Add a common get_ram_size() function and modify the the

board-specific files to invoke that common implementation.

1 files changed, 124 insertions, 197 deletions

diff --git a/board/esteem192e/esteem192e.c b/board/esteem192e/esteem192e.c
index 986964b..f080d67 100644
--- a/board/esteem192e/esteem192e.c
+++ b/board/esteem192e/esteem192e.c
@@ -30,20 +30,15 @@
 
 /* ------------------------------------------------------------------------- */
 
-static long int dram_size ( long int *base, long int maxsize);
-
-/* ------------------------------------------------------------------------- */
-
 #define	_NOT_USED_	0xFFFFFFFF
 
-const uint sdram_table[] =
-{
+const uint sdram_table[] = {
 	/*
 	 * Single Read. (Offset 0 in UPMA RAM)
 	 *
 	 * active, NOP, read, precharge, NOP */
 	0x0F27CC04, 0x0EAECC04, 0x00B98C04, 0x00F74C00,
-	0x11FFCC05, /* last */
+	0x11FFCC05,		/* last */
 	/*
 	 * SDRAM Initialization (offset 5 in UPMA RAM)
 	 *
@@ -52,42 +47,42 @@ const uint sdram_table[] =
 	 * sequence, which is executed by a RUN command.
 	 * NOP, Program
 	 */
-	0x0F0A8C34, 0x1F354C37, /* last */
+	0x0F0A8C34, 0x1F354C37,	/* last */
 
-	_NOT_USED_,  /* Not used */
+	_NOT_USED_,		/* Not used */
 
 	/*
 	 * Burst Read. (Offset 8 in UPMA RAM)
 	 * active, NOP, read, NOP, NOP, NOP, NOP, NOP */
 	0x0F37CC04, 0x0EFECC04, 0x00FDCC04, 0x00FFCC00,
-	0x00FFCC00, 0x01FFCC00, 0x0FFFCC00, 0x1FFFCC05, /* last */
+	0x00FFCC00, 0x01FFCC00, 0x0FFFCC00, 0x1FFFCC05,	/* last */
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	/*
 	 * Single Write. (Offset 18 in UPMA RAM)
 	 * active, NOP, write, NOP, precharge, NOP */
 	0x0F27CC04, 0x0EAE8C00, 0x01BD4C04, 0x0FFB8C04,
-	0x0FF74C04, 0x1FFFCC05, /* last */
+	0x0FF74C04, 0x1FFFCC05,	/* last */
 	_NOT_USED_, _NOT_USED_,
 	/*
 	 * Burst Write. (Offset 20 in UPMA RAM)
 	 * active, NOP, write, NOP, NOP, NOP, NOP, NOP */
 	0x0F37CC04, 0x0EFE8C00, 0x00FD4C00, 0x00FFCC00,
-	0x00FFCC00, 0x01FFCC04, 0x0FFFCC04, 0x1FFFCC05, /* last */
+	0x00FFCC00, 0x01FFCC04, 0x0FFFCC04, 0x1FFFCC05,	/* last */
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	/*
 	 * Refresh  (Offset 30 in UPMA RAM)
 	 * precharge, NOP, auto_ref, NOP, NOP, NOP */
 	0x0FF74C34, 0x0FFACCB4, 0x0FF5CC34, 0x0FFFCC34,
-	0x0FFFCCB4, 0x1FFFCC35, /* last */
-				_NOT_USED_, _NOT_USED_,
+	0x0FFFCCB4, 0x1FFFCC35,	/* last */
+	_NOT_USED_, _NOT_USED_,
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	/*
 	 * Exception. (Offset 3c in UPMA RAM)
 	 */
-	0x0FFB8C00, 0x1FF74C03, /* last */
-				_NOT_USED_, _NOT_USED_
+	0x0FFB8C00, 0x1FF74C03,	/* last */
+	_NOT_USED_, _NOT_USED_
 };
 
 /* ------------------------------------------------------------------------- */
@@ -99,8 +94,8 @@ const uint sdram_table[] =
 
 int checkboard (void)
 {
-    puts ("Board: Esteem 192E\n");
-    return(0);
+	puts ("Board: Esteem 192E\n");
+	return (0);
 }
 
 /* ------------------------------------------------------------------------- */
@@ -108,209 +103,141 @@ int checkboard (void)
 
 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, size_b1;
-
-    /*
-     * Explain frequency of refresh here
-     */
-
-    memctl->memc_mptpr = 0x0200; /* divide by 32 */
-
-    memctl->memc_mamr = 0x18003112; /*CFG_MAMR_8COL;*/ /* 0x18005112 TODO: explain here */
-
-    upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	long int size_b0, size_b1;
 
-    /*
-     * Map cs 2 and 3 to the SDRAM banks 0 and 1 at
-     * preliminary addresses - these have to be modified after the
-     * SDRAM size has been determined.
-     */
-
-    memctl->memc_or2 = CFG_OR2_PRELIM; /* not defined yet */
-    memctl->memc_br2 = CFG_BR2_PRELIM;
+	/*
+	 * Explain frequency of refresh here
+	 */
 
-    memctl->memc_or3 = CFG_OR3_PRELIM;
-    memctl->memc_br3 = CFG_BR3_PRELIM;
+	memctl->memc_mptpr = 0x0200;	/* divide by 32 */
 
+	memctl->memc_mamr = 0x18003112;	/*CFG_MAMR_8COL; *//* 0x18005112 TODO: explain here */
 
-    /* perform SDRAM initializsation sequence */
-    memctl->memc_mar  = 0x00000088;
+	upmconfig (UPMA, (uint *) sdram_table,
+		   sizeof (sdram_table) / sizeof (uint));
 
-    memctl->memc_mcr  = 0x80004830;	/* SDRAM bank 0 execute 8 refresh */
+	/*
+	 * Map cs 2 and 3 to the SDRAM banks 0 and 1 at
+	 * preliminary addresses - these have to be modified after the
+	 * SDRAM size has been determined.
+	 */
 
-    memctl->memc_mcr  = 0x80004105; 	/* SDRAM bank 0 */
+	memctl->memc_or2 = CFG_OR2_PRELIM;	/* not defined yet */
+	memctl->memc_br2 = CFG_BR2_PRELIM;
 
+	memctl->memc_or3 = CFG_OR3_PRELIM;
+	memctl->memc_br3 = CFG_BR3_PRELIM;
 
-    memctl->memc_mcr  = 0x80006830;	/* SDRAM bank 1 execute 8 refresh */
 
-    memctl->memc_mcr  = 0x80006105;	/* SDRAM bank 1 */
+	/* perform SDRAM initializsation sequence */
+	memctl->memc_mar = 0x00000088;
+	memctl->memc_mcr = 0x80004830;	/* SDRAM bank 0 execute 8 refresh */
+	memctl->memc_mcr = 0x80004105;	/* SDRAM bank 0 */
 
+	memctl->memc_mcr = 0x80006830;	/* SDRAM bank 1 execute 8 refresh */
+	memctl->memc_mcr = 0x80006105;	/* SDRAM bank 1 */
 
-    memctl->memc_mamr = CFG_MAMR_8COL; /* 0x18803112  start refresh timer TODO: explain here */
+	memctl->memc_mamr = CFG_MAMR_8COL;	/* 0x18803112  start refresh timer TODO: explain here */
 
 /* printf ("banks 0 and 1 are programed\n"); */
 
-    /*
-     * Check Bank 0 Memory Size for re-configuration
-     *
-     */
-
-    size_b0 = dram_size ((ulong *)SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
-
-    size_b1 = dram_size ((ulong *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
-
-
- printf ("\nbank 0 size %lu\nbank 1 size %lu\n",size_b0,size_b1);
+	/*
+	 * Check Bank 0 Memory Size for re-configuration
+	 *
+	 */
+	size_b0 = get_ram_size ((ulong *) SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
+	size_b1 = get_ram_size ((ulong *) SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
 
+	printf ("\nbank 0 size %lu\nbank 1 size %lu\n", size_b0, size_b1);
 
