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EXBITGEN: drop support for unmaintained board

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The EXBITGEN board has not been maintained for a long time; it has
build problems, but no hardware is available any more for testing.

Drop support for this board.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Wolfgang Denk 2010-02-01 11:36:29 +01:00
parent 9461a939ca
commit d0750bc9e5
9 changed files with 0 additions and 1877 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
MAINTAINERS
View File

@ -134,8 +134,6 @@ Wolfgang Denk <wd@denx.de>
PCIPPC2 MPC750
PCIPPC6 MPC750
EXBITGEN PPC405GP
Jon Diekema <jon.diekema@smiths-aerospace.com>
sbc8260 MPC8260

1
MAKEALL
View File

@ -213,7 +213,6 @@ LIST_4xx=" \
DU440 \
ebony \
ERIC \
EXBITGEN \
fx12mm \
G2000 \
gdppc440etx \

3
Makefile
View File

@ -1336,9 +1336,6 @@ ebony_config: unconfig
ERIC_config: unconfig
@$(MKCONFIG) $(@:_config=) ppc ppc4xx eric
EXBITGEN_config: unconfig
@$(MKCONFIG) $(@:_config=) ppc ppc4xx exbitgen
fx12mm_flash_config: unconfig
@mkdir -p $(obj)include $(obj)board/xilinx/ppc405-generic
@mkdir -p $(obj)include $(obj)board/avnet/fx12mm

52
board/exbitgen/Makefile
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@ -1,52 +0,0 @@
#
# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
COBJS = $(BOARD).o flash.o
SOBJS = init.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
SOBJS := $(addprefix $(obj),$(SOBJS))
$(LIB): $(OBJS) $(SOBJS)
$(AR) $(ARFLAGS) $@ $^
clean:
rm -f $(SOBJS) $(OBJS)
distclean: clean
rm -f $(LIB) core *.bak $(obj).depend
#########################################################################
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
#########################################################################

33
board/exbitgen/config.mk
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@ -1,33 +0,0 @@
#
# (C) Copyright 2000
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
#
# ExbitGen board
#
LDFLAGS += $(LINKER_UNDEFS)
TEXT_BASE := 0xFFF80000
#TEXT_BASE := 0x00100000
PLATFORM_RELFLAGS := $(PLATFORM_RELFLAGS)

