1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
* Copyright (c) 2011 The Chromium OS Authors.
* SPDX-License-Identifier: GPL-2.0+
*/
#define DEBUG
#include <common.h>
#include <dm/root.h>
#include <os.h>
#include <asm/io.h>
#include <asm/state.h>
DECLARE_GLOBAL_DATA_PTR;
/* Enable access to PCI memory with map_sysmem() */
static bool enable_pci_map;
#ifdef CONFIG_PCI
/* Last device that was mapped into memory, and length of mapping */
static struct udevice *map_dev;
unsigned long map_len;
#endif
void reset_cpu(ulong ignored)
{
if (state_uninit())
os_exit(2);
if (dm_uninit())
os_exit(2);
/* This is considered normal termination for now */
os_exit(0);
}
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
reset_cpu(0);
return 0;
}
/* delay x useconds */
void __udelay(unsigned long usec)
{
os_usleep(usec);
}
int cleanup_before_linux(void)
{
return 0;
}
void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
#ifdef CONFIG_PCI
unsigned long plen = len;
void *ptr;
map_dev = NULL;
if (enable_pci_map && !pci_map_physmem(paddr, &len, &map_dev, &ptr)) {
if (plen != len) {
printf("%s: Warning: partial map at %x, wanted %lx, got %lx\n",
__func__, paddr, len, plen);
}
map_len = len;
return ptr;
}
#endif
return (void *)(gd->arch.ram_buf + paddr);
}
void unmap_physmem(const void *vaddr, unsigned long flags)
{
#ifdef CONFIG_PCI
if (map_dev) {
pci_unmap_physmem(vaddr, map_len, map_dev);
map_dev = NULL;
}
#endif
}
void sandbox_set_enable_pci_map(int enable)
{
enable_pci_map = enable;
}
phys_addr_t map_to_sysmem(const void *ptr)
{
return (u8 *)ptr - gd->arch.ram_buf;
}
void flush_dcache_range(unsigned long start, unsigned long stop)
{
}
int sandbox_read_fdt_from_file(void)
{
struct sandbox_state *state = state_get_current();
const char *fname = state->fdt_fname;
void *blob;
loff_t size;
int err;
int fd;
blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
if (!state->fdt_fname) {
err = fdt_create_empty_tree(blob, 256);
if (!err)
goto done;
printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
return -EINVAL;
}
err = os_get_filesize(fname, &size);
if (err < 0) {
printf("Failed to file FDT file '%s'\n", fname);
return err;
}
fd = os_open(fname, OS_O_RDONLY);
if (fd < 0) {
printf("Failed to open FDT file '%s'\n", fname);
return -EACCES;
}
if (os_read(fd, blob, size) != size) {
os_close(fd);
return -EIO;
}
os_close(fd);
done:
gd->fdt_blob = blob;
return 0;
}
|
