diff options
69 files changed, 654 insertions, 867 deletions
diff --git a/Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt b/Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt new file mode 100644 index 00000000000..93f45e9dce7 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt @@ -0,0 +1,19 @@ +NVIDIA Tegra20 real-time clock + +The Tegra RTC maintains seconds and milliseconds counters, and five alarm +registers. The alarms and other interrupts may wake the system from low-power +state. + +Required properties: + +- compatible : should be "nvidia,tegra20-rtc". +- reg : Specifies base physical address and size of the registers. +- interrupts : A single interrupt specifier. + +Example: + +timer { + compatible = "nvidia,tegra20-rtc"; + reg = <0x7000e000 0x100>; + interrupts = <0 2 0x04>; +}; diff --git a/Documentation/devicetree/bindings/timer/nvidia,tegra20-timer.txt b/Documentation/devicetree/bindings/timer/nvidia,tegra20-timer.txt new file mode 100644 index 00000000000..e019fdc3877 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/nvidia,tegra20-timer.txt @@ -0,0 +1,21 @@ +NVIDIA Tegra20 timer + +The Tegra20 timer provides four 29-bit timer channels and a single 32-bit free +running counter. The first two channels may also trigger a watchdog reset. + +Required properties: + +- compatible : should be "nvidia,tegra20-timer". +- reg : Specifies base physical address and size of the registers. +- interrupts : A list of 4 interrupts; one per timer channel. + +Example: + +timer { + compatible = "nvidia,tegra20-timer"; + reg = <0x60005000 0x60>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04>; +}; diff --git a/Documentation/devicetree/bindings/timer/nvidia,tegra30-timer.txt b/Documentation/devicetree/bindings/timer/nvidia,tegra30-timer.txt new file mode 100644 index 00000000000..906109d4c59 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/nvidia,tegra30-timer.txt @@ -0,0 +1,23 @@ +NVIDIA Tegra30 timer + +The Tegra30 timer provides ten 29-bit timer channels, a single 32-bit free +running counter, and 5 watchdog modules. The first two channels may also +trigger a legacy watchdog reset. + +Required properties: + +- compatible : should be "nvidia,tegra30-timer", "nvidia,tegra20-timer". +- reg : Specifies base physical address and size of the registers. +- interrupts : A list of 6 interrupts; one per each of timer channels 1 + through 5, and one for the shared interrupt for the remaining channels. + +timer { + compatible = "nvidia,tegra30-timer", "nvidia,tegra20-timer"; + reg = <0x60005000 0x400>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04 + 0 121 0x04 + 0 122 0x04>; +}; diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 3bb60c8adbf..2277f9530b0 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -650,6 +650,7 @@ config ARCH_TEGRA select HAVE_CLK select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 + select SPARSE_IRQ select USE_OF help This enables support for NVIDIA Tegra based systems (Tegra APX, @@ -891,6 +892,7 @@ config ARCH_U8500 select GENERIC_CLOCKEVENTS select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 + select SPARSE_IRQ help Support for ST-Ericsson's Ux500 architecture @@ -905,6 +907,7 @@ config ARCH_NOMADIK select MIGHT_HAVE_CACHE_L2X0 select PINCTRL select PINCTRL_STN8815 + select SPARSE_IRQ help Support for the Nomadik platform by ST-Ericsson @@ -948,7 +951,7 @@ config ARCH_OMAP help Support for TI's OMAP platform (OMAP1/2/3/4). -config ARCH_VT8500 +config ARCH_VT8500_SINGLE bool "VIA/WonderMedia 85xx" select ARCH_HAS_CPUFREQ select ARCH_REQUIRE_GPIOLIB @@ -958,22 +961,12 @@ config ARCH_VT8500 select GENERIC_CLOCKEVENTS select GENERIC_GPIO select HAVE_CLK + select MULTI_IRQ_HANDLER + select SPARSE_IRQ select USE_OF help Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip. -config ARCH_ZYNQ - bool "Xilinx Zynq ARM Cortex A9 