From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/net/tftp.c | 931 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 931 insertions(+)
create mode 100644 roms/u-boot/net/tftp.c
(limited to 'roms/u-boot/net/tftp.c')
diff --git a/roms/u-boot/net/tftp.c b/roms/u-boot/net/tftp.c
new file mode 100644
index 000000000..00ab7ca0b
--- /dev/null
+++ b/roms/u-boot/net/tftp.c
@@ -0,0 +1,931 @@
+/*
+ * Copyright 1994, 1995, 2000 Neil Russell.
+ * (See License)
+ * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
+ * Copyright 2011 Comelit Group SpA,
+ * Luca Ceresoli <luca.ceresoli@comelit.it>
+ */
+#include <common.h>
+#include <command.h>
+#include <efi_loader.h>
+#include <env.h>
+#include <image.h>
+#include <lmb.h>
+#include <log.h>
+#include <mapmem.h>
+#include <net.h>
+#include <asm/global_data.h>
+#include <net/tftp.h>
+#include "bootp.h"
+#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
+#include <flash.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Well known TFTP port # */
+#define WELL_KNOWN_PORT 69
+/* Millisecs to timeout for lost pkt */
+#define TIMEOUT 5000UL
+#ifndef CONFIG_NET_RETRY_COUNT
+/* # of timeouts before giving up */
+# define TIMEOUT_COUNT 10
+#else
+# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
+#endif
+/* Number of "loading" hashes per line (for checking the image size) */
+#define HASHES_PER_LINE 65
+
+/*
+ * TFTP operations.
+ */
+#define TFTP_RRQ 1
+#define TFTP_WRQ 2
+#define TFTP_DATA 3
+#define TFTP_ACK 4
+#define TFTP_ERROR 5
+#define TFTP_OACK 6
+
+static ulong timeout_ms = TIMEOUT;
+static int timeout_count_max = TIMEOUT_COUNT;
+static ulong time_start; /* Record time we started tftp */
+
+/*
+ * These globals govern the timeout behavior when attempting a connection to a
+ * TFTP server. tftp_timeout_ms specifies the number of milliseconds to
+ * wait for the server to respond to initial connection. Second global,
+ * tftp_timeout_count_max, gives the number of such connection retries.
+ * tftp_timeout_count_max must be non-negative and tftp_timeout_ms must be
+ * positive. The globals are meant to be set (and restored) by code needing
+ * non-standard timeout behavior when initiating a TFTP transfer.
+ */
+ulong tftp_timeout_ms = TIMEOUT;
+int tftp_timeout_count_max = TIMEOUT_COUNT;
+
+enum {
+ TFTP_ERR_UNDEFINED = 0,
+ TFTP_ERR_FILE_NOT_FOUND = 1,
+ TFTP_ERR_ACCESS_DENIED = 2,
+ TFTP_ERR_DISK_FULL = 3,
+ TFTP_ERR_UNEXPECTED_OPCODE = 4,
+ TFTP_ERR_UNKNOWN_TRANSFER_ID = 5,
+ TFTP_ERR_FILE_ALREADY_EXISTS = 6,
+ TFTP_ERR_OPTION_NEGOTIATION = 8,
+};
+
+static struct in_addr tftp_remote_ip;
+/* The UDP port at their end */
+static int tftp_remote_port;
+/* The UDP port at our end */
+static int tftp_our_port;
+static int timeout_count;
+/* packet sequence number */
+static ulong tftp_cur_block;
+/* last packet sequence number received */
+static ulong tftp_prev_block;
+/* count of sequence number wraparounds */
+static ulong tftp_block_wrap;
+/* memory offset due to wrapping */
+static ulong tftp_block_wrap_offset;
+static int tftp_state;
+static ulong tftp_load_addr;
+#ifdef CONFIG_LMB
+static ulong tftp_load_size;
+#endif
+#ifdef CONFIG_TFTP_TSIZE
+/* The file size reported by the server */
+static int tftp_tsize;
+/* The number of hashes we printed */
+static short tftp_tsize_num_hash;
