1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * board.c
4 *
5 * Board functions for TI AM335X based boards
6 *
7 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
8 */
9
10 #include <common.h>
11 #include <errno.h>
12 #include <linux/libfdt.h>
13 #include <spl.h>
14 #include <asm/arch/cpu.h>
15 #include <asm/arch/hardware.h>
16 #include <asm/arch/omap.h>
17 #include <asm/arch/ddr_defs.h>
18 #include <asm/arch/clock.h>
19 #include <asm/arch/gpio.h>
20 #include <asm/arch/mmc_host_def.h>
21 #include <asm/arch/sys_proto.h>
22 #include <asm/arch/mem.h>
23 #include <asm/arch/mux.h>
24 #include <asm/io.h>
25 #include <asm/emif.h>
26 #include <asm/gpio.h>
27 #include <i2c.h>
28 #include <miiphy.h>
29 #include <cpsw.h>
30 #include <power/tps65910.h>
31 #include <environment.h>
32 #include <watchdog.h>
33 #include "board.h"
34
35 DECLARE_GLOBAL_DATA_PTR;
36
37 /* GPIO that controls DIP switch and mPCIe slot */
38 #define DIP_S1 44
39 #define MPCIE_SW 100
40
41 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
42
baltos_set_console(void)43 static int baltos_set_console(void)
44 {
45 int val, i, dips = 0;
46 char buf[7];
47
48 for (i = 0; i < 4; i++) {
49 sprintf(buf, "dip_s%d", i + 1);
50
51 if (gpio_request(DIP_S1 + i, buf)) {
52 printf("failed to export GPIO %d\n", DIP_S1 + i);
53 return 0;
54 }
55
56 if (gpio_direction_input(DIP_S1 + i)) {
57 printf("failed to set GPIO %d direction\n", DIP_S1 + i);
58 return 0;
59 }
60
61 val = gpio_get_value(DIP_S1 + i);
62 dips |= val << i;
63 }
64
65 printf("DIPs: 0x%1x\n", (~dips) & 0xf);
66
67 if ((dips & 0xf) == 0xe)
68 env_set("console", "ttyUSB0,115200n8");
69
70 return 0;
71 }
72
read_eeprom(BSP_VS_HWPARAM * header)73 static int read_eeprom(BSP_VS_HWPARAM *header)
74 {
75 i2c_set_bus_num(1);
76
77 /* Check if baseboard eeprom is available */
78 if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
79 puts("Could not probe the EEPROM; something fundamentally "
80 "wrong on the I2C bus.\n");
81 return -ENODEV;
82 }
83
84 /* read the eeprom using i2c */
85 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1, (uchar *)header,
86 sizeof(BSP_VS_HWPARAM))) {
87 puts("Could not read the EEPROM; something fundamentally"
88 " wrong on the I2C bus.\n");
89 return -EIO;
90 }
91
92 if (header->Magic != 0xDEADBEEF) {
93
94 printf("Incorrect magic number (0x%x) in EEPROM\n",
95 header->Magic);
96
97 /* fill default values */
98 header->SystemId = 211;
99 header->MAC1[0] = 0x00;
100 header->MAC1[1] = 0x00;
101 header->MAC1[2] = 0x00;
102 header->MAC1[3] = 0x00;
103 header->MAC1[4] = 0x00;
104 header->MAC1[5] = 0x01;
105
106 header->MAC2[0] = 0x00;
107 header->MAC2[1] = 0x00;
108 header->MAC2[2] = 0x00;
109 header->MAC2[3] = 0x00;
110 header->MAC2[4] = 0x00;
111 header->MAC2[5] = 0x02;
112
113 header->MAC3[0] = 0x00;
114 header->MAC3[1] = 0x00;
115 header->MAC3[2] = 0x00;
116 header->MAC3[3] = 0x00;
117 header->MAC3[4] = 0x00;
118 header->MAC3[5] = 0x03;
119 }
120
121 return 0;
122 }
123
124 #if defined(CONFIG_SPL_BUILD) || defined(CONFIG_NOR_BOOT)
125
126 static const struct ddr_data ddr3_baltos_data = {
127 .datardsratio0 = MT41K256M16HA125E_RD_DQS,
128 .datawdsratio0 = MT41K256M16HA125E_WR_DQS,
129 .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
130 .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
131 };
132
133 static const struct cmd_control ddr3_baltos_cmd_ctrl_data = {
134 .cmd0csratio = MT41K256M16HA125E_RATIO,
135 .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
136
137 .cmd1csratio = MT41K256M16HA125E_RATIO,
138 .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
