This one is inspired a serie by commits published on Emcraft git repo: https://github.com/EmcraftSystems/linux-emcraft.git Entry commit: f014da1df860ad702d923c95cb97e068bd302cb0 RT75957. twr-k70f120m: basic support by: Alexander Potashev <aspotashev@xxxxxxxxxxx> Signed-off-by: Paul Osmialowski <pawelo@xxxxxxxxxxx> --- Documentation/devicetree/bindings/arm/fsl.txt | 6 + arch/arm/Kconfig | 14 ++- arch/arm/Kconfig-nommu | 1 + arch/arm/Makefile | 1 + arch/arm/boot/dts/kinetis-twr-k70f120m.dts | 16 +++ arch/arm/boot/dts/kinetis.dtsi | 5 + arch/arm/mach-kinetis/Kconfig | 9 ++ arch/arm/mach-kinetis/Makefile | 5 + arch/arm/mach-kinetis/Makefile.boot | 3 + arch/arm/mach-kinetis/include/mach/idle.h | 33 +++++ arch/arm/mach-kinetis/include/mach/kinetis.h | 170 ++++++++++++++++++++++++++ arch/arm/mach-kinetis/kinetis_platform.c | 61 +++++++++ arch/arm/mm/Kconfig | 1 + arch/arm/tools/mach-types | 1 + 14 files changed, 325 insertions(+), 1 deletion(-) create mode 100644 arch/arm/boot/dts/kinetis-twr-k70f120m.dts create mode 100644 arch/arm/boot/dts/kinetis.dtsi create mode 100644 arch/arm/mach-kinetis/Kconfig create mode 100644 arch/arm/mach-kinetis/Makefile create mode 100644 arch/arm/mach-kinetis/Makefile.boot create mode 100644 arch/arm/mach-kinetis/include/mach/idle.h create mode 100644 arch/arm/mach-kinetis/include/mach/kinetis.h create mode 100644 arch/arm/mach-kinetis/kinetis_platform.c diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt index 2a3ba73..36179fd 100644 --- a/Documentation/devicetree/bindings/arm/fsl.txt +++ b/Documentation/devicetree/bindings/arm/fsl.txt @@ -135,3 +135,9 @@ LS2085A ARMv8 based Simulator model Required root node properties: - compatible = "fsl,ls2085a-simu", "fsl,ls2085a"; +Freescale Kinetis SoC Device Tree Bindings +------------------------------------------ + +TWR-K70F120M Kinetis K70 based development board. +Required root node compatible properties: + - compatible = "fsl,kinetis-twr-k70f120m" diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 8ef8f8f..747cdea 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -877,6 +877,8 @@ source "arch/arm/mach-ixp4xx/Kconfig" source "arch/arm/mach-keystone/Kconfig" +source "arch/arm/mach-kinetis/Kconfig" + source "arch/arm/mach-ks8695/Kconfig" source "arch/arm/mach-meson/Kconfig" @@ -971,6 +973,16 @@ config ARCH_EFM32 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko processors. +config ARCH_KINETIS + bool "Freescale Kinetis MCU" + depends on ARM_SINGLE_ARMV7M + select CPU_CORTEXM3 + select ARM_CPU_IDLE_QUIRKS + select ARMV7M_SYSTICK + select ZLIB_INFLATE_STACK_SAVING if ZLIB_INFLATE + help + This enables support for the Freescale Kinetis MCUs + config ARCH_LPC18XX bool "NXP LPC18xx/LPC43xx" depends on ARM_SINGLE_ARMV7M @@ -1740,7 +1752,7 @@ source "mm/Kconfig" config FORCE_MAX_ZONEORDER int "Maximum zone order" if ARCH_SHMOBILE_LEGACY range 11 64 if ARCH_SHMOBILE_LEGACY - default "12" if SOC_AM33XX + default "12" if SOC_AM33XX || ARCH_KINETIS default "9" if SA1111 || ARCH_EFM32 default "11" help