diff options
Diffstat (limited to 'uart-loader/common/cmd_load.c')
| -rw-r--r-- | uart-loader/common/cmd_load.c | 841 |
1 files changed, 0 insertions, 841 deletions
diff --git a/uart-loader/common/cmd_load.c b/uart-loader/common/cmd_load.c deleted file mode 100644 index 6bd07e4..0000000 --- a/uart-loader/common/cmd_load.c +++ /dev/null @@ -1,841 +0,0 @@ -/* - * (C) Copyright 2000-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -/* - * Serial up- and download support - */ -#include <common.h> -#include <asm/arch/mux.h> - -#define putc serial_putc -#define tstc serial_tstc - -/******************************************************* - * Routine: delay - * Description: spinning delay to use before udelay works - ******************************************************/ -static inline void delay(unsigned long loops) -{ - __asm__ volatile ("1:\n" "subs %0, %1, #1\n" - "bne 1b":"=r" (loops):"0"(loops)); -} -static inline void udelay(unsigned long us) -{ - delay(us * 200); /* approximate */ -} - -static gpio_t *blocks[]={ // GPIO1 .. 6 - OMAP34XX_GPIO1_BASE, - OMAP34XX_GPIO2_BASE, - OMAP34XX_GPIO3_BASE, - OMAP34XX_GPIO4_BASE, - OMAP34XX_GPIO5_BASE, - OMAP34XX_GPIO6_BASE -}; - -static inline int gpio_get(int n) -{ - int bit=n % 32; - gpio_t *base=blocks[n/32]; - return (base->datain >> bit)&1; -} - -static inline int gpio_is_input(int n) -{ // geht nicht richtig - int bit=n % 32; - gpio_t *base=blocks[n/32]; - return (base->oe >> bit)&1; -} - -#ifdef CFG_CMD_FAT -extern void * memcpy(void * dest,const void *src,size_t count); -#else -void * memcpy(void * dest,const void *src,size_t count) -{ - char *tmp = (char *) dest, *s = (char *) src; - - while (count--) - *tmp++ = *s++; - - return dest; -} -#endif - -/* -------------------------------------------------------------------- */ - -#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 strcmp(char *s1, char *s2) -{ - while(*s1 == *s2) { - if(*s1 == 0) - return 0; // same - s1++; - s2++; - } - return *s1 > *s2?1:-1; -} - -long xtol(char *s) -{ - long val=0; - while(1) - { - if(*s >= '0' && *s <= '9') - val=16*val+(*s++-'0'); - else if(*s >= 'A' && *s <= 'F') - val=16*val+(*s++-'A'+10); - else if(*s >= 'a' && *s <= 'f') - val=16*val+(*s++-'a'+10); - else - break; - } - return val; -} - -static char *addr=(char *) CFG_LOADADDR; -static char line[100]; -static char *argv[10]; - -#define __raw_readl(a) (*(volatile unsigned int *)(a)) -#define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v)) -#define __raw_readw(a) (*(volatile unsigned short *)(a)) -#define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v)) - -#define MUX_VAL(OFFSET,VALUE)\ -__raw_writew((VALUE), OMAP34XX_CTRL_BASE + (OFFSET)); - -#define CP(x) (CONTROL_PADCONF_##x) - -void testfn(void) -{ // code can be copied to SDRAM (assuming that it is position-independent!) - int i; - for(i=0; i<10; i++) { - if(i & 1) - MUX_VAL(CP(GPMC_nCS6), (IEN | PTD | EN | M4)) /*GPT_PWM11/GPIO57*/ - else - MUX_VAL(CP(GPMC_nCS6), (IEN | PTU | EN | M4)) /*GPT_PWM11/GPIO57*/ - udelay(500*1000); - } -} - -int do_comand_line(void) -{ // add testing code here - printf ("Welcome to uart-loader\n"); - printf (" c - run test code in RAM\n"); - printf (" x [addr] - execute\n"); - printf (" l - loop hello world\n"); - printf (" ram - fill ram with data pattern\n"); - printf (" a addr - set address\n"); - printf (" r [size] - read bytes\n"); - printf (" rl [size] - read long words\n"); - printf (" f [value [size]] - write bytes\n"); - printf (" bl - blink backlight\n"); - printf (" g - show GPIOs\n"); - printf (" m - show PinMux\n"); - return 0; - while(1) { - char *c; - int argc=0; - int pos=0; - printf ("$ "); - while(1) { - line[pos]=getc(); - switch(line[pos]) { - case '\b': - case 0x7f: - if(pos > 0) { - putc('\b'); - pos--; - } - continue; - case 0: - case '\n': - continue; // ignore - case '\r': - break; // command - default: - if(pos < sizeof(line)/sizeof(line[0])) { - putc(line[pos]); // echo - pos++; - } - continue; - } - line[pos]=0; - printf("\n"); - break; - } - c=line; - while(argc < sizeof(argv)/sizeof(argv[0])) { - while (*c == ' ' || *c == '\t') - c++; - if(*c == 0) - break; - argv[argc]=c; - while(*c != 0 && *c != '\t' && *c != ' ') - c++; - argc++; - if(*c == 0) - break; - *c=0; // substitute - c++; - } - if(argc == 0) - continue; // empty line -// printf("argc=%d argv[0]=%s\n", argc, argv[0]); - if(strcmp(argv[0], "c") == 0) { // c - copy test function to SDRAM and execute - void (*fn)(void) = &testfn; - size_t cnt = 0x1000; - addr=(char *) CFG_LOADADDR; - printf("%08x (%d) --> %08x\n", fn, cnt, addr); - memcpy(addr, fn, cnt); - (*fn)(); - } - else if(strcmp(argv[0], "x") == 0) { // x [addr] - execute code - void (*fn)(void) = addr; - if(argc > 1) - fn = (void *) xtol(argv[1]); - (*fn)(); - } - else if(strcmp(argv[0], "l") == 0) { // l - loop - int d=1; - while(1) - printf ("Welcome to uart-loader (%d)\n", d++), udelay(500*1000); - } - else if(strcmp(argv[0], "ram") == 0) { - int val=0x55; - if(argc == 2) - val=xtol(argv[1]); - for(addr=(char *) CFG_LOADADDR; addr < 256+(char *) CFG_LOADADDR; addr++) { - *addr=val++; - } - addr=(char *) CFG_LOADADDR; - } - else if(strcmp(argv[0], "a") == 0) { // a [addr] - if(argc > 1) - addr=(char *) xtol(argv[1]); - printf("%08x\n", addr); - } - else if(strcmp(argv[0], "r") == 0) { // r [size] - int i; - int n=1; - if(argc > 1) - n=xtol(argv[1]); - printf("%08x:", addr); - for(i=0; i<n; i++) { - printf(" %02x", *addr++); - if(i % 16 == 15 && i != n-1) - printf("\n%08x:", addr); - } - printf("\n"); - } - else if(strcmp(argv[0], "rl") == 0) { // rl [size] - int i; - int n=1; - if(argc > 1) - n=xtol(argv[1]); - printf("%08x:", addr); - for(i=0; i<n; i++) { - printf(" %08x", *(volatile unsigned int *) addr); - addr+=4; - if(i % 4 == 3 && i != n-1) - printf("\n%08x:", addr); - } - printf("\n"); - } - else if(strcmp(argv[0], "f") == 0) { // f [value [size]] - int i; - int n=1; - int val=0x55; - if(argc > 1) - val=xtol(argv[1]); - if(argc > 2) - n=xtol(argv[2]); - for(i=0; i<n; i++) - addr[i]=val; - } -#if 0 - else if(strcmp(argv[0], "clk") == 0) { // clk - extern u32 osc_clk; - printf("clk=%d\n", osc_clk); - } -#endif - else if(strcmp(argv[0], "bl") == 0) { // blink backlight - int i; - for(i=0; i<10; i++) { - if(i & 1) - MUX_VAL(CP(GPMC_nCS6), (IEN | PTD | EN | M4)) /*GPT_PWM11/GPIO57*/ - else - MUX_VAL(CP(GPMC_nCS6), (IEN | PTU | EN | M4)) /*GPT_PWM11/GPIO57*/ - udelay(500*1000); - } - } - else if(strcmp(argv[0], "g") == 0) { // g - read GPIO - unsigned int i; // gcc compilation has problems with signed division and modulo! - int n=32*sizeof(blocks)/sizeof(blocks[0]); - printf("GPIO1 data: %08x\n", ((gpio_t *) OMAP34XX_GPIO1_BASE) -> datain); - printf("%03d:", 0); - for(i=0; i<n; i++) { - printf(" %c%d", (gpio_is_input(i)?' ':'o'), gpio_get(i)); - if(i % 10 == 9 && i != n-1) - printf("\n%03d:", i); - } - printf("\n"); - - } - else if(strcmp(argv[0], "m") == 0) { // m - read pinmux - int cols=0; - addr=0x48002030; - printf("%08x", addr); - while(addr <= 0x480025F8) { - unsigned mux=*(unsigned *) addr; - int i; - for(i=1; i <= 2; i++) { - printf(" %c%d%c", (mux&8)?((mux&0x10?'U':'D')):' ', (mux&7), (mux&0x100)?'I':'O'); - mux >>= 16; - } - if(addr == 0x48002264) { - addr=0x480025DC; - printf("\n%08x", addr); - cols=0; - } - else { - addr+=4; - if(++cols == 8) - printf("\n%08x", addr), cols=0; - } - } - printf("\n"); - } - else - printf("uart-loader unknown command: %s\n", argv[0]); - } - return 0; -} - -int do_load_serial_bin (ulong offset, int baudrate) -{ - ulong addr; - int rcode = 0; - - printf ("## Ready for binary (kermit) download " - "to 0x%08lX at %d bps...\n", - offset, - baudrate); - addr = load_serial_bin (offset); - - udelay(3*1000*1000); - - if (addr == ~0) { - printf ("## Binary (kermit) download aborted\n"); - rcode = 1; - } else { - printf ("## Start Addr = 0x%08lX\n", addr); -#if 0 - udelay(3*1000*1000); - { - int i; - int n=256; - char *a=(char *) addr; - printf("%08x:", a); - for(i=0; i<n; i++) { - printf(" %02x", *a++); - if(i % 16 == 15 && i != n-1) - printf("\n%08x:", a+1); - } - printf("\n"); - } -#endif - } - return rcode; -} - - -static ulong load_serial_bin (ulong offset) -{ - int size, i; - - 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<1000; ++i) { - if (tstc()) { - (void) getc(); - } - udelay(1000); - } - - udelay(5*1000*1000); - printf("## Total Size = 0x%08x = %d Bytes\n", size, size); - - return offset; -} - -void send_pad (void) -{ - int count = his_pad_count; - - while (count-- > 0) - 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); -} - -void s1_sendpacket (char *packet) -{ - send_pad (); - while (*packet) { - putc (*packet++); - } -} - -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 (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 = getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - length = untochar (new_char); - /* get sequence number */ - new_char = 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 = 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 = getc (); - if ((new_char & 0xE0) == 0) - goto packet_error; - sum += new_char & 0xff; - len_hi = untochar (new_char); - new_char = 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 = 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 = 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 = 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 = 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); -} |