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  • This comparison shows the changes necessary to convert path 
    /openrisc/trunk/rtos/ecos-2.0/packages/devs/flash/intel/strata
    from Rev 27 to Rev 174
    ↔ Reverse comparison
  •

Rev 27 → Rev 174

/v2_0/cdl/flash_strata.cdl
0,0 → 1,146
# ====================================================================
#
# flash_strata.cdl
#
# FLASH memory - Hardware support for Intel Strata Flash
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
##
## eCos 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 or (at your option) any later version.
##
## eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
##
## As a special exception, if other files instantiate templates or use macros
## or inline functions from this file, or you compile this file and link it
## with other works to produce a work based on this file, this file does not
## by itself cause the resulting work to be covered by the GNU General Public
## License. However the source code for this file must still be made available
## in accordance with section (3) of the GNU General Public License.
##
## This exception does not invalidate any other reasons why a work based on
## this file might be covered by the GNU General Public License.
##
## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
## at http://sources.redhat.com/ecos/ecos-license/
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s): gthomas
# Original data: gthomas
# Contributors:
# Date: 2000-07-26
#
#####DESCRIPTIONEND####
#
# ====================================================================
 
cdl_package CYGPKG_DEVS_FLASH_STRATA {
display "Intel StrataFLASH memory support"
 
parent CYGPKG_IO_FLASH
active_if CYGPKG_IO_FLASH
 
implements CYGHWR_IO_FLASH_DEVICE
 
# implements CYGHWR_IO_FLASH_DEVICE_NOT_IN_RAM
cdl_option CYGOPT_DEVS_FLASH_STRATA_NOT_IN_RAM {
display "Control Flash driver code copy to RAM"
flavor bool
no_define
default_value 1
implements CYGHWR_IO_FLASH_DEVICE_NOT_IN_RAM
description "
Rarely, it is useful to disable the request that flash driver code
be copied to separate RAM for execution. This option lets you do that.
It should only be controlled by redboot_XXX.ecm config files, for
building different varieties of RedBoot.
NEVER disable this option for ROM startup code, which executes in place
from Flash: the build will not work."
}
 
active_if CYGINT_DEVS_FLASH_STRATA_REQUIRED
 
include_dir .
include_files ; # none _exported_ whatsoever
description "FLASH memory device support for Intel StrataFlash"
compile strata.c
 
define_proc {
puts $::cdl_header "#include <pkgconf/system.h>";
puts $::cdl_header "#include CYGDAT_DEVS_FLASH_STRATA_CFG";
}
 
make -priority 1 {
flash_erase_block.o: $(REPOSITORY)/$(PACKAGE)/src/flash_erase_block.c \
$(REPOSITORY)/$(PACKAGE)/src/strata.h
$(CC) -S $(INCLUDE_PATH) $(CFLAGS) -g0 -fno-function-sections $(REPOSITORY)/$(PACKAGE)/src/flash_erase_block.c
echo " .text" >>flash_erase_block.s
echo " .globl flash_erase_block_end" >>flash_erase_block.s
echo "flash_erase_block_end:" >>flash_erase_block.s
$(CC) $(CFLAGS) -c -o flash_erase_block.o flash_erase_block.s
$(AR) rcs $(PREFIX)/lib/libtarget.a flash_erase_block.o
}
make -priority 1 {
flash_program_buf.o: $(REPOSITORY)/$(PACKAGE)/src/flash_program_buf.c \
$(REPOSITORY)/$(PACKAGE)/src/strata.h
$(CC) -S $(INCLUDE_PATH) $(CFLAGS) -g0 -fno-function-sections $(REPOSITORY)/$(PACKAGE)/src/flash_program_buf.c
echo " .text" >>flash_program_buf.s
echo " .globl flash_program_buf_end" >>flash_program_buf.s
echo "flash_program_buf_end:" >>flash_program_buf.s
$(CC) $(CFLAGS) -c -o flash_program_buf.o flash_program_buf.s
$(AR) rcs $(PREFIX)/lib/libtarget.a flash_program_buf.o
}
make -priority 1 {
flash_query.o: $(REPOSITORY)/$(PACKAGE)/src/flash_query.c \
$(REPOSITORY)/$(PACKAGE)/src/strata.h
$(CC) -S $(INCLUDE_PATH) $(CFLAGS) -g0 -fno-function-sections $(REPOSITORY)/$(PACKAGE)/src/flash_query.c
echo " .text" >>flash_query.s
echo " .globl flash_query_end" >>flash_query.s
echo "flash_query_end:" >>flash_query.s
$(CC) $(CFLAGS) -c -o flash_query.o flash_query.s
$(AR) rcs $(PREFIX)/lib/libtarget.a flash_query.o
}
 
cdl_component CYGPKG_DEVS_FLASH_STRATA_LOCKING {
display "Flash device implements locking"
active_if 0 < CYGHWR_IO_FLASH_BLOCK_LOCKING
calculated 1
 
