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Commit | Line | Data |
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463d47f6 ML |
1 | /* |
2 | * Copyright (C) 2011 Andes Technology Corporation | |
3 | * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> | |
4 | * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> | |
5 | * | |
1a459660 | 6 | * SPDX-License-Identifier: GPL-2.0+ |
463d47f6 ML |
7 | */ |
8 | ||
9 | #include <common.h> | |
10 | #include <command.h> | |
11 | #include <image.h> | |
12 | #include <u-boot/zlib.h> | |
13 | #include <asm/byteorder.h> | |
b841b6e9 | 14 | #include <asm/bootm.h> |
463d47f6 ML |
15 | |
16 | DECLARE_GLOBAL_DATA_PTR; | |
17 | ||
86132af7 | 18 | int arch_fixup_fdt(void *blob) |
19 | { | |
20 | return 0; | |
21 | } | |
22 | ||
23 | ||
463d47f6 ML |
24 | #if defined(CONFIG_SETUP_MEMORY_TAGS) || \ |
25 | defined(CONFIG_CMDLINE_TAG) || \ | |
26 | defined(CONFIG_INITRD_TAG) || \ | |
27 | defined(CONFIG_SERIAL_TAG) || \ | |
28 | defined(CONFIG_REVISION_TAG) | |
29 | static void setup_start_tag(bd_t *bd); | |
30 | ||
31 | # ifdef CONFIG_SETUP_MEMORY_TAGS | |
32 | static void setup_memory_tags(bd_t *bd); | |
33 | # endif | |
34 | static void setup_commandline_tag(bd_t *bd, char *commandline); | |
35 | ||
36 | # ifdef CONFIG_INITRD_TAG | |
37 | static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end); | |
38 | # endif | |
39 | static void setup_end_tag(bd_t *bd); | |
40 | ||
41 | static struct tag *params; | |
42 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ | |
43 | ||
44 | int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) | |
45 | { | |
46 | bd_t *bd = gd->bd; | |
47 | char *s; | |
48 | int machid = bd->bi_arch_number; | |
49 | void (*theKernel)(int zero, int arch, uint params); | |
50 | ||
51 | #ifdef CONFIG_CMDLINE_TAG | |
52 | char *commandline = getenv("bootargs"); | |
53 | #endif | |
54 | ||
2cb0e55a AB |
55 | /* |
56 | * allow the PREP bootm subcommand, it is required for bootm to work | |
57 | */ | |
58 | if (flag & BOOTM_STATE_OS_PREP) | |
59 | return 0; | |
60 | ||
463d47f6 ML |
61 | if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) |
62 | return 1; | |
63 | ||
64 | theKernel = (void (*)(int, int, uint))images->ep; | |
65 | ||
66 | s = getenv("machid"); | |
67 | if (s) { | |
68 | machid = simple_strtoul(s, NULL, 16); | |
69 | printf("Using machid 0x%x from environment\n", machid); | |
70 | } | |
71 | ||
770605e4 | 72 | bootstage_mark(BOOTSTAGE_ID_RUN_OS); |
463d47f6 ML |
73 | |
74 | debug("## Transferring control to Linux (at address %08lx) ...\n", | |
75 | (ulong)theKernel); | |
76 | ||
b841b6e9 | 77 | if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) { |
78 | #ifdef CONFIG_OF_LIBFDT | |
79 | debug("using: FDT\n"); | |
80 | if (image_setup_linux(images)) { | |
81 | printf("FDT creation failed! hanging..."); | |
82 | hang(); | |
83 | } | |
84 | #endif | |
85 | } else if (BOOTM_ENABLE_TAGS) { | |
463d47f6 ML |
86 | #if defined(CONFIG_SETUP_MEMORY_TAGS) || \ |
87 | defined(CONFIG_CMDLINE_TAG) || \ | |
88 | defined(CONFIG_INITRD_TAG) || \ | |
89 | defined(CONFIG_SERIAL_TAG) || \ | |
90 | defined(CONFIG_REVISION_TAG) | |
91 | setup_start_tag(bd); | |
92 | #ifdef CONFIG_SERIAL_TAG | |
93 | setup_serial_tag(¶ms); | |
94 | #endif | |
95 | #ifdef CONFIG_REVISION_TAG | |
96 | setup_revision_tag(¶ms); | |
97 | #endif | |
98 | #ifdef CONFIG_SETUP_MEMORY_TAGS | |
99 | setup_memory_tags(bd); | |
100 | #endif | |
101 | #ifdef CONFIG_CMDLINE_TAG | |
102 | setup_commandline_tag(bd, commandline); | |
103 | #endif | |
104 | #ifdef CONFIG_INITRD_TAG | |
105 | if (images->rd_start && images->rd_end) | |
106 | setup_initrd_tag(bd, images->rd_start, images->rd_end); | |
107 | #endif | |
108 | setup_end_tag(bd); | |
109 | #endif | |
110 | ||
111 | /* we assume that the kernel is in place */ | |
112 | printf("\nStarting kernel ...\n\n"); | |
113 | ||
114 | #ifdef CONFIG_USB_DEVICE | |
115 | { | |
116 | extern void udc_disconnect(void); | |
117 | udc_disconnect(); | |
118 | } | |
119 | #endif | |
b841b6e9 | 120 | } |
463d47f6 | 121 | cleanup_before_linux(); |
