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/* SPDX-License-Identifier: GPL-2.0-only */
#include <bootstate.h>
#include <console/console.h>
#include <console/post_codes.h>
#include <device/pci_ops.h>
#include <soc/pci_devs.h>
#include <soc/pch.h>
#include <soc/systemagent.h>
/*
* 16.6 System Agent Configuration Locking
* "5th Generation Intel Core Processor Family BIOS Specification"
* Document Number 535094
* Revision 2.2.0, August 2014
*
* To ease reading, first lock PCI registers, then MCHBAR registers.
* Write the MC Lock register first, since more than one bit gets set.
*/
static void broadwell_systemagent_finalize(void)
{
struct device *const host_bridge = pcidev_path_on_root(SA_DEVFN_ROOT);
pci_or_config16(host_bridge, GGC, 1 << 0);
pci_or_config32(host_bridge, DPR, 1 << 0);
pci_or_config32(host_bridge, MESEG_LIMIT, 1 << 10);
pci_or_config32(host_bridge, REMAPBASE, 1 << 0);
pci_or_config32(host_bridge, REMAPLIMIT, 1 << 0);
pci_or_config32(host_bridge, TOM, 1 << 0);
pci_or_config32(host_bridge, TOUUD, 1 << 0);
pci_or_config32(host_bridge, BDSM, 1 << 0);
pci_or_config32(host_bridge, BGSM, 1 << 0);
pci_or_config32(host_bridge, TSEG, 1 << 0);
pci_or_config32(host_bridge, TOLUD, 1 << 0);
MCHBAR32(0x50fc) |= 0x8f; /* MC */
MCHBAR32(0x5500) |= 1 << 0; /* PAVP */
MCHBAR32(0x5880) |= 1 << 5; /* DDR PTM */
MCHBAR32(0x7000) |= 1 << 31;
MCHBAR32(0x77fc) |= 1 << 0;
MCHBAR32(0x7ffc) |= 1 << 0;
MCHBAR32(0x6800) |= 1 << 31;
MCHBAR32(0x6020) |= 1 << 0; /* UMA GFX */
MCHBAR32(0x63fc) |= 1 << 0; /* VTDTRK */
/* Read+write the following */
MCHBAR32(0x6030) = MCHBAR32(0x6030);
MCHBAR32(0x6034) = MCHBAR32(0x6034);
MCHBAR32(0x6008) = MCHBAR32(0x6008);
}
static void broadwell_finalize(void *unused)
{
printk(BIOS_DEBUG, "Finalizing chipset.\n");
broadwell_systemagent_finalize();
broadwell_pch_finalize();
/* Indicate finalize step with post code */
post_code(POST_OS_BOOT);
}
BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, broadwell_finalize, NULL);
BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, broadwell_finalize, NULL);
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