sb/intel/common: Create a common PCH finalise implementation
The common finalise code is used by bd82x6x, Lynx Point, and Ibex Peak.
Lynx Point now benefits from being able to write-protect the flash chip.
For Lynx Point, writing the SPI OPMENU now happens in ramstage, as done
in bd82x6x.
Tested on an ASRock H81M-HDS (Lynx Point). When write-protection is
configured, flashrom reports all flash regions as read-only, and does
not manage to alter the contents of the flash chip.
Also tested on an ASUS P8H61-M LX (Cougar Point). Everything seems to
work as before.
Change-Id: I781082b1ed507b00815d1e85aec3e56ae5a4bef2
Signed-off-by: Tristan Corrick <tristan@corrick.kiwi>
Reviewed-on: https://review.coreboot.org/c/29977
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/southbridge/intel/bd82x6x/Kconfig b/src/southbridge/intel/bd82x6x/Kconfig
index d906ea7..1396a63 100644
--- a/src/southbridge/intel/bd82x6x/Kconfig
+++ b/src/southbridge/intel/bd82x6x/Kconfig
@@ -25,6 +25,7 @@
def_bool y
select ACPI_INTEL_HARDWARE_SLEEP_VALUES
select SOUTHBRIDGE_INTEL_COMMON
+ select SOUTHBRIDGE_INTEL_COMMON_FINALIZE
select SOUTHBRIDGE_INTEL_COMMON_RCBA_PIRQ
select SOUTHBRIDGE_INTEL_COMMON_SMBUS
select SOUTHBRIDGE_INTEL_COMMON_SPI
@@ -67,42 +68,3 @@
default 0x80
endif
-
-if SOUTHBRIDGE_INTEL_BD82X6X || SOUTHBRIDGE_INTEL_C216 || SOUTHBRIDGE_INTEL_IBEXPEAK
-
-choice
- prompt "Flash locking during chipset lockdown"
- default LOCK_SPI_FLASH_NONE
-
-config LOCK_SPI_FLASH_NONE
- bool "Don't lock flash sections"
-
-config LOCK_SPI_FLASH_RO
- bool "Write-protect all flash sections"
- help
- Select this if you want to write-protect the whole firmware flash
- chip. The locking will take place during the chipset lockdown, which
- is either triggered by coreboot (when INTEL_CHIPSET_LOCKDOWN is set)
- or has to be triggered later (e.g. by the payload or the OS).
-
- NOTE: If you trigger the chipset lockdown unconditionally,
- you won't be able to write to the flash chip using the
- internal programmer any more.
-
-config LOCK_SPI_FLASH_NO_ACCESS
- bool "Write-protect all flash sections and read-protect non-BIOS sections"
- help
- Select this if you want to protect the firmware flash against all
- further accesses (with the exception of the memory mapped BIOS re-
- gion which is always readable). The locking will take place during
- the chipset lockdown, which is either triggered by coreboot (when
- INTEL_CHIPSET_LOCKDOWN is set) or has to be triggered later (e.g.
- by the payload or the OS).
-
- NOTE: If you trigger the chipset lockdown unconditionally,
- you won't be able to write to the flash chip using the
- internal programmer any more.
-
-endchoice
-
-endif
diff --git a/src/southbridge/intel/bd82x6x/Makefile.inc b/src/southbridge/intel/bd82x6x/Makefile.inc
index c00b2c4..24d7e2d 100644
--- a/src/southbridge/intel/bd82x6x/Makefile.inc
+++ b/src/southbridge/intel/bd82x6x/Makefile.inc
@@ -35,7 +35,7 @@
ramstage-$(CONFIG_ELOG) += elog.c
-smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c me.c me_8.x.c finalize.c pch.c
+smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c me.c me_8.x.c pch.c
romstage-y += early_smbus.c me_status.c
romstage-y += early_spi.c early_pch_common.c
diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index bb0d5c4..280ac7d6 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -56,10 +56,6 @@
#ifndef __ACPI__
#define DEBUG_PERIODIC_SMIS 0
-#if defined(__SMM__) && !defined(__ASSEMBLER__)
-void intel_pch_finalize_smm(void);
-#endif
-
#if !defined(__ASSEMBLER__)
#if !defined(__PRE_RAM__)
#if !defined(__SIMPLE_DEVICE__)
diff --git a/src/southbridge/intel/bd82x6x/smihandler.c b/src/southbridge/intel/bd82x6x/smihandler.c
index 03d2687..6291867 100644
--- a/src/southbridge/intel/bd82x6x/smihandler.c
+++ b/src/southbridge/intel/bd82x6x/smihandler.c
@@ -32,6 +32,7 @@
#include <southbridge/intel/common/gpio.h>
#include <cpu/intel/model_206ax/model_206ax.h>
#include <southbridge/intel/common/pmutil.h>
+#include <southbridge/intel/common/finalize.h>
static global_nvs_t *gnvs;
global_nvs_t *smm_get_gnvs(void)
diff --git a/src/southbridge/intel/common/Kconfig b/src/southbridge/intel/common/Kconfig
index 957faa5..ba53f68 100644
--- a/src/southbridge/intel/common/Kconfig
+++ b/src/southbridge/intel/common/Kconfig
@@ -33,6 +33,9 @@
config SOUTHBRIDGE_INTEL_COMMON_ACPI_MADT
bool
+config SOUTHBRIDGE_INTEL_COMMON_FINALIZE
+ bool
+
config INTEL_DESCRIPTOR_MODE_CAPABLE
def_bool n
help
@@ -55,3 +58,42 @@
locked down on each normal boot path (done by either coreboot or payload)
and S3 resume (always done by coreboot). Select this to let coreboot
to do this on normal boot path.
