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ARM: socfpga: initial support for Altera's SOCFPGA platform 

Adding core definitions for Altera's SOCFPGA ARM platform.
Mininum support for Altera's SOCFPGA Cyclone 5 hardware.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Reviewed-by: Pavel Machek <pavel@denx.de>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Dinh Nguyen 2012-07-18 16:07:18 -06:00 committed by Arnd Bergmann
parent 31a985f5bd
commit 66314223aa
16 changed files with 460 additions and 0 deletions
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10
MAINTAINERS
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@ -1111,6 +1111,16 @@ S: Supported
F: arch/arm/mach-shmobile/
F: drivers/sh/
ARM/SOCFPGA ARCHITECTURE
M: Dinh Nguyen <dinguyen@altera.com>
S: Maintained
F: arch/arm/mach-socfpga/
ARM/SOCFPGA CLOCK FRAMEWORK SUPPORT
M: Dinh Nguyen <dinguyen@altera.com>
S: Maintained
F: drivers/clk/socfpga/
ARM/TECHNOLOGIC SYSTEMS TS7250 MACHINE SUPPORT
M: Lennert Buytenhek <kernel@wantstofly.org>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)

19
arch/arm/Kconfig
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@ -250,6 +250,25 @@ choice
prompt "ARM system type"
default ARCH_VERSATILE
config ARCH_SOCFPGA
bool "Altera SOCFPGA family"
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARM_AMBA
select ARM_GIC
select CACHE_L2X0
select CLKDEV_LOOKUP
select COMMON_CLK
select CPU_V7
select DW_APB_TIMER
select DW_APB_TIMER_OF
select GENERIC_CLOCKEVENTS
select GPIO_PL061 if GPIOLIB
select HAVE_ARM_SCU
select SPARSE_IRQ
select USE_OF
help
This enables support for Altera SOCFPGA Cyclone V platform
config ARCH_INTEGRATOR
bool "ARM Ltd. Integrator family"
select ARM_AMBA

1
arch/arm/Makefile
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@ -187,6 +187,7 @@ machine-$(CONFIG_ARCH_VEXPRESS) := vexpress
machine-$(CONFIG_ARCH_VT8500) := vt8500
machine-$(CONFIG_ARCH_W90X900) := w90x900
machine-$(CONFIG_FOOTBRIDGE) := footbridge
machine-$(CONFIG_ARCH_SOCFPGA) := socfpga
machine-$(CONFIG_MACH_SPEAR1310) := spear13xx
machine-$(CONFIG_MACH_SPEAR1340) := spear13xx
machine-$(CONFIG_MACH_SPEAR300) := spear3xx

147
arch/arm/boot/dts/socfpga.dtsi Normal file
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@ -0,0 +1,147 @@
/*
* Copyright (C) 2012 Altera <www.altera.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/include/ "skeleton.dtsi"
/ {
#address-cells = <1>;
#size-cells = <1>;
aliases {
ethernet0 = &gmac0;
serial0 = &uart0;
serial1 = &uart1;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
compatible = "arm,cortex-a9";
device_type = "cpu";
reg = <0>;
next-level-cache = <&L2>;
};
cpu@1 {
compatible = "arm,cortex-a9";
device_type = "cpu";
reg = <1>;
next-level-cache = <&L2>;
};
};
intc: intc@fffed000 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
interrupt-controller;
reg = <0xfffed000 0x1000>,
<0xfffec100 0x100>;
};
soc {
#address-cells = <1>;
#size-cells = <1>;
compatible = "simple-bus";
device_type = "soc";
interrupt-parent = <&intc>;
ranges;
amba {
compatible = "arm,amba-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges;
pdma: pdma@ffe01000 {
compatible = "arm,pl330", "arm,primecell";
reg = <0xffe01000 0x1000>;
interrupts = <0 180 4>;
};
};
gmac0: stmmac@ff700000 {
compatible = "altr,socfpga-stmmac", "snps,dwmac-3.70a", "snps,dwmac";
reg = <0xff700000 0x2000>;
interrupts = <0 115 4>;
interrupt-names = "macirq";
mac-address = [00 00 00 00 00 00];/* Filled in by U-Boot */
phy-mode = "gmii";
};
L2: l2-cache@fffef000 {
compatible = "arm,pl310-cache";
reg = <0xfffef000 0x1000>;
interrupts = <0 38 0x04>;
cache-unified;
cache-level = <2>;
};
/* Local timer */
timer@fffec600 {
compatible = "arm,cortex-a9-twd-timer";
reg = <0xfffec600 0x100>;
interrupts = <1 13 0xf04>;
};
timer0: timer@ffc08000 {
compatible = "snps,dw-apb-timer-sp";
interrupts = <0 167 4>;
clock-frequency = <200000000>;
reg = <0xffc08000 0x1000>;
};
timer1: timer@ffc09000 {
compatible = "snps,dw-apb-timer-sp";
interrupts = <0 168 4>;
clock-frequency = <200000000>;
reg = <0xffc09000 0x1000>;
};
timer2: timer@ffd00000 {
compatible = "snps,dw-apb-timer-osc";
interrupts = <0 169 4>;
clock-frequency = <200000000>;
reg = <0xffd00000 0x1000>;
};
timer3: timer@ffd01000 {
compatible = "snps,dw-apb-timer-osc";
interrupts = <0 170 4>;
clock-frequency = <200000000>;
reg = <0xffd01000 0x1000>;
};
uart0: uart@ffc02000 {
compatible = "snps,dw-apb-uart";
reg = <0xffc02000 0x1000>;
clock-frequency = <7372800>;
interrupts = <0 162 4>;
reg-shift = <2>;
reg-io-width = <4>;
};
uart1: uart@ffc03000 {
compatible = "snps,dw-apb-uart";
reg = <0xffc03000 0x1000>;
clock-frequency = <7372800>;
interrupts = <0 163 4>;
reg-shift = <2>;
reg-io-width = <4>;
};
};
};

