ubispl: add support for loading volumes by name
[oweals/u-boot.git] / lib / addr_map.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright 2008 Freescale Semiconductor, Inc.
4  */
5
6 #include <common.h>
7 #include <addr_map.h>
8
9 static struct {
10         phys_addr_t paddr;
11         phys_size_t size;
12         unsigned long vaddr;
13 } address_map[CONFIG_SYS_NUM_ADDR_MAP];
14
15 phys_addr_t addrmap_virt_to_phys(void * vaddr)
16 {
17         int i;
18
19         for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
20                 u64 base, upper, addr;
21
22                 if (address_map[i].size == 0)
23                         continue;
24
25                 addr = (u64)((u32)vaddr);
26                 base = (u64)(address_map[i].vaddr);
27                 upper = (u64)(address_map[i].size) + base - 1;
28
29                 if (addr >= base && addr <= upper) {
30                         return addr - address_map[i].vaddr + address_map[i].paddr;
31                 }
32         }
33
34         return (phys_addr_t)(~0);
35 }
36
37 void *addrmap_phys_to_virt(phys_addr_t paddr)
38 {
39         int i;
40
41         for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
42                 phys_addr_t base, upper;
43
44                 if (address_map[i].size == 0)
45                         continue;
46
47                 base = address_map[i].paddr;
48                 upper = address_map[i].size + base - 1;
49
50                 if (paddr >= base && paddr <= upper) {
51                         phys_addr_t offset;
52
53                         offset = address_map[i].paddr - address_map[i].vaddr;
54
55                         return (void *)(unsigned long)(paddr - offset);
56                 }
57         }
58
59         return (void *)(~0);
60 }
61
62 void addrmap_set_entry(unsigned long vaddr, phys_addr_t paddr,
63                         phys_size_t size, int idx)
64 {
65         if (idx > CONFIG_SYS_NUM_ADDR_MAP)
66                 return;
67
68         address_map[idx].vaddr = vaddr;
69         address_map[idx].paddr = paddr;
70         address_map[idx].size  = size;
71 }