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 ${devnum}; then " \ 35 "setenv devtype " #devtypel "; " \ 36 "run scan_dev_for_boot_part; " \ 37 "fi\0" 38 39 #define BOOTENV_SHARED_BLKDEV(devtypel) \ 40 #devtypel "_boot=" \ 41 BOOTENV_SHARED_BLKDEV_BODY(devtypel) 42 43 #define BOOTENV_DEV_BLKDEV(devtypeu, devtypel, instance) \ 44 "bootcmd_" #devtypel #instance "=" \ 45 "setenv devnum " #instance "; " \ 46 "run " #devtypel "_boot\0" 47 48 #define BOOTENV_DEV_NAME_BLKDEV(devtypeu, devtypel, instance) \ 49 #devtypel #instance " " 50 51 #ifdef CONFIG_SANDBOX 52 #define BOOTENV_SHARED_HOST BOOTENV_SHARED_BLKDEV(host) 53 #define BOOTENV_DEV_HOST BOOTENV_DEV_BLKDEV 54 #define BOOTENV_DEV_NAME_HOST BOOTENV_DEV_NAME_BLKDEV 55 #else 56 #define BOOTENV_SHARED_HOST 57 #define BOOTENV_DEV_HOST \ 58 BOOT_TARGET_DEVICES_references_HOST_without_CONFIG_SANDBOX 59 #define BOOTENV_DEV_NAME_HOST \ 60 BOOT_TARGET_DEVICES_references_HOST_without_CONFIG_SANDBOX 61 #endif 62 63 #ifdef CONFIG_CMD_MMC 64 #define BOOTENV_SHARED_MMC BOOTENV_SHARED_BLKDEV(mmc) 65 #define BOOTENV_DEV_MMC BOOTENV_DEV_BLKDEV 66 #define BOOTENV_DEV_NAME_MMC BOOTENV_DEV_NAME_BLKDEV 67 #else 68 #define BOOTENV_SHARED_MMC 69 #define BOOTENV_DEV_MMC \ 70 BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC 71 #define BOOTENV_DEV_NAME_MMC \ 72 BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC 73 #endif 74 75 #ifdef CONFIG_CMD_UBIFS 76 #define BOOTENV_SHARED_UBIFS \ 77 "ubifs_boot=" \ 78 "if ubi part UBI && ubifsmount ubi${devnum}:boot; then " \ 79 "setenv devtype ubi; " \ 80 "setenv bootpart 0; " \ 81 "run scan_dev_for_boot; " \ 82 "fi\0" 83 #define BOOTENV_DEV_UBIFS BOOTENV_DEV_BLKDEV 84 #define BOOTENV_DEV_NAME_UBIFS BOOTENV_DEV_NAME_BLKDEV 85 #else 86 #define BOOTENV_SHARED_UBIFS 87 #define BOOTENV_DEV_UBIFS \ 88 BOOT_TARGET_DEVICES_references_UBIFS_without_CONFIG_CMD_UBIFS 89 #define BOOTENV_DEV_NAME_UBIFS \ 90 BOOT_TARGET_DEVICES_references_UBIFS_without_CONFIG_CMD_UBIFS 91 #endif 92 93 #ifdef CONFIG_CMD_SATA 94 #define BOOTENV_SHARED_SATA BOOTENV_SHARED_BLKDEV(sata) 95 #define BOOTENV_DEV_SATA BOOTENV_DEV_BLKDEV 96 #define BOOTENV_DEV_NAME_SATA BOOTENV_DEV_NAME_BLKDEV 97 #else 98 #define BOOTENV_SHARED_SATA 99 #define BOOTENV_DEV_SATA \ 100 BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA 101 #define BOOTENV_DEV_NAME_SATA \ 102 BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA 103 #endif 104 105 #ifdef CONFIG_CMD_SCSI 106 #define BOOTENV_RUN_SCSI_INIT "run scsi_init; " 107 #define BOOTENV_SET_SCSI_NEED_INIT "setenv scsi_need_init; " 108 #define BOOTENV_SHARED_SCSI \ 109 "scsi_init=" \ 110 "if ${scsi_need_init}; then " \ 111 "setenv scsi_need_init false; " \ 112 "scsi scan; " \ 113 "fi\0" \ 114 \ 115 "scsi_boot=" \ 116 BOOTENV_RUN_SCSI_INIT \ 117 BOOTENV_SHARED_BLKDEV_BODY(scsi) 118 #define BOOTENV_DEV_SCSI BOOTENV_DEV_BLKDEV 119 #define BOOTENV_DEV_NAME_SCSI BOOTENV_DEV_NAME_BLKDEV 120 #else 121 #define BOOTENV_RUN_SCSI_INIT 122 #define BOOTENV_SET_SCSI_NEED_INIT 123 #define BOOTENV_SHARED_SCSI 124 #define BOOTENV_DEV_SCSI \ 125 BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI 126 #define BOOTENV_DEV_NAME_SCSI \ 127 BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI 128 #endif 129 130 #ifdef CONFIG_CMD_IDE 131 #define BOOTENV_SHARED_IDE BOOTENV_SHARED_BLKDEV(ide) 132 #define BOOTENV_DEV_IDE BOOTENV_DEV_BLKDEV 133 #define BOOTENV_DEV_NAME_IDE BOOTENV_DEV_NAME_BLKDEV 134 #else 135 #define BOOTENV_SHARED_IDE 136 #define BOOTENV_DEV_IDE \ 137 BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE 138 #define BOOTENV_DEV_NAME_IDE \ 139 BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE 140 #endif 141 142 #ifdef CONFIG_CMD_USB 143 #define BOOTENV_RUN_USB_INIT "usb start; " 144 #define BOOTENV_SHARED_USB \ 145 "usb_boot=" \ 146 BOOTENV_RUN_USB_INIT \ 147 BOOTENV_SHARED_BLKDEV_BODY(usb) 148 #define BOOTENV_DEV_USB BOOTENV_DEV_BLKDEV 149 #define BOOTENV_DEV_NAME_USB BOOTENV_DEV_NAME_BLKDEV 