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 */ 18void 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/** 102 * caam_get_era() - fetch the CAAM's era 103 * 104 * The SEC module povides an "Era" which can be used to differentiate 105 * between different revisions. 106 * 107 * Return: era of the SEC. 108 */ 109u8 caam_get_era(void) 110{ 111 static const struct { 112 u16 ip_id; 113 u8 maj_rev; 114 u8 era; 115 } caam_eras[] = { 116 {0x0A10, 1, 1}, 117 {0x0A10, 2, 2}, 118 {0x0A12, 1, 3}, 119 {0x0A14, 1, 3}, 120 {0x0A14, 2, 4}, 121 {0x0A16, 1, 4}, 122 {0x0A10, 3, 4}, 123 {0x0A11, 1, 4}, 124 {0x0A18, 1, 4}, 125 {0x0A11, 2, 5}, 126 {0x0A12, 2, 5}, 127 {0x0A13, 1, 5}, 128 {0x0A1C, 1, 5} 129 }; 130 131 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; 139 140 int i; 141 142 if (era) /* This is '0' prior to CAAM ERA-6 */ 143 return era; 144 145 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; 149 150 return 0; 151} 152 153static void fdt_fixup_crypto_era(void *blob, u32 era) 154{ 155 int err; 156 int crypto_node; 157 158 crypto_node = fdt_path_offset(blob, "crypto"); 159 if (crypto_node < 0) { 160 printf("WARNING: Missing crypto node\n"); 161 return; 162 } 163 164 err = fdt_setprop_u32(blob, crypto_node, "fsl,sec-era", era); 165 if (err < 0) { 166 printf("ERROR: could not set fsl,sec-era property: %s\n", 167 fdt_strerror(err)); 168 } 169} 170 171void fdt_fixup_crypto_node(void *blob, int sec_rev) 172{ 173 u8 era; 174 175 if (!sec_rev) { 176 fdt_del_node_and_alias(blob, "crypto"); 177 return; 178 } 179 180 /* Add SEC ERA information in compatible */ 181 era = caam_get_era(); 182 if (era) { 183 fdt_fixup_crypto_era(blob, era); 184 } else { 185 printf("WARNING: Unable to get ERA for CAAM rev: %d\n", 186 sec_rev); 187 } 188} 189#endif 190