include/config_distro_bootcmd.h

   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 */