1 /*==========================================================================
5 // HAL misc board support code for Olimex SAM7-EX256 board
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 2006 Andrew Lunn <andrew.lunn@ascom.ch>
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
35 // -------------------------------------------
36 //####ECOSGPLCOPYRIGHTEND####
37 //==========================================================================
38 //#####DESCRIPTIONBEGIN####
40 // Author(s): Uwe Kindler
41 // Contributors: Andrew Lunn, John Eigelaar
43 // Purpose: HAL board support
44 // Description: Implementations of HAL board interfaces
46 //####DESCRIPTIONEND####
48 //========================================================================*/
50 #include <pkgconf/system.h>
51 #include <pkgconf/hal.h>
53 #include <cyg/hal/hal_io.h> // IO macros
56 // The development board does not contain any leds but a nokia 320 x 320
57 // pixel lcd. We use the backlight of the lcd as a simple 1-bit LED
59 void hal_at91_led (int val)
61 HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PB20, AT91_PIN_OUT);
62 HAL_ARM_AT91_GPIO_PUT(AT91_GPIO_PB20, (val & 1));
66 // Initialisation of Micrel KS8721 ethernet phy
68 void hal_plf_eth_init(void)
72 // Enable the PIOB Clock
73 HAL_WRITE_UINT32(AT91_PMC + AT91_PMC_PCER, AT91_PMC_PCER_PIOB);
75 // PU = Enables PCS_LPBK mode at power-up / reset.
76 HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PB15, AT91_PIN_IN);
77 HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PB15, AT91_PIN_PULLUP_DISABLE);
79 // PU = Enables ISOLATE mode at power-up /reset.
80 HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PB7, AT91_PIN_IN);
81 HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PB7, AT91_PIN_PULLUP_DISABLE);
83 // PU = Enables RMII mode at power-up / reset
84 // TODO: The errata reports that the RMII mode for the SAM7X does not work.
85 // It would probably still be a good idea to use the RMII/MII CDL
86 // configuration to select the appropriate mode here
87 HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PB16, AT91_PIN_IN);
88 HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PB16, AT91_PIN_PULLUP_DISABLE);
90 // PU = Enable RMII_BTB mode at power-up / reset.
91 HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PB4, AT91_PIN_IN);
92 HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PB4, AT91_PIN_PULLUP_DISABLE);
94 // Power Down Mode = 1 = normal operation
95 HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PB18, AT91_PIN_OUT);
96 HAL_ARM_AT91_GPIO_PUT(AT91_GPIO_PB18, 1);
98 // All the lines setup correctly. Now do a external reset and let the phy
99 // start up in the correct mode
100 HAL_WRITE_UINT32(AT91_RST+AT91_RST_RMR,AT91_RST_RMR_KEY|(1<<0x8));
101 HAL_WRITE_UINT32(AT91_RST+AT91_RST_RCR,AT91_RST_RCR_KEY|AT91_RST_RCR_EXTRST);
105 HAL_READ_UINT32(AT91_RST+AT91_RST_RSR,stat);
106 } while (!(stat & AT91_RST_RSR_NRST_SET));
110 //--------------------------------------------------------------------------
111 // EOF sam7ex256_misc.c