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soc/intel/xeon_sp: Set SATA REGLOCKs 

Set the SATA and SSATA REGLOCK as indicated by the Intel documentation.

Change-Id: I90e6d0e3b5a38bcd5392e26cbbb6dc4aa6a8304b
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52162
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Marc Jones 2021-04-06 14:29:37 -06:00 committed by Patrick Georgi
parent 836ea75856
commit 4681b2778b
2 changed files with 24 additions and 3 deletions
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10
src/soc/intel/xeon_sp/include/soc/pch_pci_devs.h
View File

@ -13,6 +13,10 @@
/* PCH Device info */
#define PCH_DEV_SLOT_MROM0 0x11
#define PCH_DEVFN_SSATA _PCH_DEVFN(MROM0, 5)
#define PCH_DEV_SSATA _PCH_DEV(MROM0, 5)
#define XHCI_BUS_NUMBER 0x0
#define PCH_DEV_SLOT_XHCI 0x14
#define XHCI_FUNC_NUM 0x0
@ -32,6 +36,12 @@
#define PCH_DEV_CSE_2 _PCH_DEV(CSE, 1)
#define PCH_DEV_CSE_3 _PCH_DEV(CSE, 4)
#define PCH_DEV_SLOT_SATA 0x17
#define PCH_DEVFN_SATA _PCH_DEVFN(SATA, 0)
#define PCH_DEV_SATA _PCH_DEV(SATA, 0)
#define SATAGC 0x9c
#define SATAGC_REGLOCK BIT(31)
#define PCH_DEV_SLOT_LPC 0x1f
#define PCH_DEVFN_LPC _PCH_DEVFN(LPC, 0)
#define PCH_DEVFN_P2SB _PCH_DEVFN(LPC, 1)

17
src/soc/intel/xeon_sp/lockdown.c
View File

@ -1,10 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/mmio.h>
#include <device/pci.h>
#include <intelblocks/cfg.h>
#include <intelblocks/lpc_lib.h>
#include <intelblocks/pmclib.h>
#include <intelpch/lockdown.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
static void lpc_lockdown_config(int chipset_lockdown)
@ -29,13 +31,22 @@ static void pmc_lockdown_config(int chipset_lockdown)
/* Make sure payload/OS can't trigger global reset */
pmc_global_reset_disable_and_lock();
/* Lock PMC stretch policy */
pci_or_config32(PCH_DEV_PMC, GEN_PMCON_B, SLP_STR_POL_LOCK);
}
static void sata_lockdown_config(int chipset_lockdown)
{
if (chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) {
pci_or_config32(PCH_DEV_SATA, SATAGC, SATAGC_REGLOCK);
pci_or_config32(PCH_DEV_SSATA, SATAGC, SATAGC_REGLOCK);
}
}
void soc_lockdown_config(int chipset_lockdown)
{
/* LPC lock down configuration */
lpc_lockdown_config(chipset_lockdown);
/* PMC lock down configuration */
pmc_lockdown_config(chipset_lockdown);
sata_lockdown_config(chipset_lockdown);
}