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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpigen.h>
#include <amdblocks/acpi.h>
#include <amdblocks/alib.h>
#include <amdblocks/memmap.h>
#include <amdblocks/ioapic.h>
#include <arch/ioapic.h>
#include <assert.h>
#include <cbmem.h>
#include <console/console.h>
#include <cpu/amd/msr.h>
#include <device/device.h>
#include <device/pci.h>
#include <fsp/util.h>
#include <stdint.h>
#include <soc/iomap.h>
#include "chip.h"
#define DPTC_TOTAL_UPDATE_PARAMS 4
struct dptc_input {
uint16_t size;
struct alib_dptc_param params[DPTC_TOTAL_UPDATE_PARAMS];
} __packed;
#define DPTC_INPUTS(_thermctllmit, _sustained, _fast, _slow) \
{ \
.size = sizeof(struct dptc_input), \
.params = { \
{ \
.id = ALIB_DPTC_THERMAL_CONTROL_LIMIT_ID, \
.value = _thermctllmit, \
}, \
{ \
.id = ALIB_DPTC_SUSTAINED_POWER_LIMIT_ID, \
.value = _sustained, \
}, \
{ \
.id = ALIB_DPTC_FAST_PPT_LIMIT_ID, \
.value = _fast, \
}, \
{ \
.id = ALIB_DPTC_SLOW_PPT_LIMIT_ID, \
.value = _slow, \
}, \
}, \
}
/*
*
* +--------------------------------+
* | |
* | |
* | |
* | |
* | |
* | |
* | |
* reserved_dram_end +--------------------------------+
* | |
* | verstage (if reqd) |
* | (VERSTAGE_SIZE) |
* +--------------------------------+ VERSTAGE_ADDR
* | |
* | FSP-M |
* | (FSP_M_SIZE) |
* +--------------------------------+ FSP_M_ADDR
* | romstage |
* | (ROMSTAGE_SIZE) |
* +--------------------------------+ ROMSTAGE_ADDR = BOOTBLOCK_END
* | | X86_RESET_VECTOR = BOOTBLOCK_END - 0x10
* | bootblock |
* | (C_ENV_BOOTBLOCK_SIZE) |
* +--------------------------------+ BOOTBLOCK_ADDR = BOOTBLOCK_END - C_ENV_BOOTBLOCK_SIZE
* | 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_iterator;
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;
/* The root complex has no PCI BARs implemented, so there's no need to call
pci_dev_read_resources for it */
/* 0x0 - 0x9ffff */
ram_resource_kb(dev, idx++, 0, 0xa0000 / KiB);
/* 0xa0000 - 0xbffff: legacy VGA */
mmio_resource_kb(dev, idx++, 0xa0000 / KiB, 0x20000 / KiB);
/* 0xc0000 - 0xfffff: Option ROM */
reserved_ram_resource_kb(dev, idx++, 0xc0000 / KiB, 0x40000 / KiB);
/* 1MB - bottom of DRAM reserved for early coreboot usage */
ram_resource_kb(dev, idx++, (1 * MiB) / KiB,
(early_reserved_dram_start - (1 * MiB)) / KiB);
/* DRAM reserved for early coreboot usage */
reserved_ram_resource_kb(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_kb(dev, idx++, early_reserved_dram_end / KiB,
(mem_usable - early_reserved_dram_end) / KiB);
mmconf_resource(dev, idx++);
/* GNB IOAPIC resource */
gnb_apic = new_resource(dev, idx++);
gnb_apic->base = GNB_IO_APIC_ADDR;
gnb_apic->size = 0x00001000;
gnb_apic->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
if (fsp_hob_iterator_init(&hob_iterator) != CB_SUCCESS) {
printk(BIOS_ERR, "%s incomplete because no HOB list was found\n", __func__);
return;
}
while (fsp_hob_iterator_get_next_resource(&hob_iterator, &res) == CB_SUCCESS) {
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_kb(dev, idx++, res->addr / KiB, res->length / KiB);
else if (res->type == EFI_RESOURCE_MEMORY_RESERVED)
reserved_ram_resource_kb(dev, idx++, res->addr / KiB, res->length / KiB);
else
printk(BIOS_ERR, "failed to set resources for type %d\n",
res->type);
}
}
static void root_complex_init(struct device *dev)
{
register_new_ioapic((u8 *)GNB_IO_APIC_ADDR);
}
static void acipgen_dptci(void)
{
const struct soc_amd_picasso_config *config = config_of_soc();
/* Normal mode DPTC values. */
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);
acpigen_write_alib_dptc_default((uint8_t *)&default_input, sizeof(default_input));
/* Tablet Mode */
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);
acpigen_write_alib_dptc_tablet((uint8_t *)&tablet_mode_input,
sizeof(tablet_mode_input));
}
static void root_complex_fill_ssdt(const struct device *device)
{
acpi_fill_root_complex_tom(device);
if (CONFIG(SOC_AMD_COMMON_BLOCK_ACPI_DPTC))
acipgen_dptci();
}
static const char *gnb_acpi_name(const struct device *dev)
{
return "GNB";
}
struct device_operations picasso_root_complex_operations = {
.read_resources = read_resources,
.set_resources = noop_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = root_complex_init,
.acpi_name = gnb_acpi_name,
.acpi_fill_ssdt = root_complex_fill_ssdt,
};
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