126
board/exbitgen/exbitgen.c
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@ -1,126 +0,0 @@
#include <common.h>
#include <asm/u-boot.h>
#include <asm/processor.h>
#include "exbitgen.h"
void sdram_init(void);
/* ************************************************************************ */
int board_early_init_f (void)
/* ------------------------------------------------------------------------ --
* Purpose :
* Remarks :
* Restrictions:
* See also :
* Example :
* ************************************************************************ */
{
unsigned long i;
/*-------------------------------------------------------------------------+
| Interrupt controller setup for the Walnut board.
| Note: IRQ 0-15 405GP internally generated; active high; level sensitive
| IRQ 16 405GP internally generated; active low; level sensitive
| IRQ 17-24 RESERVED
| IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive
| IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive
| IRQ 27 (EXT IRQ 2) Not Used
| IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
| IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
| IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
| IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
| Note for Walnut board:
| An interrupt taken for the FPGA (IRQ 25) indicates that either
| the Mouse, Keyboard, IRDA, or External Expansion caused the
| interrupt. The FPGA must be read to determine which device
| caused the interrupt. The default setting of the FPGA clears
|
+-------------------------------------------------------------------------*/
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
mtdcr (UIC0ER, 0x00000000); /* disable all ints */
mtdcr (UIC0CR, 0x00000020); /* set all but FPGA SMI to be non-critical */
mtdcr (UIC0PR, 0xFFFFFF90); /* set int polarities */
mtdcr (UIC0TR, 0x10000000); /* set int trigger levels */
mtdcr (UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority */
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
/* Perform reset of PHY connected to PPC via register in CPLD */
out8 (PHY_CTRL_ADDR, 0x2e); /* activate nRESET,FDX,F100,ANEN, enable output */
for (i = 0; i < 10000000; i++) {
;
}
out8 (PHY_CTRL_ADDR, 0x2f); /* deactivate nRESET */
return 0;
}
/* ************************************************************************ */
int checkboard (void)
/* ------------------------------------------------------------------------ --
* Purpose :
* Remarks :
* Restrictions:
* See also :
* Example :
* ************************************************************************ */
{
printf ("Exbit H/W id: %d\n", in8 (HW_ID_ADDR));
return (0);
}
/* ************************************************************************ */
phys_size_t initdram (int board_type)
/* ------------------------------------------------------------------------ --
* Purpose : Determines size of mounted DRAM.
* Remarks : Size is determined by reading SDRAM configuration registers as
* set up by sdram_init.
* Restrictions:
* See also :
* Example :
* ************************************************************************ */
{
ulong tot_size;
ulong bank_size;
ulong tmp;
/*
* ToDo: Move the asm init routine sdram_init() to this C file,
* or even better use some common ppc4xx code available
* in cpu/ppc4xx
*/
sdram_init();
tot_size = 0;
mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
tmp = mfdcr (SDRAM0_CFGDATA);
if (tmp & 0x00000001) {
bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
tot_size += bank_size;
}
mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR);
tmp = mfdcr (SDRAM0_CFGDATA);
if (tmp & 0x00000001) {
bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
tot_size += bank_size;
}
mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR);
tmp = mfdcr (SDRAM0_CFGDATA);
if (tmp & 0x00000001) {
bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
tot_size += bank_size;
}
mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR);
tmp = mfdcr (SDRAM0_CFGDATA);
if (tmp & 0x00000001) {
bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
tot_size += bank_size;
}
return tot_size;
}

52
board/exbitgen/exbitgen.h
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@ -1,52 +0,0 @@
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#define GPIO_CPU_LED GPIO_3
#define CPLD_BASE 0x10000000 /* t.b.m. */
#define DEBUG_LEDS_ADDR CPLD_BASE + 0x01
#define HW_ID_ADDR CPLD_BASE + 0x02
#define DIP_SWITCH_ADDR CPLD_BASE + 0x04
#define PHY_CTRL_ADDR CPLD_BASE + 0x05
#define SPI_OUT_ADDR CPLD_BASE + 0x07
#define SPI_IN_ADDR CPLD_BASE + 0x08
#define MDIO_OUT_ADDR CPLD_BASE + 0x09
#define MDIO_IN_ADDR CPLD_BASE + 0x0A
#define MISC_OUT_ADDR CPLD_BASE + 0x0B
/* Addresses used on I2C bus */
#define LM75_CHIP_ADDR 0x9C
#define LM75_CPU_ADDR 0x9E
#define SDRAM_SPD_ADDR 0xA0
#define SDRAM_SPD_WRITE_ADDRESS (SDRAM_SPD_ADDR)
#define SDRAM_SPD_READ_ADDRESS (SDRAM_SPD_ADDR+1)
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif

