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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [devs/] [flash/] [intel/] [bootblock/] [v2_0/] [src/] [bootblock_flash.c] - Rev 27
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//========================================================================== // // bootblock_flash.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 // Contributors: gthomas, jskov // Date: 2000-07-26 // Purpose: // Description: // //####DESCRIPTIONEND#### // //========================================================================== #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 "flash.h" #define _si(p) ((p[0]<<8)|p[1]) #define DEBUG 0 int flash_hwr_init(void) { unsigned short data[4]; 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; // 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); HAL_DCACHE_SYNC(); // Should guarantee this code will run HAL_ICACHE_INVALIDATE_ALL(); // is also required to avoid old contents stat = (*_flash_query)(data); #if DEBUG (*flash_info.pf)("stat = %x\n", stat); dump_buf(data, sizeof(data)); #endif if (data[0] != FLASH_Intel_code) { (*flash_info.pf)("Not Intel = %x\n", data[0]); return FLASH_ERR_HWR; } // FIXME: More devices, comments, etc if (data[1] == (unsigned short)0x8897) { num_regions = 64*2; region_size = 0x20000; } else if (data[1] == (unsigned short)0x88f4) { num_regions = 32; // (only use one for now)*4; // 4 devices in serial, each having 32 regions region_size = 0x10000; } else { (*flash_info.pf)("Unknown device type: %x\n", data[1]); return FLASH_ERR_HWR; } // Hard wired for now FIXME flash_info.block_size = region_size; flash_info.blocks = num_regions; #if 0 // This should be used only for the gross XX firmware build flash_info.start = (void *)0; flash_info.end = (void *)(0x10000000+(num_regions*region_size)); #else flash_info.start = (void *)0x50000000; flash_info.end = (void *)(0x50000000+(num_regions*region_size)); #endif return FLASH_ERR_OK; } // Map a hardware status to a package error int flash_hwr_map_error(int err) { if (err & 0x007E007E) { (*flash_info.pf)("Err = %x\n", err); if (err & 0x00400040) { return FLASH_ERR_ERASE_SUSPEND; } else if (err & 0x00040004) { return FLASH_ERR_PROGRAM_SUSPEND; } else if (err & 0x00020002) { return FLASH_ERR_PROTECT; } else if (err & 0x00100010) { return FLASH_ERR_PROGRAM; } else if (err & 0x00200020) { 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))); }
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