From patchwork Wed Apr 29 02:17:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 238779 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Wed, 29 Apr 2020 10:17:14 +0800 Subject: [PATCH 1/7] uclass: cpu: Add new API to get udevice for current CPU Message-ID: <20200429021720.6653-1-peng.fan@nxp.com> When running on SoC with multiple clusters, the boot CPU may not be fixed, saying booting from cluster A or cluster B. Add a API that can return the udevice for current boot CPU. Cpu driver needs to implement is_current_cpu interface for this feature, otherwise the API only returns the first udevice in cpu uclass. Signed-off-by: Peng Fan Signed-off-by: Ye Li --- drivers/cpu/cpu-uclass.c | 31 +++++++++++++++++++++++++++++++ include/cpu.h | 15 +++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/drivers/cpu/cpu-uclass.c b/drivers/cpu/cpu-uclass.c index 457f77b7c8..488b1f5050 100644 --- a/drivers/cpu/cpu-uclass.c +++ b/drivers/cpu/cpu-uclass.c @@ -10,6 +10,7 @@ #include #include #include +#include int cpu_probe_all(void) { @@ -34,6 +35,36 @@ int cpu_probe_all(void) return 0; } +struct udevice *cpu_get_current_dev(void) +{ + struct udevice *cpu; + struct uclass *uc; + struct cpu_ops *ops; + int ret; + + ret = uclass_get(UCLASS_CPU, &uc); + if (ret) + return ERR_PTR(ret); + + uclass_foreach_dev(cpu, uc) { + ops = cpu_get_ops(cpu); + if (ops->is_current_cpu) { + if (ops->is_current_cpu(cpu)) + return cpu; + } + } + + /* If can't find current cpu device, use the first dev instead */ + ret = uclass_first_device_err(UCLASS_CPU, &cpu); + if (ret) { + debug("%s: Could not get CPU device (err = %d)\n", + __func__, ret); + return NULL; + } + + return cpu; +} + int cpu_get_desc(struct udevice *dev, char *buf, int size) { struct cpu_ops *ops = cpu_get_ops(dev); diff --git a/include/cpu.h b/include/cpu.h index 6b1b6b37b3..7ffe412b18 100644 --- a/include/cpu.h +++ b/include/cpu.h @@ -89,6 +89,14 @@ struct cpu_ops { * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error */ int (*get_vendor)(struct udevice *dev, char *buf, int size); + + /** + * is_current_cpu() - Check if the device is for current CPU + * + * @dev: Device to check (UCLASS_CPU) + * @return true if the device is current CPU, false if the device is not. + */ + bool (*is_current_cpu)(struct udevice *dev); }; #define cpu_get_ops(dev) ((struct cpu_ops *)(dev)->driver->ops) @@ -137,4 +145,11 @@ int cpu_get_vendor(struct udevice *dev, char *buf, int size); */ int cpu_probe_all(void); +/** + * cpu_get_current_dev() - Get CPU udevice for current CPU + * + * Return: udevice if OK, - NULL on error + */ +struct udevice *cpu_get_current_dev(void); + #endif From patchwork Wed Apr 29 02:17:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 238780 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Wed, 29 Apr 2020 10:17:15 +0800 Subject: [PATCH 2/7] common: board_f: Use cpu_get_current_dev in print_cpuinfo In-Reply-To: <20200429021720.6653-1-peng.fan@nxp.com> References: <20200429021720.6653-1-peng.fan@nxp.com> Message-ID: <20200429021720.6653-2-peng.fan@nxp.com> From: Ye Li Current print_cpuinfo gets the first udevice in CPU class to return the cpu info. This has problem if the boot CPU is not fixed. Changing to use new API cpu_get_current_dev to fix the issue. Signed-off-by: Ye Li Signed-off-by: Peng Fan Reviewed-by: Simon Glass --- common/board_f.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/common/board_f.c b/common/board_f.c index 5c650f046c..5223453511 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -183,11 +183,11 @@ static int print_cpuinfo(void) char desc[512]; int ret; - ret = uclass_first_device_err(UCLASS_CPU, &dev); - if (ret) { - debug("%s: Could not get CPU device (err = %d)\n", - __func__, ret); - return ret; + dev = cpu_get_current_dev(); + if (!dev) { + debug("%s: Could not get CPU device\n", + __func__); + return -ENODEV; } ret = cpu_get_desc(dev, desc, sizeof(desc)); From patchwork Wed Apr 29 02:17:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 238781 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Wed, 29 Apr 2020 10:17:16 +0800 Subject: [PATCH 3/7] cpu: imx8: reimplement get cpu count In-Reply-To: <20200429021720.6653-1-peng.fan@nxp.com> References: <20200429021720.6653-1-peng.fan@nxp.com> Message-ID: <20200429021720.6653-3-peng.fan@nxp.com> Return 4 is not correct on i.MX8DX/DXL/8QM and etc. we need to count available cpu node with device_type "cpu". Signed-off-by: Peng Fan Reviewed-by: Simon Glass --- drivers/cpu/imx8_cpu.