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-rw-r--r--payloads/libpayload/include/coreboot_tables.h7
-rw-r--r--payloads/libpayload/include/sysinfo.h1
-rw-r--r--payloads/libpayload/libc/coreboot.c10
3 files changed, 18 insertions, 0 deletions
diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h
index 1d38c19a80f1..a8fd5cd32174 100644
--- a/payloads/libpayload/include/coreboot_tables.h
+++ b/payloads/libpayload/include/coreboot_tables.h
@@ -84,6 +84,7 @@ enum {
CB_TAG_ACPI_CNVS = 0x0041,
CB_TAG_TYPE_C_INFO = 0x0042,
CB_TAG_ACPI_RSDP = 0x0043,
+ CB_TAG_PCIE = 0x0044,
CB_TAG_CMOS_OPTION_TABLE = 0x00c8,
CB_TAG_OPTION = 0x00c9,
CB_TAG_OPTION_ENUM = 0x00ca,
@@ -265,6 +266,12 @@ struct cb_gpios {
struct cb_gpio gpios[0];
};
+struct cb_pcie {
+ uint32_t tag;
+ uint32_t size;
+ cb_uint64_t ctrl_base; /* Base address of PCIe controller */
+};
+
struct lb_range {
uint32_t tag;
uint32_t size;
diff --git a/payloads/libpayload/include/sysinfo.h b/payloads/libpayload/include/sysinfo.h
index c8c10524f4f0..12d8a13e3fb0 100644
--- a/payloads/libpayload/include/sysinfo.h
+++ b/payloads/libpayload/include/sysinfo.h
@@ -84,6 +84,7 @@ struct sysinfo_t {
uintptr_t linker;
uintptr_t assembler;
uintptr_t mem_chip_base;
+ uintptr_t pcie_ctrl_base; /* Base address of PCIe controller */
uintptr_t cb_version;
diff --git a/payloads/libpayload/libc/coreboot.c b/payloads/libpayload/libc/coreboot.c
index cdd6a437b683..bcc9530733bb 100644
--- a/payloads/libpayload/libc/coreboot.c
+++ b/payloads/libpayload/libc/coreboot.c
@@ -264,6 +264,13 @@ static void cb_parse_cbmem_entry(void *ptr, struct sysinfo_t *info)
}
}
+static void cb_parse_pcie(void *ptr, struct sysinfo_t *info)
+{
+ const struct cb_pcie *pcie = ptr;
+
+ info->pcie_ctrl_base = pcie->ctrl_base;
+}
+
static void cb_parse_rsdp(void *ptr, struct sysinfo_t *info)
{
const struct cb_acpi_rsdp *cb_acpi_rsdp = ptr;
@@ -413,6 +420,9 @@ int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
case CB_TAG_ACPI_RSDP:
cb_parse_rsdp(ptr, info);
break;
+ case CB_TAG_PCIE:
+ cb_parse_pcie(ptr, info);
+ break;
default:
cb_parse_arch_specific(rec, info);
break;