1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2012  Renesas Solutions Corp.
4  */
5 
6 #include <common.h>
7 #include <environment.h>
8 #include <malloc.h>
9 #include <asm/processor.h>
10 #include <asm/io.h>
11 #include <asm/mmc.h>
12 #include <spi.h>
13 #include <spi_flash.h>
14 
15 int checkboard(void)
16 {
17 	puts("BOARD: SH7752 evaluation board (R0P7752C00000RZ)\n");
18 
19 	return 0;
20 }
21 
22 static void init_gpio(void)
23 {
24 	struct gpio_regs *gpio = GPIO_BASE;
25 	struct sermux_regs *sermux = SERMUX_BASE;
26 
27 	/* GPIO */
28 	writew(0x0000, &gpio->pacr);	/* GETHER */
29 	writew(0x0001, &gpio->pbcr);	/* INTC */
30 	writew(0x0000, &gpio->pccr);	/* PWMU, INTC */
31 	writew(0xeaff, &gpio->pecr);	/* GPIO */
32 	writew(0x0000, &gpio->pfcr);	/* WDT */
33 	writew(0x0000, &gpio->phcr);	/* SPI1 */
34 	writew(0x0000, &gpio->picr);	/* SDHI */
35 	writew(0x0003, &gpio->pkcr);	/* SerMux */
36 	writew(0x0000, &gpio->plcr);	/* SerMux */
37 	writew(0x0000, &gpio->pmcr);	/* RIIC */
38 	writew(0x0000, &gpio->pncr);	/* USB, SGPIO */
39 	writew(0x0000, &gpio->pocr);	/* SGPIO */
40 	writew(0xd555, &gpio->pqcr);	/* GPIO */
41 	writew(0x0000, &gpio->prcr);	/* RIIC */
42 	writew(0x0000, &gpio->pscr);	/* RIIC */
43 	writeb(0x00, &gpio->pudr);
44 	writew(0x5555, &gpio->pucr);	/* Debug LED */
45 	writew(0x0000, &gpio->pvcr);	/* RSPI */
46 	writew(0x0000, &gpio->pwcr);	/* EVC */
47 	writew(0x0000, &gpio->pxcr);	/* LBSC */
48 	writew(0x0000, &gpio->pycr);	/* LBSC */
49 	writew(0x0000, &gpio->pzcr);	/* eMMC */
50 	writew(0xfe00, &gpio->psel0);
51 	writew(0xff00, &gpio->psel3);
52 	writew(0x771f, &gpio->psel4);
53 	writew(0x00ff, &gpio->psel6);
54 	writew(0xfc00, &gpio->psel7);
55 
56 	writeb(0x10, &sermux->smr0);	/* SMR0: SerMux mode 0 */
57 }
58 
59 static void init_usb_phy(void)
60 {
61 	struct usb_common_regs *common0 = USB0_COMMON_BASE;
62 	struct usb_common_regs *common1 = USB1_COMMON_BASE;
63 	struct usb0_phy_regs *phy = USB0_PHY_BASE;
64 	struct usb1_port_regs *port = USB1_PORT_BASE;
65 	struct usb1_alignment_regs *align = USB1_ALIGNMENT_BASE;
66 
67 	writew(0x0100, &phy->reset);		/* set reset */
68 	/* port0 = USB0, port1 = USB1 */
69 	writew(0x0002, &phy->portsel);
70 	writel(0x0001, &port->port1sel);	/* port1 = Host */
71 	writew(0x0111, &phy->reset);		/* clear reset */
72 
73 	writew(0x4000, &common0->suspmode);
74 	writew(0x4000, &common1->suspmode);
75 
76 #if defined(__LITTLE_ENDIAN)
77 	writel(0x00000000, &align->ehcidatac);
78 	writel(0x00000000, &align->ohcidatac);
79 #endif
80 }
81 
82 static void init_gether_mdio(void)
83 {
84 	struct gpio_regs *gpio = GPIO_BASE;
85 
86 	writew(readw(&gpio->pgcr) | 0x0004, &gpio->pgcr);
87 	writeb(readb(&gpio->pgdr) | 0x02, &gpio->pgdr);	/* Use ET0-MDIO */
88 }
89 
90 static void set_mac_to_sh_giga_eth_register(int channel, char *mac_string)
91 {
92 	struct ether_mac_regs *ether;
93 	unsigned char mac[6];
94 	unsigned long val;
95 
96 	eth_parse_enetaddr(mac_string, mac);
97 
98 	if (!channel)
99 		ether = GETHER0_MAC_BASE;
100 	else
101 		ether = GETHER1_MAC_BASE;
102 
103 	val = (mac[0] << 24) | (mac[1] << 16) | (mac[2] << 8) | mac[3];
104 	writel(val, &ether->mahr);
105 	val = (mac[4] << 8) | mac[5];
106 	writel(val, &ether->malr);
107 }
108 
109 /*****************************************************************
110  * This PMB must be set on this timing. The lowlevel_init is run on
111  * Area 0(phys 0x00000000), so we have to map it.
