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Commit | Line | Data |
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4b0730d2 SG |
1 | /* |
2 | * Copyright (c) 2011 The Chromium OS Authors. | |
1a459660 | 3 | * SPDX-License-Identifier: GPL-2.0+ |
4b0730d2 | 4 | */ |
9569c406 | 5 | #define DEBUG |
4b0730d2 | 6 | #include <common.h> |
9d922450 | 7 | #include <dm.h> |
f4289cbd SG |
8 | #include <errno.h> |
9 | #include <libfdt.h> | |
7a9219c1 | 10 | #include <os.h> |
b45122fd | 11 | #include <asm/io.h> |
5c2859cd | 12 | #include <asm/state.h> |
6e206504 | 13 | #include <dm/root.h> |
4b0730d2 SG |
14 | |
15 | DECLARE_GLOBAL_DATA_PTR; | |
16 | ||
9569c406 SG |
17 | /* Enable access to PCI memory with map_sysmem() */ |
18 | static bool enable_pci_map; | |
19 | ||
20 | #ifdef CONFIG_PCI | |
21 | /* Last device that was mapped into memory, and length of mapping */ | |
22 | static struct udevice *map_dev; | |
23 | unsigned long map_len; | |
24 | #endif | |
25 | ||
5010d98f | 26 | void sandbox_exit(void) |
4b0730d2 | 27 | { |
8939df09 SG |
28 | /* Do this here while it still has an effect */ |
29 | os_fd_restore(); | |
5c2859cd SG |
30 | if (state_uninit()) |
31 | os_exit(2); | |
32 | ||
61336833 SG |
33 | if (dm_uninit()) |
34 | os_exit(2); | |
35 | ||
7a9219c1 SG |
36 | /* This is considered normal termination for now */ |
37 | os_exit(0); | |
88bd0e9d SG |
38 | } |
39 | ||
4b0730d2 SG |
40 | /* delay x useconds */ |
41 | void __udelay(unsigned long usec) | |
42 | { | |
9723563a SG |
43 | struct sandbox_state *state = state_get_current(); |
44 | ||
45 | if (!state->skip_delays) | |
46 | os_usleep(usec); | |
4b0730d2 SG |
47 | } |
48 | ||
4b0730d2 SG |
49 | int cleanup_before_linux(void) |
50 | { | |
51 | return 0; | |
52 | } | |
53 | ||
29748515 SG |
54 | int cleanup_before_linux_select(int flags) |
55 | { | |
56 | return 0; | |
57 | } | |
58 | ||
f7ae1ca3 PB |
59 | void *phys_to_virt(phys_addr_t paddr) |
60 | { | |
61 | return (void *)(gd->arch.ram_buf + paddr); | |
62 | } | |
63 | ||
64 | phys_addr_t virt_to_phys(void *vaddr) | |
65 | { | |
66 | return (phys_addr_t)((uint8_t *)vaddr - gd->arch.ram_buf); | |
67 | } | |
68 | ||
4b0730d2 SG |
69 | void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) |
70 | { | |
a7d9caec | 71 | #if defined(CONFIG_PCI) && !defined(CONFIG_SPL_BUILD) |
9569c406 SG |
72 | unsigned long plen = len; |
73 | void *ptr; | |
74 | ||
75 | map_dev = NULL; | |
76 | if (enable_pci_map && !pci_map_physmem(paddr, &len, &map_dev, &ptr)) { | |
77 | if (plen != len) { | |
78 | printf("%s: Warning: partial map at %x, wanted %lx, got %lx\n", | |
c6b89f31 | 79 | __func__, (uint)paddr, len, plen); |
9569c406 SG |
80 | } |
81 | map_len = len; | |
82 | return ptr; | |
83 | } | |
84 | #endif | |
85 | ||
f7ae1ca3 | 86 | return phys_to_virt(paddr); |
4b0730d2 SG |
87 | } |
88 | ||
9569c406 SG |
89 | void unmap_physmem(const void *vaddr, unsigned long flags) |
90 | { | |
91 | #ifdef CONFIG_PCI | |
92 | if (map_dev) { | |
93 | pci_unmap_physmem(vaddr, map_len, map_dev); | |
94 | map_dev = NULL; | |
95 | } | |
96 | #endif | |
97 | } | |
98 | ||
99 | void sandbox_set_enable_pci_map(int enable) | |
100 | { | |
101 | enable_pci_map = enable; | |
102 | } | |
103 | ||
66bd1cff | 104 | phys_addr_t map_to_sysmem(const void *ptr) |
781adb57 SG |
105 | { |
106 | return (u8 *)ptr - gd->arch.ram_buf; | |
107 | } | |
108 | ||
4b0730d2 SG |
109 | void flush_dcache_range(unsigned long start, unsigned long stop) |
110 | { | |
111 | } | |
b45122fd | 112 | |
0d1414bd BM |
113 | void invalidate_dcache_range(unsigned long start, unsigned long stop) |
114 | { | |
115 | } | |
116 | ||
b45122fd SG |
117 | int sandbox_read_fdt_from_file(void) |
118 | { | |
119 | struct sandbox_state *state = state_get_current(); | |
120 | const char *fname = state->fdt_fname; | |
121 | void *blob; | |
122 | loff_t size; | |
123 | int err; | |
124 | int fd; | |
125 | ||
126 | blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0); | |
127 | if (!state->fdt_fname) { | |
128 | err = fdt_create_empty_tree(blob, 256); | |
129 | if (!err) | |
130 | goto done; | |
131 | printf("Unable to create empty FDT: %s\n", fdt_strerror(err)); | |
132 | return -EINVAL; | |
133 | } | |
134 | ||
135 | err = os_get_filesize(fname, &size); | |
136 | if (err < 0) { | |
137 | printf("Failed to file FDT file '%s'\n", fname); | |
138 | return err; | |
139 | } | |
140 | fd = os_open(fname, OS_O_RDONLY); | |
141 | if (fd < 0) { | |
142 | printf("Failed to open FDT file '%s'\n", fname); | |
143 | return -EACCES; | |
144 | } | |
145 | if (os_read(fd, blob, size) != size) { | |
146 | os_close(fd); | |
147 | return -EIO; | |
148 | } | |
149 | os_close(fd); | |
150 | ||
151 | done: | |
152 | gd->fdt_blob = blob; | |
153 | ||
154 | return 0; | |
155 | } | |
c87dc38d SG |
156 | |
157 | ulong timer_get_boot_us(void) | |
158 | { | |
159 | static uint64_t base_count; | |
160 | uint64_t count = os_get_nsec(); | |
161 | ||
162 | if (!base_count) | |
163 | base_count = count; | |
164 | ||
165 | return (count - base_count) / 1000; | |
166 | } |