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diff --git a/qemu/roms/ipxe/src/arch/i386/include/ipxe/errno/pcbios.h b/qemu/roms/ipxe/src/arch/i386/include/ipxe/errno/pcbios.h
new file mode 100644
index 000000000..3a9eb2495
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/i386/include/ipxe/errno/pcbios.h
@@ -0,0 +1,115 @@
+#ifndef _IPXE_ERRNO_PCBIOS_H
+#define _IPXE_ERRNO_PCBIOS_H
+
+/**
+ * @file
+ *
+ * PC-BIOS platform error codes
+ *
+ * We use the PXE-specified error codes as the platform error codes
+ * for the PC-BIOS platform.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <pxe_error.h>
+
+/**
+ * Convert platform error code to platform component of iPXE error code
+ *
+ * @v platform		Platform error code
+ * @ret errno		Platform component of iPXE error code
+ */
+#define PLATFORM_TO_ERRNO( platform ) ( (platform) & 0xff )
+
+/**
+ * Convert iPXE error code to platform error code
+ *
+ * @v errno		iPXE error code
+ * @ret platform	Platform error code
+ */
+#define ERRNO_TO_PLATFORM( errno ) ( (errno) & 0xff )
+
+/* Platform-specific error codes */
+#define PLATFORM_ENOERR		PXENV_STATUS_SUCCESS
+#define PLATFORM_E2BIG		PXENV_STATUS_BAD_FUNC
+#define PLATFORM_EACCES		PXENV_STATUS_TFTP_ACCESS_VIOLATION
+#define PLATFORM_EADDRINUSE	PXENV_STATUS_UDP_OPEN
+#define PLATFORM_EADDRNOTAVAIL	PXENV_STATUS_UDP_OPEN
+#define PLATFORM_EAFNOSUPPORT	PXENV_STATUS_UNSUPPORTED
+#define PLATFORM_EAGAIN		PXENV_STATUS_FAILURE
+#define PLATFORM_EALREADY	PXENV_STATUS_UDP_OPEN
+#define PLATFORM_EBADF		PXENV_STATUS_TFTP_CLOSED
+#define PLATFORM_EBADMSG	PXENV_STATUS_FAILURE
+#define PLATFORM_EBUSY		PXENV_STATUS_OUT_OF_RESOURCES
+#define PLATFORM_ECANCELED	PXENV_STATUS_BINL_CANCELED_BY_KEYSTROKE
+#define PLATFORM_ECHILD		PXENV_STATUS_TFTP_FILE_NOT_FOUND
+#define PLATFORM_ECONNABORTED	PXENV_STATUS_TFTP_CANNOT_READ_FROM_CONNECTION
+#define PLATFORM_ECONNREFUSED	PXENV_STATUS_TFTP_CANNOT_OPEN_CONNECTION
+#define PLATFORM_ECONNRESET	PXENV_STATUS_TFTP_CANNOT_READ_FROM_CONNECTION
+#define PLATFORM_EDEADLK	PXENV_STATUS_FAILURE
+#define PLATFORM_EDESTADDRREQ	PXENV_STATUS_BAD_FUNC
+#define PLATFORM_EDOM		PXENV_STATUS_FAILURE
+#define PLATFORM_EDQUOT		PXENV_STATUS_FAILURE
+#define PLATFORM_EEXIST		PXENV_STATUS_FAILURE
+#define PLATFORM_EFAULT		PXENV_STATUS_MCOPY_PROBLEM
+#define PLATFORM_EFBIG		PXENV_STATUS_MCOPY_PROBLEM
+#define PLATFORM_EHOSTUNREACH	PXENV_STATUS_ARP_TIMEOUT
+#define PLATFORM_EIDRM		PXENV_STATUS_FAILURE
+#define PLATFORM_EILSEQ		PXENV_STATUS_FAILURE
+#define PLATFORM_EINPROGRESS	PXENV_STATUS_FAILURE
+#define PLATFORM_EINTR		PXENV_STATUS_FAILURE
+#define PLATFORM_EINVAL		PXENV_STATUS_BAD_FUNC
