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ARM: keystone: Add minimal TI Keystone platform support

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Texas Instruments Keystone family of multi-core devices are
based on ARM Cortex A15. Patch adds basic definitions for a
new Keystone sub-architecture in ARM.

The TCI66xxK2H Communications Infrastructure Keystone SoCs
are member of the C66x family based on TI's new KeyStone 2
multi-core SoC Architecture designed specifically for high
performance wireless and networking infrastructure applications.
The SOCs contains many subsystems like Cortex A15 ARM CorePacs,
C66XX DSP CorePacs, MSMC memory controller, Tera Net bus,
IP Network, Navigator, Hyperlink, 1G/10G Ethernet, Radio layers
and queue based communication systems.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: arm@kernel.org

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Santosh Shilimkar 2013-06-10 11:27:13 -04:00
parent d5e9fe8462
commit 828989ad87
9 changed files with 307 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
arch/arm/Kconfig
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@ -948,6 +948,8 @@ source "arch/arm/mach-iop13xx/Kconfig"
source "arch/arm/mach-ixp4xx/Kconfig"
source "arch/arm/mach-keystone/Kconfig"
source "arch/arm/mach-kirkwood/Kconfig"
source "arch/arm/mach-ks8695/Kconfig"
@ -1560,6 +1562,7 @@ config ARCH_NR_GPIO
int
default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
default 512 if SOC_OMAP5
default 512 if ARCH_KEYSTONE
default 392 if ARCH_U8500
default 352 if ARCH_VT8500
default 288 if ARCH_SUNXI

16
arch/arm/Kconfig.debug
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@ -251,6 +251,20 @@ choice
Say Y here if you want kernel low-level debugging support
on i.MX6Q/DL.
config DEBUG_KEYSTONE_UART0
bool "Kernel low-level debugging on KEYSTONE2 using UART0"
depends on ARCH_KEYSTONE
help
Say Y here if you want the debug print routines to direct
their output to UART0 serial port on KEYSTONE2 devices.
config DEBUG_KEYSTONE_UART1
bool "Kernel low-level debugging on KEYSTONE2 using UART1"
depends on ARCH_KEYSTONE
help
Say Y here if you want the debug print routines to direct
their output to UART1 serial port on KEYSTONE2 devices.
config DEBUG_MMP_UART2
bool "Kernel low-level debugging message via MMP UART2"
depends on ARCH_MMP
@ -632,6 +646,8 @@ config DEBUG_LL_INCLUDE
DEBUG_IMX51_UART || \
DEBUG_IMX53_UART ||\
DEBUG_IMX6Q_UART
default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \
DEBUG_KEYSTONE_UART1
default "debug/mvebu.S" if DEBUG_MVEBU_UART
default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART
default "debug/nomadik.S" if DEBUG_NOMADIK_UART

1
arch/arm/Makefile
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@ -194,6 +194,7 @@ machine-$(CONFIG_PLAT_SPEAR) += spear
machine-$(CONFIG_ARCH_VIRT) += virt
machine-$(CONFIG_ARCH_ZYNQ) += zynq
machine-$(CONFIG_ARCH_SUNXI) += sunxi
machine-$(CONFIG_ARCH_KEYSTONE) += keystone
# Platform directory name. This list is sorted alphanumerically
# by CONFIG_* macro name.