make -priority 1 {
flash_lock_block.o: $(REPOSITORY)/$(PACKAGE)/src/flash_lock_block.c \
$(REPOSITORY)/$(PACKAGE)/src/strata.h
$(CC) -S $(INCLUDE_PATH) $(CFLAGS) -g0 -fno-function-sections $(REPOSITORY)/$(PACKAGE)/src/flash_lock_block.c
echo " .text" >>flash_lock_block.s
echo " .globl flash_lock_block_end" >>flash_lock_block.s
echo "flash_lock_block_end:" >>flash_lock_block.s
$(CC) $(CFLAGS) -c -o flash_lock_block.o flash_lock_block.s
$(AR) rcs $(PREFIX)/lib/libtarget.a flash_lock_block.o
}
make -priority 1 {
flash_unlock_block.o: $(REPOSITORY)/$(PACKAGE)/src/flash_unlock_block.c \
$(REPOSITORY)/$(PACKAGE)/src/strata.h
$(CC) -S $(INCLUDE_PATH) $(CFLAGS) -g0 -fno-function-sections $(REPOSITORY)/$(PACKAGE)/src/flash_unlock_block.c
echo " .text" >>flash_unlock_block.s
echo " .globl flash_unlock_block_end" >>flash_unlock_block.s
echo "flash_unlock_block_end:" >>flash_unlock_block.s
$(CC) $(CFLAGS) -c -o flash_unlock_block.o flash_unlock_block.s
$(AR) rcs $(PREFIX)/lib/libtarget.a flash_unlock_block.o
}
}
}
 
/v2_0/src/strata.c
0,0 → 1,209
//==========================================================================
//
// strata.c
//
// Flash programming
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas, hmt
// Contributors: gthomas
// Date: 2001-02-14
// Purpose:
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <pkgconf/system.h>
#include <pkgconf/hal.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/hal_cache.h>
 
#define _FLASH_PRIVATE_
#include <cyg/io/flash.h>
 
#include "strata.h"
 
#define _si(p) ((p[1]<<8)|p[0])
 
extern void diag_dump_buf(void *buf, CYG_ADDRWORD len);
 
extern int strncmp(const char *s1, const char *s2, size_t len);
extern void *memcpy( void *, const void *, size_t );
 
int
flash_hwr_init(void)
{
struct FLASH_query data, *qp;
extern char flash_query[], flash_query_end[];
typedef int code_fun(unsigned char *);
code_fun *_flash_query;
int code_len, stat, num_regions, region_size, buffer_size;
int icache_on, dcache_on;
 
HAL_DCACHE_IS_ENABLED(dcache_on);
HAL_ICACHE_IS_ENABLED(icache_on);
 
// Copy 'program' code to RAM for execution
code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
_flash_query = (code_fun *)flash_info.work_space;
memcpy(_flash_query, &flash_query, code_len);
if (dcache_on) {
HAL_DCACHE_SYNC(); // Should guarantee this code will run
}
if (icache_on) {
HAL_ICACHE_DISABLE(); // is also required to avoid old contents
}
 
stat = (*_flash_query)((unsigned char *)&data);
if (icache_on) {
HAL_ICACHE_ENABLE();
}
 
qp = &data;
if ( (qp->manuf_code == FLASH_Intel_code)
#ifdef CYGOPT_FLASH_IS_BOOTBLOCK
// device types go as follows: 0x90 for 16-bits, 0xD0 for 8-bits,
// plus 0 or 1 for -T (Top Boot) or -B (Bottom Boot)
// [FIXME: whatever that means :FIXME]
// [I think it means the boot blocks are top/bottom of addr space]
// plus the following size codes:
// 0: 16Mbit 2: 8Mbit 4: 4Mbit
// 6: 32Mbit 8: 64Mbit
#if 16 == CYGNUM_FLASH_WIDTH
&& (0x90 == (0xF0 & qp->device_code)) // 16-bit devices
#elif 8 == CYGNUM_FLASH_WIDTH
&& (0xD0 == (0xF0 & qp->device_code)) // 8-bit devices
#else
&& 0
#error Only understand 16 and 8-bit bootblock flash types
#endif
) {
int lookup[] = { 16, 8, 4, 32, 64 };
#define BLOCKSIZE (0x10000)
region_size = BLOCKSIZE;
num_regions = qp->device_code & 0x0F;
num_regions >>= 1;
if ( num_regions > 4 )
goto flash_type_unknown;
num_regions = lookup[num_regions];
num_regions *= 1024 * 1024; // to bits
num_regions /= 8; // to bytes
num_regions /= BLOCKSIZE; // to blocks
buffer_size = 0;
#else // CYGOPT_FLASH_IS_BOOTBLOCK
&& (strncmp(qp->id, "QRY", 3) == 0)) {
num_regions = _si(qp->num_regions)+1;
region_size = _si(qp->region_size)*256;
if (_si(qp->buffer_size)) {
buffer_size = CYGNUM_FLASH_DEVICES << _si(qp->buffer_size);
} else {
buffer_size = 0;
}
#endif // Not CYGOPT_FLASH_IS_BOOTBLOCK
 
flash_info.block_size = region_size*CYGNUM_FLASH_DEVICES;
flash_info.buffer_size = buffer_size;
flash_info.blocks = num_regions;
flash_info.start = (void *)CYGNUM_FLASH_BASE;
flash_info.end = (void *)(CYGNUM_FLASH_BASE +
(num_regions*region_size*CYGNUM_FLASH_DEVICES));
#ifdef CYGNUM_FLASH_BASE_MASK
// Then this gives us a maximum size for the (visible) device.
// This is to cope with oversize devices fitted, with some high
// address lines ignored.
if ( ((unsigned int)flash_info.start & CYGNUM_FLASH_BASE_MASK) !=
(((unsigned int)flash_info.end - 1) & CYGNUM_FLASH_BASE_MASK ) ) {
// then the size of the device appears to span >1 device-worth!
unsigned int x;
x = (~(CYGNUM_FLASH_BASE_MASK)) + 1; // expected device size
x += (unsigned int)flash_info.start;
if ( x < (unsigned int)flash_info.end ) { // 2nd sanity check
(*flash_info.pf)("\nFLASH: Oversized device! End addr %p changed to %p\n",
flash_info.end, (void *)x );
flash_info.end = (void *)x;
// Also adjust the block count else unlock crashes!
x = ((cyg_uint8 *)flash_info.end - (cyg_uint8 *)flash_info.start)
/ flash_info.block_size;
flash_info.blocks = x;
}
}
#endif // CYGNUM_FLASH_BASE_MASK
 
