mtd: sf: Make sf_mtd.c more robust
[platform/kernel/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 <asm/byteorder.h>
13 #include <asm/csr.h>
14 #include <dm/device.h>
15 #include <dm/root.h>
16 #include <u-boot/zlib.h>
17
18 DECLARE_GLOBAL_DATA_PTR;
19
20 __weak void board_quiesce_devices(void)
21 {
22 }
23
24 int arch_fixup_fdt(void *blob)
25 {
26         return 0;
27 }
28
29 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
30 {
31         void    (*kernel)(ulong hart, void *dtb);
32
33         /*
34          * allow the PREP bootm subcommand, it is required for bootm to work
35          */
36         if (flag & BOOTM_STATE_OS_PREP)
37                 return 0;
38
39         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
40                 return 1;
41
42         kernel = (void (*)(ulong, void *))images->ep;
43
44         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
45
46         debug("## Transferring control to Linux (at address %08lx) ...\n",
47                (ulong)kernel);
48
49         if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
50 #ifdef CONFIG_OF_LIBFDT
51                 debug("using: FDT\n");
52                 if (image_setup_linux(images)) {
53                         printf("FDT creation failed! hanging...");
54                         hang();
55                 }
56 #endif
57         }
58
59         /* we assume that the kernel is in place */
60         printf("\nStarting kernel ...\n\n");
61
62         /*
63          * Call remove function of all devices with a removal flag set.
64          * This may be useful for last-stage operations, like cancelling
65          * of DMA operation or releasing device internal buffers.
66          */
67         dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
68
69         cleanup_before_linux();
70
71         if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
72                 kernel(csr_read(mhartid), images->ft_addr);
73
74         /* does not return */
75
76         return 1;
77 }