mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-04 10:30:32 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
166 lines
3 KiB
C
166 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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*/
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#define DEBUG
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <linux/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 *phys_to_virt(phys_addr_t paddr)
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{
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return (void *)(gd->arch.ram_buf + paddr);
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}
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phys_addr_t virt_to_phys(void *vaddr)
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{
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return (phys_addr_t)((uint8_t *)vaddr - gd->arch.ram_buf);
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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__, (uint)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 phys_to_virt(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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void invalidate_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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ulong timer_get_boot_us(void)
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{
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static uint64_t base_count;
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uint64_t count = os_get_nsec();
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if (!base_count)
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base_count = count;
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return (count - base_count) / 1000;
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}
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