157
arch/arm/configs/keystone_defconfig Normal file
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@ -0,0 +1,157 @@
# CONFIG_SWAP is not set
CONFIG_POSIX_MQUEUE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_ELF_CORE is not set
# CONFIG_BASE_FULL is not set
CONFIG_EMBEDDED=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_ARCH_KEYSTONE=y
CONFIG_ARM_LPAE=y
CONFIG_SMP=y
CONFIG_PREEMPT=y
CONFIG_AEABI=y
CONFIG_HIGHMEM=y
CONFIG_VFP=y
CONFIG_NEON=y
# CONFIG_SUSPEND is not set
CONFIG_PM_RUNTIME=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=y
CONFIG_XFRM_USER=y
CONFIG_XFRM_SUB_POLICY=y
CONFIG_XFRM_STATISTICS=y
CONFIG_NET_KEY=y
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_NET_IPIP=y
CONFIG_NET_IPGRE_DEMUX=y
CONFIG_NET_IPGRE=y
CONFIG_IP_MROUTE=y
CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
CONFIG_IP_PIMSM_V2=y
CONFIG_INET_AH=y
CONFIG_INET_IPCOMP=y
CONFIG_IPV6=y
CONFIG_INET6_XFRM_MODE_TRANSPORT=m
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_IPV6_SIT=m
CONFIG_IPV6_MULTIPLE_TABLES=y
CONFIG_IPV6_SUBTREES=y
CONFIG_IPV6_MROUTE=y
CONFIG_IPV6_PIMSM_V2=y
CONFIG_NETFILTER=y
CONFIG_NF_CONNTRACK=y
CONFIG_NF_CT_NETLINK=y
CONFIG_NETFILTER_XT_TARGET_CLASSIFY=y
CONFIG_NETFILTER_XT_TARGET_CONNMARK=y
CONFIG_NETFILTER_XT_TARGET_IDLETIMER=y
CONFIG_NETFILTER_XT_TARGET_MARK=y
CONFIG_NETFILTER_XT_MATCH_COMMENT=y
CONFIG_NETFILTER_XT_MATCH_CONNBYTES=y
CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=y
CONFIG_NETFILTER_XT_MATCH_CONNMARK=y
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
CONFIG_NETFILTER_XT_MATCH_CPU=y
CONFIG_NETFILTER_XT_MATCH_IPRANGE=y
CONFIG_NETFILTER_XT_MATCH_LENGTH=y
CONFIG_NETFILTER_XT_MATCH_MAC=y
CONFIG_NETFILTER_XT_MATCH_MARK=y
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=y
CONFIG_NETFILTER_XT_MATCH_STATE=y
CONFIG_NF_CONNTRACK_IPV4=y
CONFIG_IP_NF_IPTABLES=y
CONFIG_IP_NF_MATCH_AH=y
CONFIG_IP_NF_MATCH_ECN=y
CONFIG_IP_NF_MATCH_TTL=y
CONFIG_IP_NF_FILTER=y
CONFIG_IP_NF_TARGET_REJECT=y
CONFIG_IP_NF_TARGET_ULOG=y
CONFIG_IP_NF_MANGLE=y
CONFIG_IP_NF_TARGET_CLUSTERIP=y
CONFIG_IP_NF_TARGET_ECN=y
CONFIG_IP_NF_TARGET_TTL=y
CONFIG_IP_NF_RAW=y
CONFIG_IP_NF_ARPTABLES=y
CONFIG_IP_NF_ARPFILTER=y
CONFIG_IP_NF_ARP_MANGLE=y
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP_SCTP=y
CONFIG_VLAN_8021Q=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_CMA=y
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_PLATRAM=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_NAND=y
CONFIG_MTD_UBI=y
CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_EEPROM_AT24=y
CONFIG_NETDEVICES=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
CONFIG_SPI=y
CONFIG_SPI_SPIDEV=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
# CONFIG_USB_SUPPORT is not set
CONFIG_DMADEVICES=y
CONFIG_COMMON_CLK_DEBUG=y
CONFIG_MEMORY=y
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_JFFS2_FS_WBUF_VERIFY=y
CONFIG_UBIFS_FS=y
CONFIG_CRAMFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_ROOT_NFS=y
CONFIG_NFSD=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V3_ACL=y
CONFIG_PRINTK_TIME=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_USER=y
CONFIG_CRYPTO_USER=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_AUTHENC=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CTR=y
CONFIG_CRYPTO_XCBC=y
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_ANSI_CPRNG=y
CONFIG_CRYPTO_USER_API_HASH=y
CONFIG_CRYPTO_USER_API_SKCIPHER=y

