1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2014 Freescale Semiconductor, Inc.
4 */
5
6 #include <common.h>
7 #include <linux/libfdt.h>
8 #include <fdt_support.h>
9 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 || CONFIG_SYS_FSL_SEC_COMPAT >= 4
10 #include <fsl_sec.h>
11 #endif
12
13 /*
14 * update crypto node properties to a specified revision of the SEC
15 * called with sec_rev == 0 if not on an E processor
16 */
17 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
fdt_fixup_crypto_node(void * blob,int sec_rev)18 void fdt_fixup_crypto_node(void *blob, int sec_rev)
19 {
20 static const struct sec_rev_prop {
21 u32 sec_rev;
22 u32 num_channels;
23 u32 channel_fifo_len;
24 u32 exec_units_mask;
25 u32 descriptor_types_mask;
26 } sec_rev_prop_list[] = {
27 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
28 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
29 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
30 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
31 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
32 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
33 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
34 };
35 static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
36 sizeof("fsl,secX.Y")];
37 int crypto_node, sec_idx, err;
38 char *p;
39 u32 val;
40
41 /* locate crypto node based on lowest common compatible */
42 crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
43 if (crypto_node == -FDT_ERR_NOTFOUND)
44 return;
45
46 /* delete it if not on an E-processor */
47 if (crypto_node > 0 && !sec_rev) {
48 fdt_del_node(blob, crypto_node);
49 return;
50 }
51
52 /* else we got called for possible uprev */
53 for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
54 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
55 break;
56
57 if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
58 puts("warning: unknown SEC revision number\n");
59 return;
60 }
61
62 err = fdt_setprop_u32(blob, crypto_node, "fsl,num-channels",
63 sec_rev_prop_list[sec_idx].num_channels);
64 if (err < 0)
65 printf("WARNING: could not set crypto property: %s\n",
66 fdt_strerror(err));
67
68 err = fdt_setprop_u32(blob, crypto_node, "fsl,descriptor-types-mask",
69 sec_rev_prop_list[sec_idx].descriptor_types_mask);
70 if (err < 0)
71 printf("WARNING: could not set crypto property: %s\n",
72 fdt_strerror(err));
73
74 err = fdt_setprop_u32(blob, crypto_node, "fsl,exec-units-mask",
75 sec_rev_prop_list[sec_idx].exec_units_mask);
76 if (err < 0)
77 printf("WARNING: could not set crypto property: %s\n",
78 fdt_strerror(err));
79
80 err = fdt_setprop_u32(blob, crypto_node, "fsl,channel-fifo-len",
81 sec_rev_prop_list[sec_idx].channel_fifo_len);
82 if (err < 0)
83 printf("WARNING: could not set crypto property: %s\n",
84 fdt_strerror(err));
85
86 val = 0;
87 while (sec_idx >= 0) {
88 p = compat_strlist + val;
89 val += sprintf(p, "fsl,sec%d.%d",
90 (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
91 sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
92 sec_idx--;
93 }
94 err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist,
95 val);
96 if (err < 0)
97 printf("WARNING: could not set crypto property: %s\n",
98 fdt_strerror(err));
99 }
100 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4 /* SEC4 */
caam_get_era(void)101 static u8 caam_get_era(void)
102 {
103 static const struct {
104 u16 ip_id;
105 u8 maj_rev;
106 u8 era;
107 } caam_eras[] = {
108 {0x0A10, 1, 1},
109 {0x0A10, 2, 2},
110 {0x0A12, 1, 3},
111 {0x0A14, 1, 3},
112 {0x0A14, 2, 4},
113 {0x0A16, 1, 4},
114 {0x0A10, 3, 4},
115 {0x0A11, 1, 4},
116 {0x0A18, 1, 4},
117 {0x0A11, 2, 5},
118 {0x0A12, 2, 5},
119 {0x0A13, 1, 5},
120 {0x0A1C, 1, 5}
121 };
122
123 ccsr_sec_t __iomem *sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR;
124 u32 secvid_ms = sec_in32(&sec->secvid_ms);
125 u32 ccbvid = sec_in32(&sec->ccbvid);
126 u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >>
127 SEC_SECVID_MS_IPID_SHIFT;
128 u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >>
129 SEC_SECVID_MS_MAJ_REV_SHIFT;
130 u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT;
131
132 int i;
133
134 if (era) /* This is '0' prior to CAAM ERA-6 */
135 return era;
136
137 for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
138 if (caam_eras[i].ip_id == ip_id &&
139 caam_eras[i].maj_rev == maj_rev)
140 return caam_eras[i].era;
141
142 return 0;
143 }
144
fdt_fixup_crypto_era(void * blob,u32 era)145 static void fdt_fixup_crypto_era(void *blob, u32 era)
146 {
147 int err;
148 int crypto_node;
149
150 crypto_node = fdt_path_offset(blob, "crypto");
151 if (crypto_node < 0) {
152 printf("WARNING: Missing crypto node\n");
153 return;
154 }
155
156 err = fdt_setprop_u32(blob, crypto_node, "fsl,sec-era", era);
157 if (err < 0) {
158 printf("ERROR: could not set fsl,sec-era property: %s\n",
159 fdt_strerror(err));
160 }
161 }
162
fdt_fixup_crypto_node(void * blob,int sec_rev)163 void fdt_fixup_crypto_node(void *blob, int sec_rev)
164 {
165 u8 era;
166
167 if (!sec_rev) {
168 fdt_del_node_and_alias(blob, "crypto");
169 return;
170 }
171
172 /* Add SEC ERA information in compatible */
173 era = caam_get_era();
174 if (era) {
175 fdt_fixup_crypto_era(blob, era);
176 } else {
177 printf("WARNING: Unable to get ERA for CAAM rev: %d\n",
178 sec_rev);
179 }
180 }
181 #endif
182