Commit | Line | Data |
---|---|---|
1ddd35be | 1 | #include <linux/err.h> |
198016e1 | 2 | #include <linux/module.h> |
bb07d751 | 3 | #include <linux/io.h> |
a2887546 | 4 | #include <linux/of.h> |
e57e4ab5 | 5 | #include <linux/of_address.h> |
a2887546 SG |
6 | #include <linux/slab.h> |
7 | #include <linux/sys_soc.h> | |
50f2de61 SG |
8 | |
9 | #include "hardware.h" | |
e7feaaa7 | 10 | #include "common.h" |
198016e1 SH |
11 | |
12 | unsigned int __mxc_cpu_type; | |
bfefdff8 SG |
13 | static unsigned int imx_soc_revision; |
14 | ||
198016e1 SH |
15 | void mxc_set_cpu_type(unsigned int type) |
16 | { | |
17 | __mxc_cpu_type = type; | |
18 | } | |
19 | ||
bfefdff8 SG |
20 | void imx_set_soc_revision(unsigned int rev) |
21 | { | |
22 | imx_soc_revision = rev; | |
23 | } | |
24 | ||
25 | unsigned int imx_get_soc_revision(void) | |
26 | { | |
27 | return imx_soc_revision; | |
28 | } | |
29 | ||
059e58f6 FE |
30 | void imx_print_silicon_rev(const char *cpu, int srev) |
31 | { | |
32 | if (srev == IMX_CHIP_REVISION_UNKNOWN) | |
33 | pr_info("CPU identified as %s, unknown revision\n", cpu); | |
34 | else | |
35 | pr_info("CPU identified as %s, silicon rev %d.%d\n", | |
36 | cpu, (srev >> 4) & 0xf, srev & 0xf); | |
37 | } | |
bb07d751 FE |
38 | |
39 | void __init imx_set_aips(void __iomem *base) | |
40 | { | |
41 | unsigned int reg; | |
42 | /* | |
43 | * Set all MPROTx to be non-bufferable, trusted for R/W, | |
44 | * not forced to user-mode. | |
45 | */ | |
c553138f JB |
46 | imx_writel(0x77777777, base + 0x0); |
47 | imx_writel(0x77777777, base + 0x4); | |
bb07d751 FE |
48 | |
49 | /* | |
50 | * Set all OPACRx to be non-bufferable, to not require | |
51 | * supervisor privilege level for access, allow for | |
52 | * write access and untrusted master access. | |
53 | */ | |
c553138f JB |
54 | imx_writel(0x0, base + 0x40); |
55 | imx_writel(0x0, base + 0x44); | |
56 | imx_writel(0x0, base + 0x48); | |
57 | imx_writel(0x0, base + 0x4C); | |
58 | reg = imx_readl(base + 0x50) & 0x00FFFFFF; | |
59 | imx_writel(reg, base + 0x50); | |
bb07d751 | 60 | } |
a2887546 | 61 | |
e57e4ab5 ST |
62 | void __init imx_aips_allow_unprivileged_access( |
63 | const char *compat) | |
64 | { | |
65 | void __iomem *aips_base_addr; | |
66 | struct device_node *np; | |
67 | ||
68 | for_each_compatible_node(np, NULL, compat) { | |
69 | aips_base_addr = of_iomap(np, 0); | |
70 | imx_set_aips(aips_base_addr); | |
71 | } | |
72 | } | |
73 | ||
a2887546 SG |
74 | struct device * __init imx_soc_device_init(void) |
75 | { | |
76 | struct soc_device_attribute *soc_dev_attr; | |
77 | struct soc_device *soc_dev; | |
78 | struct device_node *root; | |
79 | const char *soc_id; | |
80 | int ret; | |
81 | ||
82 | soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); | |
83 | if (!soc_dev_attr) | |
84 | return NULL; | |
85 | ||
86 | soc_dev_attr->family = "Freescale i.MX"; | |
87 | ||
88 | root = of_find_node_by_path("/"); | |
89 | ret = of_property_read_string(root, "model", &soc_dev_attr->machine); | |
90 | of_node_put(root); | |
91 | if (ret) | |
92 | goto free_soc; | |
93 | ||
94 | switch (__mxc_cpu_type) { | |
95 | case MXC_CPU_MX1: | |
96 | soc_id = "i.MX1"; | |
97 | break; | |
98 | case MXC_CPU_MX21: | |
99 | soc_id = "i.MX21"; | |
100 | break; | |
101 | case MXC_CPU_MX25: | |
102 | soc_id = "i.MX25"; | |
103 | break; | |
104 | case MXC_CPU_MX27: | |
105 | soc_id = "i.MX27"; | |
106 | break; | |
107 | case MXC_CPU_MX31: | |
108 | soc_id = "i.MX31"; | |
109 | break; | |
110 | case MXC_CPU_MX35: | |
111 | soc_id = "i.MX35"; | |
112 | break; | |
113 | case MXC_CPU_MX51: | |
114 | soc_id = "i.MX51"; | |
115 | break; | |
116 | case MXC_CPU_MX53: | |
117 | soc_id = "i.MX53"; | |
118 | break; | |
119 | case MXC_CPU_IMX6SL: | |
120 | soc_id = "i.MX6SL"; | |
121 | break; | |
122 | case MXC_CPU_IMX6DL: | |
123 | soc_id = "i.MX6DL"; | |
124 | break; | |
d9654dce SG |
125 | case MXC_CPU_IMX6SX: |
126 | soc_id = "i.MX6SX"; | |
127 | break; | |
a2887546 SG |
128 | case MXC_CPU_IMX6Q: |
129 | soc_id = "i.MX6Q"; | |
130 | break; | |
022d0716 FL |
131 | case MXC_CPU_IMX6UL: |
132 | soc_id = "i.MX6UL"; | |
133 | break; | |
5739b919 AH |
134 | case MXC_CPU_IMX7D: |
135 | soc_id = "i.MX7D"; | |
136 | break; | |
a2887546 SG |
137 | default: |
138 | soc_id = "Unknown"; | |
139 | } | |
140 | soc_dev_attr->soc_id = soc_id; | |
141 | ||
142 | soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d.%d", | |
143 | (imx_soc_revision >> 4) & 0xf, | |
144 | imx_soc_revision & 0xf); | |
145 | if (!soc_dev_attr->revision) | |
146 | goto free_soc; | |
147 | ||
148 | soc_dev = soc_device_register(soc_dev_attr); | |
149 | if (IS_ERR(soc_dev)) | |
150 | goto free_rev; | |
151 | ||
152 | return soc_device_to_device(soc_dev); | |
153 | ||
154 | free_rev: | |
155 | kfree(soc_dev_attr->revision); | |
156 | free_soc: | |
157 | kfree(soc_dev_attr); | |
158 | return NULL; | |
159 | } |