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
|
/*
*(C) Copyright 2005-2007 Netstal Maschinen AG
* Niklaus Giger (Niklaus.Giger@netstal.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form 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 <ppc4xx.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm-ppc/u-boot.h>
#include "../common/nm.h"
DECLARE_GLOBAL_DATA_PTR;
#define HCU_MACH_VERSIONS_REGISTER (0x7C000000 + 0xF00000)
#define SYS_SLOT_ADDRESS (0x7C000000 + 0x400000)
#define HCU3_DIGITAL_IO_REGISTER (0x7C000000 + 0x500000)
#define HCU_SW_INSTALL_REQUESTED 0x10
#undef DEBUG
#if defined(DEBUG)
void show_sdram_registers(void);
#endif
/*
* This function is run very early, out of flash, and before devices are
* initialized. It is called by lib_ppc/board.c:board_init_f by virtue
* of being in the init_sequence array.
*
* The SDRAM has been initialized already -- start.S:start called
* init.S:init_sdram early on -- but it is not yet being used for
* anything, not even stack. So be careful.
*/
#define CPC0_CR0 0xb1 /* Chip control register 0 */
#define CPC0_CR1 0xb2 /* Chip control register 1 */
/* Attention: If you want 1 microsecs times from the external oscillator
* use 0x00804051. But this causes problems with u-boot and linux!
*/
#define CPC0_CR0_VALUE 0x0030103c
#define CPC0_CR1_VALUE 0x00004051
#define CPC0_ECR 0xaa /* Edge condition register */
#define EBC0_CFG 0x23 /* External Peripheral Control Register */
#define CPC0_EIRR 0xb6 /* External Interrupt Register */
int board_early_init_f (void)
{
/*
* Interrupt controller setup for the HCU4 board.
* Note: IRQ 0-15 405GP internally generated; high; level sensitive
* IRQ 16 405GP internally generated; low; level sensitive
* IRQ 17-24 RESERVED/UNUSED
* IRQ 31 (EXT IRQ 6) (unused)
*/
mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr (uicer, 0x00000000); /* disable all ints */
mtdcr (uiccr, 0x00000000); /* set all to be non-critical */
mtdcr (uicpr, 0xFFFFE000); /* set int polarities */
mtdcr (uictr, 0x00000000); /* set int trigger levels */
mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr(CPC0_CR1, CPC0_CR1_VALUE);
mtdcr(CPC0_ECR, 0x60606000);
mtdcr(CPC0_EIRR, 0x7c000000);
return 0;
}
#ifdef CONFIG_BOARD_PRE_INIT
int board_pre_init (void)
{
return board_early_init_f ();
}
#endif
int sys_install_requested(void)
{
u16 *ioValuePtr = (u16 *)HCU3_DIGITAL_IO_REGISTER;
return (in_be16(ioValuePtr) & HCU_SW_INSTALL_REQUESTED) != 0;
}
int checkboard (void)
{
u16 *boardVersReg = (u16 *)HCU_MACH_VERSIONS_REGISTER;
u16 generation = in_be16(boardVersReg) & 0xf0;
u16 index = in_be16(boardVersReg) & 0x0f;
/* Cannot be done, in board_early_init */
mtdcr(CPC0_CR0, CPC0_CR0_VALUE);
/* Force /RTS to active. The board it not wired quite
* correctly to use cts/rtc flow control, so just force the
* /RST active and forget about it.
*/
writeb (readb (0xef600404) | 0x03, 0xef600404);
nm_show_print(generation, index, 0);
return 0;
}
u32 hcu_led_get(void)
{
return (~(in_be32((u32 *)GPIO0_OR)) >> 23) & 0xff;
}
/*
* hcu_led_set value to be placed into the LEDs (max 6 bit)
*/
void hcu_led_set(u32 value)
{
u32 tmp = ~value;
tmp = (tmp << 23) | 0x7FFFFF;
out_be32((u32 *)GPIO0_OR, tmp);
}
/*
* sdram_init - Dummy implementation for start.S, spd_sdram or initdram
* used for HCUx
*/
void sdram_init(void)
{
return;
}
/*
* hcu_get_slot
*/
u32 hcu_get_slot(void)
{
u16 *slot = (u16 *)SYS_SLOT_ADDRESS;
return in_be16(slot) & 0x7f;
}
/*
* get_serial_number
*/
u32 get_serial_number(void)
{
u32 *serial = (u32 *)CFG_FLASH_BASE;
if (in_be32(serial) == 0xffffffff)
return 0;
return in_be32(serial);
}
/*
* misc_init_r.
*/
int misc_init_r(void)
{
common_misc_init_r();
set_params_for_sw_install( sys_install_requested(), "hcu4" );
return 0;
}
long int initdram(int board_type)
{
long dram_size = 0;
u16 *boardVersReg = (u16 *) HCU_MACH_VERSIONS_REGISTER;
u16 generation = in_be16(boardVersReg) & 0xf0;
if (generation == HW_GENERATION_HCU3)
dram_size = 32*1024*1024;
else dram_size = 64*1024*1024;
fixed_hcu4_sdram(dram_size);
#ifdef DEBUG
show_sdram_registers();
#endif
return dram_size;
}
#if defined(CONFIG_POST)
/*
* Returns 1 if keys pressed to start the power-on long-running tests
* Called from board_init_f().
*/
int post_hotkeys_pressed(void)
{
return 0; /* No hotkeys supported */
}
#endif /* CONFIG_POST */
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
}
#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
|
