141 lines
2.6 KiB
C
141 lines
2.6 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#define DEBUG
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#include <common.h>
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#include <errno.h>
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#include <libfdt.h>
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#include <os.h>
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#include <asm/io.h>
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#include <asm/state.h>
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#include <dm/root.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* Enable access to PCI memory with map_sysmem() */
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static bool enable_pci_map;
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#ifdef CONFIG_PCI
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/* Last device that was mapped into memory, and length of mapping */
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static struct udevice *map_dev;
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unsigned long map_len;
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#endif
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void sandbox_exit(void)
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{
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/* Do this here while it still has an effect */
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os_fd_restore();
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if (state_uninit())
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os_exit(2);
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if (dm_uninit())
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os_exit(2);
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/* This is considered normal termination for now */
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os_exit(0);
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}
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/* delay x useconds */
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void __udelay(unsigned long usec)
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{
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struct sandbox_state *state = state_get_current();
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if (!state->skip_delays)
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os_usleep(usec);
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}
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int cleanup_before_linux(void)
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{
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return 0;
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}
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int cleanup_before_linux_select(int flags)
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{
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return 0;
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}
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void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
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{
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#if defined(CONFIG_PCI) && !defined(CONFIG_SPL_BUILD)
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unsigned long plen = len;
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void *ptr;
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map_dev = NULL;
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if (enable_pci_map && !pci_map_physmem(paddr, &len, &map_dev, &ptr)) {
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if (plen != len) {
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printf("%s: Warning: partial map at %x, wanted %lx, got %lx\n",
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__func__, paddr, len, plen);
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}
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map_len = len;
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return ptr;
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}
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#endif
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return (void *)(gd->arch.ram_buf + paddr);
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}
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void unmap_physmem(const void *vaddr, unsigned long flags)
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{
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#ifdef CONFIG_PCI
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if (map_dev) {
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pci_unmap_physmem(vaddr, map_len, map_dev);
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map_dev = NULL;
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}
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#endif
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}
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void sandbox_set_enable_pci_map(int enable)
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{
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enable_pci_map = enable;
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}
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phys_addr_t map_to_sysmem(const void *ptr)
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{
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return (u8 *)ptr - gd->arch.ram_buf;
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}
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void flush_dcache_range(unsigned long start, unsigned long stop)
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{
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}
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int sandbox_read_fdt_from_file(void)
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{
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struct sandbox_state *state = state_get_current();
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const char *fname = state->fdt_fname;
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void *blob;
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loff_t size;
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int err;
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int fd;
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blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
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if (!state->fdt_fname) {
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err = fdt_create_empty_tree(blob, 256);
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if (!err)
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goto done;
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printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
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return -EINVAL;
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}
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err = os_get_filesize(fname, &size);
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if (err < 0) {
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printf("Failed to file FDT file '%s'\n", fname);
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return err;
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}
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fd = os_open(fname, OS_O_RDONLY);
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if (fd < 0) {
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printf("Failed to open FDT file '%s'\n", fname);
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return -EACCES;
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}
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if (os_read(fd, blob, size) != size) {
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os_close(fd);
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return -EIO;
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}
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os_close(fd);
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done:
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gd->fdt_blob = blob;
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return 0;
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}
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