b841b6e9 | 122 | if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) |
123 | theKernel(0, machid, (unsigned long)images->ft_addr); | |
124 | else | |
125 | theKernel(0, machid, bd->bi_boot_params); | |
463d47f6 ML |
126 | /* does not return */ |
127 | ||
128 | return 1; | |
129 | } | |
130 | ||
463d47f6 ML |
131 | #if defined(CONFIG_SETUP_MEMORY_TAGS) || \ |
132 | defined(CONFIG_CMDLINE_TAG) || \ | |
133 | defined(CONFIG_INITRD_TAG) || \ | |
134 | defined(CONFIG_SERIAL_TAG) || \ | |
135 | defined(CONFIG_REVISION_TAG) | |
136 | static void setup_start_tag(bd_t *bd) | |
137 | { | |
138 | params = (struct tag *)bd->bi_boot_params; | |
139 | ||
140 | params->hdr.tag = ATAG_CORE; | |
141 | params->hdr.size = tag_size(tag_core); | |
142 | ||
143 | params->u.core.flags = 0; | |
144 | params->u.core.pagesize = 0; | |
145 | params->u.core.rootdev = 0; | |
146 | ||
147 | params = tag_next(params); | |
148 | } | |
149 | ||
463d47f6 ML |
150 | #ifdef CONFIG_SETUP_MEMORY_TAGS |
151 | static void setup_memory_tags(bd_t *bd) | |
152 | { | |
153 | int i; | |
154 | ||
155 | for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { | |
156 | params->hdr.tag = ATAG_MEM; | |
157 | params->hdr.size = tag_size(tag_mem32); | |
158 | ||
159 | params->u.mem.start = bd->bi_dram[i].start; | |
160 | params->u.mem.size = bd->bi_dram[i].size; | |
161 | ||
162 | params = tag_next(params); | |
163 | } | |
164 | } | |
165 | #endif /* CONFIG_SETUP_MEMORY_TAGS */ | |
166 | ||
463d47f6 ML |
167 | static void setup_commandline_tag(bd_t *bd, char *commandline) |
168 | { | |
169 | char *p; | |
170 | ||
171 | if (!commandline) | |
172 | return; | |
173 | ||
174 | /* eat leading white space */ | |
175 | for (p = commandline; *p == ' '; p++) | |
176 | ; | |
177 | ||
178 | /* skip non-existent command lines so the kernel will still | |
179 | * use its default command line. | |
180 | */ | |
181 | if (*p == '\0') | |
182 | return; | |
183 | ||
184 | params->hdr.tag = ATAG_CMDLINE; | |
185 | params->hdr.size = | |
186 | (sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2; | |
187 | ||
188 | strcpy(params->u.cmdline.cmdline, p) | |
189 | ; | |
190 | ||
191 | params = tag_next(params); | |
192 | } | |
193 | ||
463d47f6 ML |
194 | #ifdef CONFIG_INITRD_TAG |
195 | static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end) | |
196 | { | |
197 | /* an ATAG_INITRD node tells the kernel where the compressed | |
198 | * ramdisk can be found. ATAG_RDIMG is a better name, actually. | |
199 | */ | |
200 | params->hdr.tag = ATAG_INITRD2; | |
201 | params->hdr.size = tag_size(tag_initrd); | |
202 | ||
203 | params->u.initrd.start = initrd_start; | |
204 | params->u.initrd.size = initrd_end - initrd_start; | |
205 | ||
206 | params = tag_next(params); | |
207 | } | |
208 | #endif /* CONFIG_INITRD_TAG */ | |
209 | ||
210 | #ifdef CONFIG_SERIAL_TAG | |
211 | void setup_serial_tag(struct tag **tmp) | |
212 | { | |
213 | struct tag *params = *tmp; | |
214 | struct tag_serialnr serialnr; | |
215 | void get_board_serial(struct tag_serialnr *serialnr); | |
216 | ||
217 | get_board_serial(&serialnr); | |
218 | params->hdr.tag = ATAG_SERIAL; | |
219 | params->hdr.size = tag_size(tag_serialnr); | |
220 | params->u.serialnr.low = serialnr.low; | |
221 | params->u.serialnr.high = serialnr.high; | |
222 | params = tag_next(params); | |
223 | *tmp = params; | |
224 | } | |
225 | #endif | |
226 | ||
227 | #ifdef CONFIG_REVISION_TAG | |
228 | void setup_revision_tag(struct tag **in_params) | |
229 | { | |
230 | u32 rev = 0; | |
231 | u32 get_board_rev(void); | |
232 | ||
233 | rev = get_board_rev(); | |
234 | params->hdr.tag = ATAG_REVISION; | |
235 | params->hdr.size = tag_size(tag_revision); | |
236 | params->u.revision.rev = rev; | |
237 | params = tag_next(params); | |
238 | } | |
239 | #endif /* CONFIG_REVISION_TAG */ | |
240 | ||
463d47f6 ML |
241 | static void setup_end_tag(bd_t *bd) |
242 | { | |
243 | params->hdr.tag = ATAG_NONE; | |
244 | params->hdr.size = 0; | |
245 | } | |
246 | ||
247 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ |