Initial revision

1 files changed, 375 insertions, 0 deletions

diff --git a/board/genietv/genietv.c b/board/genietv/genietv.c
new file mode 100644
index 0000000..8f32ad7
--- /dev/null
+++ b/board/genietv/genietv.c
@@ -0,0 +1,375 @@
+/*
+ * genietv/genietv.c
+ *
+ * The GENIETV is using the following physical memorymap (copied from
+ * the FADS configuration):
+ *
+ * ff020000 -> ff02ffff : pcmcia
+ * ff010000 -> ff01ffff : BCSR       connected to CS1, setup by 8xxROM
+ * ff000000 -> ff00ffff : IMAP       internal in the cpu
+ * 02800000 -> 0287ffff : flash      connected to CS0
+ * 00000000 -> nnnnnnnn : sdram      setup by U-Boot
+ *
+ * CS pins are connected as follows:
+ *
+ * CS0 -512Kb boot flash
+ * CS1 - SDRAM #1
+ * CS2 - SDRAM #2
+ * CS3 - Flash #1
+ * CS4 - Flash #2
+ * CS5 - LON (if present)
+ * CS6 - PCMCIA #1
+ * CS7 - PCMCIA #2
+ *
+ * Ports are configured as follows:
+ *
+ * PA7 - SDRAM banks enable
+ */
+
+#include <common.h>
+#include <mpc8xx.h>
+
+#define CFG_PA7		0x0100
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+
+/* ------------------------------------------------------------------------- */
+
+#define	_NOT_USED_	0xFFFFFFFF
+
+const uint sdram_table[] =
+{
+	/*
+	 * Single Read. (Offset 0 in UPMB RAM)
+	 */
+	0x1F0DFC04, 0xEEAFBC04, 0x11AF7C04, 0xEFBEEC00,
+	0x1FFDDC47, /* last */
+	/*
+	 * SDRAM Initialization (offset 5 in UPMB 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.
+	 *
+	 */
+		    0x1FFDDC34, 0xEFEEAC34, 0x1FBD5C35, /* last */
+	/*
+	 * Burst Read. (Offset 8 in UPMB RAM)
+	 */
+	0x1F0DFC04, 0xEEAFBC04, 0x10AF7C04, 0xF0AFFC00,
+	0xF0AFFC00, 0xF1AFFC00, 0xEFBEEC00, 0x1FFDDC47, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Single Write. (Offset 18 in UPMB RAM)
+	 */
+	0x1F2DFC04, 0xEEAFAC00, 0x01BE4C04, 0x1FFDDC47, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Burst Write. (Offset 20 in UPMB RAM)
+	 */
+	0x1F0DFC04, 0xEEAFAC00, 0x10AF5C00, 0xF0AFFC00,
+	0xF0AFFC00, 0xE1BEEC04, 0x1FFDDC47, /* last */
+					    _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Refresh  (Offset 30 in UPMB RAM)
+	 */
+	0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC84, 0xFFFFFC07, /* last */
+				_NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Exception. (Offset 3c in UPMB RAM)
+	 */
+	0x7FFFFC07, /* last */
+		    _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity
+ */
+
+int checkboard (void)
+{
+    puts ("Board: GenieTV\n");
+    return 0;
+}
+
+#if 0
+static void PrintState(void)
+{
+    volatile immap_t     *im  = (immap_t *)CFG_IMMR;
+    volatile memctl8xx_t *memctl = &im->im_memctl;
+
+    printf("\n0 - FLASH: B=%08x O=%08x", memctl->memc_br0, memctl->memc_or0);
+    printf("\n1 - SDRAM: B=%08x O=%08x", memctl->memc_br1, memctl->memc_or1);
+    printf("\n2 - SDRAM: B=%08x O=%08x", memctl->memc_br2, memctl->memc_or2);
+}
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+    volatile immap_t     *im  = (immap_t *)CFG_IMMR;
+    volatile memctl8xx_t *memctl = &im->im_memctl;
+    long int size_b0, size_b1, size8;
+
+    /* Enable SDRAM */
+
+    /* Configuring PA7 for general purpouse output pin */
+    im->im_ioport.iop_papar &= ~CFG_PA7 ;	/* 0 = general purpouse */
+    im->im_ioport.iop_padir |= CFG_PA7 ;	/* 1 = output */
+
+    /* Enable SDRAM - PA7 = 1 */
+    im->im_ioport.iop_padat |= CFG_PA7 ;	/* value of PA7 */
+
+    /*
+     * Preliminary prescaler for refresh (depends on number of
+     * banks): This value is selected for four cycles every 62.4 us
+     * with two SDRAM banks or four cycles every 31.2 us with one
+     * bank. It will be adjusted after memory sizing.