+#endif
+/* The window size negotiated */
+static ushort tftp_windowsize;
+/* Next block to send ack to */
+static ushort tftp_next_ack;
+/* Last nack block we send */
+static ushort tftp_last_nack;
+#ifdef CONFIG_CMD_TFTPPUT
+/* 1 if writing, else 0 */
+static int tftp_put_active;
+/* 1 if we have sent the last block */
+static int tftp_put_final_block_sent;
+#else
+#define tftp_put_active 0
+#endif
+
+#define STATE_SEND_RRQ 1
+#define STATE_DATA 2
+#define STATE_TOO_LARGE 3
+#define STATE_BAD_MAGIC 4
+#define STATE_OACK 5
+#define STATE_RECV_WRQ 6
+#define STATE_SEND_WRQ 7
+#define STATE_INVALID_OPTION 8
+
+/* default TFTP block size */
+#define TFTP_BLOCK_SIZE 512
+/* sequence number is 16 bit */
+#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16))
+
+#define DEFAULT_NAME_LEN (8 + 4 + 1)
+static char default_filename[DEFAULT_NAME_LEN];
+
+#ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
+#define MAX_LEN 128
+#else
+#define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
+#endif
+
+static char tftp_filename[MAX_LEN];
+
+/* 512 is poor choice for ethernet, MTU is typically 1500.
+ * Minus eth.hdrs thats 1468. Can get 2x better throughput with
+ * almost-MTU block sizes. At least try... fall back to 512 if need be.
+ * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
+ */
+
+/* When windowsize is defined to 1,
+ * tftp behaves the same way as it was
+ * never declared
+ */
+#ifdef CONFIG_TFTP_WINDOWSIZE
+#define TFTP_WINDOWSIZE CONFIG_TFTP_WINDOWSIZE
+#else
+#define TFTP_WINDOWSIZE 1
+#endif
+
+static unsigned short tftp_block_size = TFTP_BLOCK_SIZE;
+static unsigned short tftp_block_size_option = CONFIG_TFTP_BLOCKSIZE;
+static unsigned short tftp_window_size_option = TFTP_WINDOWSIZE;
+
+static inline int store_block(int block, uchar *src, unsigned int len)
+{
+ ulong offset = block * tftp_block_size + tftp_block_wrap_offset -
+ tftp_block_size;
+ ulong newsize = offset + len;
+ ulong store_addr = tftp_load_addr + offset;
+#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
+ int i, rc = 0;
+
+ for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+ /* start address in flash? */
+ if (flash_info[i].flash_id == FLASH_UNKNOWN)
+ continue;
+ if (store_addr >= flash_info[i].start[0]) {
+ rc = 1;
+ break;
+ }
+ }
+
+ if (rc) { /* Flash is destination for this packet */
+ rc = flash_write((char *)src, store_addr, len);
+ if (rc) {
+ flash_perror(rc);
+ return rc;
+ }
+ } else
+#endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
+ {
+ void *ptr;
+
+#ifdef CONFIG_LMB
+ ulong end_addr = tftp_load_addr + tftp_load_size;
+
+ if (!end_addr)
+ end_addr = ULONG_MAX;
+
+ if (store_addr < tftp_load_addr ||
+ store_addr + len > end_addr) {
+ puts("\nTFTP error: ");
+ puts("trying to overwrite reserved memory...\n");
+ return -1;
+ }
+#endif
+ ptr = map_sysmem(store_addr, len);
+ memcpy(ptr, src, len);
+ unmap_sysmem(ptr);
+ }
+
+ if (net_boot_file_size < newsize)
+ net_boot_file_size = newsize;
+
+ return 0;
+}
+
+/* Clear our state ready for a new transfer */
+static void new_transfer(void)
+{
+ tftp_prev_block = 0;
+ tftp_block_wrap = 0;
+ tftp_block_wrap_offset = 0;
+#ifdef CONFIG_CMD_TFTPPUT
+ tftp_put_final_block_sent = 0;
+#endif
+}
+
+#ifdef CONFIG_CMD_TFTPPUT
+/**
+ * Load the next block from memory to be sent over tftp.