139
140 .cmd2csratio = MT41K256M16HA125E_RATIO,
141 .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
142 };
143
144 static struct emif_regs ddr3_baltos_emif_reg_data = {
145 .sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
146 .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
147 .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
148 .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
149 .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
150 .zq_config = MT41K256M16HA125E_ZQ_CFG,
151 .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
152 };
153
154 #ifdef CONFIG_SPL_OS_BOOT
spl_start_uboot(void)155 int spl_start_uboot(void)
156 {
157 /* break into full u-boot on 'c' */
158 return (serial_tstc() && serial_getc() == 'c');
159 }
160 #endif
161
162 #define OSC (V_OSCK/1000000)
163 const struct dpll_params dpll_ddr = {
164 266, OSC-1, 1, -1, -1, -1, -1};
165 const struct dpll_params dpll_ddr_evm_sk = {
166 303, OSC-1, 1, -1, -1, -1, -1};
167 const struct dpll_params dpll_ddr_baltos = {
168 400, OSC-1, 1, -1, -1, -1, -1};
169
am33xx_spl_board_init(void)170 void am33xx_spl_board_init(void)
171 {
172 int mpu_vdd;
173 int sil_rev;
174
175 /* Get the frequency */
176 dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
177
178 /*
179 * The GP EVM, IDK and EVM SK use a TPS65910 PMIC. For all
180 * MPU frequencies we support we use a CORE voltage of
181 * 1.1375V. For MPU voltage we need to switch based on
182 * the frequency we are running at.
183 */
184 i2c_set_bus_num(1);
185
186 printf("I2C speed: %d Hz\n", CONFIG_SYS_OMAP24_I2C_SPEED);
187
188 if (i2c_probe(TPS65910_CTRL_I2C_ADDR)) {
189 puts("i2c: cannot access TPS65910\n");
190 return;
191 }
192
193 /*
194 * Depending on MPU clock and PG we will need a different
195 * VDD to drive at that speed.
196 */
197 sil_rev = readl(&cdev->deviceid) >> 28;
198 mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev,
199 dpll_mpu_opp100.m);
200
201 /* Tell the TPS65910 to use i2c */
202 tps65910_set_i2c_control();
203
204 /* First update MPU voltage. */
205 if (tps65910_voltage_update(MPU, mpu_vdd))
206 return;
207
208 /* Second, update the CORE voltage. */
209 if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_3))
210 return;
211
212 /* Set CORE Frequencies to OPP100 */
213 do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
214
215 /* Set MPU Frequency to what we detected now that voltages are set */
216 do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
217
218 writel(0x000010ff, PRM_DEVICE_INST + 4);
219 }
220
get_dpll_ddr_params(void)221 const struct dpll_params *get_dpll_ddr_params(void)
222 {
223 enable_i2c1_pin_mux();
224 i2c_set_bus_num(1);
225
226 return &dpll_ddr_baltos;
227 }
228
set_uart_mux_conf(void)229 void set_uart_mux_conf(void)
230 {
231 enable_uart0_pin_mux();
232 }
233
set_mux_conf_regs(void)234 void set_mux_conf_regs(void)
235 {
236 enable_board_pin_mux();
237 }
238
239 const struct ctrl_ioregs ioregs_baltos = {
240 .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
241 .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
242 .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
243 .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
244 .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
245 };
246
sdram_init(void)247 void sdram_init(void)
248 {
249 config_ddr(400, &ioregs_baltos,
250 &ddr3_baltos_data,
251 &ddr3_baltos_cmd_ctrl_data,
252 &ddr3_baltos_emif_reg_data, 0);
253 }
254 #endif
255
256 /*
257 * Basic board specific setup. Pinmux has been handled already.
