common: Drop image.h from common header
[oweals/u-boot.git] / board / ti / am65x / evm.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Board specific initialization for AM654 EVM
4  *
5  * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
6  *      Lokesh Vutla <lokeshvutla@ti.com>
7  *
8  */
9
10 #include <common.h>
11 #include <dm.h>
12 #include <fdt_support.h>
13 #include <image.h>
14 #include <init.h>
15 #include <net.h>
16 #include <asm/arch/sys_proto.h>
17 #include <asm/arch/hardware.h>
18 #include <asm/gpio.h>
19 #include <asm/io.h>
20 #include <asm/omap_common.h>
21 #include <env.h>
22 #include <spl.h>
23 #include <asm/arch/sys_proto.h>
24
25 #include "../common/board_detect.h"
26
27 #define board_is_am65x_base_board()     board_ti_is("AM6-COMPROCEVM")
28
29 /* Daughter card presence detection signals */
30 enum {
31         AM65X_EVM_APP_BRD_DET,
32         AM65X_EVM_LCD_BRD_DET,
33         AM65X_EVM_SERDES_BRD_DET,
34         AM65X_EVM_HDMI_GPMC_BRD_DET,
35         AM65X_EVM_BRD_DET_COUNT,
36 };
37
38 /* Max number of MAC addresses that are parsed/processed per daughter card */
39 #define DAUGHTER_CARD_NO_OF_MAC_ADDR    8
40
41 DECLARE_GLOBAL_DATA_PTR;
42
43 int board_init(void)
44 {
45         return 0;
46 }
47
48 int dram_init(void)
49 {
50 #ifdef CONFIG_PHYS_64BIT
51         gd->ram_size = 0x100000000;
52 #else
53         gd->ram_size = 0x80000000;
54 #endif
55
56         return 0;
57 }
58
59 ulong board_get_usable_ram_top(ulong total_size)
60 {
61 #ifdef CONFIG_PHYS_64BIT
62         /* Limit RAM used by U-Boot to the DDR low region */
63         if (gd->ram_top > 0x100000000)
64                 return 0x100000000;
65 #endif
66
67         return gd->ram_top;
68 }
69
70 int dram_init_banksize(void)
71 {
72         /* Bank 0 declares the memory available in the DDR low region */
73         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
74         gd->bd->bi_dram[0].size = 0x80000000;
75
76 #ifdef CONFIG_PHYS_64BIT
77         /* Bank 1 declares the memory available in the DDR high region */
78         gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1;
79         gd->bd->bi_dram[1].size = 0x80000000;
80 #endif
81
82         return 0;
83 }
84
85 #ifdef CONFIG_SPL_LOAD_FIT
86 int board_fit_config_name_match(const char *name)
87 {
88 #ifdef CONFIG_TARGET_AM654_A53_EVM
89         if (!strcmp(name, "k3-am654-base-board"))
90                 return 0;
91 #endif
92
93         return -1;
94 }
95 #endif
96
97 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
98 int ft_board_setup(void *blob, bd_t *bd)
99 {
100         int ret;
101
102         ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", "sram@70000000");
103         if (ret) {
104                 printf("%s: fixing up msmc ram failed %d\n", __func__, ret);
105                 return ret;
106         }
107
108 #if defined(CONFIG_TI_SECURE_DEVICE)
109         /* Make HW RNG reserved for secure world use */
110         ret = fdt_disable_node(blob, "/interconnect@100000/trng@4e10000");
111         if (ret)
112                 printf("%s: disabling TRGN failed %d\n", __func__, ret);
113 #endif
114
115         return 0;
116 }
117 #endif
118
119 int do_board_detect(void)
120 {
121         int ret;
122
123         ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
124                                          CONFIG_EEPROM_CHIP_ADDRESS);
125         if (ret)
126                 pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
127                        CONFIG_EEPROM_CHIP_ADDRESS, ret);
128
129         return ret;
130 }
131
132 int checkboard(void)
133 {
134         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
135
136         if (do_board_detect())
137                 /* EEPROM not populated */
138                 printf("Board: %s rev %s\n", "AM6-COMPROCEVM", "E3");
139         else
