1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2011 Linaro Limited
4 * Aneesh V <aneesh@ti.com>
5 */
6 #include <common.h>
7 #include <environment.h>
8 #include <asm/setup.h>
9 #include <asm/arch/sys_proto.h>
10 #include <asm/omap_common.h>
11
do_cancel_out(u32 * num,u32 * den,u32 factor)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
omap_set_fastboot_cpu(void)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 case DRA762_ABZ_ES1_0:
33 case DRA762_ACD_ES1_0:
34 cpu = "DRA762";
35 break;
36 case DRA752_ES1_0:
37 case DRA752_ES1_1:
38 case DRA752_ES2_0:
39 cpu = "DRA752";
40 break;
41 case DRA722_ES1_0:
42 case DRA722_ES2_0:
43 case DRA722_ES2_1:
44 cpu = "DRA722";
45 break;
46 default:
47 cpu = NULL;
48 printf("Warning: fastboot.cpu: unknown CPU rev: %u\n", cpu_rev);
49 }
50
51 env_set("fastboot.cpu", cpu);
52 }
53
omap_set_fastboot_secure(void)54 static void omap_set_fastboot_secure(void)
55 {
56 const char *secure;
57 u32 dev = get_device_type();
58
59 switch (dev) {
60 case EMU_DEVICE:
61 secure = "EMU";
62 break;
63 case HS_DEVICE:
64 secure = "HS";
65 break;
66 case GP_DEVICE:
67 secure = "GP";
68 break;
69 default:
70 secure = NULL;
71 printf("Warning: fastboot.secure: unknown CPU sec: %u\n", dev);
72 }
73
74 env_set("fastboot.secure", secure);
75 }
76
omap_set_fastboot_board_rev(void)77 static void omap_set_fastboot_board_rev(void)
78 {
79 const char *board_rev;
80
81 board_rev = env_get("board_rev");
82 if (board_rev == NULL)
83 printf("Warning: fastboot.board_rev: unknown board revision\n");
84
85 env_set("fastboot.board_rev", board_rev);
86 }
87
88 #ifdef CONFIG_FASTBOOT_FLASH_MMC
omap_mmc_get_part_size(const char * part)89 static u32 omap_mmc_get_part_size(const char *part)
90 {
91 int res;
92 struct blk_desc *dev_desc;
93 disk_partition_t info;
94 u64 sz = 0;
95
96 dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
97 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
98 pr_err("invalid mmc device\n");
99 return 0;
100 }
101
102 /* Check only for EFI (GPT) partition table */
103 res = part_get_info_by_name_type(dev_desc, part, &info, PART_TYPE_EFI);
104 if (res < 0)
105 return 0;
106
107 /* Calculate size in bytes */
108 sz = (info.size * (u64)info.blksz);
109 /* to KiB */
110 sz >>= 10;
111
112 return (u32)sz;
113 }
114
omap_set_fastboot_userdata_size(void)115 static void omap_set_fastboot_userdata_size(void)
116 {
117 char buf[16];
118 u32 sz_kb;
119
120 sz_kb = omap_mmc_get_part_size("userdata");
121 if (sz_kb == 0)
122 return; /* probably it's not Android partition table */
123
124 sprintf(buf, "%u", sz_kb);
125 env_set("fastboot.userdata_size", buf);
126 }
127 #else
omap_set_fastboot_userdata_size(void)128 static inline void omap_set_fastboot_userdata_size(void)
129 {
130 }
131 #endif /* CONFIG_FASTBOOT_FLASH_MMC */
omap_set_fastboot_vars(void)132 void omap_set_fastboot_vars(void)
133 {
134 omap_set_fastboot_cpu();
135 omap_set_fastboot_secure();
136 omap_set_fastboot_board_rev();
137 omap_set_fastboot_userdata_size();
138 }
139 #endif /* CONFIG_FASTBOOT_FLASH */
140
141 /*
142 * Cancel out the denominator and numerator of a fraction
143 * to get smaller numerator and denominator.
144 */
cancel_out(u32 * num,u32 * den,u32 den_limit)145 void cancel_out(u32 *num, u32 *den, u32 den_limit)
146 {
147 do_cancel_out(num, den, 2);
148 do_cancel_out(num, den, 3);
149 do_cancel_out(num, den, 5);
150 do_cancel_out(num, den, 7);
151 do_cancel_out(num, den, 11);
152 do_cancel_out(num, den, 13);
153 do_cancel_out(num, den, 17);
154 while ((*den) > den_limit) {
155 *num /= 2;
156 /*
157 * Round up the denominator so that the final fraction
158 * (num/den) is always <= the desired value
159 */
160 *den = (*den + 1) / 2;
161 }
162 }
163
omap_die_id(unsigned int * die_id)164 __weak void omap_die_id(unsigned int *die_id)
165 {
166 die_id[0] = die_id[1] = die_id[2] = die_id[3] = 0;
167 }
168
omap_die_id_serial(void)169 void omap_die_id_serial(void)
170 {
171 unsigned int die_id[4] = { 0 };
172 char serial_string[17] = { 0 };
173
174 omap_die_id((unsigned int *)&die_id);
175
176 if (!env_get("serial#")) {
177 snprintf(serial_string, sizeof(serial_string),
178 "%08x%08x", die_id[0], die_id[3]);
179
180 env_set("serial#", serial_string);
181 }
182 }
183
omap_die_id_get_board_serial(struct tag_serialnr * serialnr)184 void omap_die_id_get_board_serial(struct tag_serialnr *serialnr)
185 {
186 char *serial_string;
187 unsigned long long serial;
188
189 serial_string = env_get("serial#");
190
191 if (serial_string) {
192 serial = simple_strtoull(serial_string, NULL, 16);
193
194 serialnr->high = (unsigned int) (serial >> 32);
195 serialnr->low = (unsigned int) (serial & 0xffffffff);
196 } else {
197 serialnr->high = 0;
198 serialnr->low = 0;
199 }
200 }
201
omap_die_id_usbethaddr(void)202 void omap_die_id_usbethaddr(void)
203 {
204 unsigned int die_id[4] = { 0 };
205 unsigned char mac[6] = { 0 };
206
207 omap_die_id((unsigned int *)&die_id);
208
209 if (!env_get("usbethaddr")) {
210 /*
211 * Create a fake MAC address from the processor ID code.
212 * First byte is 0x02 to signify locally administered.
213 */
214 mac[0] = 0x02;
215 mac[1] = die_id[3] & 0xff;
216 mac[2] = die_id[2] & 0xff;
217 mac[3] = die_id[1] & 0xff;
218 mac[4] = die_id[0] & 0xff;
219 mac[5] = (die_id[0] >> 8) & 0xff;
220
221 eth_env_set_enetaddr("usbethaddr", mac);
222
223 if (!env_get("ethaddr"))
224 eth_env_set_enetaddr("ethaddr", mac);
225 }
226 }
227
omap_die_id_display(void)228 void omap_die_id_display(void)
229 {
230 unsigned int die_id[4] = { 0 };
231
232 omap_die_id(die_id);
233
234 printf("OMAP die ID: %08x%08x%08x%08x\n", die_id[3], die_id[2],
235 die_id[1], die_id[0]);
236 }
237