112  *
113  * The new PMB table is following:
114  * ent	virt		phys		v	sz	c	wt
115  * 0	0xa0000000	0x40000000	1	128M	0	1
116  * 1	0xa8000000	0x48000000	1	128M	0	1
117  * 2	0xb0000000	0x50000000	1	128M	0	1
118  * 3	0xb8000000	0x58000000	1	128M	0	1
119  * 4	0x80000000	0x40000000	1	128M	1	1
120  * 5	0x88000000	0x48000000	1	128M	1	1
121  * 6	0x90000000	0x50000000	1	128M	1	1
122  * 7	0x98000000	0x58000000	1	128M	1	1
123  */
124 static void set_pmb_on_board_init(void)
125 {
126 	struct mmu_regs *mmu = MMU_BASE;
127 
128 	/* clear ITLB */
129 	writel(0x00000004, &mmu->mmucr);
130 
131 	/* delete PMB for SPIBOOT */
132 	writel(0, PMB_ADDR_BASE(0));
133 	writel(0, PMB_DATA_BASE(0));
134 
135 	/* add PMB for SDRAM(0x40000000 - 0x47ffffff) */
136 	/*			ppn  ub v s1 s0  c  wt */
137 	writel(mk_pmb_addr_val(0xa0), PMB_ADDR_BASE(0));
138 	writel(mk_pmb_data_val(0x40, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(0));
139 	writel(mk_pmb_addr_val(0xb0), PMB_ADDR_BASE(2));
140 	writel(mk_pmb_data_val(0x50, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(2));
141 	writel(mk_pmb_addr_val(0xb8), PMB_ADDR_BASE(3));
142 	writel(mk_pmb_data_val(0x58, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(3));
143 	writel(mk_pmb_addr_val(0x80), PMB_ADDR_BASE(4));
144 	writel(mk_pmb_data_val(0x40, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(4));
145 	writel(mk_pmb_addr_val(0x90), PMB_ADDR_BASE(6));
146 	writel(mk_pmb_data_val(0x50, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(6));
147 	writel(mk_pmb_addr_val(0x98), PMB_ADDR_BASE(7));
148 	writel(mk_pmb_data_val(0x58, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(7));
149 }
150 
151 int board_init(void)
152 {
153 	init_gpio();
154 	set_pmb_on_board_init();
155 
156 	init_usb_phy();
157 	init_gether_mdio();
158 
159 	return 0;
160 }
161 
162 int board_mmc_init(bd_t *bis)
163 {
164 	struct gpio_regs *gpio = GPIO_BASE;
165 
166 	writew(readw(&gpio->pgcr) | 0x0040, &gpio->pgcr);
167 	writeb(readb(&gpio->pgdr) & ~0x08, &gpio->pgdr); /* Reset */
168 	udelay(1);
169 	writeb(readb(&gpio->pgdr) | 0x08, &gpio->pgdr);	/* Release reset */
170 	udelay(200);
171 
172 	return mmcif_mmc_init();
173 }
174 
175 static int get_sh_eth_mac_raw(unsigned char *buf, int size)
176 {
177 	struct spi_flash *spi;
178 	int ret;
179 
180 	spi = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
181 	if (spi == NULL) {
182 		printf("%s: spi_flash probe failed.\n", __func__);
183 		return 1;
184 	}
185 
186 	ret = spi_flash_read(spi, SH7752EVB_ETHERNET_MAC_BASE, size, buf);
187 	if (ret) {
188 		printf("%s: spi_flash read failed.\n", __func__);
189 		spi_flash_free(spi);
190 		return 1;
191 	}
192 	spi_flash_free(spi);
193 
194 	return 0;
195 }
