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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpigen.h>
#include <assert.h>
#include <cbmem.h>
#include <console/console.h>
#include <cpu/amd/msr.h>
#include <cpu/amd/mtrr.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <fsp/util.h>
#include <stdint.h>
#include <soc/memmap.h>
#include <soc/iomap.h>
#include "chip.h"
enum {
ALIB_DPTCI_FUNCTION_ID = 0xc,
THERMAL_CONTROL_LIMIT_ID = 0x3,
SUSTAINED_POWER_LIMIT_PARAM_ID = 0x5,
FAST_PPT_LIMIT_PARAM_ID = 0x6,
SLOW_PPT_LIMIT_PARAM_ID = 0x7,
DPTC_TOTAL_UPDATE_PARAMS = 4,
};
struct dptc_param {
uint8_t id;
uint32_t value;
} __packed;
struct dptc_input {
uint16_t size;
struct dptc_param params[DPTC_TOTAL_UPDATE_PARAMS];
} __packed;
#define DPTC_INPUTS(_thermctllmit, _sustained, _fast, _slow) \
{ \
.size = sizeof(struct dptc_input), \
.params = { \
{ \
.id = THERMAL_CONTROL_LIMIT_ID, \
.value = _thermctllmit, \
}, \
{ \
.id = SUSTAINED_POWER_LIMIT_PARAM_ID, \
.value = _sustained, \
}, \
{ \
.id = FAST_PPT_LIMIT_PARAM_ID, \
.value = _fast, \
}, \
{ \
.id = SLOW_PPT_LIMIT_PARAM_ID, \
.value = _slow, \
}, \
}, \
}
/*
*
* +--------------------------------+
* | |
* | |
* | |
* | |
* | |
* | |
* | |
* reserved_dram_end +--------------------------------+
* | |
* | verstage (if reqd) |
* | (VERSTAGE_SIZE) |
* +--------------------------------+ VERSTAGE_ADDR
* | |
* | FSP-M |
* | (FSP_M_SIZE) |
* +--------------------------------+ FSP_M_ADDR
* | |X86_RESET_VECTOR = ROMSTAGE_ADDR + ROMSTAGE_SIZE - 0x10
* | romstage |
* | (ROMSTAGE_SIZE) |
* +--------------------------------+ ROMSTAGE_ADDR
* | bootblock |
* | (C_ENV_BOOTBLOCK_SIZE) |
* +--------------------------------+ BOOTBLOCK_ADDR
* | Unused hole |
* | (86KiB) |
* +--------------------------------+
* | FMAP cache (FMAP_SIZE) |
* +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE + 0x200
* | Early Timestamp region (512B) |
* +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE
* | Preram CBMEM console |
* | (PRERAM_CBMEM_CONSOLE_SIZE) |
* +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE
* | PSP shared (vboot workbuf) |
* | (PSP_SHAREDMEM_SIZE) |
* +--------------------------------+ PSP_SHAREDMEM_BASE
* | APOB (64KiB) |
* +--------------------------------+ PSP_APOB_DRAM_ADDRESS
* | Early BSP stack |
* | (EARLYRAM_BSP_STACK_SIZE) |
* reserved_dram_start +--------------------------------+ EARLY_RESERVED_DRAM_BASE
* | DRAM |
* +--------------------------------+ 0x100000
* | Option ROM |
* +--------------------------------+ 0xc0000
* | Legacy VGA |
* +--------------------------------+ 0xa0000
* | DRAM |
* +--------------------------------+ 0x0
*/
static void read_resources(struct device *dev)
{
uint32_t mem_usable = (uintptr_t)cbmem_top();
unsigned int idx = 0;
const struct hob_header *hob = fsp_get_hob_list();
const struct hob_resource *res;
struct resource *gnb_apic;
uintptr_t early_reserved_dram_start, early_reserved_dram_end;
const struct memmap_early_dram *e = memmap_get_early_dram_usage();
early_reserved_dram_start = e->base;
early_reserved_dram_end = e->base + e->size;
/* 0x0 - 0x9ffff */
ram_resource(dev, idx++, 0, 0xa0000 / KiB);
/* 0xa0000 - 0xbffff: legacy VGA */
mmio_resource(dev, idx++, 0xa0000 / KiB, 0x20000 / KiB);
/* 0xc0000 - 0xfffff: Option ROM */
reserved_ram_resource(dev, idx++, 0xc0000 / KiB, 0x40000 / KiB);
/* 1MB - bottom of DRAM reserved for early coreboot usage */
ram_resource(dev, idx++, (1 * MiB) / KiB,
(early_reserved_dram_start - (1 * MiB)) / KiB);
/* DRAM reserved for early coreboot usage */
reserved_ram_resource(dev, idx++, early_reserved_dram_start / KiB,
(early_reserved_dram_end - early_reserved_dram_start) / KiB);
/* top of DRAM consumed early - low top usable RAM
