From: Doug Anderson dianders@chromium.org
This header includes useful scripts which can be used with any board that can boot Chrome OS.
In particular, 'run nvboot' will boot a board without verified boot enabled.
Signed-off-by: Doug Anderson dianders@chromium.org Signed-off-by: Simon Glass sjg@chromium.org ---
include/configs/chromeos.h | 464 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 464 insertions(+) create mode 100644 include/configs/chromeos.h
diff --git a/include/configs/chromeos.h b/include/configs/chromeos.h new file mode 100644 index 0000000..554ffba --- /dev/null +++ b/include/configs/chromeos.h @@ -0,0 +1,464 @@ +/* + * Copyright (c) 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __configs_chromeos_h__ +#define __configs_chromeos_h__ + +/* + * In anticipation of implementing early firmware selection, these defines + * signal the features that are required in U-Boot. + * + * The defines munging is thus kept to one Chrome OS-specific file. The + * upstream boards will define all features as normal for their platform. + * + * It is possible that these will be too broad for some platforms - e.g. we + * may have a platform which wants to use MMC in CONFIG_CROS_RO. However, + * we can deal with additional needs as we come to them. + * + * While it is something of an inconvenience, it may improve boot time on + * some platforms also. + * + * CONFIG_CROS_LARGE + * - Full version as now with factory defined, all features enabled + * - This will operate as factory build, or verified boot + * + * CONFIG_CROS_SMALL + * - Minimized for use only with verified boot + * - No command line, filesystems, LCD console, etc. + * - Still has all drivers enabled and can perform verified boot + * + * CONFIG_CROS_RO + * - Requires CONFIG_CROS_SMALL. Will only support running RO firmware + * - Set up for running VbLoadFirmware() only + * - Minimal RAM, no display, no USB, no mass storage (SPI flash only) + * - Intended for running in SPL + * + * CONFIG_CROS_RW + * - Requires CONFIG_CROS_SMALL. Will only support running RW firmware + * - Set up for running VbSelectAndLoadKernel() only + */ + +/* + * This config file defines platform-independent settings that a verified boot + * firmware must have. + */ + +/* Stringify a token */ +#ifndef STRINGIFY +#define _STRINGIFY(x) #x +#define STRINGIFY(x) _STRINGIFY(x) +#endif + +#define CONFIG_CROS_FULL + +/* Enable verified boot */ +#define CONFIG_CHROMEOS + +/* Enable test codes */ +#ifdef CONFIG_CROS_FULL +#define CONFIG_CHROMEOS_TEST +#endif /* VBOOT_DEBUG */ + +/* Support constant vboot flag from fdt */ +#define CONFIG_CHROMEOS_CONST_FLAG + +/* Enable vboot twostop with SPI flash */ +#define CONFIG_CHROMEOS_SPI + +#define CONFIG_VBOOT_REGION_READ + +#ifndef CONFIG_CROS_RO +#define CONFIG_CHROMEOS_DISPLAY + +/* Enable legacy vboot_twostop - crosbug.com/p/21810 */ +#define CONFIG_CROS_LEGACY_VBOOT +#endif + +#ifndef CONFIG_CROS_FULL +#undef CONFIG_CMDLINE +#undef CONFIG_SYS_LONGHELP +#undef CONFIG_SYS_CONSOLE_IS_IN_ENV +#undef CONFIG_SYS_STDIO_DEREGISTER +#undef CONFIG_SYS_HUSH_PARSER +#undef CONFIG_CBMEM_CONSOLE +#undef CONFIG_CMDLINE_EDITING +#undef CONFIG_COMMAND_HISTORY +#undef CONFIG_AUTOCOMPLETE +#undef CONFIG_CONSOLE_MUX +#undef CONFIG_SHOW_BOOT_PROGRESS + +#undef CONFIG_I8042_KBD +#define CONFIG_VGA_AS_SINGLE_DEVICE +#undef CONFIG_VIDEO_SW_CURSOR + +#undef CONFIG_SUPPORT_VFAT +#undef CONFIG_ATAPI +#undef CONFIG_EFI_PARTITION +#undef CONFIG_DOS_PARTITION +#undef CONFIG_MAC_PARTITION +#undef CONFIG_ISO_PARTITION +#undef CONFIG_PARTITION_UUIDS + +#undef CONFIG_CMD_PART +#undef