haswell boards: use libre mrc.bin replacement

courtesy of Angel Pons from the coreboot project

this uses the following patch set from gerrit, as yet
unmerged (in coreboot master) on this date:

    https://review.coreboot.org/c/coreboot/+/64198/5

logic for downloading mrc blobs has been deleted from
lbmk, as this is now completely obsolete (for haswell
boards)

if other platforms are added later that need mrc.bin,
then logic will be re-added again for that

1 files changed, 128 insertions, 0 deletions

diff --git a/resources/coreboot/haswell/patches/0006-sb-intel-lynxpoint-Add-native-thermal-init.patch b/resources/coreboot/haswell/patches/0006-sb-intel-lynxpoint-Add-native-thermal-init.patch
new file mode 100644
index 00000000..157d2999
--- /dev/null
+++ b/resources/coreboot/haswell/patches/0006-sb-intel-lynxpoint-Add-native-thermal-init.patch
@@ -0,0 +1,128 @@
+From 92be49d8422b4bc1c89bb49535f4dc6a01d47295 Mon Sep 17 00:00:00 2001
+From: Angel Pons <th3fanbus@gmail.com>
+Date: Fri, 6 May 2022 23:22:11 +0200
+Subject: [PATCH 06/26] sb/intel/lynxpoint: Add native thermal init
+
+Implement native thermal initialisation for Lynx Point. This is only
+needed when MRC.bin is not used.
+
+Change-Id: I4a67a3092d0c2e56bfdacb513a899ef838193cbd
+Signed-off-by: Angel Pons <th3fanbus@gmail.com>
+---
+ .../haswell/native_raminit/raminit_native.c   |  1 +
+ src/southbridge/intel/lynxpoint/Makefile.inc  |  2 +-
+ src/southbridge/intel/lynxpoint/pch.h         |  1 +
+ src/southbridge/intel/lynxpoint/thermal.c     | 64 +++++++++++++++++++
+ 4 files changed, 67 insertions(+), 1 deletion(-)
+ create mode 100644 src/southbridge/intel/lynxpoint/thermal.c
+
+diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.c b/src/northbridge/intel/haswell/native_raminit/raminit_native.c
+index ef61d4ee09..dd1f1ec14e 100644
+--- a/src/northbridge/intel/haswell/native_raminit/raminit_native.c
++++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.c
+@@ -16,6 +16,7 @@ static bool early_init_native(int s3resume)
+ 	/** TODO: CPU replacement check must be skipped in warm boots and S3 resumes **/
+ 	const bool cpu_replaced = !s3resume && intel_early_me_cpu_replacement_check();
+ 
++	early_thermal_init();
+ 	early_usb_init();
+ 
+ 	if (!CONFIG(INTEL_LYNXPOINT_LP))
+diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc
+index 0e1f2fe4eb..a9a9b153d6 100644
+--- a/src/southbridge/intel/lynxpoint/Makefile.inc
++++ b/src/southbridge/intel/lynxpoint/Makefile.inc
+@@ -37,7 +37,7 @@ bootblock-y += early_pch.c
+ romstage-y += early_usb.c early_me.c me_status.c early_pch.c
+ romstage-y += pmutil.c
+ 
+-romstage-$(CONFIG_USE_NATIVE_RAMINIT) += early_pch_native.c early_usb_native.c iobp.c
++romstage-$(CONFIG_USE_NATIVE_RAMINIT) += early_pch_native.c early_usb_native.c iobp.c thermal.c
+ 
+ ifeq ($(CONFIG_INTEL_LYNXPOINT_LP),y)
+ romstage-y += lp_gpio.c
+diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
+index ad983d86cf..38a9349220 100644
+--- a/src/southbridge/intel/lynxpoint/pch.h
++++ b/src/southbridge/intel/lynxpoint/pch.h
+@@ -116,6 +116,7 @@ enum pch_platform_type {
+ void pch_dmi_setup_physical_layer(void);
+ void pch_dmi_tc_vc_mapping(u32 vc0, u32 vc1, u32 vcp, u32 vcm);
+ void early_usb_init(void);
++void early_thermal_init(void);
+ 
+ void usb_ehci_sleep_prepare(pci_devfn_t dev, u8 slp_typ);
+ void usb_ehci_disable(pci_devfn_t dev);
+diff --git a/src/southbridge/intel/lynxpoint/thermal.c b/src/southbridge/intel/lynxpoint/thermal.c
+new file mode 100644
+index 0000000000..e71969ea0c
+--- /dev/null
++++ b/src/southbridge/intel/lynxpoint/thermal.c
+@@ -0,0 +1,64 @@
++/* SPDX-License-Identifier: GPL-2.0-or-later */
++
++#include <device/mmio.h>
++#include <device/pci_ops.h>
++#include <southbridge/intel/lynxpoint/pch.h>
++#include <types.h>
++
++#define TBARB_TEMP 0x40000000
++
++#define THERMAL_DEV PCI_DEV(0, 0x1f, 6)
++
++/* Early thermal init, it may need to be done prior to giving ME its memory */
++void early_thermal_init(void)
++{
++	/* Program address for temporary BAR */
++	pci_write_config32(THERMAL_DEV, 0x40, TBARB_TEMP);
++	pci_write_config32(THERMAL_DEV, 0x44, 0);
++
++	/* Activate temporary BAR */
++	pci_or_config32(THERMAL_DEV, 0x40, 1);
++
++	/*
++	 * BWG section 17.3.1 says:
++	 *
++	 * ### Initializing Lynx Point Thermal Sensors ###
++	 *
++	 * The System BIOS must perform the following steps to initialize the Lynx
++	 * Point thermal subsystem device, D31:F6. The System BIOS is required to
++	 * repeat this process on a resume from Sx. BIOS may enable any or all of
++	 * the registers below based on OEM's platform configuration. Intel does
++	 * not recommend a value on some of the registers, since each platform has
++	 * different temperature trip points and one may enable a trip to cause an
++	 * SMI while another platform would cause an interrupt instead.
++	 *
++	 * The recommended flow for enabling thermal sensor is by setting up various
++	 * temperature trip points first, followed by enabling the desired trip
++	 * alert method and then enable the actual sensors from TSEL registers.
++	 * If this flow is not followed, software will need to take special care
++	 * to handle false events during setting up those registers.
++	 */
++
++	/* Step 1: Program CTT */
++	write16p(TBARB_TEMP + 0x10, 0x0154);
++
++	/* Step 2: Clear trip status from TSS and TAS */
++	write8p(TBARB_TEMP + 0x06, 0xff);
++	write8p(TBARB_TEMP + 0x80, 0xff);
++
++	/* Step 3: Program TSGPEN and TSPIEN to zero */
++	write8p(TBARB_TEMP + 0x84, 0x00);
++	write8p(TBARB_TEMP + 0x82, 0x00);
++
++	/*
++	 * Step 4: If thermal reporting to an EC over SMBus is supported,
++	 *         then write 0x01 to TSREL, else leave at default.
++	 */
++	write8p(TBARB_TEMP + 0x0a, 0x01);
++
++	/* Disable temporary BAR */
++	pci_and_config32(THERMAL_DEV, 0x40, ~1);
++
++	/* Clear temporary BAR address */
++	pci_write_config32(THERMAL_DEV, 0x40, 0);
++}
+-- 
+2.39.2
+