From 8bde7f776c77b343aca29b8c7b58464d915ac245 Mon Sep 17 00:00:00 2001 From: wdenk Date: Fri, 27 Jun 2003 21:31:46 +0000 Subject: * Code cleanup: - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen) --- common/cmd_boot.c | 1114 +---------------------------------------------------- 1 file changed, 16 insertions(+), 1098 deletions(-) (limited to 'common/cmd_boot.c') diff --git a/common/cmd_boot.c b/common/cmd_boot.c index fef84597dd..a0bc04ba60 100644 --- a/common/cmd_boot.c +++ b/common/cmd_boot.c @@ -1,5 +1,5 @@ /* - * (C) Copyright 2000-2002 + * (C) Copyright 2000-2003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this @@ -22,170 +22,16 @@ */ /* - * Boot support + * Misc boot support */ #include #include -#include #include -#include #include #include -#if (CONFIG_COMMANDS & CFG_CMD_LOADS) -static ulong load_serial (ulong offset); -static int read_record (char *buf, ulong len); -# if (CONFIG_COMMANDS & CFG_CMD_SAVES) -static int save_serial (ulong offset, ulong size); -static int write_record (char *buf); -# endif /* CFG_CMD_SAVES */ - -static int do_echo = 1; -#endif /* CFG_CMD_LOADS */ - - -#if (CONFIG_COMMANDS & CFG_CMD_BDI) -static void print_num(const char *, ulong); - -#ifndef CONFIG_ARM /* PowerPC and other */ - -#ifdef CONFIG_PPC -static void print_str(const char *, const char *); - -int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - DECLARE_GLOBAL_DATA_PTR; - - int i; - bd_t *bd = gd->bd; - char buf[32]; - -#ifdef DEBUG - print_num ("bd address", (ulong)bd ); -#endif - print_num ("memstart", bd->bi_memstart ); - print_num ("memsize", bd->bi_memsize ); - print_num ("flashstart", bd->bi_flashstart ); - print_num ("flashsize", bd->bi_flashsize ); - print_num ("flashoffset", bd->bi_flashoffset ); - print_num ("sramstart", bd->bi_sramstart ); - print_num ("sramsize", bd->bi_sramsize ); -#if defined(CONFIG_5xx) || defined(CONFIG_8xx) || defined(CONFIG_8260) - print_num ("immr_base", bd->bi_immr_base ); -#endif - print_num ("bootflags", bd->bi_bootflags ); -#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_405EP) - print_str ("procfreq", strmhz(buf, bd->bi_procfreq)); - print_str ("plb_busfreq", strmhz(buf, bd->bi_plb_busfreq)); -#if defined(CONFIG_405GP) || defined(CONFIG_405EP) - print_str ("pci_busfreq", strmhz(buf, bd->bi_pci_busfreq)); -#endif -#else -#if defined(CONFIG_8260) - print_str ("vco", strmhz(buf, bd->bi_vco)); - print_str ("sccfreq", strmhz(buf, bd->bi_sccfreq)); - print_str ("brgfreq", strmhz(buf, bd->bi_brgfreq)); -#endif - print_str ("intfreq", strmhz(buf, bd->bi_intfreq)); -#if defined(CONFIG_8260) - print_str ("cpmfreq", strmhz(buf, bd->bi_cpmfreq)); -#endif - print_str ("busfreq", strmhz(buf, bd->bi_busfreq)); -#endif /* defined(CONFIG_405GP) || defined(CONFIG_405CR) */ - printf ("ethaddr ="); - for (i=0; i<6; ++i) { - printf ("%c%02X", i ? ':' : ' ', bd->bi_enetaddr[i]); - } -#ifdef CONFIG_PN62 - printf ("\neth1addr ="); - for (i=0; i<6; ++i) { - printf ("%c%02X", i ? ':' : ' ', bd->bi_enet1addr[i]); - } -#endif /* CONFIG_PN62 */ -#ifdef CONFIG_HERMES - print_str ("ethspeed", strmhz(buf, bd->bi_ethspeed)); -#endif - printf ("\nIP addr = "); print_IPaddr (bd->bi_ip_addr); - printf ("\nbaudrate = %6ld bps\n", bd->bi_baudrate ); - return 0; -} - -#else /* MIPS */ - -int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - DECLARE_GLOBAL_DATA_PTR; - - int i; - bd_t *bd = gd->bd; - - print_num ("boot_params", (ulong)bd->bi_boot_params); - print_num ("memstart", (ulong)bd->bi_memstart); - print_num ("memsize", (ulong)bd->bi_memsize); - print_num ("flashstart", (ulong)bd->bi_flashstart); - print_num ("flashsize", (ulong)bd->bi_flashsize); - print_num ("flashoffset", (ulong)bd->bi_flashoffset); - - printf ("ethaddr ="); - for (i=0; i<6; ++i) { - printf ("%c%02X", i ? ':' : ' ', bd->bi_enetaddr[i]); - } - printf ("\nip_addr = "); - print_IPaddr (bd->bi_ip_addr); - printf ("\nbaudrate = %d bps\n", bd->bi_baudrate); - - return 0; -} -#endif /* MIPS */ - -#else /* ARM */ - -int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - DECLARE_GLOBAL_DATA_PTR; - - int i; - bd_t *bd = gd->bd; - - print_num ("arch_number", bd->bi_arch_number); - print_num ("env_t", (ulong)bd->bi_env); - print_num ("boot_params", (ulong)bd->bi_boot_params); - - for (i=0; i start", bd->bi_dram[i].start); - print_num("-> size", bd->bi_dram[i].size); - } - - printf ("ethaddr ="); - for (i=0; i<6; ++i) { - printf ("%c%02X", i ? ':' : ' ', bd->bi_enetaddr[i]); - } - printf ("\n" - "ip_addr = "); - print_IPaddr (bd->bi_ip_addr); - printf ("\n" - "baudrate = %d bps\n", bd->bi_baudrate); - - return 0; -} - -#endif /* CONFIG_ARM XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */ - -static void print_num(const char *name, ulong value) -{ - printf ("%-12s= 0x%08lX\n", name, value); -} - -#ifdef CONFIG_PPC -static void print_str(const char *name, const char *str) -{ - printf ("%-12s= %6s MHz\n", name, str); -} -#endif /* CONFIG_PPC */ - -#endif /* CFG_CMD_BDI */ +/* -------------------------------------------------------------------- */ int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { @@ -212,947 +58,19 @@ int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) return rcode; } -#if (CONFIG_COMMANDS & CFG_CMD_LOADS) -int do_load_serial (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - ulong offset = 0; - ulong addr; - int i; - char *env_echo; - int rcode = 0; -#ifdef CFG_LOADS_BAUD_CHANGE - DECLARE_GLOBAL_DATA_PTR; - int load_baudrate, current_baudrate; - - load_baudrate = current_baudrate = gd->baudrate; -#endif - - if (((env_echo = getenv("loads_echo")) != NULL) && (*env_echo == '1')) { - do_echo = 1; - } else { - do_echo = 0; - } - -#ifdef CFG_LOADS_BAUD_CHANGE - if (argc >= 2) { - offset = simple_strtoul(argv[1], NULL, 16); - } - if (argc == 3) { - load_baudrate = (int)simple_strtoul(argv[2], NULL, 10); - - /* default to current baudrate */ - if (load_baudrate == 0) - load_baudrate = current_baudrate; - } -#else /* ! CFG_LOADS_BAUD_CHANGE */ - if (argc == 2) { - offset = simple_strtoul(argv[1], NULL, 16); - } -#endif /* CFG_LOADS_BAUD_CHANGE */ - -#ifdef CFG_LOADS_BAUD_CHANGE - if (load_baudrate != current_baudrate) { - printf ("## Switch baudrate to %d bps and press ENTER ...\n", - load_baudrate); - udelay(50000); - gd->baudrate = load_baudrate; - serial_setbrg (); - udelay(50000); - for (;;) { - if (getc() == '\r') - break; - } - } -#endif /* CFG_LOADS_BAUD_CHANGE */ - printf ("## Ready for S-Record download ...\n"); - - addr = load_serial (offset); - - /* - * Gather any trailing characters (for instance, the ^D which - * is sent by 'cu' after sending a file), and give the - * box some time (100 * 1 ms) - */ - for (i=0; i<100; ++i) { - if (serial_tstc()) { - (void) serial_getc(); - } - udelay(1000); - } - - if (addr == ~0) { - printf ("## S-Record download aborted\n"); - rcode = 1; - } else { - printf ("## Start Addr = 0x%08lX\n", addr); - load_addr = addr; - } - -#ifdef CFG_LOADS_BAUD_CHANGE - if (load_baudrate != current_baudrate) { - printf ("## Switch baudrate to %d bps and press ESC ...