source: SVN/rincon/u-boot/board/esd/pci405/flash.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.5 KB
Line 
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 */
36static ulong flash_get_size (vu_long * addr, flash_info_t * info);
37static void flash_get_offsets (ulong base, flash_info_t * info);
38
39/*-----------------------------------------------------------------------
40 */
41
42unsigned long flash_init (void)
43{
44        unsigned long size_b0;
45        int i;
46        uint pbcr;
47        unsigned long base_b0;
48        int size_val = 0;
49
50        /* Init: no FLASHes known */
51        for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
52                flash_info[i].flash_id = FLASH_UNKNOWN;
53        }
54
55        /* Static FLASH Bank configuration here - FIXME XXX */
56
57        size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
58
59        if (flash_info[0].flash_id == FLASH_UNKNOWN) {
60                printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
61                        size_b0, size_b0<<20);
62        }
63
64        /* Setup offsets */
65        flash_get_offsets (-size_b0, &flash_info[0]);
66
67        /* Re-do sizing to get full correct info */
68        mtdcr(ebccfga, pb0cr);
69        pbcr = mfdcr(ebccfgd);
70        mtdcr(ebccfga, pb0cr);
71        base_b0 = -size_b0;
72        switch (size_b0) {
73        case 1 << 20:
74                size_val = 0;
75                break;
76        case 2 << 20:
77                size_val = 1;
78                break;
79        case 4 << 20:
80                size_val = 2;
81                break;
82        case 8 << 20:
83                size_val = 3;
84                break;
85        case 16 << 20:
86                size_val = 4;
87                break;
88        }
89        pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17);
90        mtdcr(ebccfgd, pbcr);
91
92        /* Monitor protection ON by default */
93        (void)flash_protect(FLAG_PROTECT_SET,
94                            -monitor_flash_len,
95                            0xffffffff,
96                            &flash_info[0]);
97
98        flash_info[0].size = size_b0;
99
100        return (size_b0);
101}
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