+++ /dev/null
-/* smm-open-ich2.c
- * SMRAM control utility for ICH2 southbridge
- * NetWatch system management mode administration console
- *
- * Copyright (c) 2008 Jacob Potter and Joshua Wise. All rights reserved.
- * This program is free software; you can redistribute and/or modify it under
- * the terms found in the file LICENSE in the root of this source tree.
- *
- */
-
-
-#include "reg-82815.h"
-#include <unistd.h>
-#include <getopt.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-/***********************************************************************
- * DEPRECATED DEPRECATED DEPRECATED DEPRECATED DEPRECATED
- *
- * This should be replaced by ../util/smram-ich2 once it's verified to work properly.
- */
-
-unsigned long memsz[] = {
- 0, // 0
- 32*1024*1024, // 1
- 32*1024*1024, // 2
- 48*1024*1024, // 3
- 64*1024*1024, // 4
- 64*1024*1024, // 5
- 96*1024*1024, // 6
- 128*1024*1024, // 7
- 128*1024*1024, // 8
- 128*1024*1024, // 9
- 128*1024*1024, // A
- 192*1024*1024, // B
- 256*1024*1024, // C
- 256*1024*1024, // D
- 256*1024*1024, // E
- 512*1024*1024 // F
-};
-
-void dump(unsigned char smramc, unsigned char drp, unsigned char drp2) {
-
- unsigned int tom = 0;
- int usmm, lsmm;
-
- printf("SMRAMC: %02x\n", smramc);
-
- tom += memsz[drp & 0xF];
- tom += memsz[drp >> 4];
- tom += memsz[drp2 & 0xF];
-
- printf("Top of DRAM: %08x\n", tom);
-
- usmm = (smramc >> 4) & 0x3;
- lsmm = (smramc >> 2) & 0x3;
-
- switch (usmm)
- {
- case 0:
- printf("TSEG and HSEG both off\n");
- break;
- case 1:
- printf("TSEG off, HSEG %s\n", lsmm ? "off" : "on");
- break;
- case 2:
- printf("TSEG 512KB (%08x - %08x), HSEG %s\n",
- tom - 512 * 1024, tom - 1, lsmm ? "off" : "on");
- break;
- case 3:
- printf("TSEG 1MB (%08x - %08x), HSEG %s\n",
- tom - 1 * 1024 * 1024, tom - 1, lsmm ? "off" : "on");
- break;
- }
-
- switch (lsmm)
- {
- case 0:
- printf("ABSEG disabled\n");
- break;
- case 1:
- printf("ABSEG enabled as system RAM\n");
- break;
- case 2:
- printf("ABSEG enabled for SMM code only\n");
- break;
- case 3:
- printf("ABSEG enabled for both SMM code and data\n");
- break;
- }
-}
-
-static struct option longopts[] = {
- { "open", no_argument, NULL, 'o' },
- { "close", no_argument, NULL, 'c' },
- { "smram", no_argument, NULL, 's' },
- { "dump", no_argument, NULL, 'd' },
- { NULL, 0, NULL, 0 }
-};
-
-#define OP_DUMP 1
-#define OP_SET 2
-
-void usage(int argc, char **argv)
-{
- printf("Usage: %s [ --dump ] [ --open | --close | --smram=value ]\n",
- argv[0]);
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- unsigned char smramc, drp, drp2;
-
- if (geteuid() != 0)
- {
- printf("This program must be run as root, dumbass.\n");
- return 1;
- }
-
- smramc = pci_read8(0, 0, 0, SMRAMC);
- drp = pci_read8(0, 0, 0, DRP);
- drp2 = pci_read8(0, 0, 0, DRP2);
-
- if (smramc & SMRAMC_LOCK)
- {
- printf("SMRAM is locked, cannot load anything :-(\n");
- return 1;
- }
-
- int ch;
- int op = 0;
- int new_smramc = smramc;
-
- while ((ch = getopt_long(argc, argv, "ocsd:", longopts, NULL)) != -1)
- {
- switch (ch)
- {
- case 's':
- if (op & OP_SET) usage(argc, argv);
- op |= OP_SET;
- new_smramc = strtoul(optarg, 0, 0);
- break;
- case 'o':
- if (op & OP_SET) usage(argc, argv);
- op |= OP_SET;
- /* Set LSMM to 01 (ABseg = system RAM) */
- new_smramc = (smramc & 0xF0) | 0x04;
- break;
- case 'c':
- if (op & OP_SET) usage(argc, argv);
- op |= OP_SET;
- /* Set LSMM to 11 (ABseg = SMM RAM) */
- new_smramc = (smramc & 0xF0) | 0x0C;
- break;
- case 'd':
- op |= OP_DUMP;
- break;
- default:
- usage(argc, argv);
- }
- }
-
- if (!op) usage(argc, argv);
-
- if (op & OP_DUMP)
- {
- dump(smramc, drp, drp2);
- }
-
- if (op & OP_SET)
- {
- pci_write8(0, 0, 0, SMRAMC, new_smramc);
- if (op & OP_DUMP)
- {
- printf("SMRAM set to 0x%02x\n", new_smramc);
- }
- }
-
- return 0;
-}
git.joshuawise.com / netwatch.git / blobdiff