summaryrefslogtreecommitdiff
path: root/board/at91rm9200dk/at91rm9200dk.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/at91rm9200dk/at91rm9200dk.c')
-rw-r--r--board/at91rm9200dk/at91rm9200dk.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/board/at91rm9200dk/at91rm9200dk.c b/board/at91rm9200dk/at91rm9200dk.c
new file mode 100644
index 0000000..7c3670b
--- /dev/null
+++ b/board/at91rm9200dk/at91rm9200dk.c
@@ -0,0 +1,105 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program 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 of
+ * the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <AT91RM9200.h>
+
+/* ------------------------------------------------------------------------- */
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+int board_init(void)
+ {
+ DECLARE_GLOBAL_DATA_PTR;
+
+ /* memory and cpu-speed are setup before relocation */
+ /* so we do _nothing_ here */
+
+ /* arch number of AT91RM9200DK-Board */
+ gd->bd->bi_arch_number = 251;
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+ return 0;
+}
+
+int dram_init(void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->bd->bi_dram[0].start = PHYS_SDRAM;
+ gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
+ return 0;
+}
+
+/*
+ * Disk On Chip (NAND) Millenium initialization.
+ * The NAND lives in the CS2* space
+ */
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+extern void
+nand_probe(ulong physadr);
+
+#define AT91_SMARTMEDIA_BASE 0x40000000 /* physical address to access memory on NCS3 */
+void
+nand_init(void)
+{
+ /* Setup Smart Media, fitst enable the address range of CS3 */
+ *AT91C_EBI_CSA |= AT91C_EBI_CS3A_SMC_SmartMedia;
+ /* set the bus interface characteristics based on
+ tDS Data Set up Time 30 - ns
+ tDH Data Hold Time 20 - ns
+ tALS ALE Set up Time 20 - ns
+ 16ns at 60 MHz ~= 3 */
+/*memory mapping structures */
+#define SM_ID_RWH (5 << 28)
+#define SM_RWH (1 << 28)
+#define SM_RWS (0 << 24)
+#define SM_TDF (1 << 8)
+#define SM_NWS (3)
+ AT91C_BASE_SMC2->SMC2_CSR[3] = ( SM_RWH|SM_RWS | AT91C_SMC2_ACSS_STANDARD |
+ AT91C_SMC2_DBW_8 | SM_TDF |
+ AT91C_SMC2_WSEN | SM_NWS);
+
+ /* enable the SMOE line PC0=SMCE, A21=CLE, A22=ALE */
+ *AT91C_PIOC_ASR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE;
+ *AT91C_PIOC_PDR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE;
+
+ /* Configure PC2 as input (signal READY of the SmartMedia) */
+ *AT91C_PIOC_PER = AT91C_PC2_BFAVD; /* enable direct output enable */
+ *AT91C_PIOC_ODR = AT91C_PC2_BFAVD; /* disable output */
+
+ /* Configure PB1 as input (signal Card Detect of the SmartMedia) */
+ *AT91C_PIOB_PER = AT91C_PIO_PB1; /* enable direct output enable */
+ *AT91C_PIOB_ODR = AT91C_PIO_PB1; /* disable output */
+
+ if (*AT91C_PIOB_PDSR & AT91C_PIO_PB1)
+ printf ("No ");
+ printf ("SmartMedia card inserted\n");
+
+ printf("Probing at 0x%.8x\n", AT91_SMARTMEDIA_BASE);
+ nand_probe(AT91_SMARTMEDIA_BASE);
+}
+#endif