258 */
board_init(void)259 int board_init(void)
260 {
261 #if defined(CONFIG_HW_WATCHDOG)
262 hw_watchdog_init();
263 #endif
264
265 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
266 #if defined(CONFIG_NOR) || defined(CONFIG_NAND)
267 gpmc_init();
268 #endif
269 return 0;
270 }
271
ft_board_setup(void * blob,bd_t * bd)272 int ft_board_setup(void *blob, bd_t *bd)
273 {
274 int node, ret;
275 unsigned char mac_addr[6];
276 BSP_VS_HWPARAM header;
277
278 /* get production data */
279 if (read_eeprom(&header))
280 return 0;
281
282 /* setup MAC1 */
283 mac_addr[0] = header.MAC1[0];
284 mac_addr[1] = header.MAC1[1];
285 mac_addr[2] = header.MAC1[2];
286 mac_addr[3] = header.MAC1[3];
287 mac_addr[4] = header.MAC1[4];
288 mac_addr[5] = header.MAC1[5];
289
290
291 node = fdt_path_offset(blob, "/ocp/ethernet/slave@4a100200");
292 if (node < 0) {
293 printf("no /soc/fman/ethernet path offset\n");
294 return -ENODEV;
295 }
296
297 ret = fdt_setprop(blob, node, "mac-address", &mac_addr, 6);
298 if (ret) {
299 printf("error setting local-mac-address property\n");
300 return -ENODEV;
301 }
302
303 /* setup MAC2 */
304 mac_addr[0] = header.MAC2[0];
305 mac_addr[1] = header.MAC2[1];
306 mac_addr[2] = header.MAC2[2];
307 mac_addr[3] = header.MAC2[3];
308 mac_addr[4] = header.MAC2[4];
309 mac_addr[5] = header.MAC2[5];
310
311 node = fdt_path_offset(blob, "/ocp/ethernet/slave@4a100300");
312 if (node < 0) {
313 printf("no /soc/fman/ethernet path offset\n");
314 return -ENODEV;
315 }
316
317 ret = fdt_setprop(blob, node, "mac-address", &mac_addr, 6);
318 if (ret) {
319 printf("error setting local-mac-address property\n");
320 return -ENODEV;
321 }
322
323 printf("\nFDT was successfully setup\n");
324
325 return 0;
326 }
327
328 static struct module_pin_mux pcie_sw_pin_mux[] = {
329 {OFFSET(mii1_rxdv), (MODE(7) | PULLUDEN )}, /* GPIO3_4 */
330 {-1},
331 };
332
333 static struct module_pin_mux dip_pin_mux[] = {
334 {OFFSET(gpmc_ad12), (MODE(7) | RXACTIVE )}, /* GPIO1_12 */
335 {OFFSET(gpmc_ad13), (MODE(7) | RXACTIVE )}, /* GPIO1_13 */
336 {OFFSET(gpmc_ad14), (MODE(7) | RXACTIVE )}, /* GPIO1_14 */
337 {OFFSET(gpmc_ad15), (MODE(7) | RXACTIVE )}, /* GPIO1_15 */
338 {-1},
339 };
340
341 #ifdef CONFIG_BOARD_LATE_INIT
board_late_init(void)342 int board_late_init(void)
343 {
344 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
345 BSP_VS_HWPARAM header;
346 char model[4];
347
348 /* get production data */
349 if (read_eeprom(&header)) {
350 strcpy(model, "211");
351 } else {
352 sprintf(model, "%d", header.SystemId);
353 if (header.SystemId == 215) {
354 configure_module_pin_mux(dip_pin_mux);
355 baltos_set_console();
356 }
357 }
358
359 /* turn power for the mPCIe slot */
360 configure_module_pin_mux(pcie_sw_pin_mux);
361 if (gpio_request(MPCIE_SW, "mpcie_sw")) {
362 printf("failed to export GPIO %d\n", MPCIE_SW);
363 return -ENODEV;
364 }
365 if (gpio_direction_output(MPCIE_SW, 1)) {
366 printf("failed to set GPIO %d direction\n", MPCIE_SW);
367 return -ENODEV;
368 }
369
370 env_set("board_name", model);
371 #endif
372
373 return 0;
374 }
375 #endif
376
377 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
378 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
