[ifxmips] cleanup uboot package

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13291 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 208 insertions, 0 deletions

diff --git a/package/uboot-ifxmips/files/board/ifx/danube/danube.c b/package/uboot-ifxmips/files/board/ifx/danube/danube.c
new file mode 100644
index 0000000000..b6174ba6d8
--- /dev/null
+++ b/package/uboot-ifxmips/files/board/ifx/danube/danube.c
@@ -0,0 +1,208 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@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 <command.h>
+#include <asm/addrspace.h>
+#include <asm/danube.h>
+
+#ifdef DANUBE_USE_DDR_RAM
+long int initdram(int board_type)
+{
+	return (1024*1024*DANUBE_DDR_RAM_SIZE);
+}
+#else
+extern uint danube_get_cpuclk(void);
+
+static ulong max_sdram_size(void)     /* per Chip Select */
+{
+	/* The only supported SDRAM data width is 16bit.
+	 */
+#define CFG_DW	4
+
+	/* The only supported number of SDRAM banks is 4.
+	 */
+#define CFG_NB	4
+
+	ulong cfgpb0 = *DANUBE_SDRAM_MC_CFGPB0;
+	int   cols   = cfgpb0 & 0xF;
+	int   rows   = (cfgpb0 & 0xF0) >> 4;
+	ulong size   = (1 << (rows + cols)) * CFG_DW * CFG_NB;
+
+	return size;
+}
+
+/*
+ * Check memory range for valid RAM. A simple memory test determines
+ * the actually available RAM size between addresses `base' and
+ * `base + maxsize'. 
+ */
+
+static long int dram_size(long int *base, long int maxsize)
+{
+	volatile long int *addr;
+	ulong cnt, val;
+	ulong save[32];			/* to make test non-destructive */
+	unsigned char i = 0;
+
+	for (cnt = (maxsize / sizeof (long)) >> 1; cnt > 0; cnt >>= 1) {
+		addr = base + cnt;		/* pointer arith! */
+
+		save[i++] = *addr;
+		*addr = ~cnt;
+	}
+
+	/* write 0 to base address */
+	addr = base;
+	save[i] = *addr;
+	*addr = 0;
+
+	/* check at base address */
+	if ((val = *addr) != 0) {
+		*addr = save[i];
+		return (0);
+	}
+
+	for (cnt = 1; cnt < maxsize / sizeof (long); cnt <<= 1) {
+		addr = base + cnt;		/* pointer arith! */
+
+		val = *addr;
+		*addr = save[--i];
+
+		if (val != (~cnt)) {
+			return (cnt * sizeof (long));
+		}
+	}
+	return (maxsize);
+}
+
+long int initdram(int board_type)
+{
+	int   rows, cols, best_val = *DANUBE_SDRAM_MC_CFGPB0;
+	ulong size, max_size       = 0;
+	ulong our_address;
+
+	/* load t9 into our_address */	
+	asm volatile ("move %0, $25" : "=r" (our_address) :);
+
+	/* Can't probe for RAM size unless we are running from Flash.
+	 * find out whether running from DRAM or Flash.
+	 */
+	if (PHYSADDR(our_address) < PHYSADDR(PHYS_FLASH_1))
+	{
+		return max_sdram_size();
+	}
+
+	for (cols = 0x8; cols <= 0xC; cols++)
+	{
+		for (rows = 0xB; rows <= 0xD; rows++)
+		{
+			*DANUBE_SDRAM_MC_CFGPB0 = (0x14 << 8) |
+			                           (rows << 4) | cols;
+			size = dram_size((ulong *)CFG_SDRAM_BASE,
+			                                     max_sdram_size());
+
+			if (size > max_size)
+			{
+				best_val = *DANUBE_SDRAM_MC_CFGPB0;
+				max_size = size;
+			}
+		}
+	}
+
+	*DANUBE_SDRAM_MC_CFGPB0 = best_val;
+	return max_size;
+}
+#endif
+
+int checkboard (void)
+{
+	/*    No such register in Amazon */
+#if 0
+	unsigned long chipid = *AMAZON_MCD_CHIPID;
+	int part_num;
+
+	puts ("Board: AMAZON ");
+	part_num = AMAZON_MCD_CHIPID_PART_NUMBER_GET(chipid);
+	switch (part_num) {
+	case AMAZON_CHIPID_STANDARD:
+		printf ("Standard Version, ");
+		break;
+	case AMAZON_CHIPID_YANGTSE:
+		printf ("Yangtse Version, ");
+		break;
+	default:
+		printf ("Unknown Part Number 0x%x ", part_num);
+		break;
+	}
+
+	printf ("Chip V1.%ld, ", AMAZON_MCD_CHIPID_VERSION_GET(chipid));
+     
+
+	printf("CPU Speed %d MHz\n", danube_get_cpuclk()/1000000);
+	
+#endif
+	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)
+{
+       	int devtype;
+	/* Configure EBU */
+//TODO: should we keep this?
+        //Set GPIO23 to be Flash CS1;
+	*DANUBE_GPIO_P1_ALTSEL0 = *DANUBE_GPIO_P1_ALTSEL0 | (1<<7);
+	*DANUBE_GPIO_P1_ALTSEL1 = *DANUBE_GPIO_P1_ALTSEL1 & ~(1<<7);
+	*DANUBE_GPIO_P1_DIR = *DANUBE_GPIO_P1_DIR | (1<<7) ;
+	*DANUBE_GPIO_P1_OD = *DANUBE_GPIO_P1_OD | (1<<7) ;
+	
+	*EBU_ADDR_SEL_1 = (NAND_BASE_ADDRESS&0x1fffff00)|0x31;
+	/* byte swap;minimum delay*/
+	*EBU_CON_1      = 0x40C155;
+	*EBU_NAND_CON   = 0x000005F3;
+
+	/* Set bus signals to inactive */
+	 NAND_READY_CLEAR;
+
+	 NAND_CE_CLEAR;
+         nand_probe(NAND_BASE_ADDRESS);
+
+
+
+	//nand_probe(AT91_SMARTMEDIA_BASE);
+}
+#endif
+
+
+