diff options
Diffstat (limited to 'target/linux/mediatek/patches/0042-ARM-mediatek-add-smp-bringup-code.patch')
| -rw-r--r-- | target/linux/mediatek/patches/0042-ARM-mediatek-add-smp-bringup-code.patch | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/target/linux/mediatek/patches/0042-ARM-mediatek-add-smp-bringup-code.patch b/target/linux/mediatek/patches/0042-ARM-mediatek-add-smp-bringup-code.patch deleted file mode 100644 index c03fb5f6cb..0000000000 --- a/target/linux/mediatek/patches/0042-ARM-mediatek-add-smp-bringup-code.patch +++ /dev/null @@ -1,170 +0,0 @@ -From daa2c1f9202f08628d4f91a1cf4dafb44c9bcafe Mon Sep 17 00:00:00 2001 -From: "Joe.C" <yingjoe.chen@mediatek.com> -Date: Fri, 1 May 2015 15:43:28 +0800 -Subject: [PATCH 42/76] ARM: mediatek: add smp bringup code - -Add support for booting secondary CPUs on mt6589, mt8127 -and mt8135. - -Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com> ---- - arch/arm/mach-mediatek/Makefile | 3 + - arch/arm/mach-mediatek/platsmp.c | 145 ++++++++++++++++++++++++++++++++++++++ - 2 files changed, 148 insertions(+) - create mode 100644 arch/arm/mach-mediatek/platsmp.c - ---- a/arch/arm/mach-mediatek/Makefile -+++ b/arch/arm/mach-mediatek/Makefile -@@ -1 +1,4 @@ -+ifeq ($(CONFIG_SMP),y) -+obj-$(CONFIG_ARCH_MEDIATEK) += platsmp.o -+endif - obj-$(CONFIG_ARCH_MEDIATEK) += mediatek.o ---- /dev/null -+++ b/arch/arm/mach-mediatek/platsmp.c -@@ -0,0 +1,145 @@ -+/* -+ * arch/arm/mach-mediatek/platsmp.c -+ * -+ * Copyright (c) 2014 Mediatek Inc. -+ * Author: Shunli Wang <shunli.wang@mediatek.com> -+ * Yingjoe Chen <yingjoe.chen@mediatek.com> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ */ -+#include <linux/io.h> -+#include <linux/memblock.h> -+#include <linux/of.h> -+#include <linux/of_address.h> -+#include <linux/string.h> -+#include <linux/threads.h> -+ -+#define MTK_MAX_CPU 8 -+#define MTK_SMP_REG_SIZE 0x1000 -+ -+struct mtk_smp_boot_info { -+ unsigned long smp_base; -+ unsigned int jump_reg; -+ unsigned int boot_reg; -+ unsigned int core_keys[MTK_MAX_CPU - 1]; -+ unsigned int core_regs[MTK_MAX_CPU - 1]; -+}; -+ -+static const struct mtk_smp_boot_info mtk_mt8135_tz_boot = { -+ 0x80002000, 1020, 1012, -+ { 0x534c4131, 0x4c415332, 0x41534c33 }, -+ { 1016, 1016, 1016}, -+}; -+ -+static const struct mtk_smp_boot_info mtk_mt6589_boot = { -+ 0x10002000, 0x34, 0x30, -+ { 0x534c4131, 0x4c415332, 0x41534c33 }, -+ { 0x38, 0x3c, 0x40 }, -+}; -+ -+static const struct of_device_id mtk_tz_smp_boot_infos[] __initconst = { -+ { .compatible = "mediatek,mt8135", .data = &mtk_mt8135_tz_boot }, -+ { .compatible = "mediatek,mt8127", .data = &mtk_mt8135_tz_boot }, -+}; -+ -+static const struct of_device_id mtk_smp_boot_infos[] __initconst = { -+ { .compatible = "mediatek,mt6589", .data = &mtk_mt6589_boot }, -+}; -+ -+static void __iomem *mtk_smp_base; -+static const struct mtk_smp_boot_info *mtk_smp_info; -+ -+static int mtk_boot_secondary(unsigned int cpu, struct task_struct *idle) -+{ -+ if (!mtk_smp_base) -+ return -EINVAL; -+ -+ if (!mtk_smp_info->core_keys[cpu-1]) -+ return -EINVAL; -+ -+ writel_relaxed(mtk_smp_info->core_keys[cpu-1], -+ mtk_smp_base + mtk_smp_info->core_regs[cpu-1]); -+ -+ arch_send_wakeup_ipi_mask(cpumask_of(cpu)); -+ -+ return 0; -+} -+ -+static void __init __mtk_smp_prepare_cpus(unsigned int max_cpus, int trustzone) -+{ -+ int i, num; -+ const struct of_device_id *infos; -+ -+ if (trustzone) { -+ num = ARRAY_SIZE(mtk_tz_smp_boot_infos); -+ infos = mtk_tz_smp_boot_infos; -+ } else { -+ num = ARRAY_SIZE(mtk_smp_boot_infos); -+ infos = mtk_smp_boot_infos; -+ } -+ -+ /* Find smp boot info for this SoC */ -+ for (i = 0; i < num; i++) { -+ if (of_machine_is_compatible(infos[i].compatible)) { -+ mtk_smp_info = infos[i].data; -+ break; -+ } -+ } -+ -+ if (!mtk_smp_info) { -+ pr_err("%s: Device is not supported\n", __func__); -+ return; -+ } -+ -+ if (trustzone) { -+ if (memblock_reserve(mtk_smp_info->smp_base, MTK_SMP_REG_SIZE)) { -+ pr_err("%s: Can't reserve smp memory\n", __func__); -+ return; -+ } -+ mtk_smp_base = phys_to_virt(mtk_smp_info->smp_base); -+ } else { -+ mtk_smp_base = ioremap(mtk_smp_info->smp_base, MTK_SMP_REG_SIZE); -+ if (!mtk_smp_base) { -+ pr_err("%s: Can't remap %lx\n", __func__, -+ mtk_smp_info->smp_base); -+ return; -+ } -+ } -+ -+ /* -+ * write the address of slave startup address into the system-wide -+ * jump register -+ */ -+ writel_relaxed(virt_to_phys(secondary_startup), -+ mtk_smp_base + mtk_smp_info->jump_reg); -+} -+ -+static void __init mtk_tz_smp_prepare_cpus(unsigned int max_cpus) -+{ -+ __mtk_smp_prepare_cpus(max_cpus, 1); -+} -+ -+static void __init mtk_smp_prepare_cpus(unsigned int max_cpus) -+{ -+ __mtk_smp_prepare_cpus(max_cpus, 0); -+} -+ -+static struct smp_operations mt81xx_tz_smp_ops __initdata = { -+ .smp_prepare_cpus = mtk_tz_smp_prepare_cpus, -+ .smp_boot_secondary = mtk_boot_secondary, -+}; -+CPU_METHOD_OF_DECLARE(mt81xx_tz_smp, "mediatek,mt81xx-tz-smp", &mt81xx_tz_smp_ops); -+ -+static struct smp_operations mt65xx_smp_ops __initdata = { -+ .smp_prepare_cpus = mtk_smp_prepare_cpus, -+ .smp_boot_secondary = mtk_boot_secondary, -+}; -+CPU_METHOD_OF_DECLARE(mt65xx_smp, "mediatek,mt65xx-smp", &mt65xx_smp_ops); |