1 /*
2  * Copyright (C) 2011  Renesas Solutions Corp.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.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: R0P7757LC0030RL board\n");
18 
19 	return 0;
20 }
21 
22 static void init_gctrl(void)
23 {
24 	struct gctrl_regs *gctrl = GCTRL_BASE;
25 	unsigned long graofst;
26 
27 	graofst = (SH7757LCR_SDRAM_PHYS_TOP + SH7757LCR_GRA_OFFSET) >> 24;
28 	writel(graofst | 0x20000f00, &gctrl->gracr3);
29 }
30 
31 static int init_pcie_bridge_from_spi(void *buf, size_t size)
32 {
33 	struct spi_flash *spi;
34 	int ret;
35 	unsigned long pcie_addr;
36 
37 	spi = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
38 	if (!spi) {
39 		printf("%s: spi_flash probe error.\n", __func__);
40 		return 1;
41 	}
42 
43 	if (is_sh7757_b0())
44 		pcie_addr = SH7757LCR_PCIEBRG_ADDR_B0;
45 	else
46 		pcie_addr = SH7757LCR_PCIEBRG_ADDR;
47 
48 	ret = spi_flash_read(spi, pcie_addr, size, buf);
49 	if (ret) {
50 		printf("%s: spi_flash read error.\n", __func__);
51 		spi_flash_free(spi);
52 		return 1;
53 	}
54 	spi_flash_free(spi);
55 
56 	return 0;
57 }
58 
59 static void init_pcie_bridge(void)
60 {
61 	struct pciebrg_regs *pciebrg = PCIEBRG_BASE;
62 	struct pcie_setup_regs *pcie_setup = PCIE_SETUP_BASE;
63 	int i;
64 	unsigned char *data;
65 	unsigned short tmp;
66 	unsigned long pcie_size;
67 
68 	if (!(readw(&pciebrg->ctrl_h8s) & 0x0001))
69 		return;
70 
71 	if (is_sh7757_b0())
72 		pcie_size = SH7757LCR_PCIEBRG_SIZE_B0;
73 	else
74 		pcie_size = SH7757LCR_PCIEBRG_SIZE;
75 
76 	data = malloc(pcie_size);
77 	if (!data) {
78 		printf("%s: malloc error.\n", __func__);
79 		return;
80 	}
81 	if (init_pcie_bridge_from_spi(data, pcie_size)) {
82 		free(data);
83 		return;
84 	}
85 
86 	if (data[0] == 0xff && data[1] == 0xff && data[2] == 0xff &&
87 	    data[3] == 0xff) {
88 		free(data);
89 		printf("%s: skipped initialization\n", __func__);
90 		return;
91 	}
92 
93 	writew(0xa501, &pciebrg->ctrl_h8s);	/* reset */
94 	writew(0x0000, &pciebrg->cp_ctrl);
95 	writew(0x0000, &pciebrg->cp_addr);
96 
97 	for (i = 0; i < pcie_size; i += 2) {
98 		tmp = (data[i] << 8) | data[i + 1];
99 		writew(tmp, &pciebrg->cp_data);
100 	}
101 
102 	writew(0xa500, &pciebrg->ctrl_h8s);	/* start */
103 	if (!is_sh7757_b0())
104 		writel(0x00000001, &pcie_setup->pbictl3);
105 
106 	free(data);
107 }
108 
109 static void init_usb_phy(void)
110 {
111 	struct usb_common_regs *common0 = USB0_COMMON_BASE;
112 	struct usb_common_regs *common1 = USB1_COMMON_BASE;
113 	struct usb0_phy_regs *phy = USB0_PHY_BASE;
114 	struct usb1_port_regs *port = USB1_PORT_BASE;
115 	struct usb1_alignment_regs *align = USB1_ALIGNMENT_BASE;
116 
117 	writew(0x0100, &phy->reset);		/* set reset */
118 	/* port0 = USB0, port1 = USB1 */
119 	writew(0x0002, &phy->portsel);
120 	writel(0x0001, &port->port1sel);	/* port1 = Host */
121 	writew(0x0111, &phy->reset);		/* clear reset */
122 
123 	writew(0x4000, &common0->suspmode);
