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Diffstat (limited to 'ecos/packages/devs/flash/mips/atlas/current/src/atlas_flash.c')
| -rw-r--r-- | ecos/packages/devs/flash/mips/atlas/current/src/atlas_flash.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/ecos/packages/devs/flash/mips/atlas/current/src/atlas_flash.c b/ecos/packages/devs/flash/mips/atlas/current/src/atlas_flash.c new file mode 100644 index 0000000..6892954 --- /dev/null +++ b/ecos/packages/devs/flash/mips/atlas/current/src/atlas_flash.c @@ -0,0 +1,131 @@ +//========================================================================== +// +// atlas_flash.c +// +// Flash programming +// +//========================================================================== +// ####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, 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., +// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 v2. +// +// This exception does not invalidate any other reasons why a work based +// on this file might be covered by the GNU General Public License. +// ------------------------------------------- +// ####ECOSGPLCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): gthomas +// Contributors: gthomas, msalter +// Date: 2000-12-06 +// Purpose: +// Description: +// +//####DESCRIPTIONEND#### +// +//========================================================================== + +#include <pkgconf/hal.h> +#include <cyg/hal/hal_arch.h> +#include <cyg/infra/diag.h> + +#include <cyg/io/flash.h> +#include <cyg/io/flash_dev.h> + +#include "flash.h" + +#include <string.h> + +#define _si(p) ((p[1]<<8)|p[0]) + +int +flash_hwr_init(void) +{ + struct FLASH_query data, *qp; + int num_regions, region_size; + + flash_dev_query(&data); + + qp = &data; + if (/*(qp->manuf_code == FLASH_Intel_code) && */ + (strncmp(qp->id, "QRY", 3) == 0)) { + num_regions = _si(qp->num_regions)+1; + region_size = _si(qp->region_size)*256; + + flash_info.block_size = region_size*2; // Pairs of chips in parallel + flash_info.blocks = num_regions*2; // and pairs of chips in serial + flash_info.start = (void *)0x9c000000; + flash_info.end = (void *)0x9e000000; + return FLASH_ERR_OK; + } else { + (*flash_info.pf)("Can't identify FLASH, sorry\n"); + diag_dump_buf((void*)&data, sizeof(data)); + return FLASH_ERR_HWR; + } +} + +// 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 & 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[]; + unsigned long p_stext, pstart, p_etext, pend; + + p_stext = CYGARC_PHYSICAL_ADDRESS((unsigned long)&_stext); + p_etext = CYGARC_PHYSICAL_ADDRESS((unsigned long)&_etext); + + // if _stext/_etext in boot shadow region, convert to + // system flash address + if ((p_stext >= 0x1fc00000) && (p_etext <= 0x20000000)) { + p_stext -= 0x02000000; + p_etext -= 0x02000000; + } + + pstart = CYGARC_PHYSICAL_ADDRESS((unsigned long)start); + pend = CYGARC_PHYSICAL_ADDRESS((unsigned long)end); + + return (((p_stext >= pstart) && (p_stext < pend)) || + ((p_etext >= pstart) && (p_etext < pend))); +} |