2 * Copyright (c) 2011 The Chromium OS Authors.
3 * SPDX-License-Identifier: GPL-2.0+
9 #include <linux/libfdt.h>
12 #include <asm/state.h>
15 DECLARE_GLOBAL_DATA_PTR;
17 /* Enable access to PCI memory with map_sysmem() */
18 static bool enable_pci_map;
21 /* Last device that was mapped into memory, and length of mapping */
22 static struct udevice *map_dev;
23 unsigned long map_len;
26 void sandbox_exit(void)
28 /* Do this here while it still has an effect */
36 /* This is considered normal termination for now */
40 /* delay x useconds */
41 void __udelay(unsigned long usec)
43 struct sandbox_state *state = state_get_current();
45 if (!state->skip_delays)
49 int cleanup_before_linux(void)
54 int cleanup_before_linux_select(int flags)
59 void *phys_to_virt(phys_addr_t paddr)
61 return (void *)(gd->arch.ram_buf + paddr);
64 phys_addr_t virt_to_phys(void *vaddr)
66 return (phys_addr_t)((uint8_t *)vaddr - gd->arch.ram_buf);
69 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
71 #if defined(CONFIG_PCI) && !defined(CONFIG_SPL_BUILD)
72 unsigned long plen = len;
76 if (enable_pci_map && !pci_map_physmem(paddr, &len, &map_dev, &ptr)) {
78 printf("%s: Warning: partial map at %x, wanted %lx, got %lx\n",
79 __func__, (uint)paddr, len, plen);
86 return phys_to_virt(paddr);
89 void unmap_physmem(const void *vaddr, unsigned long flags)
93 pci_unmap_physmem(vaddr, map_len, map_dev);
99 void sandbox_set_enable_pci_map(int enable)
101 enable_pci_map = enable;
104 phys_addr_t map_to_sysmem(const void *ptr)
106 return (u8 *)ptr - gd->arch.ram_buf;
109 void flush_dcache_range(unsigned long start, unsigned long stop)
113 void invalidate_dcache_range(unsigned long start, unsigned long stop)
117 int sandbox_read_fdt_from_file(void)
119 struct sandbox_state *state = state_get_current();
120 const char *fname = state->fdt_fname;
126 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
127 if (!state->fdt_fname) {
128 err = fdt_create_empty_tree(blob, 256);
131 printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
135 err = os_get_filesize(fname, &size);
137 printf("Failed to file FDT file '%s'\n", fname);
140 fd = os_open(fname, OS_O_RDONLY);
142 printf("Failed to open FDT file '%s'\n", fname);
145 if (os_read(fd, blob, size) != size) {
157 ulong timer_get_boot_us(void)
159 static uint64_t base_count;
160 uint64_t count = os_get_nsec();
165 return (count - base_count) / 1000;