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efi_loader: device path for virtio block devices

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The UEFI specification does not define a device sub-type for virtio.
Let's use a vendor hardware node here.

This avoids creation of two handles with the same device path indicating
our root node.

Reported-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-05-20 22:39:35 +02:00
parent c067cef695
commit 19ecced71c
2 changed files with 34 additions and 0 deletions
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4
include/efi_loader.h
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@ -45,6 +45,10 @@ static inline void *guidcpy(void *dst, const void *src)
#define U_BOOT_HOST_DEV_GUID \
EFI_GUID(0xbbe4e671, 0x5773, 0x4ea1, \
0x9a, 0xab, 0x3a, 0x7d, 0xbf, 0x40, 0xc4, 0x82)
/* GUID used as root for virtio devices */
#define U_BOOT_VIRTIO_DEV_GUID \
EFI_GUID(0x63293792, 0xadf5, 0x9325, \
0xb9, 0x9f, 0x4e, 0x0e, 0x45, 0x5c, 0x1b, 0x1e)
/* Use internal device tree when starting UEFI application */
#define EFI_FDT_USE_INTERNAL NULL