+
+if SOUTHBRIDGE_INTEL_COMMON_FINALIZE
+
+choice
+ prompt "Flash locking during chipset lockdown"
+ default LOCK_SPI_FLASH_NONE
+
+config LOCK_SPI_FLASH_NONE
+ bool "Don't lock flash sections"
+
+config LOCK_SPI_FLASH_RO
+ bool "Write-protect all flash sections"
+ help
+ Select this if you want to write-protect the whole firmware flash
+ chip. The locking will take place during the chipset lockdown, which
+ is either triggered by coreboot (when INTEL_CHIPSET_LOCKDOWN is set)
+ or has to be triggered later (e.g. by the payload or the OS).
+
+ NOTE: If you trigger the chipset lockdown unconditionally,
+ you won't be able to write to the flash chip using the
+ internal programmer any more.
+
+config LOCK_SPI_FLASH_NO_ACCESS
+ bool "Write-protect all flash sections and read-protect non-BIOS sections"
+ help
+ Select this if you want to protect the firmware flash against all
+ further accesses (with the exception of the memory mapped BIOS re-
+ gion which is always readable). The locking will take place during
+ the chipset lockdown, which is either triggered by coreboot (when
+ INTEL_CHIPSET_LOCKDOWN is set) or has to be triggered later (e.g.
+ by the payload or the OS).
+
+ NOTE: If you trigger the chipset lockdown unconditionally,
+ you won't be able to write to the flash chip using the
+ internal programmer any more.
+
+endchoice
+
+endif
diff --git a/src/southbridge/intel/common/Makefile.inc b/src/southbridge/intel/common/Makefile.inc
index b87354c..1a509b1 100644
--- a/src/southbridge/intel/common/Makefile.inc
+++ b/src/southbridge/intel/common/Makefile.inc
@@ -54,6 +54,8 @@
ramstage-$(CONFIG_SOUTHBRIDGE_INTEL_COMMON_ACPI_MADT) += madt.c
+smm-$(CONFIG_SOUTHBRIDGE_INTEL_COMMON_FINALIZE) += finalize.c
+
romstage-y += rtc.c
ramstage-y += rtc.c
postcar-y += rtc.c
diff --git a/src/southbridge/intel/bd82x6x/finalize.c b/src/southbridge/intel/common/finalize.c
similarity index 67%
rename from src/southbridge/intel/bd82x6x/finalize.c
rename to src/southbridge/intel/common/finalize.c
index a08535e9..f1c33b9 100644
--- a/src/southbridge/intel/bd82x6x/finalize.c
+++ b/src/southbridge/intel/common/finalize.c
@@ -15,24 +15,25 @@
*/
#include <arch/io.h>
-#include <device/pci_ops.h>
#include <console/post_codes.h>
-#include <cpu/x86/smm.h>
+#include <device/pci_ops.h>
#include <southbridge/intel/common/pmbase.h>
+#include <southbridge/intel/common/pmutil.h>
+#include <southbridge/intel/common/rcba.h>
#include <spi-generic.h>
-#include "chip.h"
-#include "pch.h"
+
+#include "finalize.h"
void intel_pch_finalize_smm(void)
{
+ const pci_devfn_t lpc_dev = PCI_DEV(0, 0x1f, 0);
+
if (IS_ENABLED(CONFIG_LOCK_SPI_FLASH_RO) ||
IS_ENABLED(CONFIG_LOCK_SPI_FLASH_NO_ACCESS)) {
- /* Copy flash regions from FREG0-4 to PR0-4
- and enable write protection bit31 */
int i;
- u32 lockmask = (1 << 31);
+ u32 lockmask = 1UL << 31;
if (IS_ENABLED(CONFIG_LOCK_SPI_FLASH_NO_ACCESS))
