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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright 2019 NXP.
4 */
5
6#include <dt-bindings/firmware/imx/rsrc.h>
7#include <linux/firmware/imx/sci.h>
8#include <linux/slab.h>
9#include <linux/sys_soc.h>
10#include <linux/platform_device.h>
11#include <linux/of.h>
12
13static struct imx_sc_ipc *imx_sc_soc_ipc_handle;
14
15struct imx_sc_msg_misc_get_soc_id {
16 struct imx_sc_rpc_msg hdr;
17 union {
18 struct {
19 u32 control;
20 u16 resource;
21 } __packed req;
22 struct {
23 u32 id;
24 } resp;
25 } data;
26} __packed __aligned(4);
27
28struct imx_sc_msg_misc_get_soc_uid {
29 struct imx_sc_rpc_msg hdr;
30 u32 uid_low;
31 u32 uid_high;
32} __packed;
33
34static int imx_scu_soc_uid(u64 *soc_uid)
35{
36 struct imx_sc_msg_misc_get_soc_uid msg;
37 struct imx_sc_rpc_msg *hdr = &msg.hdr;
38 int ret;
39
40 hdr->ver = IMX_SC_RPC_VERSION;
41 hdr->svc = IMX_SC_RPC_SVC_MISC;
42 hdr->func = IMX_SC_MISC_FUNC_UNIQUE_ID;
43 hdr->size = 1;
44
45 ret = imx_scu_call_rpc(imx_sc_soc_ipc_handle, &msg, true);
46 if (ret) {
47 pr_err("%s: get soc uid failed, ret %d\n", __func__, ret);
48 return ret;
49 }
50
51 *soc_uid = msg.uid_high;
52 *soc_uid <<= 32;
53 *soc_uid |= msg.uid_low;
54
55 return 0;
56}
57
58static int imx_scu_soc_id(void)
59{
60 struct imx_sc_msg_misc_get_soc_id msg;
61 struct imx_sc_rpc_msg *hdr = &msg.hdr;
62 int ret;
63
64 hdr->ver = IMX_SC_RPC_VERSION;
65 hdr->svc = IMX_SC_RPC_SVC_MISC;
66 hdr->func = IMX_SC_MISC_FUNC_GET_CONTROL;
67 hdr->size = 3;
68
69 msg.data.req.control = IMX_SC_C_ID;
70 msg.data.req.resource = IMX_SC_R_SYSTEM;
71
72 ret = imx_scu_call_rpc(imx_sc_soc_ipc_handle, &msg, true);
73 if (ret) {
74 pr_err("%s: get soc info failed, ret %d\n", __func__, ret);
75 return ret;
76 }
77
78 return msg.data.resp.id;
79}
80
81static const char *imx_scu_soc_name(u32 id)
82{
83 switch (id) {
84 case 0x1:
85 return "i.MX8QM";
86 case 0x2:
87 return "i.MX8QXP";
88 case 0xe:
89 return "i.MX8DXL";
90 default:
91 break;
92 }
93
94 return "NULL";
95}
96
97int imx_scu_soc_init(struct device *dev)
98{
99 struct soc_device_attribute *soc_dev_attr;
100 struct soc_device *soc_dev;
101 int id, ret;
102 u64 uid = 0;
103 u32 val;
104
105 ret = imx_scu_get_handle(&imx_sc_soc_ipc_handle);
106 if (ret)
107 return ret;
108
109 soc_dev_attr = devm_kzalloc(dev, sizeof(*soc_dev_attr),
110 GFP_KERNEL);
111 if (!soc_dev_attr)
112 return -ENOMEM;
113
114 soc_dev_attr->family = "Freescale i.MX";
115
116 ret = of_property_read_string(of_root,
117 "model",
118 &soc_dev_attr->machine);
119 if (ret)
120 return ret;
121
122 id = imx_scu_soc_id();
123 if (id < 0)
124 return -EINVAL;
125
126 ret = imx_scu_soc_uid(&uid);
127 if (ret < 0)
128 return -EINVAL;
129
130 /* format soc_id value passed from SCU firmware */
131 val = id & 0x1f;
132 soc_dev_attr->soc_id = imx_scu_soc_name(val);
133
134 /* format revision value passed from SCU firmware */
135 val = (id >> 5) & 0xf;
136 val = (((val >> 2) + 1) << 4) | (val & 0x3);
137 soc_dev_attr->revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
138 (val >> 4) & 0xf, val & 0xf);
139 if (!soc_dev_attr->revision)
140 return -ENOMEM;
141
142 soc_dev_attr->serial_number = devm_kasprintf(dev, GFP_KERNEL,
143 "%016llX", uid);
144 if (!soc_dev_attr->serial_number)
145 return -ENOMEM;
146
147 soc_dev = soc_device_register(soc_dev_attr);
148 if (IS_ERR(soc_dev))
149 return PTR_ERR(soc_dev);
150
151 return 0;
152}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright 2019 NXP.