+ *
+ * @param block Block number to send
+ * @param dst Destination buffer for data
+ * @param len Number of bytes in block (this one and every other)
+ * @return number of bytes loaded
+ */
+static int load_block(unsigned block, uchar *dst, unsigned len)
+{
+ /* We may want to get the final block from the previous set */
+ ulong offset = block * tftp_block_size + tftp_block_wrap_offset -
+ tftp_block_size;
+ ulong tosend = len;
+
+ tosend = min(net_boot_file_size - offset, tosend);
+ (void)memcpy(dst, (void *)(image_save_addr + offset), tosend);
+ debug("%s: block=%u, offset=%lu, len=%u, tosend=%lu\n", __func__,
+ block, offset, len, tosend);
+ return tosend;
+}
+#endif
+
+static void tftp_send(void);
+static void tftp_timeout_handler(void);
+
+/**********************************************************************/
+
+static void show_block_marker(void)
+{
+ ulong pos;
+
+#ifdef CONFIG_TFTP_TSIZE
+ if (tftp_tsize) {
+ pos = tftp_cur_block * tftp_block_size +
+ tftp_block_wrap_offset;
+ if (pos > tftp_tsize)
+ pos = tftp_tsize;
+
+ while (tftp_tsize_num_hash < pos * 50 / tftp_tsize) {
+ putc('#');
+ tftp_tsize_num_hash++;
+ }
+ } else
+#endif
+ {
+ pos = (tftp_cur_block - 1) +
+ (tftp_block_wrap * TFTP_SEQUENCE_SIZE);
+ if ((pos % 10) == 0)
+ putc('#');
+ else if (((pos + 1) % (10 * HASHES_PER_LINE)) == 0)
+ puts("\n\t ");
+ }
+}
+
+/**
+ * restart the current transfer due to an error
+ *
+ * @param msg Message to print for user
+ */
+static void restart(const char *msg)
+{
+ printf("\n%s; starting again\n", msg);
+ net_start_again();
+}
+
+/*
+ * Check if the block number has wrapped, and update progress
+ *
+ * TODO: The egregious use of global variables in this file should be tidied.
+ */
+static void update_block_number(void)
+{
+ /*
+ * RFC1350 specifies that the first data packet will
+ * have sequence number 1. If we receive a sequence
+ * number of 0 this means that there was a wrap
+ * around of the (16 bit) counter.
+ */
+ if (tftp_cur_block == 0 && tftp_prev_block != 0) {
+ tftp_block_wrap++;
+ tftp_block_wrap_offset += tftp_block_size * TFTP_SEQUENCE_SIZE;
+ timeout_count = 0; /* we've done well, reset the timeout */
+ }
+ show_block_marker();
+}
+
+/* The TFTP get or put is complete */
+static void tftp_complete(void)
+{
+#ifdef CONFIG_TFTP_TSIZE
+ /* Print hash marks for the last packet received */
+ while (tftp_tsize && tftp_tsize_num_hash < 49) {
+ putc('#');
+ tftp_tsize_num_hash++;
+ }
+ puts(" ");
+ print_size(tftp_tsize, "");
+#endif
+ time_start = get_timer(time_start);
+ if (time_start > 0) {
+ puts("\n\t "); /* Line up with "Loading: " */
+ print_size(net_boot_file_size /
+ time_start * 1000, "/s");
+ }
+ puts("\ndone\n");
+ if (IS_ENABLED(CONFIG_CMD_BOOTEFI)) {
+ if (!tftp_put_active)
+ efi_set_bootdev("Net", "", tftp_filename,
+ map_sysmem(tftp_load_addr, 0),
+ net_boot_file_size);
+ }
+ net_set_state(NETLOOP_SUCCESS);
+}
+
+static void tftp_send(void)
+{
+ uchar *pkt;
+ uchar *xp;
+ int len = 0;
+ ushort *s;
+ bool err_pkt = false;
+
+ /*
+ * We will always be sending some sort of packet, so
+ * cobble together the packet headers now.
