haswell (lenovo t440p/w541): fix S3 suspend/resume

MRC caches in a certain way, that Heads was able to work
around in their build system, for this board.

I've adapted the relevant config differences, from their project
as of heads revision 96440b928acb06de5b925ea12014c9c280b23165

The downside is that CBFS now has to be 8MB in size. The upside
is that the machine also boots much faster

See:

    https://github.com/osresearch/heads/pull/1282/commits/f0792117efa177ded19878f652c5a28e8cc62a71

    https://github.com/osresearch/heads/pull/1282#issuecomment-1400634600

I have not adapted their IFD changes, versus Libreboot, because theirs
simply has a different version string, and uses different read/write
permission bits for regions as defined in the IFD.

This affects:

    t440p_12mb_mrc

    w541_12mb_mrc

S3 suspend/resume still broken on these targets which use the libre
MRC init (replacement code by Angel Pons, recently merged in lbmk):

    t440p_12mb

    w541_12mb

With clever use of FMAP, the rest of the BIOS region might still be
used. However, for our purposes, 8MB CBFS will do just fine.

Heads's changes configure MRC so that caching is handled properly,
for when the machine returns from sleep. Setting CBFS to be any
higher will result in slower boot times, and broken S3 resume, due
to MRC cache misalignment (this is based on my understanding, reading
through the Heads project looking at their research on this).

At some point in the future, Angel's libre MRC code will probably
be finished, and merged, with more fine tuning possible to allow
bigger CBFS sizes.