- lockmask |= (1 << 15);
+ lockmask |= 1 << 15;
for (i = 0; i < 20; i += 4)
RCBA32(0x3874 + i) = RCBA32(0x3854 + i) | lockmask;
}
@@ -40,13 +41,12 @@
/* Lock SPIBAR */
RCBA32_OR(0x3804, (1 << 15));
-#if IS_ENABLED(CONFIG_SPI_FLASH_SMM)
- /* Re-init SPI driver to handle locked BAR */
- spi_init();
-#endif
+ if (IS_ENABLED(CONFIG_SPI_FLASH_SMM))
+ /* Re-init SPI driver to handle locked BAR */
+ spi_init();
/* TCLOCKDN: TC Lockdown */
- RCBA32_OR(0x0050, (1 << 31));
+ RCBA32_OR(0x0050, (1UL << 31));
/* BIOS Interface Lockdown */
RCBA32_OR(0x3410, (1 << 0));
@@ -54,23 +54,23 @@
/* Function Disable SUS Well Lockdown */
RCBA_AND_OR(8, 0x3420, ~0U, (1 << 7));
- /* Global SMI Lock */
- pci_or_config16(PCH_LPC_DEV, GEN_PMCON_1, 1 << 4);
+ pci_or_config16(lpc_dev, D31F0_GEN_PMCON_1, SMI_LOCK);
- /* GEN_PMCON Lock */
- pci_or_config8(PCH_LPC_DEV, GEN_PMCON_LOCK, (1 << 1) | (1 << 2));
+ pci_or_config8(lpc_dev, D31F0_GEN_PMCON_LOCK,
+ ACPI_BASE_LOCK | SLP_STR_POL_LOCK);
- /* ETR3: CF9GR Lockdown */
- pci_update_config32(PCH_LPC_DEV, ETR3, ~ETR3_CF9GR, ETR3_CF9LOCK);
+ pci_update_config32(lpc_dev, D31F0_ETR3, ~ETR3_CF9GR, ETR3_CF9LOCK);
+
+ if (IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_LYNXPOINT))
+ /* PMSYNC */
+ RCBA32_OR(0x33c4, (1UL << 31));
/* R/WO registers */
RCBA32(0x21a4) = RCBA32(0x21a4);
pci_write_config32(PCI_DEV(0, 27, 0), 0x74,
pci_read_config32(PCI_DEV(0, 27, 0), 0x74));
- /* TCO_Lock */
write_pmbase16(TCO1_CNT, read_pmbase16(TCO1_CNT) | TCO_LOCK);
- /* Indicate finalize step with post code */
- outb(POST_OS_BOOT, 0x80);
+ outb(POST_OS_BOOT, CONFIG_POST_IO_PORT);
}
diff --git a/src/southbridge/intel/common/finalize.h b/src/southbridge/intel/common/finalize.h
new file mode 100644
index 0000000..4a8cbc0
--- /dev/null
+++ b/src/southbridge/intel/common/finalize.h
@@ -0,0 +1,22 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018 Tristan Corrick <tristan@corrick.kiwi>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef SOUTHBRIDGE_INTEL_COMMON_FINALIZE_H
+#define SOUTHBRIDGE_INTEL_COMMON_FINALIZE_H
+
+void intel_pch_finalize_smm(void);
+
+#endif /* SOUTHBRIDGE_INTEL_COMMON_FINALIZE_H */
diff --git a/src/southbridge/intel/common/pmutil.h b/src/southbridge/intel/common/pmutil.h
index 2e761cc..47813f7 100644
--- a/src/southbridge/intel/common/pmutil.h
+++ b/src/southbridge/intel/common/pmutil.h
@@ -20,10 +20,20 @@
#include <cpu/x86/smm.h>
#define D31F0_PMBASE 0x40
+#define D31F0_GEN_PMCON_1 0xa0
+#define SMI_LOCK (1 << 4)
+#define D31F0_GEN_PMCON_2 0xa2
#define D31F0_GEN_PMCON_3 0xa4
#define RTC_BATTERY_DEAD (1 << 2)
#define RTC_POWER_FAILED (1 << 1)
#define SLEEP_AFTER_POWER_FAIL (1 << 0)
+#define D31F0_GEN_PMCON_LOCK 0xa6
+#define ACPI_BASE_LOCK (1 << 1)
+#define SLP_STR_POL_LOCK (1 << 2)
+#define D31F0_ETR3 0xac
+#define ETR3_CWORWRE (1 << 18)
+#define ETR3_CF9GR (1 << 20)
+#define ETR3_CF9LOCK (1 << 31)
#define D31F0_GPIO_ROUT 0xb8