return FLASH_ERR_OK;
}
#ifdef CYGOPT_FLASH_IS_BOOTBLOCK
flash_type_unknown:
#endif
(*flash_info.pf)("Can't identify FLASH, sorry, man %x, dev %x, id [%4s] stat %x\n",
qp->manuf_code, qp->device_code, qp->id, stat );
diag_dump_buf(qp, sizeof(data));
return FLASH_ERR_HWR;
}
 
// Map a hardware status to a package error
int
flash_hwr_map_error(int err)
{
if (err & FLASH_ErrorMask) {
(*flash_info.pf)("Err = %x\n", err);
if (err & FLASH_ErrorProgram)
return FLASH_ERR_PROGRAM;
else if (err & FLASH_ErrorErase)
return FLASH_ERR_ERASE;
else
return FLASH_ERR_HWR; // FIXME
} else {
return FLASH_ERR_OK;
}
}
 
// See if a range of FLASH addresses overlaps currently running code
bool
flash_code_overlaps(void *start, void *end)
{
extern char _stext[], _etext[];
 
return ((((unsigned long)&_stext >= (unsigned long)start) &&
((unsigned long)&_stext < (unsigned long)end)) ||
(((unsigned long)&_etext >= (unsigned long)start) &&
((unsigned long)&_etext < (unsigned long)end)));
}
 
// EOF strata.c
/v2_0/src/flash_lock_block.c
0,0 → 1,98
//==========================================================================
//
// flash_lock_block.c
//
// Flash programming
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas, hmt
// Contributors: gthomas
// Date: 2001-02-14
// Purpose:
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include "strata.h"
 
#include <cyg/hal/hal_cache.h>
 
//
// CAUTION! This code must be copied to RAM before execution. Therefore,
// it must not contain any code which might be position dependent!
//
 
int
flash_lock_block(volatile flash_t *block)
{
volatile flash_t *ROM;
flash_t stat;
int timeout = 5000000;
int cache_on;
 
// Get base address and map addresses to virtual addresses
ROM = FLASH_P2V(CYGNUM_FLASH_BASE_MASK & (unsigned int)block);
block = FLASH_P2V(block);
 
HAL_DCACHE_IS_ENABLED(cache_on);
if (cache_on) {
HAL_DCACHE_SYNC();
HAL_DCACHE_DISABLE();
}
 
// Clear any error conditions
ROM[0] = FLASH_Clear_Status;
 
// Set lock bit
block[0] = FLASH_Set_Lock;
block[0] = FLASH_Set_Lock_Confirm; // Confirmation
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) break;
}
 
// Restore ROM to "normal" mode
ROM[0] = FLASH_Reset;
 
if (cache_on) {
HAL_DCACHE_ENABLE();
}
 
return stat;
}
/v2_0/src/flash_program_buf.c
0,0 → 1,172
//==========================================================================
//
// flash_program_buf.c
//
// Flash programming
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas, hmt
// Contributors: gthomas
// Date: 2001-02-14
// Purpose:
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include "strata.h"
 
#include <pkgconf/hal.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/hal_cache.h>
 
//
// CAUTION! This code must be copied to RAM before execution. Therefore,
// it must not contain any code which might be position dependent!
//
 
int
flash_program_buf(volatile flash_t *addr, flash_t *data, int len,
unsigned long block_mask, int buffer_size)
{
volatile flash_t *ROM;
volatile flash_t *BA;
flash_t stat = 0;
int timeout = 50000;
int cache_on;
#ifdef FLASH_Write_Buffer
int i, wc;
#endif
 
HAL_DCACHE_IS_ENABLED(cache_on);
if (cache_on) {
HAL_DCACHE_SYNC();
HAL_DCACHE_DISABLE();
}
 
// Get base address and map addresses to virtual addresses
ROM = FLASH_P2V( CYGNUM_FLASH_BASE_MASK & (unsigned int)addr );
BA = FLASH_P2V( block_mask & (unsigned int)addr );
addr = FLASH_P2V(addr);
 
// Clear any error conditions
ROM[0] = FLASH_Clear_Status;
 
#ifdef FLASH_Write_Buffer
// Write any big chunks first
while (len >= buffer_size) {
wc = buffer_size;
if (wc > len) wc = len;
len -= wc;
// convert 'wc' in bytes to 'wc' in 'flash_t'
wc = wc / sizeof(flash_t); // Word count
*BA = FLASH_Write_Buffer;
timeout = 5000000;
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) {
goto bad;
}
*BA = FLASH_Write_Buffer;
}
*BA = FLASHWORD(wc-1); // Count is 0..N-1
for (i = 0; i < wc; i++) {
#ifdef CYGHWR_FLASH_WRITE_ELEM
CYGHWR_FLASH_WRITE_ELEM(addr+i, data+i);
#else
*(addr+i) = *(data+i);
#endif
}
*BA = FLASH_Confirm;
ROM[0] = FLASH_Read_Status;
timeout = 5000000;
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) {
goto bad;
}
}
// Jump out if there was an error
if (stat & FLASH_ErrorMask) {
goto bad;
}
// And verify the data - also increments the pointers.
*BA = FLASH_Reset;
for (i = 0; i < wc; i++) {
if ( *addr++ != *data++ ) {
stat = FLASH_ErrorNotVerified;
goto bad;
}
}
}
#endif
 
