void pcr_or8(uint8_t pid, uint16_t offset, uint8_t ordata)
{
uint8_t data8;
data8 = pcr_read8(pid, offset);
data8 |= ordata;
pcr_write8(pid, offset, data8);
}
void smihandler_southbridge_monitor(
const struct smm_save_state_ops *save_state_ops)
{
#define IOTRAP(x) (trap_sts & (1 << x))
u32 trap_cycle;
u32 data, mask = 0;
u8 trap_sts;
int i;
global_nvs_t *gnvs = smm_get_gnvs();
/* TRSR - Trap Status Register */
trap_sts = pcr_read8(PID_PSTH, PCR_PSTH_TRPST);
/* Clear trap(s) in TRSR */
pcr_write8(PID_PSTH, PCR_PSTH_TRPST, trap_sts);
/* TRPC - Trapped cycle */
trap_cycle = pcr_read32(PID_PSTH, PCR_PSTH_TRPC);
for (i = 16; i < 20; i++) {
if (trap_cycle & (1 << i))
mask |= (0xff << ((i - 16) << 2));
}
/* IOTRAP(3) SMI function call */
if (IOTRAP(3)) {
if (gnvs && gnvs->smif)
io_trap_handler(gnvs->smif);
return;
}
/*
* IOTRAP(2) currently unused
* IOTRAP(1) currently unused
*/
/* IOTRAP(0) SMIC */
if (IOTRAP(0)) {
if (!(trap_cycle & (1 << 24))) { /* It's a write */
printk(BIOS_DEBUG, "SMI1 command\n");
/* Trapped write data */
data = pcr_read32(PID_PSTH, PCR_PSTH_TRPD);
data &= mask;
}
}
printk(BIOS_DEBUG, " trapped io address = 0x%x\n",
trap_cycle & 0xfffc);
for (i = 0; i < 4; i++)
if (IOTRAP(i))
printk(BIOS_DEBUG, " TRAP = %d\n", i);
printk(BIOS_DEBUG, " AHBE = %x\n", (trap_cycle >> 16) & 0xf);
printk(BIOS_DEBUG, " MASK = 0x%08x\n", mask);
printk(BIOS_DEBUG, " read/write: %s\n",
(trap_cycle & (1 << 24)) ? "read" : "write");
if (!(trap_cycle & (1 << 24))) {
/* Write Cycle */
data = pcr_read32(PID_PSTH, PCR_PSTH_TRPD);
printk(BIOS_DEBUG, " iotrap written data = 0x%08x\n", data);
}
#undef IOTRAP
}
