1 /*
2  * (C) Copyright 2011
3  * Logic Product Development <www.logicpd.com>
4  *
5  * Author :
6  *	Peter Barada <peter.barada@logicpd.com>
7  *
8  * Derived from Beagle Board and 3430 SDP code by
9  *	Richard Woodruff <r-woodruff2@ti.com>
10  *	Syed Mohammed Khasim <khasim@ti.com>
11  *
12  * SPDX-License-Identifier:	GPL-2.0+
13  */
14 #include <common.h>
15 #include <dm.h>
16 #include <ns16550.h>
17 #include <netdev.h>
18 #include <flash.h>
19 #include <nand.h>
20 #include <i2c.h>
21 #include <twl4030.h>
22 #include <asm/io.h>
23 #include <asm/arch/mmc_host_def.h>
24 #include <asm/arch/mux.h>
25 #include <asm/arch/mem.h>
26 #include <asm/arch/sys_proto.h>
27 #include <asm/gpio.h>
28 #include <asm/mach-types.h>
29 #include <linux/mtd/nand.h>
30 #include <asm/omap_musb.h>
31 #include <linux/errno.h>
32 #include <linux/usb/ch9.h>
33 #include <linux/usb/gadget.h>
34 #include <linux/usb/musb.h>
35 #include "omap3logic.h"
36 #ifdef CONFIG_USB_EHCI_HCD
37 #include <usb.h>
38 #include <asm/ehci-omap.h>
39 #endif
40 
41 DECLARE_GLOBAL_DATA_PTR;
42 
43 /* This is only needed until SPL gets OF support */
44 #ifdef CONFIG_SPL_BUILD
45 static const struct ns16550_platdata omap3logic_serial = {
46 	.base = OMAP34XX_UART1,
47 	.reg_shift = 2,
48 	.clock = V_NS16550_CLK,
49 	.fcr = UART_FCR_DEFVAL,
50 };
51 
52 U_BOOT_DEVICE(omap3logic_uart) = {
53 	"ns16550_serial",
54 	&omap3logic_serial
55 };
56 #endif
57 
58 /*
59  * two dimensional array of strucures containining board name and Linux
60  * machine IDs; row it selected based on CPU column is slected based
61  * on hsusb0_data5 pin having a pulldown resistor
62  */
63 static struct board_id {
64 	char *name;
65 	int machine_id;
66 	char *fdtfile;
67 } boards[2][2] = {
68 	{
69 		{
70 			.name		= "OMAP35xx SOM LV",
71 			.machine_id	= MACH_TYPE_OMAP3530_LV_SOM,
72 			.fdtfile	= "logicpd-som-lv-35xx-devkit.dtb",
73 		},
74 		{
75 			.name		= "OMAP35xx Torpedo",
76 			.machine_id	= MACH_TYPE_OMAP3_TORPEDO,
77 			.fdtfile	= "logicpd-torpedo-35xx-devkit.dtb",
78 		},
79 	},
80 	{
81 		{
82 			.name		= "DM37xx SOM LV",
83 			.fdtfile	= "logicpd-som-lv-37xx-devkit.dtb",
84 		},
85 		{
86 			.name		= "DM37xx Torpedo",
87 			.fdtfile	= "logicpd-torpedo-37xx-devkit.dtb",
88 		},
89 	},
90 };
91 
92 #ifdef CONFIG_SPL_OS_BOOT
93 int spl_start_uboot(void)
94 {
95 	/* break into full u-boot on 'c' */
96 	return serial_tstc() && serial_getc() == 'c';
97 }
98 #endif
99 
100 #if defined(CONFIG_SPL_BUILD)
101 /*
102  * Routine: get_board_mem_timings
103  * Description: If we use SPL then there is no x-loader nor config header
104  * so we have to setup the DDR timings ourself on the first bank.  This
105  * provides the timing values back to the function that configures
106  * the memory.
