[PATCH 3/7] ARM: at91: introduce basic SAMA5D4 support

From: Alexandre Belloni
Date: Thu Sep 11 2014 - 11:56:24 EST

From: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>

Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
---
arch/arm/Kconfig.debug | 4 ++++
arch/arm/mach-at91/Kconfig | 18 ++++++++++++++++
arch/arm/mach-at91/Makefile | 1 +
arch/arm/mach-at91/board-dt-sama5.c | 19 ++++++++++++++++
arch/arm/mach-at91/generic.h | 4 ++++
arch/arm/mach-at91/include/mach/cpu.h | 9 ++++++++
arch/arm/mach-at91/include/mach/sama5d4.h | 35 ++++++++++++++++++++++++++++++
arch/arm/mach-at91/sama5d4.c | 36 +++++++++++++++++++++++++++++++
arch/arm/mach-at91/soc.h | 5 +++++
9 files changed, 131 insertions(+)
create mode 100644 arch/arm/mach-at91/include/mach/sama5d4.h
create mode 100644 arch/arm/mach-at91/sama5d4.c

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index b11ad54f8d17..7b44db208f10 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -101,6 +101,10 @@ choice
bool "Kernel low-level debugging on 9263 and 9g45"
depends on HAVE_AT91_DBGU1

+ config AT91_DEBUG_LL_DBGU2
+ bool "Kernel low-level debugging on sama5d4"
+ depends on HAVE_AT91_DBGU2
+
config DEBUG_BCM2835
bool "Kernel low-level debugging on BCM2835 PL011 UART"
depends on ARCH_BCM2835
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index a2c8ecb10730..0e11013fea76 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -12,6 +12,9 @@ config HAVE_AT91_DBGU0
config HAVE_AT91_DBGU1
bool

+config HAVE_AT91_DBGU2
+ bool
+
config AT91_USE_OLD_CLK
bool

@@ -104,6 +107,21 @@ config SOC_SAMA5D3
help
Select this if you are using one of Atmel's SAMA5D3 family SoC.
This support covers SAMA5D31, SAMA5D33, SAMA5D34, SAMA5D35, SAMA5D36.
+
+config SOC_SAMA5D4
+ bool "SAMA5D4 family"
+ select SOC_SAMA5
+ select HAVE_AT91_DBGU2
+ select CLKSRC_MMIO
+ select CACHE_L2X0
+ select CACHE_PL310
+ select HAVE_FB_ATMEL
+ select HAVE_AT91_UTMI
+ select HAVE_AT91_SMD
+ select HAVE_AT91_USB_CLK
+ select HAVE_AT91_H64MX
+ help
+ Select this if you are using one of Atmel's SAMA5D4 family SoC.
endif

if SOC_SAM_V4_V5
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 306c82b3d45c..82edd532c139 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_SOC_AT91SAM9N12) += at91sam9n12.o
obj-$(CONFIG_SOC_AT91SAM9X5) += at91sam9x5.o
obj-$(CONFIG_SOC_AT91SAM9RL) += at91sam9rl.o
obj-$(CONFIG_SOC_SAMA5D3) += sama5d3.o
+obj-$(CONFIG_SOC_SAMA5D4) += sama5d4.o

obj-$(CONFIG_ARCH_AT91RM9200) += at91rm9200_devices.o
obj-$(CONFIG_ARCH_AT91SAM9260) += at91sam9260_devices.o
diff --git a/arch/arm/mach-at91/board-dt-sama5.c b/arch/arm/mach-at91/board-dt-sama5.c
index 8c5814fa5325..3b43be41ddf8 100644
--- a/arch/arm/mach-at91/board-dt-sama5.c
+++ b/arch/arm/mach-at91/board-dt-sama5.c
@@ -20,6 +20,7 @@

#include <asm/setup.h>
#include <asm/irq.h>
+#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
@@ -35,8 +36,26 @@ static void __init sama5_dt_timer_init(void)
at91sam926x_pit_init();
}

+#ifdef CONFIG_CACHE_L2X0
+static void __init at91_init_l2cache(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache");
+ if (!np)
+ return;
+ of_node_put(np);
+
+ l2x0_of_init(0, ~0UL);
+}
+#else
+static inline void at91_init_l2cache(void) {}
+#endif
+
static void __init sama5_dt_device_init(void)
{
+ at91_init_l2cache();
+
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}

diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index f42b0490ad98..733ac0eef839 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -84,3 +84,7 @@ extern int __init at91_gpio_of_irq_setup(struct device_node *node,
struct device_node *parent);

extern u32 at91_get_extern_irq(void);
+
+/* Firmware */
+extern void atmel_firmware_init(void);
+extern bool atmel_firmware_is_registered(void);
diff --git a/arch/arm/mach-at91/include/mach/cpu.h b/arch/arm/mach-at91/include/mach/cpu.h
index 86c71debab5b..d77572e8cb15 100644
--- a/arch/arm/mach-at91/include/mach/cpu.h
+++ b/arch/arm/mach-at91/include/mach/cpu.h
@@ -86,6 +86,9 @@ enum at91_soc_type {
/* SAMA5D3 */
AT91_SOC_SAMA5D3,

