blob: 97a4b988d54449eb04fced8cddfd2dff47b2a596 [file] [log] [blame]
Stefan Roese17f50f222005-08-04 17:09:16 +02001/*
2 * (C) Copyright 2004-2005
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
6 * Add support for Am29F016D and dynamic switch setting.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27/*
28 * Modified 4/5/2001
29 * Wait for completion of each sector erase command issued
30 * 4/5/2001
31 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
32 */
33
34#include <common.h>
35#include <ppc4xx.h>
36#include <asm/processor.h>
37#include <ppc440.h>
38#include "bamboo.h"
39
40#undef DEBUG
41
42#ifdef DEBUG
43#define DEBUGF(x...) printf(x)
44#else
45#define DEBUGF(x...)
46#endif /* DEBUG */
47
48flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
49
50/*
51 * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
52 */
53static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
54 {0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
55 {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66 */
56 {0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash */
57 {0x87800000, 0x87880000, 0xFF800001}, /* 3:boot from big flash 33*/
58 {0x87800000, 0x87880000, 0xFF800001}, /* 4:boot from big flash 66*/
59 {0x00000000, 0x00000000, 0x00000000}, /* 5:boot from */
60 {0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66 */
61 {0x00000000, 0x00000000, 0x00000000}, /* 7:boot from */
62};
63
64/*
65 * include common flash code (for amcc boards)
66 */
67#include "../common/flash.c"
68
69/*-----------------------------------------------------------------------
70 * Functions
71 */
72static ulong flash_get_size(vu_long * addr, flash_info_t * info);
73static int write_word(flash_info_t * info, ulong dest, ulong data);
74
75/*-----------------------------------------------------------------------
76 */
77
78unsigned long flash_init(void)
79{
80 unsigned long total_b = 0;
81 unsigned long size_b[CFG_MAX_FLASH_BANKS];
82 unsigned short index = 0;
83 int i;
84 unsigned long val;
85 unsigned long ebc_boot_size;
86 unsigned long boot_selection;
87
88 mfsdr(sdr_pstrp0, val);
89 index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 29;
90
91 if ((index == 5) || (index == 7)) {
92 /*
93 * Boot Settings in IIC EEprom address 0xA8 or 0xA4
94 * Read Serial Device Strap Register1 in PPC440EP
95 */
96 mfsdr(sdr_sdstp1, val);
97 boot_selection = val & SDR0_SDSTP1_BOOT_SEL_MASK;
98 ebc_boot_size = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
99
100 switch(boot_selection) {
101 case SDR0_SDSTP1_BOOT_SEL_EBC:
102 switch(ebc_boot_size) {
103 case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
104 index = 3;
105 break;
106 case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
107 index = 0;
108 break;
109 }
110 break;
111
112 case SDR0_SDSTP1_BOOT_SEL_PCI:
113 index = 1;
114 break;
115
116 case SDR0_SDSTP1_BOOT_SEL_NDFC:
117 index = 2;
118 break;
119 }
120 }
121
122 DEBUGF("\n");
123 DEBUGF("FLASH: Index: %d\n", index);
124
125 /* Init: no FLASHes known */
126 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
127 flash_info[i].flash_id = FLASH_UNKNOWN;
128 flash_info[i].sector_count = -1;
129 flash_info[i].size = 0;
130
131 /* check whether the address is 0 */
132 if (flash_addr_table[index][i] == 0) {
133 continue;
134 }
135
136 /* call flash_get_size() to initialize sector address */
137 size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
138 &flash_info[i]);
139 flash_info[i].size = size_b[i];
140 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
141 printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
142 i, size_b[i], size_b[i] << 20);
143 flash_info[i].sector_count = -1;
144 flash_info[i].size = 0;
145 }
146
147 /* Monitor protection ON by default */
148 (void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
149 CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
150 &flash_info[i]);
151#if defined(CFG_ENV_IS_IN_FLASH)
152 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
153 CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
154 &flash_info[i]);
155#if defined(CFG_ENV_IS_IN_FLASH) && defined(CFG_ENV_ADDR_REDUND)
156 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
157 CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
158 &flash_info[i]);
159#endif
160#endif
161
162 total_b += flash_info[i].size;
163 }
164
165 return total_b;
166}