3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
6 * Modified for CMC_PU2 (removed Smart Media support) by Gary Jennejohn
9 * Modified for CMC_BASIC by Martin Krause (2005), TQ-Systems GmbH
11 * See file CREDITS for list of people who contributed to this
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #include <asm/mach-types.h>
32 #include <asm/arch/AT91RM9200.h>
34 /* ------------------------------------------------------------------------- */
36 * Miscelaneous platform dependent initialisations
38 #define CMC_HP_BASIC 1
46 DECLARE_GLOBAL_DATA_PTR;
47 AT91PS_PIO piob = AT91C_BASE_PIOB;
48 AT91PS_PIO pioc = AT91C_BASE_PIOC;
53 /* Correct IRDA resistor problem */
54 /* Set PA23_TXD in Output */
55 /* (AT91PS_PIO) AT91C_BASE_PIOA->PIO_OER = AT91C_PA23_TXD2; */
57 /* memory and cpu-speed are setup before relocation */
58 /* so we do _nothing_ here */
60 /* PIOB and PIOC clock enabling */
61 *AT91C_PMC_PCER = 1 << AT91C_ID_PIOB;
62 *AT91C_PMC_PCER = 1 << AT91C_ID_PIOC;
65 * configure PC0-PC3 as input without pull ups, so RS485 driver enable
66 * (CMC-PU2) and digital outputs (CMC-BASIC) are deactivated.
68 pioc->PIO_ODR = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
69 AT91C_PIO_PC2 | AT91C_PIO_PC3;
70 pioc->PIO_PPUDR = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
71 AT91C_PIO_PC2 | AT91C_PIO_PC3;
72 pioc->PIO_PER = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
73 AT91C_PIO_PC2 | AT91C_PIO_PC3;
76 * On CMC-PU2 board configure PB3-PB6 to input without pull ups to
77 * clear the duo LEDs (the external pull downs assure a proper
78 * signal). On CMC-BASIC and CMC-HP-BASIC set PB3-PB6 to output and
79 * drive it high, to configure current measurement on AINx.
81 if (hw_detect() & CMC_PU2) {
82 piob->PIO_ODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
83 AT91C_PIO_PB5 | AT91C_PIO_PB6;
85 else if ((hw_detect() & CMC_BASIC) || (hw_detect() & CMC_HP_BASIC)) {
86 piob->PIO_SODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
87 AT91C_PIO_PB5 | AT91C_PIO_PB6;
88 piob->PIO_OER = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
89 AT91C_PIO_PB5 | AT91C_PIO_PB6;
91 piob->PIO_PPUDR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
92 AT91C_PIO_PB5 | AT91C_PIO_PB6;
93 piob->PIO_PER = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
94 AT91C_PIO_PB5 | AT91C_PIO_PB6;
97 * arch number of CMC_PU2-Board. MACH_TYPE_CMC_PU2 is not supported in
98 * the linuxarm kernel, yet.
100 /* gd->bd->bi_arch_number = MACH_TYPE_CMC_PU2; */
101 gd->bd->bi_arch_number = 251;
102 /* adress of boot parameters */
103 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
110 DECLARE_GLOBAL_DATA_PTR;
112 gd->bd->bi_dram[0].start = PHYS_SDRAM;
113 gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
117 int checkboard (void)
119 if (hw_detect() & CMC_PU2)
120 puts ("Board: CMC-PU2 (Rittal GmbH)\n");
121 else if (hw_detect() & CMC_BASIC)
122 puts ("Board: CMC-BASIC (Rittal GmbH)\n");
123 else if (hw_detect() & CMC_HP_BASIC)
124 puts ("Board: CMC-HP-BASIC (Rittal GmbH)\n");
126 puts ("Board: unknown\n");
132 AT91PS_PIO pio = AT91C_BASE_PIOB;
134 /* PIOB clock enabling */
135 *AT91C_PMC_PCER = 1 << AT91C_ID_PIOB;
137 /* configure PB12 as input without pull up */
138 pio->PIO_ODR = AT91C_PIO_PB12;
139 pio->PIO_PPUDR = AT91C_PIO_PB12;
140 pio->PIO_PER = AT91C_PIO_PB12;
142 /* configure PB13 as input without pull up */
143 pio->PIO_ODR = AT91C_PIO_PB13;
144 pio->PIO_PPUDR = AT91C_PIO_PB13;
145 pio->PIO_PER = AT91C_PIO_PB13;
147 /* read board identification pin */
148 if (pio->PIO_PDSR & AT91C_PIO_PB12)
149 return ((pio->PIO_PDSR & AT91C_PIO_PB13)
152 return ((pio->PIO_PDSR & AT91C_PIO_PB13)
153 ? CMC_HP_BASIC : CMC_BASIC);