diff options
| -rw-r--r-- | src/soc/amd/common/fsp/pci/Kconfig | 5 | ||||
| -rw-r--r-- | src/soc/amd/common/fsp/pci/Makefile.inc | 5 | ||||
| -rw-r--r-- | src/soc/amd/common/fsp/pci/pci_routing_info.c | 41 |
3 files changed, 51 insertions, 0 deletions
diff --git a/src/soc/amd/common/fsp/pci/Kconfig b/src/soc/amd/common/fsp/pci/Kconfig new file mode 100644 index 000000000000..9d6596cc8927 --- /dev/null +++ b/src/soc/amd/common/fsp/pci/Kconfig @@ -0,0 +1,5 @@ +config SOC_AMD_COMMON_FSP_PCI + bool + select SOC_AMD_COMMON_BLOCK_PCI + help + This option enabled FSP to provide common PCI functions. diff --git a/src/soc/amd/common/fsp/pci/Makefile.inc b/src/soc/amd/common/fsp/pci/Makefile.inc new file mode 100644 index 000000000000..cc1377a42c45 --- /dev/null +++ b/src/soc/amd/common/fsp/pci/Makefile.inc @@ -0,0 +1,5 @@ +ifeq ($(CONFIG_SOC_AMD_COMMON_FSP_PCI),y) + +ramstage-y += pci_routing_info.c + +endif # CONFIG_SOC_AMD_COMMON_FSP_PCI diff --git a/src/soc/amd/common/fsp/pci/pci_routing_info.c b/src/soc/amd/common/fsp/pci/pci_routing_info.c new file mode 100644 index 000000000000..21423da210d2 --- /dev/null +++ b/src/soc/amd/common/fsp/pci/pci_routing_info.c @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <amdblocks/amd_pci_util.h> +#include <console/console.h> +#include <device/pci_def.h> +#include <fsp/util.h> +#include <FspGuids.h> +#include <types.h> + +const struct pci_routing_info *get_pci_routing_table(size_t *entries) +{ + static const struct pci_routing_info *routing_table; + static size_t routing_table_entries; + + size_t hob_size = 0; + + if (routing_table) { + *entries = routing_table_entries; + return routing_table; + } + + routing_table = fsp_find_extension_hob_by_guid(AMD_FSP_PCIE_DEVFUNC_REMAP_HOB_GUID.b, + &hob_size); + + if (routing_table == NULL || hob_size == 0) { + printk(BIOS_ERR, "Couldn't find PCIe routing HOB.\n"); + return NULL; + } + + routing_table_entries = hob_size / sizeof(struct pci_routing_info); + + for (size_t i = 0; i < routing_table_entries; ++i) { + printk(BIOS_DEBUG, "%02x.%x: group: %u, swizzle: %u, irq: %u\n", + PCI_SLOT(routing_table[i].devfn), PCI_FUNC(routing_table[i].devfn), + routing_table[i].group, routing_table[i].swizzle, routing_table[i].irq); + } + + *entries = routing_table_entries; + + return routing_table; +} |