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wdenk232fe0b2003-09-02 22:48:03 +00001/*
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 +020025#include <asm/ppc4xx.h>
wdenk232fe0b2003-09-02 22:48:03 +000026#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#ifdef __DEBUG_START_FROM_SRAM__
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +020045 return CONFIG_SYS_DUMMY_FLASH_SIZE;
wdenk232fe0b2003-09-02 22:48:03 +000046#else
wdenk9e076902004-06-17 18:50:45 +000047 unsigned long size;
wdenk232fe0b2003-09-02 22:48:03 +000048 int i;
wdenk9c53f402003-10-15 23:53:47 +000049 uint pbcr;
wdenk9e076902004-06-17 18:50:45 +000050 unsigned long base;
wdenk232fe0b2003-09-02 22:48:03 +000051 int size_val = 0;
52
wdenk99874b42004-07-01 21:40:08 +000053 debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
54 debug("[%s, %d] flash_info = 0x%08X ...\n", __FUNCTION__, __LINE__, flash_info);
55
wdenk232fe0b2003-09-02 22:48:03 +000056 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +020057 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenk232fe0b2003-09-02 22:48:03 +000058 flash_info[i].flash_id = FLASH_UNKNOWN;
59 }
60
61 /* Static FLASH Bank configuration here - FIXME XXX */
62
wdenk99874b42004-07-01 21:40:08 +000063 debug("[%s, %d] Calling flash_get_size ...\n", __FUNCTION__, __LINE__);
wdenk9e076902004-06-17 18:50:45 +000064 size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
wdenk232fe0b2003-09-02 22:48:03 +000065
66 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
67 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
wdenk9e076902004-06-17 18:50:45 +000068 size, size<<20);
wdenk232fe0b2003-09-02 22:48:03 +000069 }
70
wdenk99874b42004-07-01 21:40:08 +000071 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
72
wdenk9c53f402003-10-15 23:53:47 +000073 /* Setup offsets */
wdenk9e076902004-06-17 18:50:45 +000074 flash_get_offsets (-size, &flash_info[0]);
wdenk99874b42004-07-01 21:40:08 +000075 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
wdenk232fe0b2003-09-02 22:48:03 +000076
wdenk9c53f402003-10-15 23:53:47 +000077 /* Re-do sizing to get full correct info */
Stefan Roese918010a2009-09-09 16:25:29 +020078 mtdcr(EBC0_CFGADDR, PB0CR);
79 pbcr = mfdcr(EBC0_CFGDATA);
80 mtdcr(EBC0_CFGADDR, PB0CR);
wdenk9e076902004-06-17 18:50:45 +000081 base = -size;
82 switch (size) {
wdenk232fe0b2003-09-02 22:48:03 +000083 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 }
wdenk9e076902004-06-17 18:50:45 +000099 pbcr = (pbcr & 0x0001ffff) | base | (size_val << 17);
Stefan Roese918010a2009-09-09 16:25:29 +0200100 mtdcr(EBC0_CFGDATA, pbcr);
wdenk99874b42004-07-01 21:40:08 +0000101 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
wdenk232fe0b2003-09-02 22:48:03 +0000102
wdenk9c53f402003-10-15 23:53:47 +0000103 /* Monitor protection ON by default */
104 (void)flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200105 -CONFIG_SYS_MONITOR_LEN,
wdenk9c53f402003-10-15 23:53:47 +0000106 0xffffffff,
107 &flash_info[0]);
wdenk232fe0b2003-09-02 22:48:03 +0000108
wdenk99874b42004-07-01 21:40:08 +0000109 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
wdenk9e076902004-06-17 18:50:45 +0000110 flash_info[0].size = size;
wdenk232fe0b2003-09-02 22:48:03 +0000111
wdenk9e076902004-06-17 18:50:45 +0000112 return (size);
wdenk232fe0b2003-09-02 22:48:03 +0000113#endif
114}