From: Peng Fan <[email protected]> Add a new flag ATT_ECC which indicates the memory region needs ECC initialization. If the flag is set, clearing the whole memory region to initialize ECC. If ECC is not initialized, remote core will crash if directly access the area.
Signed-off-by: Peng Fan <[email protected]> --- drivers/remoteproc/imx_rproc.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 9bb55327998..9eecbe70f0b 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -46,6 +46,7 @@ struct imx_rproc { /* M4 own area. Can be mapped at probe */ #define ATT_OWN BIT(31) #define ATT_IOMEM BIT(30) +#define ATT_ECC BIT(29) static int imx_rproc_arm_smc_start(struct udevice *dev) { @@ -202,6 +203,26 @@ static void *imx_rproc_device_to_virt(struct udevice *dev, ulong da, ulong size, static int imx_rproc_load(struct udevice *dev, ulong addr, ulong size) { + struct imx_rproc *priv = dev_get_priv(dev); + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + int i; + + /* + * Before loading elf, need do ECC initialization by clearing the memory + * region, if ATT_ECC is set. + */ + for (i = 0; i < dcfg->att_size; i++) { + const struct imx_rproc_att *att = &dcfg->att[i]; + + if (!(att->flags & ATT_ECC)) + continue; + + if (att->flags & ATT_IOMEM) + memset_io((void __iomem *)(long)att->sa, 0, att->size); + else + memset((void *)(long)att->sa, 0, att->size); + } + return rproc_elf_load_image(dev, addr, size); } -- 2.51.0