* cbmem_top() accounts for low UMA and TSEG if they are used. */
ram_resource(dev, idx++, early_reserved_dram_end / KiB,
(mem_usable - early_reserved_dram_end) / KiB);
mmconf_resource(dev, MMIO_CONF_BASE);
if (!hob) {
printk(BIOS_ERR, "Error: %s incomplete because no HOB list was found\n",
__func__);
return;
}
for (; hob->type != HOB_TYPE_END_OF_HOB_LIST; hob = fsp_next_hob(hob)) {
if (hob->type != HOB_TYPE_RESOURCE_DESCRIPTOR)
continue;
res = fsp_hob_header_to_resource(hob);
if (res->type == EFI_RESOURCE_SYSTEM_MEMORY && res->addr < mem_usable)
continue; /* 0 through low usable was set above */
if (res->type == EFI_RESOURCE_MEMORY_MAPPED_IO)
continue; /* Done separately */
if (res->type == EFI_RESOURCE_SYSTEM_MEMORY)
ram_resource(dev, idx++, res->addr / KiB, res->length / KiB);
else if (res->type == EFI_RESOURCE_MEMORY_RESERVED)
reserved_ram_resource(dev, idx++, res->addr / KiB, res->length / KiB);
else
printk(BIOS_ERR, "Error: failed to set resources for type %d\n",
res->type);
}
/* GNB IOAPIC resource */
gnb_apic = new_resource(dev, GNB_IO_APIC_ADDR);
gnb_apic->base = GNB_IO_APIC_ADDR;
gnb_apic->size = 0x00001000;
gnb_apic->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}
static void dptc_call_alib(const char *buf_name, uint8_t *buffer, size_t size)
{
/* Name (buf_name, Buffer(size) {...} */
acpigen_write_name(buf_name);
acpigen_write_byte_buffer(buffer, size);
/* \_SB.ALIB(0xc, buf_name) */
acpigen_emit_namestring("\\_SB.ALIB");
acpigen_write_integer(ALIB_DPTCI_FUNCTION_ID);
acpigen_emit_namestring(buf_name);
}
static void acipgen_dptci(void)
{
const config_t *config = config_of_soc();
if (!config->dptc_enable)
return;
struct dptc_input default_input = DPTC_INPUTS(config->thermctl_limit_degreeC,
config->sustained_power_limit_mW,
config->fast_ppt_limit_mW,
config->slow_ppt_limit_mW);
struct dptc_input tablet_mode_input = DPTC_INPUTS(
config->thermctl_limit_tablet_mode_degreeC,
config->sustained_power_limit_tablet_mode_mW,
config->fast_ppt_limit_tablet_mode_mW,
config->slow_ppt_limit_tablet_mode_mW);
/* Scope (\_SB) */
acpigen_write_scope("\\_SB");
/* Method(DPTC, 0, Serialized) */
acpigen_write_method_serialized("DPTC", 0);
/* If (LEqual ("\_SB.PCI0.LPCB.EC0.TBMD", 1)) */
acpigen_write_if_lequal_namestr_int("\\_SB.PCI0.LPCB.EC0.TBMD", 1);
dptc_call_alib("TABB", (uint8_t *)(void *)&tablet_mode_input,
sizeof(tablet_mode_input));
acpigen_pop_len(); /* If */
/* Else */
acpigen_write_else();
dptc_call_alib("DEFB", (uint8_t *)(void *)&default_input, sizeof(default_input));
acpigen_pop_len(); /* Else */
acpigen_pop_len(); /* Method DPTC */
acpigen_pop_len(); /* Scope \_SB */
}
/* Used by \_SB.PCI0._CRS */
static void root_complex_fill_ssdt(const struct device *device)
{
msr_t msr;
const char *scope;
assert(device);
scope = acpi_device_scope(device);
assert(scope);
acpigen_write_scope(scope);
msr = rdmsr(TOP_MEM);
acpigen_write_name_dword("TOM1", msr.lo);
msr = rdmsr(TOP_MEM2);
/*
* Since XP only implements parts of ACPI 2.0, we can't use a qword
* here.
* See http://www.acpi.info/presentations/S01USMOBS169_OS%2520new.ppt
* slide 22ff.
* Shift value right by 20 bit to make it fit into 32bit,
* giving us 1MB granularity and a limit of almost 4Exabyte of memory.
*/
acpigen_write_name_dword("TOM2", (msr.hi << 12) | msr.lo >> 20);
acpigen_pop_len();
acipgen_dptci();
}
static struct device_operations root_complex_operations = {
.read_resources = read_resources,
.enable_resources = pci_dev_enable_resources,
.acpi_fill_ssdt = root_complex_fill_ssdt,
};
static const struct pci_driver family17_root_complex __pci_driver = {
.ops = &root_complex_operations,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_17H_MODEL_101F_NB,
};
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