From 2a43201a13bc690b5f15a1a998514d932db2f1b0 Mon Sep 17 00:00:00 2001 From: Dennis Gilmore Date: Wed, 30 Jul 2014 16:37:14 -0600 Subject: config: introduce a generic $bootcmd This generic $bootcmd, and associated support macros, automatically searches a defined set of storage devices (or network protocols) for an extlinux configuration file or U-Boot boot script in various standardized locations. Distros that install such a boot config file/script in those standard locations will get easy-to-set-up booting on HW that enables this generic $bootcmd. Boards can define the set of devices from which boot is attempted, and the order in which they are attempted. Users may later customize this set/order by edting $boot_targets. Users may interrupt the boot process and boot from a specific device simply by executing e.g.: $ run bootcmd_mmc1 or: $ run bootcmd_pxe This patch was originally written by Dennis Gilmore based on Tegra and rpi_b boot scripts. I have made the following modifications since then: * Boards must define the BOOT_TARGET_DEVICES macro in order to specify the set of devices (and order) from which to attempt boot. If needed, we can define a default directly in config_distro_bootcmd.h. * Removed $env_import and related variables; nothing used them, and I think it's better for boards to pre-load an environment customization file using CONFIG_PREBOOT if they need. * Renamed a bunch of variables to suit my whims:-) Signed-off-by: Dennis Gilmore Signed-off-by: Stephen Warren Reviewed-by: Marek Vasut Acked-by: Simon Glass diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h new file mode 100644 index 0000000..90d9901 --- /dev/null +++ b/include/config_distro_bootcmd.h @@ -0,0 +1,197 @@ +/* + * (C) Copyright 2014 + * NVIDIA Corporation + * + * Copyright 2014 Red Hat, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _CONFIG_CMD_DISTRO_BOOTCMD_H +#define _CONFIG_CMD_DISTRO_BOOTCMD_H + +#define BOOTENV_SHARED_BLKDEV_BODY(devtypel) \ + "if " #devtypel " dev ${devnum}; then " \ + "setenv devtype " #devtypel "; " \ + "run scan_dev_for_boot; " \ + "fi\0" + +#define BOOTENV_SHARED_BLKDEV(devtypel) \ + #devtypel "_boot=" \ + BOOTENV_SHARED_BLKDEV_BODY(devtypel) + +#define BOOTENV_DEV_BLKDEV(devtypeu, devtypel, instance) \ + "bootcmd_" #devtypel #instance "=" \ + "setenv devnum " #instance "; " \ + "run " #devtypel "_boot\0" + +#define BOOTENV_DEV_NAME_BLKDEV(devtypeu, devtypel, instance) \ + #devtypel #instance " " + +#ifdef CONFIG_CMD_MMC +#define BOOTENV_SHARED_MMC BOOTENV_SHARED_BLKDEV(mmc) +#define BOOTENV_DEV_MMC BOOTENV_DEV_BLKDEV +#define BOOTENV_DEV_NAME_MMC BOOTENV_DEV_NAME_BLKDEV +#else +#define BOOTENV_SHARED_MMC +#define BOOTENV_DEV_MMC \ + BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC +#define BOOTENV_DEV_NAME_MMC \ + BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC +#endif + +#ifdef CONFIG_CMD_SATA +#define BOOTENV_SHARED_SATA BOOTENV_SHARED_BLKDEV(sata) +#define BOOTENV_DEV_SATA BOOTENV_DEV_BLKDEV +#define BOOTENV_DEV_NAME_SATA BOOTENV_DEV_NAME_BLKDEV +#else +#define BOOTENV_SHARED_SATA +#define BOOTENV_DEV_SATA \ + BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA +#define BOOTENV_DEV_NAME_SATA \ + BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA +#endif + +#ifdef CONFIG_CMD_SCSI +#define BOOTENV_SHARED_SCSI BOOTENV_SHARED_BLKDEV(scsi) +#define BOOTENV_DEV_SCSI BOOTENV_DEV_BLKDEV +#define BOOTENV_DEV_NAME_SCSI BOOTENV_DEV_NAME_BLKDEV +#else +#define BOOTENV_SHARED_SCSI +#define BOOTENV_DEV_SCSI \ + BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI +#define BOOTENV_DEV_NAME_SCSI \ + BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI +#endif + +#ifdef CONFIG_CMD_IDE +#define BOOTENV_SHARED_IDE BOOTENV_SHARED_BLKDEV(ide) +#define BOOTENV_DEV_IDE BOOTENV_DEV_BLKDEV +#define BOOTENV_DEV_NAME_IDE