cpu: imx8: support a72 as boot cpu

Support booting i.MX8QM with A72 as boot cpu

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c
index 7c54c290b881b09eb0273157ca80ddfa907577c6..c4679e1642cf4cd70d5f0053b5e53316489e0707 100644 (file)
--- a/drivers/cpu/imx8_cpu.c
+++ b/drivers/cpu/imx8_cpu.c
@@ -20,6 +20,7 @@ struct cpu_imx_platdata {
        const char *type;
        u32 cpurev;
        u32 freq_mhz;
+       u32 mpidr;
 };
 
 const char *get_imx8_type(u32 imxtype)
@@ -144,16 +145,28 @@ static int cpu_imx_get_vendor(struct udevice *dev,  char *buf, int size)
        return 0;
 }
 
+static int cpu_imx_is_current(struct udevice *dev)
+{
+       struct cpu_imx_platdata *plat = dev_get_platdata(dev);
+
+       if (plat->mpidr == (read_mpidr() & 0xffff))
+               return 1;
+
+       return 0;
+}
+
 static const struct cpu_ops cpu_imx8_ops = {
        .get_desc       = cpu_imx_get_desc,
        .get_info       = cpu_imx_get_info,
        .get_count      = cpu_imx_get_count,
        .get_vendor     = cpu_imx_get_vendor,
+       .is_current     = cpu_imx_is_current,
 };
 
 static const struct udevice_id cpu_imx8_ids[] = {
        { .compatible = "arm,cortex-a35" },
        { .compatible = "arm,cortex-a53" },
+       { .compatible = "arm,cortex-a72" },
        { }
 };
 
@@ -185,6 +198,12 @@ static int imx8_cpu_probe(struct udevice *dev)
        plat->rev = get_imx8_rev(cpurev & 0xFFF);
        plat->type = get_imx8_type((cpurev & 0xFF000) >> 12);
        plat->freq_mhz = imx8_get_cpu_rate() / 1000000;
+       plat->mpidr = dev_read_addr(dev);
+       if (plat->mpidr == FDT_ADDR_T_NONE) {
+               printf("%s: Failed to get CPU reg property\n", __func__);
+               return -EINVAL;
+       }
+
        return 0;
 }