124 	writew(0x4000, &common1->suspmode);
125 
126 #if defined(__LITTLE_ENDIAN)
127 	writel(0x00000000, &align->ehcidatac);
128 	writel(0x00000000, &align->ohcidatac);
129 #endif
130 }
131 
132 static void set_mac_to_sh_eth_register(int channel, char *mac_string)
133 {
134 	struct ether_mac_regs *ether;
135 	unsigned char mac[6];
136 	unsigned long val;
137 
138 	eth_parse_enetaddr(mac_string, mac);
139 
140 	if (!channel)
141 		ether = ETHER0_MAC_BASE;
142 	else
143 		ether = ETHER1_MAC_BASE;
144 
145 	val = (mac[0] << 24) | (mac[1] << 16) | (mac[2] << 8) | mac[3];
146 	writel(val, &ether->mahr);
147 	val = (mac[4] << 8) | mac[5];
148 	writel(val, &ether->malr);
149 }
150 
151 static void set_mac_to_sh_giga_eth_register(int channel, char *mac_string)
152 {
153 	struct ether_mac_regs *ether;
154 	unsigned char mac[6];
155 	unsigned long val;
156 
157 	eth_parse_enetaddr(mac_string, mac);
158 
159 	if (!channel)
160 		ether = GETHER0_MAC_BASE;
161 	else
162 		ether = GETHER1_MAC_BASE;
163 
164 	val = (mac[0] << 24) | (mac[1] << 16) | (mac[2] << 8) | mac[3];
165 	writel(val, &ether->mahr);
166 	val = (mac[4] << 8) | mac[5];
167 	writel(val, &ether->malr);
168 }
169 
170 /*****************************************************************
171  * This PMB must be set on this timing. The lowlevel_init is run on
172  * Area 0(phys 0x00000000), so we have to map it.
173  *
174  * The new PMB table is following:
175  * ent	virt		phys		v	sz	c	wt
176  * 0	0xa0000000	0x40000000	1	128M	0	1
177  * 1	0xa8000000	0x48000000	1	128M	0	1
178  * 2	0xb0000000	0x50000000	1	128M	0	1
179  * 3	0xb8000000	0x58000000	1	128M	0	1
180  * 4	0x80000000	0x40000000	1	128M	1	1
181  * 5	0x88000000	0x48000000	1	128M	1	1
182  * 6	0x90000000	0x50000000	1	128M	1	1
183  * 7	0x98000000	0x58000000	1	128M	1	1
184  */
185 static void set_pmb_on_board_init(void)
186 {
187 	struct mmu_regs *mmu = MMU_BASE;
188 
189 	/* clear ITLB */
190 	writel(0x00000004, &mmu->mmucr);
191 
192 	/* delete PMB for SPIBOOT */
193 	writel(0, PMB_ADDR_BASE(0));
194 	writel(0, PMB_DATA_BASE(0));
195 
196 	/* add PMB for SDRAM(0x40000000 - 0x47ffffff) */
197 	/*			ppn  ub v s1 s0  c  wt */
198 	writel(mk_pmb_addr_val(0xa0), PMB_ADDR_BASE(0));
199 	writel(mk_pmb_data_val(0x40, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(0));
200 	writel(mk_pmb_addr_val(0xb0), PMB_ADDR_BASE(2));
201 	writel(mk_pmb_data_val(0x50, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(2));
202 	writel(mk_pmb_addr_val(0xb8), PMB_ADDR_BASE(3));
203 	writel(mk_pmb_data_val(0x58, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(3));
204 	writel(mk_pmb_addr_val(0x80), PMB_ADDR_BASE(4));
205 	writel(mk_pmb_data_val(0x40, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(4));
206 	writel(mk_pmb_addr_val(0x90), PMB_ADDR_BASE(6));
207 	writel(mk_pmb_data_val(0x50, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(6));
208 	writel(mk_pmb_addr_val(0x98), PMB_ADDR_BASE(7));
