util/superiotool/infineon.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include "superiotool.h"
   4
   5 #define DEVICE_ID_REG           0x20
   6 #define DEVICE_REV_REG          0x21
   7
   8 static const struct superio_registers reg_table[] = {
   9         {0x0b, "SLB9635TT12", {
  10                 {NOLDN, NULL,
  11                         {0x20,0x21,0x26,0x27,EOT},
  12                         {0x0b,0x00,NANA,NANA,EOT}},
  13                 {0, NULL,
  14                         {0x30,0x38,0x60,0x61,0x70,0x71,0xf1,0xf2,0xf3,0xf4,0xf5,EOT},
  15                         {0x00,0x00,NANA,NANA,0x00,0x02,0xd1,0x15,0x0b,0x00,NANA,EOT}},
  16                 {EOT}}},
  17         {EOT}
  18 };
  19
  20 /* same as some SMSC */
  21 static void enter_conf_mode_infineon(uint16_t port)
  22 {
  23         OUTB(0x55, port);
  24 }
  25
  26 static void exit_conf_mode_infineon(uint16_t port)
  27 {
  28         OUTB(0xaa, port);
  29 }
  30
  31 void probe_idregs_infineon(uint16_t port)
  32 {
  33         uint8_t rev, devid;
  34
  35         probing_for("Infineon", "", port);
  36
  37         enter_conf_mode_infineon(port);
  38
  39         devid = regval(port, DEVICE_ID_REG);
  40         rev = regval(port, DEVICE_REV_REG);
  41
  42         if (superio_unknown(reg_table, devid)) {
  43                 if (verbose)
  44                         printf(NOTFOUND "id=0x%02x, rev=0x%02x\n", devid, rev);
  45                 exit_conf_mode_infineon(port);
  46                 return;
  47         }
  48
  49         /* Attempt to prevent false matches on SMSC FDC37N972, see smsc.c */
  50         if (((regval(port, 0x27)<<8)|regval(port, 0x26)) != port) {
  51                 if (verbose)
  52                         printf(NOTFOUND "id=0x%02x, rev=0x%02x\n", devid, rev);
  53                 exit_conf_mode_infineon(port);
  54                 return;
  55         }
  56
  57         printf("Found Infineon %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
  58                get_superio_name(reg_table, devid), devid, rev, port);
  59         chip_found = 1;
  60
  61         dump_superio("Infineon", reg_table, port, devid, LDN_SEL);
  62
  63         exit_conf_mode_infineon(port);
  64 }
  65
  66 void print_infineon_chips(void)
  67 {
  68         print_vendor_chips("Infineon", reg_table);
  69 }