597
board/exbitgen/flash.c
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@ -1,597 +0,0 @@
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Modified 4/5/2001
* Wait for completion of each sector erase command issued
* 4/5/2001
* Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
*/
#include <common.h>
#include <asm/u-boot.h>
#include <asm/processor.h>
#include <ppc4xx.h>
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
/*-----------------------------------------------------------------------
* Functions
*/
static ulong flash_get_size (vu_long *addr, flash_info_t *info);
static int write_word (flash_info_t *info, ulong dest, ulong data);
#ifdef MEIGSBOARD_ONBOARD_FLASH /* onboard = 2MB */
# ifdef CONFIG_EXBITGEN
# define FLASH_WORD_SIZE unsigned long
# endif
#else /* Meigsboard socket flash = 512KB */
# ifdef CONFIG_EXBITGEN
# define FLASH_WORD_SIZE unsigned char
# endif
#endif
#ifdef CONFIG_EXBITGEN
#define ADDR0 0x5555
#define ADDR1 0x2aaa
#define FLASH_WORD_SIZE unsigned char
#endif
/*-----------------------------------------------------------------------
*/
unsigned long flash_init (void)
{
unsigned long bank_size;
unsigned long tot_size;
unsigned long bank_addr;
int i;
/* Init: no FLASHes known */
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
flash_info[i].size = 0;
}
tot_size = 0;
/* Detect Boot Flash */
bank_addr = CONFIG_SYS_FLASH0_BASE;
bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[0]);
if (bank_size > 0) {
(void)flash_protect(FLAG_PROTECT_CLEAR,
bank_addr,
bank_addr + bank_size - 1,
&flash_info[0]);
}
if (flash_info[0].flash_id == FLASH_UNKNOWN) {
printf ("## Unknown FLASH on Boot Flash Bank\n");
}
flash_info[0].size = bank_size;
tot_size += bank_size;
/* Detect Application Flash */
bank_addr = CONFIG_SYS_FLASH1_BASE;
for (i = 1; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[i]);
if (flash_info[i].flash_id == FLASH_UNKNOWN) {
break;
}
if (bank_size > 0) {
(void)flash_protect(FLAG_PROTECT_CLEAR,
bank_addr,
bank_addr + bank_size - 1,
&flash_info[i]);
}
flash_info[i].size = bank_size;
tot_size += bank_size;
bank_addr += bank_size;
}
if (flash_info[1].flash_id == FLASH_UNKNOWN) {
printf ("## Unknown FLASH on Application Flash Bank\n");
}
/* Protect monitor and environment sectors */
#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
flash_protect(FLAG_PROTECT_SET,
CONFIG_SYS_MONITOR_BASE,
CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
&flash_info[0]);
#if 0xfffffffc >= CONFIG_SYS_FLASH0_BASE
#if 0xfffffffc <= CONFIG_SYS_FLASH0_BASE + CONFIG_SYS_FLASH0_SIZE - 1
flash_protect(FLAG_PROTECT_SET,
0xfffffffc, 0xffffffff,
&flash_info[0]);
#endif
#endif
#endif
#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
flash_protect(FLAG_PROTECT_SET,
CONFIG_ENV_ADDR,
CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
&flash_info[0]);
#endif
return tot_size;
}
/*-----------------------------------------------------------------------
*/
void flash_print_info (flash_info_t *info)
{
int i;
if (info->flash_id == FLASH_UNKNOWN) {
printf ("missing or unknown FLASH type\n");
return;
}
switch (info->flash_id & FLASH_VENDMASK) {
case FLASH_MAN_AMD: printf ("AMD "); break;
case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
case FLASH_MAN_SST: printf ("SST "); break;
default: printf ("Unknown Vendor "); break;
}
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n");
break;
case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
break;
case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
break;
case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
break;
case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
break;
case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
break;
case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
break;
case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
break;
case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
break;
case FLASH_AMDLV033C: printf ("AM29LV033C (32 Mbit, uniform sector size)\n");
break;
case FLASH_AMDLV065D: printf ("AM29LV065D (64 Mbit, uniform sector size)\n");
break;
case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