while (len > 0) {
ROM[0] = FLASH_Program;
#ifdef CYGHWR_FLASH_WRITE_ELEM
CYGHWR_FLASH_WRITE_ELEM(addr, data);
#else
*addr = *data;
#endif
timeout = 5000000;
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) {
goto bad;
}
}
if (stat & FLASH_ErrorMask) {
break;
}
ROM[0] = FLASH_Reset;
if (*addr++ != *data++) {
stat = FLASH_ErrorNotVerified;
break;
}
len -= sizeof( flash_t );
}
 
// Restore ROM to "normal" mode
bad:
ROM[0] = FLASH_Reset;
 
if (cache_on) {
HAL_DCACHE_ENABLE();
}
 
return stat;
}
/v2_0/src/flash_unlock_block.c
0,0 → 1,156
//==========================================================================
//
// flash_unlock_block.c
//
// Flash programming
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas, hmt
// Contributors: gthomas
// Date: 2001-02-14
// Purpose:
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include "strata.h"
 
#include <cyg/hal/hal_cache.h>
 
//
// CAUTION! This code must be copied to RAM before execution. Therefore,
// it must not contain any code which might be position dependent!
//
 
//
// The difficulty with this operation is that the hardware does not support
// unlocking single blocks. However, the logical layer would like this to
// be the case, so this routine emulates it. The hardware can clear all of
// the locks in the device at once. This routine will use that approach and
// then reset the regions which are known to be locked.
//
 
#define MAX_FLASH_BLOCKS 128
 
int
flash_unlock_block(volatile flash_t *block, int block_size, int blocks)
{
volatile flash_t *ROM;
flash_t stat;
int timeout = 5000000;
int cache_on;
#ifndef CYGOPT_FLASH_IS_SYNCHRONOUS
int i;
volatile flash_t *bp, *bpv;
unsigned char is_locked[MAX_FLASH_BLOCKS];
#endif
 
HAL_DCACHE_IS_ENABLED(cache_on);
if (cache_on) {
HAL_DCACHE_SYNC();
HAL_DCACHE_DISABLE();
}
 
// Get base address and map addresses to virtual addresses
ROM = FLASH_P2V( CYGNUM_FLASH_BASE_MASK & (unsigned int)block );
block = FLASH_P2V(block);
 
// Clear any error conditions
ROM[0] = FLASH_Clear_Status;
 
#ifdef CYGOPT_FLASH_IS_SYNCHRONOUS
// Clear lock bit
block[0] = FLASH_Clear_Locks;
block[0] = FLASH_Clear_Locks_Confirm; // Confirmation
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) break;
}
#else
// Get current block lock state. This needs to access each block on
// the device so currently locked blocks can be re-locked.
bp = ROM;
for (i = 0; i < blocks; i++) {
bpv = FLASH_P2V( bp );
*bpv = FLASH_Read_Query;
if (bpv == block) {
is_locked[i] = 0;
} else {
#if 8 == CYGNUM_FLASH_WIDTH
is_locked[i] = bpv[4];
#else
is_locked[i] = bpv[2];
# endif
}
bp += block_size / sizeof(*bp);
}
 
// Clears all lock bits
ROM[0] = FLASH_Clear_Locks;
ROM[0] = FLASH_Clear_Locks_Confirm; // Confirmation
timeout = 5000000;
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) break;
}
 
// Restore the lock state
bp = ROM;
for (i = 0; i < blocks; i++) {
bpv = FLASH_P2V( bp );
if (is_locked[i]) {
*bpv = FLASH_Set_Lock;
*bpv = FLASH_Set_Lock_Confirm; // Confirmation
timeout = 5000000;
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) break;
}
}
bp += block_size / sizeof(*bp);
}
#endif // CYGOPT_FLASH_IS_SYNCHRONOUS
 
// Restore ROM to "normal" mode
ROM[0] = FLASH_Reset;
 
if (cache_on) {
HAL_DCACHE_ENABLE();
}
 
return stat;
}
/v2_0/src/flash_query.c
0,0 → 1,113
//==========================================================================
//
// flash_query.c
//
// Flash programming - query device
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas, hmt
// Contributors: gthomas
// Date: 2001-02-14
// Purpose:
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include "strata.h"
 
#include <pkgconf/hal.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/hal_cache.h>
#include CYGHWR_MEMORY_LAYOUT_H
 
//
// CAUTION! This code must be copied to RAM before execution. Therefore,
// it must not contain any code which might be position dependent!
//
 
#define CNT 20*1000*10 // Approx 20ms
 
int
flash_query(unsigned char *data)
{
volatile flash_t *ROM;
int i, cnt;
int cache_on;
 
HAL_DCACHE_IS_ENABLED(cache_on);
if (cache_on) {
HAL_DCACHE_SYNC();
HAL_DCACHE_DISABLE();
}
 
