Initial revision

1 files changed, 324 insertions, 0 deletions

diff --git a/board/spd8xx/spd8xx.c b/board/spd8xx/spd8xx.c
new file mode 100644
index 0000000..6428896
--- /dev/null
+++ b/board/spd8xx/spd8xx.c
@@ -0,0 +1,324 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Ulrich Lutz, Speech Design GmbH, ulutz@datalab.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 <commproc.h>
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+
+/* ------------------------------------------------------------------------- */
+
+#define	_NOT_USED_	0xFFFFFFFF
+
+const uint sharc_table[] =
+{
+	/*
+	 * Single Read. (Offset 0 in UPM RAM)
+	 */
+	0x0FF3FC04, 0x0FF3EC00, 0x7FFFEC04, 0xFFFFEC04,
+	0xFFFFEC05, /* last */
+	            _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Burst Read. (Offset 8 in UPM RAM)
+	 */
+	/* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Single Write. (Offset 18 in UPM RAM)
+	 */
+	0x0FAFFC04, 0x0FAFEC00, 0x7FFFEC04, 0xFFFFEC04,
+	0xFFFFEC05, /* last */
+	            _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Burst Write. (Offset 20 in UPM RAM)
+	 */
+	/* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Refresh  (Offset 30 in UPM RAM)
+	 */
+	/* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Exception. (Offset 3c in UPM RAM)
+	 */
+	0x7FFFFC07, /* last */
+		    _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+
+const uint sdram_table[] =
+{
+	/*
+	 * Single Read. (Offset 0 in UPM RAM)
+	 */
+	0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00,
+	0x1FF77C47, /* last */
+	/*
+	 * SDRAM Initialization (offset 5 in UPM RAM)
+	 *
+         * This is no UPM entry point. The following definition uses
+         * the remaining space to establish an initialization
+         * sequence, which is executed by a RUN command.
+	 *
+	 */
+		    0x1FF77C35, 0xEFEABC34, 0x1FB57C35, /* last */
+	/*
+	 * Burst Read. (Offset 8 in UPM RAM)
+	 */
+	0x1F07FC04, 0xEEAEFC04, 0x10ADFC04, 0xF0AFFC00,
+	0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C47, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Single Write. (Offset 18 in UPM RAM)
+	 */
+	0x1F27FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Burst Write. (Offset 20 in UPM RAM)
+	 */
+	0x1F07FC04, 0xEEAEBC00, 0x10AD7C00, 0xF0AFFC00,
+	0xF0AFFC00, 0xE1BBBC04, 0x1FF77C47, /* last */
+					    _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Refresh  (Offset 30 in UPM RAM)
+	 */
+	0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC84, 0xFFFFFC07, /* last */
+				_NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Exception. (Offset 3c in UPM RAM)
+	 */
+	0x7FFFFC07, /* last */
+		    _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ *
+ */
+
+int checkboard (void)
+{
+	puts ("Board: SPD823TS\n");
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int
+initdram (int board_type)
+{
+    volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+    volatile memctl8xx_t *memctl = &immap->im_memctl;
+    long int size_b0;
+
+#if 0
+    /*
+     * Map controller bank 2 to the SRAM bank at preliminary address.
+     */
+    memctl->memc_or2 = CFG_OR2;
+    memctl->memc_br2 = CFG_BR2;
+#endif
+
+    /*
+     * Map controller bank 4 to the PER8 bank.
+     */
+    memctl->memc_or4 = CFG_OR4;
+    memctl->memc_br4 = CFG_BR4;
+
+#if 0
+    /* Configure SHARC at UMA */
+    upmconfig(UPMA, (uint *)sharc_table, sizeof(sharc_table)/sizeof(uint));
+    /* Map controller bank 5 to the SHARC */
+    memctl->memc_or5 = CFG_OR5;
+    memctl->memc_br5 = CFG_BR5;
+#endif
+
+    memctl->memc_mamr = 0x00001000;
+
+    /* Configure SDRAM at UMB */
+    upmconfig(UPMB, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+
+    memctl->memc_mptpr = CFG_MPTPR_1BK_8K;
+
+    memctl->memc_mar = 0x00000088;
+
+    /*
+     * Map controller bank 3 to the SDRAM bank at preliminary address.
