blob: e8fbbc493e8126e1cb55ff3b131268acee0cacdf [file] [log] [blame]
Stefan Roese8a316c92005-08-01 16:49:12 +02001/*
2 * (C) Copyright 2002
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
38#undef DEBUG
39#ifdef DEBUG
40#define DEBUGF(x...) printf(x)
41#else
42#define DEBUGF(x...)
43#endif /* DEBUG */
44
45#define BOOT_SMALL_FLASH 32 /* 00100000 */
46#define FLASH_ONBD_N 2 /* 00000010 */
47#define FLASH_SRAM_SEL 1 /* 00000001 */
48
49#define BOOT_SMALL_FLASH_VAL 4
50#define FLASH_ONBD_N_VAL 2
51#define FLASH_SRAM_SEL_VAL 1
52
53static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
54 {0xffc00000, 0xffe00000, 0xff880000}, /* 0:000: configuraton 3 */
55 {0xffc00000, 0xffe00000, 0xff800000}, /* 1:001: configuraton 4 */
56 {0xffc00000, 0xffe00000, 0x00000000}, /* 2:010: configuraton 7 */
57 {0xffc00000, 0xffe00000, 0x00000000}, /* 3:011: configuraton 8 */
58 {0xff800000, 0xffa00000, 0xfff80000}, /* 4:100: configuraton 1 */
59 {0xff800000, 0xffa00000, 0xfff00000}, /* 5:101: configuraton 2 */
60 {0xffc00000, 0xffe00000, 0x00000000}, /* 6:110: configuraton 5 */
61 {0xffc00000, 0xffe00000, 0x00000000} /* 7:111: configuraton 6 */
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);
73
74unsigned long flash_init(void)
75{
76 unsigned long total_b = 0;
77 unsigned long size_b[CFG_MAX_FLASH_BANKS];
78 unsigned char *fpga_base = (unsigned char *)CFG_FPGA_BASE;
79 unsigned char switch_status;
80 unsigned short index = 0;
81 int i;
82
83 /* read FPGA base register FPGA_REG0 */
84 switch_status = *fpga_base;
85
86 /* check the bitmap of switch status */
87 if (switch_status & BOOT_SMALL_FLASH) {
88 index += BOOT_SMALL_FLASH_VAL;
89 }
90 if (switch_status & FLASH_ONBD_N) {
91 index += FLASH_ONBD_N_VAL;
92 }
93 if (switch_status & FLASH_SRAM_SEL) {
94 index += FLASH_SRAM_SEL_VAL;
95 }
96
97 DEBUGF("\n");
98 DEBUGF("FLASH: Index: %d\n", index);
99
100 /* Init: no FLASHes known */
101 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
102 flash_info[i].flash_id = FLASH_UNKNOWN;
103 flash_info[i].sector_count = -1;
104 flash_info[i].size = 0;
105
106 /* check whether the address is 0 */
107 if (flash_addr_table[index][i] == 0) {
108 continue;
109 }
110
111 /* call flash_get_size() to initialize sector address */
112 size_b[i] = flash_get_size((vu_long *)
113 flash_addr_table[index][i],
114 &flash_info[i]);
115 flash_info[i].size = size_b[i];
116 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
117 printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
118 i, size_b[i], size_b[i] << 20);
119 flash_info[i].sector_count = -1;
120 flash_info[i].size = 0;
121 }
122
123 /* Monitor protection ON by default */
124 (void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
125 CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
126 &flash_info[2]);
127#ifdef CFG_ENV_IS_IN_FLASH
128 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
129 CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
130 &flash_info[2]);
131 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
132 CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
133 &flash_info[2]);
134#endif
135
136 total_b += flash_info[i].size;
137 }
138
139 return total_b;
140}