107  */
108 void get_board_mem_timings(struct board_sdrc_timings *timings)
109 {
110 	timings->mr = MICRON_V_MR_165;
111 	/* 256MB DDR */
112 	timings->mcfg = MICRON_V_MCFG_200(256 << 20);
113 	timings->ctrla = MICRON_V_ACTIMA_200;
114 	timings->ctrlb = MICRON_V_ACTIMB_200;
115 	timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
116 }
117 #endif
118 
119 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
120 static struct musb_hdrc_config musb_config = {
121 	.multipoint     = 1,
122 	.dyn_fifo       = 1,
123 	.num_eps        = 16,
124 	.ram_bits       = 12,
125 };
126 
127 static struct omap_musb_board_data musb_board_data = {
128 	.interface_type	= MUSB_INTERFACE_ULPI,
129 };
130 
131 static struct musb_hdrc_platform_data musb_plat = {
132 #if defined(CONFIG_USB_MUSB_HOST)
133 	.mode           = MUSB_HOST,
134 #elif defined(CONFIG_USB_MUSB_GADGET)
135 	.mode		= MUSB_PERIPHERAL,
136 #else
137 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
138 #endif
139 	.config         = &musb_config,
140 	.power          = 100,
141 	.platform_ops	= &omap2430_ops,
142 	.board_data	= &musb_board_data,
143 };
144 #endif
145 
146 #if defined(CONFIG_USB_EHCI_HCD) && !defined(CONFIG_SPL_BUILD)
147 /* Call usb_stop() before starting the kernel */
148 void show_boot_progress(int val)
149 {
150 	if (val == BOOTSTAGE_ID_RUN_OS)
151 		usb_stop();
152 }
153 
154 static struct omap_usbhs_board_data usbhs_bdata = {
155 	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
156 	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
157 	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
158 };
159 
160 int ehci_hcd_init(int index, enum usb_init_type init,
161 		struct ehci_hccr **hccr, struct ehci_hcor **hcor)
162 {
163 	return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
164 }
165 
166 int ehci_hcd_stop(int index)
167 {
168 	return omap_ehci_hcd_stop();
169 }
170 
171 #endif /* CONFIG_USB_EHCI_HCD */
172 
173 
174 /*
175  * Routine: misc_init_r
176  * Description: Configure board specific parts
177  */
178 int misc_init_r(void)
179 {
180 	twl4030_power_init();
181 	omap_die_id_display();
182 
183 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
184 	musb_register(&musb_plat, &musb_board_data, (void *)MUSB_BASE);
185 #endif
186 
187 	return 0;
188 }
189 
190 /*
191  * BOARD_ID_GPIO - GPIO of pin with optional pulldown resistor on SOM LV
192  */
193 #define BOARD_ID_GPIO	189 /* hsusb0_data5 pin */
194 
195 /*
196  * Routine: board_init
197  * Description: Early hardware init.
198  */
199 int board_init(void)
200 {
201 	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
202 
203 	/* boot param addr */
204 	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
205 
206 	return 0;
207 }
208 
209 #ifdef CONFIG_BOARD_LATE_INIT
210 int board_late_init(void)
211 {
212 	struct board_id *board;
213 	unsigned int val;
214 
215 	/*
216 	 * To identify between a SOM LV and Torpedo module,
217 	 * a pulldown resistor is on hsusb0_data5 for the SOM LV module.
218 	 * Drive the pin (and let it soak), then read it back.
219 	 * If the pin is still high its a Torpedo.  If low its a SOM LV
220 	 */
221 
222 	/* Mux hsusb0_data5 as a GPIO */
223 	MUX_VAL(CP(HSUSB0_DATA5),	(IEN  | PTD | DIS | M4));
224 
225 	if (gpio_request(BOARD_ID_GPIO, "husb0_data5.gpio_189") == 0) {
226 
227 		/*
228 		 * Drive BOARD_ID_GPIO - the pulldown resistor on the SOM LV
229 		 * will drain the voltage.
230 		 */
231 		gpio_direction_output(BOARD_ID_GPIO, 0);
232 		gpio_set_value(BOARD_ID_GPIO, 1);
233 
234 		/* Let it soak for a bit */
235 		sdelay(0x100);
236 
237 		/*
238 		 * Read state of BOARD_ID_GPIO as an input and if its set.
239 		 * If so the board is a Torpedo
240 		 */
241 		gpio_direction_input(BOARD_ID_GPIO);
242 		val = gpio_get_value(BOARD_ID_GPIO);
243 		gpio_free(BOARD_ID_GPIO);
244 
245 		board = &boards[!!(get_cpu_family() == CPU_OMAP36XX)][!!val];
246 		printf("Board: %s\n", board->name);
247 
248 		/* Set the machine_id passed to Linux */
249 		if (board->machine_id)
250 			gd->bd->bi_arch_number = board->machine_id;
251 
252 		/* If the user has not set fdtimage, set the default */
253 		if (!env_get("fdtimage"))
254 			env_set("fdtimage", board->fdtfile);
255 	}
256 
257 	/* restore hsusb0_data5 pin as hsusb0_data5 */
258 	MUX_VAL(CP(HSUSB0_DATA5),	(IEN  | PTD | DIS | M0));
259 	return 0;
260 }
261 #endif
262 
263 #if defined(CONFIG_MMC)
264 int board_mmc_init(bd_t *bis)
265 {
266 	return omap_mmc_init(0, 0, 0, -1, -1);
267 }
268 #endif
269 
270 #if defined(CONFIG_MMC)
271 void board_mmc_power_init(void)
272 {
273 	twl4030_power_mmc_init(0);
274 }
275 #endif
276 
277 #ifdef CONFIG_SMC911X
278 /* GPMC CS1 settings for Logic SOM LV/Torpedo LAN92xx Ethernet chip */
279 static const u32 gpmc_lan92xx_config[] = {
280 	NET_LAN92XX_GPMC_CONFIG1,
281 	NET_LAN92XX_GPMC_CONFIG2,
282 	NET_LAN92XX_GPMC_CONFIG3,
283 	NET_LAN92XX_GPMC_CONFIG4,
284 	NET_LAN92XX_GPMC_CONFIG5,
285 	NET_LAN92XX_GPMC_CONFIG6,
286 };
287 
288 int board_eth_init(bd_t *bis)
289 {
290 	enable_gpmc_cs_config(gpmc_lan92xx_config, &gpmc_cfg->cs[1],
291 			CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
292 
293 	return smc911x_initialize(0, CONFIG_SMC911X_BASE);
294 }
295 #endif
296 
297 
298