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authorSimon Glass <sjg@chromium.org>2014-11-12 22:42:13 -0700
committerSimon Glass <sjg@chromium.org>2014-11-21 07:34:12 +0100
commit6e5b12b6144acd83dcfb4a79ea0beff787f3f545 (patch)
tree2cbf6620bcd926e3de2d4cc0531efc05ee47723e /arch/x86/cpu/ivybridge
parent7430f1086429fa93e80c3951baac90e1c578898a (diff)
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x86: ivybridge: Enable PCI in early init
Enable PCI so we can access devices that need to be set up before relocation. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/cpu/ivybridge')
-rw-r--r--arch/x86/cpu/ivybridge/Makefile1
-rw-r--r--arch/x86/cpu/ivybridge/cpu.c6
-rw-r--r--arch/x86/cpu/ivybridge/pci.c60
3 files changed, 67 insertions, 0 deletions
diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile
index dbcd4bd..6d0a78d 100644
--- a/arch/x86/cpu/ivybridge/Makefile
+++ b/arch/x86/cpu/ivybridge/Makefile
@@ -6,4 +6,5 @@
obj-y += car.o
obj-y += cpu.o
+obj-y += pci.o
obj-y += sdram.o
diff --git a/arch/x86/cpu/ivybridge/cpu.c b/arch/x86/cpu/ivybridge/cpu.c
index 5863811..ff6b7b3 100644
--- a/arch/x86/cpu/ivybridge/cpu.c
+++ b/arch/x86/cpu/ivybridge/cpu.c
@@ -12,6 +12,7 @@
#include <common.h>
#include <asm/cpu.h>
+#include <asm/pci.h>
#include <asm/post.h>
#include <asm/processor.h>
@@ -19,6 +20,7 @@ DECLARE_GLOBAL_DATA_PTR;
int arch_cpu_init(void)
{
+ struct pci_controller *hose;
int ret;
post_code(POST_CPU_INIT);
@@ -28,6 +30,10 @@ int arch_cpu_init(void)
if (ret)
return ret;
+ ret = pci_early_init_hose(&hose);
+ if (ret)
+ return ret;
+
return 0;
}
diff --git a/arch/x86/cpu/ivybridge/pci.c b/arch/x86/cpu/ivybridge/pci.c
new file mode 100644
index 0000000..c1ae658
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/pci.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2008,2009
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <asm/pci.h>
+
+static void config_pci_bridge(struct pci_controller *hose, pci_dev_t dev,
+ struct pci_config_table *table)
+{
+ u8 secondary;
+
+ hose->read_byte(hose, dev, PCI_SECONDARY_BUS, &secondary);
+ if (secondary != 0)
+ pci_hose_scan_bus(hose, secondary);
+}
+
+static struct pci_config_table pci_ivybridge_config_table[] = {
+ /* vendor, device, class, bus, dev, func */
+ { PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_PCI,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, &config_pci_bridge },
+ {}
+};
+
+void board_pci_setup_hose(struct pci_controller *hose)
+{
+ hose->config_table = pci_ivybridge_config_table;
+ hose->first_busno = 0;
+ hose->last_busno = 0;
+
+ /* PCI memory space */
+ pci_set_region(hose->regions + 0,
+ CONFIG_PCI_MEM_BUS,
+ CONFIG_PCI_MEM_PHYS,
+ CONFIG_PCI_MEM_SIZE,
+ PCI_REGION_MEM);
+
+ /* PCI IO space */
+ pci_set_region(hose->regions + 1,
+ CONFIG_PCI_IO_BUS,
+ CONFIG_PCI_IO_PHYS,
+ CONFIG_PCI_IO_SIZE,
+ PCI_REGION_IO);
+
+ pci_set_region(hose->regions + 2,
+ CONFIG_PCI_PREF_BUS,
+ CONFIG_PCI_PREF_PHYS,
+ CONFIG_PCI_PREF_SIZE,
+ PCI_REGION_PREFETCH);
+
+ hose->region_count = 3;
+}