4 */
5
6#include <dt-bindings/firmware/imx/rsrc.h>
7#include <linux/firmware/imx/sci.h>
8#include <linux/slab.h>
9#include <linux/sys_soc.h>
10#include <linux/platform_device.h>
11#include <linux/of.h>
12
13static struct imx_sc_ipc *imx_sc_soc_ipc_handle;
14
15struct imx_sc_msg_misc_get_soc_id {
16 struct imx_sc_rpc_msg hdr;
17 union {
18 struct {
19 u32 control;
20 u16 resource;
21 } __packed req;
22 struct {
23 u32 id;
24 } resp;
25 } data;
26} __packed __aligned(4);
27
28struct imx_sc_msg_misc_get_soc_uid {
29 struct imx_sc_rpc_msg hdr;
30 u32 uid_low;
31 u32 uid_high;
32} __packed;
33
34static int imx_scu_soc_uid(u64 *soc_uid)
35{
36 struct imx_sc_msg_misc_get_soc_uid msg;
37 struct imx_sc_rpc_msg *hdr = &msg.hdr;
38 int ret;
39
40 hdr->ver = IMX_SC_RPC_VERSION;
41 hdr->svc = IMX_SC_RPC_SVC_MISC;
42 hdr->func = IMX_SC_MISC_FUNC_UNIQUE_ID;
43 hdr->size = 1;
44
45 ret = imx_scu_call_rpc(imx_sc_soc_ipc_handle, &msg, true);
46 if (ret) {
47 pr_err("%s: get soc uid failed, ret %d\n", __func__, ret);
48 return ret;
49 }
50
51 *soc_uid = msg.uid_high;
52 *soc_uid <<= 32;
53 *soc_uid |= msg.uid_low;
54
55 return 0;
56}
57
58static int imx_scu_soc_id(void)
59{
60 struct imx_sc_msg_misc_get_soc_id msg;
61 struct imx_sc_rpc_msg *hdr = &msg.hdr;
62 int ret;
63
64 hdr->ver = IMX_SC_RPC_VERSION;
65 hdr->svc = IMX_SC_RPC_SVC_MISC;
66 hdr->func = IMX_SC_MISC_FUNC_GET_CONTROL;
67 hdr->size = 3;
68
69 msg.data.req.control = IMX_SC_C_ID;
70 msg.data.req.resource = IMX_SC_R_SYSTEM;
71
72 ret = imx_scu_call_rpc(imx_sc_soc_ipc_handle, &msg, true);
73 if (ret) {
74 pr_err("%s: get soc info failed, ret %d\n", __func__, ret);
75 return ret;
76 }
77
78 return msg.data.resp.id;
79}
80
81static const char *imx_scu_soc_name(u32 id)
82{
83 switch (id) {
84 case 0x1:
85 return "i.MX8QM";
86 case 0x2:
87 return "i.MX8QXP";
88 case 0xe:
89 return "i.MX8DXL";
90 default:
91 break;
92 }
93
94 return "NULL";
95}
96
97int imx_scu_soc_init(struct device *dev)
98{
99 struct soc_device_attribute *soc_dev_attr;
100 struct soc_device *soc_dev;
101 int id, ret;
102 u64 uid = 0;
103 u32 val;
104
105 ret = imx_scu_get_handle(&imx_sc_soc_ipc_handle);
106 if (ret)
107 return ret;
108
109 soc_dev_attr = devm_kzalloc(dev, sizeof(*soc_dev_attr),
110 GFP_KERNEL);
111 if (!soc_dev_attr)
112 return -ENOMEM;
113
114 soc_dev_attr->family = "Freescale i.MX";
115
116 ret = of_property_read_string(of_root,
117 "model",
118 &soc_dev_attr->machine);
119 if (ret)
120 return ret;
121
122 id = imx_scu_soc_id();
123 if (id < 0)
124 return -EINVAL;
125
126 ret = imx_scu_soc_uid(&uid);
127 if (ret < 0)
128 return -EINVAL;
129
130 /* format soc_id value passed from SCU firmware */
131 val = id & 0x1f;
132 soc_dev_attr->soc_id = imx_scu_soc_name(val);
133
134 /* format revision value passed from SCU firmware */
135 val = (id >> 5) & 0xf;
136 val = (((val >> 2) + 1) << 4) | (val & 0x3);
137 soc_dev_attr->revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
138 (val >> 4) & 0xf, val & 0xf);
139 if (!soc_dev_attr->revision)
140 return -ENOMEM;
141
142 soc_dev_attr->serial_number = devm_kasprintf(dev, GFP_KERNEL,
143 "%016llX", uid);
144 if (!soc_dev_attr->serial_number)
145 return -ENOMEM;
146
147 soc_dev = soc_device_register(soc_dev_attr);
148 if (IS_ERR(soc_dev))
149 return PTR_ERR(soc_dev);
150
151 return 0;
152}