diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/pcmcia/tqm8xx_pcmcia.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/pcmcia/tqm8xx_pcmcia.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/drivers/pcmcia/tqm8xx_pcmcia.c b/qemu/roms/u-boot/drivers/pcmcia/tqm8xx_pcmcia.c new file mode 100644 index 000000000..dda7d3744 --- /dev/null +++ b/qemu/roms/u-boot/drivers/pcmcia/tqm8xx_pcmcia.c @@ -0,0 +1,305 @@ +/* -------------------------------------------------------------------- */ +/* TQM8xxL Boards by TQ Components */ +/* SC8xx Boards by SinoVee Microsystems */ +/* -------------------------------------------------------------------- */ +#include <common.h> +#include <asm/io.h> +#ifdef CONFIG_8xx +#include <mpc8xx.h> +#endif +#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 + +#if defined(CONFIG_PCMCIA) \ + && (defined(CONFIG_TQM8xxL) || defined(CONFIG_SVM_SC8xx)) + +#if defined(CONFIG_VIRTLAB2) +#define PCMCIA_BOARD_MSG "Virtlab2" +#elif defined(CONFIG_TQM8xxL) +#define PCMCIA_BOARD_MSG "TQM8xxL" +#elif defined(CONFIG_SVM_SC8xx) +#define PCMCIA_BOARD_MSG "SC8xx" +#endif + +#if defined(CONFIG_NSCU) + +static inline void power_config(int slot) {} +static inline void power_off(int slot) {} +static inline void power_on_5_0(int slot) {} +static inline void power_on_3_3(int slot) {} + +#elif defined(CONFIG_VIRTLAB2) + +static inline void power_config(int slot) {} + +static inline void power_off(int slot) +{ + volatile unsigned __iomem *addr; + addr = (volatile unsigned __iomem *)PCMCIA_CTRL; + + out_be32(addr, 0); +} + +static inline void power_on_5_0(int slot) +{ + volatile unsigned __iomem *addr; + addr = (volatile unsigned __iomem *)PCMCIA_CTRL; + + /* Enable 5V Vccout */ + out_be32(addr, 2); +} + +static inline void power_on_3_3(int slot) +{ + volatile unsigned __iomem *addr; + addr = (volatile unsigned __iomem *)PCMCIA_CTRL; + + /* Enable 3.3V Vccout */ + out_be32(addr, 1); +} + +#else + +static inline void power_config(int slot) +{ + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + /* + * Configure Port C pins for + * 5 Volts Enable and 3 Volts enable + */ + clrbits_be16(&immap->im_ioport.iop_pcpar, 0x0002 | 0x0004); + clrbits_be16(&immap->im_ioport.iop_pcso, 0x0002 | 0x0004); +} + +static inline void power_off(int slot) +{ + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + clrbits_be16(&immap->im_ioport.iop_pcdat, 0x0002 | 0x0004); +} + +static inline void power_on_5_0(int slot) +{ + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + setbits_be16(&immap->im_ioport.iop_pcdat, 0x0004); + setbits_be16(&immap->im_ioport.iop_pcdir, 0x0002 | 0x0004); +} + +static inline void power_on_3_3(int slot) +{ + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + setbits_be16(&immap->im_ioport.iop_pcdat, 0x0002); + setbits_be16(&immap->im_ioport.iop_pcdir, 0x0002 | 0x0004); +} + +#endif + +/* + * Function to retrieve the PIPR register, used for debuging purposes. + */ +static inline uint32_t debug_get_pipr(void) +{ + uint32_t pipr = 0; +#ifdef DEBUG + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + pipr = in_be32(&immap->im_pcmcia.pcmc_pipr); +#endif + return pipr; +} + + +static inline int check_card_is_absent(int slot) +{ + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + uint32_t pipr = in_be32(&immap->im_pcmcia.pcmc_pipr); + return pipr & (0x18000000 >> (slot << 4)); +} + +#ifdef NSCU_OE_INV +#define NSCU_GCRX_CXOE 0 +#else +#define NSCU_GCRX_CXOE __MY_PCMCIA_GCRX_CXOE +#endif + +int pcmcia_hardware_enable(int slot) +{ + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + uint reg, mask; + + debug("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); + + udelay(10000); + + /* + * Configure SIUMCR to enable PCMCIA port B + * (VFLS[0:1] are not used for debugging, we connect FRZ# instead) + */ + + /* Set DBGC to 00 */ + clrbits_be32(&immap->im_siu_conf.sc_siumcr, SIUMCR_DBGC11); + + /* Clear interrupt state, and disable interrupts */ + out_be32(&immap->im_pcmcia.pcmc_pscr, PCMCIA_MASK(slot)); + clrbits_be32(&immap->im_pcmcia.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 |= NSCU_GCRX_CXOE; + + PCMCIA_PGCRX(slot) = reg; + udelay(500); + + power_config(slot); + power_off(slot); + + /* + * Make sure there is a card in the slot, then configure the interface. + */ + udelay(10000); + reg = debug_get_pipr(); + debug("[%d] %s: PIPR(%p)=0x%x\n", __LINE__, __FUNCTION__, + &immap->im_pcmcia.pcmc_pipr, reg); + + if (check_card_is_absent(slot)) { + printf (" No Card found\n"); + return (1); + } + + /* + * Power On. + */ + mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot); + reg = in_be32(&immap->im_pcmcia.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) { + power_on_5_0(slot); + puts (" 5.0V card found: "); + } else { + power_on_3_3(slot); + 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 + + udelay(1000); + 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 */ + reg &= ~NSCU_GCRX_CXOE; + + 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) +{ + u_long reg; + + debug("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); + + /* remove all power */ + power_off(slot); + + debug("Disable PCMCIA buffers and assert RESET\n"); + reg = 0; + reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */ + reg |= NSCU_GCRX_CXOE; /* active low */ + + PCMCIA_PGCRX(slot) = reg; + + udelay(10000); + + return (0); +} +#endif + +int pcmcia_voltage_set(int slot, int vcc, int vpp) +{ +#ifndef CONFIG_NSCU + u_long reg; + uint32_t pipr = 0; + + 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); + + /* + * 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 */ + reg |= NSCU_GCRX_CXOE; /* active low */ + + PCMCIA_PGCRX(slot) = reg; + udelay(500); + + debug("PCMCIA power OFF\n"); + power_config(slot); + power_off(slot); + + switch(vcc) { + case 0: break; + case 33: power_on_3_3(slot); break; + case 50: power_on_5_0(slot); break; + default: goto done; + } + + /* Checking supported voltages */ + pipr = debug_get_pipr(); + debug("PIPR: 0x%x --> %s\n", pipr, + (pipr & 0x00008000) ? "only 5 V" : "can do 3.3V"); + + if (vcc) + debug("PCMCIA powered at %sV\n", (vcc == 50) ? "5.0" : "3.3"); + else + debug("PCMCIA powered down\n"); + +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 */ + reg &= ~NSCU_GCRX_CXOE; /* active low */ + + PCMCIA_PGCRX(slot) = reg; + udelay(500); + + debug("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n", slot+'A'); +#endif /* CONFIG_NSCU */ + return 0; +} + +#endif /* CONFIG_PCMCIA && (CONFIG_TQM8xxL || CONFIG_SVM_SC8xx) */ |