2 files changed, 16 insertions, 27 deletions

diff --git a/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_corebootfb b/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_corebootfb
index d2ca4f6e..dc9df542 100644
--- a/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_corebootfb
+++ b/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_corebootfb
@@ -109,15 +109,13 @@ CONFIG_VGA_BIOS_ID="8086,0416"
 CONFIG_DIMM_MAX=4
 CONFIG_DIMM_SPD_SIZE=256
 CONFIG_FMDFILE=""
-# CONFIG_NO_POST is not set
+CONFIG_NO_POST=y
 CONFIG_MAINBOARD_VENDOR="LENOVO"
-CONFIG_CBFS_SIZE=0xBE0000
+CONFIG_CBFS_SIZE=0x800000
 CONFIG_LINEAR_FRAMEBUFFER_MAX_HEIGHT=1600
 CONFIG_LINEAR_FRAMEBUFFER_MAX_WIDTH=2560
 CONFIG_MAX_CPUS=8
 # CONFIG_ONBOARD_VGA_IS_PRIMARY is not set
-CONFIG_POST_DEVICE=y
-CONFIG_POST_IO=y
 CONFIG_DEVICETREE="variants/$(CONFIG_VARIANT_DIR)/devicetree.cb"
 # CONFIG_VBOOT is not set
 CONFIG_VBOOT_VBNV_OFFSET=0x2a
@@ -131,7 +129,6 @@ CONFIG_CMOS_DEFAULT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.default"
 CONFIG_CMOS_LAYOUT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.layout"
 CONFIG_USBDEBUG_HCD_INDEX=2
 CONFIG_BOOT_DEVICE_SPI_FLASH_BUS=0
-# CONFIG_CONSOLE_POST is not set
 CONFIG_TPM_PIRQ=0x0
 CONFIG_MEMLAYOUT_LD_FILE="src/arch/x86/memlayout.ld"
 CONFIG_DCACHE_RAM_BASE=0xff7c0000
@@ -154,9 +151,6 @@ CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x20000
 CONFIG_PCIEXP_AER=y
 CONFIG_MAINBOARD_SMBIOS_PRODUCT_NAME="ThinkPad T440p"
 CONFIG_HAVE_IFD_BIN=y
-CONFIG_PCIEXP_HOTPLUG_BUSES=8
-CONFIG_PCIEXP_HOTPLUG_MEM=0x800000
-CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x10000000
 CONFIG_BOARD_LENOVO_THINKPAD_T440P=y
 # CONFIG_BOARD_LENOVO_THINKPAD_W541 is not set
 # CONFIG_BOARD_LENOVO_L520 is not set
@@ -200,8 +194,8 @@ CONFIG_PS2M_EISAID="LEN0036"
 CONFIG_THINKPADEC_HKEY_EISAID="LEN0068"
 CONFIG_GFX_GMA_PANEL_1_PORT="eDP"
 # CONFIG_DEBUG_SMI is not set
-# CONFIG_PCIEXP_L1_SUB_STATE is not set
-# CONFIG_PCIEXP_CLK_PM is not set
+CONFIG_PCIEXP_L1_SUB_STATE=y
+CONFIG_PCIEXP_CLK_PM=y
 # CONFIG_DRIVERS_UART_8250IO is not set
 CONFIG_HEAP_SIZE=0x4000
 CONFIG_EC_GPE_SCI=0x50
@@ -319,7 +313,7 @@ CONFIG_HASWELL_HIDE_PEG_FROM_MRC=y
 # Southbridge
 #
 CONFIG_SOUTH_BRIDGE_OPTIONS=y
-CONFIG_PCIEXP_HOTPLUG=y
+# CONFIG_PCIEXP_HOTPLUG is not set
 CONFIG_INTEL_DESCRIPTOR_MODE_REQUIRED=y
 CONFIG_SOUTHBRIDGE_INTEL_LYNXPOINT=y
 CONFIG_FINALIZE_USB_ROUTE_XHCI=y
@@ -355,8 +349,8 @@ CONFIG_RCBA_LENGTH=0x4000
 #
 CONFIG_EC_ACPI=y
 CONFIG_EC_LENOVO_H8=y
-# CONFIG_H8_BEEP_ON_DEATH is not set
-# CONFIG_H8_FLASH_LEDS_ON_DEATH is not set
+CONFIG_H8_BEEP_ON_DEATH=y
+CONFIG_H8_FLASH_LEDS_ON_DEATH=y
 # CONFIG_H8_SUPPORT_BT_ON_WIFI is not set
 # CONFIG_H8_FN_CTRL_SWAP is not set
 CONFIG_H8_HAS_BAT_THRESHOLDS_IMPL=y
@@ -497,7 +491,7 @@ CONFIG_GFX_GMA_ANALOG_I2C_PORT="PCH_DAC"
 # CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
 # CONFIG_DRIVERS_PS2_KEYBOARD is not set
 CONFIG_DRIVERS_MC146818=y
-# CONFIG_USE_PC_CMOS_ALTCENTURY is not set
+CONFIG_USE_PC_CMOS_ALTCENTURY=y
 CONFIG_MEMORY_MAPPED_TPM=y
 CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000
 # CONFIG_DRIVERS_SIL_3114 is not set
diff --git a/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_txtmode b/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_txtmode
index f30f4596..3148ca53 100644
--- a/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_txtmode
+++ b/resources/coreboot/t440p_12mb_mrc/config/libgfxinit_txtmode
@@ -109,13 +109,11 @@ CONFIG_VGA_BIOS_ID="8086,0416"
 CONFIG_DIMM_MAX=4
 CONFIG_DIMM_SPD_SIZE=256
 CONFIG_FMDFILE=""
-# CONFIG_NO_POST is not set
+CONFIG_NO_POST=y
 CONFIG_MAINBOARD_VENDOR="LENOVO"
-CONFIG_CBFS_SIZE=0xBE0000
+CONFIG_CBFS_SIZE=0x800000
 CONFIG_MAX_CPUS=8
 # CONFIG_ONBOARD_VGA_IS_PRIMARY is not set
-CONFIG_POST_DEVICE=y
-CONFIG_POST_IO=y
 CONFIG_DEVICETREE="variants/$(CONFIG_VARIANT_DIR)/devicetree.cb"
 # CONFIG_VBOOT is not set
 CONFIG_VBOOT_VBNV_OFFSET=0x2a
@@ -152,9 +150,6 @@ CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x20000
 CONFIG_PCIEXP_AER=y
 CONFIG_MAINBOARD_SMBIOS_PRODUCT_NAME="ThinkPad T440p"
 CONFIG_HAVE_IFD_BIN=y
-CONFIG_PCIEXP_HOTPLUG_BUSES=8
-CONFIG_PCIEXP_HOTPLUG_MEM=0x800000
-CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x10000000
 CONFIG_BOARD_LENOVO_THINKPAD_T440P=y
 # CONFIG_BOARD_LENOVO_THINKPAD_W541 is not set
 # CONFIG_BOARD_LENOVO_L520 is not set
@@ -198,8 +193,8 @@ CONFIG_PS2M_EISAID="LEN0036"
 CONFIG_THINKPADEC_HKEY_EISAID="LEN0068"
 CONFIG_GFX_GMA_PANEL_1_PORT="eDP"
 # CONFIG_DEBUG_SMI is not set
-# CONFIG_PCIEXP_L1_SUB_STATE is not set
-# CONFIG_PCIEXP_CLK_PM is not set
+CONFIG_PCIEXP_L1_SUB_STATE=y
+CONFIG_PCIEXP_CLK_PM=y
 # CONFIG_DRIVERS_UART_8250IO is not set
 CONFIG_HEAP_SIZE=0x4000
 CONFIG_EC_GPE_SCI=0x50
@@ -317,7 +312,7 @@ CONFIG_HASWELL_HIDE_PEG_FROM_MRC=y
 # Southbridge
 #
 CONFIG_SOUTH_BRIDGE_OPTIONS=y
-CONFIG_PCIEXP_HOTPLUG=y
+# CONFIG_PCIEXP_HOTPLUG is not set
 CONFIG_INTEL_DESCRIPTOR_MODE_REQUIRED=y
 CONFIG_SOUTHBRIDGE_INTEL_LYNXPOINT=y
 CONFIG_FINALIZE_USB_ROUTE_XHCI=y
@@ -353,8 +348,8 @@ CONFIG_RCBA_LENGTH=0x4000
 #
 CONFIG_EC_ACPI=y
 CONFIG_EC_LENOVO_H8=y
-# CONFIG_H8_BEEP_ON_DEATH is not set
-# CONFIG_H8_FLASH_LEDS_ON_DEATH is not set
+CONFIG_H8_BEEP_ON_DEATH=y
+CONFIG_H8_FLASH_LEDS_ON_DEATH=y
 # CONFIG_H8_SUPPORT_BT_ON_WIFI is not set
 # CONFIG_H8_FN_CTRL_SWAP is not set
 CONFIG_H8_HAS_BAT_THRESHOLDS_IMPL=y
@@ -493,7 +488,7 @@ CONFIG_GFX_GMA_ANALOG_I2C_PORT="PCH_DAC"
 # CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
 # CONFIG_DRIVERS_PS2_KEYBOARD is not set
 CONFIG_DRIVERS_MC146818=y
-# CONFIG_USE_PC_CMOS_ALTCENTURY is not set
+CONFIG_USE_PC_CMOS_ALTCENTURY=y
 CONFIG_MEMORY_MAPPED_TPM=y
 CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000
 CONFIG_VGA=y