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>
43 #define DEBUGF(x...) printf(x)
48 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
]; /* info for FLASH chips */
51 * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
53 static unsigned long flash_addr_table
[][CFG_MAX_FLASH_BANKS
] = {
54 {0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
55 {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66 */
56 {0x87800001, 0x00000000, 0x00000000}, /* 0:boot from nand flash */
57 {0x87F00000, 0x87F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
58 {0x87F00000, 0x87F80000, 0xFFC00001}, /* 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 {0x87C00001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
66 * include common flash code (for amcc boards)
68 #include "../common/flash.c"
70 /*-----------------------------------------------------------------------
73 static ulong
flash_get_size(vu_long
* addr
, flash_info_t
* info
);
74 static int write_word(flash_info_t
* info
, ulong dest
, ulong data
);
76 /*-----------------------------------------------------------------------
79 unsigned long flash_init(void)
81 unsigned long total_b
= 0;
82 unsigned long size_b
[CFG_MAX_FLASH_BANKS
];
83 unsigned short index
= 0;
86 unsigned long ebc_boot_size
;
87 unsigned long boot_selection
;
89 mfsdr(sdr_pstrp0
, val
);
90 index
= (val
& SDR0_PSTRP0_BOOTSTRAP_MASK
) >> 29;
92 if ((index
== 5) || (index
== 7)) {
94 * Boot Settings in IIC EEprom address 0xA8 or 0xA4
95 * Read Serial Device Strap Register1 in PPC440EP
97 mfsdr(sdr_sdstp1
, val
);
98 boot_selection
= val
& SDR0_SDSTP1_BOOT_SEL_MASK
;
99 ebc_boot_size
= val
& SDR0_SDSTP1_EBC_ROM_BS_MASK
;
101 switch(boot_selection
) {
102 case SDR0_SDSTP1_BOOT_SEL_EBC
:
103 switch(ebc_boot_size
) {
104 case SDR0_SDSTP1_EBC_ROM_BS_16BIT
:
107 case SDR0_SDSTP1_EBC_ROM_BS_8BIT
:
113 case SDR0_SDSTP1_BOOT_SEL_PCI
:
117 case SDR0_SDSTP1_BOOT_SEL_NDFC
:
121 } else if (index
== 0) {
122 if (in8(FPGA_SETTING_REG
) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE
) {
123 index
= 8; /* sram below op code flash -> new index 8 */
128 DEBUGF("FLASH: Index: %d\n", index
);
130 /* Init: no FLASHes known */
131 for (i
= 0; i
< CFG_MAX_FLASH_BANKS
; ++i
) {
132 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
133 flash_info
[i
].sector_count
= -1;
134 flash_info
[i
].size
= 0;
136 /* check whether the address is 0 */
137 if (flash_addr_table
[index
][i
] == 0)
140 DEBUGF("Detection bank %d...\n", i
);
141 /* call flash_get_size() to initialize sector address */
142 size_b
[i
] = flash_get_size((vu_long
*) flash_addr_table
[index
][i
],
144 flash_info
[i
].size
= size_b
[i
];
145 if (flash_info
[i
].flash_id
== FLASH_UNKNOWN
) {
146 printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
147 i
, size_b
[i
], size_b
[i
] << 20);
148 flash_info
[i
].sector_count
= -1;
149 flash_info
[i
].size
= 0;
152 /* Monitor protection ON by default */
153 (void)flash_protect(FLAG_PROTECT_SET
, CFG_MONITOR_BASE
,
154 CFG_MONITOR_BASE
+ CFG_MONITOR_LEN
- 1,
156 #if defined(CONFIG_ENV_IS_IN_FLASH)
157 (void)flash_protect(FLAG_PROTECT_SET
, CFG_ENV_ADDR
,
158 CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1,
160 #if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CFG_ENV_ADDR_REDUND)
161 (void)flash_protect(FLAG_PROTECT_SET
, CFG_ENV_ADDR_REDUND
,
162 CFG_ENV_ADDR_REDUND
+ CFG_ENV_SECT_SIZE
- 1,
167 total_b
+= flash_info
[i
].size
;