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 <common.h>
11 #include <axi.h>
12 #include <dm.h>
13 #include <misc.h>
14 #include <p2sb.h>
15 #include <asm/io.h>
16
17 struct sandbox_adder_priv {
18 ulong base;
19 };
20
sandbox_adder_read(struct udevice * dev,ulong address,void * data,enum axi_size_t size)21 int sandbox_adder_read(struct udevice *dev, ulong address, void *data,
22 enum axi_size_t size)
23 {
24 struct p2sb_child_plat *pplat = dev_get_parent_plat(dev);
25 u32 *val = data;
26
27 *val = pplat->pid << 24 | address;
28
29 return 0;
30 }
31
sandbox_adder_write(struct udevice * dev,ulong address,void * data,enum axi_size_t size)32 int sandbox_adder_write(struct udevice *dev, ulong address, void *data,
33 enum axi_size_t size)
34 {
35 return 0;
36 }
37
sandbox_adder_probe(struct udevice * dev)38 static int sandbox_adder_probe(struct udevice *dev)
39 {
40 return 0;
41 }
42
43 static struct axi_ops sandbox_adder_ops = {
44 .read = sandbox_adder_read,
45 .write = sandbox_adder_write,
46 };
47
48 static const struct udevice_id sandbox_adder_ids[] = {
49 { .compatible = "sandbox,adder" },
50 { }
51 };
52
53 U_BOOT_DRIVER(adder_sandbox) = {
54 .name = "sandbox_adder",
55 .id = UCLASS_AXI,
56 .of_match = sandbox_adder_ids,
57 .probe = sandbox_adder_probe,
58 .ops = &sandbox_adder_ops,
59 .priv_auto = sizeof(struct sandbox_adder_priv),
60 };
61