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_EFI_LOADER
94 #if defined(CONFIG_ARM64)
95 #define BOOTEFI_NAME "bootaa64.efi"
96 #elif defined(CONFIG_ARM)
97 #define BOOTEFI_NAME "bootarm.efi"
98 #endif
99 #endif
100 
101 #ifdef BOOTEFI_NAME
102 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
103 /*
104  * On 32bit ARM systems there is a reasonable number of systems that follow
105  * the $soc-$board$boardver.dtb name scheme for their device trees. Use that
106  * scheme if we don't have an explicit fdtfile variable.
107  */
108 #define BOOTENV_EFI_SET_FDTFILE_FALLBACK                                  \
109 	"if test -z \"${fdtfile}\" -a -n \"${soc}\"; then "               \
110 	  "setenv efi_fdtfile ${soc}-${board}${boardver}.dtb; "           \
111 	"fi; "
112 #else
113 #define BOOTENV_EFI_SET_FDTFILE_FALLBACK
114 #endif
115 
116 
117 #define BOOTENV_SHARED_EFI                                                \
118 	"boot_efi_binary="                                                \
119 		"load ${devtype} ${devnum}:${distro_bootpart} "           \
120 			"${kernel_addr_r} efi/boot/"BOOTEFI_NAME"; "      \
121 		"if fdt addr ${fdt_addr_r}; then "                        \
122 			"bootefi ${kernel_addr_r} ${fdt_addr_r};"         \
123 		"else"                                                    \
124 			"bootefi ${kernel_addr_r} ${fdtcontroladdr};"     \
125 		"fi\0"                                                    \
126 	\
127 	"load_efi_dtb="                                                   \
128 		"load ${devtype} ${devnum}:${distro_bootpart} "           \
129 			"${fdt_addr_r} ${prefix}${efi_fdtfile}\0"         \
130 	\
131 	"efi_dtb_prefixes=/ /dtb/ /dtb/current/\0"                        \
132 	"scan_dev_for_efi="                                               \
133 		"setenv efi_fdtfile ${fdtfile}; "                         \
134 		BOOTENV_EFI_SET_FDTFILE_FALLBACK                          \
135 		"for prefix in ${efi_dtb_prefixes}; do "                  \
136 			"if test -e ${devtype} "                          \
137 					"${devnum}:${distro_bootpart} "   \
138 					"${prefix}${efi_fdtfile}; then "  \
139 				"run load_efi_dtb; "                      \
140 			"fi;"                                             \
141 		"done;"                                                   \
142 		"if test -e ${devtype} ${devnum}:${distro_bootpart} "     \
143 					"efi/boot/"BOOTEFI_NAME"; then "  \
144 				"echo Found EFI removable media binary "  \
145 					"efi/boot/"BOOTEFI_NAME"; "       \
146 				"run boot_efi_binary; "                   \
147 				"echo EFI LOAD FAILED: continuing...; "   \
148 		"fi; "                                                    \
149 		"setenv efi_fdtfile\0"
150 #define SCAN_DEV_FOR_EFI "run scan_dev_for_efi;"
151 #else
152 #define BOOTENV_SHARED_EFI
153 #define SCAN_DEV_FOR_EFI
154 #endif
155 
156 #ifdef CONFIG_CMD_SATA
157 #define BOOTENV_SHARED_SATA	BOOTENV_SHARED_BLKDEV(sata)
158 #define BOOTENV_DEV_SATA	BOOTENV_DEV_BLKDEV
159 #define BOOTENV_DEV_NAME_SATA	BOOTENV_DEV_NAME_BLKDEV
160 #else
161 #define BOOTENV_SHARED_SATA
162 #define BOOTENV_DEV_SATA \
163 	BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA
164 #define BOOTENV_DEV_NAME_SATA \
165 	BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA
166 #endif
167 
168 #ifdef CONFIG_CMD_SCSI
169 #define BOOTENV_RUN_SCSI_INIT "run scsi_init; "
170 #define BOOTENV_SET_SCSI_NEED_INIT "setenv scsi_need_init; "
171 #define BOOTENV_SHARED_SCSI \
172 	"scsi_init=" \
173 		"if ${scsi_need_init}; then " \
