--- /dev/null
+#include <common.h>
+#include <mpc8xx.h>
+#include <pcmcia.h>
+
+#undef CONFIG_PCMCIA
+
+#if defined(CONFIG_CMD_PCMCIA)
+#define CONFIG_PCMCIA
+#endif
+
+#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
+#define CONFIG_PCMCIA
+#endif
+
+#ifdef CONFIG_PCMCIA
+
+#define PCMCIA_BOARD_MSG "KUP"
+
+#define KUP4K_PCMCIA_B_3V3 (0x00020000)
+
+int pcmcia_hardware_enable(int slot)
+{
+ 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);
+
+ sysp = (sysconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_siu_conf));
+ pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
+ cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_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, 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(2500);
+
+ /*
+ * Configure Port B pins for
+ * 3 Volts enable
+ */
+ if (slot) { /* Slot A is built-in */
+ 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 & (0x18000000 >> (slot << 4))) {
+ printf (" No Card found\n");
+ return (1);
+ }
+
+ /*
+ * Power On.
+ */
+ printf("%s Slot %c:", slot ? "" : "\n", 'A' + slot);
+ 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 {
+ if(slot)
+ 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 defined(CONFIG_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 *)CONFIG_SYS_IMMR;
+ pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
+ cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));
+
+ /* remove all power */
+ if (slot)
+ cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3;
+
+ /* 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;
+
+ udelay(10000);
+
+ return (0);
+}
+#endif
+
+
+int pcmcia_voltage_set(int slot, int vcc, int vpp)
+{
+ 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);
+
+ if (!slot) /* Slot A is not configurable */
+ return 0;
+
+ pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
+ cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_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;
+ }
+ udelay(10000);
+ /* Checking supported voltages */
+
+ debug ("PIPR: 0x%x --> %s\n",
+ pcmp->pcmc_pipr,
+ (pcmp->pcmc_pipr & (0x80000000 >> (slot << 4)))
+ ? "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 /* CONFIG_PCMCIA */
Code Review / kvmfornfv.git / blobdiff