Commit 2e1f0502 authored by Cédric Le Goater's avatar Cédric Le Goater Committed by Peter Maydell
Browse files

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: default avatarCédric Le Goater <clg@kaod.org>
Message-id: 1467994016-11678-4-git-send-email-clg@kaod.org
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 97c2ed5d

hw/ssi/aspeed_smc.c

+4 −0
Original line number Diff line number Diff line
@@ -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 {