Merge with /home/wd/git/u-boot/master

1 files changed, 304 insertions, 0 deletions

diff --git a/drivers/mpc8xx_pcmcia.c b/drivers/mpc8xx_pcmcia.c
new file mode 100644
index 0000000..399a719
--- /dev/null
+++ b/drivers/mpc8xx_pcmcia.c
@@ -0,0 +1,304 @@
+#include <common.h>
+#if defined(CONFIG_8xx)
+#include <mpc8xx.h>
+#endif
+#include <pcmcia.h>
+
+#undef	CONFIG_PCMCIA
+
+#if	(CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+#define	CONFIG_PCMCIA
+#endif
+
+#if	(CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
+#define	CONFIG_PCMCIA
+#endif
+
+#if defined(CONFIG_8xx)	&& defined(CONFIG_PCMCIA)
+
+#if	defined(CONFIG_IDE_8xx_PCCARD)
+extern int check_ide_device (int slot);
+#endif
+
+extern int pcmcia_hardware_enable (int slot);
+extern int pcmcia_voltage_set(int slot, int vcc, int vpp);
+
+#if	(CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+extern int pcmcia_hardware_disable(int slot);
+#endif
+
+static u_int m8xx_get_graycode(u_int size);
+#if 0 /* Disabled */
+static u_int m8xx_get_speed(u_int ns, u_int is_io);
+#endif
+
+/* look up table for pgcrx registers */
+u_int *pcmcia_pgcrx[2] = {
+	&((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_pgcra,
+	&((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_pgcrb,
+};
+
+/*
+ * Search this table to see if the windowsize is
+ * supported...
+ */
+
+#define M8XX_SIZES_NO 32
+
+static const u_int m8xx_size_to_gray[M8XX_SIZES_NO] =
+{ 0x00000001, 0x00000002, 0x00000008, 0x00000004,
+  0x00000080, 0x00000040, 0x00000010, 0x00000020,
+  0x00008000, 0x00004000, 0x00001000, 0x00002000,
+  0x00000100, 0x00000200, 0x00000800, 0x00000400,
+
+  0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
+  0x01000000, 0x02000000, 0xffffffff, 0x04000000,
+  0x00010000, 0x00020000, 0x00080000, 0x00040000,
+  0x00800000, 0x00400000, 0x00100000, 0x00200000 };
+
+
+/* -------------------------------------------------------------------- */
+
+#ifdef	CONFIG_HMI10
+#define	HMI10_FRAM_TIMING	(	PCMCIA_SHT(2)	\
+ 				|	PCMCIA_SST(2)	\
+ 				|	PCMCIA_SL(4))
+#endif
+
+#if	defined(CONFIG_LWMON) || defined(CONFIG_NSCU)
+#define	CFG_PCMCIA_TIMING	(	PCMCIA_SHT(9)	\
+ 				|	PCMCIA_SST(3)	\
+ 				|	PCMCIA_SL(12))
+#else
+#define	CFG_PCMCIA_TIMING	(	PCMCIA_SHT(2)	\
+ 				|	PCMCIA_SST(4)	\
+ 				|	PCMCIA_SL(9))
+#endif
+
+/* -------------------------------------------------------------------- */
+
+int pcmcia_on (void)
+{
+	u_long reg, base;
+	pcmcia_win_t *win;
+	u_int slotbit;
+	u_int rc, slot;
+	int i;
+
+	debug ("Enable PCMCIA " PCMCIA_SLOT_MSG "\n");
+
+	/* intialize the fixed memory windows */
+	win = (pcmcia_win_t *)(&((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_pbr0);
+	base = CFG_PCMCIA_MEM_ADDR;
+
+	if((reg = m8xx_get_graycode(CFG_PCMCIA_MEM_SIZE)) == -1) {
+		printf ("Cannot set window size to 0x%08x\n",
+			CFG_PCMCIA_MEM_SIZE);
+		return (1);
+	}
+
+	slotbit = PCMCIA_SLOT_x;
+	for (i=0; i<PCMCIA_MEM_WIN_NO; ++i) {
+		win->br = base;
+
+#if	(PCMCIA_SOCKETS_NO == 2)
+		if (i == 4) /* Another slot starting from win 4 */
+			slotbit = (slotbit ? PCMCIA_PSLOT_A : PCMCIA_PSLOT_B);
+#endif
+		switch (i) {
+#ifdef	CONFIG_IDE_8xx_PCCARD
+		case 4:
+#ifdef	CONFIG_HMI10
+		{	/* map FRAM area */
+			win->or = (	PCMCIA_BSIZE_256K
+				|	PCMCIA_PPS_8
+				|	PCMCIA_PRS_ATTR
+				|	slotbit
+				|	PCMCIA_PV
+				|	HMI10_FRAM_TIMING );
+			break;
+		}
+#endif
+		case 0:	{	/* map attribute memory */
+			win->or = (	PCMCIA_BSIZE_64M
+				|	PCMCIA_PPS_8
+				|	PCMCIA_PRS_ATTR
+				|	slotbit
+				|	PCMCIA_PV
+				|	CFG_PCMCIA_TIMING );
+			break;
+		}
+		case 5:
+		case 1: {	/* map I/O window for data reg */
+			win->or = (	PCMCIA_BSIZE_1K
+				|	PCMCIA_PPS_16
+				|	PCMCIA_PRS_IO
+				|	slotbit
+				|	PCMCIA_PV
+				|	CFG_PCMCIA_TIMING );
+			break;
+		}
