret;
- ret = bootstd_get_priv(&std);
- if (ret)
- return ret;
- printf("%3s %-3s %-15s %-15s %s\n", "#", "Sel", "Device", "Driver",
- "Description");
- printf("%3s %-3s %-15s %-15s %s\n", "---", "---", "--------------",
- "--------------", "-----------");
- for (ret = vbe_find_first_device(&dev); dev;
- ret = vbe_find_next_device(&dev)) {
- const struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
- printf("%3d %-3s %-15s %-15s %s\n", dev_seq(dev),
- std->vbe_bootmeth == dev ? "*" : "", dev->name,
- dev->driver->name, plat->desc);
- }
- printf("%3s %-3s %-15s %-15s %s\n", "---", "---", "--------------",
- "--------------", "-----------");
- return 0;
- }
- int vbe_select(struct udevice *dev)
- {
- struct bootstd_priv *std;
- int ret;
- ret = bootstd_get_priv(&std);
- if (ret)
- return ret;
- std->vbe_bootmeth = dev;
- return 0;
- }
- int vbe_find_by_any(const char *name, struct udevice **devp)
- {
- struct udevice *dev;
- int ret, seq;
- char *endp;
- seq = simple_strtol(name, &endp, 16);
- /* Select by name */
- if (*endp) {
- ret = uclass_get_device_by_name(UCLASS_BOOTMETH, name, &dev);
- if (ret) {
- printf("Cannot probe VBE bootmeth '%s' (err=%d)\n", name,
- ret);
- return ret;
- }
- /* select by number */
- } else {
- ret = uclass_get_device_by_seq(UCLASS_BOOTMETH, seq, &dev);
- if (ret) {
- printf("Cannot find '%s' (err=%d)\n", name, ret);
- return ret;
- }
- }
- *devp = dev;
- return 0;
- }
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