1 //==========================================================================
5 // Flash programming for Toshiba NAND FLASH device on MOAB board
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
12 // Copyright (C) 2003 Nick Garnett <nickg@calivar.com>
13 // Copyright (C) 2003, 2004 Gary Thomas
15 // eCos is free software; you can redistribute it and/or modify it under
16 // the terms of the GNU General Public License as published by the Free
17 // Software Foundation; either version 2 or (at your option) any later version.
19 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
20 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
24 // You should have received a copy of the GNU General Public License along
25 // with eCos; if not, write to the Free Software Foundation, Inc.,
26 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
28 // As a special exception, if other files instantiate templates or use macros
29 // or inline functions from this file, or you compile this file and link it
30 // with other works to produce a work based on this file, this file does not
31 // by itself cause the resulting work to be covered by the GNU General Public
32 // License. However the source code for this file must still be made available
33 // in accordance with section (3) of the GNU General Public License.
35 // This exception does not invalidate any other reasons why a work based on
36 // this file might be covered by the GNU General Public License.
38 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
39 // at http://sources.redhat.com/ecos/ecos-license/
40 // -------------------------------------------
41 //####ECOSGPLCOPYRIGHTEND####
42 //==========================================================================
43 //#####DESCRIPTIONBEGIN####
45 // Author(s): Gary Thomas <gary@mlbassoc.com>
51 //####DESCRIPTIONEND####
53 //==========================================================================
55 #include <cyg/infra/cyg_type.h>
56 #define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
57 #include <cyg/hal/ppc_regs.h> // Platform registers
58 #include <cyg/hal/hal_io.h> // I/O macros
59 #include <cyg/hal/hal_if.h> // Virtual vector interfaces
61 // There's a single TC58256 or TC58DVG02 on the MOAB board.
63 #define CYGHWR_DEVS_FLASH_TOSHIBA_TC58256
64 #define CYGHWR_DEVS_FLASH_TOSHIBA_TC58DVG02
65 #define CYGNUM_FLASH_BLANK (1)
66 #define CYGNUM_FLASH_INTERLEAVE (1)
67 #define CYGNUM_FLASH_WIDTH (8)
68 #define CYGNUM_FLASH_SERIES (1)
69 #define CYGNUM_FLASH_BASE (_MOAB_NAND)
71 #define CYGHWR_FLASH_TC58XXX_CE moab_CE
72 #define CYGHWR_FLASH_TC58XXX_CLE moab_CLE
73 #define CYGHWR_FLASH_TC58XXX_ALE moab_ALE
74 #define CYGHWR_FLASH_TC58XXX_RDY moab_RDY
77 // Select the NAND device - this will be held until the
78 // entire command/data sequence has completed (which is
79 // necessary for read sequential)
81 static void __inline__
85 HAL_READ_UINT32(GPIO_OR, gpio_or);
93 HAL_WRITE_UINT32(GPIO_OR, gpio_or);
97 // Prepare to send a command byte to the NAND interface
99 static void __inline__
103 HAL_READ_UINT32(GPIO_OR, gpio_or);
106 gpio_or |= _MOAB_CLE;
109 gpio_or &= ~_MOAB_CLE;
111 HAL_WRITE_UINT32(GPIO_OR, gpio_or);
115 // Prepare to send address byte(s) to the NAND interface
117 static void __inline__
122 HAL_READ_UINT32(GPIO_OR, gpio_or);
125 gpio_or |= _MOAB_ALE;
128 gpio_or &= ~_MOAB_ALE;
130 HAL_WRITE_UINT32(GPIO_OR, gpio_or);
134 // Wait until the NAND device is ready (after a long operation)
136 static bool __inline__
141 HAL_READ_UINT32(GPIO_IR, gpio_ir);
142 return ((gpio_ir & _MOAB_RDY) != 0);
145 #include <cyg/io/flash_tc58xxx.inl>
148 // ------------------------------------------------------------------------
149 // EOF moab_nand_flash.c