140                 printf("Board: %s rev %s\n", ep->name, ep->version);
141
142         return 0;
143 }
144
145 static void setup_board_eeprom_env(void)
146 {
147         char *name = "am65x";
148
149         if (do_board_detect())
150                 goto invalid_eeprom;
151
152         if (board_is_am65x_base_board())
153                 name = "am65x";
154         else
155                 printf("Unidentified board claims %s in eeprom header\n",
156                        board_ti_get_name());
157
158 invalid_eeprom:
159         set_board_info_env_am6(name);
160 }
161
162 static int init_daughtercard_det_gpio(char *gpio_name, struct gpio_desc *desc)
163 {
164         int ret;
165
166         memset(desc, 0, sizeof(*desc));
167
168         ret = dm_gpio_lookup_name(gpio_name, desc);
169         if (ret < 0)
170                 return ret;
171
172         /* Request GPIO, simply re-using the name as label */
173         ret = dm_gpio_request(desc, gpio_name);
174         if (ret < 0)
175                 return ret;
176
177         return dm_gpio_set_dir_flags(desc, GPIOD_IS_IN);
178 }
179
180 static int probe_daughtercards(void)
181 {
182         struct ti_am6_eeprom ep;
183         struct gpio_desc board_det_gpios[AM65X_EVM_BRD_DET_COUNT];
184         char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
185         u8 mac_addr_cnt;
186         char name_overlays[1024] = { 0 };
187         int i, j;
188         int ret;
189
190         /*
191          * Daughter card presence detection signal name to GPIO (via I2C I/O
192          * expander @ address 0x38) name and EEPROM I2C address mapping.
193          */
194         const struct {
195                 char *gpio_name;
196                 u8 i2c_addr;
197         } slot_map[AM65X_EVM_BRD_DET_COUNT] = {
198                 { "gpio@38_0", 0x52, }, /* AM65X_EVM_APP_BRD_DET */
199                 { "gpio@38_1", 0x55, }, /* AM65X_EVM_LCD_BRD_DET */
200                 { "gpio@38_2", 0x54, }, /* AM65X_EVM_SERDES_BRD_DET */
201                 { "gpio@38_3", 0x53, }, /* AM65X_EVM_HDMI_GPMC_BRD_DET */
202         };
203
204         /* Declaration of daughtercards to probe */
205         const struct {
206                 u8 slot_index;          /* Slot the card is installed */
207                 char *card_name;        /* EEPROM-programmed card name */
208                 char *dtbo_name;        /* Device tree overlay to apply */
209                 u8 eth_offset;          /* ethXaddr MAC address index offset */
210         } cards[] = {
211                 {
212                         AM65X_EVM_APP_BRD_DET,
213                         "AM6-GPAPPEVM",
214                         "k3-am654-gp.dtbo",
215                         0,
216                 },
217                 {
218                         AM65X_EVM_APP_BRD_DET,
219                         "AM6-IDKAPPEVM",
220                         "k3-am654-idk.dtbo",
221                         3,
222                 },
223                 {
224                         AM65X_EVM_SERDES_BRD_DET,
225                         "SER-PCIE2LEVM",
226                         "k3-am654-pcie-usb2.dtbo",
227                         0,
228                 },
229                 {
230                         AM65X_EVM_SERDES_BRD_DET,
231                         "SER-PCIEUSBEVM",
232                         "k3-am654-pcie-usb3.dtbo",
233                         0,
234                 },
235                 {
236                         AM65X_EVM_LCD_BRD_DET,
237                         "OLDI-LCD1EVM",
238                         "k3-am654-evm-oldi-lcd1evm.dtbo",
239                         0,
240                 },
241         };
242
243         /*
244          * Initialize GPIO used for daughtercard slot presence detection and
245          * keep the resulting handles in local array for easier access.
