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/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/cpu.h>
#include <amdblocks/iomap.h>
#include <amdblocks/mca.h>
#include <amdblocks/reset.h>
#include <cpu/amd/msr.h>
#include <cpu/cpu.h>
#include <cpu/x86/mp.h>
#include <cpu/x86/mtrr.h>
#include <cpu/x86/msr.h>
#include <device/device.h>
#include <device/pci_ops.h>
#include <soc/pci_devs.h>
#include <soc/cpu.h>
#include <soc/iomap.h>
#include <console/console.h>
/*
* MP and SMM loading initialization.
*/
void mp_init_cpus(struct bus *cpu_bus)
{
extern const struct mp_ops amd_mp_ops_with_smm;
if (mp_init_with_smm(cpu_bus, &amd_mp_ops_with_smm) != CB_SUCCESS)
die_with_post_code(POST_HW_INIT_FAILURE,
"mp_init_with_smm failed. Halting.\n");
/* The flash is now no longer cacheable. Reset to WP for performance. */
mtrr_use_temp_range(FLASH_BELOW_4GB_MAPPING_REGION_BASE,
FLASH_BELOW_4GB_MAPPING_REGION_SIZE, MTRR_TYPE_WRPROT);
set_warm_reset_flag();
}
static void model_15_init(struct device *dev)
{
check_mca();
/*
* Per AMD, sync an undocumented MSR with the PSP base address.
* Experiments showed that if you write to the MSR after it has
* been previously programmed, it causes a general protection fault.
* Also, the MSR survives warm reset and S3 cycles, so we need to
* test if it was previously written before writing to it.
*/
msr_t psp_msr;
uint32_t psp_bar; /* Note: NDA BKDG names this 32-bit register BAR3 */
psp_bar = pci_read_config32(SOC_PSP_DEV, PCI_BASE_ADDRESS_4);
psp_bar &= ~PCI_BASE_ADDRESS_MEM_ATTR_MASK;
psp_msr = rdmsr(PSP_ADDR_MSR);
if (psp_msr.lo == 0) {
psp_msr.lo = psp_bar;
wrmsr(PSP_ADDR_MSR, psp_msr);
}
}
static struct device_operations cpu_dev_ops = {
.init = model_15_init,
};
static struct cpu_device_id cpu_table[] = {
{ X86_VENDOR_AMD, CPUID_FROM_FMS(0x15, 0x60, 0), CPUID_ALL_STEPPINGS_MASK },
{ X86_VENDOR_AMD, CPUID_FROM_FMS(0x15, 0x70, 0), CPUID_ALL_STEPPINGS_MASK },
CPU_TABLE_END
};
static const struct cpu_driver model_15 __cpu_driver = {
.ops = &cpu_dev_ops,
.id_table = cpu_table,
};
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