summaryrefslogtreecommitdiff
path: root/board/prodrive/p3p440/p3p440.c
blob: e07400794b063f2a9604e70fcc528cfe04269f69 (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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
/*
 * (C) Copyright 2005
 * Stefan Roese, DENX Software Engineering, sr@denx.de.
 *
 * Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.com>
 *
 * 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 <asm/processor.h>
#include <command.h>

#include "p3p440.h"

DECLARE_GLOBAL_DATA_PTR;

void set_led(int color)
{
	switch (color) {
	case LED_OFF:
		out32(GPIO0_OR,  in32(GPIO0_OR) & ~CONFIG_SYS_LED_GREEN & ~CONFIG_SYS_LED_RED);
		break;

	case LED_GREEN:
		out32(GPIO0_OR,  (in32(GPIO0_OR) | CONFIG_SYS_LED_GREEN) & ~CONFIG_SYS_LED_RED);
		break;

	case LED_RED:
		out32(GPIO0_OR,  (in32(GPIO0_OR) | CONFIG_SYS_LED_RED) & ~CONFIG_SYS_LED_GREEN);
		break;

	case LED_ORANGE:
		out32(GPIO0_OR,  in32(GPIO0_OR) | CONFIG_SYS_LED_GREEN | CONFIG_SYS_LED_RED);
		break;
	}
}

static int is_monarch(void)
{
	out32(GPIO0_OR,  in32(GPIO0_OR) & ~CONFIG_SYS_GPIO_RDY);
	udelay(1000);

	if (in32(GPIO0_IR) & CONFIG_SYS_MONARCH_IO)
		return 0;
	else
		return 1;
}

static void wait_for_pci_ready(void)
{
	/*
	 * Configure EREADY_IO as input
	 */
	out32(GPIO0_TCR, in32(GPIO0_TCR) & ~CONFIG_SYS_EREADY_IO);
	udelay(1000);

	for (;;) {
		if (in32(GPIO0_IR) & CONFIG_SYS_EREADY_IO)
			return;
	}

}

int board_early_init_f(void)
{
	uint reg;

	/*--------------------------------------------------------------------
	 * Setup the external bus controller/chip selects
	 *-------------------------------------------------------------------*/
	mtdcr(EBC0_CFGADDR, EBC0_CFG);
	reg = mfdcr(EBC0_CFGDATA);
	mtdcr(EBC0_CFGDATA, reg | 0x04000000);	/* Set ATC */

	/*--------------------------------------------------------------------
	 * Setup pin multiplexing (GPIO/IRQ...)
	 *-------------------------------------------------------------------*/
	mtdcr(CPC0_GPIO, 0x03F01F80);

	out32(GPIO0_ODR, 0x00000000);	/* no open drain pins      */
	out32(GPIO0_TCR, CONFIG_SYS_GPIO_RDY | CONFIG_SYS_EREADY_IO | CONFIG_SYS_LED_RED | CONFIG_SYS_LED_GREEN);
	out32(GPIO0_OR,  CONFIG_SYS_GPIO_RDY);

	/*--------------------------------------------------------------------
	 * Setup the interrupt controller polarities, triggers, etc.
	 *-------------------------------------------------------------------*/
	mtdcr(UIC0SR, 0xffffffff);	/* clear all */
	mtdcr(UIC0ER, 0x00000000);	/* disable all */
	mtdcr(UIC0CR, 0x00000001);	/* UIC1 crit is critical */
	mtdcr(UIC0PR, 0xfffffe13);	/* per ref-board manual */
	mtdcr(UIC0TR, 0x01c00008);	/* per ref-board manual */
	mtdcr(UIC0VR, 0x00000001);	/* int31 highest, base=0x000 */
	mtdcr(UIC0SR, 0xffffffff);	/* clear all */

	mtdcr(UIC1SR, 0xffffffff);	/* clear all */
	mtdcr(UIC1ER, 0x00000000);	/* disable all */
	mtdcr(UIC1CR, 0x00000000);	/* all non-critical */
	mtdcr(UIC1PR, 0xffffe0ff);	/* per ref-board manual */
	mtdcr(UIC1TR, 0x00ffc000);	/* per ref-board manual */
	mtdcr(UIC1VR, 0x00000001);	/* int31 highest, base=0x000 */
	mtdcr(UIC1SR, 0xffffffff);	/* clear all */

	return 0;
}

int checkboard(void)
{
	char *s = getenv("serial#");

	printf("Board: P3P440");
	if (s != NULL) {
		puts(", serial# ");
		puts(s);
	}

	if (is_monarch()) {
		puts(", Monarch");
	} else {
		puts(", None-Monarch");
	}

	putc('\n');

	return (0);
}

int misc_init_r (void)
{
	/*
	 * Adjust flash start and offset to detected values
	 */
	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
	gd->bd->bi_flashoffset = 0;

