From patchwork Fri May 1 13:44:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 244733 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Fri, 1 May 2020 21:44:15 +0800 Subject: [PATCH V2 6/9] cpu: imx8: support a72 as boot cpu In-Reply-To: <20200501134418.7319-1-peng.fan@nxp.com> References: <20200501134418.7319-1-peng.fan@nxp.com> Message-ID: <20200501134418.7319-6-peng.fan@nxp.com> Support booting i.MX8QM with A72 as boot cpu Reviewed-by: Simon Glass Signed-off-by: Peng Fan --- V2: Add R-b tag drivers/cpu/imx8_cpu.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c index 7c54c290b8..d1bd4edfc7 100644 --- 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; }