Merge git://git.denx.de/u-boot-samsung
[platform/kernel/u-boot.git] / board / samsung / common / board.c
1 /*
2  * (C) Copyright 2013 SAMSUNG Electronics
3  * Rajeshwari Shinde <rajeshwari.s@samsung.com>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <cros_ec.h>
10 #include <errno.h>
11 #include <fdtdec.h>
12 #include <spi.h>
13 #include <tmu.h>
14 #include <netdev.h>
15 #include <asm/io.h>
16 #include <asm/gpio.h>
17 #include <asm/arch/board.h>
18 #include <asm/arch/cpu.h>
19 #include <asm/arch/dwmmc.h>
20 #include <asm/arch/mmc.h>
21 #include <asm/arch/pinmux.h>
22 #include <asm/arch/power.h>
23 #include <asm/arch/system.h>
24 #include <asm/arch/sromc.h>
25 #include <lcd.h>
26 #include <i2c.h>
27 #include <samsung/misc.h>
28 #include <usb.h>
29
30 DECLARE_GLOBAL_DATA_PTR;
31
32 __weak int exynos_early_init_f(void)
33 {
34         return 0;
35 }
36
37 __weak int exynos_power_init(void)
38 {
39         return 0;
40 }
41
42 #if defined CONFIG_EXYNOS_TMU
43 /* Boot Time Thermal Analysis for SoC temperature threshold breach */
44 static void boot_temp_check(void)
45 {
46         int temp;
47
48         switch (tmu_monitor(&temp)) {
49         case TMU_STATUS_NORMAL:
50                 break;
51         case TMU_STATUS_TRIPPED:
52                 /*
53                  * Status TRIPPED ans WARNING means corresponding threshold
54                  * breach
55                  */
56                 puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
57                 set_ps_hold_ctrl();
58                 hang();
59                 break;
60         case TMU_STATUS_WARNING:
61                 puts("EXYNOS_TMU: WARNING! Temperature very high\n");
62                 break;
63         case TMU_STATUS_INIT:
64                 /*
65                  * TMU_STATUS_INIT means something is wrong with temperature
66                  * sensing and TMU status was changed back from NORMAL to INIT.
67                  */
68                 puts("EXYNOS_TMU: WARNING! Temperature sensing not done\n");
69                 break;
70         default:
71                 debug("EXYNOS_TMU: Unknown TMU state\n");
72         }
73 }
74 #endif
75
76 int board_init(void)
77 {
78         gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
79 #if defined CONFIG_EXYNOS_TMU
80         if (tmu_init(gd->fdt_blob) != TMU_STATUS_NORMAL) {
81                 debug("%s: Failed to init TMU\n", __func__);
82                 return -1;
83         }
84         boot_temp_check();
85 #endif
86 #ifdef CONFIG_TZSW_RESERVED_DRAM_SIZE
87         /* The last few MB of memory can be reserved for secure firmware */
88         ulong size = CONFIG_TZSW_RESERVED_DRAM_SIZE;
89
90         gd->ram_size -= size;
91         gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= size;
92 #endif
93         return exynos_init();
94 }
95
96 int dram_init(void)
97 {
98         unsigned int i;
99         u32 addr;
100
101         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
102                 addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
103                 gd->ram_size += get_ram_size((long *)addr, SDRAM_BANK_SIZE);
104         }
105         return 0;
106 }
107
108 void dram_init_banksize(void)
109 {
110         unsigned int i;
111         u32 addr, size;
112
113         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
114                 addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
115                 size = get_ram_size((long *)addr, SDRAM_BANK_SIZE);
116
117                 gd->bd->bi_dram[i].start = addr;
118                 gd->bd->bi_dram[i].size = size;
119         }
120 }
121
122 static int board_uart_init(void)
123 {
124         int err, uart_id, ret = 0;
125
126         for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) {
127                 err = exynos_pinmux_config(uart_id, PINMUX_FLAG_NONE);
128                 if (err) {
129                         debug("UART%d not configured\n",
130                               (uart_id - PERIPH_ID_UART0));
131                         ret |= err;
132                 }
133         }
134         return ret;
135 }
136
137 #ifdef CONFIG_BOARD_EARLY_INIT_F
138 int board_early_init_f(void)
139 {
140         int err;
141 #ifdef CONFIG_BOARD_TYPES
142         set_board_type();
143 #endif
144         err = board_uart_init();
145         if (err) {
146                 debug("UART init failed\n");
147                 return err;
148         }
149
150 #ifdef CONFIG_SYS_I2C_INIT_BOARD
151         board_i2c_init(gd->fdt_blob);
152 #endif
153
154 #if defined(CONFIG_OF_CONTROL) && defined(CONFIG_EXYNOS_FB)
155 /*
156  * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs
157  * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix, to reserve
158  * FB memory at a very early stage. So, we need to fill panel_info.vl_col,
159  * panel_info.vl_row and panel_info.vl_bpix before lcd_setmem() is called.