#define GPI_DISABLE 0x00
#define GPI_IS_SMI 0x01
diff --git a/src/southbridge/intel/ibexpeak/Kconfig b/src/southbridge/intel/ibexpeak/Kconfig
index fe6526d..7e2254e4d 100644
--- a/src/southbridge/intel/ibexpeak/Kconfig
+++ b/src/southbridge/intel/ibexpeak/Kconfig
@@ -28,6 +28,7 @@
select PCIEXP_ASPM
select PCIEXP_COMMON_CLOCK
select SOUTHBRIDGE_INTEL_COMMON
+ select SOUTHBRIDGE_INTEL_COMMON_FINALIZE
select SOUTHBRIDGE_INTEL_COMMON_RCBA_PIRQ
select SOUTHBRIDGE_INTEL_COMMON_SMBUS
select SOUTHBRIDGE_INTEL_COMMON_SPI
diff --git a/src/southbridge/intel/ibexpeak/Makefile.inc b/src/southbridge/intel/ibexpeak/Makefile.inc
index 906652d..5c89030 100644
--- a/src/southbridge/intel/ibexpeak/Makefile.inc
+++ b/src/southbridge/intel/ibexpeak/Makefile.inc
@@ -37,7 +37,7 @@
ramstage-y += madt.c
ramstage-y += smi.c
-smm-y += smihandler.c me.c ../bd82x6x/me_8.x.c ../bd82x6x/finalize.c ../bd82x6x/pch.c
+smm-y += smihandler.c me.c ../bd82x6x/me_8.x.c ../bd82x6x/pch.c
romstage-y += ../bd82x6x/early_usb.c early_smbus.c ../bd82x6x/early_me.c ../bd82x6x/me_status.c ../common/gpio.c early_thermal.c
romstage-y += ../bd82x6x/early_rcba.c
diff --git a/src/southbridge/intel/ibexpeak/pch.h b/src/southbridge/intel/ibexpeak/pch.h
index 55478b9..35bf0ca 100644
--- a/src/southbridge/intel/ibexpeak/pch.h
+++ b/src/southbridge/intel/ibexpeak/pch.h
@@ -51,10 +51,6 @@
#ifndef __ACPI__
#define DEBUG_PERIODIC_SMIS 0
-#if defined(__SMM__) && !defined(__ASSEMBLER__)
-void intel_pch_finalize_smm(void);
-#endif
-
#if !defined(__ASSEMBLER__)
#if !defined(__PRE_RAM__)
#if !defined(__SIMPLE_DEVICE__)
diff --git a/src/southbridge/intel/lynxpoint/Kconfig b/src/southbridge/intel/lynxpoint/Kconfig
index 5b06c4b..b331ba1 100644
--- a/src/southbridge/intel/lynxpoint/Kconfig
+++ b/src/southbridge/intel/lynxpoint/Kconfig
@@ -25,6 +25,7 @@
select SOUTHBRIDGE_INTEL_COMMON_SMBUS
select SOUTHBRIDGE_INTEL_COMMON_SPI
select SOUTHBRIDGE_INTEL_COMMON_ACPI_MADT
+ select SOUTHBRIDGE_INTEL_COMMON_FINALIZE
select IOAPIC
select HAVE_USBDEBUG_OPTIONS
select USE_WATCHDOG_ON_BOOT
diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc
index db34546..c2a49fd 100644
--- a/src/southbridge/intel/lynxpoint/Makefile.inc
+++ b/src/southbridge/intel/lynxpoint/Makefile.inc
@@ -42,7 +42,7 @@
ramstage-$(CONFIG_ELOG) += elog.c
ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smi.c pmutil.c
-smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c me_9.x.c finalize.c pch.c
+smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c me_9.x.c pch.c
smm-$(CONFIG_HAVE_SMI_HANDLER) += pmutil.c usb_ehci.c usb_xhci.c
romstage-y += early_usb.c early_smbus.c early_me.c me_status.c early_pch.c
diff --git a/src/southbridge/intel/lynxpoint/finalize.c b/src/southbridge/intel/lynxpoint/finalize.c
deleted file mode 100644
index 590a245..0000000
