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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>
This commit is contained in:
Peng Fan 2020-05-03 21:58:52 +08:00 committed by Stefano Babic
parent adb3bd7654
commit 177f9996d3
1 changed files with 19 additions and 0 deletions
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19
drivers/cpu/imx8_cpu.c
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@ -20,6 +20,7 @@ struct cpu_imx_platdata {
const char *type; const char *type;
u32 cpurev; u32 cpurev;
u32 freq_mhz; u32 freq_mhz;
u32 mpidr;
}; };
const char *get_imx8_type(u32 imxtype) 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; 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 = { static const struct cpu_ops cpu_imx8_ops = {
.get_desc = cpu_imx_get_desc, .get_desc = cpu_imx_get_desc,
.get_info = cpu_imx_get_info, .get_info = cpu_imx_get_info,
.get_count = cpu_imx_get_count, .get_count = cpu_imx_get_count,
.get_vendor = cpu_imx_get_vendor, .get_vendor = cpu_imx_get_vendor,
.is_current = cpu_imx_is_current,
}; };
static const struct udevice_id cpu_imx8_ids[] = { static const struct udevice_id cpu_imx8_ids[] = {
{ .compatible = "arm,cortex-a35" }, { .compatible = "arm,cortex-a35" },
{ .compatible = "arm,cortex-a53" }, { .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->rev = get_imx8_rev(cpurev & 0xFFF);
plat->type = get_imx8_type((cpurev & 0xFF000) >> 12); plat->type = get_imx8_type((cpurev & 0xFF000) >> 12);
plat->freq_mhz = imx8_get_cpu_rate() / 1000000; 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; return 0;
} }