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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright (c) 2011 The Chromium OS Authors.
* SPDX-License-Identifier: GPL-2.0+
*/
#define DEBUG
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <linux/libfdt.h>
#include <os.h>
#include <asm/io.h>
#include <asm/state.h>
#include <dm/root.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 sandbox_exit(void)
{
/* Do this here while it still has an effect */
os_fd_restore();
if (state_uninit())
os_exit(2);
if (dm_uninit())
os_exit(2);
/* This is considered normal termination for now */
os_exit(0);
}
/* delay x useconds */
void __udelay(unsigned long usec)
{
struct sandbox_state *state = state_get_current();
if (!state->skip_delays)
os_usleep(usec);
}
int cleanup_before_linux(void)
{
return 0;
}
int cleanup_before_linux_select(int flags)
{
return 0;
}
void *phys_to_virt(phys_addr_t paddr)
{
return (void *)(gd->arch.ram_buf + paddr);
}
phys_addr_t virt_to_phys(void *vaddr)
{
return (phys_addr_t)((uint8_t *)vaddr - gd->arch.ram_buf);
}
void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
#if defined(CONFIG_PCI) && !defined(CONFIG_SPL_BUILD)
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__, (uint)paddr, len, plen);
}
map_len = len;
return ptr;
}
#endif
return phys_to_virt(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)
{
}
void invalidate_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;
}
ulong timer_get_boot_us(void)
{
static uint64_t base_count;
uint64_t count = os_get_nsec();
if (!base_count)
base_count = count;
return (count - base_count) / 1000;
}
|