+     */
+    memctl->memc_mptpr = CFG_MPTPR_2BK_4K ;
+
+    memctl->memc_mbmr = CFG_MBMR_8COL;
+
+    upmconfig(UPMB, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+
+    /*
+     * Map controller banks 1 and 2 to the SDRAM banks 1 and 2 at
+     * preliminary addresses - these have to be modified after the
+     * SDRAM size has been determined.
+     */
+
+    memctl->memc_or1 = 0xF0000000 | CFG_OR_TIMING_SDRAM;
+    memctl->memc_br1 = ((SDRAM_BASE1_PRELIM & BR_BA_MSK) | BR_MS_UPMB | BR_V);
+
+    memctl->memc_or2 = 0xF0000000 | CFG_OR_TIMING_SDRAM;
+    memctl->memc_br2 = ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMB | BR_V);
+
+    /* perform SDRAM initialization sequence */
+    memctl->memc_mar  = 0x00000088;
+
+    memctl->memc_mcr  = 0x80802105;	/* SDRAM bank 0 */
+
+    memctl->memc_mcr  = 0x80804105;	/* SDRAM bank 1 */
+
+    /* Execute refresh 8 times */
+    memctl->memc_mbmr = (CFG_MBMR_8COL & ~MAMR_TLFB_MSK) | MAMR_TLFB_8X ;
+
+    memctl->memc_mcr  = 0x80802130;	/* SDRAM bank 0 - execute twice */
+
+    memctl->memc_mcr  = 0x80804130;	/* SDRAM bank 1 - execute twice */
+
+    /* Execute refresh 4 times */
+    memctl->memc_mbmr = CFG_MBMR_8COL;
+
+    /*
+     * Check Bank 0 Memory Size for re-configuration
+     *
+     * try 8 column mode
+     */
+
+#if 0
+    PrintState();
+#endif
+/*    printf ("\nChecking bank1..."); */
+    size8 = dram_size (CFG_MBMR_8COL, (ulong *)SDRAM_BASE1_PRELIM, SDRAM_MAX_SIZE);
+
+    size_b0 = size8 ;
+
+/*    printf ("\nChecking bank2..."); */
+    size_b1 = dram_size (memctl->memc_mbmr, (ulong *)SDRAM_BASE2_PRELIM,SDRAM_MAX_SIZE);
+
+    /*
+     * Final mapping: map bigger bank first
+     */
+
+    memctl->memc_or1 = ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
+    memctl->memc_br1 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMB | BR_V;
+
+    if (size_b1 > 0)
+    {
+        /*
+         * Position Bank 1 immediately above Bank 0
+         */
+        memctl->memc_or2 = ((-size_b1) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
+        memctl->memc_br2 = ((CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMB | BR_V) +
+	                   (size_b0 & BR_BA_MSK);
+    }
+	else
+    {
+        /*
+         * No bank 1
+         *
+         * invalidate bank
+         */
+        memctl->memc_br2 = 0;
+	/* adjust refresh rate depending on SDRAM type, one bank */
+	memctl->memc_mptpr = CFG_MPTPR_1BK_4K;
+    }
+
+    /* If no memory detected, disable SDRAM */
+    if ((size_b0 + size_b1) == 0)
+    {
+	printf("disabling SDRAM!\n");
+	/* Disable SDRAM - PA7 = 1 */
+	im->im_ioport.iop_padat &= ~CFG_PA7 ;	/* value of PA7 */
