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 <bootstage.h>
11 #include <command.h>
12 #include <dm.h>
13 #include <fdt_support.h>
14 #include <hang.h>
15 #include <log.h>
16 #include <asm/global_data.h>
17 #include <dm/root.h>
18 #include <image.h>
19 #include <asm/byteorder.h>
20 #include <asm/csr.h>
21 #include <asm/smp.h>
22 #include <dm/device.h>
23 #include <dm/root.h>
24 #include <u-boot/zlib.h>
25
26 DECLARE_GLOBAL_DATA_PTR;
27
board_quiesce_devices(void)28 __weak void board_quiesce_devices(void)
29 {
30 }
31
32 /**
33 * announce_and_cleanup() - Print message and prepare for kernel boot
34 *
35 * @fake: non-zero to do everything except actually boot
36 */
announce_and_cleanup(int fake)37 static void announce_and_cleanup(int fake)
38 {
39 printf("\nStarting kernel ...%s\n\n", fake ?
40 "(fake run for tracing)" : "");
41 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
42 #ifdef CONFIG_BOOTSTAGE_FDT
43 bootstage_fdt_add_report();
44 #endif
45 #ifdef CONFIG_BOOTSTAGE_REPORT
46 bootstage_report();
47 #endif
48
49 #ifdef CONFIG_USB_DEVICE
50 udc_disconnect();
51 #endif
52
53 board_quiesce_devices();
54
55 /*
56 * Call remove function of all devices with a removal flag set.
57 * This may be useful for last-stage operations, like cancelling
58 * of DMA operation or releasing device internal buffers.
59 */
60 dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
61
62 cleanup_before_linux();
63 }
64
boot_prep_linux(bootm_headers_t * images)65 static void boot_prep_linux(bootm_headers_t *images)
66 {
67 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
68 #ifdef CONFIG_OF_LIBFDT
69 debug("using: FDT\n");
70 if (image_setup_linux(images)) {
71 printf("FDT creation failed! hanging...");
72 hang();
73 }
74 #endif
75 } else {
76 printf("Device tree not found or missing FDT support\n");
77 hang();
78 }
79 }
80
boot_jump_linux(bootm_headers_t * images,int flag)81 static void boot_jump_linux(bootm_headers_t *images, int flag)
82 {
83 void (*kernel)(ulong hart, void *dtb);
84 int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
85 #ifdef CONFIG_SMP
86 int ret;
87 #endif
88
89 kernel = (void (*)(ulong, void *))images->ep;
90
91 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
92
93 debug("## Transferring control to kernel (at address %08lx) ...\n",
94 (ulong)kernel);
95
96 announce_and_cleanup(fake);
97
98 if (!fake) {
99 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
100 #ifdef CONFIG_SMP
101 ret = smp_call_function(images->ep,
102 (ulong)images->ft_addr, 0, 0);
103 if (ret)
104 hang();
105 #endif
106 kernel(gd->arch.boot_hart, images->ft_addr);
107 }
108 }
109 }
110
do_bootm_linux(int flag,int argc,char * const argv[],bootm_headers_t * images)111 int do_bootm_linux(int flag, int argc, char *const argv[],
112 bootm_headers_t *images)
113 {
114 /* No need for those on RISC-V */
115 if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
116 return -1;
117
118 if (flag & BOOTM_STATE_OS_PREP) {
119 boot_prep_linux(images);
120 return 0;
121 }
122
123 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
124 boot_jump_linux(images, flag);
125 return 0;
126 }
127
128 boot_prep_linux(images);
129 boot_jump_linux(images, flag);
130 return 0;
131 }
132
do_bootm_vxworks(int flag,int argc,char * const argv[],bootm_headers_t * images)133 int do_bootm_vxworks(int flag, int argc, char *const argv[],
134 bootm_headers_t *images)
135 {
136 return do_bootm_linux(flag, argc, argv, images);
137 }
138