From ceeee8f7b5f10d7736840b169249e891da0f6a47 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Fri, 10 Aug 2018 02:39:33 -0700 Subject: [PATCH] x86: coreboot: Add generic coreboot payload support Currently building U-Boot as the coreboot payload requires user to change the build configuration for a specific board during menuconfig process. This uses the board's native device tree to configure the hardware. For example, the device tree provides PCI address range for the PCI host controller and U-Boot will re-program all PCI devices' BAR to be within this range. In order to make sure we don't mess up the hardware, we should guarantee the range matches what coreboot programs the chipset. But we really should make the coreboot payload support easier. Just like EFI payload, we can create a generic coreboot payload for all x86 boards as well. 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 coreboot's responsibility. Platform specific drivers (like gpio, spi, etc) are not included. Signed-off-by: Bin Meng Reviewed-by: Christian Gmeiner --- arch/x86/cpu/coreboot/Kconfig | 20 ++++----- arch/x86/cpu/coreboot/coreboot.c | 9 ++-- arch/x86/dts/Makefile | 1 + arch/x86/dts/coreboot.dts | 41 +++++++++++++++++++ board/coreboot/coreboot/Kconfig | 28 ++----------- board/coreboot/coreboot/Makefile | 2 +- board/coreboot/coreboot/coreboot.c | 17 ++++++++ .../coreboot/{coreboot_start.S => start.S} | 0 configs/coreboot_defconfig | 18 +++----- doc/README.x86 | 15 ------- include/configs/coreboot.h | 32 +++++++++++++++ 11 files changed, 116 insertions(+), 67 deletions(-) create mode 100644 arch/x86/dts/coreboot.dts create mode 100644 board/coreboot/coreboot/coreboot.c rename board/coreboot/coreboot/{coreboot_start.S => start.S} (100%) create mode 100644 include/configs/coreboot.h diff --git a/arch/x86/cpu/coreboot/Kconfig b/arch/x86/cpu/coreboot/Kconfig index 392c258945..93f61f2fa4 100644 --- a/arch/x86/cpu/coreboot/Kconfig +++ b/arch/x86/cpu/coreboot/Kconfig @@ -3,26 +3,26 @@ if TARGET_COREBOOT config SYS_COREBOOT bool default y + imply SYS_NS16550 + imply SCSI + imply SCSI_AHCI imply AHCI_PCI - imply E1000 - imply ICH_SPI imply MMC imply MMC_PCI imply MMC_SDHCI imply MMC_SDHCI_SDMA - imply SCSI - imply SCSI_AHCI - imply SPI_FLASH - imply SYS_NS16550 imply USB imply USB_EHCI_HCD imply USB_XHCI_HCD + imply USB_STORAGE + imply USB_KEYBOARD imply VIDEO_COREBOOT + imply E1000 + imply ETH_DESIGNWARE + imply PCH_GBE + imply RTL8169 imply CMD_CBFS imply FS_CBFS - -config CBMEM_CONSOLE - bool - default y + imply CBMEM_CONSOLE endif diff --git a/arch/x86/cpu/coreboot/coreboot.c b/arch/x86/cpu/coreboot/coreboot.c index 69025c1537..a6fd3a849a 100644 --- a/arch/x86/cpu/coreboot/coreboot.c +++ b/arch/x86/cpu/coreboot/coreboot.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -75,12 +76,10 @@ int last_stage_init(void) if (gd->flags & GD_FLG_COLD_BOOT) timestamp_add_to_bootstage(); - board_final_cleanup(); + /* start usb so that usb keyboard can be used as input device */ + usb_init(); - return 0; -} + board_final_cleanup(); -int misc_init_r(void) -{ return 0; } diff --git a/arch/x86/dts/Makefile b/arch/x86/dts/Makefile index 37e4fdc760..c62540fe74 100644 --- a/arch/x86/dts/Makefile +++ b/arch/x86/dts/Makefile @@ -6,6 +6,7 @@ dtb-y += bayleybay.dtb \ chromebox_panther.dtb \ chromebook_samus.dtb \ conga-qeval20-qa3-e3845.dtb \ + coreboot.dtb \ cougarcanyon2.dtb \ crownbay.dtb \ dfi-bt700-q7x-151.dtb \ diff --git a/arch/x86/dts/coreboot.dts b/arch/x86/dts/coreboot.dts new file mode 100644 index 0000000000..a94f781833 --- /dev/null +++ b/arch/x86/dts/coreboot.dts @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, Bin Meng + * + * Generic coreboot payload device tree for x86 targets + */ + +/dts-v1/; + +/include/ "skeleton.dtsi" +/include/ "serial.dtsi" +/include/ "keyboard.dtsi" +/include/ "reset.dtsi" +/include/ "rtc.dtsi" +/include/ "tsc_timer.dtsi" + +/ { + model = "coreboot x86 payload"; + compatible = "coreboot,x86-payload"; + + aliases { + serial0 = &serial; + }; + + config { + silent_console = <0>; + }; + + chosen { + stdout-path = "/serial"; + }; + + pci { + compatible = "pci-x86"; + u-boot,dm-pre-reloc; + }; + + coreboot-fb { + compatible = "coreboot-fb"; + }; +}; diff --git a/board/coreboot/coreboot/Kconfig b/board/coreboot/coreboot/Kconfig index cfa1d50ee4..5bd6465d98 100644 --- a/board/coreboot/coreboot/Kconfig +++ b/board/coreboot/coreboot/Kconfig @@ -9,35 +9,15 @@ config SYS_VENDOR