174 			"setenv scsi_need_init false; " \
175 			"scsi scan; " \
176 		"fi\0" \
177 	\
178 	"scsi_boot=" \
179 		BOOTENV_RUN_SCSI_INIT \
180 		BOOTENV_SHARED_BLKDEV_BODY(scsi)
181 #define BOOTENV_DEV_SCSI	BOOTENV_DEV_BLKDEV
182 #define BOOTENV_DEV_NAME_SCSI	BOOTENV_DEV_NAME_BLKDEV
183 #else
184 #define BOOTENV_RUN_SCSI_INIT
185 #define BOOTENV_SET_SCSI_NEED_INIT
186 #define BOOTENV_SHARED_SCSI
187 #define BOOTENV_DEV_SCSI \
188 	BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI
189 #define BOOTENV_DEV_NAME_SCSI \
190 	BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI
191 #endif
192 
193 #ifdef CONFIG_CMD_IDE
194 #define BOOTENV_SHARED_IDE	BOOTENV_SHARED_BLKDEV(ide)
195 #define BOOTENV_DEV_IDE		BOOTENV_DEV_BLKDEV
196 #define BOOTENV_DEV_NAME_IDE	BOOTENV_DEV_NAME_BLKDEV
197 #else
198 #define BOOTENV_SHARED_IDE
199 #define BOOTENV_DEV_IDE \
200 	BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE
201 #define BOOTENV_DEV_NAME_IDE \
202 	BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE
203 #endif
204 
205 #if defined(CONFIG_CMD_PCI_ENUM) || defined(CONFIG_DM_PCI)
206 #define BOOTENV_RUN_NET_PCI_ENUM "run boot_net_pci_enum; "
207 #define BOOTENV_SHARED_PCI \
208 	"boot_net_pci_enum=pci enum\0"
209 #else
210 #define BOOTENV_RUN_NET_PCI_ENUM
211 #define BOOTENV_SHARED_PCI
212 #endif
213 
214 #ifdef CONFIG_CMD_USB
215 #define BOOTENV_RUN_NET_USB_START "run boot_net_usb_start; "
216 #define BOOTENV_SHARED_USB \
217 	"boot_net_usb_start=usb start\0" \
218 	"usb_boot=" \
219 		"usb start; " \
220 		BOOTENV_SHARED_BLKDEV_BODY(usb)
221 #define BOOTENV_DEV_USB		BOOTENV_DEV_BLKDEV
222 #define BOOTENV_DEV_NAME_USB	BOOTENV_DEV_NAME_BLKDEV
223 #else
224 #define BOOTENV_RUN_NET_USB_START
225 #define BOOTENV_SHARED_USB
226 #define BOOTENV_DEV_USB \
227 	BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB
228 #define BOOTENV_DEV_NAME_USB \
229 	BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB
230 #endif
231 
232 #if defined(CONFIG_CMD_DHCP)
233 #define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \
234 	"bootcmd_dhcp=" \
235 		BOOTENV_RUN_NET_USB_START \
236 		BOOTENV_RUN_NET_PCI_ENUM \
237 		"if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \
238 			"source ${scriptaddr}; " \
239 		"fi\0"
240 #define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \
241 	"dhcp "
242 #else
243 #define BOOTENV_DEV_DHCP \
244 	BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP
245 #define BOOTENV_DEV_NAME_DHCP \
246 	BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP
247 #endif
248 
249 #if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE)
250 #define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \
251 	"bootcmd_pxe=" \
252 		BOOTENV_RUN_NET_USB_START \
253 		BOOTENV_RUN_NET_PCI_ENUM \
254 		"dhcp; " \
255 		"if pxe get; then " \
256 			"pxe boot; " \
257 		"fi\0"
258 #define BOOTENV_DEV_NAME_PXE(devtypeu, devtypel, instance) \
259 	"pxe "
260 #else
261 #define BOOTENV_DEV_PXE \
262 	BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE
263 #define BOOTENV_DEV_NAME_PXE \
264 	BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE
265 #endif
266 
267 #define BOOTENV_DEV_NAME(devtypeu, devtypel, instance) \
268 	BOOTENV_DEV_NAME_##devtypeu(devtypeu, devtypel, instance)
269 #define BOOTENV_BOOT_TARGETS \
270 	"boot_targets=" BOOT_TARGET_DEVICES(BOOTENV_DEV_NAME) "\0"
271 
272 #define BOOTENV_DEV(devtypeu, devtypel, instance) \
273 	BOOTENV_DEV_##devtypeu(devtypeu, devtypel, instance)
274 #define BOOTENV \
275 	BOOTENV_SHARED_HOST \
276 	BOOTENV_SHARED_MMC \
277 	BOOTENV_SHARED_PCI \
