From 450b6e8257e22708173d0c1c86d34394fba0c5eb Mon Sep 17 00:00:00 2001 From: John Crispin Date: Mon, 7 Dec 2015 17:08:31 +0100 Subject: [PATCH 01/53] arch: mips: ralink: add mt7621 support Signed-off-by: John Crispin --- arch/mips/include/asm/mach-ralink/irq.h | 9 + arch/mips/include/asm/mach-ralink/mt7621.h | 39 ++++ arch/mips/kernel/mips-cm.c | 4 +- arch/mips/kernel/vmlinux.lds.S | 1 + arch/mips/ralink/Kconfig | 18 ++ arch/mips/ralink/Makefile | 7 +- arch/mips/ralink/Platform | 5 + arch/mips/ralink/irq-gic.c | 268 ++++++++++++++++++++++++++++ arch/mips/ralink/malta-amon.c | 81 +++++++++ arch/mips/ralink/mt7621.c | 209 ++++++++++++++++++++++ 10 files changed, 638 insertions(+), 3 deletions(-) create mode 100644 arch/mips/include/asm/mach-ralink/irq.h create mode 100644 arch/mips/include/asm/mach-ralink/mt7621.h create mode 100644 arch/mips/ralink/irq-gic.c create mode 100644 arch/mips/ralink/malta-amon.c create mode 100644 arch/mips/ralink/mt7621.c --- /dev/null +++ b/arch/mips/include/asm/mach-ralink/irq.h @@ -0,0 +1,9 @@ +#ifndef __ASM_MACH_RALINK_IRQ_H +#define __ASM_MACH_RALINK_IRQ_H + +#define GIC_NUM_INTRS 64 +#define NR_IRQS 256 + +#include_next + +#endif --- /dev/null +++ b/arch/mips/include/asm/mach-ralink/mt7621.h @@ -0,0 +1,39 @@ +/* + * 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. + * + * Parts of this file are based on Ralink's 2.6.21 BSP + * + * Copyright (C) 2008-2011 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * Copyright (C) 2013 John Crispin + */ + +#ifndef _MT7621_REGS_H_ +#define _MT7621_REGS_H_ + +#define MT7621_SYSC_BASE 0x1E000000 + +#define SYSC_REG_CHIP_NAME0 0x00 +#define SYSC_REG_CHIP_NAME1 0x04 +#define SYSC_REG_CHIP_REV 0x0c +#define SYSC_REG_SYSTEM_CONFIG0 0x10 +#define SYSC_REG_SYSTEM_CONFIG1 0x14 + +#define CHIP_REV_PKG_MASK 0x1 +#define CHIP_REV_PKG_SHIFT 16 +#define CHIP_REV_VER_MASK 0xf +#define CHIP_REV_VER_SHIFT 8 +#define CHIP_REV_ECO_MASK 0xf + +#define MT7621_DRAM_BASE 0x0 +#define MT7621_DDR2_SIZE_MIN 32 +#define MT7621_DDR2_SIZE_MAX 256 + +#define MT7621_CHIP_NAME0 0x3637544D +#define MT7621_CHIP_NAME1 0x20203132 + +#define MIPS_GIC_IRQ_BASE (MIPS_CPU_IRQ_BASE + 8) + +#endif --- a/arch/mips/kernel/mips-cm.c +++ b/arch/mips/kernel/mips-cm.c @@ -232,7 +232,7 @@ int mips_cm_probe(void) write_gcr_base(base_reg); /* disable CM regions */ - write_gcr_reg0_base(CM_GCR_REGn_BASE_BASEADDR_MSK); +/* write_gcr_reg0_base(CM_GCR_REGn_BASE_BASEADDR_MSK); write_gcr_reg0_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK); write_gcr_reg1_base(CM_GCR_REGn_BASE_BASEADDR_MSK); write_gcr_reg1_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK); @@ -240,7 +240,7 @@ int mips_cm_probe(void) write_gcr_reg2_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK); write_gcr_reg3_base(CM_GCR_REGn_BASE_BASEADDR_MSK); write_gcr_reg3_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK); - +*/ /* probe for an L2-only sync region */ mips_cm_probe_l2sync(); --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -51,6 +51,7 @@ SECTIONS /* read-only */ _text = .; /* Text and read-only data */ .text : { + /*. = . + 0x8000; */ TEXT_TEXT SCHED_TEXT LOCK_TEXT --- a/arch/mips/ralink/Kconfig +++ b/arch/mips/ralink/Kconfig @@ -12,6 +12,11 @@ config RALINK_ILL_ACC depends on SOC_RT305X default y +config IRQ_INTC + bool + default y + depends on !SOC_MT7621 + choice prompt "Ralink SoC selection" default SOC_RT305X @@ -34,6 +39,15 @@ choice config SOC_MT7620 bool "MT7620/8" + config SOC_MT7621 + bool "MT7621" + select MIPS_CPU_SCACHE + select SYS_SUPPORTS_MULTITHREADING + select SYS_SUPPORTS_SMP + select SYS_SUPPORTS_MIPS_CMP + select MIPS_GIC + select IRQ_GIC + select HW_HAS_PCI endchoice choice @@ -65,6 +79,10 @@ choice depends on SOC_MT7620 select BUILTIN_DTB + config DTB_MT7621_EVAL + bool "MT7621 eval kit" + depends on SOC_MT7621 + endchoice endif --- a/arch/mips/ralink/Makefile +++ b/arch/mips/ralink/Makefile @@ -6,16 +6,21 @@ # Copyright (C) 2009-2011 Gabor Juhos # Copyright (C) 2013 John Crispin -obj-y := prom.o of.o reset.o clk.o irq.o timer.o +obj-y := prom.o of.o reset.o clk.o timer.o obj-$(CONFIG_CLKEVT_RT3352) += cevt-rt3352.o obj-$(CONFIG_RALINK_ILL_ACC) += ill_acc.o +obj-$(CONFIG_IRQ_INTC) += irq.o +obj-$(CONFIG_MIPS_GIC_IPI) += irq-gic.o +obj-$(CONFIG_MIPS_MT_SMP) += malta-amon.o + obj-$(CONFIG_SOC_RT288X) += rt288x.o obj-$(CONFIG_SOC_RT305X) += rt305x.o obj-$(CONFIG_SOC_RT3883) += rt3883.o obj-$(CONFIG_SOC_MT7620) += mt7620.o +obj-$(CONFIG_SOC_MT7621) += mt7621.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o --- a/arch/mips/ralink/Platform +++ b/arch/mips/ralink/Platform @@ -27,3 +27,8 @@ cflags-$(CONFIG_SOC_RT3883) += -I$(srctr # load-$(CONFIG_SOC_MT7620) += 0xffffffff80000000 cflags-$(CONFIG_SOC_MT7620) += -I$(srctree)/arch/mips/include/asm/mach-ralink/mt7620 + +# Ralink MT7621 +# +load-$(CONFIG_SOC_MT7621) += 0xffffffff80001000 +cflags-$(CONFIG_SOC_MT7621) += -I$(srctree)/arch/mips/include/asm/mach-ralink/mt7621 --- /dev/null +++ b/arch/mips/ralink/irq-gic.c @@ -0,0 +1,42 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + +#include +#include + +#include + +extern int __init gic_of_init(struct device_node *node, + struct device_node *parent); + +unsigned int get_c0_compare_int(void) +{ + return gic_get_c0_compare_int(); +} + +static struct of_device_id __initdata of_irq_ids[] = { + { .compatible = "mti,cpu-interrupt-controller", .data = mips_cpu_irq_of_init }, + { .compatible = "mti,gic", .data = gic_of_init }, + {}, +}; + +void __init +arch_init_irq(void) +{ + of_irq_init(of_irq_ids); +} --- /dev/null +++ b/arch/mips/ralink/malta-amon.c @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2007 MIPS Technologies, Inc. + * All rights reserved. + + * This program is free software; you can distribute 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 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Arbitrary Monitor interface + */ + +#include +#include +#include + +#include +#include +#include + +int amon_cpu_avail(int cpu) +{ + struct cpulaunch *launch = (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH); + + if (cpu < 0 || cpu >= NCPULAUNCH) { + pr_debug("avail: cpu%d is out of range\n", cpu); + return 0; + } + + launch += cpu; + if (!(launch->flags & LAUNCH_FREADY)) { + pr_debug("avail: cpu%d is not ready\n", cpu); + return 0; + } + if (launch->flags & (LAUNCH_FGO|LAUNCH_FGONE)) { + pr_debug("avail: too late.. cpu%d is already gone\n", cpu); + return 0; + } + + return 1; +} + +void amon_cpu_start(int cpu, + unsigned long pc, unsigned long sp, + unsigned long gp, unsigned long a0) +{ + volatile struct cpulaunch *launch = + (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH); + + if (!amon_cpu_avail(cpu)) + return; + if (cpu == smp_processor_id()) { + pr_debug("launch: I am cpu%d!\n", cpu); + return; + } + launch += cpu; + + pr_debug("launch: starting cpu%d\n", cpu); + + launch->pc = pc; + launch->gp = gp; + launch->sp = sp; + launch->a0 = a0; + + smp_wmb(); /* Target must see parameters before go */ + launch->flags |= LAUNCH_FGO; + smp_wmb(); /* Target must see go before we poll */ + + while ((launch->flags & LAUNCH_FGONE) == 0) + ; + smp_rmb(); /* Target will be updating flags soon */ + pr_debug("launch: cpu%d gone!\n", cpu); +} --- /dev/null +++ b/arch/mips/ralink/mt7621.c @@ -0,0 +1,209 @@ +/* + * 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. + * + * Parts of this file are based on Ralink's 2.6.21 BSP + * + * Copyright (C) 2008-2011 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * Copyright (C) 2013 John Crispin + */ + +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include + +#include "common.h" + +#define SYSC_REG_SYSCFG 0x10 +#define SYSC_REG_CPLL_CLKCFG0 0x2c +#define SYSC_REG_CUR_CLK_STS 0x44 +#define CPU_CLK_SEL (BIT(30) | BIT(31)) + +#define MT7621_GPIO_MODE_UART1 1 +#define MT7621_GPIO_MODE_I2C 2 +#define MT7621_GPIO_MODE_UART3_MASK 0x3 +#define MT7621_GPIO_MODE_UART3_SHIFT 3 +#define MT7621_GPIO_MODE_UART3_GPIO 1 +#define MT7621_GPIO_MODE_UART2_MASK 0x3 +#define MT7621_GPIO_MODE_UART2_SHIFT 5 +#define MT7621_GPIO_MODE_UART2_GPIO 1 +#define MT7621_GPIO_MODE_JTAG 7 +#define MT7621_GPIO_MODE_WDT_MASK 0x3 +#define MT7621_GPIO_MODE_WDT_SHIFT 8 +#define MT7621_GPIO_MODE_WDT_GPIO 1 +#define MT7621_GPIO_MODE_PCIE_RST 0 +#define MT7621_GPIO_MODE_PCIE_REF 2 +#define MT7621_GPIO_MODE_PCIE_MASK 0x3 +#define