CONFIG_CMD_CBFS +#undef CONFIG_CMD_EXT4 +#undef CONFIG_CMD_EXT4_WRITE +#undef CONFIG_CMD_NET +#undef CONFIG_CMD_CRC32 +#undef CONFIG_CMD_CROS_EC + +#undef CONFIG_USB_HOST_ETHER +#undef CONFIG_USB_ETHER_ASIX +#undef CONFIG_USB_ETHER_SMSC95XX + +#undef CONFIG_GENERIC_MMC +#undef CONFIG_MMC + +#define DYNAMIC_CRC_TABLE +#undef CONFIG_BOOTDELAY + +#endif + +/* Enable graphics display */ +#ifdef CONFIG_CHROMEOS_DISPLAY +#define CONFIG_LCD_BMP_RLE8 +#define CONFIG_LZMA +#define CONFIG_VIDEO_NO_TEXT +#else +#undef CONFIG_LCD +#undef CONFIG_EXYNOS_FB +#undef CONFIG_EXYNOS_DP +#undef CONFIG_VIDEO_ANALOGIX +#undef CONFIG_VIDEO_PARADE +#undef CONFIG_CMD_BMP +#endif + +#ifdef CONFIG_CROS_RO +#undef CONFIG_USB_EHCI +#undef CONFIG_USB_EHCI_PCI +#undef CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS +#undef CONFIG_USB_MAX_CONTROLLER_COUNT +#undef CONFIG_USB_STORAGE +#undef CONFIG_USB_KEYBOARD +#undef CONFIG_SYS_USB_EVENT_POLL + +#undef CONFIG_CMD_USB +#undef CONFIG_CMD_SOUND +#undef CONFIG_SOUND_INTEL_HDA +#undef CONFIG_CRC32_VERIFY +#undef CONFIG_TPM +#undef CONFIG_FIT +#define CONFIG_CRC32 +#undef CONFIG_LZO + +/* Limited memory so use a smaller recorded console */ +#undef CONFIG_RECORDED_CONSOLE_SIZE +#define CONFIG_RECORDED_CONSOLE_SIZE 3000 + +#else +/* USB is used in recovery mode */ +#define CONFIG_CHROMEOS_USB +#endif + +/* + * Enable this feature to embed crossystem data into device tree before booting + * the kernel. We add quite a few things to the FDT, including a 16KB binary + * blob. + * #define CONFIG_OF_BOARD_SETUP + */ +#define CONFIG_SYS_FDT_PAD 0x8000 + +/* Make sure that the safe version of printf() is compiled in. */ +#define CONFIG_SYS_VSNPRINTF + +/* + * This is the default kernel command line to a Chrome OS kernel. An ending + * space character helps us concatenate more arguments. + */ +#ifndef CONFIG_BOOTARGS +#define CONFIG_BOOTARGS +#endif +#define CHROMEOS_BOOTARGS "cros_secure " CONFIG_BOOTARGS " " + +#ifndef CONFIG_DIRECT_BOOTARGS +#define CONFIG_DIRECT_BOOTARGS +#endif +#ifndef CONFIG_EXTRA_BOOTARGS +#define CONFIG_EXTRA_BOOTARGS +#endif + +/******************************************************************************* + * Non-verified boot script * + ******************************************************************************/ + +/* + * Defines the regen_all variable, which is used by other commands + * defined in this file. Usage is to override one or more of the environment + * variables and then run regen_all to regenerate the environment. + * + * Args from other scipts in this file: + * bootdev_bootargs: Filled in by other commands below based on the boot + * device. + * + * Args: + * common_bootargs: A copy of the default bootargs so we can run regen_all + * more than once. + * dev_extras: Placeholder space for developers to put their own boot args. + * extra_bootargs: Filled in by update_firmware_vars.py script in some cases. + */ +#define CONFIG_REGEN_ALL_SETTINGS \ + "common_bootargs=cros_legacy " CONFIG_DIRECT_BOOTARGS "\0" \ + \ + "dev_extras=\0" \ + "extra_bootargs=" \ + CONFIG_EXTRA_BOOTARGS "\0" \ + "bootdev_bootargs=\0" \ + \ + "regen_all=" \ + "setenv bootargs " \ + "${common_bootargs} " \ + "${dev_extras} " \ + "${extra_bootargs} " \ + "${bootdev_bootargs}\0" + +/* + * Defines ext2_boot and run_disk_boot_script. + * + * The run_disk_boot_script runs a u-boot script on the boot disk. At the + * moment this is used to allow the boot disk to choose a partion to boot from, + * but could theoretically be used for more complicated things. + * + * The ext2_boot script boots from an ext2 