+    }
+/*	else */
+/*    printf("done! (%08lx)\n", size_b0 + size_b1); */
+
+#if 0
+    PrintState();
+#endif
+    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 mbmr_value, long int *base, long int maxsize)
+{
+    volatile long int	 *addr;
+    long int		  cnt, val;
+
+    /*memctl->memc_mbmr = mbmr_value; */
+
+    for (cnt = maxsize/sizeof(long); cnt > 0; cnt >>= 1) {
+	addr = base + cnt;	/* pointer arith! */
+
+	*addr = ~cnt;
+    }
+
+    /* write 0 to base address */
+    addr = base;
+    *addr = 0;
+
+    /* check at base address */
+    if ((val = *addr) != 0) {
+	printf("(0)");
+	return (0);
+    }
+
+    for (cnt = 1; ; cnt <<= 1) {
+	addr = base + cnt;	/* pointer arith! */
+
+	val = *addr;
+	if (val != (~cnt)) {
+/*	    printf("(%08lx)", cnt*sizeof(long)); */
+	    return (cnt * sizeof(long));
+	}
+    }
+    /* NOTREACHED */
+	return (0);
+}
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+
+#ifdef	CFG_PCMCIA_MEM_ADDR
+volatile unsigned char *pcmcia_mem = (unsigned char*)CFG_PCMCIA_MEM_ADDR;
+#endif
+
+int pcmcia_init(void)
+{
+	volatile pcmconf8xx_t	*pcmp;
+	uint v, slota, slotb;
+
+	/*
+	** Enable the PCMCIA for a Flash card.
+	*/
+	pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+
+#if 0
+	pcmp->pcmc_pbr0 = CFG_PCMCIA_MEM_ADDR;
+	pcmp->pcmc_por0 = 0xc00ff05d;
+#endif
+
+	/* Set all slots to zero by default. */
+	pcmp->pcmc_pgcra = 0;
+	pcmp->pcmc_pgcrb = 0;
+#ifdef PCMCIA_SLOT_A
+	pcmp->pcmc_pgcra = 0x40;
+#endif
+#ifdef PCMCIA_SLOT_B
+	pcmp->pcmc_pgcrb = 0x40;
+#endif
+
+	/* Check if any PCMCIA card is luged in. */
+	slota = (pcmp->pcmc_pipr & 0x18000000) == 0 ;
+	slotb = (pcmp->pcmc_pipr & 0x00001800) == 0 ;
+
+	if (!(slota || slotb))
+	{
+		printf("No card present\n");
+#ifdef PCMCIA_SLOT_A
+		pcmp->pcmc_pgcra = 0;
+#endif
+#ifdef PCMCIA_SLOT_B
+		pcmp->pcmc_pgcrb = 0;
+#endif
+		return -1;
+	}
+	    else
+	printf("Unknown card (");
+
+	v = 0;
+
+	switch( (pcmp->pcmc_pipr >> 14) & 3 )
+	{
+		case 0x00 :
+			printf("5V");
+			v = 5;
+			break;
+		case 0x01 :
+			printf("5V and 3V");
+			v = 3;
+			break;
+		case 0x03 :
+			printf("5V, 3V and x.xV");
+			v = 3;
+			break;
+	}
+
+	switch(v){
+	case 3:
+	    printf("; using 3V");
+	    /* Enable 3 volt Vcc. */
+
+	    break;
+
+	default:
+		printf("; unknown voltage");
+		return -1;
+	}
+	printf(")\n");
+	/* disable pcmcia reset after a while */
+
+	udelay(20);
+
+	pcmp->pcmc_pgcrb = 0;
+
+	/* If you using a real hd you should give a short
+	* spin-up time. */
+#ifdef CONFIG_DISK_SPINUP_TIME
+	udelay(CONFIG_DISK_SPINUP_TIME);
+#endif
+
+	return 0;
+}
+#endif	/* CFG_CMD_PCMCIA */