MT7621_GPIO_MODE_PCIE_SHIFT 10 +#define MT7621_GPIO_MODE_PCIE_GPIO 1 +#define MT7621_GPIO_MODE_MDIO_MASK 0x3 +#define MT7621_GPIO_MODE_MDIO_SHIFT 12 +#define MT7621_GPIO_MODE_MDIO_GPIO 1 +#define MT7621_GPIO_MODE_RGMII1 14 +#define MT7621_GPIO_MODE_RGMII2 15 +#define MT7621_GPIO_MODE_SPI_MASK 0x3 +#define MT7621_GPIO_MODE_SPI_SHIFT 16 +#define MT7621_GPIO_MODE_SPI_GPIO 1 +#define MT7621_GPIO_MODE_SDHCI_MASK 0x3 +#define MT7621_GPIO_MODE_SDHCI_SHIFT 18 +#define MT7621_GPIO_MODE_SDHCI_GPIO 1 + +static struct rt2880_pmx_func uart1_grp[] = { FUNC("uart1", 0, 1, 2) }; +static struct rt2880_pmx_func i2c_grp[] = { FUNC("i2c", 0, 3, 2) }; +static struct rt2880_pmx_func uart3_grp[] = { + FUNC("uart3", 0, 5, 4), + FUNC("i2s", 2, 5, 4), + FUNC("spdif3", 3, 5, 4), +}; +static struct rt2880_pmx_func uart2_grp[] = { + FUNC("uart2", 0, 9, 4), + FUNC("pcm", 2, 9, 4), + FUNC("spdif2", 3, 9, 4), +}; +static struct rt2880_pmx_func jtag_grp[] = { FUNC("jtag", 0, 13, 5) }; +static struct rt2880_pmx_func wdt_grp[] = { + FUNC("wdt rst", 0, 18, 1), + FUNC("wdt refclk", 2, 18, 1), +}; +static struct rt2880_pmx_func pcie_rst_grp[] = { + FUNC("pcie rst", MT7621_GPIO_MODE_PCIE_RST, 19, 1), + FUNC("pcie refclk", MT7621_GPIO_MODE_PCIE_REF, 19, 1) +}; +static struct rt2880_pmx_func mdio_grp[] = { FUNC("mdio", 0, 20, 2) }; +static struct rt2880_pmx_func rgmii2_grp[] = { FUNC("rgmii2", 0, 22, 12) }; +static struct rt2880_pmx_func spi_grp[] = { + FUNC("spi", 0, 34, 7), + FUNC("nand1", 2, 34, 7), +}; +static struct rt2880_pmx_func sdhci_grp[] = { + FUNC("sdhci", 0, 41, 8), + FUNC("nand2", 2, 41, 8), +}; +static struct rt2880_pmx_func rgmii1_grp[] = { FUNC("rgmii1", 0, 49, 12) }; + +static struct rt2880_pmx_group mt7621_pinmux_data[] = { + GRP("uart1", uart1_grp, 1, MT7621_GPIO_MODE_UART1), + GRP("i2c", i2c_grp, 1, MT7621_GPIO_MODE_I2C), + GRP_G("uart3", uart3_grp, MT7621_GPIO_MODE_UART3_MASK, + MT7621_GPIO_MODE_UART3_GPIO, MT7621_GPIO_MODE_UART3_SHIFT), + GRP_G("uart2", uart2_grp, MT7621_GPIO_MODE_UART2_MASK, + MT7621_GPIO_MODE_UART2_GPIO, MT7621_GPIO_MODE_UART2_SHIFT), + GRP("jtag", jtag_grp, 1, MT7621_GPIO_MODE_JTAG), + GRP_G("wdt", wdt_grp, MT7621_GPIO_MODE_WDT_MASK, + MT7621_GPIO_MODE_WDT_GPIO, MT7621_GPIO_MODE_WDT_SHIFT), + GRP_G("pcie", pcie_rst_grp, MT7621_GPIO_MODE_PCIE_MASK, + MT7621_GPIO_MODE_PCIE_GPIO, MT7621_GPIO_MODE_PCIE_SHIFT), + GRP_G("mdio", mdio_grp, MT7621_GPIO_MODE_MDIO_MASK, + MT7621_GPIO_MODE_MDIO_GPIO, MT7621_GPIO_MODE_MDIO_SHIFT), + GRP("rgmii2", rgmii2_grp, 1, MT7621_GPIO_MODE_RGMII2), + GRP_G("spi", spi_grp, MT7621_GPIO_MODE_SPI_MASK, + MT7621_GPIO_MODE_SPI_GPIO, MT7621_GPIO_MODE_SPI_SHIFT), + GRP_G("sdhci", sdhci_grp, MT7621_GPIO_MODE_SDHCI_MASK, + MT7621_GPIO_MODE_SDHCI_GPIO, MT7621_GPIO_MODE_SDHCI_SHIFT), + GRP("rgmii1", rgmii1_grp, 1, MT7621_GPIO_MODE_RGMII1), + { 