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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [devs/] [flash/] [intel/] [strata/] [v2_0/] [src/] [strata.c] - Rev 27
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//========================================================================== // // 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
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