+ */
+ pkt = net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE;
+
+ switch (tftp_state) {
+ case STATE_SEND_RRQ:
+ case STATE_SEND_WRQ:
+ xp = pkt;
+ s = (ushort *)pkt;
+#ifdef CONFIG_CMD_TFTPPUT
+ *s++ = htons(tftp_state == STATE_SEND_RRQ ? TFTP_RRQ :
+ TFTP_WRQ);
+#else
+ *s++ = htons(TFTP_RRQ);
+#endif
+ pkt = (uchar *)s;
+ strcpy((char *)pkt, tftp_filename);
+ pkt += strlen(tftp_filename) + 1;
+ strcpy((char *)pkt, "octet");
+ pkt += 5 /*strlen("octet")*/ + 1;
+ strcpy((char *)pkt, "timeout");
+ pkt += 7 /*strlen("timeout")*/ + 1;
+ sprintf((char *)pkt, "%lu", timeout_ms / 1000);
+ debug("send option \"timeout %s\"\n", (char *)pkt);
+ pkt += strlen((char *)pkt) + 1;
+#ifdef CONFIG_TFTP_TSIZE
+ pkt += sprintf((char *)pkt, "tsize%c%u%c",
+ 0, net_boot_file_size, 0);
+#endif
+ /* try for more effic. blk size */
+ pkt += sprintf((char *)pkt, "blksize%c%d%c",
+ 0, tftp_block_size_option, 0);
+
+ /* try for more effic. window size.
+ * Implemented only for tftp get.
+ * Don't bother sending if it's 1
+ */
+ if (tftp_state == STATE_SEND_RRQ && tftp_window_size_option > 1)
+ pkt += sprintf((char *)pkt, "windowsize%c%d%c",
+ 0, tftp_window_size_option, 0);
+ len = pkt - xp;
+ break;
+
+ case STATE_OACK:
+
+ case STATE_RECV_WRQ:
+ case STATE_DATA:
+ xp = pkt;
+ s = (ushort *)pkt;
+ s[0] = htons(TFTP_ACK);
+ s[1] = htons(tftp_cur_block);
+ pkt = (uchar *)(s + 2);
+#ifdef CONFIG_CMD_TFTPPUT
+ if (tftp_put_active) {
+ int toload = tftp_block_size;
+ int loaded = load_block(tftp_cur_block, pkt, toload);
+
+ s[0] = htons(TFTP_DATA);
+ pkt += loaded;
+ tftp_put_final_block_sent = (loaded < toload);
+ }
+#endif
+ len = pkt - xp;
+ break;
+
+ case STATE_TOO_LARGE:
+ xp = pkt;
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ERROR);
+ *s++ = htons(3);
+
+ pkt = (uchar *)s;
+ strcpy((char *)pkt, "File too large");
+ pkt += 14 /*strlen("File too large")*/ + 1;
+ len = pkt - xp;
+ err_pkt = true;
+ break;
+
+ case STATE_BAD_MAGIC:
+ xp = pkt;
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ERROR);
+ *s++ = htons(2);
+ pkt = (uchar *)s;
+ strcpy((char *)pkt, "File has bad magic");
+ pkt += 18 /*strlen("File has bad magic")*/ + 1;
+ len = pkt - xp;
+ err_pkt = true;
+ break;
+
+ case STATE_INVALID_OPTION:
+ xp = pkt;
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ERROR);
+ *s++ = htons(TFTP_ERR_OPTION_NEGOTIATION);
+ pkt = (uchar *)s;
+ strcpy((char *)pkt, "Option Negotiation Failed");
+ /* strlen("Option Negotiation Failed") + NULL*/
+ pkt += 25 + 1;
+ len = pkt - xp;
+ err_pkt = true;
+ break;
+ }
+
+ net_send_udp_packet(net_server_ethaddr, tftp_remote_ip,
+ tftp_remote_port, tftp_our_port, len);
+
+ if (err_pkt)
+ net_set_state(NETLOOP_FAIL);
+}
+
+#ifdef CONFIG_CMD_TFTPPUT
+static void icmp_handler(unsigned type, unsigned code, unsigned dest,
+ struct in_addr sip, unsigned src, uchar *pkt,
+ unsigned len)
+{
+ if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) {
+ /* Oh dear the other end has gone away */
+ restart("TFTP server died");
+ }
+}
+#endif
+
+static void tftp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
+ unsigned src, unsigned len)
+{
+ __be16 proto;
+ __be16 *s;
+ int i;
+ u16 timeout_val_rcvd;
+
+ if (dest != tftp_our_port) {
+ return;
+ }
+ if (tftp_state != STATE_SEND_RRQ && src != tftp_remote_port &&
+ tftp_state != STATE_RECV_WRQ && tftp_state != STATE_SEND_WRQ)
+ return;
+
+ if (len < 2)
+ return;
+ len -= 2;
+ /* warning: don't use increment (++) in ntohs() macros!! */
+ s = (__be16 *)pkt;
+ proto = *s++;
+ pkt = (uchar *)s;
+ switch (ntohs(proto)) {
+ case TFTP_RRQ:
+ break;
+
+ case TFTP_ACK:
+#ifdef CONFIG_CMD_TFTPPUT
+ if (tftp_put_active) {
+ if (tftp_put_final_block_sent) {
+ tftp_complete();
+ } else {
+ /*
+ * Move to the next block. We want our block
+ * count to wrap just like the other end!
