x86: Add generic EFI payload support

It is possible to create a generic EFI payload for all x86 boards.
The payload is configured to include as many generic drivers as
possible. All stuff that touches low-level initialization are not
allowed as such is the EFI BIOS's responsibility. Platform specific
drivers (like gpio, spi, etc) are not included.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/x86/dts/Makefile b/arch/x86/dts/Makefile
index 73797746f83b41a7981b9496e20023ca9f6d81a3..9872c0473914ea62b91e962cf1a3a28d52cbb856 100644 (file)
--- a/arch/x86/dts/Makefile
+++ b/arch/x86/dts/Makefile
@@ -11,6 +11,7 @@ dtb-y += bayleybay.dtb \
        dfi-bt700-q7x-151.dtb \
        edison.dtb \
        efi.dtb \
+       efi-x86_payload.dtb \
        galileo.dtb \
        minnowmax.dtb \
        qemu-x86_i440fx.dtb \

diff --git a/arch/x86/dts/efi-x86_payload.dts b/arch/x86/dts/efi-x86_payload.dts
new file mode 100644 (file)
index 0000000..137bde5
--- /dev/null
+++ b/arch/x86/dts/efi-x86_payload.dts
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * Generic EFI payload device tree for x86 targets
+ */
+
+/dts-v1/;
+
+/include/ "skeleton.dtsi"
+/include/ "serial.dtsi"
+/include/ "keyboard.dtsi"
+/include/ "rtc.dtsi"
+/include/ "tsc_timer.dtsi"
+
+/ {
+       model = "EFI x86 Payload";
+       compatible = "efi,x86-payload";
+
+       aliases {
+               serial0 = &serial;
+       };
+
+       config {
+               silent_console = <0>;
+       };
+
+       chosen {
+               stdout-path = "/serial";
+       };
+
+       pci {
+               compatible = "pci-x86";
+               u-boot,dm-pre-reloc;
+       };
+};

diff --git a/board/efi/Kconfig b/board/efi/Kconfig
index 6f86a48fa7f6c3c74cbff3252f4b3df5812c33a4..d37f6ff28864834d20c06bf1efbf33e1411039a3 100644 (file)
--- a/board/efi/Kconfig
+++ b/board/efi/Kconfig
@@ -12,8 +12,17 @@ config TARGET_EFI
          takes over once the RAM, video and CPU are fully running.
          U-Boot is loaded as an application from EFI.
 
+config TARGET_EFI_PAYLOAD
+       bool "efi payload"
+       help
+         This target is used for running U-Boot on top of EFI. In
+         this case EFI does the early initialisation, and U-Boot
+         takes over once the RAM, video and CPU are fully running.
+         U-Boot is loaded as a payload from EFI.
+
 endchoice
 
 source "board/efi/efi-x86/Kconfig"
+source "board/efi/efi-x86_payload/Kconfig"
 
 endif

diff --git a/board/efi/efi-x86_payload/Kconfig b/board/efi/efi-x86_payload/Kconfig
new file mode 100644 (file)
index 0000000..dcf4de8
--- /dev/null
+++ b/board/efi/efi-x86_payload/Kconfig
@@ -0,0 +1,38 @@
+if TARGET_EFI_PAYLOAD
+
+config SYS_BOARD
+       default "efi-x86_payload"
+
+config SYS_VENDOR
+       default "efi"
+
+config SYS_SOC
+       default "efi"
+
+config SYS_CONFIG_NAME
+       default "efi-x86_payload"
+
+config SYS_TEXT_BASE
+       default 0x00200000
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+       def_bool y
+       imply SYS_NS16550
+       imply SCSI
+       imply SCSI_AHCI
+       imply AHCI_PCI
+       imply MMC
+       imply MMC_PCI
+       imply MMC_SDHCI
+       imply MMC_SDHCI_SDMA
+       imply USB
+       imply USB_EHCI_HCD
+       imply USB_XHCI_HCD
+       imply USB_STORAGE
+       imply USB_KEYBOARD
+       imply E1000
+       imply ETH_DESIGNWARE
+       imply PCH_GBE
+       imply RTL8169
+
+endif

diff --git a/board/efi/efi-x86_payload/MAINTAINERS b/board/efi/efi-x86_payload/MAINTAINERS
new file mode 100644 (file)
index 0000000..abf3a15
--- /dev/null
+++ b/board/efi/efi-x86_payload/MAINTAINERS
@@ -0,0 +1,7 @@
+EFI-X86_PAYLOAD BOARD
+M:     Bin Meng <bmeng.cn@gmail.com>
+S:     Maintained
+F:     board/efi/efi-x86_payload/
+F:     include/configs/efi-x86_payload.h
+F:     configs/efi-x86_payload32_defconfig
+F:     configs/efi-x86_payload64_defconfig

diff --git a/board/efi/efi-x86_payload/Makefile b/board/efi/efi-x86_payload/Makefile
new file mode 100644 (file)
index 0000000..6982340
--- /dev/null
+++ b/board/efi/efi-x86_payload/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+
+obj-y  += start.o

diff --git a/board/efi/efi-x86_payload/start.S b/board/efi/efi-x86_payload/start.S
new file mode 100644 (file)
index 0000000..f7eaa7c
--- /dev/null
+++ b/board/efi/efi-x86_payload/start.S
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+.globl early_board_init
+early_board_init:
+       jmp     early_board_init_ret

