1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2014 Freescale Semiconductor, Inc.
7 #include <linux/libfdt.h>
8 #include <fdt_support.h>
9 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 || CONFIG_SYS_FSL_SEC_COMPAT >= 4
14 * update crypto node properties to a specified revision of the SEC
15 * called with sec_rev == 0 if not on an E processor
17 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
18 void fdt_fixup_crypto_node(void *blob, int sec_rev)
20 static const struct sec_rev_prop {
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 */
35 static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
36 sizeof("fsl,secX.Y")];
37 int crypto_node, sec_idx, err;
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)
46 /* delete it if not on an E-processor */
47 if (crypto_node > 0 && !sec_rev) {
48 fdt_del_node(blob, crypto_node);
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)
57 if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
58 puts("warning: unknown SEC revision number\n");
62 err = fdt_setprop_u32(blob, crypto_node, "fsl,num-channels",
63 sec_rev_prop_list[sec_idx].num_channels);
65 printf("WARNING: could not set crypto property: %s\n",
68 err = fdt_setprop_u32(blob, crypto_node, "fsl,descriptor-types-mask",
69 sec_rev_prop_list[sec_idx].descriptor_types_mask);
71 printf("WARNING: could not set crypto property: %s\n",
74 err = fdt_setprop_u32(blob, crypto_node, "fsl,exec-units-mask",
75 sec_rev_prop_list[sec_idx].exec_units_mask);
77 printf("WARNING: could not set crypto property: %s\n",
80 err = fdt_setprop_u32(blob, crypto_node, "fsl,channel-fifo-len",
81 sec_rev_prop_list[sec_idx].channel_fifo_len);
83 printf("WARNING: could not set crypto property: %s\n",
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;
94 err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist,
97 printf("WARNING: could not set crypto property: %s\n",
100 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4 /* SEC4 */
102 * caam_get_era() - fetch the CAAM's era
104 * The SEC module povides an "Era" which can be used to differentiate
105 * between different revisions.
107 * Return: era of the SEC.
109 u8 caam_get_era(void)
111 static const struct {
131 ccsr_sec_t __iomem *sec = (void __iomem *)CFG_SYS_FSL_SEC_ADDR;
132 u32 secvid_ms = sec_in32(&sec->secvid_ms);
133 u32 ccbvid = sec_in32(&sec->ccbvid);
134 u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >>
135 SEC_SECVID_MS_IPID_SHIFT;
136 u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >>
137 SEC_SECVID_MS_MAJ_REV_SHIFT;
138 u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT;
142 if (era) /* This is '0' prior to CAAM ERA-6 */
145 for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
146 if (caam_eras[i].ip_id == ip_id &&
147 caam_eras[i].maj_rev == maj_rev)
148 return caam_eras[i].era;
153 static void fdt_fixup_crypto_era(void *blob, u32 era)
158 crypto_node = fdt_path_offset(blob, "crypto");
159 if (crypto_node < 0) {
160 printf("WARNING: Missing crypto node\n");
164 err = fdt_setprop_u32(blob, crypto_node, "fsl,sec-era", era);
166 printf("ERROR: could not set fsl,sec-era property: %s\n",
171 void fdt_fixup_crypto_node(void *blob, int sec_rev)
176 fdt_del_node_and_alias(blob, "crypto");
180 /* Add SEC ERA information in compatible */
181 era = caam_get_era();
183 fdt_fixup_crypto_era(blob, era);
185 printf("WARNING: Unable to get ERA for CAAM rev: %d\n",