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