1 /*
2  * Copyright 2007,2009-2011 Freescale Semiconductor, Inc.
3  *
4  * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <common.h>
10 #include <pci.h>
11 #include <asm/processor.h>
12 #include <asm/mmu.h>
13 #include <asm/immap_85xx.h>
14 #include <asm/fsl_pci.h>
15 #include <fsl_ddr_sdram.h>
16 #include <asm/fsl_serdes.h>
17 #include <spd_sdram.h>
18 #include <i2c.h>
19 #include <ioports.h>
20 #include <libfdt.h>
21 #include <fdt_support.h>
22 
23 #include "bcsr.h"
24 
25 const qe_iop_conf_t qe_iop_conf_tab[] = {
26 	/* GETH1 */
27 	{4, 10, 1, 0, 2}, /* TxD0 */
28 	{4,  9, 1, 0, 2}, /* TxD1 */
29 	{4,  8, 1, 0, 2}, /* TxD2 */
30 	{4,  7, 1, 0, 2}, /* TxD3 */
31 	{4, 23, 1, 0, 2}, /* TxD4 */
32 	{4, 22, 1, 0, 2}, /* TxD5 */
33 	{4, 21, 1, 0, 2}, /* TxD6 */
34 	{4, 20, 1, 0, 2}, /* TxD7 */
35 	{4, 15, 2, 0, 2}, /* RxD0 */
36 	{4, 14, 2, 0, 2}, /* RxD1 */
37 	{4, 13, 2, 0, 2}, /* RxD2 */
38 	{4, 12, 2, 0, 2}, /* RxD3 */
39 	{4, 29, 2, 0, 2}, /* RxD4 */
40 	{4, 28, 2, 0, 2}, /* RxD5 */
41 	{4, 27, 2, 0, 2}, /* RxD6 */
42 	{4, 26, 2, 0, 2}, /* RxD7 */
43 	{4, 11, 1, 0, 2}, /* TX_EN */
44 	{4, 24, 1, 0, 2}, /* TX_ER */
45 	{4, 16, 2, 0, 2}, /* RX_DV */
46 	{4, 30, 2, 0, 2}, /* RX_ER */
47 	{4, 17, 2, 0, 2}, /* RX_CLK */
48 	{4, 19, 1, 0, 2}, /* GTX_CLK */
49 	{1, 31, 2, 0, 3}, /* GTX125 */
50 
51 	/* GETH2 */
52 	{5, 10, 1, 0, 2}, /* TxD0 */
53 	{5,  9, 1, 0, 2}, /* TxD1 */
54 	{5,  8, 1, 0, 2}, /* TxD2 */
55 	{5,  7, 1, 0, 2}, /* TxD3 */
56 	{5, 23, 1, 0, 2}, /* TxD4 */
57 	{5, 22, 1, 0, 2}, /* TxD5 */
58 	{5, 21, 1, 0, 2}, /* TxD6 */
59 	{5, 20, 1, 0, 2}, /* TxD7 */
60 	{5, 15, 2, 0, 2}, /* RxD0 */
61 	{5, 14, 2, 0, 2}, /* RxD1 */
62 	{5, 13, 2, 0, 2}, /* RxD2 */
63 	{5, 12, 2, 0, 2}, /* RxD3 */
64 	{5, 29, 2, 0, 2}, /* RxD4 */
65 	{5, 28, 2, 0, 2}, /* RxD5 */
66 	{5, 27, 2, 0, 3}, /* RxD6 */
67 	{5, 26, 2, 0, 2}, /* RxD7 */
68 	{5, 11, 1, 0, 2}, /* TX_EN */
69 	{5, 24, 1, 0, 2}, /* TX_ER */
70 	{5, 16, 2, 0, 2}, /* RX_DV */
71 	{5, 30, 2, 0, 2}, /* RX_ER */
72 	{5, 17, 2, 0, 2}, /* RX_CLK */
73 	{5, 19, 1, 0, 2}, /* GTX_CLK */
74 	{1, 31, 2, 0, 3}, /* GTX125 */
75 	{4,  6, 3, 0, 2}, /* MDIO */
76 	{4,  5, 1, 0, 2}, /* MDC */
77 
78 	/* UART1 */
79 	{2, 0, 1, 0, 2}, /* UART_SOUT1 */
80 	{2, 1, 1, 0, 2}, /* UART_RTS1 */
81 	{2, 2, 2, 0, 2}, /* UART_CTS1 */
82 	{2, 3, 2, 0, 2}, /* UART_SIN1 */
83 
84 	{0,  0, 0, 0, QE_IOP_TAB_END}, /* END of table */
85 };
86 
87 void local_bus_init(void);
88 
89 int board_early_init_f (void)
90 {
91 	/*
92 	 * Initialize local bus.
93 	 */
94 	local_bus_init ();
95 
96 	enable_8568mds_duart();
97 	enable_8568mds_flash_write();
98 #if defined(CONFIG_UEC_ETH1) || defined(CONFIG_UEC_ETH2)
99 	reset_8568mds_uccs();
100 #endif
101 #if defined(CONFIG_QE) && !defined(CONFIG_eTSEC_MDIO_BUS)
102 	enable_8568mds_qe_mdio();
103 #endif
104 
105 #ifdef CONFIG_SYS_I2C2_OFFSET
106 	/* Enable I2C2_SCL and I2C2_SDA */
107 	volatile struct par_io *port_c;
108 	port_c = (struct par_io*)(CONFIG_SYS_IMMR + 0xe0140);
109 	port_c->cpdir2 |= 0x0f000000;
110 	port_c->cppar2 &= ~0x0f000000;
111 	port_c->cppar2 |= 0x0a000000;
112 #endif
113 
114 	return 0;
115 }
116 
117 int checkboard (void)
118 {
119 	printf ("Board: 8568 MDS\n");
120 
121 	return 0;
122 }
123 
124 /*
125  * Initialize Local Bus
126  */
127 void
128 local_bus_init(void)
129 {
130 	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
131 	volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
132 
133 	uint clkdiv;
134 	sys_info_t sysinfo;
135 
136 	get_sys_info(&sysinfo);
137 	clkdiv = (lbc->lcrr & LCRR_CLKDIV) * 2;
138 
139 	gur->lbiuiplldcr1 = 0x00078080;
140 	if (clkdiv == 16) {
141 		gur->lbiuiplldcr0 = 0x7c0f1bf0;
142 	} else if (clkdiv == 8) {
143 		gur->lbiuiplldcr0 = 0x6c0f1bf0;
144 	} else if (clkdiv == 4) {
145 		gur->lbiuiplldcr0 = 0x5c0f1bf0;
146 	}
147 
148 	lbc->lcrr |= 0x00030000;
149 
150 	asm("sync;isync;msync");
151 }
152 
153 /*
154  * Initialize SDRAM memory on the Local Bus.
155  */
156 void lbc_sdram_init(void)
157 {
158 #if defined(CONFIG_SYS_OR2_PRELIM) && defined(CONFIG_SYS_BR2_PRELIM)
159 
160 	uint idx;
161 	volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
162 	uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
163 	uint lsdmr_common;
164 
165 	puts("LBC SDRAM: ");
166 	print_size(CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024,
167 		   "\n       ");
168 
169 	/*
170 	 * Setup SDRAM Base and Option Registers
171 	 */
172 	set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
173 	set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
174 	asm("msync");
175 
176 	lbc->lbcr = CONFIG_SYS_LBC_LBCR;
177 	asm("msync");
178 
179 	lbc->lsrt = CONFIG_SYS_LBC_LSRT;
180 	lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
181 	asm("msync");
182 
183 	/*
184 	 * MPC8568 uses "new" 15-16 style addressing.
185 	 */
186 	lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
187 	lsdmr_common |= LSDMR_BSMA1516;
188 
189 	/*
190 	 * Issue PRECHARGE ALL command.
191 	 */
192 	lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
193 	asm("sync;msync");
194 	*sdram_addr = 0xff;
195 	ppcDcbf((unsigned long) sdram_addr);
196 	udelay(100);
197 
198 	/*
199 	 * Issue 8 AUTO REFRESH commands.
200 	 */
201 	for (idx = 0; idx < 8; idx++) {
202 		lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
203 		asm("sync;msync");
204 		*sdram_addr = 0xff;
205 		ppcDcbf((unsigned long) sdram_addr);
206 		udelay(100);
207 	}
208 
209 	/*
210 	 * Issue 8 MODE-set command.
211 	 */
212 	lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
213 	asm("sync;msync");
214 	*sdram_addr = 0xff;
215 	ppcDcbf((unsigned long) sdram_addr);
216 	udelay(100);
217 
218 	/*
219 	 * Issue NORMAL OP command.
