Das U-Boot: Universal Boot Loader

diff --git a/board/smdk2400/smdk2400.c b/board/smdk2400/smdk2400.c
new file mode 100644 (file)
index 0000000..2b61b2d
--- /dev/null
+++ b/board/smdk2400/smdk2400.c
@@ -0,0 +1,113 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.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 <s3c2400.h>
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_MODEM_SUPPORT
+static int key_pressed(void);
+int mdm_init (bd_t *);
+extern void disable_putc(void);
+extern void enable_putc(void);
+extern int hwflow_onoff(int);
+extern int do_mdm_init; /* defined in common/main.c */
+#endif /* CONFIG_MODEM_SUPPORT */
+
+/*
+ * Miscellaneous platform dependent initialisations
+ */
+
+int board_init (void)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       /* memory and cpu-speed are setup before relocation */
+       /* change the clock to be 50 MHz 1:1:1 */
+       rMPLLCON = 0x5c042;
+       rCLKDIVN = 0;
+       /* set up the I/O ports */
+       rPACON = 0x3ffff;
+       rPBCON = 0xaaaaaaaa;
+       rPBUP = 0xffff;
+       rPECON = 0x0;
+       rPEUP = 0x0;
+#ifdef CONFIG_HWFLOW
+       /*CTS[0] RTS[0] INPUT INPUT TXD[0] INPUT RXD[0] */
+       /*   10,   10,   00,   00,    10,   00,    10 */
+       rPFCON=0xa22;
+       /* Disable pull-up on Rx, Tx, CTS and RTS pins */
+       rPFUP=0x35;
+#else
+       /*INPUT INPUT INPUT INPUT TXD[0] INPUT RXD[0] */
+       /*   00,   00,   00,   00,    10,   00,    10 */
+       rPFCON = 0x22;
+       /* Disable pull-up on Rx and Tx pins */
+       rPFUP = 0x5;
+#endif /* CONFIG_HWFLOW */
+       rPGCON = 0x0;
+       rPGUP = 0x0;
+       rOPENCR = 0x0;
+
+       /* arch number of SAMSUNG-Board to MACH_TYPE_SMDK2400 */
+       gd->bd->bi_arch_number = 145;
+
+       /* adress of boot parameters */
+       gd->bd->bi_boot_params = 0x0C000100;
+
+#ifdef CONFIG_MODEM_SUPPORT
+       if (key_pressed()) {
+               disable_putc(); /* modem doesn't understand banner etc */
+               do_mdm_init = 1;
+       }
+#endif /* CONFIG_MODEM_SUPPORT */
+
+       return 0;
+}
+
+int dram_init (void)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+       gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+       return 0;
+}
+
+#ifdef CONFIG_MODEM_SUPPORT
+static int key_pressed(void)
+{
+       int rc;
+       if (1) {        /* check for button push here, now just return 1 */
+               rc = 1;
+       }
+
+       return rc;
+}
+#endif /* CONFIG_MODEM_SUPPORT */