break;
case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
break;
case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
break;
default: printf ("Unknown Chip Type\n");
break;
}
printf (" Size: %ld KB in %d Sectors\n",
info->size >> 10, info->sector_count);
printf (" Sector Start Addresses:");
for (i=0; i<info->sector_count; ++i) {
if ((i % 5) == 0)
printf ("\n ");
printf (" %08lX%s",
info->start[i],
info->protect[i] ? " (RO)" : " "
);
}
printf ("\n");
}
/*-----------------------------------------------------------------------
*/
/*-----------------------------------------------------------------------
*/
/*
* The following code cannot be run from FLASH!
*/
static ulong flash_get_size (vu_long *addr, flash_info_t *info)
{
short i;
FLASH_WORD_SIZE value;
ulong base = (ulong)addr;
volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;
/* Write auto select command: read Manufacturer ID */
addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
value = addr2[0];
switch (value) {
case (FLASH_WORD_SIZE)AMD_MANUFACT:
info->flash_id = FLASH_MAN_AMD;
break;
case (FLASH_WORD_SIZE)FUJ_MANUFACT:
info->flash_id = FLASH_MAN_FUJ;
break;
case (FLASH_WORD_SIZE)SST_MANUFACT:
info->flash_id = FLASH_MAN_SST;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* no or unknown flash */
}
value = addr2[1]; /* device ID */
switch (value) {
case (FLASH_WORD_SIZE)AMD_ID_F040B:
info->flash_id += FLASH_AM040;
info->sector_count = 8;
info->size = 0x0080000; /* => 512 ko */
break;
case (FLASH_WORD_SIZE)AMD_ID_LV400T:
info->flash_id += FLASH_AM400T;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 0.5 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV400B:
info->flash_id += FLASH_AM400B;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 0.5 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV800T:
info->flash_id += FLASH_AM800T;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV800B:
info->flash_id += FLASH_AM800B;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV160T:
info->flash_id += FLASH_AM160T;
info->sector_count = 35;
info->size = 0x00200000;
break; /* => 2 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV160B:
info->flash_id += FLASH_AM160B;
info->sector_count = 35;
info->size = 0x00200000;
break; /* => 2 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV033C:
info->flash_id += FLASH_AMDLV033C;
info->sector_count = 64;
info->size = 0x00400000;
break; /* => 4 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV065D:
info->flash_id += FLASH_AMDLV065D;
info->sector_count = 128;
info->size = 0x00800000;
break; /* => 8 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV320T:
info->flash_id += FLASH_AM320T;
info->sector_count = 67;
info->size = 0x00400000;
break; /* => 4 MB */
case (FLASH_WORD_SIZE)AMD_ID_LV320B:
info->flash_id += FLASH_AM320B;
info->sector_count = 67;
info->size = 0x00400000;
break; /* => 4 MB */
case (FLASH_WORD_SIZE)SST_ID_xF800A:
info->flash_id += FLASH_SST800A;
info->sector_count = 16;
info->size = 0x00100000;
break; /* => 1 MB */
case (FLASH_WORD_SIZE)SST_ID_xF160A:
info->flash_id += FLASH_SST160A;
info->sector_count = 32;
info->size = 0x00200000;
break; /* => 2 MB */
case (FLASH_WORD_SIZE)SST_ID_xF040:
info->flash_id += FLASH_SST040;
info->sector_count = 128;
info->size = 0x00080000;
break; /* => 512KB */
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
/* set up sector start address table */
if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
(info->flash_id == FLASH_AM040) ||
(info->flash_id == FLASH_AMDLV033C) ||
(info->flash_id == FLASH_AMDLV065D)) {
ulong sectsize = info->size / info->sector_count;
for (i = 0; i < info->sector_count; i++)
info->start[i] = base + (i * sectsize);
} else {
if (info->flash_id & FLASH_BTYPE) {
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00004000;
info->start[2] = base + 0x00006000;
info->start[3] = base + 0x00008000;
for (i = 4; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000) - 0x00030000;
}
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00010000;
}
}
}
/* check for protected sectors */
for (i = 0; i < info->sector_count; i++) {
