SPDX: Convert all of our single license tags to Linux Kernel style
[oweals/u-boot.git] / arch / riscv / lib / bootm.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2011 Andes Technology Corporation
4  * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
5  * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
6  * Rick Chen, Andes Technology Corporation <rick@andestech.com>
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>
14 #include <asm/bootm.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
18 int arch_fixup_fdt(void *blob)
19 {
20         return 0;
21 }
22
23 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
24 {
25         bd_t    *bd = gd->bd;
26         char    *s;
27         int     machid = bd->bi_arch_number;
28         void    (*theKernel)(int arch, uint params);
29
30         /*
31          * allow the PREP bootm subcommand, it is required for bootm to work
32          */
33         if (flag & BOOTM_STATE_OS_PREP)
34                 return 0;
35
36         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
37                 return 1;
38
39         theKernel = (void (*)(int, uint))images->ep;
40
41         s = env_get("machid");
42         if (s) {
43                 machid = simple_strtoul(s, NULL, 16);
44                 printf("Using machid 0x%x from environment\n", machid);
45         }
46
47         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
48
49         debug("## Transferring control to Linux (at address %08lx) ...\n",
50                (ulong)theKernel);
51
52         if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
53 #ifdef CONFIG_OF_LIBFDT
54                 debug("using: FDT\n");
55                 if (image_setup_linux(images)) {
56                         printf("FDT creation failed! hanging...");
57                         hang();
58                 }
59 #endif
60         }
61
62         /* we assume that the kernel is in place */
63         printf("\nStarting kernel ...\n\n");
64
65         cleanup_before_linux();
66         if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
67                 theKernel(machid, (unsigned long)images->ft_addr);
68
69         /* does not return */
70
71         return 1;
72 }