FreeCalypso > hg > fc-usbser-tools
view duart28/eeprom_rd.c @ 105:1e820ed0904e
Installed-binaries: list of binaries installed by this package
I am establishing a new convention for all FreeCalypso tools, across
different packages and source repositories: each FC tools package
will have a file name Installed-binaries listing all user-invokable
binaries that package installs in /opt/freecalypso/bin. These files
are to serve as an aid to users and distro package maintainers who
prefer to not add /opt/freecalypso/bin to their PATH. The alternative
to adding this directory to PATH is to create a symlink for every
installed binary in some standard location such as /usr/bin or
/usr/local/bin, pointing to the actual binary in /opt/freecalypso/bin;
having a list of all FC-installed binaries in a standardized format
will allow this process to be automated.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Fri, 29 Sep 2023 19:42:53 +0000 |
| parents | 8de3891460db |
| children |
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/* * This module implements the steps of reading and validating the starting * EEPROM content. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <usb.h> #include "../libftmini/eeprom_func.h" u_short eeprom[64]; void read_eeprom(usbh) usb_dev_handle *usbh; { unsigned n; for (n = 0; n < 64; n++) eeprom[n] = ftmini_read_eeprom_loc(usbh, n); } static void verify_nonblank() { unsigned n; for (n = 0; n < 64; n++) { if (eeprom[n] != 0xFFFF) return; } fprintf(stderr, "error: EEPROM is blank (erased?)\n"); exit(1); } static void verify_eeprom_chksum() { u_short chksum = 0xAAAA; unsigned n; for (n = 0; n < 64; n++) { chksum ^= eeprom[n]; chksum = (chksum << 1) | (chksum >> 15); } if (chksum == 0) return; fprintf(stderr, "error: EEPROM checksum is wrong\n"); exit(1); } static int check_req_match() { if (eeprom[0] != 0x0808) return 0; if (eeprom[1] != 0x0403) return 0; if (eeprom[2] != 0x6010 && eeprom[2] != 0x7152) return 0; if (eeprom[3] != 0x0500) return 0; if (eeprom[4] != 0x3280) return 0; if (eeprom[5] != 0x0000 && eeprom[5] != 0x0008) return 0; if (eeprom[6] != 0x0200) return 0; if (eeprom[7] != 0x1896) return 0; if (eeprom[8] != 0x12AE) return 0; if (eeprom[10] != 0x0046) return 0; if (eeprom[11] != 0x0318) return 0; if (eeprom[12] != 'F') return 0; if (eeprom[13] != 'r') return 0; if (eeprom[14] != 'e') return 0; if (eeprom[15] != 'e') return 0; if (eeprom[16] != 'C') return 0; if (eeprom[17] != 'a') return 0; if (eeprom[18] != 'l') return 0; if (eeprom[19] != 'y') return 0; if (eeprom[20] != 'p') return 0; if (eeprom[21] != 's') return 0; if (eeprom[22] != 'o') return 0; if (eeprom[23] != 0x0312) return 0; if (eeprom[24] != 'D') return 0; if (eeprom[25] != 'U') return 0; if (eeprom[26] != 'A') return 0; if (eeprom[27] != 'R') return 0; if (eeprom[28] != 'T') return 0; if (eeprom[29] != '2') return 0; if (eeprom[30] != '8') return 0; if (eeprom[31] != 'C' && eeprom[31] != 'S') return 0; return 1; } analyze_eeprom() { verify_nonblank(); verify_eeprom_chksum(); if (!check_req_match()) { fprintf(stderr, "error: EEPROM content does not match FC DUART28\n"); exit(1); } if (eeprom[2] == 0x7152 && eeprom[31] == 'C') { printf("EEPROM is programmed for DUART28C\n"); return 'C'; } if (eeprom[2] == 0x6010 && eeprom[31] == 'S') { printf("EEPROM is programmed for DUART28S\n"); return 'S'; } printf("EEPROM is inconsistent between C and S configs!\n"); return '?'; }