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 <dm.h>
12 #include <dm/root.h>
13 #include <image.h>
14 #include <asm/byteorder.h>
15 #include <asm/csr.h>
16 #include <dm/device.h>
17 #include <dm/root.h>
18 #include <u-boot/zlib.h>
19
20 DECLARE_GLOBAL_DATA_PTR;
21
board_quiesce_devices(void)22 __weak void board_quiesce_devices(void)
23 {
24 }
25
arch_fixup_fdt(void * blob)26 int arch_fixup_fdt(void *blob)
27 {
28 return 0;
29 }
30
31 /**
32 * announce_and_cleanup() - Print message and prepare for kernel boot
33 *
34 * @fake: non-zero to do everything except actually boot
35 */
announce_and_cleanup(int fake)36 static void announce_and_cleanup(int fake)
37 {
38 printf("\nStarting kernel ...%s\n\n", fake ?
39 "(fake run for tracing)" : "");
40 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
41 #ifdef CONFIG_BOOTSTAGE_FDT
42 bootstage_fdt_add_report();
43 #endif
44 #ifdef CONFIG_BOOTSTAGE_REPORT
45 bootstage_report();
46 #endif
47
48 #ifdef CONFIG_USB_DEVICE
49 udc_disconnect();
50 #endif
51
52 board_quiesce_devices();
53
54 /*
55 * Call remove function of all devices with a removal flag set.
56 * This may be useful for last-stage operations, like cancelling
57 * of DMA operation or releasing device internal buffers.
58 */
59 dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
60
61 cleanup_before_linux();
62 }
63
boot_prep_linux(bootm_headers_t * images)64 static void boot_prep_linux(bootm_headers_t *images)
65 {
66 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
67 #ifdef CONFIG_OF_LIBFDT
68 debug("using: FDT\n");
69 if (image_setup_linux(images)) {
70 printf("FDT creation failed! hanging...");
71 hang();
72 }
73 #endif
74 } else {
75 printf("Device tree not found or missing FDT support\n");
76 hang();
77 }
78 }
79
boot_jump_linux(bootm_headers_t * images,int flag)80 static void boot_jump_linux(bootm_headers_t *images, int flag)
81 {
82 void (*kernel)(ulong hart, void *dtb);
83 int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
84
85 kernel = (void (*)(ulong, void *))images->ep;
86
87 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
88
89 debug("## Transferring control to kernel (at address %08lx) ...\n",
90 (ulong)kernel);
91
92 announce_and_cleanup(fake);
93
94 if (!fake) {
95 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
96 kernel(gd->arch.boot_hart, images->ft_addr);
97 }
98 }
99
do_bootm_linux(int flag,int argc,char * const argv[],bootm_headers_t * images)100 int do_bootm_linux(int flag, int argc, char * const argv[],
101 bootm_headers_t *images)
102 {
103 /* No need for those on RISC-V */
104 if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
105 return -1;
106
107 if (flag & BOOTM_STATE_OS_PREP) {
108 boot_prep_linux(images);
109 return 0;
110 }
111
112 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
113 boot_jump_linux(images, flag);
114 return 0;
115 }
116
117 boot_prep_linux(images);
118 boot_jump_linux(images, flag);
119 return 0;
120 }
121
do_bootm_vxworks(int flag,int argc,char * const argv[],bootm_headers_t * images)122 int do_bootm_vxworks(int flag, int argc, char * const argv[],
123 bootm_headers_t *images)
124 {
125 return do_bootm_linux(flag, argc, argv, images);
126 }
127