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 <environment.h> 9 #include <asm/setup.h> 10 #include <asm/arch/sys_proto.h> 11 #include <asm/omap_common.h> 12 13 static void do_cancel_out(u32 *num, u32 *den, u32 factor) 14 { 15 while (1) { 16 if (((*num)/factor*factor == (*num)) && 17 ((*den)/factor*factor == (*den))) { 18 (*num) /= factor; 19 (*den) /= factor; 20 } else 21 break; 22 } 23 } 24 25 #ifdef CONFIG_FASTBOOT_FLASH 26 static void omap_set_fastboot_cpu(void) 27 { 28 char *cpu; 29 u32 cpu_rev = omap_revision(); 30 31 switch (cpu_rev) { 32 case DRA762_ES1_0: 33 cpu = "DRA762"; 34 break; 35 case DRA752_ES1_0: 36 case DRA752_ES1_1: 37 case DRA752_ES2_0: 38 cpu = "DRA752"; 39 break; 40 case DRA722_ES1_0: 41 case DRA722_ES2_0: 42 case DRA722_ES2_1: 43 cpu = "DRA722"; 44 break; 45 default: 46 cpu = NULL; 47 printf("Warning: fastboot.cpu: unknown CPU rev: %u\n", cpu_rev); 48 } 49 50 env_set("fastboot.cpu", cpu); 51 } 52 53 static void omap_set_fastboot_secure(void) 54 { 55 const char *secure; 56 u32 dev = get_device_type(); 57 58 switch (dev) { 59 case EMU_DEVICE: 60 secure = "EMU"; 61 break; 62 case HS_DEVICE: 63 secure = "HS"; 64 break; 65 case GP_DEVICE: 66 secure = "GP"; 67 break; 68 default: 69 secure = NULL; 70 printf("Warning: fastboot.secure: unknown CPU sec: %u\n", dev); 71 } 72 73 env_set("fastboot.secure", secure); 74 } 75 76 static void omap_set_fastboot_board_rev(void) 77 { 78 const char *board_rev; 79 80 board_rev = env_get("board_rev"); 81 if (board_rev == NULL) 82 printf("Warning: fastboot.board_rev: unknown board revision\n"); 83 84 env_set("fastboot.board_rev", board_rev); 85 } 86 87 #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV 88 static u32 omap_mmc_get_part_size(const char *part) 89 { 90 int res; 91 struct blk_desc *dev_desc; 92 disk_partition_t info; 93 u64 sz = 0; 94 95 dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); 96 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { 97 pr_err("invalid mmc device\n"); 98 return 0; 99 } 100 101 /* Check only for EFI (GPT) partition table */ 102 res = part_get_info_by_name_type(dev_desc, part, &info, PART_TYPE_EFI); 103 if (res < 0) 104 return 0; 105 106 /* Calculate size in bytes */ 107 sz = (info.size * (u64)info.blksz); 108 /* to KiB */ 109 sz >>= 10; 110 111 return (u32)sz; 112 } 113 114 static void omap_set_fastboot_userdata_size(void) 115 { 116 char buf[16]; 117 u32 sz_kb; 118 119 sz_kb = omap_mmc_get_part_size("userdata"); 120 if (sz_kb == 0) 121 return; /* probably it's not Android partition table */ 122 123 sprintf(buf, "%u", sz_kb); 124 env_set("fastboot.userdata_size", buf); 125 } 126 #else 127 static inline void omap_set_fastboot_userdata_size(void) 128 { 129 } 130 #endif /* CONFIG_FASTBOOT_FLASH_MMC_DEV */ 131 void omap_set_fastboot_vars(void) 132 { 133 omap_set_fastboot_cpu(); 134 omap_set_fastboot_secure(); 135 omap_set_fastboot_board_rev(); 136 omap_set_fastboot_userdata_size(); 137 } 138 #endif /* CONFIG_FASTBOOT_FLASH */ 139 140 /* 141 * Cancel out the denominator and numerator of a fraction 142 * to get smaller numerator and denominator. 143 */ 144 void cancel_out(u32 *num, u32 *den, u32 den_limit) 145 { 146 do_cancel_out(num, den, 2); 147 do_cancel_out(num, den, 3); 148 do_cancel_out(num, den, 5); 149 do_cancel_out(num, den, 7); 150 do_cancel_out(num, den, 11); 151 do_cancel_out(num, den, 13); 152 do_cancel_out(num, den, 17); 153 while ((*den) > den_limit) { 154 *num /= 2; 155 /* 156 * Round up the denominator so that the final fraction 157 * (num/den) is always <= the desired value 158 */ 159 *den = (*den + 1) / 2; 160 } 161 } 162 163 __weak void omap_die_id(unsigned int *die_id) 164 { 165 die_id[0] = die_id[1] = die_id[2] = die_id[3] = 0; 166 } 167 168 void omap_die_id_serial(void) 169 { 170 unsigned int die_id[4] = { 0 }; 171 char serial_string[17] = { 0 }; 172 173 omap_die_id((unsigned int *)&die_id); 174 175 if (!env_get("serial#")) { 176 snprintf(serial_string, sizeof(serial_string), 177 "%08x%08x", die_id[0], die_id[3]); 178 179 env_set("serial#", serial_string); 180 } 181 } 182 183 void omap_die_id_get_board_serial(struct tag_serialnr *serialnr) 184 { 185 char *serial_string; 186 unsigned long long serial; 187 188 serial_string = env_get("serial#"); 189 190 if (serial_string) { 191 serial = simple_strtoull(serial_string, NULL, 16); 192 193 serialnr->high = (unsigned int) (serial >> 32); 194 serialnr->low = (unsigned int) (serial & 0xffffffff); 195 } else { 196 serialnr->high = 0; 197 serialnr->low = 0; 198 } 199 } 200 201 void omap_die_id_usbethaddr(void) 202 { 203 unsigned int die_id[4] = { 0 }; 204 unsigned char mac[6] = { 0 }; 205 206 omap_die_id((unsigned int *)&die_id); 207 208 if (!env_get("usbethaddr")) { 209 /* 210 * Create a fake MAC address from the processor ID code. 211 * First byte is 0x02 to signify locally administered. 212 */ 213 mac[0] = 0x02; 214 mac[1] = die_id[3] & 0xff; 215 mac[2] = die_id[2] & 0xff; 216 mac[3] = die_id[1] & 0xff; 217 mac[4] = die_id[0] & 0xff; 218 mac[5] = (die_id[0] >> 8) & 0xff; 219 220 eth_env_set_enetaddr("usbethaddr", mac); 221 222 if (!env_get("ethaddr")) 223 eth_env_set_enetaddr("ethaddr", mac); 224 } 225 } 226 227 void omap_die_id_display(void) 228 { 229 unsigned int die_id[4] = { 0 }; 230 231 omap_die_id(die_id); 232 233 printf("OMAP die ID: %08x%08x%08x%08x\n", die_id[3], die_id[2], 234 die_id[1], die_id[0]); 235 } 236