// Get base address and map addresses to virtual addresses
ROM = FLASH_P2V( CYGNUM_FLASH_BASE );
#ifdef CYGOPT_FLASH_IS_BOOTBLOCK
// BootBlock flash does not support full Read_Query - we have do a
// table oriented thing above, after getting just two bytes of results:
ROM[0] = FLASH_Read_ID;
i = 2;
#else
// StrataFlash supports the full Read_Query op:
ROM[0] = FLASH_Read_Query;
i = sizeof(struct FLASH_query);
#endif // Not CYGOPT_FLASH_IS_BOOTBLOCK
 
for (cnt = CNT; cnt > 0; cnt--) ;
for ( /* i */; i > 0; i-- ) {
// It is very deliberate that data is chars NOT flash_t:
// The info comes out in bytes regardless of device.
*data++ = (unsigned char) (*ROM++);
#ifndef CYGOPT_FLASH_IS_BOOTBLOCK
# if 8 == CYGNUM_FLASH_WIDTH
// strata flash with 'byte-enable' contains the configuration data
// at even addresses
++ROM;
# endif
#endif
}
ROM[0] = FLASH_Reset;
 
if (cache_on) {
HAL_DCACHE_ENABLE();
}
 
return 0;
}
/v2_0/src/strata.h
0,0 → 1,255
#ifndef CYGONCE_DEVS_FLASH_INTEL_STRATA_FLASH_H
#define CYGONCE_DEVS_FLASH_INTEL_STRATA_FLASH_H
//==========================================================================
//
// strata.h
//
// strataFlash programming - device constants, etc.
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas, hmt
// Contributors: gthomas
// Date: 2001-02-14
// Purpose:
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <pkgconf/system.h>
#include <pkgconf/devs_flash_strata.h>
#include CYGDAT_DEVS_FLASH_STRATA_INL
 
// ------------------------------------------------------------------------
//
// It is expected that the above include defined all the properties of the
// device we want to drive: the choices this module supports include:
//
// Buffered Read Block
// write query locking
// 28FxxxB3 - Bootblock - no no no
// 28FxxxC3 - StrataFlash - no yes yes
// 28FxxxJ3 - Advanced StrataFlash - yes yes yes
// 28FxxxK3 - Synchronous StrataFlash - yes yes yes
//
// These options are controlled by defining or not, in that include file,
// these symbols (not CDL options, just symbols - though they could be CDL
// in future)
// CYGOPT_FLASH_IS_BOOTBLOCK - for xxxB3 devices.
// CYGOPT_FLASH_IS_NOT_ADVANCED - for xxxC3 devices.
// CYGOPT_FLASH_IS_SYNCHRONOUS - for xxxK3 devices.
// none of the above - for xxxJ3 devices.
// (Advanced seems to be usual these days hence the sense of that opt)
//
// Other properties are controlled by these symbols:
// CYGNUM_FLASH_DEVICES number of devices across the databus
// CYGNUM_FLASH_WIDTH number of bits in each device
// CYGNUM_FLASH_BLANK 1 if blank is allones, 0 if 0
// CYGNUM_FLASH_BASE base address
// CYGNUM_FLASH_BASE_MASK a mask to get base address from any
//
// for example, a 32-bit memory could be made from 1x32bit, 2x16bit or
// 4x8bit devices; usually 16bit ones are chosen in practice, so we would
// have CYGNUM_FLASH_DEVICES = 2, and CYGNUM_FLASH_WIDTH = 16. Both
// devices would be handled simulataneously, via 32bit bus operations.
// Some CPUs can handle a single 16bit device as 32bit memory "by magic".
// In that case, CYGNUM_FLASH_DEVICES = 1 and CYGNUM_FLASH_WIDTH = 16, and
// the device is managed using only 16bit bus operations.
 
 
// ------------------------------------------------------------------------
//
// No mapping on this target - but these casts would be needed if some
// manipulation did occur. An example of this might be:
// // First 4K page of flash at physical address zero is
// // virtually mapped at address 0xa0000000.
// #define FLASH_P2V(x) ((volatile flash_t *)(((unsigned)(x) < 0x1000) ?
// ((unsigned)(x) | 0xa0000000) :
// (unsigned)(x)))
 
#ifndef FLASH_P2V
#define FLASH_P2V( _a_ ) ((volatile flash_t *)((unsigned int)(_a_)))
#endif
 
// ------------------------------------------------------------------------
//
// This generic code is intended to deal with all shapes and orientations
// of Intel StrataFlash. Trademarks &c belong to their respective owners.
//
// It therefore needs some trickery to define the constants and accessor
// types that we use to interact with the device or devices.
//
// The assumptions are that
// o Parallel devices, we write to, with the "opcode" replicated per
// device
// o The "opcode" and status returns exist only in the low byte of the
// device's interface regardless of its width.
// o Hence opcodes and status are only one byte.
// An exception is the test for succesfully erased data.
//
// ------------------------------------------------------------------------
 
#if 8 == CYGNUM_FLASH_WIDTH
 
# if 1 == CYGNUM_FLASH_DEVICES
# define FLASHWORD( k ) ((flash_t)(k)) // To narrow a 16-bit constant
typedef unsigned char flash_t;
# elif 2 == CYGNUM_FLASH_DEVICES
// 2 devices to make 16-bit
# define FLASHWORD( k ) ((k)+((k)<<8))
typedef unsigned short flash_t;
# elif 4 == CYGNUM_FLASH_DEVICES
// 4 devices to make 32-bit
# define FLASHWORD( k ) ((k)+((k)<<8)+((k)<<16)+((k)<<24))
typedef unsigned long flash_t;
# elif 8 == CYGNUM_FLASH_DEVICES
// 8 devices to make 64-bit - intermediate requires explicit widening
# define FLASHWORD32( k ) ((flash_t)((k)+((k)<<8)+((k)<<16)+((k)<<24)))
# define FLASHWORD( k ) (FLASHWORD32( k ) + (FLASHWORD32( k ) << 32));
typedef unsigned long long flash_t;
# else
# error How many 8-bit flash devices?
# endif
 