43
arch/arm/include/debug/keystone.S Normal file
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@ -0,0 +1,43 @@
/*
* Early serial debug output macro for Keystone SOCs
*
* Copyright 2013 Texas Instruments, Inc.
* Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* Based on RMKs low level debug code.
* Copyright (C) 1994-1999 Russell King
*
* 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/serial_reg.h>
#define UART_SHIFT 2
#if defined(CONFIG_DEBUG_KEYSTONE_UART0)
#define UART_PHYS 0x02530c00
#define UART_VIRT 0xfeb30c00
#elif defined(CONFIG_DEBUG_KEYSTONE_UART1)
#define UART_PHYS 0x02531000
#define UART_VIRT 0xfeb31000
#endif
.macro addruart, rp, rv, tmp
ldr \rv, =UART_VIRT @ physical base address
ldr \rp, =UART_PHYS @ virtual base address
.endm
.macro senduart,rd,rx
str \rd, [\rx, #UART_TX << UART_SHIFT]
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT]
and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
bne 1002b
.endm
.macro waituart,rd,rx
.endm

14
arch/arm/mach-keystone/Kconfig Normal file
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@ -0,0 +1,14 @@
config ARCH_KEYSTONE
bool "Texas Instruments Keystone Devices"
depends on ARCH_MULTI_V7
select CPU_V7
select ARM_GIC
select HAVE_ARM_ARCH_TIMER
select CLKSRC_MMIO
select GENERIC_CLOCKEVENTS
select HAVE_SCHED_CLOCK
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARM_ERRATA_798181
help
Support for boards based on the Texas Instruments Keystone family of
SoCs.

1
arch/arm/mach-keystone/Makefile Normal file
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@ -0,0 +1 @@
obj-y := keystone.o

1
arch/arm/mach-keystone/Makefile.boot Normal file
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@ -0,0 +1 @@
zreladdr-y := 0x80008000

71
arch/arm/mach-keystone/keystone.c Normal file
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@ -0,0 +1,71 @@
/*
* Keystone2 based boards and SOC related code.
*
* Copyright 2013 Texas Instruments, Inc.
* Cyril Chemparathy <cyril@ti.com>
* Santosh Shilimkar <santosh.shillimkar@ti.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*/
#include <linux/io.h>
#include <linux/of.h>
#include <linux/init.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <asm/setup.h>
#include <asm/mach/map.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#define PLL_RESET_WRITE_KEY_MASK 0xffff0000
#define PLL_RESET_WRITE_KEY 0x5a69
#define PLL_RESET BIT(16)
static void __iomem *keystone_rstctrl;
static void __init keystone_init(void)
{
struct device_node *node;
node = of_find_compatible_node(NULL, NULL, "ti,keystone-reset");
if (WARN_ON(!node))
pr_warn("ti,keystone-reset node undefined\n");
keystone_rstctrl = of_iomap(node, 0);
if (WARN_ON(!keystone_rstctrl))
pr_warn("ti,keystone-reset iomap error\n");
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char *keystone_match[] __initconst = {
"ti,keystone-evm",
NULL,
};
void keystone_restart(char mode, const char *cmd)
{
u32 val;
BUG_ON(!keystone_rstctrl);
/* Enable write access to RSTCTRL */
val = readl(keystone_rstctrl);
val &= PLL_RESET_WRITE_KEY_MASK;
val |= PLL_RESET_WRITE_KEY;
writel(val, keystone_rstctrl);
/* Reset the SOC */
val = readl(keystone_rstctrl);
val &= ~PLL_RESET;
writel(val, keystone_rstctrl);
}
DT_MACHINE_START(KEYSTONE, "Keystone")
.init_machine = keystone_init,
.dt_compat = keystone_match,
.restart = keystone_restart,
MACHINE_END