1 /* 2 * Copyright 2011 Linaro Limited 3 * Aneesh V <aneesh@ti.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 #include <common.h> 8 #include <asm/setup.h> 9 #include <asm/arch/sys_proto.h> 10 static void do_cancel_out(u32 *num, u32 *den, u32 factor) 11 { 12 while (1) { 13 if (((*num)/factor*factor == (*num)) && 14 ((*den)/factor*factor == (*den))) { 15 (*num) /= factor; 16 (*den) /= factor; 17 } else 18 break; 19 } 20 } 21 22 #ifdef CONFIG_FASTBOOT_FLASH 23 static void omap_set_fastboot_cpu(void) 24 { 25 char *cpu; 26 u32 cpu_rev = omap_revision(); 27 28 switch (cpu_rev) { 29 case DRA752_ES1_0: 30 case DRA752_ES1_1: 31 case DRA752_ES2_0: 32 cpu = "DRA752"; 33 break; 34 case DRA722_ES1_0: 35 case DRA722_ES2_0: 36 cpu = "DRA722"; 37 break; 38 default: 39 cpu = NULL; 40 printf("Warning: fastboot.cpu: unknown CPU rev: %u\n", cpu_rev); 41 } 42 43 env_set("fastboot.cpu", cpu); 44 } 45 46 static void omap_set_fastboot_secure(void) 47 { 48 const char *secure; 49 u32 dev = get_device_type(); 50 51 switch (dev) { 52 case EMU_DEVICE: 53 secure = "EMU"; 54 break; 55 case HS_DEVICE: 56 secure = "HS"; 57 break; 58 case GP_DEVICE: 59 secure = "GP"; 60 break; 61 default: 62 secure = NULL; 63 printf("Warning: fastboot.secure: unknown CPU sec: %u\n", dev); 64 } 65 66 env_set("fastboot.secure", secure); 67 } 68 69 static void omap_set_fastboot_board_rev(void) 70 { 71 const char *board_rev; 72 73 board_rev = env_get("board_rev"); 74 if (board_rev == NULL) 75 printf("Warning: fastboot.board_rev: unknown board revision\n"); 76 77 env_set("fastboot.board_rev", board_rev); 78 } 79 80 #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV 81 static u32 omap_mmc_get_part_size(const char *part) 82 { 83 int res; 84 struct blk_desc *dev_desc; 85 disk_partition_t info; 86 u64 sz = 0; 87 88 dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); 89 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { 90 error("invalid mmc device\n"); 91 return 0; 92 } 93 94 res = part_get_info_by_name(dev_desc, part, &info); 95 if (res < 0) { 96 error("cannot find partition: '%s'\n", part); 97 return 0; 98 } 99 100 /* Calculate size in bytes */ 101 sz = (info.size * (u64)info.blksz); 102 /* to KiB */ 103 sz >>= 10; 104 105 return (u32)sz; 106 } 107 108 static void omap_set_fastboot_userdata_size(void) 109 { 110 char buf[16]; 111 u32 sz_kb; 112 113 sz_kb = omap_mmc_get_part_size("userdata"); 114 if (sz_kb == 0) { 115 buf[0] = '\0'; 116 printf("Warning: fastboot.userdata_size: unable to calc\n"); 117 } else { 118 sprintf(buf, "%u", sz_kb); 119 } 120 121 env_set("fastboot.userdata_size", buf); 122 } 123 #else 124 static inline void omap_set_fastboot_userdata_size(void) 125 { 126 } 127 #endif /* CONFIG_FASTBOOT_FLASH_MMC_DEV */ 128 void omap_set_fastboot_vars(void) 129 { 130 omap_set_fastboot_cpu(); 131 omap_set_fastboot_secure(); 132 omap_set_fastboot_board_rev(); 133 omap_set_fastboot_userdata_size(); 134 } 135 #endif /* CONFIG_FASTBOOT_FLASH */ 136 137 /* 138 * Cancel out the denominator and numerator of a fraction 139 * to get smaller numerator and denominator. 140 */ 141 void cancel_out(u32 *num, u32 *den, u32 den_limit) 142 { 143 do_cancel_out(num, den, 2); 144 do_cancel_out(num, den, 3); 145 do_cancel_out(num, den, 5); 146 do_cancel_out(num, den, 7); 147 do_cancel_out(num, den, 11); 148 do_cancel_out(num, den, 13); 149 do_cancel_out(num, den, 17); 150 while ((*den) > den_limit) { 151 *num /= 2; 152 /* 153 * Round up the denominator so that the final fraction 154 * (num/den) is always <= the desired value 155 */ 156 *den = (*den + 1) / 2; 157 } 158 } 159 160 __weak void omap_die_id(unsigned int *die_id) 161 { 162 die_id[0] = die_id[1] = die_id[2] = die_id[3] = 0; 163 } 164 165 void omap_die_id_serial(void) 166 { 167 unsigned int die_id[4] = { 0 }; 168 char serial_string[17] = { 0 }; 169 170 omap_die_id((unsigned int *)&die_id); 171 172 if (!env_get("serial#")) { 173 snprintf(serial_string, sizeof(serial_string), 174 "%08x%08x", die_id[0], die_id[3]); 175 176 env_set("serial#", serial_string); 177 } 178 } 179 180 void omap_die_id_get_board_serial(struct tag_serialnr *serialnr) 181 { 182 char *serial_string; 183 unsigned long long serial; 184 185 serial_string = env_get("serial#"); 186 187 if (serial_string) { 188 serial = simple_strtoull(serial_string, NULL, 16); 189 190 serialnr->high = (unsigned int) (serial >> 32); 191 serialnr->low = (unsigned int) (serial & 0xffffffff); 192 } else { 193 serialnr->high = 0; 194 serialnr->low = 0; 195 } 196 } 197 198 void omap_die_id_usbethaddr(void) 199 { 200 unsigned int die_id[4] = { 0 }; 201 unsigned char mac[6] = { 0 }; 202 203 omap_die_id((unsigned int *)&die_id); 204 205 if (!env_get("usbethaddr")) { 206 /* 207 * Create a fake MAC address from the processor ID code. 208 * First byte is 0x02 to signify locally administered. 209 */ 210 mac[0] = 0x02; 211 mac[1] = die_id[3] & 0xff; 212 mac[2] = die_id[2] & 0xff; 213 mac[3] = die_id[1] & 0xff; 214 mac[4] = die_id[0] & 0xff; 215 mac[5] = (die_id[0] >> 8) & 0xff; 216 217 eth_env_set_enetaddr("usbethaddr", mac); 218 } 219 } 220 221 void omap_die_id_display(void) 222 { 223 unsigned int die_id[4] = { 0 }; 224 225 omap_die_id(die_id); 226 227 printf("OMAP die ID: %08x%08x%08x%08x\n", die_id[3], die_id[2], 228 die_id[1], die_id[0]); 229 } 230