|  | /* | 
|  | * 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 & ~MBMR_TLFB_MSK) | MBMR_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) | 
|  | { | 
|  | long size; | 
|  |  | 
|  | /*memctl->memc_mbmr = mbmr_value; */ | 
|  |  | 
|  | size = get_ram_size (base, maxsize); | 
|  |  | 
|  | if (size) { | 
|  | /*      printf("(%08lx)", size); */ | 
|  | } else { | 
|  | printf ("(0)"); | 
|  | } | 
|  |  | 
|  | return (size); | 
|  | } | 
|  |  | 
|  | #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 */ |