1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2011 Linaro Limited
4 * Aneesh V <aneesh@ti.com>
10 #include <asm/arch/sys_proto.h>
11 #include <asm/omap_common.h>
13 static void do_cancel_out(u32 *num, u32 *den, u32 factor)
16 if (((*num)/factor*factor == (*num)) &&
17 ((*den)/factor*factor == (*den))) {
25 #ifdef CONFIG_FASTBOOT_FLASH
26 static void omap_set_fastboot_cpu(void)
29 u32 cpu_rev = omap_revision();
33 case DRA762_ABZ_ES1_0:
34 case DRA762_ACD_ES1_0:
49 printf("Warning: fastboot.cpu: unknown CPU rev: %u\n", cpu_rev);
52 env_set("fastboot.cpu", cpu);
55 static void omap_set_fastboot_secure(void)
58 u32 dev = get_device_type();
72 printf("Warning: fastboot.secure: unknown CPU sec: %u\n", dev);
75 env_set("fastboot.secure", secure);
78 static void omap_set_fastboot_board_rev(void)
80 const char *board_rev;
82 board_rev = env_get("board_rev");
83 if (board_rev == NULL)
84 printf("Warning: fastboot.board_rev: unknown board revision\n");
86 env_set("fastboot.board_rev", board_rev);
89 #ifdef CONFIG_FASTBOOT_FLASH_MMC
90 static u32 omap_mmc_get_part_size(const char *part)
93 struct blk_desc *dev_desc;
94 struct disk_partition info;
97 dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
98 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
99 pr_err("invalid mmc device\n");
103 /* Check only for EFI (GPT) partition table */
104 res = part_get_info_by_name_type(dev_desc, part, &info, PART_TYPE_EFI);
108 /* Calculate size in bytes */
109 sz = (info.size * (u64)info.blksz);
116 static void omap_set_fastboot_userdata_size(void)
121 sz_kb = omap_mmc_get_part_size("userdata");
123 return; /* probably it's not Android partition table */
125 sprintf(buf, "%u", sz_kb);
126 env_set("fastboot.userdata_size", buf);
129 static inline void omap_set_fastboot_userdata_size(void)
132 #endif /* CONFIG_FASTBOOT_FLASH_MMC */
134 static void omap_set_fastboot_product(void)
136 const char *board_name;
138 board_name = env_get("board_name");
139 if (board_name == NULL)
140 printf("Warning: fastboot.product: unknown board\n");
142 env_set("fastboot.product", board_name);
145 void omap_set_fastboot_vars(void)
147 omap_set_fastboot_cpu();
148 omap_set_fastboot_secure();
149 omap_set_fastboot_board_rev();
150 omap_set_fastboot_userdata_size();
151 omap_set_fastboot_product();
153 #endif /* CONFIG_FASTBOOT_FLASH */
156 * Cancel out the denominator and numerator of a fraction
157 * to get smaller numerator and denominator.
159 void cancel_out(u32 *num, u32 *den, u32 den_limit)
161 do_cancel_out(num, den, 2);
162 do_cancel_out(num, den, 3);
163 do_cancel_out(num, den, 5);
164 do_cancel_out(num, den, 7);
165 do_cancel_out(num, den, 11);
166 do_cancel_out(num, den, 13);
167 do_cancel_out(num, den, 17);
168 while ((*den) > den_limit) {
171 * Round up the denominator so that the final fraction
172 * (num/den) is always <= the desired value
174 *den = (*den + 1) / 2;
178 __weak void omap_die_id(unsigned int *die_id)
180 die_id[0] = die_id[1] = die_id[2] = die_id[3] = 0;
183 void omap_die_id_serial(void)
185 unsigned int die_id[4] = { 0 };
186 char serial_string[17] = { 0 };
188 omap_die_id((unsigned int *)&die_id);
190 if (!env_get("serial#")) {
191 snprintf(serial_string, sizeof(serial_string),
192 "%08x%08x", die_id[0], die_id[3]);
194 env_set("serial#", serial_string);
198 void omap_die_id_get_board_serial(struct tag_serialnr *serialnr)
201 unsigned long long serial;
203 serial_string = env_get("serial#");
206 serial = simple_strtoull(serial_string, NULL, 16);
208 serialnr->high = (unsigned int) (serial >> 32);
209 serialnr->low = (unsigned int) (serial & 0xffffffff);
216 void omap_die_id_usbethaddr(void)
218 unsigned int die_id[4] = { 0 };
219 unsigned char mac[6] = { 0 };
221 omap_die_id((unsigned int *)&die_id);
223 if (!env_get("usbethaddr")) {
225 * Create a fake MAC address from the processor ID code.
226 * First byte is 0x02 to signify locally administered.
229 mac[1] = die_id[3] & 0xff;
230 mac[2] = die_id[2] & 0xff;
231 mac[3] = die_id[1] & 0xff;
232 mac[4] = die_id[0] & 0xff;
233 mac[5] = (die_id[0] >> 8) & 0xff;
235 eth_env_set_enetaddr("usbethaddr", mac);
237 if (!env_get("ethaddr"))
238 eth_env_set_enetaddr("ethaddr", mac);
242 void omap_die_id_display(void)
244 unsigned int die_id[4] = { 0 };
248 printf("OMAP die ID: %08x%08x%08x%08x\n", die_id[3], die_id[2],
249 die_id[1], die_id[0]);