| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008-2009 coresystems GmbH |
| * Copyright (C) 2014 Google Inc. |
| * Copyright (C) 2017 Siemens AG |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <delay.h> |
| #include <types.h> |
| #include <console/console.h> |
| #include <cpu/x86/cache.h> |
| #include <device/pci_def.h> |
| #include <cpu/x86/smm.h> |
| #include <spi-generic.h> |
| #include <elog.h> |
| #include <soc/lpc.h> |
| #include <soc/iomap.h> |
| #include <soc/pci_devs.h> |
| #include <soc/smm.h> |
| |
| /** |
| * @brief Set the EOS bit |
| */ |
| void southbridge_smi_set_eos(void) |
| { |
| enable_smi(EOS); |
| } |
| |
| static void southbridge_smi_serirq(void) |
| { |
| |
| } |
| |
| typedef void (*smi_handler_t)(void); |
| |
| static smi_handler_t southbridge_smi[32] = { |
| NULL, // [0] reserved |
| NULL, // [1] reserved |
| NULL, // [2] BIOS_STS |
| NULL, // [3] LEGACY_USB_STS |
| NULL, // [4] SLP_SMI_STS |
| NULL, // [5] APM_STS |
| NULL, // [6] SWSMI_TMR_STS |
| NULL, // [7] reserved |
| NULL, // [8] PM1_STS |
| NULL, // [9] GPE0_STS |
| NULL, // [10] GPI_STS |
| NULL, // [11] MCSMI_STS |
| NULL, // [12] DEVMON_STS |
| NULL, // [13] TCO_STS |
| NULL, // [14] PERIODIC_STS |
| southbridge_smi_serirq, // [15] SERIRQ_SMI_STS |
| NULL, // [16] SMBUS_SMI_STS |
| NULL, // [17] LEGACY_USB2_STS |
| NULL, // [18] INTEL_USB2_STS |
| NULL, // [19] reserved |
| NULL, // [20] PCI_EXP_SMI_STS |
| NULL, // [21] MONITOR_STS |
| NULL, // [22] reserved |
| NULL, // [23] reserved |
| NULL, // [24] reserved |
| NULL, // [25] EL_SMI_STS |
| NULL, // [26] SPI_STS |
| NULL, // [27] reserved |
| NULL, // [28] reserved |
| NULL, // [29] reserved |
| NULL, // [30] reserved |
| NULL // [31] reserved |
| }; |
| |
| /** |
| * @brief Interrupt handler for SMI# |
| * |
| * @param smm_revision revision of the smm state save map |
| */ |
| |
| void southbridge_smi_handler(void) |
| { |
| int i; |
| u32 smi_sts; |
| |
| /* We need to clear the SMI status registers, or we won't see what's |
| happening in the following calls. */ |
| smi_sts = clear_smi_status(); |
| |
| /* Call SMI sub handler for each of the status bits */ |
| for (i = 0; i < 31; i++) { |
| if (smi_sts & (1 << i)) { |
| if (southbridge_smi[i]) { |
| southbridge_smi[i](); |
| } else { |
| printk(BIOS_DEBUG, |
| "SMI_STS[%d] occurred, but no " |
| "handler available.\n", i); |
| } |
| } |
| } |
| } |