209 	writel(mk_pmb_data_val(0x58, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(7));
210 }
211 
212 int board_init(void)
213 {
214 	struct gether_control_regs *gether = GETHER_CONTROL_BASE;
215 
216 	set_pmb_on_board_init();
217 
218 	/* enable RMII's MDIO (disable GRMII's MDIO) */
219 	writel(0x00030000, &gether->gbecont);
220 
221 	init_gctrl();
222 	init_usb_phy();
223 
224 	return 0;
225 }
226 
227 int board_mmc_init(bd_t *bis)
228 {
229 	return mmcif_mmc_init();
230 }
231 
232 static int get_sh_eth_mac_raw(unsigned char *buf, int size)
233 {
234 	struct spi_flash *spi;
235 	int ret;
236 
237 	spi = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
238 	if (spi == NULL) {
239 		printf("%s: spi_flash probe error.\n", __func__);
240 		return 1;
241 	}
242 
243 	ret = spi_flash_read(spi, SH7757LCR_ETHERNET_MAC_BASE, size, buf);
244 	if (ret) {
245 		printf("%s: spi_flash read error.\n", __func__);
246 		spi_flash_free(spi);
247 		return 1;
248 	}
249 	spi_flash_free(spi);
250 
251 	return 0;
252 }
253 
254 static int get_sh_eth_mac(int channel, char *mac_string, unsigned char *buf)
255 {
256 	memcpy(mac_string, &buf[channel * (SH7757LCR_ETHERNET_MAC_SIZE + 1)],
257 		SH7757LCR_ETHERNET_MAC_SIZE);
258 	mac_string[SH7757LCR_ETHERNET_MAC_SIZE] = 0x00;	/* terminate */
259 
260 	return 0;
261 }
262 
263 static void init_ethernet_mac(void)
264 {
265 	char mac_string[64];
266 	char env_string[64];
267 	int i;
268 	unsigned char *buf;
269 
270 	buf = malloc(256);
271 	if (!buf) {
272 		printf("%s: malloc error.\n", __func__);
273 		return;
274 	}
275 	get_sh_eth_mac_raw(buf, 256);
276 
277 	/* Fast Ethernet */
278 	for (i = 0; i < SH7757LCR_ETHERNET_NUM_CH; i++) {
279 		get_sh_eth_mac(i, mac_string, buf);
280 		if (i == 0)
281 			env_set("ethaddr", mac_string);
282 		else {
283 			sprintf(env_string, "eth%daddr", i);
284 			env_set(env_string, mac_string);
285 		}
286 
287 		set_mac_to_sh_eth_register(i, mac_string);
288 	}
289 
290 	/* Gigabit Ethernet */
291 	for (i = 0; i < SH7757LCR_GIGA_ETHERNET_NUM_CH; i++) {
292 		get_sh_eth_mac(i + SH7757LCR_ETHERNET_NUM_CH, mac_string, buf);
293 		sprintf(env_string, "eth%daddr", i + SH7757LCR_ETHERNET_NUM_CH);
294 		env_set(env_string, mac_string);
295 
296 		set_mac_to_sh_giga_eth_register(i, mac_string);
297 	}
298 
299 	free(buf);
300 }
301 
302 static void init_pcie(void)
303 {
304 	struct pcie_setup_regs *pcie_setup = PCIE_SETUP_BASE;
305 	struct pcie_system_bus_regs *pcie_sysbus = PCIE_SYSTEM_BUS_BASE;
306 
307 	writel(0x00000ff2, &pcie_setup->ladmsk0);
308 	writel(0x00000001, &pcie_setup->barmap);
309 	writel(0xffcaa000, &pcie_setup->lad0);
310 	writel(0x00030000, &pcie_sysbus->endictl0);
311 	writel(0x00000003, &pcie_sysbus->endictl1);
312 	writel(0x00000004, &pcie_setup->pbictl2);
313 }
314 
315 static void finish_spiboot(void)
316 {
317 	struct gctrl_regs *gctrl = GCTRL_BASE;
318 	/*
319 	 *  SH7757 B0 does not use LBSC.
