1 /*
2  * Copyright 2011,2012 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <command.h>
9 #include <netdev.h>
10 #include <linux/compiler.h>
11 #include <asm/mmu.h>
12 #include <asm/processor.h>
13 #include <asm/cache.h>
14 #include <asm/immap_85xx.h>
15 #include <asm/fsl_law.h>
16 #include <asm/fsl_serdes.h>
17 #include <asm/fsl_liodn.h>
18 #include <fm_eth.h>
19 
20 extern void pci_of_setup(void *blob, bd_t *bd);
21 
22 #include "cpld.h"
23 
24 DECLARE_GLOBAL_DATA_PTR;
25 
26 int checkboard(void)
27 {
28 	u8 sw;
29 	struct cpu_type *cpu = gd->arch.cpu;
30 	unsigned int i;
31 
32 	printf("Board: %sRDB, ", cpu->name);
33 	printf("CPLD version: %d.%d ", CPLD_READ(cpld_ver),
34 			CPLD_READ(cpld_ver_sub));
35 
36 	sw = CPLD_READ(fbank_sel);
37 	printf("vBank: %d\n", sw & 0x1);
38 
39 	/*
40 	 * Display the actual SERDES reference clocks as configured by the
41 	 * dip switches on the board.  Note that the SWx registers could
42 	 * technically be set to force the reference clocks to match the
43 	 * values that the SERDES expects (or vice versa).  For now, however,
44 	 * we just display both values and hope the user notices when they
45 	 * don't match.
46 	 */
47 	puts("SERDES Reference Clocks: ");
48 	sw = in_8(&CPLD_SW(2)) >> 2;
49 	for (i = 0; i < 2; i++) {
50 		static const char * const freq[][3] = {{"0", "100", "125"},
51 						{"100", "156.25", "125"}
52 		};
53 		unsigned int clock = (sw >> (2 * i)) & 3;
54 
55 		printf("Bank%u=%sMhz ", i+1, freq[i][clock]);
56 	}
57 	puts("\n");
58 
59 	return 0;
60 }
61 
62 int board_early_init_f(void)
63 {
64 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
65 
66 	/* board only uses the DDR_MCK0/1, so disable the DDR_MCK2/3 */
67 	setbits_be32(&gur->ddrclkdr, 0x000f000f);
68 
69 	return 0;
70 }
71 
72 #define CPLD_LANE_A_SEL	0x1
73 #define CPLD_LANE_G_SEL	0x2
74 #define CPLD_LANE_C_SEL	0x4
75 #define CPLD_LANE_D_SEL	0x8
76 
77 void board_config_lanes_mux(void)
78 {
79 	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
80 	int srds_prtcl = (in_be32(&gur->rcwsr[4]) &
81 				FSL_CORENET_RCWSR4_SRDS_PRTCL) >> 26;
82 
83 	u8 mux = 0;
84 	switch (srds_prtcl) {
85 	case 0x2:
86 	case 0x5:
87 	case 0x9:
88 	case 0xa:
89 	case 0xf:
90 		break;
91 	case 0x8:
92 		mux |= CPLD_LANE_C_SEL | CPLD_LANE_D_SEL;
93 		break;
94 	case 0x14:
95 		mux |= CPLD_LANE_A_SEL;
96 		break;
97 	case 0x17:
98 		mux |= CPLD_LANE_G_SEL;
99 		break;
100 	case 0x16:
101 	case 0x19:
102 	case 0x1a:
103 		mux |= CPLD_LANE_G_SEL | CPLD_LANE_C_SEL | CPLD_LANE_D_SEL;
104 		break;
105 	case 0x1c:
106 		mux |= CPLD_LANE_G_SEL | CPLD_LANE_A_SEL;
107 		break;
108 	default:
109 		printf("Fman:Unsupported SerDes Protocol 0x%02x\n", srds_prtcl);
110 		break;
111 	}
112 	CPLD_WRITE(serdes_mux, mux);
113 }
114 
115 int board_early_init_r(void)
116 {
117 	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
118 	int flash_esel = find_tlb_idx((void *)flashbase, 1);
119 
120 	/*
121 	 * Remap Boot flash + PROMJET region to caching-inhibited
122 	 * so that flash can be erased properly.