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
/* D0 = 1 if protected */
addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
info->protect[i] = 0;
else
info->protect[i] = addr2[2] & 1;
}
/* switch to the read mode */
if (info->flash_id != FLASH_UNKNOWN) {
addr2 = (FLASH_WORD_SIZE *)info->start[0];
*addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
}
return (info->size);
}
/*-----------------------------------------------------------------------
*/
int flash_erase (flash_info_t *info, int s_first, int s_last)
{
volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
volatile FLASH_WORD_SIZE *addr2;
int flag, prot, sect;
ulong start, now, last;
if ((s_first < 0) || (s_first > s_last)) {
if (info->flash_id == FLASH_UNKNOWN) {
printf ("- missing\n");
} else {
printf ("- no sectors to erase\n");
}
return 1;
}
if (info->flash_id == FLASH_UNKNOWN) {
printf ("Can't erase unknown flash type - aborted\n");
return 1;
}
prot = 0;
for (sect=s_first; sect<=s_last; ++sect) {
if (info->protect[sect]) {
prot++;
}
}
if (prot) {
printf ("- Warning: %d protected sectors will not be erased!\n",
prot);
} else {
printf ("\n");
}
start = get_timer (0);
last = start;
/* Start erase on unprotected sectors */
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
addr2[0] = (FLASH_WORD_SIZE)0x00300030;
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* wait at least 80us - let's wait 1 ms */
udelay (1000);
while ((addr2[0] & 0x00800080) !=
(FLASH_WORD_SIZE) 0x00800080) {
if ((now=get_timer(start)) >
CONFIG_SYS_FLASH_ERASE_TOUT) {
printf ("Timeout\n");
addr[0] = (FLASH_WORD_SIZE)0x00F000F0;
return 1;
}
/* show that we're waiting */
if ((now - last) > 1000) { /* every second */
putc ('.');
last = now;
}
}
addr[0] = (FLASH_WORD_SIZE)0x00F000F0;
}
}
printf (" done\n");
return 0;
}
/*-----------------------------------------------------------------------
* Copy memory to flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
{
ulong cp, wp, data;
int i, l, rc;
wp = (addr & ~3); /* get lower word aligned address */
/*
* handle unaligned start bytes
*/
if ((l = addr - wp) != 0) {
data = 0;
for (i=0, cp=wp; i<l; ++i, ++cp) {
data = (data << 8) | (*(uchar *)cp);
}
for (; i<4 && cnt>0; ++i) {
data = (data << 8) | *src++;
--cnt;
++cp;
}
for (; cnt==0 && i<4; ++i, ++cp) {
data = (data << 8) | (*(uchar *)cp);
}
if ((rc = write_word(info, wp, data)) != 0) {
return (rc);
}
wp += 4;
}
/*
* handle word aligned part
*/
while (cnt >= 4) {
data = 0;
for (i=0; i<4; ++i) {
data = (data << 8) | *src++;
}
if ((rc = write_word(info, wp, data)) != 0) {
return (rc);
}
wp += 4;
cnt -= 4;
}
if (cnt == 0) {
return (0);
}
/*
* handle unaligned tail bytes
*/
data = 0;
for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
data = (data << 8) | *src++;
--cnt;
}
for (; i<4; ++i, ++cp) {
data = (data << 8) | (*(uchar *)cp);
}
return (write_word(info, wp, data));
}
/*-----------------------------------------------------------------------
* Write a word to Flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
static int write_word (flash_info_t *info, ulong dest, ulong data)
{
volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)(info->start[0]);
volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *)dest;
volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
ulong start;
int flag;
int i;
/* Check if Flash is (sufficiently) erased */
if ((*((volatile ulong *)dest) & data) != data) {
printf("dest = %08lx, *dest = %08lx, data = %08lx\n",
dest, *(volatile ulong *)dest, data);
return 2;
}
for (i=0; i < 4/sizeof(FLASH_WORD_SIZE); i++) {
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
addr2[ADDR0] = (FLASH_WORD_SIZE)0x00A000A0;
dest2[i] = data2[i];
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
while ((dest2[i] & 0x00800080) != (data2[i] & 0x00800080)) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
addr2[0] = (FLASH_WORD_SIZE)0x00F000F0;
return (1);
}
}
}
addr2[0] = (FLASH_WORD_SIZE)0x00F000F0;
return (0);
}
/*-----------------------------------------------------------------------
*/

1011
board/exbitgen/init.S
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