320 	 *  So if we set SPIBOOTCAN to 1, SH7757 can not access Area0.
321 	 *  This setting is not cleared by manual reset, So we have to set it
322 	 *  to 0.
323 	 */
324 	writel(0x00000000, &gctrl->spibootcan);
325 }
326 
327 int board_late_init(void)
328 {
329 	init_ethernet_mac();
330 	init_pcie_bridge();
331 	init_pcie();
332 	finish_spiboot();
333 
334 	return 0;
335 }
336 
337 int do_sh_g200(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
338 {
339 	struct gctrl_regs *gctrl = GCTRL_BASE;
340 	unsigned long graofst;
341 
342 	writel(0xfedcba98, &gctrl->wprotect);
343 	graofst = (SH7757LCR_SDRAM_PHYS_TOP + SH7757LCR_GRA_OFFSET) >> 24;
344 	writel(graofst | 0xa0000f00, &gctrl->gracr3);
345 
346 	return 0;
347 }
348 
349 U_BOOT_CMD(
350 	sh_g200,	1,	1,	do_sh_g200,
351 	"enable sh-g200",
352 	"enable SH-G200 bus (disable PCIe-G200)"
353 );
354 
355 int do_write_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
356 {
357 	int i, ret;
358 	char mac_string[256];
359 	struct spi_flash *spi;
360 	unsigned char *buf;
361 
362 	if (argc != 5) {
363 		buf = malloc(256);
364 		if (!buf) {
365 			printf("%s: malloc error.\n", __func__);
366 			return 1;
367 		}
368 
369 		get_sh_eth_mac_raw(buf, 256);
370 
371 		/* print current MAC address */
372 		for (i = 0; i < 4; i++) {
373 			get_sh_eth_mac(i, mac_string, buf);
374 			if (i < 2)
375 				printf(" ETHERC ch%d = %s\n", i, mac_string);
376 			else
377 				printf("GETHERC ch%d = %s\n", i-2, mac_string);
378 		}
379 		free(buf);
380 		return 0;
381 	}
382 
383 	/* new setting */
384 	memset(mac_string, 0xff, sizeof(mac_string));
385 	sprintf(mac_string, "%s\t%s\t%s\t%s",
386 		argv[1], argv[2], argv[3], argv[4]);
387 
388 	/* write MAC data to SPI rom */
389 	spi = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
390 	if (!spi) {
391 		printf("%s: spi_flash probe error.\n", __func__);
392 		return 1;
393 	}
394 
395 	ret = spi_flash_erase(spi, SH7757LCR_ETHERNET_MAC_BASE_SPI,
396 				SH7757LCR_SPI_SECTOR_SIZE);
397 	if (ret) {
398 		printf("%s: spi_flash erase error.\n", __func__);
399 		return 1;
400 	}
401 
402 	ret = spi_flash_write(spi, SH7757LCR_ETHERNET_MAC_BASE_SPI,
403 				sizeof(mac_string), mac_string);
404 	if (ret) {
405 		printf("%s: spi_flash write error.\n", __func__);
406 		spi_flash_free(spi);
407 		return 1;
408 	}
409 	spi_flash_free(spi);
410 
411 	puts("The writing of the MAC address to SPI ROM was completed.\n");
412 
413 	return 0;
414 }
415 
416 U_BOOT_CMD(
417 	write_mac,	5,	1,	do_write_mac,
418 	"write MAC address for ETHERC/GETHERC",
419 	"[ETHERC ch0] [ETHERC ch1] [GETHERC ch0] [GETHERC ch1]\n"
420 );
421