+ */
+ int block = ntohs(*s);
+ int ack_ok = (tftp_cur_block == block);
+
+ tftp_prev_block = tftp_cur_block;
+ tftp_cur_block = (unsigned short)(block + 1);
+ update_block_number();
+ if (ack_ok)
+ tftp_send(); /* Send next data block */
+ }
+ }
+#endif
+ break;
+
+ default:
+ break;
+
+#ifdef CONFIG_CMD_TFTPSRV
+ case TFTP_WRQ:
+ debug("Got WRQ\n");
+ tftp_remote_ip = sip;
+ tftp_remote_port = src;
+ tftp_our_port = 1024 + (get_timer(0) % 3072);
+ new_transfer();
+ tftp_send(); /* Send ACK(0) */
+ break;
+#endif
+
+ case TFTP_OACK:
+ debug("Got OACK: ");
+ for (i = 0; i < len; i++) {
+ if (pkt[i] == '\0')
+ debug(" ");
+ else
+ debug("%c", pkt[i]);
+ }
+ debug("\n");
+ tftp_state = STATE_OACK;
+ tftp_remote_port = src;
+ /*
+ * Check for 'blksize' option.
+ * Careful: "i" is signed, "len" is unsigned, thus
+ * something like "len-8" may give a *huge* number
+ */
+ for (i = 0; i+8 < len; i++) {
+ if (strcasecmp((char *)pkt + i, "blksize") == 0) {
+ tftp_block_size = (unsigned short)
+ simple_strtoul((char *)pkt + i + 8,
+ NULL, 10);
+ debug("Blocksize oack: %s, %d\n",
+ (char *)pkt + i + 8, tftp_block_size);
+ if (tftp_block_size > tftp_block_size_option) {
+ printf("Invalid blk size(=%d)\n",
+ tftp_block_size);
+ tftp_state = STATE_INVALID_OPTION;
+ }
+ }
+ if (strcasecmp((char *)pkt + i, "timeout") == 0) {
+ timeout_val_rcvd = (unsigned short)
+ simple_strtoul((char *)pkt + i + 8,
+ NULL, 10);
+ debug("Timeout oack: %s, %d\n",
+ (char *)pkt + i + 8, timeout_val_rcvd);
+ if (timeout_val_rcvd != (timeout_ms / 1000)) {
+ printf("Invalid timeout val(=%d s)\n",
+ timeout_val_rcvd);
+ tftp_state = STATE_INVALID_OPTION;
+ }
+ }
+#ifdef CONFIG_TFTP_TSIZE
+ if (strcasecmp((char *)pkt + i, "tsize") == 0) {
+ tftp_tsize = simple_strtoul((char *)pkt + i + 6,
+ NULL, 10);
+ debug("size = %s, %d\n",
+ (char *)pkt + i + 6, tftp_tsize);
+ }
+#endif
+ if (strcasecmp((char *)pkt + i, "windowsize") == 0) {
+ tftp_windowsize =
+ simple_strtoul((char *)pkt + i + 11,
+ NULL, 10);
+ debug("windowsize = %s, %d\n",
+ (char *)pkt + i + 11, tftp_windowsize);
+ }
+ }
+
+ tftp_next_ack = tftp_windowsize;
+
+#ifdef CONFIG_CMD_TFTPPUT
+ if (tftp_put_active && tftp_state == STATE_OACK) {
+ /* Get ready to send the first block */
+ tftp_state = STATE_DATA;
+ tftp_cur_block++;
+ }
+#endif
+ tftp_send(); /* Send ACK or first data block */
+ break;
+ case TFTP_DATA:
+ if (len < 2)
+ return;
+ len -= 2;
+
+ if (ntohs(*(__be16 *)pkt) != (ushort)(tftp_cur_block + 1)) {
+ debug("Received unexpected block: %d, expected: %d\n",
+ ntohs(*(__be16 *)pkt),
+ (ushort)(tftp_cur_block + 1));
+ /*
+ * If one packet is dropped most likely
+ * all other buffers in the window
+ * that will arrive will cause a sending NACK.