--- a/src/southbridge/intel/lynxpoint/finalize.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2012 The Chromium OS Authors. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <arch/io.h>
-#include <device/pci_ops.h>
-#include <console/post_codes.h>
-#include <spi-generic.h>
-#include "me.h"
-#include "pch.h"
-
-void intel_pch_finalize_smm(void)
-{
- /* Lock down Management Engine */
- intel_me_finalize_smm();
-
- /* Set SPI opcode menu */
- RCBA16(0x3894) = SPI_OPPREFIX;
- RCBA16(0x3896) = SPI_OPTYPE;
- RCBA32(0x3898) = SPI_OPMENU_LOWER;
- RCBA32(0x389c) = SPI_OPMENU_UPPER;
-
- /* Lock SPIBAR */
- RCBA32_OR(0x3804, (1 << 15));
-
-#if IS_ENABLED(CONFIG_SPI_FLASH_SMM)
- /* Re-init SPI driver to handle locked BAR */
- spi_init();
-#endif
-
- /* TCLOCKDN: TC Lockdown */
- RCBA32_OR(0x0050, (1UL << 31));
-
- /* BIOS Interface Lockdown */
- RCBA32_OR(0x3410, (1 << 0));
-
- /* Function Disable SUS Well Lockdown */
- RCBA_AND_OR(8, 0x3420, ~0U, (1 << 7));
-
- /* Global SMI Lock */
- pci_or_config16(PCH_LPC_DEV, 0xa0, 1 << 4);
-
- /* GEN_PMCON Lock */
- pci_or_config8(PCH_LPC_DEV, 0xa6, (1 << 1) | (1 << 2));
-
- /* PMSYNC */
- RCBA32_OR(PMSYNC_CONFIG, (1UL << 31));
-
- /* R/WO registers */
- RCBA32(0x21a4) = RCBA32(0x21a4);
- pci_write_config32(PCI_DEV(0, 27, 0), 0x74,
- pci_read_config32(PCI_DEV(0, 27, 0), 0x74));
-
- /* Indicate finalize step with post code */
- outb(POST_OS_BOOT, 0x80);
-}
diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c
index 437db81..d914636 100644
--- a/src/southbridge/intel/lynxpoint/lpc.c
+++ b/src/southbridge/intel/lynxpoint/lpc.c
@@ -969,6 +969,11 @@
static void lpc_final(struct device *dev)
{
+ RCBA16(0x3894) = SPI_OPPREFIX;
+ RCBA16(0x3896) = SPI_OPTYPE;
+ RCBA32(0x3898) = SPI_OPMENU_LOWER;
+ RCBA32(0x389c) = SPI_OPMENU_UPPER;
+
if (acpi_is_wakeup_s3() || IS_ENABLED(CONFIG_INTEL_CHIPSET_LOCKDOWN))
outb(APM_CNT_FINALIZE, APM_CNT);
}
diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
index a02be81..a28d703 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -92,7 +92,6 @@
#ifndef __ACPI__
#if defined(__SMM__) && !defined(__ASSEMBLER__)
-void intel_pch_finalize_smm(void);
void usb_ehci_sleep_prepare(pci_devfn_t dev, u8 slp_typ);
void usb_ehci_disable(pci_devfn_t dev);
void usb_xhci_sleep_prepare(pci_devfn_t dev, u8 slp_typ);
diff --git a/src/southbridge/intel/lynxpoint/smihandler.c b/src/southbridge/intel/lynxpoint/smihandler.c
index 12e5ea2..a3965d0 100644
--- a/src/southbridge/intel/lynxpoint/smihandler.c
+++ b/src/southbridge/intel/lynxpoint/smihandler.c
@@ -25,8 +25,10 @@
#include <elog.h>
#include <halt.h>
#include <pc80/mc146818rtc.h>
+#include <southbridge/intel/common/finalize.h>
#include <northbridge/intel/haswell/haswell.h>
#include <cpu/intel/haswell/haswell.h>
+#include "me.h"
#include "pch.h"
#include "nvs.h"
@@ -284,6 +286,7 @@
return;
}
+ intel_me_finalize_smm();
intel_pch_finalize_smm();
intel_northbridge_haswell_finalize_smm();
intel_cpu_haswell_finalize_smm();