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 <env.h>
8 #include <part.h>
9 #include <asm/setup.h>
10 #include <asm/arch/sys_proto.h>
11 #include <asm/omap_common.h>
12
do_cancel_out(u32 * num,u32 * den,u32 factor)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
omap_set_fastboot_cpu(void)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 case DRA762_ABZ_ES1_0:
34 case DRA762_ACD_ES1_0:
35 cpu = "DRA762";
36 break;
37 case DRA752_ES1_0:
38 case DRA752_ES1_1:
39 case DRA752_ES2_0:
40 cpu = "DRA752";
41 break;
42 case DRA722_ES1_0:
43 case DRA722_ES2_0:
44 case DRA722_ES2_1:
45 cpu = "DRA722";
46 break;
47 default:
48 cpu = NULL;
49 printf("Warning: fastboot.cpu: unknown CPU rev: %u\n", cpu_rev);
50 }
51
52 env_set("fastboot.cpu", cpu);
53 }
54
omap_set_fastboot_secure(void)55 static void omap_set_fastboot_secure(void)
56 {
57 const char *secure;
58 u32 dev = get_device_type();
59
60 switch (dev) {
61 case EMU_DEVICE:
62 secure = "EMU";
63 break;
64 case HS_DEVICE:
65 secure = "HS";
66 break;
67 case GP_DEVICE:
68 secure = "GP";
69 break;
70 default:
71 secure = NULL;
72 printf("Warning: fastboot.secure: unknown CPU sec: %u\n", dev);
73 }
74
75 env_set("fastboot.secure", secure);
76 }
77
omap_set_fastboot_board_rev(void)78 static void omap_set_fastboot_board_rev(void)
79 {
80 const char *board_rev;
81
82 board_rev = env_get("board_rev");
83 if (board_rev == NULL)
84 printf("Warning: fastboot.board_rev: unknown board revision\n");
85
86 env_set("fastboot.board_rev", board_rev);
87 }
88
89 #ifdef CONFIG_FASTBOOT_FLASH_MMC
omap_mmc_get_part_size(const char * part)90 static u32 omap_mmc_get_part_size(const char *part)
91 {
92 int res;
93 struct blk_desc *dev_desc;
94 struct disk_partition info;
95 u64 sz = 0;
96
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");
100 return 0;
101 }
102
103 /* Check only for EFI (GPT) partition table */
104 res = part_get_info_by_name_type(dev_desc, part, &info, PART_TYPE_EFI);
105 if (res < 0)
106 return 0;
107
108 /* Calculate size in bytes */
109 sz = (info.size * (u64)info.blksz);
110 /* to KiB */
111 sz >>= 10;
112
113 return (u32)sz;
114 }
115
omap_set_fastboot_userdata_size(void)116 static void omap_set_fastboot_userdata_size(void)
117 {
118 char buf[16];
119 u32 sz_kb;
120
121 sz_kb = omap_mmc_get_part_size("userdata");
122 if (sz_kb == 0)
123 return; /* probably it's not Android partition table */
124
125 sprintf(buf, "%u", sz_kb);
126 env_set("fastboot.userdata_size", buf);
127 }
128 #else
omap_set_fastboot_userdata_size(void)129 static inline void omap_set_fastboot_userdata_size(void)
130 {
131 }
132 #endif /* CONFIG_FASTBOOT_FLASH_MMC */
133
omap_set_fastboot_product(void)134 static void omap_set_fastboot_product(void)
135 {
136 const char *board_name;
137
138 board_name = env_get("board_name");
139 if (board_name == NULL)
140 printf("Warning: fastboot.product: unknown board\n");
141
142 env_set("fastboot.product", board_name);
143 }
144
omap_set_fastboot_vars(void)145 void omap_set_fastboot_vars(void)
146 {
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();
152 }
153 #endif /* CONFIG_FASTBOOT_FLASH */
154
155 /*
156 * Cancel out the denominator and numerator of a fraction
157 * to get smaller numerator and denominator.
158 */
cancel_out(u32 * num,u32 * den,u32 den_limit)159 void cancel_out(u32 *num, u32 *den, u32 den_limit)
160 {
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) {
169 *num /= 2;
170 /*
171 * Round up the denominator so that the final fraction
172 * (num/den) is always <= the desired value
173 */
174 *den = (*den + 1) / 2;
175 }
176 }
177
omap_die_id(unsigned int * die_id)178 __weak void omap_die_id(unsigned int *die_id)
179 {
180 die_id[0] = die_id[1] = die_id[2] = die_id[3] = 0;
181 }
182
omap_die_id_serial(void)183 void omap_die_id_serial(void)
184 {
185 unsigned int die_id[4] = { 0 };
186 char serial_string[17] = { 0 };
187
188 omap_die_id((unsigned int *)&die_id);
189
190 if (!env_get("serial#")) {
191 snprintf(serial_string, sizeof(serial_string),
192 "%08x%08x", die_id[0], die_id[3]);
193
194 env_set("serial#", serial_string);
195 }
196 }
197
omap_die_id_get_board_serial(struct tag_serialnr * serialnr)198 void omap_die_id_get_board_serial(struct tag_serialnr *serialnr)
199 {
200 char *serial_string;
201 unsigned long long serial;
202
203 serial_string = env_get("serial#");
204
205 if (serial_string) {
206 serial = simple_strtoull(serial_string, NULL, 16);
207
208 serialnr->high = (unsigned int) (serial >> 32);
209 serialnr->low = (unsigned int) (serial & 0xffffffff);
210 } else {
211 serialnr->high = 0;
212 serialnr->low = 0;
213 }
214 }
215
omap_die_id_usbethaddr(void)216 void omap_die_id_usbethaddr(void)
217 {
218 unsigned int die_id[4] = { 0 };
219 unsigned char mac[6] = { 0 };
220
221 omap_die_id((unsigned int *)&die_id);
222
223 if (!env_get("usbethaddr")) {
224 /*
225 * Create a fake MAC address from the processor ID code.
226 * First byte is 0x02 to signify locally administered.
227 */
228 mac[0] = 0x02;
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;
234
235 eth_env_set_enetaddr("usbethaddr", mac);
236
237 if (!env_get("ethaddr"))
238 eth_env_set_enetaddr("ethaddr", mac);
239 }
240 }
241
omap_die_id_display(void)242 void omap_die_id_display(void)
243 {
244 unsigned int die_id[4] = { 0 };
245
246 omap_die_id(die_id);
247
248 printf("OMAP die ID: %08x%08x%08x%08x\n", die_id[3], die_id[2],
249 die_id[1], die_id[0]);
250 }
251