* Add support for log buffer which can be passed to Linux kernel's

  syslog mechanism; used especially for POST results.

* Patch by Klaus Heydeck, 31 Oct 2002:
  Add initial support for kup4k board

1 files changed, 218 insertions, 0 deletions

diff --git a/common/cmd_pcmcia.c b/common/cmd_pcmcia.c
index ccf21a9..6d01e70 100644
--- a/common/cmd_pcmcia.c
+++ b/common/cmd_pcmcia.c
@@ -1975,6 +1975,224 @@ done:
 
 #endif	/* R360MPI */
 
+/* ---------------------------------------------------------------------------- */
+/* KUP4K Board						*/
+/* ---------------------------------------------------------------------------- */
+#if defined(CONFIG_KUP4K)
+
+#define PCMCIA_BOARD_MSG "KUP4K"
+
+#define KUP4K_PCMCIA_B_3V3 (0x00020000)
+
+static int hardware_enable(int slot)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	volatile sysconf8xx_t	*sysp;
+	uint reg, mask;
+
+	debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+	udelay(10000);
+
+	immap = (immap_t *)CFG_IMMR;
+	sysp  = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
+	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+
+	/*
+	 * Configure SIUMCR to enable PCMCIA port B
+	 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
+	 */
+	sysp->sc_siumcr &= ~SIUMCR_DBGC11;	/* set DBGC to 00 */
+
+	/* clear interrupt state, and disable interrupts */
+	pcmp->pcmc_pscr =  PCMCIA_MASK(_slot_);
+	pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
+
+	/* disable interrupts & DMA */
+	PCMCIA_PGCRX(_slot_) = 0;
+
+	/*
+	 * Disable PCMCIA buffers (isolate the interface)
+	 * and assert RESET signal
+	 */
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg |=  __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |=  __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	/*
+	 * Configure Port B pins for
+	 * 3 Volts enable
+	 */
+	cp->cp_pbdir |=  KUP4K_PCMCIA_B_3V3;
+	cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
+	/* remove all power */
+	cp->cp_pbdat |=  KUP4K_PCMCIA_B_3V3; /* active low */
+
+	/*
+	 * Make sure there is a card in the slot, then configure the interface.
+	 */
+	udelay(10000);
+	debug ("[%d] %s: PIPR(%p)=0x%x\n",
+		__LINE__,__FUNCTION__,
+		&(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
+	if (pcmp->pcmc_pipr & 0x00001800) {
+		printf ("   No Card found\n");
+		return (1);
+	}
+
+	/*
+	 * Power On.
+	 */
+	mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
+	reg  = pcmp->pcmc_pipr;
+	debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
+		reg,
+		(reg&PCMCIA_VS1(slot))?"n":"ff",
+		(reg&PCMCIA_VS2(slot))?"n":"ff");
+	if ((reg & mask) == mask) {
+		puts (" 5.0V card found: NOT SUPPORTED !!!\n");
+	} else {
+		cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
+		puts (" 3.3V card found: ");
+	}
+#if 0
+	/*  VCC switch error flag, PCMCIA slot INPACK_ pin */
+	cp->cp_pbdir &= ~(0x0020 | 0x0010);
+	cp->cp_pbpar &= ~(0x0020 | 0x0010);
+	udelay(500000);
+#endif
+	debug ("Enable PCMCIA buffers and stop RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg &= ~__MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg &= ~__MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+
+	udelay(250000);	/* some cards need >150 ms to come up :-( */
+
+	debug ("# hardware_enable done\n");
+
+	return (0);
+}
+
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+static int hardware_disable(int slot)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	u_long reg;
+
+	debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+	immap = (immap_t *)CFG_IMMR;
+	pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+	
+	/* remove all power */
+	cp->cp_pbdat |= DDC4000_PCMCIA_B_3V3;
+
+	/* Configure PCMCIA General Control Register */
+	PCMCIA_PGCRX(_slot_) = 0;
+
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |= __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+
+	udelay(10000);
+
+	return (0);
+}
+#endif	/* CFG_CMD_PCMCIA */
+
+
+
+static int voltage_set(int slot, int vcc, int vpp)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	u_long reg;
+
+	debug ("voltage_set: "	\
+		PCMCIA_BOARD_MSG	\
+		" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
+		'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
+
+	immap = (immap_t *)CFG_IMMR;
+	pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+
+	/*
+	 * Disable PCMCIA buffers (isolate the interface)
+	 * and assert RESET signal
+	 */
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg |=  __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |=  __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	debug ("PCMCIA power OFF\n");
+	/*
+	 * Configure Port B pins for
+	 * 3 Volts enable
+	 */
+	cp->cp_pbdir |=  KUP4K_PCMCIA_B_3V3;
+	cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
+	/* remove all power */
+	cp->cp_pbdat |=  KUP4K_PCMCIA_B_3V3; /* active low */
+
+	switch(vcc) {
+	case  0: 		break;
+	case 33:
+		cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
+		debug ("PCMCIA powered at 3.3V\n");
+		break;
+	case 50:
+		debug ("PCMCIA: 5Volt vcc not supported\n");
+		break;
+	default:
+		puts("PCMCIA: vcc not supported");
+		break;
+	}
+
+	/* Checking supported voltages */
+
+	debug ("PIPR: 0x%x --> %s\n",
+		pcmp->pcmc_pipr,
+		(pcmp->pcmc_pipr & 0x00008000) 
+			? "only 5 V --> NOT SUPPORTED"
+			: "can do 3.3V");
+
+
+	debug ("Enable PCMCIA buffers and stop RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg &= ~__MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg &= ~__MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
+		slot+'A');
+	return (0);
+}
+
+#endif	/* KUP4K */
+
+
+
+
 
 /* ---------------------------------------------------------------------------- */
 /* End of Board Specific Stuff							*/