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-rw-r--r--board/netta/pcmcia.c370
1 files changed, 370 insertions, 0 deletions
diff --git a/board/netta/pcmcia.c b/board/netta/pcmcia.c
new file mode 100644
index 0000000000..a3709f7f77
--- /dev/null
+++ b/board/netta/pcmcia.c
@@ -0,0 +1,370 @@
+#include <common.h>
+#include <mpc8xx.h>
+#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
+
+#ifdef CONFIG_PCMCIA
+
+/* some sane bit macros */
+#define _BD(_b) (1U << (31-(_b)))
+#define _BDR(_l, _h) (((((1U << (31-(_l))) - 1) << 1) | 1) & ~((1U << (31-(_h))) - 1))
+
+#define _BW(_b) (1U << (15-(_b)))
+#define _BWR(_l, _h) (((((1U << (15-(_l))) - 1) << 1) | 1) & ~((1U << (15-(_h))) - 1))
+
+#define _BB(_b) (1U << (7-(_b)))
+#define _BBR(_l, _h) (((((1U << (7-(_l))) - 1) << 1) | 1) & ~((1U << (7-(_h))) - 1))
+
+#define _B(_b) _BD(_b)
+#define _BR(_l, _h) _BDR(_l, _h)
+
+#define PCMCIA_BOARD_MSG "NETTA"
+
+static const unsigned short vppd_masks[2] = { _BW(14), _BW(15) };
+
+static void cfg_vppd(int no)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask;
+
+ if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
+ return;
+
+ mask = vppd_masks[no];
+
+ immap->im_ioport.iop_papar &= ~mask;
+ immap->im_ioport.iop_paodr &= ~mask;
+ immap->im_ioport.iop_padir |= mask;
+}
+
+static void set_vppd(int no, int what)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask;
+
+ if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
+ return;
+
+ mask = vppd_masks[no];
+
+ if (what)
+ immap->im_ioport.iop_padat |= mask;
+ else
+ immap->im_ioport.iop_padat &= ~mask;
+}
+
+static const unsigned short vccd_masks[2] = { _BW(10), _BW(6) };
+
+static void cfg_vccd(int no)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask;
+
+ if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
+ return;
+
+ mask = vccd_masks[no];
+
+ immap->im_ioport.iop_papar &= ~mask;
+ immap->im_ioport.iop_paodr &= ~mask;
+ immap->im_ioport.iop_padir |= mask;
+}
+
+static void set_vccd(int no, int what)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask;
+
+ if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
+ return;
+
+ mask = vccd_masks[no];
+
+ if (what)
+ immap->im_ioport.iop_padat |= mask;
+ else
+ immap->im_ioport.iop_padat &= ~mask;
+}
+
+static const unsigned short oc_mask = _BW(8);
+
+static void cfg_oc(void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask = oc_mask;
+
+ immap->im_ioport.iop_pcdir &= ~mask;
+ immap->im_ioport.iop_pcso &= ~mask;
+ immap->im_ioport.iop_pcint &= ~mask;
+ immap->im_ioport.iop_pcpar &= ~mask;
+}
+
+static int get_oc(void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask = oc_mask;
+ int what;
+
+ what = !!(immap->im_ioport.iop_pcdat & mask);;
+ return what;
+}
+
+static const unsigned short shdn_mask = _BW(12);
+
+static void cfg_shdn(void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask;
+
+ mask = shdn_mask;
+
+ immap->im_ioport.iop_papar &= ~mask;
+ immap->im_ioport.iop_paodr &= ~mask;
+ immap->im_ioport.iop_padir |= mask;
+}
+
+static void set_shdn(int what)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ unsigned short mask;
+
+ mask = shdn_mask;
+
+ if (what)
+ immap->im_ioport.iop_padat |= mask;
+ else
+ immap->im_ioport.iop_padat &= ~mask;
+}
+
+static void cfg_ports (void)
+{
+ volatile immap_t *immap;
+ volatile cpm8xx_t *cp;
+
+ immap = (immap_t *)CFG_IMMR;
+ cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+
+
+ cfg_vppd(0); cfg_vppd(1); /* VPPD0,VPPD1 VAVPP => Hi-Z */
+ cfg_vccd(0); cfg_vccd(1); /* 3V and 5V off */
+ cfg_shdn();
+ cfg_oc();
+
+ /*
+ * Configure Port A for TPS2211 PC-Card Power-Interface Switch
