mirror of
https://github.com/AsahiLinux/u-boot
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94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
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#include <common.h>
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#include <mpc8xx.h>
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#include <pcmcia.h>
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#undef CONFIG_PCMCIA
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#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
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#define CONFIG_PCMCIA
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#endif
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#if (CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
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#define CONFIG_PCMCIA
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#endif
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#ifdef CONFIG_PCMCIA
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#define PCMCIA_BOARD_MSG "GTH COMPACT FLASH"
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int pcmcia_voltage_set (int slot, int vcc, int vpp)
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{ /* Do nothing */
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return 0;
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}
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int pcmcia_hardware_enable (int slot)
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{
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volatile immap_t *immap;
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volatile cpm8xx_t *cp;
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volatile pcmconf8xx_t *pcmp;
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volatile sysconf8xx_t *sysp;
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uint reg, mask;
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debug ("hardware_enable: GTH Slot %c\n", 'A' + slot);
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immap = (immap_t *) CFG_IMMR;
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sysp = (sysconf8xx_t *) (&(((immap_t *) CFG_IMMR)->im_siu_conf));
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pcmp = (pcmconf8xx_t *) (&(((immap_t *) CFG_IMMR)->im_pcmcia));
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cp = (cpm8xx_t *) (&(((immap_t *) CFG_IMMR)->im_cpm));
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/* clear interrupt state, and disable interrupts */
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pcmp->pcmc_pscr = PCMCIA_MASK (_slot_);
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pcmp->pcmc_per &= ~PCMCIA_MASK (_slot_);
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/*
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* Disable interrupts, DMA, and PCMCIA buffers
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* (isolate the interface) and assert RESET signal
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*/
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debug ("Disable PCMCIA buffers and assert RESET\n");
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reg = 0;
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reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
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reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
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PCMCIA_PGCRX (_slot_) = reg;
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udelay (500);
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/*
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* Make sure there is a card in the slot,
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* then configure the interface.
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*/
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udelay (10000);
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debug ("[%d] %s: PIPR(%p)=0x%x\n",
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__LINE__, __FUNCTION__,
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&(pcmp->pcmc_pipr), pcmp->pcmc_pipr);
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if (pcmp->pcmc_pipr & 0x98000000) {
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printf (" No Card found\n");
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return (1);
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}
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mask = PCMCIA_VS1 (slot) | PCMCIA_VS2 (slot);
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reg = pcmp->pcmc_pipr;
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debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
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reg,
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(reg & PCMCIA_VS1 (slot)) ? "n" : "ff",
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(reg & PCMCIA_VS2 (slot)) ? "n" : "ff");
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debug ("Enable PCMCIA buffers and stop RESET\n");
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reg = PCMCIA_PGCRX (_slot_);
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reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
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reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
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PCMCIA_PGCRX (_slot_) = reg;
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udelay (250000); /* some cards need >150 ms to come up :-( */
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debug ("# hardware_enable done\n");
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return 0;
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}
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#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
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int pcmcia_hardware_disable(int slot)
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{
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return 0; /* No hardware to disable */
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}
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#endif
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#endif /* CONFIG_PCMCIA */
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