[U-Boot] [PATCH 4/5] x86: efi-x86_payload: Enumerate PCI bus during early boot

[Bin Meng]

The generic efi payload currently does not enumerate the PCI bus,
which means peripherals on the PCI bus are not discovered by their
drivers. This uses board_early_init_r() to do the PCI enumeration.

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
---

 board/efi/efi-x86_payload/Kconfig   |  1 +
 board/efi/efi-x86_payload/Makefile  |  2 +-
 board/efi/efi-x86_payload/payload.c | 18 ++++++++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 board/efi/efi-x86_payload/payload.c

diff --git a/board/efi/efi-x86_payload/Kconfig b/board/efi/efi-x86_payload/Kconfig
index b6e57b9..08dd0c2 100644
--- a/board/efi/efi-x86_payload/Kconfig
+++ b/board/efi/efi-x86_payload/Kconfig
@@ -17,6 +17,7 @@ config SYS_TEXT_BASE
 
 config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
+	select BOARD_EARLY_INIT_R
 	imply SYS_NS16550
 	imply SCSI
 	imply SCSI_AHCI
diff --git a/board/efi/efi-x86_payload/Makefile b/board/efi/efi-x86_payload/Makefile
index 6982340..00ef695 100644
--- a/board/efi/efi-x86_payload/Makefile
+++ b/board/efi/efi-x86_payload/Makefile
@@ -2,4 +2,4 @@
 #
 # Copyright (C) 2018, Bin Meng <bmeng.cn at gmail.com>
 
-obj-y	+= start.o
+obj-y	+= start.o payload.o
diff --git a/board/efi/efi-x86_payload/payload.c b/board/efi/efi-x86_payload/payload.c
new file mode 100644
index 0000000..4eeb49a
--- /dev/null
+++ b/board/efi/efi-x86_payload/payload.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn at gmail.com>
+ */
+
+#include <common.h>
+#include <usb.h>
+
+int board_early_init_r(void)
+{
+	/*
+	 * Make sure PCI bus is enumerated so that peripherals on the PCI bus
+	 * can be discovered by their drivers
+	 */
+	pci_init();
+
+	return 0;
+}
-- 
2.7.4