+ *
+ * Switch off all voltages, assert shutdown
+ */
+ set_vppd(0, 1); set_vppd(1, 1);
+ set_vccd(0, 0); set_vccd(1, 0);
+ set_shdn(1);
+
+ udelay(100000);
+}
+
+int pcmcia_hardware_enable(int slot)
+{
+ volatile immap_t *immap;
+ volatile cpm8xx_t *cp;
+ volatile pcmconf8xx_t *pcmp;
+ volatile sysconf8xx_t *sysp;
+ uint reg, pipr, mask;
+ int i;
+
+ 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 Ports for TPS2211A PC-Card Power-Interface Switch */
+ cfg_ports ();
+
+ /* clear interrupt state, and disable interrupts */
+ pcmp->pcmc_pscr = PCMCIA_MASK(_slot_);
+ pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
+
+ /*
+ * Disable interrupts, DMA, and PCMCIA buffers
+ * (isolate the interface) and assert RESET signal
+ */
+ debug ("Disable PCMCIA buffers and assert RESET\n");
+ reg = 0;
+ reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
+ PCMCIA_PGCRX(_slot_) = reg;
+
+ udelay(500);
+
+ /*
+ * 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 & (0x18000000 >> (slot << 4))) {
+ printf (" No Card found\n");
+ return (1);
+ }
+
+ /*
+ * Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
+ */
+ mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
+ pipr = pcmp->pcmc_pipr;
+ debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
+ pipr,
+ (reg&PCMCIA_VS1(slot))?"n":"ff",
+ (reg&PCMCIA_VS2(slot))?"n":"ff");
+
+ if ((pipr & mask) == mask) {
+ set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
+ set_vccd(0, 0); set_vccd(1, 1); /* 5V on, 3V off */
+ puts (" 5.0V card found: ");
+ } else {
+ set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
+ set_vccd(0, 1); set_vccd(1, 0); /* 5V off, 3V on */
+ puts (" 3.3V card found: ");
+ }
+
+ /* Wait 500 ms; use this to check for over-current */
+ for (i=0; i<5000; ++i) {
+ if (!get_oc()) {
+ printf (" *** Overcurrent - Safety shutdown ***\n");
+ set_vccd(0, 0); set_vccd(1, 0); /* VAVPP => Hi-Z */
+ return (1);
+ }
+ udelay (100);
+ }
+
+ 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)
+int pcmcia_hardware_disable(int slot)
+{
+ volatile immap_t *immap;
+ 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));
+
+ /* Configure PCMCIA General Control Register */
+ debug ("Disable PCMCIA buffers and assert RESET\n");
+ reg = 0;
+ reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
+ PCMCIA_PGCRX(_slot_) = reg;
+
+ /* All voltages off / Hi-Z */
+ set_vppd(0, 1); set_vppd(1, 1);
+ set_vccd(0, 1); set_vccd(1, 1);
+
+ udelay(10000);
+
+ return (0);
+}
+#endif /* CFG_CMD_PCMCIA */
+
+
+int pcmcia_voltage_set(int slot, int vcc, int vpp)
+{
+ volatile immap_t *immap;
+ volatile cpm8xx_t *cp;
+ volatile pcmconf8xx_t *pcmp;
+ u_long reg;
+ ushort sreg;
+
+ 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;
+ cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+ pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+ /*
+ * 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 C pins for
+ * 5 Volts Enable and 3 Volts enable,
+ * Turn all power pins to Hi-Z
+ */
+ debug ("PCMCIA power OFF\n");
+ cfg_ports (); /* Enables switch, but all in Hi-Z */
+
+ sreg = immap->im_ioport.iop_pcdat;
+ set_vppd(0, 1); set_vppd(1, 1);
+
+ switch(vcc) {
+ case 0:
+ break; /* Switch off */
+
+ case 33:
+ set_vccd(0, 1); set_vccd(1, 0);
+ break;
+
+ case 50:
+ set_vccd(0, 0); set_vccd(1, 1);
+ break;
+
+ default:
+ goto done;
+ }
+
+ /* Checking supported voltages */
+
+ debug ("PIPR: 0x%x --> %s\n",
+ pcmp->pcmc_pipr,
+ (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
+
+done:
+ 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 /* CONFIG_PCMCIA */
generated by cgit (git 2.34.1) at 2024-12-24 05:54:34 +0000