config SYS_SOC default "coreboot" +config SYS_CONFIG_NAME + default "coreboot" + config SYS_TEXT_BASE default 0x01110000 config BOARD_SPECIFIC_OPTIONS # dummy def_bool y - imply SPI_FLASH_ATMEL - imply SPI_FLASH_EON - imply SPI_FLASH_GIGADEVICE - imply SPI_FLASH_MACRONIX - imply SPI_FLASH_SPANSION - imply SPI_FLASH_STMICRO - imply SPI_FLASH_SST - imply SPI_FLASH_WINBOND - -comment "coreboot-specific options" - -config SYS_CONFIG_NAME - string "Board configuration file" - default "qemu-x86" - help - This option selects the board configuration file in include/configs/ - directory to be used to build U-Boot for coreboot. - -config DEFAULT_DEVICE_TREE - string "Board Device Tree Source (dts) file" - default "qemu-x86_i440fx" - help - This option selects the board Device Tree Source (dts) file in - arch/x86/dts/ directory to be used to build U-Boot for coreboot. + select BOARD_EARLY_INIT_R config SYS_CAR_ADDR hex "Board specific Cache-As-RAM (CAR) address" diff --git a/board/coreboot/coreboot/Makefile b/board/coreboot/coreboot/Makefile index ea0f3ee1ae..8db7cc62f3 100644 --- a/board/coreboot/coreboot/Makefile +++ b/board/coreboot/coreboot/Makefile @@ -10,4 +10,4 @@ # (C) Copyright 2002 # Daniel Engström, Omicron Ceti AB, daniel@omicron.se. -obj-y += coreboot_start.o +obj-y += start.o coreboot.o diff --git a/board/coreboot/coreboot/coreboot.c b/board/coreboot/coreboot/coreboot.c new file mode 100644 index 0000000000..ed5606d4a4 --- /dev/null +++ b/board/coreboot/coreboot/coreboot.c @@ -0,0 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, Bin Meng + */ + +#include + +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; +} diff --git a/board/coreboot/coreboot/coreboot_start.S b/board/coreboot/coreboot/start.S similarity index 100% rename from board/coreboot/coreboot/coreboot_start.S rename to board/coreboot/coreboot/start.S diff --git a/configs/coreboot_defconfig b/configs/coreboot_defconfig index 114ac6115e..ad0b35f204 100644 --- a/configs/coreboot_defconfig +++ b/configs/coreboot_defconfig @@ -4,28 +4,25 @@ CONFIG_VENDOR_COREBOOT=y CONFIG_TARGET_COREBOOT=y CONFIG_NR_DRAM_BANKS=8 CONFIG_FIT=y -CONFIG_BOOTSTAGE=y -CONFIG_BOOTSTAGE_REPORT=y +CONFIG_FIT_SIGNATURE=y CONFIG_USE_BOOTARGS=y CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro" +CONFIG_PRE_CONSOLE_BUFFER=y +CONFIG_PRE_CON_BUF_ADDR=0x100000 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_SF=y -CONFIG_CMD_SPI=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_BOOTSTAGE=y -CONFIG_CMD_TPM=y -CONFIG_CMD_TPM_TEST=y CONFIG_CMD_EXT2=y CONFIG_CMD_EXT4=y CONFIG_CMD_EXT4_WRITE=y @@ -34,11 +31,8 @@ CONFIG_CMD_FS_GENERIC=y CONFIG_MAC_PARTITION=y CONFIG_ISO_PARTITION=y CONFIG_EFI_PARTITION=y +CONFIG_DEFAULT_DEVICE_TREE="coreboot" CONFIG_REGMAP=y CONFIG_SYSCON=y -CONFIG_SPI=y -CONFIG_TPM_TIS_LPC=y -CONFIG_USB_STORAGE=y -CONFIG_USB_KEYBOARD=y +# CONFIG_PCI_PNP is not set CONFIG_CONSOLE_SCROLL_LINES=5 -CONFIG_TPM=y diff --git a/doc/README.x86 b/doc/README.x86 index 9162ea17d8..6015ca4011 100644 --- a/doc/README.x86 +++ b/doc/README.x86 @@ -47,21 +47,6 @@ on other architectures, like below: $ make coreboot_defconfig $ make all -Note this default configuration will build a U-Boot payload for the QEMU board. -To build a coreboot payload against another board, you can change the build -configuration during the 'make menuconfig' process. - -x86 architecture ---> - ... - (qemu-x86) Board configuration file - (qemu-x86_i440fx) Board Device Tree Source (dts) file - (0x01920000) Board specific Cache-As-RAM (CAR) address - (0x4000) Board specific Cache-As-RAM (CAR) size - -Change the 'Board configuration file' and 'Board Device Tree Source (dts) file' -to point to a new board. You can also change the Cache-As-RAM (CAR) related -settings here if the default values do not fit your new board. - Build Instructions for U-Boot as main bootloader ------------------------------------------------ diff --git a/include/configs/coreboot.h b/include/configs/coreboot.h new file mode 100644 index 0000000000..1cf5c037e8 --- /dev/null +++ b/include/configs/coreboot.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2018, Bin Meng + */ + +/* + * board/config.h - configuration options, board specific + */ + +#ifndef __CONFIG_H +#define __CONFIG_H + +#include + +#define CONFIG_SYS_MONITOR_LEN (1 << 20) + +#define CONFIG_STD_DEVICES_SETTINGS "stdin=serial,i8042-kbd,usbkbd\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 */ -- 2.25.1