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-rw-r--r--contrib/3c90xutil/cromutil.c259
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diff --git a/contrib/3c90xutil/cromutil.c b/contrib/3c90xutil/cromutil.c
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--- a/contrib/3c90xutil/cromutil.c
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-/*
- * JLdL 21Jun04.
- *
- * cromutil.c
- *
- * Perform various control operations on the flash EEPROM of
- * _ the 3COM models 3C905C or 3C905CX network cards, in order
- * _ to write a boot program such as Etherboot into it.
- *
- * This program is meant for the Linux operating system only,
- * _ and only for the i386 architecture.
- *
- * The flash EEPROM usually used in these cards is the AT49BV512
- * _ chip, which has 512 Kbit (64 KByte). Another possible chip,
- * _ which is equivalent to this one, is the SST39VF512.
- *
- * Added alternative read128 and prog128 commands for cards with
- * _ the SST29EE020 fast page-write (super-)flash EEPROM, which
- * _ has 2 Mbit (256 KByte), and which has to be programmed in
- * _ a 128-byte page mode. NOTE: it seems that the card can
- * _ address only the first half of the memory in this chip,
- * _ so only 128 Kbytes are actually available for use.
- *
- * Added a few informative messages and a detailed help message.
- *
- */
-
-#ifndef __i386__
-# error "This program can't compile or run on non-Intel computers"
-#else
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/io.h>
-#include <string.h>
-
-int main(int argc, char **argv)
-{
- /* Counters. */
- unsigned int i, j, n;
- /* For ROM chips larger than 64 KB, a long integer
- _ is needed for the global byte counter. */
- unsigned long k;
- /* The I/O address of the card. */
- unsigned int ioaddr;
- /* Storage for a byte. */
- unsigned char b;
- /* Storage for a page. */
- unsigned char buf[128];
-
- /* Initialize a few things to avoid compiler warnings. */
- i=0; j=0; n=0; k=0;
-
- /* Verify the command-line parameters; write
- _ out an usage message if needed. */
- if (argc != 3) {
- /* Exactly 2 command line parameters are needed. */
- printf("Usage: ./cromutil ioaddr command [(>|<) file]\n");
- printf(" (try './cromutil 0x0000 help' for details)\n");
- exit(-1);
- }
-
- /* Set the UID to root if possible. */
- setuid(0);
-
- /* Get port-access permissions for in{blw}/out{blw}. */
- if (iopl(3)) {
- perror("iopl()");
- exit(1);
- }
-
- /* Pass the I/O address of the card to a variable. */
- sscanf(argv[1],"%x",&ioaddr);
-
- /* Set the register window to 0. */
- outw(0x800, ioaddr+0xe);
-
- /*
- * Execute the requested command.
- *
- * "id": get and write out the ID numbers.
- */
- if (strcmp(argv[2], "id") == 0) {
- /* Software ID entry command sequence. */
- outl(0x5555, ioaddr+0x4); outb(0xaa, ioaddr+0x8);
- outl(0x2aaa, ioaddr+0x4); outb(0x55, ioaddr+0x8);
- outl(0x5555, ioaddr+0x4); outb(0x90, ioaddr+0x8);
- /* A 10 ms delay is needed. */
- usleep(10000);
- /* Get the manufacturer id. */
- outl(0x0000, ioaddr+0x4);
- printf("Manufacturer ID - %02x\n", inb(ioaddr+0x8));
- /* Get the device id. */
- outl(0x0001, ioaddr+0x4);
- printf("Device ID - %02x\n", inb(ioaddr+0x8));
- /* Software ID exit command sequence. */
- outl(0x5555, ioaddr+0x4); outb(0xaa, ioaddr+0x8);
- outl(0x2aaa, ioaddr+0x4); outb(0x55, ioaddr+0x8);
- outl(0x5555, ioaddr+0x4); outb(0xf0, ioaddr+0x8);
- }
- /*
- * "read": read data from the 512 Kbit ROM.
- */
- else if (strcmp(argv[2], "read") == 0) {
- /* Loop over the whole ROM. */
- for (k = 0; k < 65536; k++) {
- outl(k, ioaddr+0x4);
- b = inb(ioaddr+0x8);
- write(1, &b, 1);
- }
- /* Write out an informative message. */
- perror("Read 65536 bytes from ROM");
- }
- /*
- * "read128": this alternative is for the 2 Mbit ROM.
- */
- else if (strcmp(argv[2], "read128") == 0) {
- /* Loop over the accessible part of the ROM. */
- for (k = 0; k < 131072; k++) {
- outl(k, ioaddr+0x4);
- b = inb(ioaddr+0x8);
- write(1, &b, 1);
- }
- /* Write out an informative message. */
- perror("Read 131072 bytes from ROM");
- }
- /*
- * "erase": erase the ROM contents.
- */
- else if (strcmp(argv[2], "erase") == 0) {
- /* Software chip-erase command sequence. */
- outl(0x5555, ioaddr+0x4); outb(0xaa, ioaddr+0x8);
- outl(0x2aaa, ioaddr+0x4); outb(0x55, ioaddr+0x8);
- outl(0x5555, ioaddr+0x4); outb(0x80, ioaddr+0x8);
- outl(0x5555, ioaddr+0x4); outb(0xaa, ioaddr+0x8);
- outl(0x2aaa, ioaddr+0x4); outb(0x55, ioaddr+0x8);
- outl(0x5555, ioaddr+0x4); outb(0x10, ioaddr+0x8);
- /* Wait a bit. */
- sleep(1);
- /* Write out an informative message. */
- printf("Bios ROM at %04x has been erased: Success\n", ioaddr);
- }
- /*
- * "prog": program the 512 Kbit ROM.
