diff options
Diffstat (limited to 'roms/u-boot/net/tftp.c')
| -rw-r--r-- | roms/u-boot/net/tftp.c | 931 |
1 files changed, 931 insertions, 0 deletions
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 */ + |