device. + * + * Args from other scipts in this file: + * devtype: The device type we're booting from, like "usb" or "mmc" + * devnum: The device number (depends on devtype). If we're booting from + * extranal MMC (for instance), this would be 1 + * devname: The linux device name that will be assigned, like "sda" or + * mmcblk0p + * + * Args expected to be set by the u-boot script in /u-boot/boot.scr.uimg: + * rootpart: The root filesystem partion; we default to 3 in case there are + * problems reading the boot script. + * cros_bootfile: The name of the kernel in the root partition; we default to + * "/boot/vmlinux.uimg" + * + * Other args: + * script_part: The FAT partion we'll look for a boot script in. + * script_img: The name of the u-boot script. + * + * When we boot from an ext2 device, we will look at partion 12 (0x0c) to find + * a u-boot script (as /u-boot/boot.scr.uimg). That script is expected to + * override "rootpart" and "cros_bootfile" as needed to select which partition + * to boot from. + * + * USB download support: + * + * Once we have loaded the kernel from the selected device successfully, + * we check whether a kernel has in fact been provided through the USB + * download feature. In that case the kernaddr environment variable will + * be set. It might seem strange that we load the original kernel and + * then ignore it, but we try to load the kernel from a number of different + * places. If the USB disk fails (because there is no disk inserted or + * it is invalid) we don't want to pull in the kernaddr kernel and boot it + * with USB as the root disk. So allow the normal boot failover to occur, + * and only insert the kernaddr kernel when we actually have decided + * what to boot from. + */ +#define CONFIG_EXT2_BOOT_HELPER_SETTINGS \ + "rootpart=3\0" \ + "cros_bootfile=/boot/vmlinux.uimg\0" \ + \ + "script_part=c\0" \ + "script_img=/u-boot/boot.scr.uimg\0" \ + \ + "run_disk_boot_script=" \ + "if fatload ${devtype} ${devnum}:${script_part} " \ + "${loadaddr} ${script_img}; then " \ + "source ${loadaddr}; " \ + "echo done; " \ + "fi\0" \ + \ + "regen_ext2_bootargs=" \ + "setenv bootdev_bootargs root=${devname} rootwait ro; " \ + "run regen_all\0" \ + \ + "ext2_boot=" \ + "run regen_ext2_bootargs; " \ + "if ext2load ${devtype} ${devnum}:${rootpart} " \ + "${loadaddr} ${cros_bootfile}; then " \ + "if test "${kernaddr}" != ""; then "\ + "echo "Using bundled kernel"; "\ + "bootm ${kernaddr};" \ + "fi; "\ + "bootm ${loadaddr};" \ + "fi\0" + +/* + * Network-boot related settings. + * + * At the moment, we support: + * - initramfs factory install (tftp kernel with factory installer initramfs) + * - full network root booting (tftp kernel and initial ramdisk) + * - nfs booting (tftp kernel and point root to NFS) + * + * Network booting is enabled if you have an ethernet adapter plugged in at boot + * and also have set tftpserverip/nfsserverip to something other than 0.0.0.0. + * For full network booting or initramfs factory install you just need + * tftpserverip. To choose full network booting over initramfs factory intsall, + * you have to set has_initrd=1. For full NFS root you neet to set both + * tftpserverip and nfsserverip. + */ +#define CONFIG_NETBOOT_SETTINGS \ + "tftpserverip=0.0.0.0\0" \ + "nfsserverip=0.0.0.0\0" \ + "has_initrd=0\0" \ + \ + "rootaddr=" STRINGIFY(CONFIG_INITRD_ADDRESS) "\0" \ + "initrd_high=0xffffffff\0" \ + \ + "regen_nfsroot_bootargs=" \ + "setenv bootdev_bootargs " \ + "dev=/dev/nfs4 rw nfsroot=${nfsserverip}:${rootpath} " \ + "ip=dhcp noinitrd; " \ + "run regen_all\0" \ + "regen_initrdroot_bootargs=" \ + "setenv bootdev_bootargs " \ + "rw root=/dev/ram0 ramdisk_size=512000 cros_netboot; " \ + "run regen_all\0" \ + "regen_initramfs_install_bootargs=" \ + "setenv bootdev_bootargs " \ + "lsm.module_locking=0 cros_netboot_ramfs " \ + "cros_factory_install cros_secure; " \ + "run regen_all\0" \ + \ + "tftp_setup=" \ + "setenv tftpkernelpath " \ + "/tftpboot/vmlinux.uimg; " \ + "setenv tftprootpath " \ + "/tftpboot/initrd.uimg; " \ + "setenv rootpath " \ + "/export/nfsroot; " \ + "setenv autoload n\0" \ + "initrdroot_boot=" \ + "run tftp_setup; " \ + "run regen_initrdroot_bootargs; " \ + "bootp; " \ + "if tftpboot ${rootaddr} ${tftpserverip}:${tftprootpath} && " \ + " tftpboot ${loadaddr} ${tftpserverip}:${tftpkernelpath}; " \ + "then " \ + "bootm ${loadaddr} ${rootaddr}; " \ + "else " \ + "echo 'ERROR: Could not load root/kernel from TFTP'; " \ + "exit; " \ + "fi\0" \ + "initramfs_boot=" \ + "run tftp_setup; "\ + "run regen_initramfs_install_bootargs; "\ + "bootp; " \ + "if tftpboot ${loadaddr} ${tftpserverip}:${tftpkernelpath}; " \ + "then " \ + "bootm ${loadaddr}; "\ + "else " \ + "echo 'ERROR: Could not load kernel from TFTP'; " \ + "exit; " \ + "fi\0" \ + "tftp_ext2_boot=" \ + "run tftp_setup; " \ + "run regen_ext2_bootargs; " \ + "bootp; " \ + "if tftpboot ${loadaddr} ${tftpserverip}:${tftpkernelpath}; " \ + "then " \ + "bootm ${loadaddr}; " \ + "else " \ + "echo 'ERROR: Could not load kernel from TFTP'; " \ + "exit; " \ + "fi\0" \ + "nfsroot_boot=" \ + "run tftp_setup; " \ + "run regen_nfsroot_bootargs; " \ + "bootp; " \ + "if tftpboot ${loadaddr} ${tftpserverip}:${tftpkernelpath}; " \ + "then " \ + "bootm ${loadaddr}; " \ + "else " \ + "echo 'ERROR: Could not load kernel from TFTP'; " \ + "exit; " \ + "fi\0" \ + \ + "net_boot=" \ + "if test ${ethact} != ""; then " \ + "if test ${tftpserverip} != "0.0.0.0"; then " \ + "if test ${nfsserverip} != "0.0.0.0"; then " \ + "run nfsroot_boot; " \ + "fi; " \ + "if test ${has_initrd} != "0"; then " \ + "run initrdroot_boot; " \ + "else " \ + "run initramfs_boot; " \ + "fi; " \ + "fi; " \ + "fi\0" \ + +/* + * Our full set of extra enviornment variables. + * + * A few notes: + * - Right now, we can only boot from one USB device. Need to fix this once + * usb works better. + * - We define "non_verified_boot", which is the normal boot command unless + * it is overridden in the FDT. + * - When we're running securely, the FDT will specify to call vboot_twostop + * directly. + */ + +#ifdef CONFIG_CROS_RO +#define CONFIG_CHROMEOS_EXTRA_ENV_SETTINGS +#else +#define CONFIG_CHROMEOS_EXTRA_ENV_SETTINGS \ + CONFIG_REGEN_ALL_SETTINGS \ + CONFIG_EXT2_BOOT_HELPER_SETTINGS \ + CONFIG_NETBOOT_SETTINGS \ + \ + "set_devname=" \ + "part uuid ${devtype} ${devnum}:${rootpart} rootuuid; " \ + "setenv devname PARTUUID=${rootuuid}\0" \ + \ + "usb_boot=setenv devtype usb; " \ + "setenv devnum 0; " \ + "run run_disk_boot_script;" \ + "run set_devname; " \ + "run ext2_boot\0" \ + \ + "mmc_setup=" \ + "mmc dev ${devnum}; " \ + "mmc rescan; " \ + "setenv devtype mmc\0" \ + "mmc_boot=" \ + "run mmc_setup; " \ + "run run_disk_boot_script;" \ + "run set_devname; " \ + "run ext2_boot\0" \ + "mmc0_boot=setenv devnum 0; " \ + "run mmc_boot\0" \ + "mmc1_boot=setenv devnum 1; " \ + "run mmc_boot\0" \ + "mmc0_tftpboot=setenv devnum 0; " \ + "run mmc_setup; " \ + "run tftp_ext2_boot\0" \ + \ + "nvboot=" \ + "usb start; " \ + "run net_boot; " \ + "run usb_boot; " \ + \ + "run mmc1_boot; " \ + "run mmc0_boot\0" +#endif + +#define CONFIG_NON_VERIFIED_BOOTCOMMAND "run nvboot" + +#endif /* __configs_chromeos_h__ */