| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Rohit Vaswani | 1090 | 84.50% | 3 | 18.75% |
| Jeffrey Ohlstein | 135 | 10.47% | 2 | 12.50% |
| Marc Zyngier | 25 | 1.94% | 1 | 6.25% |
| Kumar Gala | 23 | 1.78% | 3 | 18.75% |
| Masahiro Yamada | 6 | 0.47% | 1 | 6.25% |
| Thomas Gleixner | 2 | 0.16% | 1 | 6.25% |
| Stephen Boyd | 2 | 0.16% | 1 | 6.25% |
| Will Deacon | 2 | 0.16% | 1 | 6.25% |
| Russell King | 2 | 0.16% | 1 | 6.25% |
| Lina Iyer | 2 | 0.16% | 1 | 6.25% |
| Rob Herring | 1 | 0.08% | 1 | 6.25% |
| Total | 1290 | 16 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2002 ARM Ltd. * All Rights Reserved * Copyright (c) 2010, Code Aurora Forum. All rights reserved. * Copyright (c) 2014 The Linux Foundation. All rights reserved. */ #include <linux/init.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/smp.h> #include <linux/io.h> #include <linux/qcom_scm.h> #include <asm/smp_plat.h> #define VDD_SC1_ARRAY_CLAMP_GFS_CTL 0x35a0 #define SCSS_CPU1CORE_RESET 0x2d80 #define SCSS_DBG_STATUS_CORE_PWRDUP 0x2e64 #define APCS_CPU_PWR_CTL 0x04 #define PLL_CLAMP BIT(8) #define CORE_PWRD_UP BIT(7) #define COREPOR_RST BIT(5) #define CORE_RST BIT(4) #define L2DT_SLP BIT(3) #define CLAMP BIT(0) #define APC_PWR_GATE_CTL 0x14 #define BHS_CNT_SHIFT 24 #define LDO_PWR_DWN_SHIFT 16 #define LDO_BYP_SHIFT 8 #define BHS_SEG_SHIFT 1 #define BHS_EN BIT(0) #define APCS_SAW2_VCTL 0x14 #define APCS_SAW2_2_VCTL 0x1c extern void secondary_startup_arm(void); #ifdef CONFIG_HOTPLUG_CPU static void qcom_cpu_die(unsigned int cpu) { wfi(); } #endif static int scss_release_secondary(unsigned int cpu) { struct device_node *node; void __iomem *base; node = of_find_compatible_node(NULL, NULL, "qcom,gcc-msm8660"); if (!node) { pr_err("%s: can't find node\n", __func__); return -ENXIO; } base = of_iomap(node, 0); of_node_put(node); if (!base) return -ENOMEM; writel_relaxed(0, base + VDD_SC1_ARRAY_CLAMP_GFS_CTL); writel_relaxed(0, base + SCSS_CPU1CORE_RESET); writel_relaxed(3, base + SCSS_DBG_STATUS_CORE_PWRDUP); mb(); iounmap(base); return 0; } static int kpssv1_release_secondary(unsigned int cpu) { int ret = 0; void __iomem *reg, *saw_reg; struct device_node *cpu_node, *acc_node, *saw_node; u32 val; cpu_node = of_get_cpu_node(cpu, NULL); if (!cpu_node) return -ENODEV; acc_node = of_parse_phandle(cpu_node, "qcom,acc", 0); if (!acc_node) { ret = -ENODEV; goto out_acc; } saw_node = of_parse_phandle(cpu_node, "qcom,saw", 0); if (!saw_node) { ret = -ENODEV; goto out_saw; } reg = of_iomap(acc_node, 0); if (!reg) { ret = -ENOMEM; goto out_acc_map; } saw_reg = of_iomap(saw_node, 0); if (!saw_reg) { ret = -ENOMEM; goto out_saw_map; } /* Turn on CPU rail */ writel_relaxed(0xA4, saw_reg + APCS_SAW2_VCTL); mb(); udelay(512); /* Krait bring-up sequence */ val = PLL_CLAMP | L2DT_SLP | CLAMP; writel_relaxed(val, reg + APCS_CPU_PWR_CTL); val &= ~L2DT_SLP; writel_relaxed(val, reg + APCS_CPU_PWR_CTL); mb(); ndelay(300); val |= COREPOR_RST; writel_relaxed(val, reg + APCS_CPU_PWR_CTL); mb(); udelay(2); val &= ~CLAMP; writel_relaxed(val, reg + APCS_CPU_PWR_CTL); mb(); udelay(2); val &= ~COREPOR_RST; writel_relaxed(val, reg + APCS_CPU_PWR_CTL); mb(); udelay(100); val |= CORE_PWRD_UP; writel_relaxed(val, reg + APCS_CPU_PWR_CTL); mb(); iounmap(saw_reg); out_saw_map: iounmap(reg); out_acc_map: of_node_put(saw_node); out_saw: of_node_put(acc_node); out_acc: of_node_put(cpu_node); return ret; } static int kpssv2_release_secondary(unsigned int cpu) { void __iomem *reg; struct device_node *cpu_node, *l2_node, *acc_node, *saw_node; void __iomem *l2_saw_base; unsigned reg_val; int ret; cpu_node = of_get_cpu_node(cpu, NULL); if (!cpu_node) return -ENODEV; acc_node = of_parse_phandle(cpu_node, "qcom,acc", 0); if (!acc_node) { ret = -ENODEV; goto out_acc; } l2_node = of_parse_phandle(cpu_node, "next-level-cache", 0); if (!l2_node) { ret = -ENODEV; goto out_l2; } saw_node = of_parse_phandle(l2_node, "qcom,saw", 0); if (!saw_node) { ret = -ENODEV; goto out_saw; } reg = of_iomap(acc_node, 0); if (!reg) { ret = -ENOMEM; goto out_map; } l2_saw_base = of_iomap(saw_node, 0); if (!l2_saw_base) { ret = -ENOMEM; goto out_saw_map; } /* Turn on the BHS, turn off LDO Bypass and power down LDO */ reg_val = (64 << BHS_CNT_SHIFT) | (0x3f << LDO_PWR_DWN_SHIFT) | BHS_EN; writel_relaxed(reg_val, reg + APC_PWR_GATE_CTL); mb(); /* wait for the BHS to settle */ udelay(1); /* Turn on BHS segments */ reg_val |= 0x3f << BHS_SEG_SHIFT; writel_relaxed(reg_val, reg + APC_PWR_GATE_CTL); mb(); /* wait for the BHS to settle */ udelay(1); /* Finally turn on the bypass so that BHS supplies power */ reg_val |= 0x3f << LDO_BYP_SHIFT; writel_relaxed(reg_val, reg + APC_PWR_GATE_CTL); /* enable max phases */ writel_relaxed(0x10003, l2_saw_base + APCS_SAW2_2_VCTL); mb(); udelay(50); reg_val = COREPOR_RST | CLAMP; writel_relaxed(reg_val, reg + APCS_CPU_PWR_CTL); mb(); udelay(2); reg_val &= ~CLAMP; writel_relaxed(reg_val, reg + APCS_CPU_PWR_CTL); mb(); udelay(2); reg_val &= ~COREPOR_RST; writel_relaxed(reg_val, reg + APCS_CPU_PWR_CTL); mb(); reg_val |= CORE_PWRD_UP; writel_relaxed(reg_val, reg + APCS_CPU_PWR_CTL); mb(); ret = 0; iounmap(l2_saw_base); out_saw_map: iounmap(reg); out_map: of_node_put(saw_node); out_saw: of_node_put(l2_node); out_l2: of_node_put(acc_node); out_acc: of_node_put(cpu_node); return ret; } static DEFINE_PER_CPU(int, cold_boot_done); static int qcom_boot_secondary(unsigned int cpu, int (*func)(unsigned int)) { int ret = 0; if (!per_cpu(cold_boot_done, cpu)) { ret = func(cpu); if (!ret) per_cpu(cold_boot_done, cpu) = true; } /* * Send the secondary CPU a soft interrupt, thereby causing * the boot monitor to read the system wide flags register, * and branch to the address found there. */ arch_send_wakeup_ipi_mask(cpumask_of(cpu)); return ret; } static int msm8660_boot_secondary(unsigned int cpu, struct task_struct *idle) { return qcom_boot_secondary(cpu, scss_release_secondary); } static int kpssv1_boot_secondary(unsigned int cpu, struct task_struct *idle) { return qcom_boot_secondary(cpu, kpssv1_release_secondary); } static int kpssv2_boot_secondary(unsigned int cpu, struct task_struct *idle) { return qcom_boot_secondary(cpu, kpssv2_release_secondary); } static void __init qcom_smp_prepare_cpus(unsigned int max_cpus) { int cpu; if (qcom_scm_set_cold_boot_addr(secondary_startup_arm, cpu_present_mask)) { for_each_present_cpu(cpu) { if (cpu == smp_processor_id()) continue; set_cpu_present(cpu, false); } pr_warn("Failed to set CPU boot address, disabling SMP\n"); } } static const struct smp_operations smp_msm8660_ops __initconst = { .smp_prepare_cpus = qcom_smp_prepare_cpus, .smp_boot_secondary = msm8660_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU .cpu_die = qcom_cpu_die, #endif }; CPU_METHOD_OF_DECLARE(qcom_smp, "qcom,gcc-msm8660", &smp_msm8660_ops); static const struct smp_operations qcom_smp_kpssv1_ops __initconst = { .smp_prepare_cpus = qcom_smp_prepare_cpus, .smp_boot_secondary = kpssv1_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU .cpu_die = qcom_cpu_die, #endif }; CPU_METHOD_OF_DECLARE(qcom_smp_kpssv1, "qcom,kpss-acc-v1", &qcom_smp_kpssv1_ops); static const struct smp_operations qcom_smp_kpssv2_ops __initconst = { .smp_prepare_cpus = qcom_smp_prepare_cpus, .smp_boot_secondary = kpssv2_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU .cpu_die = qcom_cpu_die, #endif }; CPU_METHOD_OF_DECLARE(qcom_smp_kpssv2, "qcom,kpss-acc-v2", &qcom_smp_kpssv2_ops);
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