\n", - current_baudrate); - udelay (50000); - gd->baudrate = current_baudrate; - serial_setbrg (); - udelay (50000); - for (;;) { - if (getc() == 0x1B) /* ESC */ - break; - } - } -#endif - return rcode; -} - -static ulong -load_serial (ulong offset) -{ - char record[SREC_MAXRECLEN + 1]; /* buffer for one S-Record */ - char binbuf[SREC_MAXBINLEN]; /* buffer for binary data */ - int binlen; /* no. of data bytes in S-Rec. */ - int type; /* return code for record type */ - ulong addr; /* load address from S-Record */ - ulong size; /* number of bytes transferred */ - char buf[32]; - ulong store_addr; - ulong start_addr = ~0; - ulong end_addr = 0; - int line_count = 0; - - while (read_record(record, SREC_MAXRECLEN + 1) >= 0) { - type = srec_decode (record, &binlen, &addr, binbuf); - - if (type < 0) { - return (~0); /* Invalid S-Record */ - } - - switch (type) { - case SREC_DATA2: - case SREC_DATA3: - case SREC_DATA4: - store_addr = addr + offset; -#ifndef CFG_NO_FLASH - if (addr2info(store_addr)) { - int rc; - - rc = flash_write((uchar *)binbuf,store_addr,binlen); - if (rc != 0) { - flash_perror (rc); - return (~0); - } - } else -#endif - { - memcpy ((char *)(store_addr), binbuf, binlen); - } - if ((store_addr) < start_addr) - start_addr = store_addr; - if ((store_addr + binlen - 1) > end_addr) - end_addr = store_addr + binlen - 1; - break; - case SREC_END2: - case SREC_END3: - case SREC_END4: - udelay (10000); - size = end_addr - start_addr + 1; - printf ("\n" - "## First Load Addr = 0x%08lX\n" - "## Last Load Addr = 0x%08lX\n" - "## Total Size = 0x%08lX = %ld Bytes\n", - start_addr, end_addr, size, size - ); - flush_cache (addr, size); - sprintf(buf, "%lX", size); - setenv("filesize", buf); - return (addr); - case SREC_START: - break; - default: - break; - } - if (!do_echo) { /* print a '.' every 100 lines */ - if ((++line_count % 100) == 0) - putc ('.'); - } - } - - return (~0); /* Download aborted */ -} - -static int -read_record (char *buf, ulong len) -{ - char *p; - char c; - - --len; /* always leave room for terminating '\0' byte */ - - for (p=buf; p < buf+len; ++p) { - c = serial_getc(); /* read character */ - if (do_echo) - serial_putc (c); /* ... and echo it */ - - switch (c) { - case '\r': - case '\n': - *p = '\0'; - return (p - buf); - case '\0': - case 0x03: /* ^C - Control C */ - return (-1); - default: - *p = c; - } - - /* Check for the console hangup (if any different from serial) */ -#ifdef CONFIG_PPC /* we don't have syscall_tbl anywhere else */ - if (syscall_tbl[SYSCALL_GETC] != serial_getc) { - if (ctrlc()) { - return (-1); - } - } -#endif - } - - /* line too long - truncate */ - *p = '\0'; - return (p - buf); -} - -#if (CONFIG_COMMANDS & CFG_CMD_SAVES) - -int do_save_serial (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - ulong offset = 0; - ulong size = 0; -#ifdef CFG_LOADS_BAUD_CHANGE - DECLARE_GLOBAL_DATA_PTR; - int save_baudrate, current_baudrate; - - save_baudrate = current_baudrate = gd->baudrate; -#endif - - if (argc >= 2) { - offset = simple_strtoul(argv[1], NULL, 16); - } -#ifdef CFG_LOADS_BAUD_CHANGE - if (argc >= 3) { - size = simple_strtoul(argv[2], NULL, 16); - } - if (argc == 4) { - save_baudrate = (int)simple_strtoul(argv[3], NULL, 10); - - /* default to current baudrate */ - if (save_baudrate == 0) - save_baudrate = current_baudrate; - } -#else /* ! CFG_LOADS_BAUD_CHANGE */ - if (argc == 3) { - size = simple_strtoul(argv[2], NULL, 16); - } -#endif /* CFG_LOADS_BAUD_CHANGE */ - -#ifdef CFG_LOADS_BAUD_CHANGE - if (save_baudrate != current_baudrate) { - printf ("## Switch baudrate to %d bps and press ENTER ...