diff --git a/arch/arm/Kconfig-nommu b/arch/arm/Kconfig-nommu index 98220e8..2b08e7a 100644 --- a/arch/arm/Kconfig-nommu +++ b/arch/arm/Kconfig-nommu @@ -69,6 +69,7 @@ config ZLIB_INFLATE_STACK_SAVING config COPY_VECTOR_TABLE_TO_SRAM_ADDR hex 'If non-zero, copy Vector Table to this SRAM Address' if CPU_V7M + default 0x20000000 if ARCH_KINETIS default 0x00000000 depends on CPU_V7M help diff --git a/arch/arm/Makefile b/arch/arm/Makefile index a7e1007..761db56 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -171,6 +171,7 @@ machine-$(CONFIG_ARCH_IOP32X) += iop32x machine-$(CONFIG_ARCH_IOP33X) += iop33x machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx machine-$(CONFIG_ARCH_KEYSTONE) += keystone +machine-$(CONFIG_ARCH_KINETIS) += kinetis machine-$(CONFIG_ARCH_KS8695) += ks8695 machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx diff --git a/arch/arm/boot/dts/kinetis-twr-k70f120m.dts b/arch/arm/boot/dts/kinetis-twr-k70f120m.dts new file mode 100644 index 0000000..edccf37 --- /dev/null +++ b/arch/arm/boot/dts/kinetis-twr-k70f120m.dts @@ -0,0 +1,16 @@ +/* + * Device tree for TWR-K70F120M development board. + * + */ + +/dts-v1/; +#include "kinetis.dtsi" + +/ { + model = "Freescale TWR-K70F120M Development Kit"; + compatible = "fsl,kinetis-twr-k70f120m"; + + memory { + reg = <0x8000000 0x8000000>; + }; +}; diff --git a/arch/arm/boot/dts/kinetis.dtsi b/arch/arm/boot/dts/kinetis.dtsi new file mode 100644 index 0000000..93d2a8a --- /dev/null +++ b/arch/arm/boot/dts/kinetis.dtsi @@ -0,0 +1,5 @@ +/* + * Device tree for Freescale Kinetis SoC. + * + */ +#include "armv7-m.dtsi" diff --git a/arch/arm/mach-kinetis/Kconfig b/arch/arm/mach-kinetis/Kconfig new file mode 100644 index 0000000..300bcea --- /dev/null +++ b/arch/arm/mach-kinetis/Kconfig @@ -0,0 +1,9 @@ +if ARCH_KINETIS + +config MACH_KINETIS + bool "Kinetis K70 based development board" + default y + help + Say Y here if you are using Kinetis K70 based development board + +endif diff --git a/arch/arm/mach-kinetis/Makefile b/arch/arm/mach-kinetis/Makefile new file mode 100644 index 0000000..3746b3d --- /dev/null +++ b/arch/arm/mach-kinetis/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the Freescale Kinetis platform files +# + +obj-$(CONFIG_MACH_KINETIS) += kinetis_platform.o diff --git a/arch/arm/mach-kinetis/Makefile.boot b/arch/arm/mach-kinetis/Makefile.boot new file mode 100644 index 0000000..3b442ab --- /dev/null +++ b/arch/arm/mach-kinetis/Makefile.boot @@ -0,0 +1,3 @@ + zreladdr-y := 0x08008000 +params_phys-y := 0x08000100 +initrd_phys-y := 0x08100000 diff --git a/arch/arm/mach-kinetis/include/mach/idle.h b/arch/arm/mach-kinetis/include/mach/idle.h new file mode 100644 index 0000000..0aafefd --- /dev/null +++ b/arch/arm/mach-kinetis/include/mach/idle.h @@ -0,0 +1,33 @@ +/* + * Based on original code by Vladimir Khusainov <vlad@xxxxxxxxxxx> + * + * (C) Copyright 2011, 2012 + * Emcraft Systems, <www.emcraft.com> + * Vladimir Khusainov <vlad@xxxxxxxxxxx> + * + * Copyright (C) 2015 Paul Osmialowski <pawelo@xxxxxxxxxxx> + * + * 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. + */ + +#ifndef _MACH_KINETIS_IDLE_H +#define _MACH_KINETIS_IDLE_H + +#ifndef __ASSEMBLY__ + +#include <linux/io.h> + +static inline void handle_cpu_idle_quirks(void) +{ + /* + * This is a dirty hack that invalidates the I/D bus cache + * on Kinetis K70. This must be done after arch idle. + */ + writel(readl(IOMEM(0xe0082000)) | 0x85000000, IOMEM(0xe0082000)); +} + +#endif /* __ASSEMBLY__ */ + +#endif /*_MACH_KINETIS_IDLE_H */ diff --git a/arch/arm/mach-kinetis/include/mach/kinetis.h b/arch/arm/mach-kinetis/include/mach/kinetis.h new file mode 100644 index 0000000..54d0a8b --- /dev/null +++ b/arch/arm/mach-kinetis/include/mach/kinetis.h @@ -0,0 +1,170 @@ +/* + * (C) Copyright 2012 + * Emcraft Systems, <www.emcraft.com> + * Alexander Potashev <aspotashev@xxxxxxxxxxx> + * + * 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. + */ + +#ifndef _MACH_KINETIS_KINETIS_H +#define _MACH_KINETIS_KINETIS_H + +#include <asm/byteorder.h> + +/* + * This Kinetis port assumes that the CPU works in little-endian mode. + * Switching to big-endian will require different bit offsets in peripheral + * devices' registers. Also, some bit groups may lay on byte edges, so issue + * with big-endian cannot be fixed only by defining bit offsets differently + * for the big-endian mode. + */ +#ifndef __LITTLE_ENDIAN +#error This Kinetis port assumes that the CPU works in little-endian mode +#endif + +/* + * Peripheral memory map + */ +#define KINETIS_AIPS0PERIPH_BASE 0x40000000 +#define KINETIS_AIPS1PERIPH_BASE 0x40080000 + +#ifndef __ASSEMBLY__ + +#include <asm/types.h> + +/* + * Limits for the `kinetis_periph_enable()` function: + * 1. The number of SIM_SCGC[] registers + * 2. The number of bits in those registers + */ +#define KINETIS_SIM_CG_NUMREGS 7 +#define KINETIS_SIM_CG_NUMBITS 32 + +/* + * System Integration Module (SIM) register map + * + * This map actually covers two hardware modules: + * 1. SIM low-power logic, at 0x40047000 + * 2. System integration module (SIM), at 0x40048000 + */ +struct kinetis_sim_regs { + u32 sopt1; /* System Options Register 1 */ + u32 rsv0[1024]; + u32 sopt2; /* System Options Register 2 */ + u32 rsv1; + u32 sopt4; /* System Options Register 4 */ + u32 sopt5; /* System Options Register 5 */ + u32 sopt6; /* System Options Register 6 */ + u32 sopt7; /* System Options Register 7 */ + u32 rsv2[2]; + u32 sdid; /* System Device Identification Register */ + u32 scgc[KINETIS_SIM_CG_NUMREGS]; /* Clock Gating Regs 1...7 */ + u32 clkdiv1; /* System Clock Divider Register 1 */ + u32 clkdiv2; /* System Clock Divider Register 2 */ + u32 fcfg1; /* Flash Configuration Register 1 */ + u32 fcfg2; /* Flash Configuration Register 2 */ + u32 uidh; /* Unique Identification Register High */ + u32 uidmh; /* Unique Identification Register Mid-High */ + u32 uidml; /* Unique Identification Register Mid Low */ + u32 uidl; /* Unique Identification Register Low */ + u32 clkdiv3; /* System Clock Divider Register 3 */ + u32 clkdiv4; /* System Clock Divider Register 4 */ + u32 mcr; /* Misc Control Register */ +}; + +/* + * SIM registers base + */ +#define KINETIS_SIM_BASE (KINETIS_AIPS0PERIPH_BASE + 0x00047000) +#define KINETIS_SIM_PTR(reg) \ + (&(((struct kinetis_sim_regs *)(KINETIS_SIM_BASE))->reg)) +#define KINETIS_SIM_RD(reg) readl_relaxed(KINETIS_SIM_PTR(reg)) +#define KINETIS_SIM_WR(reg, val) writel_relaxed((val), KINETIS_SIM_PTR(reg)) +#define KINETIS_SIM_SET(reg, mask) \ + KINETIS_SIM_WR(reg, (KINETIS_SIM_RD(reg)) | (mask)) +#define KINETIS_SIM_RESET(reg, mask) \ + KINETIS_SIM_WR(reg, (KINETIS_SIM_RD(reg)) & (~(mask))) +#define KINETIS_SIM_ISSET(reg, mask) \ + (KINETIS_SIM_RD(reg) & (mask)) + +/* + * SIM registers + */ +/* + * System Options Register 2 + */ +/* USB HS clock source select */ +#define KINETIS_SIM_SOPT2_USBHSRC_BITS 2 +#define KINETIS_SIM_SOPT2_USBHSRC_MSK (3 << KINETIS_SIM_SOPT2_USBHSRC_BITS) +#define KINETIS_SIM_SOPT2_USBHSRC_PLL0 (1 << KINETIS_SIM_SOPT2_USBHSRC_BITS) +#define KINETIS_SIM_SOPT2_USBHSRC_PLL1 (2 << KINETIS_SIM_SOPT2_USBHSRC_BITS) + +/* USB FS clock source select */ +#define KINETIS_SIM_SOPT2_USBFSRC_BITS 22 +#define KINETIS_SIM_SOPT2_USBFSRC_MSK (3 << KINETIS_SIM_SOPT2_USBFSRC_BITS) +#define KINETIS_SIM_SOPT2_USBFSRC_PLL0 (1 << KINETIS_SIM_SOPT2_USBFSRC_BITS) +#define KINETIS_SIM_SOPT2_USBFSRC_PLL1 (2 << KINETIS_SIM_SOPT2_USBFSRC_BITS) +#define KINETIS_SIM_SOPT2_USBF_CLKSEL (1 << 18) + +/* + * System Clock Divider Register 1 + */ +/* Clock 1 output divider value (for the core/system clock) */ +#define KINETIS_SIM_CLKDIV1_OUTDIV1_BITS 28 +#define KINETIS_SIM_CLKDIV1_OUTDIV1_MSK \ + (((1 << 4) - 1) << KINETIS_SIM_CLKDIV1_OUTDIV1_BITS) +/* Clock 2 output divider value (for the peripheral clock) */ +#define KINETIS_SIM_CLKDIV1_OUTDIV2_BITS 24 +#define KINETIS_SIM_CLKDIV1_OUTDIV2_MSK \ + (((1 << 4) - 1) << KINETIS_SIM_CLKDIV1_OUTDIV2_BITS) + +/* + * System Clock Divider Register 2 + */ +/* USB HS clock divider fraction */ +#define KINETIS_SIM_CLKDIV2_USBHSFRAC_BIT 8 +#define KINETIS_SIM_CLKDIV2_USBHSFRAC_MSK \ + (1 << KINETIS_SIM_CLKDIV2_USBHSFRAC_BIT) +/* USB HS clock divider divisor */ +#define KINETIS_SIM_CLKDIV2_USBHSDIV_BIT 9 +#define KINETIS_SIM_CLKDIV2_USBHSDIV_MSK \ + (7 << KINETIS_SIM_CLKDIV2_USBHSDIV_BIT) + +/* USB FS clock divider fraction */ +#define KINETIS_SIM_CLKDIV2_USBFSFRAC_BIT 0 +#define KINETIS_SIM_CLKDIV2_USBFSFRAC_MSK \ + (1 << KINETIS_SIM_CLKDIV2_USBFSFRAC_BIT) +/* USB FS clock divider divisor */ +#define KINETIS_SIM_CLKDIV2_USBFSDIV_BIT 1 +#define KINETIS_SIM_CLKDIV2_USBFSDIV_MSK \ + (7 << KINETIS_SIM_CLKDIV2_USBFSDIV_BIT) + +/* + * System Clock Divider Register 3 + */ +/* LCD Controller clock divider divisor */ +#define KINETIS_SIM_CLKDIV3_LCDCDIV_BITS 16 +#define KINETIS_SIM_CLKDIV3_LCDCDIV_BITWIDTH 12 +#define KINETIS_SIM_CLKDIV3_LCDCDIV_MSK \ + (((1 << KINETIS_SIM_CLKDIV3_LCDCDIV_BITWIDTH) - 1) << \ + KINETIS_SIM_CLKDIV3_LCDCDIV_BITS) +/* LCD Controller clock divider fraction */ +#define KINETIS_SIM_CLKDIV3_LCDCFRAC_BITS 8 +#define