upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/net/nfs.h

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Masami Komiya <mkomiya@sonare.it> 2004
*/
#ifndef __NFS_H__
#define __NFS_H__
#define SUNRPC_PORT 111
#define PROG_PORTMAP 100000
#define PROG_NFS 100003
#define PROG_MOUNT 100005
#define MSG_CALL 0
#define MSG_REPLY 1
#define PORTMAP_GETPORT 3
#define MOUNT_ADDENTRY 1
#define MOUNT_UMOUNTALL 4
#define NFS_LOOKUP 4
#define NFS_READLINK 5
#define NFS_READ 6
#define NFS3PROC_LOOKUP 3
#define NFS_FHSIZE 32
#define NFS3_FHSIZE 64
#define NFSERR_PERM 1
#define NFSERR_NOENT 2
#define NFSERR_ACCES 13
#define NFSERR_ISDIR 21
#define NFSERR_INVAL 22
/*
* Block size used for NFS read accesses. A RPC reply packet (including all
* headers) must fit within a single Ethernet frame to avoid fragmentation.
* However, if CONFIG_IP_DEFRAG is set, a bigger value could be used. In any
* case, most NFS servers are optimized for a power of 2.
*/
#define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */
/* Values for Accept State flag on RPC answers (See: rfc1831) */
enum rpc_accept_stat {
NFS_RPC_SUCCESS = 0, /* RPC executed successfully */
NFS_RPC_PROG_UNAVAIL = 1, /* remote hasn't exported program */
NFS_RPC_PROG_MISMATCH = 2, /* remote can't support version # */
NFS_RPC_PROC_UNAVAIL = 3, /* program can't support procedure */
NFS_RPC_GARBAGE_ARGS = 4, /* procedure can't decode params */
NFS_RPC_SYSTEM_ERR = 5 /* errors like memory allocation failure */
};
struct rpc_t {
union {
uint8_t data[2048];
struct {
uint32_t id;
uint32_t type;
uint32_t rpcvers;
uint32_t prog;
uint32_t vers;
uint32_t proc;
uint32_t data[1];
} call;
struct {
uint32_t id;
uint32_t type;
uint32_t rstatus;
uint32_t verifier;
uint32_t v2;
uint32_t astatus;
uint32_t data[NFS_READ_SIZE];
} reply;
} u;
} __attribute__((packed));
void nfs_start(void); /* Begin NFS */
/**********************************************************************/
#endif /* __NFS_H__ */