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