aboutsummaryrefslogtreecommitdiff
path: root/board/freescale/p2041rdb/p2041rdb.c
blob: 52269d3ce4ff0eeb77e3102a61c96519e02075ec (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/*
 * Copyright 2011 Freescale Semiconductor, Inc.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#include <netdev.h>
#include <linux/compiler.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/cache.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_law.h>
#include <asm/fsl_serdes.h>
#include <asm/fsl_portals.h>
#include <asm/fsl_liodn.h>

extern void pci_of_setup(void *blob, bd_t *bd);

#include "cpld.h"

DECLARE_GLOBAL_DATA_PTR;

int checkboard(void)
{
	u8 sw;
	struct cpu_type *cpu = gd->cpu;
	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
	unsigned int i;

	printf("Board: %sRDB, ", cpu->name);
	printf("CPLD version: %d.%d ", CPLD_READ(cpld_ver),
			CPLD_READ(cpld_ver_sub));

	sw = CPLD_READ(fbank_sel);
	printf("vBank: %d\n", sw & 0x1);

#ifdef CONFIG_PHYS_64BIT
	puts("36-bit Addressing\n");
#endif

	/*
	 * Display the RCW, so that no one gets confused as to what RCW
	 * we're actually using for this boot.
	 */
	puts("Reset Configuration Word (RCW):");
	for (i = 0; i < ARRAY_SIZE(gur->rcwsr); i++) {
		u32 rcw = in_be32(&gur->rcwsr[i]);

		if ((i % 4) == 0)
			printf("\n       %08x:", i * 4);
		printf(" %08x", rcw);
	}
	puts("\n");

	/*
	 * Display the actual SERDES reference clocks as configured by the
	 * dip switches on the board.  Note that the SWx registers could
	 * technically be set to force the reference clocks to match the
	 * values that the SERDES expects (or vice versa).  For now, however,
	 * we just display both values and hope the user notices when they
	 * don't match.
	 */
	puts("SERDES Reference Clocks: ");
	sw = in_8(&CPLD_SW(2)) >> 2;
	for (i = 0; i < 2; i++) {
		static const char * const freq[] = {"0", "100", "125"};
		unsigned int clock = (sw >> (2 * i)) & 3;

		printf("Bank%u=%sMhz ", i+1, freq[clock]);
	}
	puts("\n");

	return 0;
}

int board_early_init_f(void)
{
	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);

	/* board only uses the DDR_MCK0/1, so disable the DDR_MCK2/3 */
	setbits_be32(&gur->ddrclkdr, 0x000f000f);

	return 0;
}

int board_early_init_r(void)
{
	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
	const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);

	/*
	 * Remap Boot flash + PROMJET region to caching-inhibited
	 * so that flash can be erased properly.
	 */

	/* Flush d-cache and invalidate i-cache of any FLASH data */
	flush_dcache();
	invalidate_icache();

	/* invalidate existing TLB entry for flash + promjet */
	disable_tlb(flash_esel);

	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
			0, flash_esel, BOOKE_PAGESZ_256M, 1);

	set_liodns();
	setup_portals();

	return 0;
}

static const char *serdes_clock_to_string(u32 clock)
{
	switch (clock) {
	case SRDS_PLLCR0_RFCK_SEL_100:
		return "100";
	case SRDS_PLLCR0_RFCK_SEL_125:
		return "125";
	case SRDS_PLLCR0_RFCK_SEL_156_25:
		return "156.25";
	default:
		return "150";
	}
}

#define NUM_SRDS_BANKS	2

int misc_init_r(void)
{
	serdes_corenet_t *regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
	u32 actual[NUM_SRDS_BANKS];
	unsigned int i;
	u8 sw;

	sw = in_8(&CPLD_SW(2)) >> 2;
	for (i = 0; i < NUM_SRDS_BANKS; i++) {
		unsigned int clock = (sw >> (2 * i)) & 3;
		switch (clock) {
		case 1:
			actual[i] = SRDS_PLLCR0_RFCK_SEL_100;
			break;
		case 2:
			actual[i] = SRDS_PLLCR0_RFCK_SEL_125;
			break;
		default:
			printf("Warning: SDREFCLK%u switch setting of '11' is "
			       "unsupported\n", i + 1);
			break;
		}
	}

	for (i = 0; i < NUM_SRDS_BANKS; i++) {
		u32 expected = in_be32(&regs->bank[i].pllcr0);
		expected &= SRDS_PLLCR0_RFCK_SEL_MASK;
		if (expected != actual[i]) {
			printf("Warning: SERDES bank %u expects reference clock"
			       " %sMHz, but actual is %sMHz\n", i + 1,
			       serdes_clock_to_string(expected),
			       serdes_clock_to_string(actual[i]));
		}
	}

	return 0;
}

void ft_board_setup(void *blob, bd_t *bd)
{
	phys_addr_t base;
	phys_size_t size;

	ft_cpu_setup(blob, bd);

	base = getenv_bootm_low();
	size = getenv_bootm_size();

	fdt_fixup_memory(blob, (u64)base, (u64)size);

#ifdef CONFIG_PCI
	pci_of_setup(blob, bd);
#endif

	fdt_fixup_liodn(blob);
}