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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This file is created based on Intel Tiger Lake Processor SA Datasheet
* Document number: 571131
* Chapter number: 3
*/
#include <console/console.h>
#include <device/device.h>
#include <delay.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <intelblocks/power_limit.h>
#include <intelblocks/systemagent.h>
#include <soc/iomap.h>
#include <soc/soc_chip.h>
#include <soc/systemagent.h>
/*
* SoC implementation
*
* Add all known fixed memory ranges for Host Controller/Memory
* controller.
*/
void soc_add_fixed_mmio_resources(struct device *dev, int *index)
{
static const struct sa_mmio_descriptor soc_fixed_resources[] = {
{ PCIEXBAR, CONFIG_MMCONF_BASE_ADDRESS, CONFIG_SA_PCIEX_LENGTH,
"PCIEXBAR" },
{ MCHBAR, MCH_BASE_ADDRESS, MCH_BASE_SIZE, "MCHBAR" },
{ DMIBAR, DMI_BASE_ADDRESS, DMI_BASE_SIZE, "DMIBAR" },
{ EPBAR, EP_BASE_ADDRESS, EP_BASE_SIZE, "EPBAR" },
{ REGBAR, REG_BASE_ADDRESS, REG_BASE_SIZE, "REGBAR" },
{ EDRAMBAR, EDRAM_BASE_ADDRESS, EDRAM_BASE_SIZE, "EDRAMBAR" },
};
sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources,
ARRAY_SIZE(soc_fixed_resources));
/* Add Vt-d resources if VT-d is enabled */
if ((pci_read_config32(dev, CAPID0_A) & VTD_DISABLE))
return;
sa_add_fixed_mmio_resources(dev, index, soc_vtd_resources,
ARRAY_SIZE(soc_vtd_resources));
}
/*
* SoC implementation
*
* Perform System Agent Initialization during Ramstage phase.
*/
void soc_systemagent_init(struct device *dev)
{
struct soc_power_limits_config *soc_config;
struct device *sa;
uint16_t sa_pci_id;
config_t *config;
/* Get System Agent PCI ID */
sa = pcidev_path_on_root(SA_DEVFN_ROOT);
sa_pci_id = sa ? pci_read_config16(sa, PCI_DEVICE_ID) : 0xFFFF;
/* Enable Power Aware Interrupt Routing */
enable_power_aware_intr();
/* Enable BIOS Reset CPL */
enable_bios_reset_cpl();
/* Configure turbo power limits 1ms after reset complete bit */
mdelay(1);
config = config_of_soc();
/*
* Choose a power limits configuration based on the SoC SKU,
* differentiated here based on SA PCI ID.
*/
switch (sa_pci_id) {
case PCI_DEVICE_ID_INTEL_TGL_ID_U_2_2:
soc_config = &config->power_limits_config[POWER_LIMITS_U_2_CORE];
break;
case PCI_DEVICE_ID_INTEL_TGL_ID_U_4_2:
soc_config = &config->power_limits_config[POWER_LIMITS_U_4_CORE];
break;
case PCI_DEVICE_ID_INTEL_TGL_ID_Y_2_2:
soc_config = &config->power_limits_config[POWER_LIMITS_Y_2_CORE];
break;
case PCI_DEVICE_ID_INTEL_TGL_ID_Y_4_2:
soc_config = &config->power_limits_config[POWER_LIMITS_Y_4_CORE];
break;
default:
printk(BIOS_ERR, "TGL: unknown SA ID: 0x%4x, skipping power limits "
"configuration\n", sa_pci_id);
return;
}
set_power_limits(MOBILE_SKU_PL1_TIME_SEC, soc_config);
}
uint32_t soc_systemagent_max_chan_capacity_mib(u8 capid0_a_ddrsz)
{
switch (capid0_a_ddrsz) {
case 1:
return 8192;
case 2:
return 4096;
case 3:
return 2048;
default:
return 65536;
}
}
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