1 /*
2  * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
3  *
4  * Based on da850evm.c. Original Copyrights follow:
5  *
6  * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
7  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
8  *
9  * SPDX-License-Identifier:	GPL-2.0+
10  */
11 
12 #include <common.h>
13 #include <i2c.h>
14 #include <net.h>
15 #include <netdev.h>
16 #include <spi.h>
17 #include <spi_flash.h>
18 #include <asm/arch/hardware.h>
19 #include <asm/ti-common/davinci_nand.h>
20 #include <asm/io.h>
21 #include <linux/errno.h>
22 #include <asm/arch/davinci_misc.h>
23 #ifdef CONFIG_MMC_DAVINCI
24 #include <mmc.h>
25 #include <asm/arch/sdmmc_defs.h>
26 #endif
27 
28 DECLARE_GLOBAL_DATA_PTR;
29 
30 #define pinmux(x)	(&davinci_syscfg_regs->pinmux[x])
31 
32 #ifdef CONFIG_MMC_DAVINCI
33 /* MMC0 pin muxer settings */
34 const struct pinmux_config mmc0_pins[] = {
35 	/* GP0[11] is required for SD to work on Rev 3 EVMs */
36 	{ pinmux(0),  8, 4 },	/* GP0[11] */
37 	{ pinmux(10), 2, 0 },	/* MMCSD0_CLK */
38 	{ pinmux(10), 2, 1 },	/* MMCSD0_CMD */
39 	{ pinmux(10), 2, 2 },	/* MMCSD0_DAT_0 */
40 	{ pinmux(10), 2, 3 },	/* MMCSD0_DAT_1 */
41 	{ pinmux(10), 2, 4 },	/* MMCSD0_DAT_2 */
42 	{ pinmux(10), 2, 5 },	/* MMCSD0_DAT_3 */
43 	/* LCDK supports only 4-bit mode, remaining pins are not configured */
44 };
45 #endif
46 
47 /* UART pin muxer settings */
48 static const struct pinmux_config uart_pins[] = {
49 	{ pinmux(0), 4, 6 },
50 	{ pinmux(0), 4, 7 },
51 	{ pinmux(4), 2, 4 },
52 	{ pinmux(4), 2, 5 }
53 };
54 
55 #ifdef CONFIG_DRIVER_TI_EMAC
56 static const struct pinmux_config emac_pins[] = {
57 	{ pinmux(2), 8, 1 },
58 	{ pinmux(2), 8, 2 },
59 	{ pinmux(2), 8, 3 },
60 	{ pinmux(2), 8, 4 },
61 	{ pinmux(2), 8, 5 },
62 	{ pinmux(2), 8, 6 },
63 	{ pinmux(2), 8, 7 },
64 	{ pinmux(3), 8, 0 },
65 	{ pinmux(3), 8, 1 },
66 	{ pinmux(3), 8, 2 },
67 	{ pinmux(3), 8, 3 },
68 	{ pinmux(3), 8, 4 },
69 	{ pinmux(3), 8, 5 },
70 	{ pinmux(3), 8, 6 },
71 	{ pinmux(3), 8, 7 },
72 	{ pinmux(4), 8, 0 },
73 	{ pinmux(4), 8, 1 }
74 };
75 #endif /* CONFIG_DRIVER_TI_EMAC */
76 
77 /* I2C pin muxer settings */
78 static const struct pinmux_config i2c_pins[] = {
79 	{ pinmux(4), 2, 2 },
80 	{ pinmux(4), 2, 3 }
81 };
82 
83 #ifdef CONFIG_NAND_DAVINCI
84 const struct pinmux_config nand_pins[] = {
85 	{ pinmux(7), 1, 1 },
86 	{ pinmux(7), 1, 2 },
87 	{ pinmux(7), 1, 4 },
88 	{ pinmux(7), 1, 5 },
89 	{ pinmux(8), 1, 0 },
90 	{ pinmux(8), 1, 1 },
91 	{ pinmux(8), 1, 2 },
92 	{ pinmux(8), 1, 3 },
93 	{ pinmux(8), 1, 4 },
94 	{ pinmux(8), 1, 5 },
95 	{ pinmux(8), 1, 6 },
96 	{ pinmux(8), 1, 7 },
97 	{ pinmux(9), 1, 0 },
98 	{ pinmux(9), 1, 1 },
99 	{ pinmux(9), 1, 2 },
100 	{ pinmux(9), 1, 3 },
101 	{ pinmux(9), 1, 4 },
102 	{ pinmux(9), 1, 5 },
103 	{ pinmux(9), 1, 6 },
104 	{ pinmux(9), 1, 7 },
105 	{ pinmux(12), 1, 5 },
106 	{ pinmux(12), 1, 6 }
107 };
108 
109 #endif
110 
111 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
112 #define HAS_RMII 1
113 #else
114 #define HAS_RMII 0
115 #endif
116 
117 const struct pinmux_resource pinmuxes[] = {
118 	PINMUX_ITEM(uart_pins),
119 	PINMUX_ITEM(i2c_pins),
120 #ifdef CONFIG_NAND_DAVINCI
121 	PINMUX_ITEM(nand_pins),