196 
197 static int get_sh_eth_mac(int channel, char *mac_string, unsigned char *buf)
198 {
199 	memcpy(mac_string, &buf[channel * (SH7752EVB_ETHERNET_MAC_SIZE + 1)],
200 		SH7752EVB_ETHERNET_MAC_SIZE);
201 	mac_string[SH7752EVB_ETHERNET_MAC_SIZE] = 0x00;	/* terminate */
202 
203 	return 0;
204 }
205 
206 static void init_ethernet_mac(void)
207 {
208 	char mac_string[64];
209 	char env_string[64];
210 	int i;
211 	unsigned char *buf;
212 
213 	buf = malloc(256);
214 	if (!buf) {
215 		printf("%s: malloc failed.\n", __func__);
216 		return;
217 	}
218 	get_sh_eth_mac_raw(buf, 256);
219 
220 	/* Gigabit Ethernet */
221 	for (i = 0; i < SH7752EVB_ETHERNET_NUM_CH; i++) {
222 		get_sh_eth_mac(i, mac_string, buf);
223 		if (i == 0)
224 			env_set("ethaddr", mac_string);
225 		else {
226 			sprintf(env_string, "eth%daddr", i);
227 			env_set(env_string, mac_string);
228 		}
229 		set_mac_to_sh_giga_eth_register(i, mac_string);
230 	}
231 
232 	free(buf);
233 }
234 
235 int board_late_init(void)
236 {
237 	init_ethernet_mac();
238 
239 	return 0;
240 }
241 
242 int do_write_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
243 {
244 	int i, ret;
245 	char mac_string[256];
246 	struct spi_flash *spi;
247 	unsigned char *buf;
248 
249 	if (argc != 3) {
250 		buf = malloc(256);
251 		if (!buf) {
252 			printf("%s: malloc failed.\n", __func__);
253 			return 1;
254 		}
255 
256 		get_sh_eth_mac_raw(buf, 256);
257 
258 		/* print current MAC address */
259 		for (i = 0; i < SH7752EVB_ETHERNET_NUM_CH; i++) {
260 			get_sh_eth_mac(i, mac_string, buf);
261 			printf("GETHERC ch%d = %s\n", i, mac_string);
262 		}
263 		free(buf);
264 		return 0;
265 	}
266 
267 	/* new setting */
268 	memset(mac_string, 0xff, sizeof(mac_string));
269 	sprintf(mac_string, "%s\t%s",
270 		argv[1], argv[2]);
271 
272 	/* write MAC data to SPI rom */
273 	spi = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
274 	if (!spi) {
275 		printf("%s: spi_flash probe failed.\n", __func__);
276 		return 1;
277 	}
278 
279 	ret = spi_flash_erase(spi, SH7752EVB_ETHERNET_MAC_BASE_SPI,
280 				SH7752EVB_SPI_SECTOR_SIZE);
281 	if (ret) {
282 		printf("%s: spi_flash erase failed.\n", __func__);
283 		return 1;
284 	}
285 
286 	ret = spi_flash_write(spi, SH7752EVB_ETHERNET_MAC_BASE_SPI,
287 				sizeof(mac_string), mac_string);
288 	if (ret) {
289 		printf("%s: spi_flash write failed.\n", __func__);
290 		spi_flash_free(spi);
291 		return 1;
292 	}
293 	spi_flash_free(spi);
294 
295 	puts("The writing of the MAC address to SPI ROM was completed.\n");
296 
297 	return 0;
298 }
299 
300 U_BOOT_CMD(
301 	write_mac,	3,	1,	do_write_mac,
302 	"write MAC address for GETHERC",
303 	"[GETHERC ch0] [GETHERC ch1]\n"
304 );
305