\n", - save_baudrate); - udelay(50000); - gd->baudrate = save_baudrate; - serial_setbrg (); - udelay(50000); - for (;;) { - if (getc() == '\r') - break; - } - } -#endif /* CFG_LOADS_BAUD_CHANGE */ - printf ("## Ready for S-Record upload, press ENTER to proceed ...\n"); - for (;;) { - if (getc() == '\r') - break; - } - if(save_serial (offset, size)) { - printf ("## S-Record upload aborted\n"); - } else { - printf ("## S-Record upload complete\n"); - } -#ifdef CFG_LOADS_BAUD_CHANGE - if (save_baudrate != current_baudrate) { - printf ("## Switch baudrate to %d bps and press ESC ...\n", - (int)current_baudrate); - udelay (50000); - gd->baudrate = current_baudrate; - serial_setbrg (); - udelay (50000); - for (;;) { - if (getc() == 0x1B) /* ESC */ - break; - } - } -#endif - return 0; -} - -#define SREC3_START "S0030000FC\n" -#define SREC3_FORMAT "S3%02X%08lX%s%02X\n" -#define SREC3_END "S70500000000FA\n" -#define SREC_BYTES_PER_RECORD 16 - -static int save_serial (ulong address, ulong count) -{ - int i, c, reclen, checksum, length; - char *hex = "0123456789ABCDEF"; - char record[2*SREC_BYTES_PER_RECORD+16]; /* buffer for one S-Record */ - char data[2*SREC_BYTES_PER_RECORD+1]; /* buffer for hex data */ - - reclen = 0; - checksum = 0; - - if(write_record(SREC3_START)) /* write the header */ - return (-1); - do { - if(count) { /* collect hex data in the buffer */ - c = *(volatile uchar*)(address + reclen); /* get one byte */ - checksum += c; /* accumulate checksum */ - data[2*reclen] = hex[(c>>4)&0x0f]; - data[2*reclen+1] = hex[c & 0x0f]; - data[2*reclen+2] = '\0'; - ++reclen; - --count; - } - if(reclen == SREC_BYTES_PER_RECORD || count == 0) { - /* enough data collected for one record: dump it */ - if(reclen) { /* build & write a data record: */ - /* address + data + checksum */ - length = 4 + reclen + 1; - - /* accumulate length bytes into checksum */ - for(i = 0; i < 2; i++) - checksum += (length >> (8*i)) & 0xff; - - /* accumulate address bytes into checksum: */ - for(i = 0; i < 4; i++) - checksum += (address >> (8*i)) & 0xff; - - /* make proper checksum byte: */ - checksum = ~checksum & 0xff; - - /* output one record: */ - sprintf(record, SREC3_FORMAT, length, address, data, checksum); - if(write_record(record)) - return (-1); - } - address += reclen; /* increment address */ - checksum = 0; - reclen = 0; - } - } - while(count); - if(write_record(SREC3_END)) /* write the final record */ - return (-1); - return(0); -} - -static int -write_record (char *buf) -{ - char c; - - while((c = *buf++)) - serial_putc(c); - - /* Check for the console hangup (if any different from serial) */ - - if (ctrlc()) { - return (-1); - } - return (0); -} -# endif /* CFG_CMD_SAVES */ - -#endif /* CFG_CMD_LOADS */ - - -#if (CONFIG_COMMANDS & CFG_CMD_LOADB) /* loadb command (load binary) included */ - -#define XON_CHAR 17 -#define XOFF_CHAR 19 -#define START_CHAR 0x01 -#define ETX_CHAR 0x03 -#define END_CHAR 0x0D -#define SPACE 0x20 -#define K_ESCAPE 0x23 -#define SEND_TYPE 'S' -#define DATA_TYPE 'D' -#define ACK_TYPE 'Y' -#define NACK_TYPE 'N' -#define BREAK_TYPE 'B' -#define tochar(x) ((char) (((x) + SPACE) & 0xff)) -#define untochar(x) ((int) (((x) - SPACE) & 0xff)) - -extern int os_data_count; -extern int os_data_header[8]; - -static void