+ * This just overwellms the server, let's just send one.
+ */
+ if (tftp_last_nack != tftp_cur_block) {
+ tftp_send();
+ tftp_last_nack = tftp_cur_block;
+ tftp_next_ack = (ushort)(tftp_cur_block +
+ tftp_windowsize);
+ }
+ break;
+ }
+
+ tftp_cur_block++;
+ tftp_cur_block %= TFTP_SEQUENCE_SIZE;
+
+ if (tftp_state == STATE_SEND_RRQ) {
+ debug("Server did not acknowledge any options!\n");
+ tftp_next_ack = tftp_windowsize;
+ }
+
+ if (tftp_state == STATE_SEND_RRQ || tftp_state == STATE_OACK ||
+ tftp_state == STATE_RECV_WRQ) {
+ /* first block received */
+ tftp_state = STATE_DATA;
+ tftp_remote_port = src;
+ new_transfer();
+
+ if (tftp_cur_block != 1) { /* Assertion */
+ puts("\nTFTP error: ");
+ printf("First block is not block 1 (%ld)\n",
+ tftp_cur_block);
+ puts("Starting again\n\n");
+ net_start_again();
+ break;
+ }
+ }
+
+ if (tftp_cur_block == tftp_prev_block) {
+ /* Same block again; ignore it. */
+ break;
+ }
+
+ update_block_number();
+ tftp_prev_block = tftp_cur_block;
+ timeout_count_max = tftp_timeout_count_max;
+ net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
+
+ if (store_block(tftp_cur_block, pkt + 2, len)) {
+ eth_halt();
+ net_set_state(NETLOOP_FAIL);
+ break;
+ }
+
+ if (len < tftp_block_size) {
+ tftp_send();
+ tftp_complete();
+ break;
+ }
+
+ /*
+ * Acknowledge the block just received, which will prompt
+ * the remote for the next one.
