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diff --git a/Documentation/arm/sti/overview.txt b/Documentation/arm/sti/overview.txt new file mode 100644 index 000000000000..1a4e93d6027f --- /dev/null +++ b/Documentation/arm/sti/overview.txt @@ -0,0 +1,33 @@ + STi ARM Linux Overview + ========================== + +Introduction +------------ + + The ST Microelectronics Multimedia and Application Processors range of + CortexA9 System-on-Chip are supported by the 'STi' platform of + ARM Linux. Currently STiH415, STiH416 SOCs are supported with both + B2000 and B2020 Reference boards. + + + configuration + ------------- + + A generic configuration is provided for both STiH415/416, and can be used as the + default by + make stih41x_defconfig + + Layout + ------ + All the files for multiple machine families (STiH415, STiH416, and STiG125) + are located in the platform code contained in arch/arm/mach-sti + + There is a generic board board-dt.c in the mach folder which support + Flattened Device Tree, which means, It works with any compatible board with + Device Trees. + + + Document Author + --------------- + + Srinivas Kandagatla <srinivas.kandagatla@st.com>, (c) 2013 ST Microelectronics diff --git a/Documentation/arm/sti/stih415-overview.txt b/Documentation/arm/sti/stih415-overview.txt new file mode 100644 index 000000000000..1383e33f265d --- /dev/null +++ b/Documentation/arm/sti/stih415-overview.txt @@ -0,0 +1,12 @@ + STiH415 Overview + ================ + +Introduction +------------ + + The STiH415 is the next generation of HD, AVC set-top box processors + for satellite, cable, terrestrial and IP-STB markets. + + Features + - ARM Cortex-A9 1.0 GHz, dual-core CPU + - SATA2x2,USB 2.0x3, PCIe, Gbit Ethernet MACx2 diff --git a/Documentation/arm/sti/stih416-overview.txt b/Documentation/arm/sti/stih416-overview.txt new file mode 100644 index 000000000000..558444c201c6 --- /dev/null +++ b/Documentation/arm/sti/stih416-overview.txt @@ -0,0 +1,12 @@ + STiH416 Overview + ================ + +Introduction +------------ + + The STiH416 is the next generation of HD, AVC set-top box processors + for satellite, cable, terrestrial and IP-STB markets. + + Features + - ARM Cortex-A9 1.2 GHz dual core CPU + - SATA2x2,USB 2.0x3, PCIe, Gbit Ethernet MACx2 diff --git a/MAINTAINERS b/MAINTAINERS index 5be702cc8449..599d50a8901e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1201,6 +1201,15 @@ M: Dinh Nguyen <dinguyen@altera.com> S: Maintained F: drivers/clk/socfpga/ +ARM/STI ARCHITECTURE +M: Srinivas Kandagatla <srinivas.kandagatla@st.com> +M: Stuart Menefy <stuart.menefy@st.com> +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +L: kernel@stlinux.com +W: http://www.stlinux.com +S: Maintained +F: arch/arm/mach-sti/ + ARM/TECHNOLOGIC SYSTEMS TS7250 MACHINE SUPPORT M: Lennert Buytenhek <kernel@wantstofly.org> L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index aa27704be4e4..9fbdc10fe835 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -991,6 +991,8 @@ source "arch/arm/mach-socfpga/Kconfig" source "arch/arm/mach-spear/Kconfig" +source "arch/arm/mach-sti/Kconfig" + source "arch/arm/mach-s3c24xx/Kconfig" if ARCH_S3C64XX diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index fe079417daa2..b3ae502427bf 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -497,6 +497,16 @@ choice This option selects UART0 on VIA/Wondermedia System-on-a-chip devices, including VT8500, WM8505, WM8650 and WM8850. + config DEBUG_STI_UART + depends on ARCH_STI + bool "Use StiH415/416 ASC for low-level debug" + help + Say Y here if you want kernel low-level debugging support + on StiH415/416 based platforms like B2000, B2020. + It support UART2 and SBC_UART1. + + If unsure, say N. + config DEBUG_LL_UART_NONE bool "No low-level debugging UART" depends on !ARCH_MULTIPLATFORM @@ -631,6 +641,30 @@ choice endchoice +choice + prompt "Low-level debug console UART" + depends on DEBUG_LL && DEBUG_STI_UART + + config STIH41X_DEBUG_ASC2 + bool "ASC2 UART" + help + Say Y here if you want kernel low-level debugging support + on STiH415/416 based platforms like b2000, which has + default UART wired up to ASC2. + + If unsure, say N. + + config STIH41X_DEBUG_SBC_ASC1 + bool "SBC ASC1 UART" + help + Say Y here if you want kernel low-level debugging support + on STiH415/416 based platforms like b2020. which has + default UART wired up to SBC ASC1. + + If unsure, say N. + +endchoice + config DEBUG_LL_INCLUDE string default "debug/bcm2835.S" if DEBUG_BCM2835 @@ -657,6 +691,7 @@ config DEBUG_LL_INCLUDE DEBUG_MMP_UART3 