set_kerm_bin_mode(unsigned long *); -static int k_recv(void); -static ulong load_serial_bin (ulong offset); - - -char his_eol; /* character he needs at end of packet */ -int his_pad_count; /* number of pad chars he needs */ -char his_pad_char; /* pad chars he needs */ -char his_quote; /* quote chars he'll use */ - -int do_load_serial_bin (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - DECLARE_GLOBAL_DATA_PTR; - - ulong offset = 0; - ulong addr; - int load_baudrate, current_baudrate; - int rcode = 0; - char *s; - - /* pre-set offset from CFG_LOAD_ADDR */ - offset = CFG_LOAD_ADDR; - - /* pre-set offset from $loadaddr */ - if ((s = getenv("loadaddr")) != NULL) { - offset = simple_strtoul(s, NULL, 16); - } - - load_baudrate = current_baudrate = gd->baudrate; - - if (argc >= 2) { - offset = simple_strtoul(argv[1], NULL, 16); - } - if (argc == 3) { - load_baudrate = (int)simple_strtoul(argv[2], NULL, 10); - - /* default to current baudrate */ - if (load_baudrate == 0) - load_baudrate = current_baudrate; - } - - if (load_baudrate != current_baudrate) { - printf ("## Switch baudrate to %d bps and press ENTER ...\n", - load_baudrate); - udelay(50000); - gd->baudrate = load_baudrate; - serial_setbrg (); - udelay(50000); - for (;;) { - if (getc() == '\r') - break; - } - } - - printf ("## Ready for binary (kermit) download " - "to 0x%08lX at %d bps...\n", - offset, - current_baudrate); - addr = load_serial_bin (offset); - - if (addr == ~0) { - load_addr = 0; - printf ("## Binary (kermit) download aborted\n"); - rcode = 1; - } else { - printf ("## Start Addr = 0x%08lX\n", addr); - load_addr = addr; - } - - if (load_baudrate != current_baudrate) { - printf ("## Switch baudrate to %d bps and press ESC ...\n", - current_baudrate); - udelay (50000); - gd->baudrate = current_baudrate; - serial_setbrg (); - udelay (50000); - for (;;) { - if (getc() == 0x1B) /* ESC */ - break; - } - } - -#ifdef CONFIG_AUTOSCRIPT - if (load_addr) { - char *s; - - if (((s = getenv("autoscript")) != NULL) && (strcmp(s,"yes") == 0)) { - printf("Running autoscript at addr 0x%08lX ...\n", load_addr); - rcode = autoscript (load_addr); - } - } -#endif - return rcode; -} - - -static ulong load_serial_bin (ulong offset) -{ - int size, i; - char buf[32]; - - set_kerm_bin_mode ((ulong *) offset); - size = k_recv (); - - /* - * Gather any trailing characters (for instance, the ^D which - * is sent by 'cu' after sending a file), and give the - * box some time (100 * 1 ms) - */ - for (i=0; i<100; ++i) { - if (serial_tstc()) { - (void) serial_getc(); - } - udelay(1000); - } - - flush_cache (offset, size); - - printf("## Total Size = 0x%08x = %d Bytes\n", size, size); - sprintf(buf, "%X", size); - setenv("filesize", buf); - - return offset; -} - -void send_pad (void) -{ - int count = his_pad_count; - - while (count-- > 0) - serial_putc (his_pad_char); -} - -/* converts escaped kermit char to binary char */ -char ktrans (char in) -{ - if ((in & 0x60) == 0x40) { - return (char) (in & ~0x40); - } else if ((in & 0x7f) == 0x3f) { - return (char) (in | 0x40); - } else - return in; -} - -int chk1 (char *buffer) -{ - int total = 0; +/* -------------------------------------------------------------------- */ - while (*buffer) { - total += *buffer++; - } - return (int) ((total + ((total >> 6) & 0x03)) & 0x3f); -} +cmd_tbl_t U_BOOT_CMD(GO) = MK_CMD_ENTRY( + "go", CFG_MAXARGS, 1, do_go, + "go - start application at address 'addr'\n", + "addr [arg ...]