summaryrefslogtreecommitdiff
path: root/board/uc100/pcmcia.c
diff options
context:
space:
mode:
authorWolfgang Denk <wd@pollux.denx.de>2006-07-10 23:07:28 +0200
committerWolfgang Denk <wd@pollux.denx.de>2006-07-10 23:07:28 +0200
commit9d407995516bfcd401b76de0c11e679fb3871c79 (patch)
treedae126efb15ae0a160bd1b3f0b18ad2735c6c015 /board/uc100/pcmcia.c
parenta874c8c65f57ecfbb8c7961525ac4376b6fbab8b (diff)
downloadu-boot-imx-9d407995516bfcd401b76de0c11e679fb3871c79.zip
u-boot-imx-9d407995516bfcd401b76de0c11e679fb3871c79.tar.gz
u-boot-imx-9d407995516bfcd401b76de0c11e679fb3871c79.tar.bz2
Major PCMCIA Cleanup to make code better readable and maintainable.
Notes: - Board-dependend code for RPXLITE and RPXCLASSIC-based boards placed to the drivers/rpx_pmcia.c file to avoid duplication. Same for TQM8xx-based boards (drivers/tqm8xx_pmcia.c). - drivers/i82365.c has been split into two parts located at board/atc/ti113x.c and board/cpc45/pd67290.c (ATC and CPC45 are the only boards using CONFIG_82365). - Changes were tested for clean build and *very* *few* boards.
Diffstat (limited to 'board/uc100/pcmcia.c')
-rw-r--r--board/uc100/pcmcia.c198
1 files changed, 198 insertions, 0 deletions
diff --git a/board/uc100/pcmcia.c b/board/uc100/pcmcia.c
new file mode 100644
index 0000000..6e4b6d6
--- /dev/null
+++ b/board/uc100/pcmcia.c
@@ -0,0 +1,198 @@
+#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
+
+#define PCMCIA_BOARD_MSG "UC100"
+
+/*
+ * Remark: don't turn off OE "__MY_PCMCIA_GCRX_CXOE" on UC100 board.
+ * This leads to board-hangup! (sr, 8 Dez. 2004)
+ */
+static void cfg_ports (void)
+{
+ volatile immap_t *immap;
+
+ immap = (immap_t *)CFG_IMMR;
+
+ /*
+ * Configure Port A for MAX1602 PC-Card Power-Interface Switch
+ */
+ immap->im_ioport.iop_padat &= ~0x8000; /* set port x output to low */
+ immap->im_ioport.iop_padir |= 0x8000; /* enable port x as output */
+
+ debug ("Set Port A: PAR: %08x DIR: %08x DAT: %08x\n",
+ immap->im_ioport.iop_papar, immap->im_ioport.iop_padir,
+ immap->im_ioport.iop_padat);
+}
+
+int pcmcia_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 Ports for TPS2211A PC-Card Power-Interface Switch */
+ cfg_ports ();
+
+ /*
+ * 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, 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 */
+ 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.
+ */
+ 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: ");
+ } else {
+ puts (" 3.3V card found: ");
+ }
+
+ /* switch VCC on */
+ immap->im_ioport.iop_padat |= 0x8000; /* power enable 3.3V */
+
+ udelay(10000);
+
+ 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 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));
+
+ /* switch VCC off */
+ immap->im_ioport.iop_padat &= ~0x8000; /* power disable 3.3V */
+
+ /* Configure PCMCIA General Control Register */
+ debug ("Disable PCMCIA buffers and assert RESET\n");
+ reg = 0;
+ reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
+ PCMCIA_PGCRX(_slot_) = reg;
+
+ udelay(10000);
+
+ return (0);
+}
+#endif /* CFG_CMD_PCMCIA */
+
+
+int pcmcia_voltage_set(int slot, int vcc, int vpp)
+{
+ volatile immap_t *immap;
+ 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));
+ /*
+ * 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 */
+ 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 */
+
+ 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 */