]> git.ipfire.org Git - people/ms/u-boot.git/blob - board/dave/PPChameleonEVB/flash.c
rename CFG_ macros to CONFIG_SYS
[people/ms/u-boot.git] / board / dave / PPChameleonEVB / flash.c
1 /*
2 * (C) Copyright 2001
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24 #include <common.h>
25 #include <ppc4xx.h>
26 #include <asm/processor.h>
27
28 /*
29 * include common flash code (for esd boards)
30 */
31 #include "../common/flash.c"
32
33 /*-----------------------------------------------------------------------
34 * Functions
35 */
36 static ulong flash_get_size (vu_long * addr, flash_info_t * info);
37 static void flash_get_offsets (ulong base, flash_info_t * info);
38
39 /*-----------------------------------------------------------------------
40 */
41
42 unsigned long flash_init (void)
43 {
44 #ifdef __DEBUG_START_FROM_SRAM__
45 return CONFIG_SYS_DUMMY_FLASH_SIZE;
46 #else
47 unsigned long size;
48 int i;
49 uint pbcr;
50 unsigned long base;
51 int size_val = 0;
52
53 debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
54 debug("[%s, %d] flash_info = 0x%08X ...\n", __FUNCTION__, __LINE__, flash_info);
55
56 /* Init: no FLASHes known */
57 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
58 flash_info[i].flash_id = FLASH_UNKNOWN;
59 }
60
61 /* Static FLASH Bank configuration here - FIXME XXX */
62
63 debug("[%s, %d] Calling flash_get_size ...\n", __FUNCTION__, __LINE__);
64 size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
65
66 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
67 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
68 size, size<<20);
69 }
70
71 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
72
73 /* Setup offsets */
74 flash_get_offsets (-size, &flash_info[0]);
75 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
76
77 /* Re-do sizing to get full correct info */
78 mtdcr(ebccfga, pb0cr);
79 pbcr = mfdcr(ebccfgd);
80 mtdcr(ebccfga, pb0cr);
81 base = -size;
82 switch (size) {
83 case 1 << 20:
84 size_val = 0;
85 break;
86 case 2 << 20:
87 size_val = 1;
88 break;
89 case 4 << 20:
90 size_val = 2;
91 break;
92 case 8 << 20:
93 size_val = 3;
94 break;
95 case 16 << 20:
96 size_val = 4;
97 break;
98 }
99 pbcr = (pbcr & 0x0001ffff) | base | (size_val << 17);
100 mtdcr(ebccfgd, pbcr);
101 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
102
103 /* Monitor protection ON by default */
104 (void)flash_protect(FLAG_PROTECT_SET,
105 -CONFIG_SYS_MONITOR_LEN,
106 0xffffffff,
107 &flash_info[0]);
108
109 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
110 flash_info[0].size = size;
111
112 return (size);
113 #endif
114 }