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_SATA 76 #define BOOTENV_SHARED_SATA BOOTENV_SHARED_BLKDEV(sata) 77 #define BOOTENV_DEV_SATA BOOTENV_DEV_BLKDEV 78 #define BOOTENV_DEV_NAME_SATA BOOTENV_DEV_NAME_BLKDEV 79 #else 80 #define BOOTENV_SHARED_SATA 81 #define BOOTENV_DEV_SATA \ 82 BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA 83 #define BOOTENV_DEV_NAME_SATA \ 84 BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA 85 #endif 86 87 #ifdef CONFIG_CMD_SCSI 88 #define BOOTENV_RUN_SCSI_INIT "run scsi_init; " 89 #define BOOTENV_SET_SCSI_NEED_INIT "setenv scsi_need_init; " 90 #define BOOTENV_SHARED_SCSI \ 91 "scsi_init=" \ 92 "if ${scsi_need_init}; then " \ 93 "setenv scsi_need_init false; " \ 94 "scsi scan; " \ 95 "fi\0" \ 96 \ 97 "scsi_boot=" \ 98 BOOTENV_RUN_SCSI_INIT \ 99 BOOTENV_SHARED_BLKDEV_BODY(scsi) 100 #define BOOTENV_DEV_SCSI BOOTENV_DEV_BLKDEV 101 #define BOOTENV_DEV_NAME_SCSI BOOTENV_DEV_NAME_BLKDEV 102 #else 103 #define BOOTENV_RUN_SCSI_INIT 104 #define BOOTENV_SET_SCSI_NEED_INIT 105 #define BOOTENV_SHARED_SCSI 106 #define BOOTENV_DEV_SCSI \ 107 BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI 108 #define BOOTENV_DEV_NAME_SCSI \ 109 BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI 110 #endif 111 112 #ifdef CONFIG_CMD_IDE 113 #define BOOTENV_SHARED_IDE BOOTENV_SHARED_BLKDEV(ide) 114 #define BOOTENV_DEV_IDE BOOTENV_DEV_BLKDEV 115 #define BOOTENV_DEV_NAME_IDE BOOTENV_DEV_NAME_BLKDEV 116 #else 117 #define BOOTENV_SHARED_IDE 118 #define BOOTENV_DEV_IDE \ 119 BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE 120 #define BOOTENV_DEV_NAME_IDE \ 121 BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE 122 #endif 123 124 #ifdef CONFIG_CMD_USB 125 #define BOOTENV_RUN_USB_INIT "usb start; " 126 #define BOOTENV_SHARED_USB \ 127 "usb_boot=" \ 128 BOOTENV_RUN_USB_INIT \ 129 BOOTENV_SHARED_BLKDEV_BODY(usb) 130 #define BOOTENV_DEV_USB BOOTENV_DEV_BLKDEV 131 #define BOOTENV_DEV_NAME_USB BOOTENV_DEV_NAME_BLKDEV 132 #else 133 #define BOOTENV_RUN_USB_INIT 134 #define BOOTENV_SHARED_USB 135 #define BOOTENV_DEV_USB \ 136 BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB 137 #define BOOTENV_DEV_NAME_USB \ 138 BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB 139 #endif 140 141 #if defined(CONFIG_CMD_DHCP) 142 #define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \ 143 "bootcmd_dhcp=" \ 144 BOOTENV_RUN_USB_INIT \ 145 "if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \ 146 "source ${scriptaddr}; " \ 147 "fi\0" 148 #define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \ 149 "dhcp " 150 #else 151 #define BOOTENV_DEV_DHCP \ 152 BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP 153 #define BOOTENV_DEV_NAME_DHCP \ 154 BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP 155 #endif 156 157 #if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE) 158 #define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \ 159 "bootcmd_pxe=" \ 160 BOOTENV_RUN_USB_INIT \ 161 "dhcp; " \ 162 "if pxe get; then " \ 163 "pxe boot; " \ 164 "fi\0" 165 #define BOOTENV_DEV_NAME_PXE(devtypeu, devtypel, instance) \ 166 "pxe " 167 #else 168 #define BOOTENV_DEV_PXE \ 169 BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE 170 #define BOOTENV_DEV_NAME_PXE \ 171 BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE 172 #endif 173 174 #define BOOTENV_DEV_NAME(devtypeu, devtypel, instance) \ 175 BOOTENV_DEV_NAME_##devtypeu(devtypeu, devtypel, instance) 176 #define BOOTENV_BOOT_TARGETS \ 177 "boot_targets=" BOOT_TARGET_DEVICES(BOOTENV_DEV_NAME) "\0" 178 179 #define BOOTENV_DEV(devtypeu, devtypel, instance) \ 180 BOOTENV_DEV_##devtypeu(devtypeu, devtypel, instance) 181 #define BOOTENV \ 182 BOOTENV_SHARED_HOST \ 183 BOOTENV_SHARED_MMC \ 184 BOOTENV_SHARED_USB \ 185 BOOTENV_SHARED_SATA \ 186 BOOTENV_SHARED_SCSI \ 187 BOOTENV_SHARED_IDE \ 188 "boot_prefixes=/ /boot/\0" \ 189 "boot_scripts=boot.scr.uimg boot.scr\0" \ 190 "boot_script_dhcp=boot.scr.uimg\0" \ 191 BOOTENV_BOOT_TARGETS \ 192 \ 193 "boot_extlinux=" \ 194 "sysboot ${devtype} ${devnum}:${bootpart} any " \ 195 "${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \ 196 \ 197 "scan_dev_for_extlinux=" \ 198 "if test -e ${devtype} ${devnum}:${bootpart} " \ 199 "${prefix}extlinux/extlinux.conf; then " \ 200 "echo Found ${prefix}extlinux/extlinux.conf; " \ 201 "run boot_extlinux; " \ 202 "echo SCRIPT FAILED: continuing...; " \ 203 "fi\0" \ 204 \ 205 "boot_a_script=" \ 206 "load ${devtype} ${devnum}:${bootpart} " \ 207 "${scriptaddr} ${prefix}${script}; " \ 208 "source ${scriptaddr}\0" \ 209 \ 210 "scan_dev_for_scripts=" \ 211 "for script in ${boot_scripts}; do " \ 212 "if test -e ${devtype} ${devnum}:${bootpart} " \ 213 "${prefix}${script}; then " \ 214 "echo Found U-Boot script " \ 215 "${prefix}${script}; " \ 216 "run boot_a_script; " \ 217 "echo SCRIPT FAILED: continuing...; " \ 218 "fi; " \ 219 "done\0" \ 220 \ 221 "scan_dev_for_boot=" \ 222 "echo Scanning ${devtype} ${devnum}:${bootpart}...; " \ 223 "for prefix in ${boot_prefixes}; do " \ 224 "run scan_dev_for_extlinux; " \ 225 "run scan_dev_for_scripts; " \ 226 "done\0" \ 227 \ 228 "scan_dev_for_boot_part=" \ 229 "part list ${devtype} ${devnum} -bootable devplist; " \ 230 "env exists devplist || setenv devplist 1; " \ 231 "for bootpart in ${devplist}; do " \ 232 "if fstype ${devtype} ${devnum}:${bootpart} " \ 233 "bootfstype; then " \ 234 "run scan_dev_for_boot; " \ 235 "fi; " \ 236 "done\0" \ 237 \ 238 BOOT_TARGET_DEVICES(BOOTENV_DEV) \ 239 \ 240 "distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT \ 241 "for target in ${boot_targets}; do " \ 242 "run bootcmd_${target}; " \ 243 "done\0" 244 245 #ifndef CONFIG_BOOTCOMMAND 246 #define CONFIG_BOOTCOMMAND "run distro_bootcmd" 247 #endif 248 249 #endif /* _CONFIG_CMD_DISTRO_BOOTCMD_H */ 250