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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 0b680206ccf5a4ae6adf759339ba7dc7ce06d284 / . / board / dave / PPChameleonEVB / flash.c
blob: 771151b80b05658430559c0dd4dd01bbbc47f9e5 [file] [log] [blame]
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]1/*
2 * (C) Copyright 2001
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame]5 * SPDX-License-Identifier: GPL-2.0+
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]6 */
7
8#include <common.h>
Stefan Roeseb36df562010-09-09 19:18:00 +0200[diff] [blame]9#include <asm/ppc4xx.h>
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]10#include <asm/processor.h>
11
12/*
13 * include common flash code (for esd boards)
14 */
15#include "../common/flash.c"
16
17/*-----------------------------------------------------------------------
18 * Functions
19 */
20static ulong flash_get_size (vu_long * addr, flash_info_t * info);
21static void flash_get_offsets (ulong base, flash_info_t * info);
22
23/*-----------------------------------------------------------------------
24 */
25
26unsigned long flash_init (void)
27{
28#ifdef __DEBUG_START_FROM_SRAM__
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]29 return CONFIG_SYS_DUMMY_FLASH_SIZE;
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]30#else
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]31 unsigned long size;
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]32 int i;
wdenk42d1f032003-10-15 23:53:47 +0000[diff] [blame]33 uint pbcr;
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]34 unsigned long base;
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]35 int size_val = 0;
36
wdenke55ca7e2004-07-01 21:40:08 +0000[diff] [blame]37 debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
Marek Vasut2e59cb62011-10-21 14:17:29 +0000[diff] [blame]38 debug("[%s, %d] flash_info = 0x%p ...\n", __func__, __LINE__,
39 flash_info);
wdenke55ca7e2004-07-01 21:40:08 +0000[diff] [blame]40
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]41 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]42 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]43 flash_info[i].flash_id = FLASH_UNKNOWN;
44 }
45
46 /* Static FLASH Bank configuration here - FIXME XXX */
47
wdenke55ca7e2004-07-01 21:40:08 +0000[diff] [blame]48 debug("[%s, %d] Calling flash_get_size ...\n", __FUNCTION__, __LINE__);
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]49 size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]50
51 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
52 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]53 size, size<<20);
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]54 }
55
wdenke55ca7e2004-07-01 21:40:08 +0000[diff] [blame]56 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
57
wdenk42d1f032003-10-15 23:53:47 +0000[diff] [blame]58 /* Setup offsets */
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]59 flash_get_offsets (-size, &flash_info[0]);
wdenke55ca7e2004-07-01 21:40:08 +0000[diff] [blame]60 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]61
wdenk42d1f032003-10-15 23:53:47 +0000[diff] [blame]62 /* Re-do sizing to get full correct info */
Stefan Roesed1c3b272009-09-09 16:25:29 +0200[diff] [blame]63 mtdcr(EBC0_CFGADDR, PB0CR);
64 pbcr = mfdcr(EBC0_CFGDATA);
65 mtdcr(EBC0_CFGADDR, PB0CR);
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]66 base = -size;
67 switch (size) {
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]68 case 1 << 20:
69 size_val = 0;
70 break;
71 case 2 << 20:
72 size_val = 1;
73 break;
74 case 4 << 20:
75 size_val = 2;
76 break;
77 case 8 << 20:
78 size_val = 3;
79 break;
80 case 16 << 20:
81 size_val = 4;
82 break;
83 }
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]84 pbcr = (pbcr & 0x0001ffff) | base | (size_val << 17);
Stefan Roesed1c3b272009-09-09 16:25:29 +0200[diff] [blame]85 mtdcr(EBC0_CFGDATA, pbcr);
wdenke55ca7e2004-07-01 21:40:08 +0000[diff] [blame]86 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]87
wdenk42d1f032003-10-15 23:53:47 +0000[diff] [blame]88 /* Monitor protection ON by default */
89 (void)flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]90 -CONFIG_SYS_MONITOR_LEN,
wdenk42d1f032003-10-15 23:53:47 +0000[diff] [blame]91 0xffffffff,
92 &flash_info[0]);
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]93
wdenke55ca7e2004-07-01 21:40:08 +0000[diff] [blame]94 debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]95 flash_info[0].size = size;
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]96
wdenk46a414d2004-06-17 18:50:45 +0000[diff] [blame]97 return (size);
wdenk12f34242003-09-02 22:48:03 +0000[diff] [blame]98#endif
99}