#elif 16 == CYGNUM_FLASH_WIDTH
 
# if 1 == CYGNUM_FLASH_DEVICES
# define FLASHWORD( k ) (k)
typedef unsigned short flash_t;
# elif 2 == CYGNUM_FLASH_DEVICES
// 2 devices to make 32-bit
# define FLASHWORD( k ) ((k)+((k)<<16))
typedef unsigned long flash_t;
# elif 2 == CYGNUM_FLASH_DEVICES
// 4 devices to make 64-bit - intermediate requires explicit widening
# define FLASHWORD32( k ) ((flash_t)((k)+((k)<<16)))
# define FLASHWORD( k ) (FLASHWORD32( k ) + (FLASHWORD32( k ) << 32));
typedef unsigned long long flash_t;
# else
# error How many 16-bit flash devices?
# endif
 
#elif 32 == CYGNUM_FLASH_WIDTH
 
# if 1 == CYGNUM_FLASH_DEVICES
# define FLASHWORD( k ) (k)
typedef unsigned long flash_t;
# elif 2 == CYGNUM_FLASH_DEVICES
// 2 devices to make 64-bit - intermediate requires explicit widening
# define FLASHWORD32( k ) ((flash_t)(k))
# define FLASHWORD( k ) (FLASHWORD32( k ) + (FLASHWORD32( k ) << 32));
typedef unsigned long long flash_t;
# else
# error How many 32-bit flash devices?
# endif
 
#else
# error What flash width?
#endif
 
// Data (not) that we read back:
#if 0 == CYGNUM_FLASH_BLANK
# define FLASH_BlankValue ((flash_t)0)
#elif 1 == CYGNUM_FLASH_BLANK
# define FLASH_BlankValue ((flash_t)(-1ll))
#else
# error What blank value?
#endif
 
// ------------------------------------------------------------------------
 
#define FLASH_Read_ID FLASHWORD( 0x90 )
#ifndef CYGOPT_FLASH_IS_BOOTBLOCK
#define FLASH_Read_Query FLASHWORD( 0x98 ) // Strata only
#endif
#define FLASH_Read_Status FLASHWORD( 0x70 )
#define FLASH_Clear_Status FLASHWORD( 0x50 )
#define FLASH_Status_Ready FLASHWORD( 0x80 )
#ifdef CYGOPT_FLASH_IS_BOOTBLOCK
#define FLASH_Program FLASHWORD( 0x40 ) // BootBlock only
#else
#define FLASH_Program FLASHWORD( 0x10 )
#endif
#define FLASH_Block_Erase FLASHWORD( 0x20 )
#ifndef CYGOPT_FLASH_IS_BOOTBLOCK
#ifndef CYGOPT_FLASH_IS_NOT_ADVANCED
#define FLASH_Write_Buffer FLASHWORD( 0xE8 ) // *Advanced* Strata only
#endif // flash is advanced ie. has Write Buffer command
#define FLASH_Set_Lock FLASHWORD( 0x60 ) // Strata only
#define FLASH_Set_Lock_Confirm FLASHWORD( 0x01 ) // Strata only
#define FLASH_Clear_Locks FLASHWORD( 0x60 ) // Strata only
#define FLASH_Clear_Locks_Confirm FLASHWORD( 0xD0 ) // Strata only
#endif
#define FLASH_Confirm FLASHWORD( 0xD0 )
//#define FLASH_Configure FLASHWORD( 0xB8 )
//#define FLASH_Configure_ReadyWait FLASHWORD( 0x00 )
//#define FLASH_Configure_PulseOnErase FLASHWORD( 0x01 )
//#define FLASH_Configure_PulseOnProgram FLASHWORD( 0x02 )
//#define FLASH_Configure_PulseOnBoth FLASHWORD( 0x03 )
#define FLASH_Reset FLASHWORD( 0xFF )
// Status that we read back:
#define FLASH_ErrorMask FLASHWORD( 0x7E )
#define FLASH_ErrorProgram FLASHWORD( 0x10 )
#define FLASH_ErrorErase FLASHWORD( 0x20 )
 
#define FLASH_ErrorNotVerified FLASHWORD( 0x9910 ) // made-up number
 
// ------------------------------------------------------------------------
 
#define FLASH_Intel_code 0x89 // NOT mapped to 16+16
 
// Extended query information
struct FLASH_query {
unsigned char manuf_code; // FLASH_Intel_code
unsigned char device_code;
unsigned char _unused0[14];
unsigned char id[3]; // Q R Y
unsigned char _unused1[20];
unsigned char device_size;
unsigned char device_interface[2];
unsigned char buffer_size[2];
unsigned char is_block_oriented;
unsigned char num_regions[2];
unsigned char region_size[2];
};
 
#endif // CYGONCE_DEVS_FLASH_INTEL_STRATA_FLASH_H
// ------------------------------------------------------------------------
// EOF strata.h
/v2_0/src/flash_erase_block.c
0,0 → 1,130
//==========================================================================
//
// flash_erase_block.c
//
// Flash programming
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas, hmt
// Contributors: gthomas
// Date: 2001-02-14
// Purpose:
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include "strata.h"
 
#include <pkgconf/hal.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/hal_cache.h>
 
