1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2011
4 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
5 */
6
7 #include <common.h>
8 #include <command.h>
9 #include <cmd_spl.h>
10 #include <linux/libfdt.h>
11
12 DECLARE_GLOBAL_DATA_PTR;
13
14 static const char **subcmd_list[] = {
15
16 [SPL_EXPORT_FDT] = (const char * []) {
17 #ifdef CONFIG_OF_LIBFDT
18 "start",
19 "loados",
20 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
21 "ramdisk",
22 #endif
23 "fdt",
24 "cmdline",
25 "bdt",
26 "prep",
27 #endif
28 NULL,
29 },
30 [SPL_EXPORT_ATAGS] = (const char * []) {
31 #if defined(CONFIG_SETUP_MEMORY_TAGS) || \
32 defined(CONFIG_CMDLINE_TAG) || \
33 defined(CONFIG_INITRD_TAG) || \
34 defined(CONFIG_SERIAL_TAG) || \
35 defined(CONFIG_REVISION_TAG)
36 "start",
37 "loados",
38 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
39 "ramdisk",
40 #endif
41 "cmdline",
42 "bdt",
43 "prep",
44 #endif
45 NULL,
46 },
47 NULL
48 };
49
50 /* Calls bootm with the parameters given */
call_bootm(int argc,char * const argv[],const char * subcommand[])51 static int call_bootm(int argc, char * const argv[], const char *subcommand[])
52 {
53 char *bootm_argv[5];
54
55 int i = 0;
56 int ret = 0;
57 int j;
58
59 /* create paramter array */
60 bootm_argv[0] = "do_bootm";
61 switch (argc) {
62 case 3:
63 bootm_argv[4] = argv[2]; /* fdt addr */
64 case 2:
65 bootm_argv[3] = argv[1]; /* initrd addr */
66 case 1:
67 bootm_argv[2] = argv[0]; /* kernel addr */
68 }
69
70
71 /*
72 * - do the work -
73 * exec subcommands of do_bootm to init the images
74 * data structure
75 */
76 while (subcommand[i] != NULL) {
77 bootm_argv[1] = (char *)subcommand[i];
78 debug("args %d: %s %s ", argc, bootm_argv[0], bootm_argv[1]);
79 for (j = 0; j < argc; j++)
80 debug("%s ", bootm_argv[j + 2]);
81 debug("\n");
82
83 ret = do_bootm(find_cmd("do_bootm"), 0, argc+2,
84 bootm_argv);
85 debug("Subcommand retcode: %d\n", ret);
86 i++;
87 }
88
89 if (ret) {
90 printf("ERROR prep subcommand failed!\n");
91 return -1;
92 }
93
94 return 0;
95 }
96
97 static cmd_tbl_t cmd_spl_export_sub[] = {
98 U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)SPL_EXPORT_FDT, "", ""),
99 U_BOOT_CMD_MKENT(atags, 0, 1, (void *)SPL_EXPORT_ATAGS, "", ""),
100 };
101
spl_export(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])102 static int spl_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
103 {
104 const cmd_tbl_t *c;
105
106 if (argc < 2) /* no subcommand */
107 return cmd_usage(cmdtp);
108
109 c = find_cmd_tbl(argv[1], &cmd_spl_export_sub[0],
110 ARRAY_SIZE(cmd_spl_export_sub));
111 if ((c) && ((long)c->cmd <= SPL_EXPORT_LAST)) {
112 argc -= 2;
113 argv += 2;
114 if (call_bootm(argc, argv, subcmd_list[(long)c->cmd]))
115 return -1;
116 switch ((long)c->cmd) {
117 #ifdef CONFIG_OF_LIBFDT
118 case SPL_EXPORT_FDT:
119 printf("Argument image is now in RAM: 0x%p\n",
120 (void *)images.ft_addr);
121 env_set_addr("fdtargsaddr", images.ft_addr);
122 env_set_hex("fdtargslen", fdt_totalsize(images.ft_addr));
123 #ifdef CONFIG_CMD_SPL_WRITE_SIZE
124 if (fdt_totalsize(images.ft_addr) >
125 CONFIG_CMD_SPL_WRITE_SIZE)
126 puts("WARN: FDT size > CMD_SPL_WRITE_SIZE\n");
127 #endif
128 break;
129 #endif
130 case SPL_EXPORT_ATAGS:
131 printf("Argument image is now in RAM at: 0x%p\n",
132 (void *)gd->bd->bi_boot_params);
133 break;
134 }
135 } else {
136 /* Unrecognized command */
137 return cmd_usage(cmdtp);
138 }
139
140 return 0;
141 }
142
143 static cmd_tbl_t cmd_spl_sub[] = {
144 U_BOOT_CMD_MKENT(export, 0, 1, (void *)SPL_EXPORT, "", ""),
145 };
146
do_spl(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])147 static int do_spl(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
148 {
149 const cmd_tbl_t *c;
150 int cmd;
151
152 if (argc < 2) /* no subcommand */
153 return cmd_usage(cmdtp);
154
155 c = find_cmd_tbl(argv[1], &cmd_spl_sub[0], ARRAY_SIZE(cmd_spl_sub));
156 if (c) {
157 cmd = (long)c->cmd;
158 switch (cmd) {
159 case SPL_EXPORT:
160 argc--;
161 argv++;
162 if (spl_export(cmdtp, flag, argc, argv))
163 printf("Subcommand failed\n");
164 break;
165 default:
166 /* unrecognized command */
167 return cmd_usage(cmdtp);
168 }
169 } else {
170 /* Unrecognized command */
171 return cmd_usage(cmdtp);
172 }
173 return 0;
174 }
175
176 U_BOOT_CMD(
177 spl, 6 , 1, do_spl, "SPL configuration",
178 "export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr]\n"
179 "\timg\t\t\"atags\" or \"fdt\"\n"
180 "\tkernel_addr\taddress where a kernel image is stored.\n"
181 "\t\t\tkernel is loaded as part of the boot process, but it is not started.\n"
182 "\tinitrd_addr\taddress of initial ramdisk\n"
183 "\t\t\tcan be set to \"-\" if fdt_addr without initrd_addr is used.\n"
184 "\tfdt_addr\tin case of fdt, the address of the device tree.\n"
185 );
186