- */
- else if (strcmp(argv[2], "prog") == 0) {
- /* Loop over the bytes in pages, to
- _ allow for a progress report. */
- for (j = 0; j < 512; j++) {
- for (i = 0; i < 128; i++) {
- /* If this program is to run on a diskless node,
- _ must read in the byte _before_ changing the
- _ mode of the chip, or NFS may block. */
- n = read(0, &b, 1);
- /* At EOF exit the inner loop. */
- if (n == 0)
- break;
- if (n < 0) {
- perror("Input File Error");
- exit(-3);
- }
- /* Disable SDP temporarily for programming a byte. */
- outl(0x5555, ioaddr+0x4); outb(0xaa, ioaddr+0x8);
- outl(0x2aaa, ioaddr+0x4); outb(0x55, ioaddr+0x8);
- outl(0x5555, ioaddr+0x4); outb(0xA0, ioaddr+0x8);
- /* Calculate the address of the byte. */
- k=i+128*j;
- /* Program this byte. */
- outl(k, ioaddr+0x4); outb(b, ioaddr+0x8);
- /* Wait for the programming of this byte to complete. */
- while (inb(ioaddr+0x8) != b)
- ;
- }
- /* At EOF exit the outer loop. */
- if (n == 0)
- break;
- /* Write out a progress report. */
- printf("."); fflush(NULL);
- }
- /* Write out an informative message. */
- printf("\nWrote %ld bytes to ROM: Success\n", k);
- }
- /*
- * "prog128": this alternative is for the 2 Mbit ROM.
- */
- else if (strcmp(argv[2], "prog128") == 0) {
- /* Loop over the accessible pages; the card can
- _ access only the first half of the chip. */
- for (j = 0; j < 1024; j++) {
- /* If this program is to run on a diskless node,
- _ must read in the page _before_ changing the
- _ mode of the chip, or NFS may block. */
- n = read(0, buf, 128);
- /* At EOF exit the loop. */
- if (n == 0)
- break;
- if (n < 0) {
- perror("Input File Error");
- exit(-3);
- }
- /* Disable SDP temporarily for programming a page. */
- outl(0x5555, ioaddr+0x4); outb(0xaa, ioaddr+0x8);
- outl(0x2aaa, ioaddr+0x4); outb(0x55, ioaddr+0x8);
- outl(0x5555, ioaddr+0x4); outb(0xA0, ioaddr+0x8);
- /* Loop over the bytes in a page. */
- for (i = 0; i < n; i++) {
- /* Calculate the address of the byte. */
- k=i+128*j;
- /* Program this byte. */
- outl(k, ioaddr+0x4); outb(buf[i], ioaddr+0x8);
- }
- /* Wait for the programming of this page to complete. */
- while (inb(ioaddr+0x8) != buf[i-1])
- ;
- /* Write out a progress report. */
- printf("."); fflush(NULL);
- }
- /* Write out an informative message. */
- printf("\nWrote %d pages to ROM: Success\n", j);
- }
- /*
- * "help": write out a detailed help message.
- */
- else if (strcmp(argv[2], "help") == 0) {
- printf("This utility can be used to write data, usually boot loaders\n");
- printf(" such as Etherboot, to the flash EEPROM of the 3COM models\n");
- printf(" 3C905C and 3C905CX network cards. You use it like this:\n");
- printf(" ./cromutil ioaddr command [(>|<) file]\n");
- printf("Here ioaddr is the hexadecimal I/O address of the card, such\n");
- printf(" as 0xA123, in some cases you need input/output redirection\n");
- printf(" from/to a file, and the command can be one of these:\n");
- printf(" id get the ID numbers of the card;\n");
- printf(" read > file read the contents of the ROM into a file;\n");
- printf(" read128 > file read the contents of the ROM into a file;\n");
- printf(" erase erase the whole ROM to the 1 state;\n");
- printf(" prog < file write the contents of a file into the ROM;\n");
- printf(" prog128 < file write the contents of a file into the ROM.\n");
- printf("You can get the I/O address of the card using the commands\n");
- printf(" 'lspci -v', 'cat /proc/pci', or 'dmesg | grep -i 3C905C'.\n");
- printf("The read and prog commands are to be used if the card has a\n");
- printf(" traditional 512 Kb (64 KB) flash EEPROM chip, such as:\n");
- printf(" | AT49BV512 | SST39VF512 |\n");
- printf("The read128 and prog128 versions are for cards with a 2 Mb\n");
- printf(" (128 KB usable) page-write flash EEPROM chip, such as:\n");
- printf(" | SST29EE020 |\n");
- }
- /*
- * Write out the usage message if an unknown command is used.
- */
- else {
- printf("Usage: ./cromutil ioaddr command [(>|<) file]\n");
- printf("(try './cromutil 0x0000 help' for details)\n");
- exit(-1);
- }
- return 0;
-}
-
-#endif /* __i386__ */
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