34
arch/arm/boot/dts/socfpga_cyclone5.dts Normal file
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@ -0,0 +1,34 @@
/*
* Copyright (C) 2012 Altera Corporation <www.altera.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/dts-v1/;
/include/ "socfpga.dtsi"
/ {
model = "Altera SOCFPGA Cyclone V";
compatible = "altr,socfpga-cyclone5";
chosen {
bootargs = "console=ttyS0,57600";
};
memory {
name = "memory";
device_type = "memory";
reg = <0x0 0x10000000>; /* 256MB */
};
};

83
arch/arm/configs/socfpga_defconfig Normal file
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@ -0,0 +1,83 @@
CONFIG_EXPERIMENTAL=y
CONFIG_SYSVIPC=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CGROUPS=y
CONFIG_CPUSETS=y
CONFIG_NAMESPACES=y
CONFIG_EMBEDDED=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_LBDAF is not set
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARCH_SOCFPGA=y
CONFIG_MACH_SOCFPGA_CYCLONE5=y
CONFIG_ARM_THUMBEE=y
# CONFIG_CACHE_L2X0 is not set
CONFIG_HIGH_RES_TIMERS=y
CONFIG_VMSPLIT_2G=y
CONFIG_NR_CPUS=2
CONFIG_AEABI=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_CMDLINE=""
CONFIG_VFP=y
CONFIG_NEON=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_NET_KEY=y
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=2
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_NETDEVICES=y
CONFIG_STMMAC_ETH=y
# CONFIG_STMMAC_PHY_ID_ZERO_WORKAROUND is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_AMBAKMI=y
CONFIG_LEGACY_PTY_COUNT=16
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=2
CONFIG_SERIAL_8250_RUNTIME_UARTS=2
CONFIG_SERIAL_8250_DW=y
# CONFIG_RTC_HCTOSYS is not set
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_NTFS_RW=y
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DETECT_HUNG_TASK=y
# CONFIG_SCHED_DEBUG is not set
CONFIG_DEBUG_INFO=y
CONFIG_ENABLE_DEFAULT_TRACERS=y
CONFIG_DEBUG_USER=y
CONFIG_XZ_DEC=y

5
arch/arm/mach-socfpga/Makefile Normal file
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@ -0,0 +1,5 @@
#
# Makefile for the linux kernel.
#
obj-y := socfpga.o

1
arch/arm/mach-socfpga/Makefile.boot Normal file
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@ -0,0 +1 @@
zreladdr-y := 0x00008000

16
arch/arm/mach-socfpga/include/mach/debug-macro.S Normal file
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@ -0,0 +1,16 @@
/*
* Copyright (C) 1994-1999 Russell King
* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
*
* 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.
*/
.macro addruart, rp, rv, tmp
mov \rp, #DEBUG_LL_UART_OFFSET
orr \rp, \rp, #0x00c00000
orr \rv, \rp, #0xfe000000 @ virtual base
orr \rp, \rp, #0xff000000 @ physical base
.endm

19
arch/arm/mach-socfpga/include/mach/timex.h Normal file
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@ -0,0 +1,19 @@
/*
* Copyright (C) 2003 ARM Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* 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
*/
#define CLOCK_TICK_RATE (50000000 / 16)