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 default "debug/socfpga.S" if DEBUG_SOCFPGA_UART + default "debug/sti.S" if DEBUG_STI_UART default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1 default "debug/tegra.S" if DEBUG_TEGRA_UART default "debug/ux500.S" if DEBUG_UX500_UART diff --git a/arch/arm/Makefile b/arch/arm/Makefile index b4615aa9bf7a..996bc6d20658 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -192,6 +192,7 @@ machine-$(CONFIG_ARCH_W90X900) += w90x900 machine-$(CONFIG_FOOTBRIDGE) += footbridge machine-$(CONFIG_ARCH_SOCFPGA) += socfpga machine-$(CONFIG_PLAT_SPEAR) += spear +machine-$(CONFIG_ARCH_STI) += sti machine-$(CONFIG_ARCH_VIRT) += virt machine-$(CONFIG_ARCH_ZYNQ) += zynq machine-$(CONFIG_ARCH_SUNXI) += sunxi diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 60404661585d..3027d0e4aedd 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -182,6 +182,10 @@ dtb-$(CONFIG_ARCH_SPEAR3XX)+= spear300-evb.dtb \ spear320-evb.dtb \ spear320-hmi.dtb dtb-$(CONFIG_ARCH_SPEAR6XX)+= spear600-evb.dtb +dtb-$(CONFIG_ARCH_STI)+= stih415-b2000.dtb \ + stih416-b2000.dtb \ + stih415-b2020.dtb \ + stih416-b2020.dtb dtb-$(CONFIG_ARCH_SUNXI) += \ sun4i-a10-cubieboard.dtb \ sun4i-a10-mini-xplus.dtb \ diff --git a/arch/arm/boot/dts/st-pincfg.h b/arch/arm/boot/dts/st-pincfg.h new file mode 100644 index 000000000000..8c45d85ac13e --- /dev/null +++ b/arch/arm/boot/dts/st-pincfg.h @@ -0,0 +1,71 @@ +#ifndef _ST_PINCFG_H_ +#define _ST_PINCFG_H_ + +/* Alternate functions */ +#define ALT1 1 +#define ALT2 2 +#define ALT3 3 +#define ALT4 4 +#define ALT5 5 +#define ALT6 6 +#define ALT7 7 + +/* Output enable */ +#define OE (1 << 27) +/* Pull Up */ +#define PU (1 << 26) +/* Open Drain */ +#define OD (1 << 26) +#define RT (1 << 23) +#define INVERTCLK (1 << 22) +#define CLKNOTDATA (1 << 21) +#define DOUBLE_EDGE (1 << 20) +#define CLK_A (0 << 18) +#define CLK_B (1 << 18) +#define CLK_C (2 << 18) +#define CLK_D (3 << 18) + +/* User-frendly defines for Pin Direction */ + /* oe = 0, pu = 0, od = 0 */ +#define IN (0) + /* oe = 0, pu = 1, od = 0 */ +#define IN_PU (PU) + /* oe = 1, pu = 0, od = 0 */ +#define OUT (OE) + /* oe = 1, pu = 0, od = 1 */ +#define BIDIR (OE | OD) + /* oe = 1, pu = 1, od = 1 */ +#define BIDIR_PU (OE | PU | OD) + +/* RETIME_TYPE */ +/* + * B Mode + * Bypass retime with optional delay parameter + */ +#define BYPASS (0) +/* + * R0, R1, R0D, R1D modes + * single-edge data non inverted clock, retime data with clk + */ +#define SE_NICLK_IO (RT) +/* + * RIV0, RIV1, RIV0D, RIV1D modes + * single-edge data inverted clock, retime data with clk + */ +#define SE_ICLK_IO (RT | INVERTCLK) +/* + * R0E, R1E, R0ED, R1ED modes + * double-edge data, retime data with clk + */ +#define DE_IO (RT | DOUBLE_EDGE) +/* + * CIV0, CIV1 modes with inverted clock + * Retiming the clk pins will park clock & reduce the noise within the core. + */ +#define ICLK (RT | CLKNOTDATA | INVERTCLK) +/* + * CLK0, CLK1 modes with non-inverted clock + * Retiming the clk pins will park clock & reduce the noise within the core. + */ +#define NICLK (RT | CLKNOTDATA) +#endif /* _ST_PINCFG_H_ */ diff --git a/arch/arm/boot/dts/stih415-b2000.dts b/arch/arm/boot/dts/stih415-b2000.dts new file mode 100644 index 000000000000..d4af53160435 --- /dev/null +++ b/arch/arm/boot/dts/stih415-b2000.dts @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +/dts-v1/; +#include "stih415.dtsi" +#include "stih41x-b2000.dtsi" +/ { + model = "STiH415 B2000 Board"; + compatible = "st,stih415", "st,stih415-b2000"; +}; diff --git a/arch/arm/boot/dts/stih415-b2020.dts b/arch/arm/boot/dts/stih415-b2020.dts new file mode 100644 index 000000000000..442b019e9a3a --- /dev/null +++ b/arch/arm/boot/dts/stih415-b2020.dts @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +/dts-v1/; +#include "stih415.dtsi" +#include "stih41x-b2020.dtsi" +/ { + model = "STiH415 B2020 Board"; + compatible = "st,stih415", "st,stih415-b2020"; +}; diff --git a/arch/arm/boot/dts/stih415-clock.dtsi b/arch/arm/boot/dts/stih415-clock.dtsi new file mode 100644 index 000000000000..174c799df741 --- /dev/null +++ b/arch/arm/boot/dts/stih415-clock.dtsi @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited + * + * 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. + */ +/ { + clocks { + /* + * Fixed 30MHz oscillator input to SoC + */ + CLK_SYSIN: CLK_SYSIN { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <30000000>; + }; + + /* + * ARM Peripheral clock for timers + */ + arm_periph_clk: arm_periph_clk { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <500000000>; + }; + + /* + * Bootloader