123 	 */
124 
125 	/* Flush d-cache and invalidate i-cache of any FLASH data */
126 	flush_dcache();
127 	invalidate_icache();
128 
129 	if (flash_esel == -1) {
130 		/* very unlikely unless something is messed up */
131 		puts("Error: Could not find TLB for FLASH BASE\n");
132 		flash_esel = 2;	/* give our best effort to continue */
133 	} else {
134 		/* invalidate existing TLB entry for flash + promjet */
135 		disable_tlb(flash_esel);
136 	}
137 
138 	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
139 			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
140 			0, flash_esel, BOOKE_PAGESZ_256M, 1);
141 
142 	board_config_lanes_mux();
143 
144 	return 0;
145 }
146 
147 unsigned long get_board_sys_clk(unsigned long dummy)
148 {
149 	u8 sysclk_conf = CPLD_READ(sysclk_sw1);
150 
151 	switch (sysclk_conf & 0x7) {
152 	case CPLD_SYSCLK_83:
153 		return 83333333;
154 	case CPLD_SYSCLK_100:
155 		return 100000000;
156 	default:
157 		return 66666666;
158 	}
159 }
160 
161 #define NUM_SRDS_BANKS	2
162 
163 int misc_init_r(void)
164 {
165 	serdes_corenet_t *regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
166 	u32 actual[NUM_SRDS_BANKS];
167 	unsigned int i;
168 	u8 sw;
169 	static const int freq[][3] = {
170 		{0, SRDS_PLLCR0_RFCK_SEL_100, SRDS_PLLCR0_RFCK_SEL_125},
171 		{SRDS_PLLCR0_RFCK_SEL_100, SRDS_PLLCR0_RFCK_SEL_156_25,
172 			SRDS_PLLCR0_RFCK_SEL_125}
173 	};
174 
175 	sw = in_8(&CPLD_SW(2)) >> 2;
176 	for (i = 0; i < NUM_SRDS_BANKS; i++) {
177 		unsigned int clock = (sw >> (2 * i)) & 3;
178 		if (clock == 0x3) {
179 			printf("Warning: SDREFCLK%u switch setting of '11' is "
180 			       "unsupported\n", i + 1);
181 			break;
182 		}
183 		if (i == 0 && clock == 0)
184 			puts("Warning: SDREFCLK1 switch setting of"
185 				"'00' is unsupported\n");
186 		else
187 			actual[i] = freq[i][clock];
188 
189 		/*
190 		 * PC board uses a different CPLD with PB board, this CPLD
191 		 * has cpld_ver_sub = 1, and pcba_ver = 5. But CPLD on PB
192 		 * board has cpld_ver_sub = 0, and pcba_ver = 4.
193 		 */
194 		if ((i == 1) && (CPLD_READ(cpld_ver_sub) == 1) &&
195 		    (CPLD_READ(pcba_ver) == 5)) {
196 			/* PC board bank2 frequency */
197 			actual[i] = freq[i-1][clock];
198 		}
199 	}
200 
201 	for (i = 0; i < NUM_SRDS_BANKS; i++) {
202 		u32 expected = in_be32(&regs->bank[i].pllcr0);
203 		expected &= SRDS_PLLCR0_RFCK_SEL_MASK;
204 		if (expected != actual[i]) {
205 			printf("Warning: SERDES bank %u expects reference clock"
206 			       " %sMHz, but actual is %sMHz\n", i + 1,
207 			       serdes_clock_to_string(expected),
208 			       serdes_clock_to_string(actual[i]));
209 		}
210 	}
211 
212 	return 0;
213 }
214 
215 int ft_board_setup(void *blob, bd_t *bd)
216 {
217 	phys_addr_t base;
218 	phys_size_t size;
219 
220 	ft_cpu_setup(blob, bd);
221 
222 	base = getenv_bootm_low();
223 	size = getenv_bootm_size();
224 
225 	fdt_fixup_memory(blob, (u64)base, (u64)size);
226 
227 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
228 	fdt_fixup_dr_usb(blob, bd);
229 #endif
230 
231 #ifdef CONFIG_PCI
232 	pci_of_setup(blob, bd);
233 #endif
234 
235 	fdt_fixup_liodn(blob);
236 #ifdef CONFIG_SYS_DPAA_FMAN
237 	fdt_fixup_fman_ethernet(blob);
238 #endif
239 
240 	return 0;
241 }
242