2 * dump_psb. (c) 2004, Dave Jones, Red Hat Inc.
3 * Licensed under the GPL v2.
17 #define LEN (0x100000 - 0xc0000)
18 #define OFFSET (0xc0000)
21 #define __packed __attribute((packed))
26 static const int fid_to_mult[32] = {
27 110, 115, 120, 125, 50, 55, 60, 65,
28 70, 75, 80, 85, 90, 95, 100, 105,
29 30, 190, 40, 200, 130, 135, 140, 210,
30 150, 225, 160, 165, 170, 180, -1, -1,
33 static const int vid_to_voltage[32] = {
34 2000, 1950, 1900, 1850, 1800, 1750, 1700, 1650,
35 1600, 1550, 1500, 1450, 1400, 1350, 1300, 0,
36 1275, 1250, 1225, 1200, 1175, 1150, 1125, 1100,
37 1075, 1050, 1024, 1000, 975, 950, 925, 0,
61 decode_pst(char *p, int npstates)
66 for (i = 0; i < npstates; ++i) {
69 freq = 100 * fid_to_mult[fid] * fsb;
71 printf(" %2d %8dkHz FID %02x (%2d.%01d) VID %02x (%4dmV)\n",
74 fid, fid_to_mult[fid]/10, fid_to_mult[fid]%10,
75 vid, vid_to_voltage[vid]);
82 void decode_psb(char *p, int numpst)
85 struct psb_header *psb;
86 struct pst_header *pst;
88 psb = (struct psb_header*) p;
90 if (psb->version != 0x12)
93 printf("PSB version: %hhx flags: %hhx settling time %hhuus res1 %hhx num pst %hhu\n",
99 sgtc = psb->settlingtime * 100;
104 p = ((char *) psb) + sizeof(struct psb_header);
107 numpst = psb->numpst;
109 printf("Overriding number of pst :%d\n", numpst);
111 for (i = 0; i < numpst; i++) {
112 pst = (struct pst_header*) p;
115 if (relevant!= pst->cpuid)
119 printf(" PST %d cpuid %.3x fsb %hhu mfid %hhx svid %hhx numberstates %hhu\n",
128 decode_pst(p + sizeof(struct pst_header), pst->numpstates);
131 p += sizeof(struct pst_header) + 2*pst->numpstates;
136 static struct option info_opts[] = {
137 {.name = "numpst", .has_arg=no_argument, .flag=NULL, .val='n'},
140 void print_help(void)
142 printf ("Usage: dump_psb [options]\n");
143 printf ("Options:\n");
144 printf (" -n, --numpst Set number of PST tables to scan\n");
145 printf (" -r, --relevant Only display PSTs relevant to cpuid N\n");
149 main(int argc, char *argv[])
158 ret = getopt_long(argc, argv, "hr:n:", info_opts, NULL);
166 relevant = strtol(optarg, NULL, 16);
169 numpst = strtol(optarg, NULL, 10);
178 fd = open("/dev/mem", O_RDONLY);
180 printf ("Couldn't open /dev/mem. Are you root?\n");
184 mem = mmap(mem, 0x100000 - 0xc0000, PROT_READ, MAP_SHARED, fd, 0xc0000);
187 for (p = mem; p - mem < LEN; p+=16) {
188 if (memcmp(p, "AMDK7PNOW!", 10) == 0) {
189 decode_psb(p, numpst);