initialized system infrastructure clock for + * serial devices. + */ + CLKS_ICN_REG_0: CLKS_ICN_REG_0 { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <100000000>; + }; + }; +}; diff --git a/arch/arm/boot/dts/stih415-pinctrl.dtsi b/arch/arm/boot/dts/stih415-pinctrl.dtsi new file mode 100644 index 000000000000..1d322b24d1e4 --- /dev/null +++ b/arch/arm/boot/dts/stih415-pinctrl.dtsi @@ -0,0 +1,268 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +#include "st-pincfg.h" +/ { + + aliases { + gpio0 = &PIO0; + gpio1 = &PIO1; + gpio2 = &PIO2; + gpio3 = &PIO3; + gpio4 = &PIO4; + gpio5 = &PIO5; + gpio6 = &PIO6; + gpio7 = &PIO7; + gpio8 = &PIO8; + gpio9 = &PIO9; + gpio10 = &PIO10; + gpio11 = &PIO11; + gpio12 = &PIO12; + gpio13 = &PIO13; + gpio14 = &PIO14; + gpio15 = &PIO15; + gpio16 = &PIO16; + gpio17 = &PIO17; + gpio18 = &PIO18; + gpio19 = &PIO100; + gpio20 = &PIO101; + gpio21 = &PIO102; + gpio22 = &PIO103; + gpio23 = &PIO104; + gpio24 = &PIO105; + gpio25 = &PIO106; + gpio26 = &PIO107; + }; + + soc { + pin-controller-sbc { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih415-sbc-pinctrl"; + st,syscfg = <&syscfg_sbc>; + ranges = <0 0xfe610000 0x5000>; + + PIO0: gpio@fe610000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO0"; + }; + PIO1: gpio@fe611000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO1"; + }; + PIO2: gpio@fe612000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO2"; + }; + PIO3: gpio@fe613000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO3"; + }; + PIO4: gpio@fe614000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO4"; + }; + + sbc_serial1 { + pinctrl_sbc_serial1:sbc_serial1 { + st,pins { + tx = <&PIO2 6 ALT3 OUT>; + rx = <&PIO2 7 ALT3 IN>; + }; + }; + }; + }; + + pin-controller-front { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih415-front-pinctrl"; + st,syscfg = <&syscfg_front>; + ranges = <0 0xfee00000 0x8000>; + + PIO5: gpio@fee00000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO5"; + }; + PIO6: gpio@fee01000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO6"; + }; + PIO7: gpio@fee02000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO7"; + }; + PIO8: gpio@fee03000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO8"; + }; + PIO9: gpio@fee04000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO9"; + }; + PIO10: gpio@fee05000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x5000 0x100>; + st,bank-name = "PIO10"; + }; + PIO11: gpio@fee06000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x6000 0x100>; + st,bank-name = "PIO11"; + }; + PIO12: gpio@fee07000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x7000 0x100>; + st,bank-name = "PIO12"; + }; + }; + + pin-controller-rear { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih415-rear-pinctrl"; + st,syscfg = <&syscfg_rear>; + ranges = <0 0xfe820000 0x8000>; + + PIO13: gpio@fe820000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO13"; + }; + PIO14: gpio@fe821000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO14"; + }; + PIO15: gpio@fe822000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO15"; + }; + PIO16: gpio@fe823000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO16"; + }; + PIO17: gpio@fe824000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO17"; + }; + PIO18: gpio@fe825000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x5000 0x100>; + st,bank-name = "PIO18"; + }; + + serial2 { + pinctrl_serial2: serial2-0 { + st,pins { + tx = <&PIO17 4 ALT2 OUT>; + rx = <&PIO17 5 ALT2 IN>; + }; + }; + }; + }; + + pin-controller-left { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih415-left-pinctrl"; + st,syscfg = <&syscfg_left>; + ranges = <0 0xfd6b0000 0x3000>; + + PIO100: gpio@fd6b0000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO100"; + }; + PIO101: gpio@fd6b1000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO101"; + }; + PIO102: gpio@fd6b2000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO102"; + }; + }; + + pin-controller-right { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih415-right-pinctrl"; + st,syscfg = <&syscfg_right>; + ranges = <0 0xfd330000 0x5000>; + + PIO103: gpio@fd330000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO103"; + }; + PIO104: gpio@fd331000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO104"; + }; + PIO105: gpio@fd332000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO105"; + }; + PIO106: gpio@fd333000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO106"; + }; + PIO107: gpio@fd334000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO107"; + }; + }; + }; +}; diff --git a/arch/arm/boot/dts/stih415.dtsi b/arch/arm/boot/dts/stih415.dtsi new file mode 100644 index 000000000000..74ab8ded4b49 --- /dev/null +++ b/arch/arm/boot/dts/stih415.dtsi @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +#include "stih41x.dtsi" +#include "stih415-clock.dtsi" +#include "stih415-pinctrl.dtsi" +/ { + + L2: cache-controller { + compatible = "arm,pl310-cache"; + reg = <0xfffe2000 0x1000>; + arm,data-latency = <3 2 2>; + arm,tag-latency = <1 1 1>; + cache-unified; + cache-level = <2>; + }; + + soc { + #address-cells = <1>; + #size-cells = <1>; + interrupt-parent = <&intc>; + ranges; + compatible = "simple-bus"; + + syscfg_sbc: sbc-syscfg@fe600000{ + compatible = "st,stih415-sbc-syscfg", "syscon"; + reg = <0xfe600000 0xb4>; + }; + + syscfg_front: front-syscfg@fee10000{ + compatible = "st,stih415-front-syscfg", "syscon"; + reg = <0xfee10000 0x194>; + }; + + syscfg_rear: rear-syscfg@fe830000{ + compatible = "st,stih415-rear-syscfg", "syscon"; + reg = <0xfe830000 0x190>; + }; + + /* MPE syscfgs */ + syscfg_left: left-syscfg@fd690000{ + compatible = "st,stih415-left-syscfg", "syscon"; + reg = <0xfd690000 0x78>; + }; + + syscfg_right: right-syscfg@fd320000{ + compatible = "st,stih415-right-syscfg", "syscon"; + reg = <0xfd320000 0x180>; + }; + + syscfg_system: system-syscfg@fdde0000 { + compatible = "st,stih415-system-syscfg", "syscon"; + reg = <0xfdde0000 0x15c>; + }; + + syscfg_lpm: lpm-syscfg@fe4b5100{ + compatible = "st,stih415-lpm-syscfg", "syscon"; + reg = <0xfe4b5100 0x08>; + }; + + serial2: serial@fed32000 { + compatible = "st,asc"; + status = "disabled"; + reg = <0xfed32000 0x2c>; + interrupts = <0 197 0>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_serial2>; + clocks = <&CLKS_ICN_REG_0>; + }; + + /* SBC comms block ASCs in SASG1 */ + sbc_serial1: serial@fe531000 { + compatible = "st,asc"; + status = "disabled"; + reg = <0xfe531000 0x2c>; + interrupts = <0 210 0>; + clocks = <&CLK_SYSIN>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_sbc_serial1>; + }; + }; +}; diff --git a/arch/arm/boot/dts/stih416-b2000.dts b/arch/arm/boot/dts/stih416-b2000.dts new file mode 100644 index 000000000000..a5eb6eee10bf --- /dev/null +++ b/arch/arm/boot/dts/stih416-b2000.dts @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +/dts-v1/; +#include "stih416.dtsi" +#include "stih41x-b2000.dtsi" + +/ { + compatible = "st,stih416", "st,stih416-b2000"; + model = "STiH416 B2000"; +}; diff --git a/arch/arm/boot/dts/stih416-b2020.dts b/arch/arm/boot/dts/stih416-b2020.dts new file mode 100644 index 000000000000..276f28da573a --- /dev/null +++ b/arch/arm/boot/dts/stih416-b2020.dts @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +/dts-v1/; +#include "stih416.dtsi" +#include "stih41x-b2020.dtsi" +/ { + model = "STiH416 B2020"; + compatible = "st,stih416", "st,stih416-b2020"; + +}; diff --git a/arch/arm/boot/dts/stih416-clock.dtsi b/arch/arm/boot/dts/stih416-clock.dtsi new file mode 100644 index 000000000000..7026bf1158d8 --- /dev/null +++ b/arch/arm/boot/dts/stih416-clock.dtsi @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2013 STMicroelectronics R&D Limited + * <stlinux-devel@stlinux.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. + */ +/ { + clocks { + /* + * Fixed 30MHz oscillator inputs to SoC + */ + CLK_SYSIN: CLK_SYSIN { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <30000000>; + clock-output-names = "CLK_SYSIN"; + }; + + /* + * ARM Peripheral clock for timers + */ + arm_periph_clk: arm_periph_clk { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <600000000>; + }; + + /* + * Bootloader initialized system infrastructure clock for + * serial devices. + */ + CLK_S_ICN_REG_0: clockgenA0@4 { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <100000000>; + clock-output-names = "CLK_S_ICN_REG_0"; + }; + }; +}; diff --git a/arch/arm/boot/dts/stih416-pinctrl.dtsi b/arch/arm/boot/dts/stih416-pinctrl.dtsi new file mode 100644 index 000000000000..957b21a71b4b --- /dev/null +++ b/arch/arm/boot/dts/stih416-pinctrl.dtsi @@ -0,0 +1,295 @@ + +/* + * Copyright (C) 2013 STMicroelectronics Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +#include "st-pincfg.h" +/ { + + aliases { + gpio0 = &PIO0; + gpio1 = &PIO1; + gpio2 = &PIO2; + gpio3 = &PIO3; + gpio4 = &PIO4; + gpio5 = &PIO40; + gpio6 = &PIO5; + gpio7 = &PIO6; + gpio8 = &PIO7; + gpio9 = &PIO8; + gpio10 = &PIO9; + gpio11 = &PIO10; + gpio12 = &PIO11; + gpio13 = &PIO12; + gpio14 = &PIO30; + gpio15 = &PIO31; + gpio16 = &PIO13; + gpio17 = &PIO14; + gpio18 = &PIO15; + gpio19 = &PIO16; + gpio20 = &PIO17; + gpio21 = &PIO18; + gpio22 = &PIO100; + gpio23 = &PIO101; + gpio24 = &PIO102; + gpio25 = &PIO103; + gpio26 = &PIO104; + gpio27 = &PIO105; + gpio28 = &PIO106; + gpio29 = &PIO107; + }; + + soc { + pin-controller-sbc { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih416-sbc-pinctrl"; + st,syscfg = <&syscfg_sbc>; + ranges = <0 0xfe610000 0x6000>; + + PIO0: gpio@fe610000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO0"; + }; + PIO1: gpio@fe611000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO1"; + }; + PIO2: gpio@fe612000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO2"; + }; + PIO3: gpio@fe613000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO3"; + }; + PIO4: gpio@fe614000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO4"; + }; + PIO40: gpio@fe615000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x5000 0x100>; + st,bank-name = "PIO40"; + st,retime-pin-mask = <0x7f>; + }; + + sbc_serial1 { + pinctrl_sbc_serial1: sbc_serial1 { + st,pins { + tx = <&PIO2 6 ALT3 OUT>; + rx = <&PIO2 7 ALT3 IN>; + }; + }; + }; + }; + + pin-controller-front { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih416-front-pinctrl"; + st,syscfg = <&syscfg_front>; + ranges = <0 0xfee00000 0x10000>; + + PIO5: gpio@fee00000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO5"; + }; + PIO6: gpio@fee01000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO6"; + }; + PIO7: gpio@fee02000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO7"; + }; + PIO8: gpio@fee03000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO8"; + }; + PIO9: gpio@fee04000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO9"; + }; + PIO10: gpio@fee05000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x5000 0x100>; + st,bank-name = "PIO10"; + }; + PIO11: gpio@fee06000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x6000 0x100>; + st,bank-name = "PIO11"; + }; + PIO12: gpio@fee07000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x7000 0x100>; + st,bank-name = "PIO12"; + }; + PIO30: gpio@fee08000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x8000 0x100>; + st,bank-name = "PIO30"; + }; + PIO31: gpio@fee09000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x9000 0x100>; + st,bank-name = "PIO31"; + }; + }; + + pin-controller-rear { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih416-rear-pinctrl"; + st,syscfg = <&syscfg_rear>; + ranges = <0 0xfe820000 0x6000>; + + PIO13: gpio@fe820000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO13"; + }; + PIO14: gpio@fe821000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO14"; + }; + PIO15: gpio@fe822000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO15"; + }; + PIO16: gpio@fe823000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO16"; + }; + PIO17: gpio@fe824000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO17"; + }; + PIO18: gpio@fe825000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x5000 0x100>; + st,bank-name = "PIO18"; + st,retime-pin-mask = <0xf>; + }; + + serial2 { + pinctrl_serial2: serial2-0 { + st,pins { + tx = <&PIO17 4 ALT2 OUT>; + rx = <&PIO17 5 ALT2 IN>; + output-enable = <&PIO11 3 ALT2 OUT>; + }; + }; + }; + }; + + pin-controller-fvdp-fe { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih416-fvdp-fe-pinctrl"; + st,syscfg = <&syscfg_fvdp_fe>; + ranges = <0 0xfd6b0000 0x3000>; + + PIO100: gpio@fd6b0000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO100"; + }; + PIO101: gpio@fd6b1000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO101"; + }; + PIO102: gpio@fd6b2000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO102"; + }; + }; + + pin-controller-fvdp-lite { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,stih416-fvdp-lite-pinctrl"; + st,syscfg = <&syscfg_fvdp_lite>; + ranges = <0 0xfd330000 0x5000>; + + PIO103: gpio@fd330000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0 0x100>; + st,bank-name = "PIO103"; + }; + PIO104: gpio@fd331000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x1000 0x100>; + st,bank-name = "PIO104"; + }; + PIO105: gpio@fd332000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x2000 0x100>; + st,bank-name = "PIO105"; + }; + PIO106: gpio@fd333000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x3000 0x100>; + st,bank-name = "PIO106"; + }; + + PIO107: gpio@fd334000 { + gpio-controller; + #gpio-cells = <1>; + reg = <0x4000 0x100>; + st,bank-name = "PIO107"; + st,retime-pin-mask = <0xf>; + }; + }; + }; +}; diff --git a/arch/arm/boot/dts/stih416.dtsi b/arch/arm/boot/dts/stih416.dtsi new file mode 100644 index 000000000000..3cecd9689a49 --- /dev/null +++ b/arch/arm/boot/dts/stih416.dtsi @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2012 STMicroelectronics Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +#include "stih41x.dtsi" +#include "stih416-clock.dtsi" +#include "stih416-pinctrl.dtsi" +/ { + L2: cache-controller { + compatible = "arm,pl310-cache"; + reg = <0xfffe2000 0x1000>; + arm,data-latency = <3 3 3>; + arm,tag-latency = <2 2 2>; + cache-unified; + cache-level = <2>; + }; + + soc { + #address-cells = <1>; + #size-cells = <1>; + interrupt-parent = <&intc>; + ranges; + compatible = "simple-bus"; + + syscfg_sbc:sbc-syscfg@fe600000{ + compatible = "st,stih416-sbc-syscfg", "syscon"; + reg = <0xfe600000 0x1000>; + }; + + syscfg_front:front-syscfg@fee10000{ + compatible = "st,stih416-front-syscfg", "syscon"; + reg = <0xfee10000 0x1000>; + }; + + syscfg_rear:rear-syscfg@fe830000{ + compatible = "st,stih416-rear-syscfg", "syscon"; + reg = <0xfe830000 0x1000>; + }; + + /* MPE */ + syscfg_fvdp_fe:fvdp-fe-syscfg@fddf0000{ + compatible = "st,stih416-fvdp-fe-syscfg", "syscon"; + reg = <0xfddf0000 0x1000>; + }; + + syscfg_fvdp_lite:fvdp-lite-syscfg@fd6a0000{ + compatible = "st,stih416-fvdp-lite-syscfg", "syscon"; + reg = <0xfd6a0000 0x1000>; + }; + + syscfg_cpu:cpu-syscfg@fdde0000{ + compatible = "st,stih416-cpu-syscfg", "syscon"; + reg = <0xfdde0000 0x1000>; + }; + + syscfg_compo:compo-syscfg@fd320000{ + compatible = "st,stih416-compo-syscfg", "syscon"; + reg = <0xfd320000 0x1000>; + }; + + syscfg_transport:transport-syscfg@fd690000{ + compatible = "st,stih416-transport-syscfg", "syscon"; + reg = <0xfd690000 0x1000>; + }; + + syscfg_lpm:lpm-syscfg@fe4b5100{ + compatible = "st,stih416-lpm-syscfg", "syscon"; + reg = <0xfe4b5100 0x8>; + }; + + serial2: serial@fed32000{ + compatible = "st,asc"; + status = "disabled"; + reg = <0xfed32000 0x2c>; + interrupts = <0 197 0>; + clocks = <&CLK_S_ICN_REG_0>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_serial2>; + }; + + /* SBC_UART1 */ + sbc_serial1: serial@fe531000 { + compatible = "st,asc"; + status = "disabled"; + reg = <0xfe531000 0x2c>; + interrupts = <0 210 0>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_sbc_serial1>; + clocks = <&CLK_SYSIN>; + }; + }; +}; diff --git a/arch/arm/boot/dts/stih41x-b2000.dtsi b/arch/arm/boot/dts/stih41x-b2000.dtsi new file mode 100644 index 000000000000..8e694d2b8f5b --- /dev/null +++ b/arch/arm/boot/dts/stih41x-b2000.dtsi @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +/ { + + memory{ + device_type = "memory"; + reg = <0x60000000 0x40000000>; + }; + + chosen { + bootargs = "console=ttyAS0,115200"; + linux,stdout-path = &serial2; + }; + + aliases { + ttyAS0 = &serial2; + }; + + soc { + serial2: serial@fed32000 { + status = "okay"; + }; + + leds { + compatible = "gpio-leds"; + fp_led { + #gpio-cells = <1>; + label = "Front Panel LED"; + gpios = <&PIO105 7>; + linux,default-trigger = "heartbeat"; + }; + }; + + }; +}; diff --git a/arch/arm/boot/dts/stih41x-b2020.dtsi b/arch/arm/boot/dts/stih41x-b2020.dtsi new file mode 100644 index 000000000000..133e18143b1b --- /dev/null +++ b/arch/arm/boot/dts/stih41x-b2020.dtsi @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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 + * publishhed by the Free Software Foundation. + */ +/ { + memory{ + device_type = "memory"; + reg = <0x40000000 0x80000000>; + }; + + chosen { + bootargs = "console=ttyAS0,115200"; + linux,stdout-path = &sbc_serial1; + }; + + aliases { + ttyAS0 = &sbc_serial1; + }; + soc { + sbc_serial1: serial@fe531000 { + status = "okay"; + }; + + leds { + compatible = "gpio-leds"; + red { + #gpio-cells = <1>; + label = "Front Panel LED"; + gpios = <&PIO4 1>; + linux,default-trigger = "heartbeat"; + }; + green { + gpios = <&PIO4 7>; + default-state = "off"; + }; + }; + }; +}; diff --git a/arch/arm/boot/dts/stih41x.dtsi b/arch/arm/boot/dts/stih41x.dtsi new file mode 100644 index 000000000000..7321403cab8a --- /dev/null +++ b/arch/arm/boot/dts/stih41x.dtsi @@ -0,0 +1,38 @@ +/ { + #address-cells = <1>; + #size-cells = <1>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu@0 { + compatible = "arm,cortex-a9"; + reg = <0>; + }; + cpu@1 { + compatible = "arm,cortex-a9"; + reg = <1>; + }; + }; + + intc: interrupt-controller@fffe1000 { + compatible = "arm,cortex-a9-gic"; + #interrupt-cells = <3>; + interrupt-controller; + reg = <0xfffe1000 0x1000>, + <0xfffe0100 0x100>; + }; + + scu@fffe0000 { + compatible = "arm,cortex-a9-scu"; + reg = <0xfffe0000 0x1000>; + }; + + timer@fffe0200 { + interrupt-parent = <&intc>; + compatible = "arm,cortex-a9-global-timer"; + reg = <0xfffe0200 0x100>; + interrupts = <1 11 0x04>; + clocks = <&arm_periph_clk>; + }; +}; diff --git a/arch/arm/include/debug/sti.S b/arch/arm/include/debug/sti.S new file mode 100644 index 000000000000..e3aa58ff1776 --- /dev/null +++ b/arch/arm/include/debug/sti.S @@ -0,0 +1,61 @@ +/* + * arch/arm/include/debug/sti.S + * + * Debugging macro include header + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * + * 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. + */ + +#define STIH41X_COMMS_BASE 0xfed00000 +#define STIH41X_ASC2_BASE (STIH41X_COMMS_BASE+0x32000) + +#define STIH41X_SBC_LPM_BASE 0xfe400000 +#define STIH41X_SBC_COMMS_BASE (STIH41X_SBC_LPM_BASE + 0x100000) +#define STIH41X_SBC_ASC1_BASE (STIH41X_SBC_COMMS_BASE + 0x31000) + + +#define VIRT_ADDRESS(x) (x - 0x1000000) + +#if IS_ENABLED(CONFIG_STIH41X_DEBUG_ASC2) +#define DEBUG_LL_UART_BASE STIH41X_ASC2_BASE +#endif + +#if IS_ENABLED(CONFIG_STIH41X_DEBUG_SBC_ASC1) +#define DEBUG_LL_UART_BASE STIH41X_SBC_ASC1_BASE +#endif + +#ifndef DEBUG_LL_UART_BASE +#error "DEBUG UART is not Configured" +#endif + +#define ASC_TX_BUF_OFF 0x04 +#define ASC_CTRL_OFF 0x0c +#define ASC_STA_OFF 0x14 + +#define ASC_STA_TX_FULL (1<<9) +#define ASC_STA_TX_EMPTY (1<<1) + + + .macro addruart, rp, rv, tmp + ldr \rp, =DEBUG_LL_UART_BASE @ physical base + ldr \rv, =VIRT_ADDRESS(DEBUG_LL_UART_BASE) @ virt base + .endm + + .macro senduart,rd,rx + strb \rd, [\rx, #ASC_TX_BUF_OFF] + .endm + + .macro waituart,rd,rx +1001: ldr \rd, [\rx, #ASC_STA_OFF] + tst \rd, #ASC_STA_TX_FULL + bne 1001b + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #ASC_STA_OFF] + tst \rd, #ASC_STA_TX_EMPTY + beq 1001b + .endm diff --git a/arch/arm/mach-sti/Kconfig b/arch/arm/mach-sti/Kconfig new file mode 100644 index 000000000000..d04e3bfe1918 --- /dev/null +++ b/arch/arm/mach-sti/Kconfig @@ -0,0 +1,45 @@ +menuconfig ARCH_STI + bool "STMicroelectronics Consumer Electronics SOCs with Device Trees" if ARCH_MULTI_V7 + select GENERIC_CLOCKEVENTS + select CLKDEV_LOOKUP + select ARM_GIC + select ARM_GLOBAL_TIMER + select PINCTRL + select PINCTRL_ST + select MFD_SYSCON + select MIGHT_HAVE_CACHE_L2X0 + select HAVE_SMP + select HAVE_ARM_SCU if SMP + select ARCH_REQUIRE_GPIOLIB + select ARM_ERRATA_720789 + select ARM_ERRATA_754322 + select PL310_ERRATA_753970 if CACHE_PL310 + select PL310_ERRATA_769419 if CACHE_PL310 + help + Include support for STiH41x SOCs like STiH415/416 using the device tree + for discovery + More information at Documentation/arm/STiH41x and + at Documentation/devicetree + + +if ARCH_STI + +config SOC_STIH415 + bool "STiH415 STMicroelectronics Consumer Electronics family" + default y + help + This enables support for STMicroelectronics Digital Consumer + Electronics family StiH415 parts, primarily targetted at set-top-box + and other digital audio/video applications using Flattned Device + Trees. + +config SOC_STIH416 + bool "STiH416 STMicroelectronics Consumer Electronics family" + default y + help + This enables support for STMicroelectronics Digital Consumer + Electronics family StiH416 parts, primarily targetted at set-top-box + and other digital audio/video applications using Flattened Device + Trees. + +endif diff --git a/arch/arm/mach-sti/Makefile b/arch/arm/mach-sti/Makefile new file mode 100644 index 000000000000..acb330916333 --- /dev/null +++ b/arch/arm/mach-sti/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_SMP) += platsmp.o headsmp.o +obj-$(CONFIG_ARCH_STI) += board-dt.o diff --git a/arch/arm/mach-sti/board-dt.c b/arch/arm/mach-sti/board-dt.c new file mode 100644 index 000000000000..8fe6f0c46480 --- /dev/null +++ b/arch/arm/mach-sti/board-dt.c @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * Author(s): Srinivas Kandagatla <srinivas.kandagatla@st.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. + */ + +#include <linux/clk-provider.h> +#include <linux/clocksource.h> +#include <linux/irq.h> +#include <asm/hardware/cache-l2x0.h> +#include <asm/mach/arch.h> + +#include "smp.h" + +void __init stih41x_l2x0_init(void) +{ + u32 way_size = 0x4; + u32 aux_ctrl; + /* may be this can be encoded in macros like BIT*() */ + aux_ctrl = (0x1 << L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT) | + (0x1 << L2X0_AUX_CTRL_DATA_PREFETCH_SHIFT) | + (0x1 << L2X0_AUX_CTRL_INSTR_PREFETCH_SHIFT) | + (way_size << L2X0_AUX_CTRL_WAY_SIZE_SHIFT); + + l2x0_of_init(aux_ctrl, L2X0_AUX_CTRL_MASK); +} + +static void __init stih41x_timer_init(void) +{ + of_clk_init(NULL); + clocksource_of_init(); + stih41x_l2x0_init(); +} + +static const char *stih41x_dt_match[] __initdata = { + "st,stih415", + "st,stih416", + NULL +}; + +DT_MACHINE_START(STM, "STiH415/416 SoC with Flattened Device Tree") + .init_time = stih41x_timer_init, + .smp = smp_ops(sti_smp_ops), + .dt_compat = stih41x_dt_match, +MACHINE_END diff --git a/arch/arm/mach-sti/headsmp.S b/arch/arm/mach-sti/headsmp.S new file mode 100644 index 000000000000..78ebc7559f53 --- /dev/null +++ b/arch/arm/mach-sti/headsmp.S @@ -0,0 +1,44 @@ +/* + * arch/arm/mach-sti/headsmp.S + * + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * http://www.st.com + * + * Cloned from linux/arch/arm/mach-vexpress/headsmp.S + * + * Copyright (c) 2003 ARM Limited + * All Rights Reserved + * + * 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/linkage.h> +#include <linux/init.h> + + __INIT + +/* + * ST specific entry point for secondary CPUs. This provides + * a "holding pen" into which all secondary cores are held until we're + * ready for them to initialise. + */ +ENTRY(sti_secondary_startup) + mrc p15, 0, r0, c0, c0, 5 + and r0, r0, #15 + adr r4, 1f + ldmia r4, {r5, r6} + sub r4, r4, r5 + add r6, r6, r4 +pen: ldr r7, [r6] + cmp r7, r0 + bne pen + + /* + * we've been released from the holding pen: secondary_stack + * should now contain the SVC stack for this core + */ + b secondary_startup + +1: .long . + .long pen_release diff --git a/arch/arm/mach-sti/platsmp.c b/arch/arm/mach-sti/platsmp.c new file mode 100644 index 000000000000..977a863468fc --- /dev/null +++ b/arch/arm/mach-sti/platsmp.c @@ -0,0 +1,117 @@ +/* + * arch/arm/mach-sti/platsmp.c + * + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * http://www.st.com + * + * Cloned from linux/arch/arm/mach-vexpress/platsmp.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * 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/init.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/smp.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> + +#include <asm/cacheflush.h> +#include <asm/smp_plat.h> +#include <asm/smp_scu.h> + +#include "smp.h" + +static void __cpuinit write_pen_release(int val) +{ + pen_release = val; + smp_wmb(); + __cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release)); + outer_clean_range(__pa(&pen_release), __pa(&pen_release + 1)); +} + +static DEFINE_SPINLOCK(boot_lock); + +void __cpuinit sti_secondary_init(unsigned int cpu) +{ + trace_hardirqs_off(); + + /* + * let the primary processor know we're out of the + * pen, then head off into the C entry point + */ + write_pen_release(-1); + + /* + * Synchronise with the boot thread. + */ + spin_lock(&boot_lock); + spin_unlock(&boot_lock); +} + +int __cpuinit sti_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + unsigned long timeout; + + /* + * set synchronisation state between this boot processor + * and the secondary one + */ + spin_lock(&boot_lock); + + /* + * The secondary processor is waiting to be released from + * the holding pen - release it, then wait for it to flag + * that it has been released by resetting pen_release. + * + * Note that "pen_release" is the hardware CPU ID, whereas + * "cpu" is Linux's internal ID. + */ + write_pen_release(cpu_logical_map(cpu)); + + /* + * Send the secondary CPU a soft interrupt, thereby causing + * it to jump to the secondary entrypoint. + */ + arch_send_wakeup_ipi_mask(cpumask_of(cpu)); + + timeout = jiffies + (1 * HZ); + while (time_before(jiffies, timeout)) { + smp_rmb(); + if (pen_release == -1) + break; + + udelay(10); + } + + /* + * now the secondary core is starting up let it run its + * calibrations, then wait for it to finish + */ + spin_unlock(&boot_lock); + + return pen_release != -1 ? -ENOSYS : 0; +} + +void __init sti_smp_prepare_cpus(unsigned int max_cpus) +{ + void __iomem *scu_base = NULL; + struct device_node *np = of_find_compatible_node( + NULL, NULL, "arm,cortex-a9-scu"); + if (np) { + scu_base = of_iomap(np, 0); + scu_enable(scu_base); + of_node_put(np); + } +} + +struct smp_operations __initdata sti_smp_ops = { + .smp_prepare_cpus = sti_smp_prepare_cpus, + .smp_secondary_init = sti_secondary_init, + .smp_boot_secondary = sti_boot_secondary, +}; diff --git a/arch/arm/mach-sti/smp.h b/arch/arm/mach-sti/smp.h new file mode 100644 index 000000000000..1871b72b1a7e --- /dev/null +++ b/arch/arm/mach-sti/smp.h @@ -0,0 +1,17 @@ +/* + * arch/arm/mach-sti/smp.h + * + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + * http://www.st.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. + */ + +#ifndef __MACH_STI_SMP_H +#define __MACH_STI_SMP_H + +extern struct smp_operations sti_smp_ops; + +#endif |