KINETIS_SIM_CLKDIV3_LCDCFRAC_BITWIDTH 8 +#define KINETIS_SIM_CLKDIV3_LCDCFRAC_MSK \ + (((1 << KINETIS_SIM_CLKDIV3_LCDCFRAC_BITWIDTH) - 1) << \ + KINETIS_SIM_CLKDIV3_LCDCFRAC_BITS) + +/* + * Misc Control Register + */ +/* 60 MHz ULPI clock (ULPI_CLK) output enable */ +#define KINETIS_SIM_MCR_ULPICLKOBE_MSK (1 << 30) +/* Start LCDC display */ +#define KINETIS_SIM_MCR_LCDSTART_MSK (1 << 16) + +#endif /* __ASSEMBLY__ */ + +#endif /* _MACH_KINETIS_KINETIS_H */ diff --git a/arch/arm/mach-kinetis/kinetis_platform.c b/arch/arm/mach-kinetis/kinetis_platform.c new file mode 100644 index 0000000..f1b6607 --- /dev/null +++ b/arch/arm/mach-kinetis/kinetis_platform.c @@ -0,0 +1,61 @@ +/* + * kinetis_platform.c - Freescale Kinetis K70F120M Development Board + * + * Based on legacy pre-OF code by Alexander Potashev <aspotashev@xxxxxxxxxxx> + * + * (C) Copyright 2011, 2012 + * Emcraft Systems, <www.emcraft.com> + * Alexander Potashev <aspotashev@xxxxxxxxxxx> + * + * Copyright (C) 2015 Paul Osmialowski <pawelo@xxxxxxxxxxx> + * + * 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. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/of_platform.h> +#include <asm/v7m.h> +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +/* + * Map required regions. + * This being the no-MMU Linux, I am not mapping anything + * since all I/O registers are available at their physical addresses. + */ +static void __init kinetis_map_io(void) +{ +} + +/* + * Freescale Kinetis platform initialization + */ +static void __init kinetis_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static const char *const kinetis_compat[] __initconst = { + "fsl,kinetis-twr-k70f120m", + NULL +}; + +/* + * Freescale Kinetis platform machine description + */ +DT_MACHINE_START(KINETIS, "Freescale Kinetis") + .dt_compat = kinetis_compat, + .restart = armv7m_restart, + /* + * Physical address of the serial port used for the early + * kernel debugging. + * This address is actually never used in the MMU-less kernel + * (since no mapping is needed to access this port), + * but let's keep these fields filled out for consistency. + */ + .map_io = kinetis_map_io, + .init_machine = kinetis_init, +MACHINE_END diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index d19cb4d..b611ac6 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -618,6 +618,7 @@ config CPU_V7M_NUM_IRQ depends on CPU_V7M default 90 if ARCH_STM32 default 38 if ARCH_EFM32 + default 106 if ARCH_KINETIS default 112 if SOC_VF610 default 240 help diff --git a/arch/arm/tools/mach-types b/arch/arm/tools/mach-types index 2ed1b8a..1d05516 100644 --- a/arch/arm/tools/mach-types +++ b/arch/arm/tools/mach-types @@ -554,6 +554,7 @@ smdk4412 MACH_SMDK4412 SMDK4412 3765 marzen MACH_MARZEN MARZEN 3790 krome MACH_KROME KROME 3797 armadillo800eva MACH_ARMADILLO800EVA ARMADILLO800EVA 3863 +kinetis MACH_KINETIS KINETIS 3896 mx53_umobo MACH_MX53_UMOBO MX53_UMOBO 3927 mt4 MACH_MT4 MT4 3981 u8520 MACH_U8520 U8520 3990 -- 2.3.6 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
