* Patch by Shlomo Kut, 29 Mar 2004:

  Add support for MKS Instruments "Quantum" board

* Fix build problem with Cogent boards;
  avoid using <asm/byteorder.h> when using the host compiler

1 files changed, 257 insertions, 0 deletions

diff --git a/board/quantum/quantum.c b/board/quantum/quantum.c
new file mode 100644
index 0000000..8a73448
--- /dev/null
+++ b/board/quantum/quantum.c
@@ -0,0 +1,257 @@
+/*
+ * (C) Copyright 2000
+ * 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 <mpc8xx.h>
+#include "fpga.h"
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+unsigned long flash_init (void);
+
+/* ------------------------------------------------------------------------- */
+
+#define	_NOT_USED_	0xFFFFCC25
+
+const uint sdram_table[] = {
+	/*
+	 * Single Read. (Offset 00h in UPMA RAM)
+	 */
+	0x0F03CC04, 0x00ACCC24, 0x1FF74C20, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Burst Read. (Offset 08h in UPMA RAM)
+	 */
+	0x0F03CC04, 0x00ACCC24, 0x00FFCC20, 0x00FFCC20,
+	0x01FFCC20, 0x1FF74C20, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Single Write. (Offset 18h in UPMA RAM)
+	 */
+	0x0F03CC02, 0x00AC0C24, 0x1FF74C25, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Burst Write. (Offset 20h in UPMA RAM)
+	 */
+	0x0F03CC00, 0x00AC0C20, 0x00FFFC20, 0x00FFFC22,
+	0x01FFFC24, 0x1FF74C25, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Refresh. (Offset 30h in UPMA RAM)
+	 * (Initialization code at 0x36)
+	 */
+	0x0FF0CC24, 0xFFFFCC24, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, 0xEFFB8C34, 0x0FF74C34,
+	0x0FFACCB4, 0x0FF5CC34, 0x0FFCC34, 0x0FFFCCB4,
+
+	/*
+	 * Exception. (Offset 3Ch in UPMA RAM)
+	 */
+	0x0FEA8C34, 0x1FB54C34, 0xFFFFCC34, _NOT_USED_
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ */
+
+int checkboard (void)
+{
+	unsigned char *s = getenv ("serial#");
+
+	puts ("Board QUANTUM, Serial No: ");
+
+	for (; s && *s; ++s) {
+		if (*s == ' ')
+			break;
+		putc (*s);
+	}
+	putc ('\n');
+	return (0);		/* success */
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	long int size9;
+
+	upmconfig (UPMA, (uint *) sdram_table,
+		   sizeof (sdram_table) / sizeof (uint));
+
+	/* Refresh clock prescalar */
+	memctl->memc_mptpr = CFG_MPTPR;
+
+	memctl->memc_mar = 0x00000088;
+
+	/* Map controller banks 1 to the SDRAM bank */
+	memctl->memc_or1 = CFG_OR1_PRELIM;
+	memctl->memc_br1 = CFG_BR1_PRELIM;
+
+	memctl->memc_mamr = CFG_MAMR_9COL & (~(MAMR_PTAE));	/* no refresh yet */
+
+	udelay (200);
+
+	/* perform SDRAM initializsation sequence */
+
+	memctl->memc_mcr = 0x80002136;	/* SDRAM bank 0 */
+	udelay (1);
+
+	memctl->memc_mamr |= MAMR_PTAE;	/* enable refresh */
+
+	udelay (1000);
+
+	/* Check Bank 0 Memory Size,
+	 * 9 column mode
+	 */
+	size9 = dram_size (CFG_MAMR_9COL, (ulong *) SDRAM_BASE_PRELIM,
+			   SDRAM_MAX_SIZE);
+	/*
+	 * Final mapping:
+	 */
+	memctl->memc_or1 = ((-size9) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
+	udelay (1000);
+
+	return (size9);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Check memory range for valid RAM. A simple memory test determines
+ * the actually available RAM size between addresses `base' and
+ * `base + maxsize'. Some (not all) hardware errors are detected:
+ * - short between address lines
+ * - short between data lines
+ */
+
+static long int dram_size (long int mamr_value, long int *base,
+			   long int maxsize)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	volatile long int *addr;
+	ulong cnt, val, size;
+	ulong save[32];		/* to make test non-destructive */
+	unsigned char i = 0;
+
+	memctl->memc_mamr = mamr_value;
+
+	for (cnt = maxsize / sizeof (long); 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) {
+		/* Restore the original data before leaving the function.
+		 */
+		*addr = save[i];
+		for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
+			addr = (volatile ulong *) base + cnt;
+			*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)) {
+			size = cnt * sizeof (long);
+			/* Restore the original data before returning
+			 */
+			for (cnt <<= 1; cnt <= maxsize / sizeof (long);
+			     cnt <<= 1) {
+				addr = (volatile ulong *) base + cnt;
+				*addr = save[--i];
+			}
+			return (size);
+		}
+	}
+	return (maxsize);
+}
+
+/*
+ * Miscellaneous intialization
+ */
+int misc_init_r (void)
+{
+	char *fpga_data_str = getenv ("fpgadata");
+	char *fpga_size_str = getenv ("fpgasize");
+	void *fpga_data;
+	int fpga_size;
+	int status;
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	int flash_size;
+
+	/* Remap FLASH according to real size */
+	flash_size = flash_init ();
+	memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-flash_size & 0xFFFF8000);
+	memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;
+
+	if (fpga_data_str && fpga_size_str) {
+		fpga_data = (void *) simple_strtoul (fpga_data_str, NULL, 16);
+		fpga_size = simple_strtoul (fpga_size_str, NULL, 10);
+
+		status = fpga_boot (fpga_data, fpga_size);
+		if (status != 0) {
+			printf ("\nFPGA: Booting failed ");
+			switch (status) {
+			case ERROR_FPGA_PRG_INIT_LOW:
+				printf ("(Timeout: INIT not low after asserting PROGRAM*)\n ");
+				break;
+			case ERROR_FPGA_PRG_INIT_HIGH:
+				printf ("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
+				break;
+			case ERROR_FPGA_PRG_DONE:
+				printf ("(Timeout: DONE not high after programming FPGA)\n ");
+				break;
+			}
+		}
+	}
+	return 0;
+}