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git01.mediatek.com / filogic / uboot / 247e9d74adbbdfa94edf48bbba19beb514d56c56 / . / board / esd / plu405 / flash.c
blob: 895a8367010aa62c8c1d58e3baf29b152a20a3cc [file] [log] [blame]
stroesee1cb7eb2003-09-12 08:41:56 +0000[diff] [blame]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>
Stefan Roese247e9d72010-09-09 19:18:00 +0200[diff] [blame^]25#include <asm/ppc4xx.h>
stroesee1cb7eb2003-09-12 08:41:56 +0000[diff] [blame]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 */
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200[diff] [blame]51 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
stroesee1cb7eb2003-09-12 08:41:56 +0000[diff] [blame]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 */
Stefan Roese918010a2009-09-09 16:25:29 +0200[diff] [blame]68 mtdcr(EBC0_CFGADDR, PB0CR);
69 pbcr = mfdcr(EBC0_CFGDATA);
70 mtdcr(EBC0_CFGADDR, PB0CR);
stroesee1cb7eb2003-09-12 08:41:56 +0000[diff] [blame]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);
Stefan Roese918010a2009-09-09 16:25:29 +0200[diff] [blame]90 mtdcr(EBC0_CFGDATA, pbcr);
stroesee1cb7eb2003-09-12 08:41:56 +0000[diff] [blame]91
92 /* Monitor protection ON by default */
93 (void)flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200[diff] [blame]94 -CONFIG_SYS_MONITOR_LEN,
stroesee1cb7eb2003-09-12 08:41:56 +0000[diff] [blame]95 0xffffffff,
96 &flash_info[0]);
97
98 flash_info[0].size = size_b0;
99
100 return (size_b0);
101}