Patch set updated for coreboot: soc/intel/apollolake: Add handling of GNVS ACPI entry fo CHROMES builds

[Andrey Petrov]

Andrey Petrov ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14471

-gerrit

commit c0025f10b795f49edc20272cc020ae38f00c33d5
Author: Lance Zhao 
Date:   Tue Apr 19 18:04:21 2016 -0700

soc/intel/apollolake: Add handling of GNVS ACPI entry fo CHROMES builds

Add chromeos required GNVS feature. The GNVS table stays in both CBMEM
    and ACPI DSDT tables.

Change-Id: I4db0eb18d2de62917a94704318a7896c04e4777f
    Signed-off-by: Andrey Petrov 
---
 src/soc/intel/apollolake/acpi.c             | 29 ++++++++++++++++++++++
 src/soc/intel/apollolake/include/soc/acpi.h |  2 ++
 src/soc/intel/apollolake/include/soc/nvs.h  | 37 +++++++++++++++++++++++++++++
 src/soc/intel/apollolake/lpc.c              |  8 +++++++
 4 files changed, 76 insertions(+)

diff --git a/src/soc/intel/apollolake/acpi.c b/src/soc/intel/apollolake/acpi.c
index 7d28313..a300417 100644
--- a/src/soc/intel/apollolake/acpi.c
+++ b/src/soc/intel/apollolake/acpi.c
@@ -16,12 +16,15 @@
  */

#include <arch/acpi.h>
+#include <arch/acpigen.h>
 #include <arch/ioapic.h>
 #include <arch/smp/mpspec.h>
+#include <cbmem.h>
 #include <cpu/x86/smm.h>
 #include <soc/acpi.h>
 #include <soc/iomap.h>
 #include <soc/pm.h>
+#include <soc/nvs.h>

unsigned long acpi_fill_mcfg(unsigned long current)
 {
@@ -125,3 +128,29 @@ unsigned long southbridge_write_acpi_tables(device_t device,
 {
    return acpi_write_hpet(device, current, rsdp);
 }
+
+static void acpi_create_gnvs(struct global_nvs_t *gnvs)
+{
+	if(IS_ENABLED(CONFIG_CHROMEOS)) {
+		/* Initialize Verified Boot data */
+		chromeos_init_vboot(&(gnvs->chromeos));
+		gnvs->chromeos.vbt2 = ACTIVE_ECFW_RO;
+	}
+}
+
+void southbridge_inject_dsdt(device_t device)
+{
+	struct global_nvs_t *gnvs;
+
+	gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
+
+	if (gnvs) {
+		acpi_create_gnvs(gnvs);
+		acpi_save_gnvs((unsigned long)gnvs);
+
+		/* Add it to DSDT.  */
+		acpigen_write_scope("\");
+		acpigen_write_name_dword("NVSA", (uint32_t)gnvs);
+		acpigen_pop_len();
+	}
+}
diff --git a/src/soc/intel/apollolake/include/soc/acpi.h b/src/soc/intel/apollolake/include/soc/acpi.h
index 2d20805..3605cc3 100644
--- a/src/soc/intel/apollolake/include/soc/acpi.h
+++ b/src/soc/intel/apollolake/include/soc/acpi.h
@@ -25,4 +25,6 @@ void soc_fill_common_fadt(acpi_fadt_t * fadt);
 unsigned long southbridge_write_acpi_tables(device_t device,
    	unsigned long current, struct acpi_rsdp *rsdp);

+void southbridge_inject_dsdt(device_t device);
+
 #endif	/* _SOC_APOLLOLAKE_ACPI_H_ */
diff --git a/src/soc/intel/apollolake/include/soc/nvs.h b/src/soc/intel/apollolake/include/soc/nvs.h
new file mode 100644
index 0000000..8b3a3af
--- /dev/null
+++ b/src/soc/intel/apollolake/include/soc/nvs.h
@@ -0,0 +1,37 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Intel Corp.
+ * (Written by Lance Zhao  for Intel Corp.)
+ *
+ * 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.
+ */
+
+/*
+ * NOTE: The layout of the global_nvs_t structure below must match the layout
+ * in soc/intel/apollolake/acpi/globalnvs.asl !!!
+ *
+ */
+
+#ifndef _SOC_APOLLOLAKE_NVS_H_
+#define _SOC_APOLLOLAKE_NVS_H_
+
+#include <vendorcode/google/chromeos/gnvs.h>
+
+struct global_nvs_t {
+	/* Miscellaneous */
+	uint8_t unused[256];
+
+	/* ChromeOS specific (0x100 - 0xfff) */
+	chromeos_acpi_t chromeos;
+} __attribute__((packed));
+
+#endif	/* _SOC_APOLLOLAKE_NVS_H_ */
diff --git a/src/soc/intel/apollolake/lpc.c b/src/soc/intel/apollolake/lpc.c
index 6e366e0..628f190 100644
--- a/src/soc/intel/apollolake/lpc.c
+++ b/src/soc/intel/apollolake/lpc.c
@@ -15,10 +15,12 @@
  * GNU General Public License for more details.
  */

+#include <cbmem.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <soc/acpi.h>
+#include <soc/nvs.h>
 #include <soc/pci_ids.h>
 #include <reg_script.h>
 #include <vendorcode/google/chromeos/chromeos.h>
@@ -74,11 +76,16 @@ static void soc_lpc_add_io_resources(device_t dev)

static void soc_lpc_read_resources(device_t dev)
 {
+	struct global_nvs_t *gnvs;
+
    /* Get the PCI resources of this device. */
    pci_dev_read_resources(dev);

/* Add IO resources to LPC. */
    soc_lpc_add_io_resources(dev);
+
+	/* Allocate ACPI NVS in CBMEM */
+	gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
 }

static struct device_operations device_ops = {
@@ -86,6 +93,7 @@ static struct device_operations device_ops = {
    .set_resources = &pci_dev_set_resources,
    .enable_resources = &pci_dev_enable_resources,
    .write_acpi_tables = southbridge_write_acpi_tables,
+	.acpi_inject_dsdt_generator = southbridge_inject_dsdt,
    .init = &lpc_init
 };