\n - start application at address 'addr'\n" + " passing 'arg' as arguments\n" +); -void s1_sendpacket (char *packet) -{ - send_pad (); - while (*packet) { - serial_putc (*packet++); - } -} +extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); -static char a_b[24]; -void send_ack (int n) -{ - a_b[0] = START_CHAR; - a_b[1] = tochar (3); - a_b[2] = tochar (n); - a_b[3] = ACK_TYPE; - a_b[4] = '\0'; - a_b[4] = tochar (chk1 (&a_b[1])); - a_b[5] = his_eol; - a_b[6] = '\0'; - s1_sendpacket (a_b); -} - -void send_nack (int n) -{ - a_b[0] = START_CHAR; - a_b[1] = tochar (3); - a_b[2] = tochar (n); - a_b[3] = NACK_TYPE; - a_b[4] = '\0'; - a_b[4] = tochar (chk1 (&a_b[1])); - a_b[5] = his_eol; - a_b[6] = '\0'; - s1_sendpacket (a_b); -} - - - -/* os_data_* takes an OS Open image and puts it into memory, and - puts the boot header in an array named os_data_header - - if image is binary, no header is stored in os_data_header. -*/ -void (*os_data_init) (void); -void (*os_data_char) (char new_char); -static int os_data_state, os_data_state_saved; -int os_data_count; -static int os_data_count_saved; -static char *os_data_addr, *os_data_addr_saved; -static char *bin_start_address; -int os_data_header[8]; -static void bin_data_init (void) -{ - os_data_state = 0; - os_data_count = 0; - os_data_addr = bin_start_address; -} -static void os_data_save (void) -{ - os_data_state_saved = os_data_state; - os_data_count_saved = os_data_count; - os_data_addr_saved = os_data_addr; -} -static void os_data_restore (void) -{ - os_data_state = os_data_state_saved; - os_data_count = os_data_count_saved; - os_data_addr = os_data_addr_saved; -} -static void bin_data_char (char new_char) -{ - switch (os_data_state) { - case 0: /* data */ - *os_data_addr++ = new_char; - --os_data_count; - break; - } -} -static void set_kerm_bin_mode (unsigned long *addr) -{ - bin_start_address = (char *) addr; - os_data_init = bin_data_init; - os_data_char = bin_data_char; -} - - -/* k_data_* simply handles the kermit escape translations */ -static int k_data_escape, k_data_escape_saved; -void k_data_init (void) -{ - k_data_escape = 0; - os_data_init (); -} -void k_data_save (void) -{ - k_data_escape_saved = k_data_escape; - os_data_save (); -} -void k_data_restore (void) -{ - k_data_escape = k_data_escape_saved; - os_data_restore (); -} -void k_data_char (char new_char) -{ - if (k_data_escape) { - /* last char was escape - translate this character */ - os_data_char (ktrans (new_char)); - k_data_escape = 0; - } else { - if (new_char == his_quote) { - /* this char is escape - remember */ - k_data_escape = 1; - } else { - /* otherwise send this char as-is */ - os_data_char (new_char); - } - } -} - -#define SEND_DATA_SIZE 20 -char send_parms[SEND_DATA_SIZE]; -char *send_ptr; - -/* handle_send_packet interprits the protocol info and builds and - sends an appropriate ack for what we can do */ -void handle_send_packet (int n) -{ - int length = 3; - int bytes; - - /* initialize some protocol parameters */ - his_eol = END_CHAR; /* default end of line character */ - his_pad_count = 0; - his_pad_char = '\0'; - his_quote = K_ESCAPE; - - /* ignore last character if it filled the buffer */ - if (send_ptr == &send_parms[SEND_DATA_SIZE - 1]) - --send_ptr; - bytes = send_ptr - send_parms; /* how many bytes we'll process */ - do { - if (bytes-- <= 0) - break; - /* handle MAXL - max length */ - /* ignore what he says - most I'll take (here) is 94 */ - a_b[++length] = tochar (94); - if (bytes-- <= 0) - break; - /* handle TIME - time you should wait for my packets */ - /* ignore what he says - don't wait for my ack longer than 1 second */ - a_b[++length] = tochar (1); - if (bytes-- <= 0) - break; - /* handle NPAD - number of pad chars I need */ - /* remember what he says - I need none */ - his_pad_count = untochar (send_parms[2]); - a_b[++length] = tochar (0); - if (bytes-- <= 0) - break; - /* handle PADC - pad chars I need */ - /* remember what he says - I need none */ - his_pad_char = ktrans (send_parms[3]); - a_b[++length] = 0x40; /* He should ignore this */ - if (bytes-- <= 0) - break; - /* handle EOL - end of line he needs */ - /* remember what he says - I need CR */ - his_eol = untochar (send_parms[4]); - a_b[++length] = tochar (END_CHAR); - if (bytes-- <= 0) - break; - /* handle QCTL - quote control char he'll use */ - /* remember what he says - I'll use '#' */ - his_quote = send_parms[5]; - a_b[++length] = '#'; - if (bytes-- <= 0) - break; - /* handle QBIN - 8-th bit prefixing */ - /* ignore what he says - I refuse */ - a_b[++length] = 'N'; - if (bytes-- <= 0) - break; - /* handle CHKT - the clock check type */ - /* ignore what he says - I do type 1 (for now) */ - a_b[++length] = '1'; - if (bytes-- <= 0) - break; - /* handle REPT - the repeat prefix */ - /* ignore what he says - I refuse (for now) */ - a_b[++length] = 'N'; - if (bytes-- <= 0) - break; - /* handle CAPAS - the capabilities mask */ - /* ignore what he says - I only do long packets - I don't do windows */ - a_b[++length] = tochar (2); /* only long packets */ - a_b[++length] = tochar (0); /* no windows */ - a_b[++length] = tochar (94); /* large packet msb */ - a_b[++length] = tochar (94); /* large packet lsb */ - } while (0); - - a_b[0] = START_CHAR; - a_b[1] = tochar (length); - a_b[2] = tochar (n); - a_b[3] = ACK_TYPE; - a_b[++length] = '\0'; - a_b[length] = tochar (chk1 (&a_b[1])); - a_b[++length] = his_eol; - a_b[++length] = '\0'; - s1_sendpacket (a_b); -} - -/* k_recv receives a OS Open image file over kermit line */ -static int k_recv (void) -{ - char new_char; - char k_state, k_state_saved; - int sum; - int done; - int length; - int n, last_n; - int z = 0; - int len_lo, len_hi; - - /* initialize some protocol parameters */ - his_eol = END_CHAR; /* default end of line character */ - his_pad_count = 0; - his_pad_char = '\0'; - his_quote = K_ESCAPE; - - /* initialize the k_recv and k_data state machine */ - done = 0; - k_state = 0; - k_data_init (); - k_state_saved = k_state; - k_data_save (); - n = 0; /* just to get rid of a warning */ - last_n = -1; - - /* expect this "type" sequence (but don't check): - S: send initiate - F: file header - D: data (multiple) - Z: end of file - B: break transmission - */ - - /* enter main loop */ - while (!done) { - /* set the send packet pointer to begining of send packet parms */ - send_ptr = send_parms; - - /* With each packet, start summing the bytes starting with the length. - Save the current sequence number. - Note the type of the packet. - If a character less than SPACE (0x20) is received - error. - */ - -#if 0 - /* OLD CODE, Prior to checking sequence numbers */ - /* first have all state machines save current states */ - k_state_saved = k_state; - k_data_save (); -#endif - - /* get a packet */ - /* wait for the starting character or ^C */ - for (;;) { - switch (serial_getc ()) { - case START_CHAR: /* start packet */ - goto START; - case ETX_CHAR: /* ^C waiting for packet */ - return (0); - default: - ; - } - } -START: - /* get