 /* printf ("bank 1 size %u\n",size_b1); */
 
-    if(size_b1 == 0) {
-
-    /*
-     * Adjust refresh rate if bank 0 isn't stuffed
-     */
-
-       memctl->memc_mptpr = 0x0400; /* divide by 64 */
-       memctl->memc_br3 &= 0x0FFFFFFFE;
-
-    /*
-     * Adjust OR2 for size of bank 0
-     */
-       memctl->memc_or2 |= 7 * size_b0;
-
-    }
-
-    else {
-
-       if(size_b0 < size_b1) {
-	  memctl->memc_br2 &= 0x00007FFE;
-	  memctl->memc_br3 &= 0x00007FFF;
-
-	 /*
-	  * Adjust OR3 for size of bank 1
-	  */
-	  memctl->memc_or3 |= 15 * size_b1;
-
-	 /*
-	  * Adjust OR2 for size of bank 0
-	  */
-	  memctl->memc_or2 |= 15 * size_b0;
-
-	  memctl->memc_br2 += (size_b1 + 1);
-
-       }
-       else {
-
-	  memctl->memc_br3 &= 0x00007FFE;
-
-
-	 /*
-	  * Adjust OR2 for size of bank 0
-	  */
-	  memctl->memc_or2 |= 15 * size_b0;
-
-	 /*
-	  * Adjust OR3 for size of bank 1
-	  */
-	  memctl->memc_or3 |= 15 * size_b1;
-
-	  memctl->memc_br3 += (size_b0 + 1);
-
-
-       }
-    }
-
-
-/* before leaving set all unused i/o pins to outputs */
-
-/*
- *      --*Unused Pin List*--
- *
- * group/port           bit number
- * IP_B                 0,1,3,4,5  Taken care of in pcmcia-cs-x.x.xx
- * PA                   5,7,8,9,14,15
- * PB                   22,23,31
- * PC                   4,5,6,7,10,11,12,13,14,15
- * PD                   5,6,7
- *
- */
-
-/*
- *   --*Pin Used for I/O List*--
- *
- * port     input bit number    output bit number    either
- * PB                           18,26,27
- * PD       3,4                                      8,9,10,11,12,13,14,15
- *
- */
-
-
-    immap->im_ioport.iop_papar &= ~0x05C3;    /* set pins as io */
-    immap->im_ioport.iop_padir |= 0x05C3;     /* set pins as output */
-    immap->im_ioport.iop_paodr &= 0x0008;     /* config pins 9 & 14 as normal outputs */
-    immap->im_ioport.iop_padat |= 0x05C3;     /* set unused pins as high */
-
-    immap->im_cpm.cp_pbpar &= ~0x00001331; /* set unused port b pins as io */
-    immap->im_cpm.cp_pbdir |= 0x00001331;  /* set unused port b pins as output */
-    immap->im_cpm.cp_pbodr &= ~0x00001331; /* config bits 18,22,23,26,27 & 31 as normal outputs */
-    immap->im_cpm.cp_pbdat |= 0x00001331;  /* set T/E LED, /NV_CS, & /POWER_ADJ_CS and the rest to a high */
-
-    immap->im_ioport.iop_pcpar &= ~0x0F3F;    /* set unused port c pins as io */
-    immap->im_ioport.iop_pcdir |= 0x0F3F;     /* set unused port c pins as output */
-    immap->im_ioport.iop_pcso  &= ~0x0F3F;    /* clear special purpose bit for unused port c pins for clarity */
-    immap->im_ioport.iop_pcdat |= 0x0F3F;     /* set unused port c pins high*/
-
-    immap->im_ioport.iop_pdpar &= 0xE000;     /* set pins as io */
-    immap->im_ioport.iop_pddir &= 0xE000;     /* set bit 3 & 4 as inputs */
-    immap->im_ioport.iop_pddir |= 0x07FF;     /* set bits 5 - 15 as outputs */
-    immap->im_ioport.iop_pddat = 0x0055;      /* set alternating pattern on test port */
-
-
-    return (size_b0 + size_b1);
-}
-
-/* ------------------------------------------------------------------------- */
-
-/*
- * 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 *base, long int maxsize)
-{
+	if (size_b1 == 0) {
+		/*
+		 * Adjust refresh rate if bank 0 isn't stuffed
+		 */
+		memctl->memc_mptpr = 0x0400;	/* divide by 64 */
+		memctl->memc_br3 &= 0x0FFFFFFFE;
+
+		/*
+		 * Adjust OR2 for size of bank 0
+		 */
+		memctl->memc_or2 |= 7 * size_b0;
+	} else {
+		if (size_b0 < size_b1) {
+			memctl->memc_br2 &= 0x00007FFE;
+			memctl->memc_br3 &= 0x00007FFF;
+
+			/*
+			 * Adjust OR3 for size of bank 1
+			 */
+			memctl->memc_or3 |= 15 * size_b1;
+
+			/*
+			 * Adjust OR2 for size of bank 0
+			 */
+			memctl->memc_or2 |= 15 * size_b0;
+			memctl->memc_br2 += (size_b1 + 1);
+		} else {
+			memctl->memc_br3 &= 0x00007FFE;
+
+			/*
+			 * Adjust OR2 for size of bank 0
+			 */
+			memctl->memc_or2 |= 15 * size_b0;
+
+			/*
+			 * Adjust OR3 for size of bank 1
+			 */
+			memctl->memc_or3 |= 15 * size_b1;
+			memctl->memc_br3 += (size_b0 + 1);
+		}
+	}
 
