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/* @file
* STM platform SMM resource
*
* Copyright (c) 2015, Intel Corporation. All rights reserved.
* This program and the accompanying materials are licensed and made
* available under the terms and conditions of the BSD License which
* accompanies this distribution. The full text of the license may be found
* at http://opensource.org/licenses/bsd-license.php.
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
* IMPLIED.
*/
#include <stdint.h>
#include <security/intel/stm/StmApi.h>
#include <security/intel/stm/SmmStm.h>
#include <security/intel/stm/StmPlatformResource.h>
#if CONFIG(SOUTHBRIDGE_INTEL_COMMON_PMCLIB)
#include <southbridge/intel/common/pmutil.h>
#else
#include <soc/pm.h>
#endif
#include <cpu/x86/msr.h>
#include <console/console.h>
#define RDWR_ACCS 3
#define FULL_ACCS 7
// Fixed memory ranges
//
// TSEG memory!
static STM_RSC_MEM_DESC rsc_tseg_memory = {{MEM_RANGE, sizeof(STM_RSC_MEM_DESC)},
0,
0,
FULL_ACCS};
// Flash part
static STM_RSC_MEM_DESC rsc_spi_memory = {
{MEM_RANGE, sizeof(STM_RSC_MEM_DESC)},
0xFE000000,
0x01000000,
FULL_ACCS};
// ACPI
static STM_RSC_IO_DESC rsc_pm_io = {{IO_RANGE, sizeof(STM_RSC_IO_DESC)}, 0, 128};
// PCIE MMIO
static STM_RSC_MMIO_DESC rsc_pcie_mmio = {{MMIO_RANGE, sizeof(STM_RSC_MMIO_DESC)},
0,
0, // Length
RDWR_ACCS};
// Local APIC
static STM_RSC_MMIO_DESC rsc_apic_mmio = {{MMIO_RANGE, sizeof(STM_RSC_MMIO_DESC)},
0,
0x400,
RDWR_ACCS};
// Software SMI
static STM_RSC_TRAPPED_IO_DESC rsc_sw_smi_trap_io = {
{TRAPPED_IO_RANGE, sizeof(STM_RSC_TRAPPED_IO_DESC)},
0xB2,
2};
// End of list
static STM_RSC_END rsc_list_end __attribute__((used)) = {
{END_OF_RESOURCES, sizeof(STM_RSC_END)}, 0};
// Common PCI devices
//
// LPC bridge
STM_RSC_PCI_CFG_DESC rsc_lpc_bridge_pci = {
{PCI_CFG_RANGE, sizeof(STM_RSC_PCI_CFG_DESC)},
RDWR_ACCS,
0,
0,
0x1000,
0,
0,
{
{1, 1, sizeof(STM_PCI_DEVICE_PATH_NODE), LPC_FUNCTION,
LPC_DEVICE},
},
};
// Template for MSR resources.
STM_RSC_MSR_DESC rsc_msr_tpl = {
{MACHINE_SPECIFIC_REG, sizeof(STM_RSC_MSR_DESC)},
};
// MSR indices to register
typedef struct {
uint32_t msr_index;
uint64_t read_mask;
uint64_t write_mask;
} MSR_TABLE_ENTRY;
MSR_TABLE_ENTRY msr_table[] = {
// Index Read Write
// MASK64 means need access, MASK0 means no need access.
{SMRR_PHYSBASE_MSR, MASK64, MASK0},
{SMRR_PHYSMASK_MSR, MASK64, MASK0},
};
/*
* Fix up PCIE resource.
*/
static void fixup_pciex_resource(void)
{
// Find max bus number and PCIEX length
rsc_pcie_mmio.length = CONFIG_SA_PCIEX_LENGTH; // 0x10000000;// 256 MB
rsc_pcie_mmio.base = CONFIG_MMCONF_BASE_ADDRESS;
}
/*
* Add basic resources to BIOS resource database.
*/
static void add_simple_resources(void)
{
int Status = 0;
msr_t ReadMsr;
ReadMsr = rdmsr(SMRR_PHYSBASE_MSR);
rsc_tseg_memory.base = ReadMsr.lo & 0xFFFFF000;
ReadMsr = rdmsr(SMRR_PHYSMASK_MSR);
rsc_tseg_memory.length = (~(ReadMsr.lo & 0xFFFFF000) + 1);
rsc_pm_io.base = (uint16_t)get_pmbase();
// Local APIC. We assume that all thteads are programmed identically
// despite that it is possible to have individual APIC address for
// each of the threads. If this is the case this programming should
// be corrected.
ReadMsr = rdmsr(IA32_APIC_BASE_MSR_INDEX);
rsc_apic_mmio.base = ((uint64_t)ReadMsr.lo & 0xFFFFF000) |
((uint64_t)(ReadMsr.hi & 0x0000000F) << 32);
// PCIEX BAR
fixup_pciex_resource();
Status |= add_pi_resource((void *)&rsc_tseg_memory, 1);
Status |= add_pi_resource((void *)&rsc_spi_memory, 1);
Status |= add_pi_resource((void *)&rsc_pm_io, 1);
Status |= add_pi_resource((void *)&rsc_pcie_mmio, 1);
Status |= add_pi_resource((void *)&rsc_apic_mmio, 1);
Status |= add_pi_resource((void *)&rsc_sw_smi_trap_io, 1);
Status |= add_pi_resource((void *)&rsc_lpc_bridge_pci, 1);
if (Status != 0)
printk(BIOS_DEBUG, "STM - Error in adding simple resources\n");
}
/*
* Add MSR resources to BIOS resource database.
*/
static void add_msr_resources(void)
{
uint32_t Status = 0;
uint32_t Index;
for (Index = 0; Index < ARRAY_SIZE(msr_table); Index++) {
rsc_msr_tpl.msr_index = (uint32_t)msr_table[Index].msr_index;
rsc_msr_tpl.read_mask = (uint64_t)msr_table[Index].read_mask;
rsc_msr_tpl.write_mask = (uint64_t)msr_table[Index].write_mask;
Status |= add_pi_resource((void *)&rsc_msr_tpl, 1);
}
if (Status != 0)
printk(BIOS_DEBUG, "STM - Error in adding MSR resources\n");
}
/*
* Add resources to BIOS resource database.
*/
void add_resources_cmd(void)
{
add_simple_resources();
add_msr_resources();
}
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