Platform" - select ARM_AMBA - select ARM_GIC - select COMMON_CLK - select CPU_V7 - select GENERIC_CLOCKEVENTS - select ICST - select MIGHT_HAVE_CACHE_L2X0 - select USE_OF - help - Support for Xilinx Zynq ARM Cortex A9 Platform endchoice menu "Multiple platform selection" @@ -1074,7 +1067,6 @@ source "arch/arm/mach-mxs/Kconfig" source "arch/arm/mach-netx/Kconfig" source "arch/arm/mach-nomadik/Kconfig" -source "arch/arm/plat-nomadik/Kconfig" source "arch/arm/plat-omap/Kconfig" @@ -1137,8 +1129,12 @@ source "arch/arm/mach-versatile/Kconfig" source "arch/arm/mach-vexpress/Kconfig" source "arch/arm/plat-versatile/Kconfig" +source "arch/arm/mach-vt8500/Kconfig" + source "arch/arm/mach-w90x900/Kconfig" +source "arch/arm/mach-zynq/Kconfig" + # Definitions to make life easier config ARCH_ACORN bool diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 512b3943854..661030d6bc6 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -379,6 +379,13 @@ choice Say Y here if you want kernel low-level debugging support on Allwinner A1X based platforms on the UART1. + config DEBUG_TEGRA_UART + depends on ARCH_TEGRA + bool "Use Tegra UART for low-level debug" + help + Say Y here if you want kernel low-level debugging support + on Tegra based platforms. + config DEBUG_VEXPRESS_UART0_DETECT bool "Autodetect UART0 on Versatile Express Cortex-A core tiles" depends on ARCH_VEXPRESS && CPU_CP15_MMU @@ -452,6 +459,36 @@ config DEBUG_IMX6Q_UART_PORT Choose UART port on which kernel low-level debug messages should be output. +choice + prompt "Low-level debug console UART" + depends on DEBUG_LL && DEBUG_TEGRA_UART + + config TEGRA_DEBUG_UART_AUTO_ODMDATA + bool "Via ODMDATA" + help + Automatically determines which UART to use for low-level debug based + on the ODMDATA value. This value is part of the BCT, and is written + to the boot memory device using nvflash, or other flashing tool. + When bits 19:18 are 3, then bits 17:15 indicate which UART to use; + 0/1/2/3/4 are UART A/B/C/D/E. + + config TEGRA_DEBUG_UARTA + bool "UART A" + + config TEGRA_DEBUG_UARTB + bool "UART B" + + config TEGRA_DEBUG_UARTC + bool "UART C" + + config TEGRA_DEBUG_UARTD + bool "UART D" + + config TEGRA_DEBUG_UARTE + bool "UART E" + +endchoice + config DEBUG_LL_INCLUDE string default "debug/icedcc.S" if DEBUG_ICEDCC @@ -469,6 +506,8 @@ config DEBUG_LL_INCLUDE default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \ DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1 + default "debug/tegra.S" if DEBUG_TEGRA_UART + default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 default "mach/debug-macro.S" config EARLY_PRINTK diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 9c60f474a55..30c443c406f 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -202,7 +202,6 @@ machine-$(CONFIG_ARCH_SUNXI) += sunxi plat-$(CONFIG_ARCH_OMAP) += omap plat-$(CONFIG_ARCH_S3C64XX) += samsung plat-$(CONFIG_PLAT_IOP) += iop -plat-$(CONFIG_PLAT_NOMADIK) += nomadik plat-$(CONFIG_PLAT_ORION) += orion plat-$(CONFIG_PLAT_PXA) += pxa plat-$(CONFIG_PLAT_S3C24XX) += s3c24xx samsung diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi index fba998e3954..b8effa1cbda 100644 --- a/arch/arm/boot/dts/tegra20.dtsi +++ b/arch/arm/boot/dts/tegra20.dtsi @@ -91,6 +91,12 @@ }; }; + timer@50004600 { + compatible = "arm,cortex-a9-twd-timer"; + reg = <0x50040600 0x20>; + interrupts = <1 13 0x304>; + }; + cache-controller@50043000 { compatible = "arm,pl310-cache"; reg = <0x50043000 0x1000>; @@ -108,6 +114,15 @@ #interrupt-cells = <3>; }; + timer@60005000 { + compatible = "nvidia,tegra20-timer"; + reg = <0x60005000 0x60>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04>; + }; + apbdma: dma { compatible = "nvidia,tegra20-apbdma"; reg = <0x6000a000 0x1200>; @@ -225,6 +240,12 @@ #pwm-cells = <2>; }; + rtc { + compatible = "nvidia,tegra20-rtc"; + reg = <0x7000e000 0x100>; + interrupts = <0 2 0x04>; + }; + i2c@7000c000 { compatible = "nvidia,tegra20-i2c"; reg = <0x7000c000 0x100>; diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index efa603d47a6..529fdb82dfd 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -91,6 +91,12 @@ }; }; + timer@50004600 { + compatible = "arm,cortex-a9-twd-timer"; + reg = <0x50040600 0x20>; + interrupts = <1 13 0xf04>; + }; + cache-controller@50043000 { compatible = "arm,pl310-cache"; reg = <0x50043000 0x1000>; @@ -108,6 +114,17 @@ #interrupt-cells = <3>; }; + timer@60005000 { + compatible = "nvidia,tegra30-timer", "nvidia,tegra20-timer"; + reg = <0x60005000 0x400>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04 + 0 121 0x04 + 0 122 0x04>; + }; + apbdma: dma { compatible = "nvidia,tegra30-apbdma", "nvidia,tegra20-apbdma"; reg = <0x6000a000 0x1400>; @@ -219,6 +236,12 @@ #pwm-cells = <2>; }; + rtc { + compatible = "nvidia,tegra30-rtc", "nvidia,tegra20-rtc"; + reg = <0x7000e000 0x100>; + interrupts = <0 2 0x04>; + }; + i2c@7000c000 { compatible = "nvidia,tegra30-i2c", "nvidia,tegra20-i2c"; reg = <0x7000c000 0x100>; diff --git a/arch/arm/include/debug/tegra.S b/arch/arm/include/debug/tegra.S new file mode 100644 index 00000000000..883d7c22fd9 --- /dev/null +++ b/arch/arm/include/debug/tegra.S @@ -0,0 +1,223 @@ +/* + * Copyright (C) 2010,2011 Google, Inc. + * Copyright (C) 2011-2012 NVIDIA CORPORATION. All Rights Reserved. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * Doug Anderson <dianders@chromium.org> + * Stephen Warren <swarren@nvidia.com> + * + * Portions based on mach-omap2's debug-macro.S + * Copyright (C) 1994-1999 Russell King + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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/serial_reg.h> + +#define UART_SHIFT 2 + +/* Physical addresses */ +#define TEGRA_CLK_RESET_BASE 0x60006000 +#define TEGRA_APB_MISC_BASE 0x70000000 +#define TEGRA_UARTA_BASE 0x70006000 +#define TEGRA_UARTB_BASE 0x70006040 +#define TEGRA_UARTC_BASE 0x70006200 +#define TEGRA_UARTD_BASE 0x70006300 +#define TEGRA_UARTE_BASE 0x70006400 +#define TEGRA_PMC_BASE 0x7000e400 + +#define TEGRA_CLK_RST_DEVICES_L (TEGRA_CLK_RESET_BASE + 0x04) +#define TEGRA_CLK_RST_DEVICES_H (TEGRA_CLK_RESET_BASE + 0x08) +#define TEGRA_CLK_RST_DEVICES_U (TEGRA_CLK_RESET_BASE + 0x0c) +#define TEGRA_CLK_OUT_ENB_L (TEGRA_CLK_RESET_BASE + 0x10) +#define TEGRA_CLK_OUT_ENB_H (TEGRA_CLK_RESET_BASE + 0x14) +#define TEGRA_CLK_OUT_ENB_U (TEGRA_CLK_RESET_BASE + 0x18) +#define TEGRA_PMC_SCRATCH20 (TEGRA_PMC_BASE + 0xa0) +#define TEGRA_APB_MISC_GP_HIDREV (TEGRA_APB_MISC_BASE + 0x804) + +/* + * Must be 1MB-aligned since a 1MB mapping is used early on. + * Must not overlap with regions in mach-tegra/io.c:tegra_io_desc[]. + */ +#define UART_VIRTUAL_BASE 0xfe100000 + +#define checkuart(rp, rv, lhu, bit, uart) \ + /* Load address of CLK_RST register */ \ + movw rp, #TEGRA_CLK_RST_DEVICES_##lhu & 0xffff ; \ + movt rp, #TEGRA_CLK_RST_DEVICES_##lhu >> 16 ; \ + /* Load value from CLK_RST register */ \ + ldr rp, [rp, #0] ; \ + /* Test UART's reset bit */ \ + tst rp, #(1 << bit) ; \ + /* If set, can't use UART; jump to save no UART */ \ + bne 90f ; \ + /* Load address of CLK_OUT_ENB register */ \ + movw rp, #TEGRA_CLK_OUT_ENB_##lhu & 0xffff ; \ + movt rp, #TEGRA_CLK_OUT_ENB_##lhu >> 16 ; \ + /* Load value from CLK_OUT_ENB register */ \ + ldr rp, [rp, #0] ; \ + /* Test UART's clock enable bit */ \ + tst rp, #(1 << bit) ; \ + /* If clear, can't use UART; jump to save no UART */ \ + beq 90f ; \ + /* Passed all tests, load address of UART registers */ \ + movw rp, #TEGRA_UART##uart##_BASE & 0xffff ; \ + movt rp, #TEGRA_UART##uart##_BASE >> 16 ; \ + /* Jump to save UART address */ \ + b 91f + + .macro addruart, rp, rv, tmp + adr \rp, 99f @ actual addr of 99f + ldr \rv, [\rp] @ linked addr is stored there + sub \rv, \rv, \rp @ offset between the