+ */
+ if (tftp_cur_block == tftp_next_ack) {
+ tftp_send();
+ tftp_next_ack += tftp_windowsize;
+ }
+ break;
+
+ case TFTP_ERROR:
+ printf("\nTFTP error: '%s' (%d)\n",
+ pkt + 2, ntohs(*(__be16 *)pkt));
+
+ switch (ntohs(*(__be16 *)pkt)) {
+ case TFTP_ERR_FILE_NOT_FOUND:
+ case TFTP_ERR_ACCESS_DENIED:
+ puts("Not retrying...\n");
+ eth_halt();
+ net_set_state(NETLOOP_FAIL);
+ break;
+ case TFTP_ERR_UNDEFINED:
+ case TFTP_ERR_DISK_FULL:
+ case TFTP_ERR_UNEXPECTED_OPCODE:
+ case TFTP_ERR_UNKNOWN_TRANSFER_ID:
+ case TFTP_ERR_FILE_ALREADY_EXISTS:
+ default:
+ puts("Starting again\n\n");
+ net_start_again();
+ break;
+ }
+ break;
+ }
+}
+
+
+static void tftp_timeout_handler(void)
+{
+ if (++timeout_count > timeout_count_max) {
+ restart("Retry count exceeded");
+ } else {
+ puts("T ");
+ net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
+ if (tftp_state != STATE_RECV_WRQ)
+ tftp_send();
+ }
+}
+
+/* Initialize tftp_load_addr and tftp_load_size from image_load_addr and lmb */
+static int tftp_init_load_addr(void)
+{
+#ifdef CONFIG_LMB
+ struct lmb lmb;
+ phys_size_t max_size;
+
+ lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
+
+ max_size = lmb_get_free_size(&lmb, image_load_addr);
+ if (!max_size)
+ return -1;
+
+ tftp_load_size = max_size;
+#endif
+ tftp_load_addr = image_load_addr;
+ return 0;
+}
+
+void tftp_start(enum proto_t protocol)
+{
+#if CONFIG_NET_TFTP_VARS
+ char *ep; /* Environment pointer */
+
+ /*
+ * Allow the user to choose TFTP blocksize and timeout.
+ * TFTP protocol has a minimal timeout of 1 second.
+ */
+
+ ep = env_get("tftpblocksize");
+ if (ep != NULL)
+ tftp_block_size_option = simple_strtol(ep, NULL, 10);
+
+ ep = env_get("tftpwindowsize");
+ if (ep != NULL)
+ tftp_window_size_option = simple_strtol(ep, NULL, 10);
+
+ ep = env_get("tftptimeout");
+ if (ep != NULL)
+ timeout_ms = simple_strtol(ep, NULL, 10);
+
+ if (timeout_ms < 1000) {
+ printf("TFTP timeout (%ld ms) too low, set min = 1000 ms\n",
+ timeout_ms);
+ timeout_ms = 1000;
+ }
+
+ ep = env_get("tftptimeoutcountmax");
+ if (ep != NULL)
+ tftp_timeout_count_max = simple_strtol(ep, NULL, 10);
+
+ if (tftp_timeout_count_max < 0) {
+ printf("TFTP timeout count max (%d ms) negative, set to 0\n",
+ tftp_timeout_count_max);
+ tftp_timeout_count_max = 0;
+ }
+#endif
+
+ debug("TFTP blocksize = %i, TFTP windowsize = %d timeout = %ld ms\n",
+ tftp_block_size_option, tftp_window_size_option, timeout_ms);
+
+ tftp_remote_ip = net_server_ip;
+ if (!net_parse_bootfile(&tftp_remote_ip, tftp_filename, MAX_LEN)) {
+ sprintf(default_filename, "%02X%02X%02X%02X.img",
+ net_ip.s_addr & 0xFF,
+ (net_ip.s_addr >> 8) & 0xFF,
+ (net_ip.s_addr >> 16) & 0xFF,
+ (net_ip.s_addr >> 24) & 0xFF);
+
+ strncpy(tftp_filename, default_filename, DEFAULT_NAME_LEN);
+ tftp_filename[DEFAULT_NAME_LEN - 1] = 0;
+
+ printf("*** Warning: no boot file name; using '%s'\n",
+ tftp_filename);
+ }
+
+ printf("Using %s device\n", eth_get_name());
+ printf("TFTP %s server %pI4; our IP address is %pI4",
+#ifdef CONFIG_CMD_TFTPPUT
+ protocol == TFTPPUT ? "to" : "from",
+#else
+ "from",
+#endif
+ &tftp_remote_ip, &net_ip);
+
+ /* Check if we need to send across this subnet */