150 #else 151 #define BOOTENV_RUN_USB_INIT 152 #define BOOTENV_SHARED_USB 153 #define BOOTENV_DEV_USB \ 154 BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB 155 #define BOOTENV_DEV_NAME_USB \ 156 BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB 157 #endif 158 159 #if defined(CONFIG_CMD_DHCP) 160 #define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \ 161 "bootcmd_dhcp=" \ 162 BOOTENV_RUN_USB_INIT \ 163 "if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \ 164 "source ${scriptaddr}; " \ 165 "fi\0" 166 #define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \ 167 "dhcp " 168 #else 169 #define BOOTENV_DEV_DHCP \ 170 BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP 171 #define BOOTENV_DEV_NAME_DHCP \ 172 BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP 173 #endif 174 175 #if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE) 176 #define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \ 177 "bootcmd_pxe=" \ 178 BOOTENV_RUN_USB_INIT \ 179 "dhcp; " \ 180 "if pxe get; then " \ 181 "pxe boot; " \ 182 "fi\0" 183 #define BOOTENV_DEV_NAME_PXE(devtypeu, devtypel, instance) \ 184 "pxe " 185 #else 186 #define BOOTENV_DEV_PXE \ 187 BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE 188 #define BOOTENV_DEV_NAME_PXE \ 189 BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE 190 #endif 191 192 #define BOOTENV_DEV_NAME(devtypeu, devtypel, instance) \ 193 BOOTENV_DEV_NAME_##devtypeu(devtypeu, devtypel, instance) 194 #define BOOTENV_BOOT_TARGETS \ 195 "boot_targets=" BOOT_TARGET_DEVICES(BOOTENV_DEV_NAME) "\0" 196 197 #define BOOTENV_DEV(devtypeu, devtypel, instance) \ 198 BOOTENV_DEV_##devtypeu(devtypeu, devtypel, instance) 199 #define BOOTENV \ 200 BOOTENV_SHARED_HOST \ 201 BOOTENV_SHARED_MMC \ 202 BOOTENV_SHARED_USB \ 203 BOOTENV_SHARED_SATA \ 204 BOOTENV_SHARED_SCSI \ 205 BOOTENV_SHARED_IDE \ 206 BOOTENV_SHARED_UBIFS \ 207 "boot_prefixes=/ /boot/\0" \ 208 "boot_scripts=boot.scr.uimg boot.scr\0" \ 209 "boot_script_dhcp=boot.scr.uimg\0" \ 210 BOOTENV_BOOT_TARGETS \ 211 \ 212 "boot_extlinux=" \ 213 "sysboot ${devtype} ${devnum}:${distro_bootpart} any " \ 214 "${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \ 215 \ 216 "scan_dev_for_extlinux=" \ 217 "if test -e ${devtype} " \ 218 "${devnum}:${distro_bootpart} " \ 219 "${prefix}extlinux/extlinux.conf; then " \ 220 "echo Found ${prefix}extlinux/extlinux.conf; " \ 221 "run boot_extlinux; " \ 222 "echo SCRIPT FAILED: continuing...; " \ 223 "fi\0" \ 224 \ 225 "boot_a_script=" \ 226 "load ${devtype} ${devnum}:${distro_bootpart} " \ 227 "${scriptaddr} ${prefix}${script}; " \ 228 "source ${scriptaddr}\0" \ 229 \ 230 "scan_dev_for_scripts=" \ 231 "for script in ${boot_scripts}; do " \ 232 "if test -e ${devtype} " \ 233 "${devnum}:${distro_bootpart} " \ 234 "${prefix}${script}; then " \ 235 "echo Found U-Boot script " \ 236 "${prefix}${script}; " \ 237 "run boot_a_script; " \ 238 "echo SCRIPT FAILED: continuing...; " \ 239 "fi; " \ 240 "done\0" \ 241 \ 242 "scan_dev_for_boot=" \ 243 "echo Scanning ${devtype} " \ 244 "${devnum}:${distro_bootpart}...; " \ 245 "for prefix in ${boot_prefixes}; do " \ 246 "run scan_dev_for_extlinux; " \ 247 "run scan_dev_for_scripts; " \ 248 "done\0" \ 249 \ 250 "scan_dev_for_boot_part=" \ 251 "part list ${devtype} ${devnum} -bootable devplist; " \ 252 "env exists devplist || setenv devplist 1; " \ 253 "for distro_bootpart in ${devplist}; do " \ 254 "if fstype ${devtype} " \ 255 "${devnum}:${distro_bootpart} " \ 256 "bootfstype; then " \ 257 "run scan_dev_for_boot; " \ 258 "fi; " \ 259 "done\0" \ 260 \ 261 BOOT_TARGET_DEVICES(BOOTENV_DEV) \ 262 \ 263 "distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT \ 264 "for target in ${boot_targets}; do " \ 265 "run bootcmd_${target}; " \ 266 "done\0" 267 268 #ifndef CONFIG_BOOTCOMMAND 269 #define CONFIG_BOOTCOMMAND "run distro_bootcmd" 270 #endif 271 272 #endif /* _CONFIG_CMD_DISTRO_BOOTCMD_H */ 273