diff --git a/configs/efi-x86_payload32_defconfig b/configs/efi-x86_payload32_defconfig
new file mode 100644 (file)
index 0000000..7f0cab0
--- /dev/null
+++ b/configs/efi-x86_payload32_defconfig
@@ -0,0 +1,35 @@
+CONFIG_X86=y
+CONFIG_VENDOR_EFI=y
+CONFIG_DEFAULT_DEVICE_TREE="efi-x86_payload"
+CONFIG_TARGET_EFI_PAYLOAD=y
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_LAST_STAGE_INIT=y
+CONFIG_HUSH_PARSER=y
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_IDE=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
+# CONFIG_CMD_NFS is not set
+CONFIG_CMD_PING=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_MAC_PARTITION=y
+CONFIG_ISO_PARTITION=y
+CONFIG_EFI_PARTITION=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+# CONFIG_PCI_PNP is not set
+CONFIG_EFI=y
+CONFIG_EFI_STUB=y

diff --git a/configs/efi-x86_payload64_defconfig b/configs/efi-x86_payload64_defconfig
new file mode 100644 (file)
index 0000000..8d7f3f0
--- /dev/null
+++ b/configs/efi-x86_payload64_defconfig
@@ -0,0 +1,36 @@
+CONFIG_X86=y
+CONFIG_VENDOR_EFI=y
+CONFIG_DEFAULT_DEVICE_TREE="efi-x86_payload"
+CONFIG_TARGET_EFI_PAYLOAD=y
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_LAST_STAGE_INIT=y
+CONFIG_HUSH_PARSER=y
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_IDE=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
+# CONFIG_CMD_NFS is not set
+CONFIG_CMD_PING=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_MAC_PARTITION=y
+CONFIG_ISO_PARTITION=y
+CONFIG_EFI_PARTITION=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+# CONFIG_PCI_PNP is not set
+CONFIG_EFI=y
+CONFIG_EFI_STUB=y
+CONFIG_EFI_STUB_64BIT=y

diff --git a/doc/README.u-boot_on_efi b/doc/README.u-boot_on_efi
index 0349c5663af04d54c322241cb014158e7ff22a91..8fba112e116626ea67c279330ef3d50cf7015421 100644 (file)
--- a/doc/README.u-boot_on_efi
+++ b/doc/README.u-boot_on_efi
@@ -71,12 +71,13 @@ Just build U-Boot as normal, e.g.
    make efi-x86_defconfig
    make
 
-To build U-Boot as an EFI payload (32-bit or 64-bit EFI can be used), adjust an
-existing config (like qemu-x86_defconfig) to enable CONFIG_EFI, CONFIG_EFI_STUB
-and either CONFIG_EFI_STUB_32BIT or CONFIG_EFI_STUB_64BIT. All of these are
-boolean Kconfig options. Then build U-Boot as normal, e.g.
+To build U-Boot as an EFI payload (32-bit or 64-bit EFI can be used), enable
+CONFIG_EFI, CONFIG_EFI_STUB, and select either CONFIG_EFI_STUB_32BIT or
+CONFIG_EFI_STUB_64BIT. The efi-x86_payload configs (efi-x86_payload32_defconfig
+and efi-x86_payload32_defconfig) are set up for this. Then build U-Boot as
+normal, e.g.
 
-   make qemu-x86_defconfig
+   make efi-x86_payload32_defconfig (or efi-x86_payload64_defconfig)
    make
 
 You will end up with one of these files depending on what you build for:
@@ -211,11 +212,6 @@ Future work
 -----------
 This work could be extended in a number of ways:
 
-- Add a generic x86 EFI payload configuration. At present you need to modify
-an existing one, but mostly the low-level x86 code is disabled when booting
-on EFI anyway, so a generic 'EFI' board could be created with a suitable set
-of drivers enabled.
-
 - Add ARM support
 
 - Add 64-bit application support
@@ -241,6 +237,9 @@ arch/x86/cpu/efi
 board/efi/efi-x86/efi.c
        x86 board code for running as an EFI application
 
+board/efi/efi-x86_payload
+       generic x86 EFI payload board support code
+
 common/cmd_efi.c
        the 'efi' command
 

diff --git a/include/configs/efi-x86_payload.h b/include/configs/efi-x86_payload.h
new file mode 100644 (file)
index 0000000..9c62fd2
--- /dev/null
+++ b/include/configs/efi-x86_payload.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+/*
+ * board/config.h - configuration options, board specific
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <configs/x86-common.h>
+
+#define CONFIG_SYS_MONITOR_LEN         (1 << 20)
+
+#define CONFIG_STD_DEVICES_SETTINGS    "stdin=serial,i8042-kbd\0" \
+                                       "stdout=serial,vidconsole\0" \
+                                       "stderr=serial,vidconsole\0"
+
+/* ATA/IDE support */
+#define CONFIG_SYS_IDE_MAXBUS          2
+#define CONFIG_SYS_IDE_MAXDEVICE       4
+#define CONFIG_SYS_ATA_BASE_ADDR       0
+#define CONFIG_SYS_ATA_DATA_OFFSET     0
+#define CONFIG_SYS_ATA_REG_OFFSET      0
+#define CONFIG_SYS_ATA_ALT_OFFSET      0
+#define CONFIG_SYS_ATA_IDE0_OFFSET     0x1f0
+#define CONFIG_SYS_ATA_IDE1_OFFSET     0x170
+#define CONFIG_ATAPI
+
+#endif /* __CONFIG_H */