220 	 */
221 	lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
222 	asm("sync;msync");
223 	*sdram_addr = 0xff;
224 	ppcDcbf((unsigned long) sdram_addr);
225 	udelay(200);    /* Overkill. Must wait > 200 bus cycles */
226 
227 #endif	/* enable SDRAM init */
228 }
229 
230 #if defined(CONFIG_PCI)
231 #ifndef CONFIG_PCI_PNP
232 static struct pci_config_table pci_mpc8568mds_config_table[] = {
233 	{
234 	 PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
235 	 pci_cfgfunc_config_device,
236 	 {PCI_ENET0_IOADDR,
237 	  PCI_ENET0_MEMADDR,
238 	  PCI_COMMON_MEMORY | PCI_COMMAND_MASTER}
239 	 },
240 	{}
241 };
242 #endif
243 
244 static struct pci_controller pci1_hose;
245 #endif	/* CONFIG_PCI */
246 
247 /*
248  * pib_init() -- Initialize the PCA9555 IO expander on the PIB board
249  */
250 void
251 pib_init(void)
252 {
253 	u8 val8, orig_i2c_bus;
254 	/*
255 	 * Assign PIB PMC2/3 to PCI bus
256 	 */
257 
258 	/*switch temporarily to I2C bus #2 */
259 	orig_i2c_bus = i2c_get_bus_num();
260 	i2c_set_bus_num(1);
261 
262 	val8 = 0x00;
263 	i2c_write(0x23, 0x6, 1, &val8, 1);
264 	i2c_write(0x23, 0x7, 1, &val8, 1);
265 	val8 = 0xff;
266 	i2c_write(0x23, 0x2, 1, &val8, 1);
267 	i2c_write(0x23, 0x3, 1, &val8, 1);
268 
269 	val8 = 0x00;
270 	i2c_write(0x26, 0x6, 1, &val8, 1);
271 	val8 = 0x34;
272 	i2c_write(0x26, 0x7, 1, &val8, 1);
273 	val8 = 0xf9;
274 	i2c_write(0x26, 0x2, 1, &val8, 1);
275 	val8 = 0xff;
276 	i2c_write(0x26, 0x3, 1, &val8, 1);
277 
278 	val8 = 0x00;
279 	i2c_write(0x27, 0x6, 1, &val8, 1);
280 	i2c_write(0x27, 0x7, 1, &val8, 1);
281 	val8 = 0xff;
282 	i2c_write(0x27, 0x2, 1, &val8, 1);
283 	val8 = 0xef;
284 	i2c_write(0x27, 0x3, 1, &val8, 1);
285 
286 	asm("eieio");
287 	i2c_set_bus_num(orig_i2c_bus);
288 }
289 
290 #ifdef CONFIG_PCI
291 void pci_init_board(void)
292 {
293 	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
294 	int first_free_busno = 0;
295 #ifdef CONFIG_PCI1
296 	struct fsl_pci_info pci_info;
297 	u32 devdisr, pordevsr, io_sel;
298 	u32 porpllsr, pci_agent, pci_speed, pci_32, pci_arb, pci_clk_sel;
299 
300 	devdisr = in_be32(&gur->devdisr);
301 	pordevsr = in_be32(&gur->pordevsr);
302 	porpllsr = in_be32(&gur->porpllsr);
303 	io_sel = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> 19;
304 
305 	debug ("   pci_init_board: devdisr=%x, io_sel=%x\n", devdisr, io_sel);
306 
307 	pci_speed = 66666000;
308 	pci_32 = 1;
309 	pci_arb = pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;
310 	pci_clk_sel = porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;
311 
312 	if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
313 		SET_STD_PCI_INFO(pci_info, 1);
314 		set_next_law(pci_info.mem_phys,
315 			law_size_bits(pci_info.mem_size), pci_info.law);
316 		set_next_law(pci_info.io_phys,
317 			law_size_bits(pci_info.io_size), pci_info.law);
318 
319 		pci_agent = fsl_setup_hose(&pci1_hose, pci_info.regs);
320 		printf("PCI: %d bit, %s MHz, %s, %s, %s (base address %lx)\n",
321 			(pci_32) ? 32 : 64,
322 			(pci_speed == 33333000) ? "33" :
323 			(pci_speed == 66666000) ? "66" : "unknown",
324 			pci_clk_sel ? "sync" : "async",
325 			pci_agent ? "agent" : "host",
326 			pci_arb ? "arbiter" : "external-arbiter",
327 			pci_info.regs);
328 
329 #ifndef CONFIG_PCI_PNP
330 		pci1_hose.config_table = pci_mpc8568mds_config_table;
331 #endif
332 		first_free_busno = fsl_pci_init_port(&pci_info,
333 					&pci1_hose, first_free_busno);
334 	} else {
335 		printf("PCI: disabled\n");
336 	}
337 
338 	puts("\n");
339 #else
340 	setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1); /* disable */
341 #endif
342 
343 	fsl_pcie_init_board(first_free_busno);
344 }
345 #endif /* CONFIG_PCI */
346 
347 #if defined(CONFIG_OF_BOARD_SETUP)
348 int ft_board_setup(void *blob, bd_t *bd)
349 {
350 	ft_cpu_setup(blob, bd);
351 
352 	FT_FSL_PCI_SETUP;
353 
354 	return 0;
355 }
356 #endif
357