1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Sandbox adder for p2sb testing
4 *
5 * Copyright 2019 Google LLC
6 */
7
8 #define LOG_CATEGORY UCLASS_MISC
9
10 #include <axi.h>
11 #include <dm.h>
12 #include <misc.h>
13 #include <p2sb.h>
14 #include <asm/io.h>
15
16 struct sandbox_adder_priv {
17 ulong base;
18 };
19
sandbox_adder_read(struct udevice * dev,ulong address,void * data,enum axi_size_t size)20 int sandbox_adder_read(struct udevice *dev, ulong address, void *data,
21 enum axi_size_t size)
22 {
23 struct p2sb_child_plat *pplat = dev_get_parent_plat(dev);
24 u32 *val = data;
25
26 *val = pplat->pid << 24 | address;
27
28 return 0;
29 }
30
sandbox_adder_write(struct udevice * dev,ulong address,void * data,enum axi_size_t size)31 int sandbox_adder_write(struct udevice *dev, ulong address, void *data,
32 enum axi_size_t size)
33 {
34 return 0;
35 }
36
sandbox_adder_probe(struct udevice * dev)37 static int sandbox_adder_probe(struct udevice *dev)
38 {
39 return 0;
40 }
41
42 static struct axi_ops sandbox_adder_ops = {
43 .read = sandbox_adder_read,
44 .write = sandbox_adder_write,
45 };
46
47 static const struct udevice_id sandbox_adder_ids[] = {
48 { .compatible = "sandbox,adder" },
49 { }
50 };
51
52 U_BOOT_DRIVER(adder_sandbox) = {
53 .name = "sandbox_adder",
54 .id = UCLASS_AXI,
55 .of_match = sandbox_adder_ids,
56 .probe = sandbox_adder_probe,
57 .ops = &sandbox_adder_ops,
58 .priv_auto = sizeof(struct sandbox_adder_priv),
59 };
60