0 } +}; + +void __init ralink_clk_init(void) +{ + int cpu_fdiv = 0; + int cpu_ffrac = 0; + int fbdiv = 0; + u32 clk_sts, syscfg; + u8 clk_sel = 0, xtal_mode; + u32 cpu_clk; + + if ((rt_sysc_r32(SYSC_REG_CPLL_CLKCFG0) & CPU_CLK_SEL) != 0) + clk_sel = 1; + + switch (clk_sel) { + case 0: + clk_sts = rt_sysc_r32(SYSC_REG_CUR_CLK_STS); + cpu_fdiv = ((clk_sts >> 8) & 0x1F); + cpu_ffrac = (clk_sts & 0x1F); + cpu_clk = (500 * cpu_ffrac / cpu_fdiv) * 1000 * 1000; + break; + + case 1: + fbdiv = ((rt_sysc_r32(0x648) >> 4) & 0x7F) + 1; + syscfg = rt_sysc_r32(SYSC_REG_SYSCFG); + xtal_mode = (syscfg >> 6) & 0x7; + if(xtal_mode >= 6) { //25Mhz Xtal + cpu_clk = 25 * fbdiv * 1000 * 1000; + } else if(xtal_mode >=3) { //40Mhz Xtal + cpu_clk = 40 * fbdiv * 1000 * 1000; + } else { // 20Mhz Xtal + cpu_clk = 20 * fbdiv * 1000 * 1000; + } + break; + } + cpu_clk = 880000000; + ralink_clk_add("cpu", cpu_clk); + ralink_clk_add("1e000b00.spi", 50000000); + ralink_clk_add("1e000c00.uartlite", 50000000); + ralink_clk_add("1e000d00.uart", 50000000); +} + +void __init ralink_of_remap(void) +{ + rt_sysc_membase = plat_of_remap_node("mtk,mt7621-sysc"); + rt_memc_membase = plat_of_remap_node("mtk,mt7621-memc"); + + if (!rt_sysc_membase || !rt_memc_membase) + panic("Failed to remap core resources"); +} + +void prom_soc_init(struct ralink_soc_info *soc_info) +{ + void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7621_SYSC_BASE); + unsigned char *name = NULL; + u32 n0; + u32 n1; + u32 rev; + + n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0); + n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1); + + if (n0 == MT7621_CHIP_NAME0 && n1 == MT7621_CHIP_NAME1) { + name = "MT7621"; + soc_info->compatible = "mtk,mt7621-soc"; + } else { + panic("mt7621: unknown SoC, n0:%08x n1:%08x\n", n0, n1); + } + + rev = __raw_readl(sysc + SYSC_REG_CHIP_REV); + + snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN, + "MediaTek %s ver:%u eco:%u", + name, + (rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK, + (rev & CHIP_REV_ECO_MASK)); + + soc_info->mem_size_min = MT7621_DDR2_SIZE_MIN; + soc_info->mem_size_max = MT7621_DDR2_SIZE_MAX; + soc_info->mem_base = MT7621_DRAM_BASE; + + rt2880_pinmux_data = mt7621_pinmux_data; + + /* Early detection of CMP support */ + mips_cm_probe(); + mips_cpc_probe(); + + if (!register_cps_smp_ops()) + return; + if (!register_cmp_smp_ops()) + return; + if (!register_vsmp_smp_ops()) + return; +} --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -862,7 +862,7 @@ void __init gic_init(unsigned long gic_b __gic_init(gic_base_addr, gic_addrspace_size, cpu_vec, irqbase, NULL); } -static int __init gic_of_init(struct device_node *node, +int __init gic_of_init(struct device_node *node, struct device_node *parent) { struct resource res;