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ast2400: pretend DMAs are done for U-boot 

U-boot does SPI timing calibration using DMA tranfers. To let the
initialization continue, we fake success by setting the DMA status of
the Interrupt Control Register.

For the moment, DMA support is not required as it is not used in
normal operation.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1467994016-11678-4-git-send-email-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2016-07-14 16:51:38 +01:00 committed by Peter Maydell
parent 97c2ed5dbd
commit 2e1f05020b
1 changed files with 4 additions and 0 deletions
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4
hw/ssi/aspeed_smc.c
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@ -273,6 +273,9 @@ static void aspeed_smc_reset(DeviceState *d)
memset(s->regs, 0, sizeof s->regs);
/* Pretend DMA is done (u-boot initialization) */
s->regs[R_INTR_CTRL] = INTR_CTRL_DMA_STATUS;
/* Unselect all slaves */
for (i = 0; i < s->num_cs; ++i) {
s->regs[s->r_ctrl0 + i] |= CTRL_CE_STOP_ACTIVE;
@ -297,6 +300,7 @@ static uint64_t aspeed_smc_read(void *opaque, hwaddr addr, unsigned int size)
if (addr == s->r_conf ||
addr == s->r_timings ||
addr == s->r_ce_ctrl ||
addr == R_INTR_CTRL ||
(addr >= s->r_ctrl0 && addr < s->r_ctrl0 + s->num_cs)) {
return s->regs[addr];
} else {