Patch set updated for coreboot: pcengines/apu1: Supply TPM modules on the LPC connector

[Tobias Diedrich]

Tobias Diedrich ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12796

-gerrit

commit 8de6e3167b70f6c84b54dc9c1b81d33235fc92cf
Author: Tobias Diedrich 
Date:   Wed Dec 23 23:27:06 2015 +0100

pcengines/apu1: Supply TPM modules on the LPC connector

Since the APU1 has an LPC connector it is possible to
    connect a TPM. I'm using mine mostly for the HWRNG which the
    APU1 lacks.

This takes care of setting up the TPM interrupt.
    Interrupt 5 was chosen since it is not otherwise used on the APU1,
    Alternatively 1, 7, 10-11 and 14-15 should be available as well.
    It may also be possible to share the ACPI interrupt (9).

Previously I was getting frequent
    "genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (tpm0)"
    errors.

With this I also no longer need to use "tpm_tis.force=1" on
    the kernel commandline since the TPM is now declared in the
    ACPI DSDT.

See also https://plus.google.com/+TobiasDiedrich/posts/cRv9MwrCdEa
    and https://plus.google.com/+TobiasDiedrich/posts/BDnJLGFMW8o

Change-Id: Ie732228471f6c40d77e17cbed34726961b1fcddd
    Signed-off-by: Tobias Diedrich 
---
 src/mainboard/pcengines/apu1/Kconfig        | 1 +
 src/mainboard/pcengines/apu1/devicetree.cb  | 5 +++++
 src/southbridge/amd/cimx/sb800/acpi/lpc.asl | 4 ++++
 3 files changed, 10 insertions(+)

diff --git a/src/mainboard/pcengines/apu1/Kconfig b/src/mainboard/pcengines/apu1/Kconfig
index 2328776..5eb9e1c 100644
--- a/src/mainboard/pcengines/apu1/Kconfig
+++ b/src/mainboard/pcengines/apu1/Kconfig
@@ -30,6 +30,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
    select HAVE_CMOS_DEFAULT
    select BOARD_ROMSIZE_KB_2048
    select SPD_CACHE
+	select MAINBOARD_HAS_LPC_TPM

config MAINBOARD_DIR
    string
diff --git a/src/mainboard/pcengines/apu1/devicetree.cb b/src/mainboard/pcengines/apu1/devicetree.cb
index 72e89c0..1a263a2 100644
--- a/src/mainboard/pcengines/apu1/devicetree.cb
+++ b/src/mainboard/pcengines/apu1/devicetree.cb
@@ -43,6 +43,11 @@ chip northbridge/amd/agesa/family14/root_complex
    				device pci 14.1 off end # IDE	0x439c
    				device pci 14.2 off end # HDA	0x4383
    				device pci 14.3 on # LPC		0x439d
+					chip drivers/pc80/tpm # Support TPM on the LPC header.
+						device pnp 0c31.0 on
+							irq 0x70 = 5
+						end
+					end
    				chip superio/nuvoton/nct5104d
    					register "irq_trigger_type" = "0"
    					device pnp 2e.0 off end
diff --git a/src/southbridge/amd/cimx/sb800/acpi/lpc.asl b/src/southbridge/amd/cimx/sb800/acpi/lpc.asl
index 98d5aa5..c2d1ebd 100644
--- a/src/southbridge/amd/cimx/sb800/acpi/lpc.asl
+++ b/src/southbridge/amd/cimx/sb800/acpi/lpc.asl
@@ -77,4 +77,8 @@ Device(LIBR) {
    	})
    } /* End Device(_SB.PCI0.LpcIsaBr.COPR) */
    #include "acpi/superio.asl"
+
+#if CONFIG_MAINBOARD_HAS_LPC_TPM
+	#include <drivers/pc80/tpm/acpi/tpm.asl>
+#endif
 } /* end LIBR */