two + ldr \rp, [\rp, #4] @ linked tegra_uart_config + sub \tmp, \rp, \rv @ actual tegra_uart_config + ldr \rp, [\tmp] @ Load tegra_uart_config + cmp \rp, #1 @ needs initialization? + bne 100f @ no; go load the addresses + mov \rv, #0 @ yes; record init is done + str \rv, [\tmp] + +#ifdef CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA + /* Check ODMDATA */ +10: movw \rp, #TEGRA_PMC_SCRATCH20 & 0xffff + movt \rp, #TEGRA_PMC_SCRATCH20 >> 16 + ldr \rp, [\rp, #0] @ Load PMC_SCRATCH20 + ubfx \rv, \rp, #18, #2 @ 19:18 are console type + cmp \rv, #2 @ 2 and 3 mean DCC, UART + beq 11f @ some boards swap the meaning + cmp \rv, #3 @ so accept either + bne 90f +11: ubfx \rv, \rp, #15, #3 @ 17:15 are UART ID + cmp \rv, #0 @ UART 0? + beq 20f + cmp \rv, #1 @ UART 1? + beq 21f + cmp \rv, #2 @ UART 2? + beq 22f + cmp \rv, #3 @ UART 3? + beq 23f + cmp \rv, #4 @ UART 4? + beq 24f + b 90f @ invalid +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTA) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART A validity */ +20: checkuart(\rp, \rv, L, 6, A) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTB) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART B validity */ +21: checkuart(\rp, \rv, L, 7, B) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTC) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART C validity */ +22: checkuart(\rp, \rv, H, 23, C) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTD) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART D validity */ +23: checkuart(\rp, \rv, U, 1, D) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTE) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART E validity */ +24: + checkuart(\rp, \rv, U, 2, E) +#endif + + /* No valid UART found */ +90: mov \rp, #0 + /* fall through */ + + /* Record whichever UART we chose */ +91: str \rp, [\tmp, #4] @ Store in tegra_uart_phys + cmp \rp, #0 @ Valid UART address? + bne 92f @ Yes, go process it + str \rp, [\tmp, #8] @ Store 0 in tegra_uart_virt + b 100f @ Done +92: and \rv, \rp, #0xffffff @ offset within 1MB section + add \rv, \rv, #UART_VIRTUAL_BASE + str \rv, [\tmp, #8] @ Store in tegra_uart_virt + movw \rv, #TEGRA_APB_MISC_GP_HIDREV & 0xffff + movt \rv, #TEGRA_APB_MISC_GP_HIDREV >> 16 + ldr \rv, [\rv, #0] @ Load HIDREV + ubfx \rv, \rv, #8, #8 @ 15:8 are SoC version + cmp \rv, #0x20 @ Tegra20? + moveq \rv, #0x75 @ Tegra20 divisor + movne \rv, #0xdd @ Tegra30 divisor + str \rv, [\tmp, #12] @ Save divisor to scratch + /* uart[UART_LCR] = UART_LCR_WLEN8 | UART_LCR_DLAB; */ + mov \rv, #UART_LCR_WLEN8 | UART_LCR_DLAB + str \rv, [\rp, #UART_LCR << UART_SHIFT] + /* uart[UART_DLL] = div & 0xff; */ + ldr \rv, [\tmp, #12] + and \rv, \rv, #0xff + str \rv, [\rp, #UART_DLL << UART_SHIFT] + /* uart[UART_DLM] = div >> 8; */ + ldr \rv, [\tmp, #12] + lsr \rv, \rv, #8 + str \rv, [\rp, #UART_DLM << UART_SHIFT] + /* uart[UART_LCR] = UART_LCR_WLEN8; */ + mov \rv, #UART_LCR_WLEN8 + str \rv, [\rp, #UART_LCR << UART_SHIFT] + b 100f + + .align +99: .word . + .word tegra_uart_config + .ltorg + + /* Load previously selected UART address */ +100: ldr \rp, [\tmp, #4] @ Load tegra_uart_phys + ldr \rv, [\tmp, #8] @ Load tegra_uart_virt + .endm + +/* + * Code below is swiped from <asm/hardware/debug-8250.S>, but add an extra + * check to make sure that the UART address is actually valid. + */ + + .macro senduart, rd, rx + cmp \rx, #0 + strneb \rd, [\rx, #UART_TX << UART_SHIFT] +1001: + .endm + + .macro busyuart, rd, rx + cmp \rx, #0 + beq 1002f +1001: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1001b +1002: + .endm + + .macro waituart, rd, rx +#ifdef FLOW_CONTROL + cmp \rx, #0 + beq 1002f +1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b +1002: +#endif + .endm diff --git a/arch/arm/mach-zynq/include/mach/debug-macro.S b/arch/arm/include/debug/zynq.S index 3ab0be1f619..f9aa9740a73 100644 --- a/ |