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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 */