+#define PLATFORM_EIO		PXENV_STATUS_TFTP_CANNOT_READ_FROM_CONNECTION
+#define PLATFORM_EISCONN	PXENV_STATUS_UDP_OPEN
+#define PLATFORM_EISDIR		PXENV_STATUS_FAILURE
+#define PLATFORM_ELOOP		PXENV_STATUS_FAILURE
+#define PLATFORM_EMFILE		PXENV_STATUS_OUT_OF_RESOURCES
+#define PLATFORM_EMLINK		PXENV_STATUS_FAILURE
+#define PLATFORM_EMSGSIZE	PXENV_STATUS_BAD_FUNC
+#define PLATFORM_EMULTIHOP	PXENV_STATUS_FAILURE
+#define PLATFORM_ENAMETOOLONG	PXENV_STATUS_FAILURE
+#define PLATFORM_ENETDOWN	PXENV_STATUS_ARP_TIMEOUT
+#define PLATFORM_ENETRESET	PXENV_STATUS_FAILURE
+#define PLATFORM_ENETUNREACH	PXENV_STATUS_ARP_TIMEOUT
+#define PLATFORM_ENFILE		PXENV_STATUS_OUT_OF_RESOURCES
+#define PLATFORM_ENOBUFS	PXENV_STATUS_OUT_OF_RESOURCES
+#define PLATFORM_ENODATA	PXENV_STATUS_FAILURE
+#define PLATFORM_ENODEV		PXENV_STATUS_TFTP_FILE_NOT_FOUND
+#define PLATFORM_ENOENT		PXENV_STATUS_TFTP_FILE_NOT_FOUND
+#define PLATFORM_ENOEXEC	PXENV_STATUS_FAILURE
+#define PLATFORM_ENOLCK		PXENV_STATUS_FAILURE
+#define PLATFORM_ENOLINK	PXENV_STATUS_FAILURE
+#define PLATFORM_ENOMEM		PXENV_STATUS_OUT_OF_RESOURCES
+#define PLATFORM_ENOMSG		PXENV_STATUS_FAILURE
+#define PLATFORM_ENOPROTOOPT	PXENV_STATUS_UNSUPPORTED
+#define PLATFORM_ENOSPC		PXENV_STATUS_OUT_OF_RESOURCES
+#define PLATFORM_ENOSR		PXENV_STATUS_OUT_OF_RESOURCES
+#define PLATFORM_ENOSTR		PXENV_STATUS_FAILURE
+#define PLATFORM_ENOSYS		PXENV_STATUS_UNSUPPORTED
+#define PLATFORM_ENOTCONN	PXENV_STATUS_FAILURE
+#define PLATFORM_ENOTDIR	PXENV_STATUS_FAILURE
+#define PLATFORM_ENOTEMPTY	PXENV_STATUS_FAILURE
+#define PLATFORM_ENOTSOCK	PXENV_STATUS_FAILURE
+#define PLATFORM_ENOTSUP	PXENV_STATUS_UNSUPPORTED
+#define PLATFORM_ENOTTY		PXENV_STATUS_FAILURE
+#define PLATFORM_ENXIO		PXENV_STATUS_TFTP_FILE_NOT_FOUND
+#define PLATFORM_EOPNOTSUPP	PXENV_STATUS_UNSUPPORTED
+#define PLATFORM_EOVERFLOW	PXENV_STATUS_FAILURE
+#define PLATFORM_EPERM		PXENV_STATUS_TFTP_ACCESS_VIOLATION
+#define PLATFORM_EPIPE		PXENV_STATUS_FAILURE
+#define PLATFORM_EPROTO		PXENV_STATUS_FAILURE
+#define PLATFORM_EPROTONOSUPPORT PXENV_STATUS_UNSUPPORTED
+#define PLATFORM_EPROTOTYPE	PXENV_STATUS_FAILURE
+#define PLATFORM_ERANGE		PXENV_STATUS_FAILURE
+#define PLATFORM_EROFS		PXENV_STATUS_FAILURE
+#define PLATFORM_ESPIPE		PXENV_STATUS_FAILURE
+#define PLATFORM_ESRCH		PXENV_STATUS_TFTP_FILE_NOT_FOUND
+#define PLATFORM_ESTALE		PXENV_STATUS_FAILURE
+#define PLATFORM_ETIME		PXENV_STATUS_FAILURE
+#define PLATFORM_ETIMEDOUT	PXENV_STATUS_TFTP_READ_TIMEOUT
+#define PLATFORM_ETXTBSY	PXENV_STATUS_FAILURE
+#define PLATFORM_EWOULDBLOCK	PXENV_STATUS_TFTP_OPEN
+#define PLATFORM_EXDEV		PXENV_STATUS_FAILURE
+
+#endif /* _IPXE_ERRNO_PCBIOS_H */