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git.ipfire.org Git - people/ms/u-boot.git/blob - board/amcc/ocotea/flash.c
2 * (C) Copyright 2004-2005
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
6 * Add support for Am29F016D and dynamic switch setting.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 * Wait for completion of each sector erase command issued
31 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
36 #include <asm/processor.h>
41 #define DEBUGF(x...) printf(x)
46 #define BOOT_SMALL_FLASH 0x40 /* 01000000 */
47 #define FLASH_ONBD_N 2 /* 00000010 */
48 #define FLASH_SRAM_SEL 1 /* 00000001 */
49 #define FLASH_ONBD_N 2 /* 00000010 */
50 #define FLASH_SRAM_SEL 1 /* 00000001 */
52 #define BOOT_SMALL_FLASH_VAL 4
53 #define FLASH_ONBD_N_VAL 2
54 #define FLASH_SRAM_SEL_VAL 1
56 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
]; /* info for FLASH chips */
58 static unsigned long flash_addr_table
[8][CFG_MAX_FLASH_BANKS
] = {
59 {0xFF800000, 0xFF880000, 0xFFC00000}, /* 0:000: configuraton 4 */
60 {0xFF900000, 0xFF980000, 0xFFC00000}, /* 1:001: configuraton 3 */
61 {0x00000000, 0x00000000, 0x00000000}, /* 2:010: configuraton 8 */
62 {0x00000000, 0x00000000, 0x00000000}, /* 3:011: configuraton 7 */
63 {0xFFE00000, 0xFFF00000, 0xFF800000}, /* 4:100: configuraton 2 */
64 {0xFFF00000, 0xFFF80000, 0xFF800000}, /* 5:101: configuraton 1 */
65 {0x00000000, 0x00000000, 0x00000000}, /* 6:110: configuraton 6 */
66 {0x00000000, 0x00000000, 0x00000000} /* 7:111: configuraton 5 */
70 * include common flash code (for amcc boards)
72 #include "../common/flash.c"
74 /*-----------------------------------------------------------------------
77 static ulong
flash_get_size(vu_long
* addr
, flash_info_t
* info
);
78 static int write_word(flash_info_t
* info
, ulong dest
, ulong data
);
80 /*-----------------------------------------------------------------------
83 unsigned long flash_init(void)
85 unsigned long total_b
= 0;
86 unsigned long size_b
[CFG_MAX_FLASH_BANKS
];
87 unsigned char *fpga_base
= (unsigned char *)CFG_FPGA_BASE
;
88 unsigned char switch_status
;
89 unsigned short index
= 0;
92 /* read FPGA base register FPGA_REG0 */
93 switch_status
= *fpga_base
;
95 /* check the bitmap of switch status */
96 if (switch_status
& BOOT_SMALL_FLASH
) {
97 index
+= BOOT_SMALL_FLASH_VAL
;
99 if (switch_status
& FLASH_ONBD_N
) {
100 index
+= FLASH_ONBD_N_VAL
;
102 if (switch_status
& FLASH_SRAM_SEL
) {
103 index
+= FLASH_SRAM_SEL_VAL
;
107 DEBUGF("FLASH: Index: %d\n", index
);
109 /* Init: no FLASHes known */
110 for (i
= 0; i
< CFG_MAX_FLASH_BANKS
; ++i
) {
111 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
112 flash_info
[i
].sector_count
= -1;
113 flash_info
[i
].size
= 0;
115 /* check whether the address is 0 */
116 if (flash_addr_table
[index
][i
] == 0) {
120 /* call flash_get_size() to initialize sector address */
122 flash_get_size((vu_long
*) flash_addr_table
[index
][i
],
124 flash_info
[i
].size
= size_b
[i
];
125 if (flash_info
[i
].flash_id
== FLASH_UNKNOWN
) {
127 ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
128 i
, size_b
[i
], size_b
[i
] << 20);
129 flash_info
[i
].sector_count
= -1;
130 flash_info
[i
].size
= 0;
133 /* Monitor protection ON by default */
134 (void)flash_protect(FLAG_PROTECT_SET
, CFG_MONITOR_BASE
,
135 CFG_MONITOR_BASE
+ CFG_MONITOR_LEN
- 1,
137 #ifdef CFG_ENV_IS_IN_FLASH
138 (void)flash_protect(FLAG_PROTECT_SET
, CFG_ENV_ADDR
,
139 CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1,
141 (void)flash_protect(FLAG_PROTECT_SET
, CFG_ENV_ADDR_REDUND
,
142 CFG_ENV_ADDR_REDUND
+ CFG_ENV_SECT_SIZE
- 1,
146 total_b
+= flash_info
[i
].size
;