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arm: initial machine port for artpec-6 SoC

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Basic machine port for the Artpec-6 SoC from Axis
Communications.

Signed-off-by: Lars Persson <larper@axis.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Lars Persson 2016-02-11 17:06:19 +01:00 committed by Olof Johansson
parent 6ba1c64cd2
commit 590b460c3e
5 changed files with 96 additions and 0 deletions
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2
arch/arm/Kconfig
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@ -724,6 +724,8 @@ source "arch/arm/mach-mvebu/Kconfig"
source "arch/arm/mach-alpine/Kconfig"
source "arch/arm/mach-artpec/Kconfig"
source "arch/arm/mach-asm9260/Kconfig"
source "arch/arm/mach-at91/Kconfig"

1
arch/arm/Makefile
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@ -154,6 +154,7 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
# Machine directory name. This list is sorted alphanumerically
# by CONFIG_* macro name.
machine-$(CONFIG_ARCH_ALPINE) += alpine
machine-$(CONFIG_ARCH_ARTPEC) += artpec
machine-$(CONFIG_ARCH_AT91) += at91
machine-$(CONFIG_ARCH_AXXIA) += axxia
machine-$(CONFIG_ARCH_BCM) += bcm

20
arch/arm/mach-artpec/Kconfig Normal file
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@ -0,0 +1,20 @@
menuconfig ARCH_ARTPEC
bool "Axis Communications ARM based ARTPEC SoCs"
depends on ARCH_MULTI_V7
if ARCH_ARTPEC
config MACH_ARTPEC6
bool "Axis ARTPEC-6 ARM Cortex A9 Platform"
depends on ARCH_MULTI_V7
select ARM_AMBA
select ARM_GIC
select ARM_GLOBAL_TIMER
select ARM_PSCI
select HAVE_ARM_ARCH_TIMER
select HAVE_ARM_SCU
select HAVE_ARM_TWD if SMP
help
Support for Axis ARTPEC-6 ARM Cortex A9 Platform
endif

1
arch/arm/mach-artpec/Makefile Normal file
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@ -0,0 +1 @@
obj-$(CONFIG_MACH_ARTPEC6) := board-artpec6.o

72
arch/arm/mach-artpec/board-artpec6.c Normal file
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@ -0,0 +1,72 @@
/*
* ARTPEC-6 device support.
*
* 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/amba/bus.h>
#include <linux/clocksource.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/mfd/syscon.h>
#include <linux/of_platform.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/clk-provider.h>
#include <linux/regmap.h>
#include <linux/smp.h>
#include <asm/smp_scu.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/psci.h>
#include <linux/arm-smccc.h>
#define ARTPEC6_DMACFG_REGNUM 0x10
#define ARTPEC6_DMACFG_UARTS_BURST 0xff
#define SECURE_OP_L2C_WRITEREG 0xb4000001
static void __init artpec6_init_machine(void)
{
struct regmap *regmap;
regmap = syscon_regmap_lookup_by_compatible("axis,artpec6-syscon");
if (!IS_ERR(regmap)) {
/* Use PL011 DMA Burst Request signal instead of DMA
* Single Request
*/
regmap_write(regmap, ARTPEC6_DMACFG_REGNUM,
ARTPEC6_DMACFG_UARTS_BURST);
};
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static void artpec6_l2c310_write_sec(unsigned long val, unsigned reg)
{
struct arm_smccc_res res;
arm_smccc_smc(SECURE_OP_L2C_WRITEREG, reg, val, 0,
0, 0, 0, 0, &res);
WARN_ON(res.a0);
}
static const char * const artpec6_dt_match[] = {
"axis,artpec6",
NULL
};
DT_MACHINE_START(ARTPEC6, "Axis ARTPEC-6 Platform")
.l2c_aux_val = 0x0C000000,
.l2c_aux_mask = 0xF3FFFFFF,
.l2c_write_sec = artpec6_l2c310_write_sec,
.init_machine = artpec6_init_machine,
.dt_compat = artpec6_dt_match,
MACHINE_END