-    volatile long int	 *addr;
-    long int		  cnt, val;
+	/* before leaving set all unused i/o pins to outputs */
 
-    for (cnt = maxsize/sizeof(long); cnt > 0; cnt >>= 1) {
-	addr = base + cnt;	/* pointer arith! */
+	/*
+	 *      --*Unused Pin List*--
+	 *
+	 * group/port           bit number
+	 * IP_B                 0,1,3,4,5  Taken care of in pcmcia-cs-x.x.xx
+	 * PA                   5,7,8,9,14,15
+	 * PB                   22,23,31
+	 * PC                   4,5,6,7,10,11,12,13,14,15
+	 * PD                   5,6,7
+	 *
+	 */
 
-	*addr = ~cnt;
-    }
+	/*
+	 *   --*Pin Used for I/O List*--
+	 *
+	 * port     input bit number    output bit number    either
+	 * PB                           18,26,27
+	 * PD       3,4                                      8,9,10,11,12,13,14,15
+	 *
+	 */
 
-    /* write 0 to base address */
-    addr = base;
-    *addr = 0;
+	immap->im_ioport.iop_papar &= ~0x05C3;	/* set pins as io */
+	immap->im_ioport.iop_padir |= 0x05C3;	/* set pins as output */
+	immap->im_ioport.iop_paodr &= 0x0008;	/* config pins 9 & 14 as normal outputs */
+	immap->im_ioport.iop_padat |= 0x05C3;	/* set unused pins as high */
 
-    /* check at base address */
-    if ((val = *addr) != 0) {
-	return (0);
-    }
+	immap->im_cpm.cp_pbpar &= ~0x00001331;	/* set unused port b pins as io */
+	immap->im_cpm.cp_pbdir |= 0x00001331;	/* set unused port b pins as output */
+	immap->im_cpm.cp_pbodr &= ~0x00001331;	/* config bits 18,22,23,26,27 & 31 as normal outputs */
+	immap->im_cpm.cp_pbdat |= 0x00001331;	/* set T/E LED, /NV_CS, & /POWER_ADJ_CS and the rest to a high */
 
-    for (cnt = 1; ; cnt <<= 1) {
-	addr = base + cnt;	/* pointer arith! */
+	immap->im_ioport.iop_pcpar &= ~0x0F3F;	/* set unused port c pins as io */
+	immap->im_ioport.iop_pcdir |= 0x0F3F;	/* set unused port c pins as output */
+	immap->im_ioport.iop_pcso &= ~0x0F3F;	/* clear special purpose bit for unused port c pins for clarity */
+	immap->im_ioport.iop_pcdat |= 0x0F3F;	/* set unused port c pins high */
 
-	val = *addr;
+	immap->im_ioport.iop_pdpar &= 0xE000;	/* set pins as io */
+	immap->im_ioport.iop_pddir &= 0xE000;	/* set bit 3 & 4 as inputs */
+	immap->im_ioport.iop_pddir |= 0x07FF;	/* set bits 5 - 15 as outputs */
+	immap->im_ioport.iop_pddat = 0x0055;	/* set alternating pattern on test port */
 
-	if (val != (~cnt)) {
-	    return (cnt * sizeof(long));
-	}
-    }
-    /* NOTREACHED */
+	return (size_b0 + size_b1);
 }