1 /* 2 * Copyright 2009-2010 Freescale Semiconductor, Inc. 3 * 4 * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and 5 * arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains 6 * cpu specific common code for 85xx/86xx processors. 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 26 #include <common.h> 27 #include <libfdt.h> 28 #include <fdt_support.h> 29 #include <asm/mp.h> 30 31 #if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)) 32 static int ft_del_cpuhandle(void *blob, int cpuhandle) 33 { 34 int off, ret = -FDT_ERR_NOTFOUND; 35 36 /* if we find a match, we'll delete at it which point the offsets are 37 * invalid so we start over from the beginning 38 */ 39 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle", 40 &cpuhandle, 4); 41 while (off != -FDT_ERR_NOTFOUND) { 42 fdt_delprop(blob, off, "cpu-handle"); 43 ret = 1; 44 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle", 45 &cpuhandle, 4); 46 } 47 48 return ret; 49 } 50 51 void ft_fixup_num_cores(void *blob) { 52 int off, num_cores, del_cores; 53 54 del_cores = 0; 55 num_cores = cpu_numcores(); 56 57 off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); 58 while (off != -FDT_ERR_NOTFOUND) { 59 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0); 60 61 if ((*reg > num_cores-1) || (is_core_disabled(*reg))) { 62 int ph = fdt_get_phandle(blob, off); 63 64 /* Delete the cpu node once there are no cpu handles */ 65 if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) { 66 fdt_del_node(blob, off); 67 del_cores++; 68 } 69 /* either we deleted some cpu handles or the cpu node 70 * so we reset the offset back to the start since we 71 * can't trust the offsets anymore 72 */ 73 off = -1; 74 } 75 off = fdt_node_offset_by_prop_value(blob, off, 76 "device_type", "cpu", 4); 77 } 78 debug ("%x core system found\n", num_cores); 79 debug ("deleted %d extra core entry entries from device tree\n", 80 del_cores); 81 } 82 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */ 83 84 #ifdef CONFIG_HAS_FSL_DR_USB 85 void fdt_fixup_dr_usb(void *blob, bd_t *bd) 86 { 87 char *mode; 88 char *type; 89 const char *compat = "fsl-usb2-dr"; 90 const char *prop_mode = "dr_mode"; 91 const char *prop_type = "phy_type"; 92 int node_offset; 93 int err; 94 95 mode = getenv("usb_dr_mode"); 96 type = getenv("usb_phy_type"); 97 if (!mode && !type) 98 return; 99 100 node_offset = fdt_node_offset_by_compatible(blob, 0, compat); 101 if (node_offset < 0) { 102 printf("WARNING: could not find compatible node %s: %s.\n", 103 compat, fdt_strerror(node_offset)); 104 return; 105 } 106 107 if (mode) { 108 err = fdt_setprop(blob, node_offset, prop_mode, mode, 109 strlen(mode) + 1); 110 if (err < 0) 111 printf("WARNING: could not set %s for %s: %s.\n", 112 prop_mode, compat, fdt_strerror(err)); 113 } 114 115 if (type) { 116 err = fdt_setprop(blob, node_offset, prop_type, type, 117 strlen(type) + 1); 118 if (err < 0) 119 printf("WARNING: could not set %s for %s: %s.\n", 120 prop_type, compat, fdt_strerror(err)); 121 } 122 } 123 #endif /* CONFIG_HAS_FSL_DR_USB */ 124 125 /* 126 * update crypto node properties to a specified revision of the SEC 127 * called with sec_rev == 0 if not on an E processor 128 */ 129 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */ 130 void fdt_fixup_crypto_node(void *blob, int sec_rev) 131 { 132 const struct sec_rev_prop { 133 u32 sec_rev; 134 u32 num_channels; 135 u32 channel_fifo_len; 136 u32 exec_units_mask; 137 u32 descriptor_types_mask; 138 } sec_rev_prop_list [] = { 139 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */ 140 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */ 141 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */ 142 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */ 143 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */ 144 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */ 145 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */ 146 }; 147 char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) * 148 sizeof("fsl,secX.Y")]; 149 int crypto_node, sec_idx, err; 150 char *p; 151 u32 val; 152 153 /* locate crypto node based on lowest common compatible */ 154 crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0"); 155 if (crypto_node == -FDT_ERR_NOTFOUND) 156 return; 157 158 /* delete it if not on an E-processor */ 159 if (crypto_node > 0 && !sec_rev) { 160 fdt_del_node(blob, crypto_node); 161 return; 162 } 163 164 /* else we got called for possible uprev */ 165 for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++) 166 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev) 167 break; 168 169 if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) { 170 puts("warning: unknown SEC revision number\n"); 171 return; 172 } 173 174 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels); 175 err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4); 176 if (err < 0) 177 printf("WARNING: could not set crypto property: %s\n", 178 fdt_strerror(err)); 179 180 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask); 181 err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4); 182 if (err < 0) 183 printf("WARNING: could not set crypto property: %s\n", 184 fdt_strerror(err)); 185 186 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask); 187 err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4); 188 if (err < 0) 189 printf("WARNING: could not set crypto property: %s\n", 190 fdt_strerror(err)); 191 192 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len); 193 err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4); 194 if (err < 0) 195 printf("WARNING: could not set crypto property: %s\n", 196 fdt_strerror(err)); 197 198 val = 0; 199 while (sec_idx >= 0) { 200 p = compat_strlist + val; 201 val += sprintf(p, "fsl,sec%d.%d", 202 (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8, 203 sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1; 204 sec_idx--; 205 } 206 err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val); 207 if (err < 0) 208 printf("WARNING: could not set crypto property: %s\n", 209 fdt_strerror(err)); 210 } 211 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4 /* SEC4 */ 212 void fdt_fixup_crypto_node(void *blob, int sec_rev) 213 { 214 if (!sec_rev) 215 fdt_del_node_and_alias(blob, "crypto"); 216 } 217 #endif 218