]>
git.ipfire.org Git - people/ms/u-boot.git/blob - arch/sandbox/cpu/cpu.c
2 * Copyright (c) 2011 The Chromium OS Authors.
3 * SPDX-License-Identifier: GPL-2.0+
10 #include <asm/state.h>
12 DECLARE_GLOBAL_DATA_PTR
;
14 /* Enable access to PCI memory with map_sysmem() */
15 static bool enable_pci_map
;
18 /* Last device that was mapped into memory, and length of mapping */
19 static struct udevice
*map_dev
;
20 unsigned long map_len
;
23 void sandbox_exit(void)
25 /* Do this here while it still has an effect */
33 /* This is considered normal termination for now */
37 /* delay x useconds */
38 void __udelay(unsigned long usec
)
40 struct sandbox_state
*state
= state_get_current();
42 if (!state
->skip_delays
)
46 int cleanup_before_linux(void)
51 int cleanup_before_linux_select(int flags
)
56 void *map_physmem(phys_addr_t paddr
, unsigned long len
, unsigned long flags
)
59 unsigned long plen
= len
;
63 if (enable_pci_map
&& !pci_map_physmem(paddr
, &len
, &map_dev
, &ptr
)) {
65 printf("%s: Warning: partial map at %x, wanted %lx, got %lx\n",
66 __func__
, paddr
, len
, plen
);
73 return (void *)(gd
->arch
.ram_buf
+ paddr
);
76 void unmap_physmem(const void *vaddr
, unsigned long flags
)
80 pci_unmap_physmem(vaddr
, map_len
, map_dev
);
86 void sandbox_set_enable_pci_map(int enable
)
88 enable_pci_map
= enable
;
91 phys_addr_t
map_to_sysmem(const void *ptr
)
93 return (u8
*)ptr
- gd
->arch
.ram_buf
;
96 void flush_dcache_range(unsigned long start
, unsigned long stop
)
100 int sandbox_read_fdt_from_file(void)
102 struct sandbox_state
*state
= state_get_current();
103 const char *fname
= state
->fdt_fname
;
109 blob
= map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR
, 0);
110 if (!state
->fdt_fname
) {
111 err
= fdt_create_empty_tree(blob
, 256);
114 printf("Unable to create empty FDT: %s\n", fdt_strerror(err
));
118 err
= os_get_filesize(fname
, &size
);
120 printf("Failed to file FDT file '%s'\n", fname
);
123 fd
= os_open(fname
, OS_O_RDONLY
);
125 printf("Failed to open FDT file '%s'\n", fname
);
128 if (os_read(fd
, blob
, size
) != size
) {