	/*
	 * Check if only one FLASH bank is available
	 */
	if (gd->bd->bi_flashsize != CONFIG_SYS_MAX_FLASH_BANKS * (0 - CONFIG_SYS_FLASH0)) {
		mtebc(PB1CR, 0);			/* disable cs */
		mtebc(PB1AP, 0);
		mtebc(PB2CR, 0);			/* disable cs */
		mtebc(PB2AP, 0);
		mtebc(PB3CR, 0);			/* disable cs */
		mtebc(PB3AP, 0);
	}

	return 0;
}

/*************************************************************************
 *  pci_pre_init
 *
 *  This routine is called just prior to registering the hose and gives
 *  the board the opportunity to check things. Returning a value of zero
 *  indicates that things are bad & PCI initialization should be aborted.
 *
 *	Different boards may wish to customize the pci controller structure
 *	(add regions, override default access routines, etc) or perform
 *	certain pre-initialization actions.
 *
 ************************************************************************/
#if defined(CONFIG_PCI)
int pci_pre_init(struct pci_controller *hose)
{
	unsigned long strap;

	/*--------------------------------------------------------------------------+
	 *	The P3P440 board is always configured as the host & requires the
	 *	PCI arbiter to be disabled because it's an PMC module.
	 *--------------------------------------------------------------------------*/
	strap = mfdcr(CPC0_STRP1);
	if (strap & 0x00100000) {
		printf("PCI: CPC0_STRP1[PAE] set.\n");
		return 0;
	}

	return 1;
}
#endif	/* defined(CONFIG_PCI) */

/*************************************************************************
 *  pci_target_init
 *
 *	The bootstrap configuration provides default settings for the pci
 *	inbound map (PIM). But the bootstrap config choices are limited and
 *	may not be sufficient for a given board.
 *
 ************************************************************************/
#if defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT)
void pci_target_init(struct pci_controller *hose)
{
	/*--------------------------------------------------------------------------+
	 * Disable everything
	 *--------------------------------------------------------------------------*/
	out32r(PCIL0_PIM0SA, 0);	/* disable */
	out32r(PCIL0_PIM1SA, 0);	/* disable */
	out32r(PCIL0_PIM2SA, 0);	/* disable */
	out32r(PCIL0_EROMBA, 0);	/* disable expansion rom */

	/*--------------------------------------------------------------------------+
	 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
	 * options to not support sizes such as 128/256 MB.
	 *--------------------------------------------------------------------------*/
	out32r(PCIL0_PIM0LAL, CONFIG_SYS_SDRAM_BASE);
	out32r(PCIL0_PIM0LAH, 0);
	out32r(PCIL0_PIM0SA, ~(gd->ram_size - 1) | 1);

	out32r(PCIL0_BAR0, 0);

	/*--------------------------------------------------------------------------+
	 * Program the board's subsystem id/vendor id
	 *--------------------------------------------------------------------------*/
	out16r(PCIL0_SBSYSVID, CONFIG_SYS_PCI_SUBSYS_VENDORID);
	out16r(PCIL0_SBSYSID, CONFIG_SYS_PCI_SUBSYS_DEVICEID);

	out16r(PCIL0_CMD, in16r(PCIL0_CMD) | PCI_COMMAND_MEMORY);
}
#endif				/* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT) */

/*************************************************************************
 * Override weak is_pci_host()
 *
 *	This routine is called to determine if a pci scan should be
 *	performed. With various hardware environments (especially cPCI and
 *	PPMC) it's insufficient to depend on the state of the arbiter enable
 *	bit in the strap register, or generic host/adapter assumptions.
 *
 *	Rather than hard-code a bad assumption in the general 440 code, the
 *	440 pci code requires the board to decide at runtime.
 *
 *	Return 0 for adapter mode, non-zero for host (monarch) mode.
 *
 *
 ************************************************************************/
#if defined(CONFIG_PCI)
int is_pci_host(struct pci_controller *hose)
{
	if (is_monarch()) {
		wait_for_pci_ready();
		return 1;		/* return 1 for host controller */
	} else {
		return 0;		/* return 0 for adapter controller */
	}
}
#endif				/* defined(CONFIG_PCI) */