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c index 95653683ac..7c54c290b8 100644 --- a/drivers/cpu/imx8_cpu.c +++ b/drivers/cpu/imx8_cpu.c @@ -118,7 +118,24 @@ static int cpu_imx_get_info(struct udevice *dev, struct cpu_info *info) static int cpu_imx_get_count(struct udevice *dev) { - return 4; + ofnode node; + int num = 0; + + ofnode_for_each_subnode(node, dev_ofnode(dev->parent)) { + const char *device_type; + + if (!ofnode_is_available(node)) + continue; + + device_type = ofnode_read_string(node, "device_type"); + if (!device_type) + continue; + + if (!strcmp(device_type, "cpu")) + num++; + } + + return num; } static int cpu_imx_get_vendor(struct udevice *dev, char *buf, int size) From patchwork Wed Apr 29 02:17:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 238782 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Wed, 29 Apr 2020 10:17:17 +0800 Subject: [PATCH 4/7] cpu: imx8: support a72 as boot cpu In-Reply-To: <20200429021720.6653-1-peng.fan@nxp.com> References: <20200429021720.6653-1-peng.fan@nxp.com> Message-ID: <20200429021720.6653-4-peng.fan@nxp.com> Support booting i.MX8QM with A72 as boot cpu Signed-off-by: Peng Fan Reviewed-by: Simon Glass --- 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..029f20632e 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 bool cpu_imx_is_current(struct udevice *dev) +{ + struct cpu_imx_platdata *plat = dev_get_platdata(dev); + + if (plat->mpidr == (read_mpidr() & 0xffff)) + return true; + + return false; +} + 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 = 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; } From patchwork Wed Apr 29 02:17:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 238784 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Wed, 29 Apr 2020 10:17:18 +0800 Subject: [PATCH 5/7] cpu: imx8: fix get core name and rate In-Reply-To: <20200429021720.6653-1-peng.fan@nxp.com> References: <20200429021720.6653-1-peng.fan@nxp.com> Message-ID: <20200429021720.6653-5-peng.fan@nxp.com> When current cpu is A53, using is_cortex_a53 could not detect A72 information, so check cpu device compatible property to get the correct information. Signed-off-by: Peng Fan Reviewed-by: Simon Glass --- drivers/cpu/imx8_cpu.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c index 029f20632e..525c28bc4b 100644 --- a/drivers/cpu/imx8_cpu.c +++ b/drivers/cpu/imx8_cpu.c @@ -48,13 +48,13 @@ const char *get_imx8_rev(u32 rev) } } -const char *get_core_name(void) +const char *get_core_name(struct udevice *dev) { - if (is_cortex_a35()) + if (!device_is_compatible(dev, "arm,cortex-a35")) return "A35"; - else if (is_cortex_a53()) + else if (!device_is_compatible(dev, "arm,cortex-a53")) return "A53"; - else if (is_cortex_a72()) + else if (!device_is_compatible(dev, "arm,cortex-a72")) return "A72"; else return "?"; @@ -170,12 +170,19 @@ static const struct udevice_id cpu_imx8_ids[] = { { } }; -static ulong imx8_get_cpu_rate(void) +static ulong imx8_get_cpu_rate(struct udevice *dev) { ulong rate; - int ret; - int type = is_cortex_a35() ? SC_R_A35 : is_cortex_a53() ? - SC_R_A53 : SC_R_A72; + int ret, type; + + if (!device_is_compatible(dev, "arm,cortex-a35")) + type = SC_R_A35; + else if (!device_is_compatible(dev, "arm,cortex-a53")) + type = SC_R_A53; + else if (!device_is_compatible(dev, "arm,cortex-a72")) + type = SC_R_A72; + else + return 0; ret = sc_pm_get_clock_rate(-1, type, SC_PM_CLK_CPU, (sc_pm_clock_rate_t *)&rate); @@ -194,10 +201,10 @@ static int imx8_cpu_probe(struct udevice *dev) cpurev = get_cpu_rev(); plat->cpurev = cpurev; - plat->name = get_core_name(); + plat->name = get_core_name(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->freq_mhz = imx8_get_cpu_rate(dev) / 1000000; plat->mpidr = dev_read_addr(dev); if (plat->mpidr == FDT_ADDR_T_NONE) { printf("%s: Failed to get CPU reg property\n", __func__); From patchwork Wed Apr 29 02:17:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 238783 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Wed, 29 Apr 2020 10:17:19 +0800 Subject: [PATCH 6/7] cpu: imx_cpu: Print the CPU temperature for iMX8QM A72 In-Reply-To: <20200429021720.6653-1-peng.fan@nxp.com> References: <20200429021720.6653-1-peng.fan@nxp.com> Message-ID: <20200429021720.6653-6-peng.fan@nxp.com> From: Ye Li iMX8QM registers two thermal devices for CPUs, get the temperature from "cpu-thermal1" device for A72 Signed-off-by: Ye Li Signed-off-by: Peng Fan --- drivers/cpu/imx8_cpu.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c index 525c28bc4b..d99d9aacd9 100644 --- a/drivers/cpu/imx8_cpu.c +++ b/drivers/cpu/imx8_cpu.c @@ -61,13 +61,17 @@ const char *get_core_name(struct udevice *dev) } #if IS_ENABLED(CONFIG_IMX_SCU_THERMAL) -static int cpu_imx_get_temp(void) +static int cpu_imx_get_temp(struct cpu_imx_platdata *plat) { struct udevice *thermal_dev; int cpu_tmp, ret; - ret = uclass_get_device_by_name(UCLASS_THERMAL, "cpu-thermal0", - &thermal_dev); + if (!strcmp(plat->name, "A72")) + ret = uclass_get_device_by_name(UCLASS_THERMAL, "cpu-thermal1", + &thermal_dev); + else + ret = uclass_get_device_by_name(UCLASS_THERMAL, "cpu-thermal0", + &thermal_dev); if (!ret) { ret = thermal_get_temp(thermal_dev, &cpu_tmp); @@ -80,7 +84,7 @@ static int cpu_imx_get_temp(void) return cpu_tmp; } #else -static int cpu_imx_get_temp(void) +static int cpu_imx_get_temp(struct cpu_imx_platdata *plat) { return 0; } @@ -89,7 +93,7 @@ static int cpu_imx_get_temp(void) int cpu_imx_get_desc(struct udevice *dev, char *buf, int size) { struct cpu_imx_platdata *plat = dev_get_platdata(dev); - int ret; + int ret, temp; if (size < 100) return -ENOSPC; @@ -98,9 +102,13 @@ int cpu_imx_get_desc(struct udevice *dev, char *buf, int size) plat->type, plat->rev, plat->name, plat->freq_mhz); if (IS_ENABLED(CONFIG_IMX_SCU_THERMAL)) { + temp = cpu_imx_get_temp(plat); buf = buf + ret; size = size - ret; - ret = snprintf(buf, size, " at %dC", cpu_imx_get_temp()); + if (temp != 0xdeadbeef) + ret = snprintf(buf, size, " at %dC", temp); + else + ret = snprintf(buf, size, " - invalid sensor data"); } snprintf(buf + ret, size - ret, "\n"); From patchwork Wed Apr 29 02:17:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 238785 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Wed, 29 Apr 2020 10:17:20 +0800 Subject: [PATCH 7/7] cpu: imx8: show RevC instead of Rev? at boot log In-Reply-To: <20200429021720.6653-1-peng.fan@nxp.com> References: <20200429021720.6653-1-peng.fan@nxp.com> Message-ID: <20200429021720.6653-7-peng.fan@nxp.com> From: Frank Li Add REVC informaiton. Signed-off-by: Frank Li Signed-off-by: Peng Fan Reviewed-by: Simon Glass --- arch/arm/include/asm/arch-imx/cpu.h | 1 + drivers/cpu/imx8_cpu.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h index 5ade63665a..06b8122e7c 100644 --- a/arch/arm/include/asm/arch-imx/cpu.h +++ b/arch/arm/include/asm/arch-imx/cpu.h @@ -57,6 +57,7 @@ #define CHIP_REV_A 0x0 #define CHIP_REV_B 0x1 +#define CHIP_REV_C 0x2 #define BOARD_REV_1_0 0x0 #define BOARD_REV_2_0 0x1 diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c index d99d9aacd9..46472fdefb 100644 --- a/drivers/cpu/imx8_cpu.c +++ b/drivers/cpu/imx8_cpu.c @@ -43,6 +43,8 @@ const char *get_imx8_rev(u32 rev) return "A"; case CHIP_REV_B: return "B"; + case CHIP_REV_C: + return "C"; default: return "?"; }