//
// CAUTION! This code must be copied to RAM before execution. Therefore,
// it must not contain any code which might be position dependent!
//
 
int flash_erase_block(volatile flash_t *block, unsigned int block_size)
{
volatile flash_t *ROM;
flash_t stat = 0;
int timeout = 50000;
int cache_on;
int len, block_len, erase_block_size;
volatile flash_t *eb;
 
HAL_DCACHE_IS_ENABLED(cache_on);
if (cache_on) {
HAL_DCACHE_SYNC();
HAL_DCACHE_DISABLE();
}
 
// Get base address and map addresses to virtual addresses
ROM = FLASH_P2V(CYGNUM_FLASH_BASE_MASK & (unsigned int)block);
eb = block = FLASH_P2V(block);
block_len = block_size;
 
#ifdef CYGOPT_FLASH_IS_BOOTBLOCK
#define BLOCKSIZE (0x10000*CYGNUM_FLASH_DEVICES)
#define ERASE_BLOCKSIZE (0x2000*CYGNUM_FLASH_DEVICES)
if ((eb - ROM) < BLOCKSIZE) {
// FIXME - Handle 'boot' blocks
erase_block_size = ERASE_BLOCKSIZE;
} else {
erase_block_size = block_size;
}
#else
erase_block_size = block_size;
#endif
 
// Clear any error conditions
ROM[0] = FLASH_Clear_Status;
 
// Erase block
while (block_len > 0) {
ROM[0] = FLASH_Block_Erase;
*eb = FLASH_Confirm;
timeout = 5000000;
while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
if (--timeout == 0) break;
}
block_len -= erase_block_size;
eb = FLASH_P2V((unsigned int)eb + erase_block_size);
}
 
// Restore ROM to "normal" mode
ROM[0] = FLASH_Reset;
 
// If an error was reported, see if the block erased anyway
if (stat & FLASH_ErrorMask ) {
len = block_size;
while (len > 0) {
if (*block++ != FLASH_BlankValue ) break;
len -= sizeof(*block);
}
if (len == 0) stat = 0;
}
 
if (cache_on) {
HAL_DCACHE_ENABLE();
}
 
return stat;
}
/v2_0/ChangeLog
0,0 → 1,249
2002-08-12 Mark Salter <msalter@redhat.com>
 
* src/flash_unlock_block.c: Add synchronous strataflash support.
* src/strata.h: Add comments regarding synchronous strataflash.
 
2002-04-30 Christoph Csebits <christoph.csebits@frequentis.com>
 
* src/flash_unlock_block.c: Getting the current block lock
state for flashes in 8-Bit mode is now working correctly.
 
2002-04-16 Jonathan Larmour <jlarmour@redhat.com>
 
* cdl/flash_strata.cdl: Invoke $(CC) with $(CFLAGS) to ensure the
correct flags are passed.
 
2002-04-12 Gary Thomas <gthomas@redhat.com>
 
* src/strata.c: Clean up warnings.
 
2002-01-22 Mark Salter <msalter@redhat.com>
 
* cdl/flash_strata.cdl: Add ".text" before "_end" markers in .s files.
 
2001-10-23 Hugo Tyson <hmt@redhat.com>
 
* cdl/flash_strata.cdl: Provide an option so that RedBoot .ecm
files can turn off the functionality of copying flash driver code
to separate RAM for execution; it's not needed for RAM and ROMRAM
startup, and for some platforms it is required to *not* copy thus.
 
2001-08-25 Gary Thomas <gthomas@redhat.com>
 
* src/flash_program_buf.c (flash_program_buf): Allow configuration
specific code sequence for actual writing of data. Define by the
macro CYGHWR_FLASH_WRITE_ELEM. Note: this is required on some
hardware, like the Intel SA185, which handles flash writes in
strange/obscure fashion.
 
2001-07-17 Jeroen Dobbelaere <jeroen.dobbelaere@acunia.com>
 
* src/flash_query.c (flash_query): Query needs to be done on even
addresses for byte-enabled strata flash
 
* src/flash_program_buf.c (flash_program_buf): Fix of conversion of
write buffer length (in bytes) to the length in 'flash_t' words.
 
2001-06-22 Hugo Tyson <hmt@redhat.com>
 
* src/strata.c (flash_hwr_init): Need to refer to the query code
as extern char flash_query[], flash_query_end[]; (with the []) or
MIPS code gen assumes these are short offsets and linking fails.
The generic flash code in io/flash already uses this idiom.
 
2001-06-22 Hugo Tyson <hmt@redhat.com>
 
* src/strata.c (flash_hwr_init): Warnings reduced. No arithmetic
on void *.
 
2001-06-21 Hugo Tyson <hmt@redhat.com>
 
* src/flash_program_buf.c (flash_program_buf): The buffered write
code didn't jump out if there was a write error, nor verify the
data by reading back. This isn't consistent with the slow case,
and made it take an age if the device is unhappy, and then report
a bizarre error code. Both issues fixed.
 
2001-06-21 Hugo Tyson <hmt@redhat.com>
 
* src/strata.c (flash_hwr_init): If shrinking to fit, must also
adjust the flash_info.blocks field, else unlock crashes trying to
get status of all those extra blocks that we cannot actually see.
 
2001-06-11 Gary Thomas <gthomas@redhat.com>
 
* src/strata.c: Remove dependency on printf() via user functions.
 