246          */
247         for (i = 0; i < AM65X_EVM_BRD_DET_COUNT; i++) {
248                 ret = init_daughtercard_det_gpio(slot_map[i].gpio_name,
249                                                  &board_det_gpios[i]);
250                 if (ret < 0)
251                         return ret;
252         }
253
254         for (i = 0; i < ARRAY_SIZE(cards); i++) {
255                 /* Obtain card-specific slot index and associated I2C address */
256                 u8 slot_index = cards[i].slot_index;
257                 u8 i2c_addr = slot_map[slot_index].i2c_addr;
258
259                 /*
260                  * The presence detection signal is active-low, hence skip
261                  * over this card slot if anything other than 0 is returned.
262                  */
263                 ret = dm_gpio_get_value(&board_det_gpios[slot_index]);
264                 if (ret < 0)
265                         return ret;
266                 else if (ret)
267                         continue;
268
269                 /* Get and parse the daughter card EEPROM record */
270                 ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS, i2c_addr,
271                                             &ep,
272                                             (char **)mac_addr,
273                                             DAUGHTER_CARD_NO_OF_MAC_ADDR,
274                                             &mac_addr_cnt);
275                 if (ret) {
276                         pr_err("Reading daughtercard EEPROM at 0x%02x failed %d\n",
277                                i2c_addr, ret);
278                         /*
279                          * Even this is pretty serious let's just skip over
280                          * this particular daughtercard, rather than ending
281                          * the probing process altogether.
282                          */
283                         continue;
284                 }
285
286                 /* Only process the parsed data if we found a match */
287                 if (strncmp(ep.name, cards[i].card_name, sizeof(ep.name)))
288                         continue;
289
290                 printf("Detected: %s rev %s\n", ep.name, ep.version);
291
292                 /*
293                  * Populate any MAC addresses from daughtercard into the U-Boot
294                  * environment, starting with a card-specific offset so we can
295                  * have multiple cards contribute to the MAC pool in a well-
296                  * defined manner.
297                  */
298                 for (j = 0; j < mac_addr_cnt; j++) {
299                         if (!is_valid_ethaddr((u8 *)mac_addr[j]))
300                                 continue;
301
302                         eth_env_set_enetaddr_by_index("eth",
303                                                       cards[i].eth_offset + j,
304                                                       (uchar *)mac_addr[j]);
305                 }
306
307                 /* Skip if no overlays are to be added */
308                 if (!strlen(cards[i].dtbo_name))
309                         continue;
310
311                 /*
312                  * Make sure we are not running out of buffer space by checking
313                  * if we can fit the new overlay, a trailing space to be used
314                  * as a separator, plus the terminating zero.
315                  */
316                 if (strlen(name_overlays) + strlen(cards[i].dtbo_name) + 2 >
317                     sizeof(name_overlays))
318                         return -ENOMEM;
319
320                 /* Append to our list of overlays */
321                 strcat(name_overlays, cards[i].dtbo_name);
322                 strcat(name_overlays, " ");
323         }
324
325         /* Apply device tree overlay(s) to the U-Boot environment, if any */
326         if (strlen(name_overlays))
327                 return env_set("name_overlays", name_overlays);
328
329         return 0;
330 }
331
332 int board_late_init(void)
333 {
334         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
335
336         setup_board_eeprom_env();
337
338         /*
339          * The first MAC address for ethernet a.k.a. ethernet0 comes from
340          * efuse populated via the am654 gigabit eth switch subsystem driver.
341          * All the other ones are populated via EEPROM, hence continue with
342          * an index of 1.
343          */
344         board_ti_am6_set_ethaddr(1, ep->mac_addr_cnt);
345
346         /* Check for and probe any plugged-in daughtercards */
347         probe_daughtercards();
348
349         return 0;
350 }