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Pull request for efi-2023.04-rc5

Browse Source 
UEFI:
 
 * Create unique device paths for USB devices with the same vendor
   and product id.
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Merge tag 'efi-2023.04-rc5' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for efi-2023.04-rc5

UEFI:

* Create unique device paths for USB devices with the same vendor
  and product id.
This commit is contained in:
Tom Rini 2023-03-25 09:40:19 -04:00
commit 8be7b4629e
3 changed files with 46 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/efi_api.h
View File

@ -570,6 +570,7 @@ struct efi_mac_addr {
#define DEVICE_PATH_TYPE_HARDWARE_DEVICE 0x01
# define DEVICE_PATH_SUB_TYPE_MEMORY 0x03
# define DEVICE_PATH_SUB_TYPE_VENDOR 0x04
# define DEVICE_PATH_SUB_TYPE_CONTROLLER 0x05
struct efi_device_path_memory {
struct efi_device_path dp;
@ -584,6 +585,11 @@ struct efi_device_path_vendor {
u8 vendor_data[];
} __packed;
struct efi_device_path_controller {
struct efi_device_path dp;
u32 controller_number;
} __packed;
#define DEVICE_PATH_TYPE_ACPI_DEVICE 0x02
# define DEVICE_PATH_SUB_TYPE_ACPI_DEVICE 0x01

45
lib/efi_loader/efi_device_path.c
View File

@ -147,7 +147,7 @@ struct efi_device_path *efi_dp_shorten(struct efi_device_path *dp)
* in practice fallback.efi just uses MEDIA:HARD_DRIVE
* so not sure when we would see these other cases.
*/
if (EFI_DP_TYPE(dp, MESSAGING_DEVICE, MSG_USB_CLASS) ||
if (EFI_DP_TYPE(dp, MESSAGING_DEVICE, MSG_USB) ||
EFI_DP_TYPE(dp, MEDIA_DEVICE, HARD_DRIVE_PATH) ||
EFI_DP_TYPE(dp, MEDIA_DEVICE, FILE_PATH))
return dp;
@ -564,6 +564,11 @@ __maybe_unused static unsigned int dp_size(struct udevice *dev)
return dp_size(dev->parent)
+ sizeof(struct efi_device_path_vendor) + 1;
#endif
#ifdef CONFIG_USB
case UCLASS_MASS_STORAGE:
return dp_size(dev->parent)
+ sizeof(struct efi_device_path_controller);
#endif
#ifdef CONFIG_VIRTIO_BLK
case UCLASS_VIRTIO:
/*
@ -585,7 +590,7 @@ __maybe_unused static unsigned int dp_size(struct udevice *dev)
case UCLASS_MASS_STORAGE:
case UCLASS_USB_HUB:
return dp_size(dev->parent) +
sizeof(struct efi_device_path_usb_class);
sizeof(struct efi_device_path_usb);
default:
/* just skip over unknown classes: */
return dp_size(dev->parent);
@ -741,6 +746,19 @@ __maybe_unused static void *dp_fill(void *buf, struct udevice *dev)
memcpy(&dp->ns_id, &ns_id, sizeof(ns_id));
return &dp[1];
}
#endif
#if defined(CONFIG_USB)
case UCLASS_MASS_STORAGE: {
struct blk_desc *desc = desc = dev_get_uclass_plat(dev);
struct efi_device_path_controller *dp =
dp_fill(buf, dev->parent);
dp->dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE;
dp->dp.sub_type = DEVICE_PATH_SUB_TYPE_CONTROLLER;
dp->dp.length = sizeof(*dp);
dp->controller_number = desc->lun;
return &dp[1];
}
#endif
default:
debug("%s(%u) %s: unhandled parent class: %s (%u)\n",
@ -767,19 +785,22 @@ __maybe_unused static void *dp_fill(void *buf, struct udevice *dev)
#endif
case UCLASS_MASS_STORAGE:
case UCLASS_USB_HUB: {
struct efi_device_path_usb_class *udp =
dp_fill(buf, dev->parent);
struct usb_device *udev = dev_get_parent_priv(dev);
struct usb_device_descriptor *desc = &udev->descriptor;
struct efi_device_path_usb *udp = dp_fill(buf, dev->parent);
switch (device_get_uclass_id(dev->parent)) {
case UCLASS_USB_HUB: {
struct usb_device *udev = dev_get_parent_priv(dev);
udp->parent_port_number = udev->portnr;
break;
}
default:
udp->parent_port_number = 0;
}
udp->dp.type = DEVICE_PATH_TYPE_MESSAGING_DEVICE;
udp->dp.sub_type = DEVICE_PATH_SUB_TYPE_MSG_USB_CLASS;
udp->dp.sub_type = DEVICE_PATH_SUB_TYPE_MSG_USB;
udp->dp.length = sizeof(*udp);
udp->vendor_id = desc->idVendor;
udp->product_id = desc->idProduct;
udp->device_class = desc->bDeviceClass;
udp->device_subclass = desc->bDeviceSubClass;
udp->device_protocol = desc->bDeviceProtocol;
udp->usb_interface = 0;
return &udp[1];
}

7
lib/efi_loader/efi_device_path_to_text.c
View File

@ -77,6 +77,13 @@ static char *dp_hardware(char *s, struct efi_device_path *dp)
s += sprintf(s, ")");
break;
}
case DEVICE_PATH_SUB_TYPE_CONTROLLER: {
struct efi_device_path_controller *cdp =
(struct efi_device_path_controller *)dp;
s += sprintf(s, "Ctrl(0x%0x)", cdp->controller_number);
break;
}
default:
s = dp_unknown(s, dp);
break;