Add support for V37 board

(patch by Jón Benediktsson, 11 Dec 2002)

1 files changed, 218 insertions, 0 deletions

diff --git a/board/v37/v37.c b/board/v37/v37.c
new file mode 100644
index 0000000..764aff7
--- /dev/null
+++ b/board/v37/v37.c
@@ -0,0 +1,218 @@
+/*
+ * (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
+ */
+
+/*
+ * Yoo. Jonghoon, IPone, yooth@ipone.co.kr
+ * PPCboot port on RPXlite board
+ *
+ * DRAM related UPMA register values are modified.
+ * See RPXLite engineering note : 50MHz/60ns - UPM RAM WORDS
+ */
+
+#include <common.h>
+#include "mpc8xx.h"
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (void);
+
+/* ------------------------------------------------------------------------- */
+
+#define MBYTE 		(1024*1024)
+#define DRAM_DELAY  	0x00000379  /* DRAM delay count */
+#define	_NOT_USED_	0xFFFFCC25
+
+const uint sdram_table[] =
+{
+        /*  single read. (offset 0 in upm RAM) */
+        0x1F07D004, 0xEEAEE004, 0x11ADD004, 0xEFBBA000,
+        0x1FF75447, 0x1FF77C34, 0xEFEABC34, 0x1FB57C35,
+
+        /* burst read. (Offset 8 in upm RAM)   */
+        0x1F07D004, 0xEEAEE004, 0x00ADC004, 0x00AFC000,
+        0x00AFC000, 0x01AFC000, 0x0FBB8000, 0x1FF75447,
+        0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+        0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+
+        /* single write. (Offset 0x18 in upm RAM) */
+        0x1F27D004, 0xEEAEA000, 0x01B90004, 0x1FF75447,
+        0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+
+        /*  burst write. (Offset 0x20 in upm RAM) */
+        0x1F07D004, 0xEEAEA000, 0x00AD4000, 0x00AFC000,
+        0x00AFC000, 0x01BB8004, 0x1FF75447, 0xFFFFFFFF,
+        0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+        0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+
+        /* Refresh cycle, offset 0x30 */
+        0x1FF5DC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+        0xFFFFFC84, 0xFFFFFC07, 0xFFFFFFFF, 0xFFFFFFFF,
+        0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+
+        /* Exception, 0ffset 0x3C */
+        0x7FFFFC07, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+};
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ *
+ * Return 1 for now.
+ *
+ */
+
+int checkboard (void)
+{
+	printf("Marel V37\n") ;
+	return (0) ;
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+    volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+    volatile memctl8xx_t *memctl = &immap->im_memctl;
+    unsigned long temp;
+    volatile int delay_cnt;
+    long int ramsize;
+
+    ramsize = dram_size();
+
+	/* Refresh clock prescalar */
+    memctl->memc_mptpr = 0x400 ;
+
+    if( ramsize == 32*MBYTE )
+       temp = 0xd0904110;
+   else				/* 16MB */
+       temp = 0xd0802110;
+
+    memctl->memc_mbmr = temp;
+
+    upmconfig(UPMB, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+
+	/* Map controller banks 2 to the SDRAM bank */
+    memctl->memc_or2 = 0xA00 | (0 - ramsize);
+    memctl->memc_br2 = 0xC1;
+
+    memctl->memc_mbmr = temp | 0x08;
+    memctl->memc_mcr  = 0x80804130;
+
+    delay_cnt = 0;
+    while( delay_cnt++ < DRAM_DELAY )
+        ;
+
+    /* Run MRS command in location 5-8 of UPMB */
+
+    memctl->memc_mbmr = temp | 0x04;
+    memctl->memc_mar  = 0x88;
+
+    memctl->memc_mcr  = 0x80804105;
+
+    delay_cnt = 0;
+    while( delay_cnt++ < DRAM_DELAY )
+        ;
+
+#ifdef	CONFIG_CAN_DRIVER
+    /* Initialize OR3 / BR3 */
+    memctl->memc_or3 = CFG_OR3_CAN;
+    memctl->memc_br3 = CFG_BR3_CAN;
+
+    /* Initialize MBMR */
+    memctl->memc_mamr = MAMR_GPL_B4DIS;	/* GPL_B4 ouput line Disable */
+
+    /* Initialize UPMB for CAN: single read */
+    memctl->memc_mdr = 0xFFFFC004;
+    memctl->memc_mcr = 0x0100 | UPMA;
+
+    memctl->memc_mdr = 0x0FFFD004;
+    memctl->memc_mcr = 0x0101 | UPMA;
+
+    memctl->memc_mdr = 0x0FFFC000;
+    memctl->memc_mcr = 0x0102 | UPMA;
+
+    memctl->memc_mdr = 0x3FFFC004;
+    memctl->memc_mcr = 0x0103 | UPMA;
+
+    memctl->memc_mdr = 0xFFFFDC05;
+    memctl->memc_mcr = 0x0104 | UPMA;
+
+    /* Initialize UPMB for CAN: single write */
+    memctl->memc_mdr = 0xFFFCC004;
+    memctl->memc_mcr = 0x0118 | UPMA;
+
+    memctl->memc_mdr = 0xCFFCD004;
+    memctl->memc_mcr = 0x0119 | UPMA;
+
+    memctl->memc_mdr = 0x0FFCC000;
+    memctl->memc_mcr = 0x011A | UPMA;
+
+    memctl->memc_mdr = 0x7FFCC004;
+    memctl->memc_mcr = 0x011B | UPMA;
+
+    memctl->memc_mdr = 0xFFFDCC05;
+    memctl->memc_mcr = 0x011C | UPMA;
+#endif	/* CONFIG_CAN_DRIVER */
+
+    return (dram_size());
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Find size of RAM from configuration pins.
+ * The input pins that contain the memory size are also the debug port
+ * pins.  Normally they are configured as debug port pins.  To be able
+ * to read the memory configuration, we must deactivate the debug port
+ * and enable the pcmcia input pins.  Then return the register to
+ * previous state.
+ */
+
+static long int dram_size ()
+{
+    volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+    volatile sysconf8xx_t *siu = &immap->im_siu_conf;
+    volatile pcmconf8xx_t *pcm = &immap->im_pcmcia;
+    long int		  i, memory=1;
+    unsigned long siu_mcr;
+
+    siu_mcr = siu->sc_siumcr;
+    siu->sc_siumcr = siu_mcr & 0xFF9FFFFF;
+    for(i=0; i<10; i++) i = i;
+
+    memory = (pcm->pcmc_pipr>>12) & 0x3;
+
+    siu->sc_siumcr = siu_mcr;
+
+    switch( memory )
+    {
+        case 1:
+            return( 32*MBYTE );
+        case 2:
+            return( 64*MBYTE );
+        default:
+            break;
+    }
+    return( 16*MBYTE );
+}