1 /* 2 * (C) Copyright 2014 3 * NVIDIA Corporation <www.nvidia.com> 4 * 5 * Copyright 2014 Red Hat, Inc. 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #ifndef _CONFIG_CMD_DISTRO_BOOTCMD_H 11 #define _CONFIG_CMD_DISTRO_BOOTCMD_H 12 13 /* 14 * A note on error handling: It is possible for BOOT_TARGET_DEVICES to 15 * reference a device that is not enabled in the U-Boot configuration, e.g. 16 * it may include MMC in the list without CONFIG_CMD_MMC being enabled. Given 17 * that BOOT_TARGET_DEVICES is a macro that's expanded by the C pre-processor 18 * at compile time, it's not possible to detect and report such problems via 19 * a simple #ifdef/#error combination. Still, the code needs to report errors. 20 * The best way I've found to do this is to make BOOT_TARGET_DEVICES expand to 21 * reference a non-existent symbol, and have the name of that symbol encode 22 * the error message. Consequently, this file contains references to e.g. 23 * BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC. Given the 24 * prevalence of capitals here, this looks like a pre-processor macro and 25 * hence seems like it should be all capitals, but it's really an error 26 * message that includes some other pre-processor symbols in the text. 27 */ 28 29 /* We need the part command */ 30 #define CONFIG_PARTITION_UUIDS 31 #define CONFIG_CMD_PART 32 33 #define BOOTENV_SHARED_BLKDEV_BODY(devtypel) \ 34 "if " #devtypel " dev ${devnum}; then " \ 35 "setenv devtype " #devtypel "; " \ 36 "run scan_dev_for_boot_part; " \ 37 "fi\0" 38 39 #define BOOTENV_SHARED_BLKDEV(devtypel) \ 40 #devtypel "_boot=" \ 41 BOOTENV_SHARED_BLKDEV_BODY(devtypel) 42 43 #define BOOTENV_DEV_BLKDEV(devtypeu, devtypel, instance) \ 44 "bootcmd_" #devtypel #instance "=" \ 45 "setenv devnum " #instance "; " \ 46 "run " #devtypel "_boot\0" 47 48 #define BOOTENV_DEV_NAME_BLKDEV(devtypeu, devtypel, instance) \ 49 #devtypel #instance " " 50 51 #ifdef CONFIG_CMD_MMC 52 #define BOOTENV_SHARED_MMC BOOTENV_SHARED_BLKDEV(mmc) 53 #define BOOTENV_DEV_MMC BOOTENV_DEV_BLKDEV 54 #define BOOTENV_DEV_NAME_MMC BOOTENV_DEV_NAME_BLKDEV 55 #else 56 #define BOOTENV_SHARED_MMC 57 #define BOOTENV_DEV_MMC \ 58 BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC 59 #define BOOTENV_DEV_NAME_MMC \ 60 BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC 61 #endif 62 63 #ifdef CONFIG_CMD_SATA 64 #define BOOTENV_SHARED_SATA BOOTENV_SHARED_BLKDEV(sata) 65 #define BOOTENV_DEV_SATA BOOTENV_DEV_BLKDEV 66 #define BOOTENV_DEV_NAME_SATA BOOTENV_DEV_NAME_BLKDEV 67 #else 68 #define BOOTENV_SHARED_SATA 69 #define BOOTENV_DEV_SATA \ 70 BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA 71 #define BOOTENV_DEV_NAME_SATA \ 72 BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA 73 #endif 74 75 #ifdef CONFIG_CMD_SCSI 76 #define BOOTENV_RUN_SCSI_INIT "run scsi_init; " 77 #define BOOTENV_SET_SCSI_NEED_INIT "setenv scsi_need_init; " 78 #define BOOTENV_SHARED_SCSI \ 79 "scsi_init=" \ 80 "if ${scsi_need_init}; then " \ 81 "setenv scsi_need_init false; " \ 82 "scsi scan; " \ 83 "fi\0" \ 84 \ 85 "scsi_boot=" \ 86 BOOTENV_RUN_SCSI_INIT \ 87 BOOTENV_SHARED_BLKDEV_BODY(scsi) 88 #define BOOTENV_DEV_SCSI BOOTENV_DEV_BLKDEV 89 #define BOOTENV_DEV_NAME_SCSI BOOTENV_DEV_NAME_BLKDEV 90 #else 91 #define BOOTENV_RUN_SCSI_INIT 92 #define BOOTENV_SET_SCSI_NEED_INIT 93 #define BOOTENV_SHARED_SCSI 94 #define BOOTENV_DEV_SCSI \ 95 BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI 96 #define BOOTENV_DEV_NAME_SCSI \ 97 BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI 98 #endif 99 100 #ifdef CONFIG_CMD_IDE 101 #define BOOTENV_SHARED_IDE BOOTENV_SHARED_BLKDEV(ide) 102 #define BOOTENV_DEV_IDE BOOTENV_DEV_BLKDEV 103 #define BOOTENV_DEV_NAME_IDE BOOTENV_DEV_NAME_BLKDEV 104 #else 105 #define BOOTENV_SHARED_IDE 106 #define BOOTENV_DEV_IDE \ 107 BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE 108 #define BOOTENV_DEV_NAME_IDE \ 109 BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE 110 #endif 111 112 #ifdef CONFIG_CMD_USB 113 #define BOOTENV_RUN_USB_INIT "usb start; " 114 #define BOOTENV_SHARED_USB \ 115 "usb_boot=" \ 116 BOOTENV_RUN_USB_INIT \ 117 BOOTENV_SHARED_BLKDEV_BODY(usb) 118 #define BOOTENV_DEV_USB BOOTENV_DEV_BLKDEV 119 #define BOOTENV_DEV_NAME_USB BOOTENV_DEV_NAME_BLKDEV 120 #else 121 #define BOOTENV_RUN_USB_INIT 122 #define BOOTENV_SHARED_USB 123 #define BOOTENV_DEV_USB \ 124 BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB 125 #define BOOTENV_DEV_NAME_USB \ 126 BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB 127 #endif 128 129 #if defined(CONFIG_CMD_DHCP) 130 #define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \ 131 "bootcmd_dhcp=" \ 132 BOOTENV_RUN_USB_INIT \ 133 "if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \ 134 "source ${scriptaddr}; " \ 135 "fi\0" 136 #define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \ 137 "dhcp " 138 #else 139 #define BOOTENV_DEV_DHCP \ 140 BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP 141 #define BOOTENV_DEV_NAME_DHCP \ 142 BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP 143 #endif 144 145 #if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE) 146 #define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \ 147 "bootcmd_pxe=" \ 148 BOOTENV_RUN_USB_INIT \ 149 "dhcp; " \ 150 "if pxe get; then " \ 151 "pxe boot; " \ 152 "fi\0" 153 #define BOOTENV_DEV_NAME_PXE(devtypeu, devtypel, instance) \ 154 "pxe " 155 #else 156 #define BOOTENV_DEV_PXE \ 157 BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE 158 #define BOOTENV_DEV_NAME_PXE \ 159 BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE 160 #endif 161 162 #define BOOTENV_DEV_NAME(devtypeu, devtypel, instance) \ 163 BOOTENV_DEV_NAME_##devtypeu(devtypeu, devtypel, instance) 164 #define BOOTENV_BOOT_TARGETS \ 165 "boot_targets=" BOOT_TARGET_DEVICES(BOOTENV_DEV_NAME) "\0" 166 167 #define BOOTENV_DEV(devtypeu, devtypel, instance) \ 168 BOOTENV_DEV_##devtypeu(devtypeu, devtypel, instance) 169 #define BOOTENV \ 170 BOOTENV_SHARED_MMC \ 171 BOOTENV_SHARED_USB \ 172 BOOTENV_SHARED_SATA \ 173 BOOTENV_SHARED_SCSI \ 174 BOOTENV_SHARED_IDE \ 175 "boot_prefixes=/ /boot/\0" \ 176 "boot_scripts=boot.scr.uimg boot.scr\0" \ 177 "boot_script_dhcp=boot.scr.uimg\0" \ 178 BOOTENV_BOOT_TARGETS \ 179 \ 180 "boot_extlinux=" \ 181 "sysboot ${devtype} ${devnum}:${bootpart} any " \ 182 "${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \ 183 \ 184 "scan_dev_for_extlinux=" \ 185 "if test -e ${devtype} ${devnum}:${bootpart} " \ 186 "${prefix}extlinux/extlinux.conf; then " \ 187 "echo Found ${prefix}extlinux/extlinux.conf; " \ 188 "run boot_extlinux; " \ 189 "echo SCRIPT FAILED: continuing...; " \ 190 "fi\0" \ 191 \ 192 "boot_a_script=" \ 193 "load ${devtype} ${devnum}:${bootpart} " \ 194 "${scriptaddr} ${prefix}${script}; " \ 195 "source ${scriptaddr}\0" \ 196 \ 197 "scan_dev_for_scripts=" \ 198 "for script in ${boot_scripts}; do " \ 199 "if test -e ${devtype} ${devnum}:${bootpart} " \ 200 "${prefix}${script}; then " \ 201 "echo Found U-Boot script " \ 202 "${prefix}${script}; " \ 203 "run boot_a_script; " \ 204 "echo SCRIPT FAILED: continuing...; " \ 205 "fi; " \ 206 "done\0" \ 207 \ 208 "scan_dev_for_boot=" \ 209 "echo Scanning ${devtype} ${devnum}:${bootpart}...; " \ 210 "for prefix in ${boot_prefixes}; do " \ 211 "run scan_dev_for_extlinux; " \ 212 "run scan_dev_for_scripts; " \ 213 "done\0" \ 214 \ 215 "scan_dev_for_boot_part=" \ 216 "part list ${devtype} ${devnum} -bootable devplist; " \ 217 "env exists devplist || setenv devplist 1; " \ 218 "for bootpart in ${devplist}; do " \ 219 "if fstype ${devtype} ${devnum}:${bootpart} " \ 220 "bootfstype; then " \ 221 "run scan_dev_for_boot; " \ 222 "fi; " \ 223 "done\0" \ 224 \ 225 BOOT_TARGET_DEVICES(BOOTENV_DEV) \ 226 \ 227 "distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT \ 228 "for target in ${boot_targets}; do " \ 229 "run bootcmd_${target}; " \ 230 "done\0" 231 232 #ifndef CONFIG_BOOTCOMMAND 233 #define CONFIG_BOOTCOMMAND "run distro_bootcmd" 234 #endif 235 236 #endif /* _CONFIG_CMD_DISTRO_BOOTCMD_H */ 237