160  */
161         err = exynos_lcd_early_init(gd->fdt_blob);
162         if (err) {
163                 debug("LCD early init failed\n");
164                 return err;
165         }
166 #endif
167
168         return exynos_early_init_f();
169 }
170 #endif
171
172 #if defined(CONFIG_POWER) || defined(CONFIG_DM_PMIC)
173 int power_init_board(void)
174 {
175         set_ps_hold_ctrl();
176
177         return exynos_power_init();
178 }
179 #endif
180
181 #ifdef CONFIG_OF_CONTROL
182 #ifdef CONFIG_SMC911X
183 static int decode_sromc(const void *blob, struct fdt_sromc *config)
184 {
185         int err;
186         int node;
187
188         node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC);
189         if (node < 0) {
190                 debug("Could not find SROMC node\n");
191                 return node;
192         }
193
194         config->bank = fdtdec_get_int(blob, node, "bank", 0);
195         config->width = fdtdec_get_int(blob, node, "width", 2);
196
197         err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing,
198                         FDT_SROM_TIMING_COUNT);
199         if (err < 0) {
200                 debug("Could not decode SROMC configuration Error: %s\n",
201                       fdt_strerror(err));
202                 return -FDT_ERR_NOTFOUND;
203         }
204         return 0;
205 }
206 #endif
207
208 int board_eth_init(bd_t *bis)
209 {
210 #ifdef CONFIG_SMC911X
211         u32 smc_bw_conf, smc_bc_conf;
212         struct fdt_sromc config;
213         fdt_addr_t base_addr;
214         int node;
215
216         node = decode_sromc(gd->fdt_blob, &config);
217         if (node < 0) {
218                 debug("%s: Could not find sromc configuration\n", __func__);
219                 return 0;
220         }
221         node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215);
222         if (node < 0) {
223                 debug("%s: Could not find lan9215 configuration\n", __func__);
224                 return 0;
225         }
226
227         /* We now have a node, so any problems from now on are errors */
228         base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg");
229         if (base_addr == FDT_ADDR_T_NONE) {
230                 debug("%s: Could not find lan9215 address\n", __func__);
231                 return -1;
232         }
233
234         /* Ethernet needs data bus width of 16 bits */
235         if (config.width != 2) {
236                 debug("%s: Unsupported bus width %d\n", __func__,
237                       config.width);
238                 return -1;
239         }
240         smc_bw_conf = SROMC_DATA16_WIDTH(config.bank)
241                         | SROMC_BYTE_ENABLE(config.bank);
242
243         smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS])   |
244                         SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) |
245                         SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) |
246                         SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) |
247                         SROMC_BC_TAH(config.timing[FDT_SROM_TAH])   |
248                         SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) |
249                         SROMC_BC_PMC(config.timing[FDT_SROM_PMC]);
250
251         /* Select and configure the SROMC bank */
252         exynos_pinmux_config(PERIPH_ID_SROMC, config.bank);
253         s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf);
254         return smc911x_initialize(0, base_addr);
255 #endif
256         return 0;
257 }
258
259 #ifdef CONFIG_GENERIC_MMC
260 static int init_mmc(void)
261 {
262 #ifdef CONFIG_SDHCI
263         return exynos_mmc_init(gd->fdt_blob);
264 #else
265         return 0;
266 #endif
267 }
268
269 static int init_dwmmc(void)
270 {
271 #ifdef CONFIG_DWMMC
272         return exynos_dwmmc_init(gd->fdt_blob);
273 #else
274         return 0;
275 #endif
276 }
277
278 int board_mmc_init(bd_t *bis)
279 {
280         int ret;
281
282         if (get_boot_mode() == BOOT_MODE_SD) {
283                 ret = init_mmc();
284                 ret |= init_dwmmc();
285         } else {
286                 ret = init_dwmmc();
287                 ret |= init_mmc();
288         }
289
290         if (ret)
291                 debug("mmc init failed\n");
292
293         return ret;
294 }
295 #endif
296
297 #ifdef CONFIG_DISPLAY_BOARDINFO
298 int checkboard(void)
299 {
300         const char *board_info;
301
302         board_info = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
303         printf("Board: %s\n", board_info ? board_info : "unknown");
304 #ifdef CONFIG_BOARD_TYPES
305         board_info = get_board_type();
306
307         printf("Model: %s\n", board_info ? board_info : "unknown");
308 #endif
309         return 0;
310 }
311 #endif
312 #endif /* CONFIG_OF_CONTROL */
313
314 #ifdef CONFIG_BOARD_LATE_INIT
315 int board_late_init(void)
316 {
317         stdio_print_current_devices();
318
319         if (cros_ec_get_error()) {
320                 /* Force console on */
321                 gd->flags &= ~GD_FLG_SILENT;
322
323                 printf("cros-ec communications failure %d\n",
324                        cros_ec_get_error());
325                 puts("\nPlease reset with Power+Refresh\n\n");
326                 panic("Cannot init cros-ec device");
327                 return -1;
328         }
329         return 0;
330 }
331 #endif
332
333 #ifdef CONFIG_MISC_INIT_R
334 int misc_init_r(void)
335 {
336 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
337         set_board_info();
338 #endif
339 #ifdef CONFIG_LCD_MENU
340         keys_init();
341         check_boot_mode();
342 #endif
343 #ifdef CONFIG_CMD_BMP
344         if (panel_info.logo_on)
345                 draw_logo();
346 #endif
347         return 0;
348 }
349 #endif
350
351 void reset_misc(void)
352 {
353         struct gpio_desc gpio = {};
354         int node;
355
356         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
357                         "samsung,emmc-reset");
358         if (node < 0)
359                 return;
360
361         gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio,
362                                    GPIOD_IS_OUT);
363
364         if (dm_gpio_is_valid(&gpio)) {
365                 /*
366                  * Reset eMMC
367                  *
368                  * FIXME: Need to optimize delay time. Minimum 1usec pulse is
369                  *        required by 'JEDEC Standard No.84-A441' (eMMC)
370                  *        document but real delay time is expected to greater
371                  *        than 1usec.
372                  */
373                 dm_gpio_set_value(&gpio, 0);
374                 mdelay(10);
375                 dm_gpio_set_value(&gpio, 1);
376         }
377 }
378
379 int board_usb_cleanup(int index, enum usb_init_type init)
380 {
381         return 0;
382 }