+     */
+    memctl->memc_or3 = CFG_OR3_PRELIM;
+    memctl->memc_br3 = CFG_BR3_PRELIM;
+
+    memctl->memc_mbmr = CFG_MBMR_8COL;	/* refresh not enabled yet */
+
+    udelay(200);
+    memctl->memc_mcr = 0x80806105;
+    udelay(1);
+    memctl->memc_mcr = 0x80806130;
+    udelay(1);
+    memctl->memc_mcr = 0x80806130;
+    udelay(1);
+    memctl->memc_mcr = 0x80806106;
+
+    memctl->memc_mbmr |= MAMR_PTBE;	/* refresh enabled */
+
+    /*
+     * Check Bank 0 Memory Size for re-configuration
+     */
+    size_b0 = dram_size (CFG_MBMR_8COL, (ulong *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
+
+    memctl->memc_mbmr = CFG_MBMR_8COL | MAMR_PTBE;
+
+    return (size_b0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * 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;
+    ulong		  save[32];	/* to make test non-destructive */
+    unsigned char	  i = 0;
+
+    memctl->memc_mbmr = 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) {
+	*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);
+}
+
+/* ------------------------------------------------------------------------- */
+
+void	reset_phy(void)
+{
+	immap_t *immr = (immap_t *)CFG_IMMR;
+	ushort sreg;
+
+	/* Configure extra port pins for NS DP83843 PHY */
+	immr->im_ioport.iop_papar &= ~(PA_ENET_MDC | PA_ENET_MDIO);
+
+	sreg  = immr->im_ioport.iop_padir;
+	sreg |=   PA_ENET_MDC;		/* Mgmt. Data Clock is Output */
+	sreg &= ~(PA_ENET_MDIO);	/* Mgmt. Data I/O is bidirect. => Input */
+	immr->im_ioport.iop_padir = sreg;
+
+	immr->im_ioport.iop_padat &= ~(PA_ENET_MDC);	/* set MDC = 0 */
+
+	/*
+         * RESET in implemented by a positive pulse of at least 1 us
+         * at the reset pin.
+	 *
+	 * Configure RESET pins for NS DP83843 PHY, and RESET chip.
+	 *
+	 * Note: The RESET pin is high active, but there is an
+	 *	 inverter on the SPD823TS board...
+	 */
+	immr->im_ioport.iop_pcpar &= ~(PC_ENET_RESET);
+	immr->im_ioport.iop_pcdir |=   PC_ENET_RESET;
+	/* assert RESET signal of PHY */
+	immr->im_ioport.iop_pcdat &= ~(PC_ENET_RESET);
+	udelay (10);
+	/* de-assert RESET signal of PHY */
+	immr->im_ioport.iop_pcdat |=   PC_ENET_RESET;
+	udelay (10);
+}
+
+/* ------------------------------------------------------------------------- */
+
+void ide_set_reset(int on)
+{
+	volatile immap_t *immr = (immap_t *)CFG_IMMR;
+
+	/*
+	 * Configure PC for IDE Reset Pin
+	 */
+	if (on) {		/* assert RESET */
+		immr->im_ioport.iop_pcdat &= ~(CFG_PC_IDE_RESET);
+	} else {		/* release RESET */
+		immr->im_ioport.iop_pcdat |=   CFG_PC_IDE_RESET;
+	}
+
+	/* program port pin as GPIO output */
+	immr->im_ioport.iop_pcpar &= ~(CFG_PC_IDE_RESET);
+	immr->im_ioport.iop_pcso  &= ~(CFG_PC_IDE_RESET);
+	immr->im_ioport.iop_pcdir |=   CFG_PC_IDE_RESET;
+}
+
+/* ------------------------------------------------------------------------- */