278 	BOOTENV_SHARED_USB \
279 	BOOTENV_SHARED_SATA \
280 	BOOTENV_SHARED_SCSI \
281 	BOOTENV_SHARED_IDE \
282 	BOOTENV_SHARED_UBIFS \
283 	BOOTENV_SHARED_EFI \
284 	"boot_prefixes=/ /boot/\0" \
285 	"boot_scripts=boot.scr.uimg boot.scr\0" \
286 	"boot_script_dhcp=boot.scr.uimg\0" \
287 	BOOTENV_BOOT_TARGETS \
288 	\
289 	"boot_extlinux="                                                  \
290 		"sysboot ${devtype} ${devnum}:${distro_bootpart} any "    \
291 			"${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \
292 	\
293 	"scan_dev_for_extlinux="                                          \
294 		"if test -e ${devtype} "                                  \
295 				"${devnum}:${distro_bootpart} "           \
296 				"${prefix}extlinux/extlinux.conf; then "  \
297 			"echo Found ${prefix}extlinux/extlinux.conf; "    \
298 			"run boot_extlinux; "                             \
299 			"echo SCRIPT FAILED: continuing...; "             \
300 		"fi\0"                                                    \
301 	\
302 	"boot_a_script="                                                  \
303 		"load ${devtype} ${devnum}:${distro_bootpart} "           \
304 			"${scriptaddr} ${prefix}${script}; "              \
305 		"source ${scriptaddr}\0"                                  \
306 	\
307 	"scan_dev_for_scripts="                                           \
308 		"for script in ${boot_scripts}; do "                      \
309 			"if test -e ${devtype} "                          \
310 					"${devnum}:${distro_bootpart} "   \
311 					"${prefix}${script}; then "       \
312 				"echo Found U-Boot script "               \
313 					"${prefix}${script}; "            \
314 				"run boot_a_script; "                     \
315 				"echo SCRIPT FAILED: continuing...; "     \
316 			"fi; "                                            \
317 		"done\0"                                                  \
318 	\
319 	"scan_dev_for_boot="                                              \
320 		"echo Scanning ${devtype} "                               \
321 				"${devnum}:${distro_bootpart}...; "       \
322 		"for prefix in ${boot_prefixes}; do "                     \
323 			"run scan_dev_for_extlinux; "                     \
324 			"run scan_dev_for_scripts; "                      \
325 		"done;"                                                   \
326 		SCAN_DEV_FOR_EFI                                          \
327 		"\0"                                                      \
328 	\
329 	"scan_dev_for_boot_part="                                         \
330 		"part list ${devtype} ${devnum} -bootable devplist; "     \
331 		"env exists devplist || setenv devplist 1; "              \
332 		"for distro_bootpart in ${devplist}; do "                 \
333 			"if fstype ${devtype} "                           \
334 					"${devnum}:${distro_bootpart} "   \
335 					"bootfstype; then "               \
336 				"run scan_dev_for_boot; "                 \
337 			"fi; "                                            \
338 		"done\0"                                                  \
339 	\
340 	BOOT_TARGET_DEVICES(BOOTENV_DEV)                                  \
341 	\
342 	"distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT                      \
343 		"for target in ${boot_targets}; do "                      \
344 			"run bootcmd_${target}; "                         \
345 		"done\0"
346 
347 #ifndef CONFIG_BOOTCOMMAND
348 #define CONFIG_BOOTCOMMAND "run distro_bootcmd"
349 #endif
350 
351 #endif  /* _CONFIG_CMD_DISTRO_BOOTCMD_H */
352