BOOTENV_DEV_NAME_BLKDEV +#else +#define BOOTENV_SHARED_IDE +#define BOOTENV_DEV_IDE \ + BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE +#define BOOTENV_DEV_NAME_IDE \ + BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE +#endif + +#ifdef CONFIG_CMD_USB +#define BOOTENV_RUN_USB_INIT "run usb_init; " +#define BOOTENV_SET_USB_NEED_INIT "setenv usb_need_init; " +#define BOOTENV_SHARED_USB \ + "usb_init=" \ + "if ${usb_need_init}; then " \ + "setenv usb_need_init false; " \ + "usb start 0; " \ + "fi\0" \ + \ + "usb_boot=" \ + BOOTENV_RUN_USB_INIT \ + BOOTENV_SHARED_BLKDEV_BODY(usb) +#define BOOTENV_DEV_USB BOOTENV_DEV_BLKDEV +#define BOOTENV_DEV_NAME_USB BOOTENV_DEV_NAME_BLKDEV +#else +#define BOOTENV_RUN_USB_INIT +#define BOOTENV_SET_USB_NEED_INIT +#define BOOTENV_SHARED_USB +#define BOOTENV_DEV_USB \ + BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB +#define BOOTENV_DEV_NAME_USB \ + BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB +#endif + +#if defined(CONFIG_CMD_DHCP) +#define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \ + "bootcmd_dhcp=" \ + BOOTENV_RUN_USB_INIT \ + "if dhcp ${scriptaddr} boot.scr.uimg; then " \ + "source ${scriptaddr}; " \ + "fi\0" +#define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \ + "dhcp " +#else +#define BOOTENV_DEV_DHCP \ + BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP +#define BOOTENV_DEV_NAME_DHCP \ + BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP +#endif + +#if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE) +#define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \ + "bootcmd_pxe=" \ + BOOTENV_RUN_USB_INIT \ + "dhcp; " \ + "if pxe get; then " \ + "pxe boot; " \ + "fi\0" +#define BOOTENV_DEV_NAME_PXE(devtypeu, devtypel, instance) \ + "pxe " +#else +#define BOOTENV_DEV_PXE \ + BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE +#define BOOTENV_DEV_NAME_PXE \ + BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE +#endif + +#define BOOTENV_DEV_NAME(devtypeu, devtypel, instance) \ + BOOTENV_DEV_NAME_##devtypeu(devtypeu, devtypel, instance) +#define BOOTENV_BOOT_TARGETS \ + "boot_targets=" BOOT_TARGET_DEVICES(BOOTENV_DEV_NAME) "\0" + +#define BOOTENV_DEV(devtypeu, devtypel, instance) \ + BOOTENV_DEV_##devtypeu(devtypeu, devtypel, instance) +#define BOOTENV \ + BOOTENV_SHARED_MMC \ + BOOTENV_SHARED_USB \ + BOOTENV_SHARED_SATA \ + BOOTENV_SHARED_SCSI \ + BOOTENV_SHARED_IDE \ + "boot_prefixes=/ /boot/\0" \ + "boot_scripts=boot.scr.uimg boot.scr\0" \ + BOOTENV_BOOT_TARGETS \ + "bootpart=1\0" \ + \ + "boot_extlinux=" \ + "sysboot ${devtype} ${devnum}:${bootpart} any " \ + "${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \ + \ + "scan_dev_for_extlinux=" \ + "if test -e ${devtype} ${devnum}:${bootpart} " \ + "${prefix}extlinux/extlinux.conf; then " \ + "echo Found ${prefix}extlinux/extlinux.conf; " \ + "run boot_extlinux; " \ + "echo SCRIPT FAILED: continuing...; " \ + "fi\0" \ + \ + "boot_a_script=" \ + "load ${devtype} ${devnum}:${bootpart} " \ + "${scriptaddr} ${prefix}${script}; " \ + "source ${scriptaddr}\0" \ + \ + "scan_dev_for_scripts=" \ + "for script in ${boot_scripts}; do " \ + "if test -e ${devtype} ${devnum}:${bootpart} " \ + "${prefix}${script}; then " \ + "echo Found U-Boot script " \ + "${prefix}${script}; " \ + "run boot_a_script; " \ + "echo SCRIPT FAILED: continuing...; " \ + "fi; " \ + "done\0" \ + \ + "scan_dev_for_boot=" \ + "echo Scanning ${devtype} ${devnum}...; " \ + "for prefix in ${boot_prefixes}; do " \ + "run scan_dev_for_extlinux; " \ + "run scan_dev_for_scripts; " \ + "done\0" \ + \ + BOOT_TARGET_DEVICES(BOOTENV_DEV) \ + \ + "bootcmd=" BOOTENV_SET_USB_NEED_INIT \ + "for target in ${boot_targets}; do " \ + "run bootcmd_${target}; " \ + "done\0" + +#endif /* _CONFIG_CMD_DISTRO_BOOTCMD_H */ -- cgit v0.10.2