+ if (net_gateway.s_addr && net_netmask.s_addr) {
+ struct in_addr our_net;
+ struct in_addr remote_net;
+
+ our_net.s_addr = net_ip.s_addr & net_netmask.s_addr;
+ remote_net.s_addr = tftp_remote_ip.s_addr & net_netmask.s_addr;
+ if (our_net.s_addr != remote_net.s_addr)
+ printf("; sending through gateway %pI4", &net_gateway);
+ }
+ putc('\n');
+
+ printf("Filename '%s'.", tftp_filename);
+
+ if (net_boot_file_expected_size_in_blocks) {
+ printf(" Size is 0x%x Bytes = ",
+ net_boot_file_expected_size_in_blocks << 9);
+ print_size(net_boot_file_expected_size_in_blocks << 9, "");
+ }
+
+ putc('\n');
+#ifdef CONFIG_CMD_TFTPPUT
+ tftp_put_active = (protocol == TFTPPUT);
+ if (tftp_put_active) {
+ printf("Save address: 0x%lx\n", image_save_addr);
+ printf("Save size: 0x%lx\n", image_save_size);
+ net_boot_file_size = image_save_size;
+ puts("Saving: *\b");
+ tftp_state = STATE_SEND_WRQ;
+ new_transfer();
+ } else
+#endif
+ {
+ if (tftp_init_load_addr()) {
+ eth_halt();
+ net_set_state(NETLOOP_FAIL);
+ puts("\nTFTP error: ");
+ puts("trying to overwrite reserved memory...\n");
+ return;
+ }
+ printf("Load address: 0x%lx\n", tftp_load_addr);
+ puts("Loading: *\b");
+ tftp_state = STATE_SEND_RRQ;
+ }
+
+ time_start = get_timer(0);
+ timeout_count_max = tftp_timeout_count_max;
+
+ net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
+ net_set_udp_handler(tftp_handler);
+#ifdef CONFIG_CMD_TFTPPUT
+ net_set_icmp_handler(icmp_handler);
+#endif
+ tftp_remote_port = WELL_KNOWN_PORT;
+ timeout_count = 0;
+ /* Use a pseudo-random port unless a specific port is set */
+ tftp_our_port = 1024 + (get_timer(0) % 3072);
+
+#ifdef CONFIG_TFTP_PORT
+ ep = env_get("tftpdstp");
+ if (ep != NULL)
+ tftp_remote_port = simple_strtol(ep, NULL, 10);
+ ep = env_get("tftpsrcp");
+ if (ep != NULL)
+ tftp_our_port = simple_strtol(ep, NULL, 10);
+#endif
+ tftp_cur_block = 0;
+ tftp_windowsize = 1;
+ tftp_last_nack = 0;
+ /* zero out server ether in case the server ip has changed */
+ memset(net_server_ethaddr, 0, 6);
+ /* Revert tftp_block_size to dflt */
+ tftp_block_size = TFTP_BLOCK_SIZE;
+#ifdef CONFIG_TFTP_TSIZE
+ tftp_tsize = 0;
+ tftp_tsize_num_hash = 0;
+#endif
+
+ tftp_send();
+}
+
+#ifdef CONFIG_CMD_TFTPSRV
+void tftp_start_server(void)
+{
+ tftp_filename[0] = 0;
+
+ if (tftp_init_load_addr()) {
+ eth_halt();
+ net_set_state(NETLOOP_FAIL);
+ puts("\nTFTP error: trying to overwrite reserved memory...\n");
+ return;
+ }
+ printf("Using %s device\n", eth_get_name());
+ printf("Listening for TFTP transfer on %pI4\n", &net_ip);
+ printf("Load address: 0x%lx\n", tftp_load_addr);
+
+ puts("Loading: *\b");
+
+ timeout_count_max = tftp_timeout_count_max;
+ timeout_count = 0;
+ timeout_ms = TIMEOUT;
+ net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
+
+ /* Revert tftp_block_size to dflt */
+ tftp_block_size = TFTP_BLOCK_SIZE;
+ tftp_cur_block = 0;
+ tftp_our_port = WELL_KNOWN_PORT;
+
+#ifdef CONFIG_TFTP_TSIZE
+ tftp_tsize = 0;
+ tftp_tsize_num_hash = 0;
+#endif
+
+ tftp_state = STATE_RECV_WRQ;
+ net_set_udp_handler(tftp_handler);
+
+ /* zero out server ether in case the server ip has changed */
+ memset(net_server_ethaddr, 0, 6);
+}
+#endif /* CONFIG_CMD_TFTPSRV */
+
--
cgit