122 #endif
123 };
124 
125 const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
126 
127 const struct lpsc_resource lpsc[] = {
128 	{ DAVINCI_LPSC_AEMIF },	/* NAND, NOR */
129 	{ DAVINCI_LPSC_SPI1 },	/* Serial Flash */
130 	{ DAVINCI_LPSC_EMAC },	/* image download */
131 	{ DAVINCI_LPSC_UART2 },	/* console */
132 	{ DAVINCI_LPSC_GPIO },
133 #ifdef CONFIG_MMC_DAVINCI
134 	{ DAVINCI_LPSC_MMC_SD },
135 #endif
136 };
137 
138 const int lpsc_size = ARRAY_SIZE(lpsc);
139 
140 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
141 #define CONFIG_DA850_EVM_MAX_CPU_CLK	456000000
142 #endif
143 
144 /*
145  * get_board_rev() - setup to pass kernel board revision information
146  * Returns:
147  * bit[0-3]	Maximum cpu clock rate supported by onboard SoC
148  *		0000b - 300 MHz
149  *		0001b - 372 MHz
150  *		0010b - 408 MHz
151  *		0011b - 456 MHz
152  */
153 u32 get_board_rev(void)
154 {
155 	return 0;
156 }
157 
158 int board_early_init_f(void)
159 {
160 	/*
161 	 * Power on required peripherals
162 	 * ARM does not have access by default to PSC0 and PSC1
163 	 * assuming here that the DSP bootloader has set the IOPU
164 	 * such that PSC access is available to ARM
165 	 */
166 	if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
167 		return 1;
168 
169 	return 0;
170 }
171 
172 int board_init(void)
173 {
174 #ifndef CONFIG_USE_IRQ
175 	irq_init();
176 #endif
177 
178 	/* arch number of the board */
179 	gd->bd->bi_arch_number = MACH_TYPE_OMAPL138_LCDK;
180 
181 	/* address of boot parameters */
182 	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
183 
184 
185 	/* setup the SUSPSRC for ARM to control emulation suspend */
186 	writel(readl(&davinci_syscfg_regs->suspsrc) &
187 	       ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
188 		 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
189 		 DAVINCI_SYSCFG_SUSPSRC_UART2),
190 	       &davinci_syscfg_regs->suspsrc);
191 
192 	/* configure pinmux settings */
193 	if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
194 		return 1;
195 
196 #ifdef CONFIG_NAND_DAVINCI
197 	/*
198 	 * NAND CS setup - cycle counts based on da850evm NAND timings in the
199 	 * Linux kernel @ 25MHz EMIFA
200 	 */
201 	writel((DAVINCI_ABCR_WSETUP(15) |
202 		DAVINCI_ABCR_WSTROBE(63) |
203 		DAVINCI_ABCR_WHOLD(7) |
204 		DAVINCI_ABCR_RSETUP(15) |
205 		DAVINCI_ABCR_RSTROBE(63) |
206 		DAVINCI_ABCR_RHOLD(7) |
207 		DAVINCI_ABCR_TA(3) |
208 		DAVINCI_ABCR_ASIZE_16BIT),
209 	       &davinci_emif_regs->ab2cr); /* CS3 */
210 #endif
211 
212 
213 #ifdef CONFIG_MMC_DAVINCI
214 	if (davinci_configure_pin_mux(mmc0_pins, ARRAY_SIZE(mmc0_pins)) != 0)
215 		return 1;
216 #endif
217 
218 #ifdef CONFIG_DRIVER_TI_EMAC
219 	if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
220 		return 1;
221 	davinci_emac_mii_mode_sel(HAS_RMII);
222 #endif /* CONFIG_DRIVER_TI_EMAC */
223 
224 	/* enable the console UART */
225 	writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
226 		DAVINCI_UART_PWREMU_MGMT_UTRST),
227 	       &davinci_uart2_ctrl_regs->pwremu_mgmt);
228 
229 	return 0;
230 }
231 
232 #ifdef CONFIG_DRIVER_TI_EMAC
233 
234 /*
235  * Initializes on-board ethernet controllers.