cpsw_control(int enabled)379 static void cpsw_control(int enabled)
380 {
381 /* VTP can be added here */
382
383 return;
384 }
385
386 static struct cpsw_slave_data cpsw_slaves[] = {
387 {
388 .slave_reg_ofs = 0x208,
389 .sliver_reg_ofs = 0xd80,
390 .phy_addr = 0,
391 },
392 {
393 .slave_reg_ofs = 0x308,
394 .sliver_reg_ofs = 0xdc0,
395 .phy_addr = 7,
396 },
397 };
398
399 static struct cpsw_platform_data cpsw_data = {
400 .mdio_base = CPSW_MDIO_BASE,
401 .cpsw_base = CPSW_BASE,
402 .mdio_div = 0xff,
403 .channels = 8,
404 .cpdma_reg_ofs = 0x800,
405 .slaves = 2,
406 .slave_data = cpsw_slaves,
407 .active_slave = 1,
408 .ale_reg_ofs = 0xd00,
409 .ale_entries = 1024,
410 .host_port_reg_ofs = 0x108,
411 .hw_stats_reg_ofs = 0x900,
412 .bd_ram_ofs = 0x2000,
413 .mac_control = (1 << 5),
414 .control = cpsw_control,
415 .host_port_num = 0,
416 .version = CPSW_CTRL_VERSION_2,
417 };
418 #endif
419
420 #if ((defined(CONFIG_SPL_ETH_SUPPORT) || defined(CONFIG_SPL_USB_ETHER)) \
421 && defined(CONFIG_SPL_BUILD)) || \
422 ((defined(CONFIG_DRIVER_TI_CPSW) || \
423 defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)) && \
424 !defined(CONFIG_SPL_BUILD))
board_eth_init(bd_t * bis)425 int board_eth_init(bd_t *bis)
426 {
427 int rv, n = 0;
428 uint8_t mac_addr[6];
429 uint32_t mac_hi, mac_lo;
430
431 /*
432 * Note here that we're using CPSW1 since that has a 1Gbit PHY while
433 * CSPW0 has a 100Mbit PHY.
434 *
435 * On product, CPSW1 maps to port labeled WAN.
436 */
437
438 /* try reading mac address from efuse */
439 mac_lo = readl(&cdev->macid1l);
440 mac_hi = readl(&cdev->macid1h);
441 mac_addr[0] = mac_hi & 0xFF;
442 mac_addr[1] = (mac_hi & 0xFF00) >> 8;
443 mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
444 mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
445 mac_addr[4] = mac_lo & 0xFF;
446 mac_addr[5] = (mac_lo & 0xFF00) >> 8;
447
448 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
449 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
450 if (!env_get("ethaddr")) {
451 printf("<ethaddr> not set. Validating first E-fuse MAC\n");
452
453 if (is_valid_ethaddr(mac_addr))
454 eth_env_set_enetaddr("ethaddr", mac_addr);
455 }
456
457 #ifdef CONFIG_DRIVER_TI_CPSW
458 writel((GMII1_SEL_RMII | GMII2_SEL_RGMII | RGMII2_IDMODE), &cdev->miisel);
459 cpsw_slaves[1].phy_if = PHY_INTERFACE_MODE_RGMII;
460 rv = cpsw_register(&cpsw_data);
461 if (rv < 0)
462 printf("Error %d registering CPSW switch\n", rv);
463 else
464 n += rv;
465 #endif
466
467 /*
468 *
469 * CPSW RGMII Internal Delay Mode is not supported in all PVT
470 * operating points. So we must set the TX clock delay feature
471 * in the AR8051 PHY. Since we only support a single ethernet
472 * device in U-Boot, we only do this for the first instance.
473 */
474 #define AR8051_PHY_DEBUG_ADDR_REG 0x1d
475 #define AR8051_PHY_DEBUG_DATA_REG 0x1e
476 #define AR8051_DEBUG_RGMII_CLK_DLY_REG 0x5
477 #define AR8051_RGMII_TX_CLK_DLY 0x100
478 const char *devname;
479 devname = miiphy_get_current_dev();
480
481 miiphy_write(devname, 0x7, AR8051_PHY_DEBUG_ADDR_REG,
482 AR8051_DEBUG_RGMII_CLK_DLY_REG);
483 miiphy_write(devname, 0x7, AR8051_PHY_DEBUG_DATA_REG,
484 AR8051_RGMII_TX_CLK_DLY);
485 #endif
486 return n;
487 }
488 #endif
489