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 */ 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 */ 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 } 144 145 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 } 162 163 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