source: SVN/rincon/u-boot/board/netstal/hcu4/hcu4.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 5.2 KB
Line 
1/*
2 *(C) Copyright 2005-2008 Netstal Maschinen AG
3 *    Niklaus Giger (Niklaus.Giger@netstal.com)
4 *
5 *    This source code is free software; you can redistribute it
6 *    and/or modify it in source code form under the terms of the GNU
7 *    General Public License as published by the Free Software
8 *    Foundation; either version 2 of the License, or (at your option)
9 *    any later version.
10 *
11 *    This program is distributed in the hope that it will be useful,
12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *    GNU General Public License for more details.
15 *
16 *    You should have received a copy of the GNU General Public License
17 *    along with this program; if not, write to the Free Software
18 *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19 */
20
21#include  <common.h>
22#include  <ppc4xx.h>
23#include  <asm/processor.h>
24#include  <asm/io.h>
25#include  <asm-ppc/u-boot.h>
26#include  "../common/nm.h"
27
28DECLARE_GLOBAL_DATA_PTR;
29
30#define HCU_MACH_VERSIONS_REGISTER      (0x7C000000 + 0xF00000)
31#define HCU_SLOT_ADDRESS                (0x7C000000 + 0x400000)
32#define HCU_DIGITAL_IO_REGISTER         (0x7C000000 + 0x500000)
33#define HCU_SW_INSTALL_REQUESTED        0x10
34
35/*
36 * This function is run very early, out of flash, and before devices are
37 * initialized. It is called by lib_ppc/board.c:board_init_f by virtue
38 * of being in the init_sequence array.
39 *
40 * The SDRAM has been initialized already -- start.S:start called
41 * init.S:init_sdram early on -- but it is not yet being used for
42 * anything, not even stack. So be careful.
43 */
44
45/* Attention: If you want 1 microsecs times from the external oscillator
46 * 0x00004051 is okay for u-boot/linux, but different from old vxworks values
47 * 0x00804051 causes problems with u-boot and linux!
48 */
49#define CPC0_CR0_VALUE  0x0030103c
50#define CPC0_CR1_VALUE  0x00004051
51
52int board_early_init_f (void)
53{
54        /*
55         * Interrupt controller setup for the HCU4 board.
56         * Note: IRQ 0-15  405GP internally generated; high; level sensitive
57         *       IRQ 16    405GP internally generated; low; level sensitive
58         *      IRQ 17-24 RESERVED/UNUSED
59         *      IRQ 31 (EXT IRQ 6) (unused)
60         */
61        mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
62        mtdcr(uicer, 0x00000000); /* disable all ints */
63        mtdcr(uiccr, 0x00000000); /* set all to be non-critical */
64        mtdcr(uicpr, 0xFFFFE000); /* set int polarities */
65        mtdcr(uictr, 0x00000000); /* set int trigger levels */
66        mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
67
68        mtdcr(CPC0_CR1, CPC0_CR1_VALUE);
69        mtdcr(CPC0_ECR, 0x60606000);
70        mtdcr(CPC0_EIRR, 0x7C000000);
71
72        return 0;
73}
74
75#ifdef CONFIG_BOARD_PRE_INIT
76int board_pre_init (void)
77{
78        return board_early_init_f ();
79}
80#endif
81
82int sys_install_requested(void)
83{
84        u16 ioValue = in_be16((u16 *)HCU_DIGITAL_IO_REGISTER);
85        return (ioValue & HCU_SW_INSTALL_REQUESTED) != 0;
86}
87
88int checkboard (void)
89{
90        u16 boardVersReg = in_be16((u16 *)HCU_MACH_VERSIONS_REGISTER);
91        u16 generation = boardVersReg & 0xf0;
92        u16 index      = boardVersReg & 0x0f;
93
94        /* Cannot be done in board_early_init */
95        mtdcr(cntrl0,  CPC0_CR0_VALUE);
96
97        /* Force /RTS to active. The board it not wired quite
98         *  correctly to use cts/rtc flow control, so just force the
99         *  /RST active and forget about it.
100         */
101        writeb (readb (0xef600404) | 0x03, 0xef600404);
102        nm_show_print(generation, index, 0);
103
104        return 0;
105}
106
107u32 hcu_led_get(void)
108{
109        return (~(in_be32((u32 *)GPIO0_OR)) >> 23) & 0xff;
110}
111
112/*
113 * hcu_led_set  value to be placed into the LEDs (max 6 bit)
114 */
115void hcu_led_set(u32 value)
116{
117        u32   tmp = ~value;
118
119        tmp = (tmp << 23) | 0x7FFFFF;
120        out_be32((u32 *)GPIO0_OR, tmp);
121}
122
123/*
124 * hcu_get_slot
125 */
126u32 hcu_get_slot(void)
127{
128        u16 slot = in_be16((u16 *)HCU_SLOT_ADDRESS);
129        return slot & 0x7f;
130}
131
132/*
133 * get_serial_number
134 */
135u32 get_serial_number(void)
136{
137        u32 serial = in_be32((u32 *)CFG_FLASH_BASE);
138
139        if (serial == 0xffffffff)
140                return 0;
141
142        return serial;
143}
144
145
146/*
147 * misc_init_r.
148 */
149
150int misc_init_r(void)
151{
152        common_misc_init_r();
153        set_params_for_sw_install( sys_install_requested(), "hcu4" );
154        return 0;
155}
156
157phys_size_t initdram(int board_type)
158{
159        long dram_size = 0;
160        u16 boardVersReg = in_be16((u16 *)HCU_MACH_VERSIONS_REGISTER);
161        u16 generation = boardVersReg & 0xf0;
162        u16 index      = boardVersReg & 0x0f;
163
164        if (generation == HW_GENERATION_HCU3 && index < 0xf)
165                dram_size = 32 << 20;   /* 32 MB - RAM */
166        else
167                dram_size = 64 << 20;   /* 64 MB - RAM */
168        init_ppc405_sdram(dram_size);
169
170#ifdef DEBUG
171        show_sdram_registers();
172#endif
173
174        return dram_size;
175}
176
177#if defined(CONFIG_POST)
178/*
179 * Returns 1 if keys pressed to start the power-on long-running tests
180 * Called from board_init_f().
181 */
182int post_hotkeys_pressed(void)
183{
184        return 0;       /* No hotkeys supported */
185}
186#endif /* CONFIG_POST */
187
188#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
189void ft_board_setup(void *blob, bd_t *bd)
190{
191        ft_cpu_setup(blob, bd);
192
193}
194#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
195
196/*
197 * Hardcoded flash setup:
198 * Flash 0 is a non-CFI AMD AM29F040 flash, 8 bit flash / 8 bit bus.
199 */
200ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
201{
202        if (banknum == 0) {     /* non-CFI boot flash */
203                info->portwidth = 1;
204                info->chipwidth = 1;
205                info->interface = FLASH_CFI_X8;
206                return 1;
207        } else
208                return 0;
209}
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