236  */
237 int board_eth_init(bd_t *bis)
238 {
239 	if (!davinci_emac_initialize()) {
240 		printf("Error: Ethernet init failed!\n");
241 		return -1;
242 	}
243 
244 	return 0;
245 }
246 
247 #endif /* CONFIG_DRIVER_TI_EMAC */
248 
249 #define CFG_MAC_ADDR_SPI_BUS	0
250 #define CFG_MAC_ADDR_SPI_CS	0
251 #define CFG_MAC_ADDR_SPI_MAX_HZ	CONFIG_SF_DEFAULT_SPEED
252 #define CFG_MAC_ADDR_SPI_MODE	SPI_MODE_3
253 
254 #define CFG_MAC_ADDR_OFFSET	(flash->size - SZ_64K)
255 
256 static int  get_mac_addr(u8 *addr)
257 {
258 	/* Need to find a way to get MAC ADDRESS */
259 	return 0;
260 }
261 
262 void dsp_lpsc_on(unsigned domain, unsigned int id)
263 {
264 	dv_reg_p mdstat, mdctl, ptstat, ptcmd;
265 	struct davinci_psc_regs *psc_regs;
266 
267 	psc_regs = davinci_psc0_regs;
268 	mdstat = &psc_regs->psc0.mdstat[id];
269 	mdctl = &psc_regs->psc0.mdctl[id];
270 	ptstat = &psc_regs->ptstat;
271 	ptcmd = &psc_regs->ptcmd;
272 
273 	while (*ptstat & (0x1 << domain))
274 		;
275 
276 	if ((*mdstat & 0x1f) == 0x03)
277 		return;                 /* Already on and enabled */
278 
279 	*mdctl |= 0x03;
280 
281 	*ptcmd = 0x1 << domain;
282 
283 	while (*ptstat & (0x1 << domain))
284 		;
285 	while ((*mdstat & 0x1f) != 0x03)
286 		;		/* Probably an overkill... */
287 }
288 
289 static void dspwake(void)
290 {
291 	unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE;
292 
293 	/* if the device is ARM only, return */
294 	if ((REG(CHIP_REV_ID_REG) & 0x3f) == 0x10)
295 		return;
296 
297 	if (!strcmp(getenv("dspwake"), "no"))
298 		return;
299 
300 	*resetvect++ = 0x1E000; /* DSP Idle */
301 	/* clear out the next 10 words as NOP */
302 	memset(resetvect, 0, sizeof(unsigned) * 10);
303 
304 	/* setup the DSP reset vector */
305 	REG(HOST1CFG) = DAVINCI_L3CBARAM_BASE;
306 
307 	dsp_lpsc_on(1, DAVINCI_LPSC_GEM);
308 	REG(PSC0_MDCTL + (15 * 4)) |= 0x100;
309 }
310 
311 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
312 /**
313  * rmii_hw_init
314  *
315  */
316 int rmii_hw_init(void)
317 {
318 	return 0;
319 }
320 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
321 
322 int misc_init_r(void)
323 {
324 	uint8_t tmp[20], addr[10];
325 
326 
327 	if (getenv("ethaddr") == NULL) {
328 		/* Read Ethernet MAC address from EEPROM */
329 		if (dvevm_read_mac_address(addr)) {
330 			/* Set Ethernet MAC address from EEPROM */
331 			davinci_sync_env_enetaddr(addr);
332 		} else {
333 			get_mac_addr(addr);
334 		}
335 
336 		if (!is_multicast_ethaddr(addr) && !is_zero_ethaddr(addr)) {
337 			sprintf((char *)tmp, "%02x:%02x:%02x:%02x:%02x:%02x",
338 				addr[0], addr[1], addr[2], addr[3], addr[4],
339 				addr[5]);
340 
341 			setenv("ethaddr", (char *)tmp);
342 		} else {
343 			printf("Invalid MAC address read.\n");
344 		}
345 	}
346 
347 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
348 	/* Select RMII fucntion through the expander */
349 	if (rmii_hw_init())
350 		printf("RMII hardware init failed!!!\n");
351 #endif
352 
353 	dspwake();
354 
355 	return 0;
356 }
357 
358 #ifdef CONFIG_MMC_DAVINCI
359 static struct davinci_mmc mmc_sd0 = {
360 	.reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
361 	.host_caps = MMC_MODE_4BIT,     /* DA850 supports only 4-bit SD/MMC */
362 	.voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
363 	.version = MMC_CTLR_VERSION_2,
364 };
365 
366 int board_mmc_init(bd_t *bis)
367 {
368 	mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
369 
370 	/* Add slot-0 to mmc subsystem */
371 	return davinci_mmc_init(bis, &mmc_sd0);
372 }
373 #endif
374