1 /* 2 * Copyright 2014 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <linux/libfdt.h> 9 #include <fdt_support.h> 10 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 || CONFIG_SYS_FSL_SEC_COMPAT >= 4 11 #include <fsl_sec.h> 12 #endif 13 14 /* 15 * update crypto node properties to a specified revision of the SEC 16 * called with sec_rev == 0 if not on an E processor 17 */ 18 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */ 19 void fdt_fixup_crypto_node(void *blob, int sec_rev) 20 { 21 static const struct sec_rev_prop { 22 u32 sec_rev; 23 u32 num_channels; 24 u32 channel_fifo_len; 25 u32 exec_units_mask; 26 u32 descriptor_types_mask; 27 } sec_rev_prop_list[] = { 28 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */ 29 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */ 30 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */ 31 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */ 32 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */ 33 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */ 34 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */ 35 }; 36 static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) * 37 sizeof("fsl,secX.Y")]; 38 int crypto_node, sec_idx, err; 39 char *p; 40 u32 val; 41 42 /* locate crypto node based on lowest common compatible */ 43 crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0"); 44 if (crypto_node == -FDT_ERR_NOTFOUND) 45 return; 46 47 /* delete it if not on an E-processor */ 48 if (crypto_node > 0 && !sec_rev) { 49 fdt_del_node(blob, crypto_node); 50 return; 51 } 52 53 /* else we got called for possible uprev */ 54 for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++) 55 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev) 56 break; 57 58 if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) { 59 puts("warning: unknown SEC revision number\n"); 60 return; 61 } 62 63 err = fdt_setprop_u32(blob, crypto_node, "fsl,num-channels", 64 sec_rev_prop_list[sec_idx].num_channels); 65 if (err < 0) 66 printf("WARNING: could not set crypto property: %s\n", 67 fdt_strerror(err)); 68 69 err = fdt_setprop_u32(blob, crypto_node, "fsl,descriptor-types-mask", 70 sec_rev_prop_list[sec_idx].descriptor_types_mask); 71 if (err < 0) 72 printf("WARNING: could not set crypto property: %s\n", 73 fdt_strerror(err)); 74 75 err = fdt_setprop_u32(blob, crypto_node, "fsl,exec-units-mask", 76 sec_rev_prop_list[sec_idx].exec_units_mask); 77 if (err < 0) 78 printf("WARNING: could not set crypto property: %s\n", 79 fdt_strerror(err)); 80 81 err = fdt_setprop_u32(blob, crypto_node, "fsl,channel-fifo-len", 82 sec_rev_prop_list[sec_idx].channel_fifo_len); 83 if (err < 0) 84 printf("WARNING: could not set crypto property: %s\n", 85 fdt_strerror(err)); 86 87 val = 0; 88 while (sec_idx >= 0) { 89 p = compat_strlist + val; 90 val += sprintf(p, "fsl,sec%d.%d", 91 (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8, 92 sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1; 93 sec_idx--; 94 } 95 err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, 96 val); 97 if (err < 0) 98 printf("WARNING: could not set crypto property: %s\n", 99 fdt_strerror(err)); 100 } 101 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4 /* SEC4 */ 102 static u8 caam_get_era(void) 103 { 104 static const struct { 105 u16 ip_id; 106 u8 maj_rev; 107 u8 era; 108 } caam_eras[] = { 109 {0x0A10, 1, 1}, 110 {0x0A10, 2, 2}, 111 {0x0A12, 1, 3}, 112 {0x0A14, 1, 3}, 113 {0x0A14, 2, 4}, 114 {0x0A16, 1, 4}, 115 {0x0A10, 3, 4}, 116 {0x0A11, 1, 4}, 117 {0x0A18, 1, 4}, 118 {0x0A11, 2, 5}, 119 {0x0A12, 2, 5}, 120 {0x0A13, 1, 5}, 121 {0x0A1C, 1, 5} 122 }; 123 124 ccsr_sec_t __iomem *sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR; 125 u32 secvid_ms = sec_in32(&sec->secvid_ms); 126 u32 ccbvid = sec_in32(&sec->ccbvid); 127 u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >> 128 SEC_SECVID_MS_IPID_SHIFT; 129 u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >> 130 SEC_SECVID_MS_MAJ_REV_SHIFT; 131 u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT; 132 133 int i; 134 135 if (era) /* This is '0' prior to CAAM ERA-6 */ 136 return era; 137 138 for (i = 0; i < ARRAY_SIZE(caam_eras); i++) 139 if (caam_eras[i].ip_id == ip_id && 140 caam_eras[i].maj_rev == maj_rev) 141 return caam_eras[i].era; 142 143 return 0; 144 } 145 146 static void fdt_fixup_crypto_era(void *blob, u32 era) 147 { 148 int err; 149 int crypto_node; 150 151 crypto_node = fdt_path_offset(blob, "crypto"); 152 if (crypto_node < 0) { 153 printf("WARNING: Missing crypto node\n"); 154 return; 155 } 156 157 err = fdt_setprop_u32(blob, crypto_node, "fsl,sec-era", era); 158 if (err < 0) { 159 printf("ERROR: could not set fsl,sec-era property: %s\n", 160 fdt_strerror(err)); 161 } 162 } 163 164 void fdt_fixup_crypto_node(void *blob, int sec_rev) 165 { 166 u8 era; 167 168 if (!sec_rev) { 169 fdt_del_node_and_alias(blob, "crypto"); 170 return; 171 } 172 173 /* Add SEC ERA information in compatible */ 174 era = caam_get_era(); 175 if (era) { 176 fdt_fixup_crypto_era(blob, era); 177 } else { 178 printf("WARNING: Unable to get ERA for CAAM rev: %d\n", 179 sec_rev); 180 } 181 } 182 #endif 183