9
arch/arm/mach-socfpga/include/mach/uncompress.h Normal file
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@ -0,0 +1,9 @@
#ifndef __MACH_UNCOMPRESS_H
#define __MACH_UNCOMPRESS_H
#define putc(c)
#define flush()
#define arch_decomp_setup()
#define arch_decomp_wdog()
#endif

62
arch/arm/mach-socfpga/socfpga.c Normal file
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@ -0,0 +1,62 @@
/*
* Copyright (C) 2012 Altera Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/dw_apb_timer.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/gic.h>
#include <asm/mach/arch.h>
extern void socfpga_init_clocks(void);
const static struct of_device_id irq_match[] = {
{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
{}
};
static void __init gic_init_irq(void)
{
of_irq_init(irq_match);
}
static void socfpga_cyclone5_restart(char mode, const char *cmd)
{
/* TODO: */
}
static void __init socfpga_cyclone5_init(void)
{
l2x0_of_init(0, ~0UL);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
socfpga_init_clocks();
}
static const char *altera_dt_match[] = {
"altr,socfpga",
"altr,socfpga-cyclone5",
NULL
};
DT_MACHINE_START(SOCFPGA, "Altera SOCFPGA")
.init_irq = gic_init_irq,
.handle_irq = gic_handle_irq,
.timer = &dw_apb_timer,
.init_machine = socfpga_cyclone5_init,
.restart = socfpga_cyclone5_restart,
.dt_compat = altera_dt_match,
MACHINE_END

1
drivers/clk/Makefile
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@ -4,4 +4,5 @@ obj-$(CONFIG_COMMON_CLK) += clk.o clk-fixed-rate.o clk-gate.o \
clk-mux.o clk-divider.o clk-fixed-factor.o
# SoCs specific
obj-$(CONFIG_ARCH_MXS) += mxs/
obj-$(CONFIG_ARCH_SOCFPGA) += socfpga/
obj-$(CONFIG_PLAT_SPEAR) += spear/

1
drivers/clk/socfpga/Makefile Normal file
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@ -0,0 +1 @@
obj-y += clk.o

51
drivers/clk/socfpga/clk.c Normal file
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@ -0,0 +1,51 @@
/*
* Copyright (C) 2012 Altera Corporation <www.altera.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#define SOCFPGA_OSC1_CLK 10000000
#define SOCFPGA_MPU_CLK 800000000
#define SOCFPGA_MAIN_QSPI_CLK 432000000
#define SOCFPGA_MAIN_NAND_SDMMC_CLK 250000000
#define SOCFPGA_S2F_USR_CLK 125000000
void __init socfpga_init_clocks(void)
{
struct clk *clk;
clk = clk_register_fixed_rate(NULL, "osc1_clk", NULL, CLK_IS_ROOT, SOCFPGA_OSC1_CLK);
clk_register_clkdev(clk, "osc1_clk", NULL);
clk = clk_register_fixed_rate(NULL, "mpu_clk", NULL, CLK_IS_ROOT, SOCFPGA_MPU_CLK);
clk_register_clkdev(clk, "mpu_clk", NULL);
clk = clk_register_fixed_rate(NULL, "main_clk", NULL, CLK_IS_ROOT, SOCFPGA_MPU_CLK/2);
clk_register_clkdev(clk, "main_clk", NULL);
clk = clk_register_fixed_rate(NULL, "dbg_base_clk", NULL, CLK_IS_ROOT, SOCFPGA_MPU_CLK/2);
clk_register_clkdev(clk, "dbg_base_clk", NULL);
clk = clk_register_fixed_rate(NULL, "main_qspi_clk", NULL, CLK_IS_ROOT, SOCFPGA_MAIN_QSPI_CLK);
clk_register_clkdev(clk, "main_qspi_clk", NULL);
clk = clk_register_fixed_rate(NULL, "main_nand_sdmmc_clk", NULL, CLK_IS_ROOT, SOCFPGA_MAIN_NAND_SDMMC_CLK);
clk_register_clkdev(clk, "main_nand_sdmmc_clk", NULL);
clk = clk_register_fixed_rate(NULL, "s2f_usr_clk", NULL, CLK_IS_ROOT, SOCFPGA_S2F_USR_CLK);
clk_register_clkdev(clk, "s2f_usr_clk", NULL);
}

1
include/linux/dw_apb_timer.h
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@ -53,4 +53,5 @@ void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs);
extern struct sys_timer dw_apb_timer;
#endif /* __DW_APB_TIMER_H__ */