length of packet */ - sum = 0; - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - length = untochar (new_char); - /* get sequence number */ - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - n = untochar (new_char); - --length; - - /* NEW CODE - check sequence numbers for retried packets */ - /* Note - this new code assumes that the sequence number is correctly - * received. Handling an invalid sequence number adds another layer - * of complexity that may not be needed - yet! At this time, I'm hoping - * that I don't need to buffer the incoming data packets and can write - * the data into memory in real time. - */ - if (n == last_n) { - /* same sequence number, restore the previous state */ - k_state = k_state_saved; - k_data_restore (); - } else { - /* new sequence number, checkpoint the download */ - last_n = n; - k_state_saved = k_state; - k_data_save (); - } - /* END NEW CODE */ - - /* get packet type */ - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - k_state = new_char; - --length; - /* check for extended length */ - if (length == -2) { - /* (length byte was 0, decremented twice) */ - /* get the two length bytes */ - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - len_hi = untochar (new_char); - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - len_lo = untochar (new_char); - length = len_hi * 95 + len_lo; - /* check header checksum */ - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - if (new_char != tochar ((sum + ((sum >> 6) & 0x03)) & 0x3f)) - goto packet_error; - sum += new_char & 0xff; -/* --length; */ /* new length includes only data and block check to come */ - } - /* bring in rest of packet */ - while (length > 1) { - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - --length; - if (k_state == DATA_TYPE) { - /* pass on the data if this is a data packet */ - k_data_char (new_char); - } else if (k_state == SEND_TYPE) { - /* save send pack in buffer as is */ - *send_ptr++ = new_char; - /* if too much data, back off the pointer */ - if (send_ptr >= &send_parms[SEND_DATA_SIZE]) - --send_ptr; - } - } - /* get and validate checksum character */ - new_char = serial_getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - if (new_char != tochar ((sum + ((sum >> 6) & 0x03)) & 0x3f)) - goto packet_error; - /* get END_CHAR */ - new_char = serial_getc (); - if (new_char != END_CHAR) { - packet_error: - /* restore state machines */ - k_state = k_state_saved; - k_data_restore (); - /* send a negative acknowledge packet in */ - send_nack (n); - } else if (k_state == SEND_TYPE) { - /* crack the protocol parms, build an appropriate ack packet */ - handle_send_packet (n); - } else { - /* send simple acknowledge packet in */ - send_ack (n); - /* quit if end of transmission */ - if (k_state == BREAK_TYPE) - done = 1; - } - ++z; - } - return ((ulong) os_data_addr - (ulong) bin_start_address); -} -#endif /* CFG_CMD_LOADB */ -#if (CONFIG_COMMANDS & CFG_CMD_HWFLOW) -int do_hwflow (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - extern int hwflow_onoff(int); - - if (argc == 2) { - if (strcmp(argv[1], "off") == 0) - hwflow_onoff(-1); - else - if (strcmp(argv[1], "on") == 0) - hwflow_onoff(1); - else - printf("Usage: %s\n", cmdtp->usage); - } - printf("RTS/CTS hardware flow control: %s\n", hwflow_onoff(0) ? "on" : "off"); - return 0; -} -#endif /* CFG_CMD_HWFLOW */ +cmd_tbl_t U_BOOT_CMD(RESET) = MK_CMD_ENTRY( + "reset", 1, 0, do_reset, + "reset - Perform RESET of the CPU\n", + NULL +); -- cgit