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hw/pl181: Implement GPIO output pins for card status

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Add two GPIO output pins to the PL181 model to indicate the card
present and readonly status information. On ARM boards these usually
are reflected in a system register.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Peter Maydell 2011-02-21 20:57:49 +00:00 committed by Aurelien Jarno
parent 444dd39b5f
commit c31a4724e2
1 changed files with 6 additions and 0 deletions
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6
hw/pl181.c
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@ -47,6 +47,8 @@ typedef struct {
int linux_hack;
uint32_t fifo[PL181_FIFO_LEN];
qemu_irq irq[2];
/* GPIO outputs for 'card is readonly' and 'card inserted' */
qemu_irq cardstatus[2];
} pl181_state;
#define PL181_CMD_INDEX 0x3f
@ -444,6 +446,9 @@ static void pl181_reset(void *opaque)
s->linux_hack = 0;
s->mask[0] = 0;
s->mask[1] = 0;
/* We can assume our GPIO outputs have been wired up now */
sd_set_cb(s->card, s->cardstatus[0], s->cardstatus[1]);
}
static int pl181_init(SysBusDevice *dev)
@ -457,6 +462,7 @@ static int pl181_init(SysBusDevice *dev)
sysbus_init_mmio(dev, 0x1000, iomemtype);
sysbus_init_irq(dev, &s->irq[0]);
sysbus_init_irq(dev, &s->irq[1]);
qdev_init_gpio_out(&s->busdev.qdev, s->cardstatus, 2);
dinfo = drive_get_next(IF_SD);
s->card = sd_init(dinfo ? dinfo->bdrv : NULL, 0);
qemu_register_reset(pl181_reset, s);