+ /* SAMA5D4 */
+ AT91_SOC_SAMA5D4,
+
/* Unknown type */
AT91_SOC_UNKNOWN,
};
@@ -211,6 +214,12 @@ static inline int at91_soc_is_detected(void)
#define cpu_is_sama5d3() (0)
#endif

+#ifdef CONFIG_SOC_SAMA5D4
+#define cpu_is_sama5d4() (at91_soc_initdata.type == AT91_SOC_SAMA5D4)
+#else
+#define cpu_is_sama5d4() (0)
+#endif
+
/*
* Since this is ARM, we will never run on any AVR32 CPU. But these
* definitions may reduce clutter in common drivers.
diff --git a/arch/arm/mach-at91/include/mach/sama5d4.h b/arch/arm/mach-at91/include/mach/sama5d4.h
new file mode 100644
index 000000000000..af835e89d4c5
--- /dev/null
+++ b/arch/arm/mach-at91/include/mach/sama5d4.h
@@ -0,0 +1,35 @@
+/*
+ * Chip-specific header file for the SAMA5D4 family
+ *
+ * Copyright (C) 2013 Atmel Corporation,
+ * Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
+ *
+ * Common definitions.
+ * Based on SAMA5D4 datasheet.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef SAMA5D4_H
+#define SAMA5D4_H
+
+/*
+ * User Peripheral physical base addresses.
+ */
+#define SAMA5D4_BASE_AIC 0xfc06e000 /* (AIC non-secure) Base Address */
+#define SAMA5D4_BASE_USART3 0xfc00c000 /* (USART3 non-secure) Base Address */
+#define SAMA5D4_BASE_PMC 0xf0018000 /* (PMC) Base Address */
+#define SAMA5D4_BASE_MPDDRC 0xf0010000 /* (MPDDRC) Base Address */
+#define SAMA5D4_BASE_PIOD 0xfc068000 /* (PIOD) Base Address */
+#define SAMA5D4_BASE_PIOE 0xfc06d000 /* (PIOE) Base Address */
+
+/* Some other peripherals */
+#define SAMA5D4_BASE_SYS2 SAMA5D4_BASE_PIOD
+
+/*
+ * Internal Memory.
+ */
+#define SAMA5D4_NS_SRAM_BASE 0x00210000 /* Internal SRAM base address Non-Secure */
+#define SAMA5D4_NS_SRAM_SIZE (64 * SZ_1K) /* Internal SRAM size Non-Secure part (64Kb) */
+
+#endif
diff --git a/arch/arm/mach-at91/sama5d4.c b/arch/arm/mach-at91/sama5d4.c
new file mode 100644
index 000000000000..f81f11ed8deb
--- /dev/null
+++ b/arch/arm/mach-at91/sama5d4.c
@@ -0,0 +1,36 @@
+/*
+ * Chip-specific setup code for the SAMA5D4 family
+ *
+ * Copyright (C) 2013 Atmel Corporation,
+ * Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/clk/at91_pmc.h>
+
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <mach/sama5d4.h>
+#include <mach/cpu.h>
+#include <mach/hardware.h>
+
+#include "soc.h"
+#include "generic.h"
+#include "sam9_smc.h"
+
+/* --------------------------------------------------------------------
+ * Processor initialization
+ * -------------------------------------------------------------------- */
+
+static void __init sama5d4_map_io(void)
+{
+ at91_init_sram(0, SAMA5D4_NS_SRAM_BASE, SAMA5D4_NS_SRAM_SIZE);
+}
+
+AT91_SOC_START(sama5d4)
+ .map_io = sama5d4_map_io,
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/soc.h b/arch/arm/mach-at91/soc.h
index ab983f2cc7dd..85ecd8ad9c53 100644
--- a/arch/arm/mach-at91/soc.h
+++ b/arch/arm/mach-at91/soc.h
@@ -25,6 +25,7 @@ extern struct at91_init_soc at91sam9rl_soc;
extern struct at91_init_soc at91sam9x5_soc;
extern struct at91_init_soc at91sam9n12_soc;
extern struct at91_init_soc sama5d3_soc;
+extern struct at91_init_soc sama5d4_soc;

#define AT91_SOC_START(_name) \
struct at91_init_soc __initdata _name##_soc \
@@ -75,3 +76,7 @@ static inline int at91_soc_is_enabled(void)
#if !defined(CONFIG_SOC_SAMA5D3)
#define sama5d3_soc at91_boot_soc
#endif
+
+#if !defined(CONFIG_SOC_SAMA5D4)
+#define sama5d4_soc at91_boot_soc
+#endif
--
1.9.1

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