+		case 6:
+		case 2: {	/* map I/O window for cmd/ctrl reg block */
+			win->or = (	PCMCIA_BSIZE_1K
+				|	PCMCIA_PPS_8
+				|	PCMCIA_PRS_IO
+				|	slotbit
+				|	PCMCIA_PV
+				|	CFG_PCMCIA_TIMING );
+			break;
+		}
+#endif	/* CONFIG_IDE_8xx_PCCARD */
+#ifdef	CONFIG_HMI10
+		case 3: {	/* map I/O window for 4xUART data/ctrl */
+			win->br += 0x40000;
+			win->or = (	PCMCIA_BSIZE_256K
+				|	PCMCIA_PPS_8
+				|	PCMCIA_PRS_IO
+				|	slotbit
+				|	PCMCIA_PV
+				|	CFG_PCMCIA_TIMING );
+			break;
+		}
+#endif	/* CONFIG_HMI10 */
+		default:	/* set to not valid */
+			win->or = 0;
+			break;
+		}
+
+		debug ("MemWin %d: PBR 0x%08lX  POR %08lX\n",
+		       i, win->br, win->or);
+		base += CFG_PCMCIA_MEM_SIZE;
+		++win;
+	}
+
+	for (i=0, rc=0, slot=_slot_; i<PCMCIA_SOCKETS_NO; i++, slot = !slot) {
+		/* turn off voltage */
+		if ((rc = pcmcia_voltage_set(slot, 0, 0)))
+			continue;
+
+		/* Enable external hardware */
+		if ((rc = pcmcia_hardware_enable(slot)))
+			continue;
+
+#ifdef	CONFIG_IDE_8xx_PCCARD
+		if ((rc = check_ide_device(i)))
+			continue;
+#endif
+	}
+	return rc;
+}
+
+#if	(CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+int pcmcia_off (void)
+{
+	int i;
+	pcmcia_win_t *win;
+
+	printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n");
+
+	/* clear interrupt state, and disable interrupts */
+	((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_pscr =  PCMCIA_MASK(_slot_);
+	((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_per &= ~PCMCIA_MASK(_slot_);
+
+	/* turn off interrupt and disable CxOE */
+	PCMCIA_PGCRX(_slot_) = __MY_PCMCIA_GCRX_CXOE;
+
+	/* turn off memory windows */
+	win = (pcmcia_win_t *)(&((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_pbr0);
+
+	for (i=0; i<PCMCIA_MEM_WIN_NO; ++i) {
+		/* disable memory window */
+		win->or = 0;
+		++win;
+	}
+
+	/* turn off voltage */
+	pcmcia_voltage_set(_slot_, 0, 0);
+
+	/* disable external hardware */
+	printf ("Shutdown and Poweroff " PCMCIA_SLOT_MSG "\n");
+	pcmcia_hardware_disable(_slot_);
+	return 0;
+}
+#endif	/* CFG_CMD_PCMCIA */
+
+
+static u_int m8xx_get_graycode(u_int size)
+{
+	u_int k;
+
+	for (k = 0; k < M8XX_SIZES_NO; k++) {
+		if(m8xx_size_to_gray[k] == size)
+			break;
+	}
+
+	if((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
+		k = -1;
+
+	return k;
+}
+
+#if	0
+
+#if	defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
+
+/* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
+ * SYPCR is write once only, therefore must the slowest memory be faster
+ * than the bus monitor or we will get a machine check due to the bus timeout.
+ */
+#undef	PCMCIA_BMT_LIMIT
+#define	PCMCIA_BMT_LIMIT (6*8)
+#endif
+
+static u_int m8xx_get_speed(u_int ns, u_int is_io)
+{
+	u_int reg, clocks, psst, psl, psht;
+
+	if(!ns) {
+
+		/*
+		* We get called with IO maps setup to 0ns
+		* if not specified by the user.
+		* They should be 255ns.
+		*/
+
+		if(is_io)
+			ns = 255;
+		else
+			ns = 100;  /* fast memory if 0 */
+	}
+
+	/*
+	* In PSST, PSL, PSHT fields we tell the controller
+	* timing parameters in CLKOUT clock cycles.
+	* CLKOUT is the same as GCLK2_50.
+	*/
+
+	/* how we want to adjust the timing - in percent */
+
+#define ADJ 180 /* 80 % longer accesstime - to be sure */
+
+	clocks = ((M8XX_BUSFREQ / 1000) * ns) / 1000;
+	clocks = (clocks * ADJ) / (100*1000);
+
+	if(clocks >= PCMCIA_BMT_LIMIT) {
+		DEBUG(0, "Max access time limit reached\n");
+		clocks = PCMCIA_BMT_LIMIT-1;
+	}
+
+	psst = clocks / 7;          /* setup time */
+	psht = clocks / 7;          /* hold time */
+	psl  = (clocks * 5) / 7;    /* strobe length */
+
+	psst += clocks - (psst + psht + psl);
+
+	reg =  psst << 12;
+	reg |= psl  << 7;
+	reg |= psht << 16;
+
+	return reg;
+}
+#endif	/* 0 */
+
+#endif	/* CONFIG_8xx && CONFIG_PCMCIA */