2001-06-07 Hugo Tyson <hmt@redhat.com>
 
* src/strata.c (flash_hwr_init): If we find a flash device that is
larger than is possible given the memory map, shrink to fit.
We know about the memory map from CYGNUM_FLASH_BASE_MASK (if
defined); it tells us the stride from one device to another.
 
This is to cope with installing, say, a 28F640 in a slot designed
for a 28F320 because of supply issues - it all works fine so long
as A22 is grounded.
 
2001-05-23 Jesper Skov <jskov@redhat.com>
 
* cdl/flash_strata.cdl: Needs IO driver to copy functions to RAM.
 
2001-04-26 Gary Thomas <gthomas@redhat.com>
 
* src/strata.c: Be more careful when enable/flush/disable caches.
 
* src/flash_erase_block.c (flash_erase_block): Boot block devices
may require additional erase commands to erase entire 'block'.
 
2001-03-21 Hugo Tyson <hmt@redhat.com>
 
* src/strata.h (FLASH_Write_Buffer): Do not define this if
CYGOPT_FLASH_IS_NOT_ADVANCED is defined; Advanced (xxxJ3) flash is
usual these days. Also added documentation of the options that
can be used to control this module.
* src/flash_program_buf.c (flash_program_buf): Reduce warnings
about unused variables if no FLASH_Write_Buffer command available.
 
2001-03-21 Gary Thomas <gthomas@redhat.com>
 
* src/flash_program_buf.c (flash_program_buf): Buffered write code
fixups, only on platforms with it defined.
 
2001-03-17 Gary Thomas <gthomas@redhat.com>
 
* src/strata.h:
* src/strata.c: Support buffered writes.
 
* src/flash_program_buf.c: Use buffered writes if possible. This
mode allows the chip to do parallelized writes which is much faster.
It does require additional information, now provided by upper layer.
 
2001-02-15 Hugo Tyson <hmt@redhat.com>
 
* src/flash_query.c (flash_query): Depending on whether
CYGOPT_FLASH_IS_BOOTBLOCK (just a #define from the instantiator,
not really a cdl_option) is set, do the full Read_Query or just
acquire two codes for manufacturer and device type using Read_ID.
 
* src/strata.c (flash_hwr_init): Again depending on whether
CYGOPT_FLASH_IS_BOOTBLOCK, decode the device type into a size and
so on, or use the full Read_Query data as before.
 
* src/strata.h (FLASH_Read_ID): Undefine those commands which we
do not use. Conditionally define those that we use depending on
CYGOPT_FLASH_IS_BOOTBLOCK. Thus we should be able to deal with
StrataFlash and BootBlock flash with the same code.
 
* cdl/flash_strata.cdl: Do not implement (in the CDL sense)
CYGHWR_IO_FLASH_BLOCK_LOCKING leave it up to the instantiating
package instead. Also move the build of the two objects that do
locking and unlocking into a compenent which is only active if
CYGHWR_IO_FLASH_BLOCK_LOCKING is indeed (requested to be)
implemented somewhere.
 
2001-02-14 Hugo Tyson <hmt@redhat.com>
 
* devs/flash/intel/strata/...: New package, generic strataFlash
driver based on several others; a portion of its history
follows...
 
flash.h -> strata.h
flash<platform>.c -> strata.c
 
2001-02-06 Hugo Tyson <hmt@redhat.com>
 
* src/flash.h: Much more generic again. Not yet separated into
generic component and invocation header, but the structure is
there. Also included support for a mapping from the physical
flash address we're thinking of to the virtual address we use to
access it. More documentation. Generalization to 8,16,32 and
64-bit access, made up from 8,16 or 32-bit devices. Command and
status macros modified to accommodate these options.
 
* src/flash_lock_block.c (flash_lock_block):
* src/flash_erase_block.c (flash_erase_block):
* src/flash_query.c (flash_query):
* src/flash_program_buf.c (flash_program_buf):
All now acquire when possible the ROM address from the block
address, and use the physical to virtual macro as needed.
 
* src/flash_unlock_block.c (flash_unlock_block):
The same changes, but a little more complex because of the need to
clear-all then re-lock some semantics. Shadow pointer to virtual
address is used each time round the loop.
 
* cdl/flash_strata.cdl: Add explicit dependencies on flash.h, for
there were none - or they were ignored - for the specially built
compilation units that get copied to RAM for execution.
 
2001-02-01 Hugo Tyson <hmt@redhat.com>
 
* all: copied from the assabet flash driver.
 
2000-12-05 Jonathan Larmour <jlarmour@redhat.com>
 
* src/assabet_flash.c (flash_code_overlaps): Define stext/etext
as array types so no assumptions can be made by the compiler about
location.
 
2000-10-24 Gary Thomas <gthomas@redhat.com>
 
* src/flash_unlock_block.c (flash_unlock_block):
* src/flash_lock_block.c (flash_lock_block):
* src/flash_program_buf.c (flash_program_buf):
* src/flash_erase_block.c (flash_erase_block): Support up to 32M FLASH.
 
2000-09-10 Gary Thomas <gthomas@redhat.com>
 
* src/flash_unlock_block.c:
* src/flash_lock_block.c: New file(s).
 
* src/flash.h:
* cdl/flash_assabet.cdl: Add region locking functions.
 
2000-08-29 Gary Thomas <gthomas@redhat.com>
 
* src/assabet_flash.c: Improve error decoding.
 
2000-08-24 Gary Thomas <gthomas@redhat.com>
 
* src/flash_query.c:
* src/flash_erase_block.c:
* src/flash.h: FLASH support for Intel SA1110 Assabet.
 
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