]>
git.ipfire.org Git - people/ms/u-boot.git/blob - arch/nds32/lib/bootm.c
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>
6 * SPDX-License-Identifier: GPL-2.0+
12 #include <u-boot/zlib.h>
13 #include <asm/byteorder.h>
14 #include <asm/bootm.h>
16 DECLARE_GLOBAL_DATA_PTR
;
18 int arch_fixup_fdt(void *blob
)
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
);
31 # ifdef CONFIG_SETUP_MEMORY_TAGS
32 static void setup_memory_tags(bd_t
*bd
);
34 static void setup_commandline_tag(bd_t
*bd
, char *commandline
);
36 # ifdef CONFIG_INITRD_TAG
37 static void setup_initrd_tag(bd_t
*bd
, ulong initrd_start
, ulong initrd_end
);
39 static void setup_end_tag(bd_t
*bd
);
41 static struct tag
*params
;
42 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
44 int do_bootm_linux(int flag
, int argc
, char *argv
[], bootm_headers_t
*images
)
48 int machid
= bd
->bi_arch_number
;
49 void (*theKernel
)(int zero
, int arch
, uint params
);
51 #ifdef CONFIG_CMDLINE_TAG
52 char *commandline
= getenv("bootargs");
56 * allow the PREP bootm subcommand, it is required for bootm to work
58 if (flag
& BOOTM_STATE_OS_PREP
)
61 if ((flag
!= 0) && (flag
!= BOOTM_STATE_OS_GO
))
64 theKernel
= (void (*)(int, int, uint
))images
->ep
;
68 machid
= simple_strtoul(s
, NULL
, 16);
69 printf("Using machid 0x%x from environment\n", machid
);
72 bootstage_mark(BOOTSTAGE_ID_RUN_OS
);
74 debug("## Transferring control to Linux (at address %08lx) ...\n",
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...");
85 } else if (BOOTM_ENABLE_TAGS
) {
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)
92 #ifdef CONFIG_SERIAL_TAG
93 setup_serial_tag(¶ms
);
95 #ifdef CONFIG_REVISION_TAG
96 setup_revision_tag(¶ms
);
98 #ifdef CONFIG_SETUP_MEMORY_TAGS
99 setup_memory_tags(bd
);
101 #ifdef CONFIG_CMDLINE_TAG
102 setup_commandline_tag(bd
, commandline
);
104 #ifdef CONFIG_INITRD_TAG
105 if (images
->rd_start
&& images
->rd_end
)
106 setup_initrd_tag(bd
, images
->rd_start
, images
->rd_end
);
111 /* we assume that the kernel is in place */
112 printf("\nStarting kernel ...\n\n");
114 #ifdef CONFIG_USB_DEVICE
116 extern void udc_disconnect(void);
121 cleanup_before_linux();
122 if (IMAGE_ENABLE_OF_LIBFDT
&& images
->ft_len
)
123 theKernel(0, machid
, (unsigned long)images
->ft_addr
);
125 theKernel(0, machid
, bd
->bi_boot_params
);
126 /* does not return */
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
)
138 params
= (struct tag
*)bd
->bi_boot_params
;
140 params
->hdr
.tag
= ATAG_CORE
;
141 params
->hdr
.size
= tag_size(tag_core
);
143 params
->u
.core
.flags
= 0;
144 params
->u
.core
.pagesize
= 0;
145 params
->u
.core
.rootdev
= 0;
147 params
= tag_next(params
);
150 #ifdef CONFIG_SETUP_MEMORY_TAGS
151 static void setup_memory_tags(bd_t
*bd
)
155 for (i
= 0; i
< CONFIG_NR_DRAM_BANKS
; i
++) {
156 params
->hdr
.tag
= ATAG_MEM
;
157 params
->hdr
.size
= tag_size(tag_mem32
);
159 params
->u
.mem
.start
= bd
->bi_dram
[i
].start
;
160 params
->u
.mem
.size
= bd
->bi_dram
[i
].size
;
162 params
= tag_next(params
);
165 #endif /* CONFIG_SETUP_MEMORY_TAGS */
167 static void setup_commandline_tag(bd_t
*bd
, char *commandline
)
174 /* eat leading white space */
175 for (p
= commandline
; *p
== ' '; p
++)
178 /* skip non-existent command lines so the kernel will still
179 * use its default command line.
184 params
->hdr
.tag
= ATAG_CMDLINE
;
186 (sizeof(struct tag_header
) + strlen(p
) + 1 + 4) >> 2;
188 strcpy(params
->u
.cmdline
.cmdline
, p
)
191 params
= tag_next(params
);
194 #ifdef CONFIG_INITRD_TAG
195 static void setup_initrd_tag(bd_t
*bd
, ulong initrd_start
, ulong initrd_end
)
197 /* an ATAG_INITRD node tells the kernel where the compressed
198 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
200 params
->hdr
.tag
= ATAG_INITRD2
;
201 params
->hdr
.size
= tag_size(tag_initrd
);
203 params
->u
.initrd
.start
= initrd_start
;
204 params
->u
.initrd
.size
= initrd_end
- initrd_start
;
206 params
= tag_next(params
);
208 #endif /* CONFIG_INITRD_TAG */
210 #ifdef CONFIG_SERIAL_TAG
211 void setup_serial_tag(struct tag
**tmp
)
213 struct tag
*params
= *tmp
;
214 struct tag_serialnr serialnr
;
215 void get_board_serial(struct tag_serialnr
*serialnr
);
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
);
227 #ifdef CONFIG_REVISION_TAG
228 void setup_revision_tag(struct tag
**in_params
)
231 u32
get_board_rev(void);
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
);
239 #endif /* CONFIG_REVISION_TAG */
241 static void setup_end_tag(bd_t
*bd
)
243 params
->hdr
.tag
= ATAG_NONE
;
244 params
->hdr
.size
= 0;
247 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */