mediatek: add support for the new MT7623 Arm SoC

the support is still WIP. next steps are to make the pmic and ethernet work.
this is the first commit to make sure nothing gets lost.

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 47354

1 files changed, 178 insertions, 0 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
new file mode 100644
index 0000000000..8910532e18
--- /dev/null
+++ b/target/linux/mediatek/patches/0042-ARM-mediatek-add-smp-bringup-code.patch
@@ -0,0 +1,178 @@
+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
+
+diff --git a/arch/arm/mach-mediatek/Makefile b/arch/arm/mach-mediatek/Makefile
+index 43e619f..2116460 100644
+--- 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
+diff --git a/arch/arm/mach-mediatek/platsmp.c b/arch/arm/mach-mediatek/platsmp.c
+new file mode 100644
+index 0000000..e266b3d
+--- /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);
+-- 
+1.7.10.4
+