diff options
Diffstat (limited to 'board/gth/pcmcia.c')
| -rw-r--r-- | board/gth/pcmcia.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/board/gth/pcmcia.c b/board/gth/pcmcia.c new file mode 100644 index 0000000000..fce5492635 --- /dev/null +++ b/board/gth/pcmcia.c @@ -0,0 +1,93 @@ +#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 "GTH COMPACT FLASH" + +int pcmcia_voltage_set (int slot, int vcc, int vpp) +{ /* Do nothing */ + return 0; +} + +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: GTH Slot %c\n", 'A' + slot); + + 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)); + + /* 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 & 0x98000000) { + printf (" No Card found\n"); + return (1); + } + + 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"); + + 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) +{ + return 0; /* No hardware to disable */ +} +#endif + +#endif /* CONFIG_PCMCIA */ |