V Sowmya has uploaded this change for review. ( https://review.coreboot.org/22607
Change subject: soc/intel/common: Add Intel SRAM common code support
......................................................................
soc/intel/common: Add Intel SRAM common code support
Add SRAM code support in intel/common/block to read
and use fixed resources on BAR0 and BAR2 for SRAM.
Change-Id: I7870a3ca09ac7b57eb551d5eb42d8361d22f362a
Signed-off-by: V Sowmya <v.sowmya(a)intel.com>
---
A src/soc/intel/common/block/sram/Kconfig
A src/soc/intel/common/block/sram/Makefile.inc
A src/soc/intel/common/block/sram/sram.c
3 files changed, 78 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/07/22607/1
diff --git a/src/soc/intel/common/block/sram/Kconfig b/src/soc/intel/common/block/sram/Kconfig
new file mode 100644
index 0000000..bfd1a8a
--- /dev/null
+++ b/src/soc/intel/common/block/sram/Kconfig
@@ -0,0 +1,4 @@
+config SOC_INTEL_COMMON_BLOCK_SRAM
+ bool
+ help
+ Intel Processor common SRAM support
diff --git a/src/soc/intel/common/block/sram/Makefile.inc b/src/soc/intel/common/block/sram/Makefile.inc
new file mode 100644
index 0000000..a490d91
--- /dev/null
+++ b/src/soc/intel/common/block/sram/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SRAM) += sram.c
diff --git a/src/soc/intel/common/block/sram/sram.c b/src/soc/intel/common/block/sram/sram.c
new file mode 100644
index 0000000..ab51c07
--- /dev/null
+++ b/src/soc/intel/common/block/sram/sram.c
@@ -0,0 +1,73 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 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.
+ */
+
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <soc/pci_devs.h>
+#include <soc/iomap.h>
+
+static void read_resources(device_t dev)
+{
+ struct resource *res;
+ pci_dev_read_resources(dev);
+
+ res = new_resource(dev, PCI_BASE_ADDRESS_0);
+ res->base = SRAM_BASE_0;
+ res->size = SRAM_SIZE_0;
+ res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+ res = new_resource(dev, PCI_BASE_ADDRESS_2);
+ res->base = SRAM_BASE_2;
+ res->size = SRAM_SIZE_2;
+ res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+}
+
+static void set_resources(device_t dev)
+{
+ struct resource *res;
+ pci_dev_set_resources(dev);
+
+ res = find_resource(dev, PCI_BASE_ADDRESS_0);
+ pci_write_config32(dev, res->index, res->base);
+ dev->command |= PCI_COMMAND_MEMORY;
+ res->flags |= IORESOURCE_STORED;
+ report_resource_stored(dev, res, " SRAM BAR 0");
+
+ res = find_resource(dev, PCI_BASE_ADDRESS_2);
+ pci_write_config32(dev, res->index, res->base);
+ dev->command |= PCI_COMMAND_MEMORY;
+ res->flags |= IORESOURCE_STORED;
+ report_resource_stored(dev, res, " SRAM BAR 2");
+}
+
+static const struct device_operations device_ops = {
+ .read_resources = read_resources,
+ .set_resources = set_resources,
+ .enable_resources = pci_dev_enable_resources,
+};
+
+static const unsigned short pci_device_ids[] = {
+ PCI_DEVICE_ID_INTEL_APL_SRAM,
+ PCI_DEVICE_ID_INTEL_GLK_SRAM,
+ 0,
+};
+
+static const struct pci_driver pmc __pci_driver = {
+ .ops = &device_ops,
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .devices = pci_device_ids,
+};
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I7870a3ca09ac7b57eb551d5eb42d8361d22f362a
Gerrit-Change-Number: 22607
Gerrit-PatchSet: 1
Gerrit-Owner: V Sowmya <v.sowmya(a)intel.com>