[PATCH v5] ARM: new platform for Energy Micro's EFM32 Cortex-M3 SoCs
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Tue Dec 10 11:55:16 EST 2013
There are still some missing parts (e.g. board support, device trees),
but with these bits added on top of this patch I can successfully boot a
EFM32GG-DK3750 board that uses an EFM32GG990F1024.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
Hello,
I'd like to get this patch in for 3.14. The latest submission (v4,
Message-Id:1383562853-17202-4-git-send-email-u.kleine-koenig at pengutronix.de)
had some strict dependencies:
- http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1
to be able to drop Makefile.boot, this is still in Status=Incoming in
rmk's patch tracker.
- http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7890/1
to be able to drop the unused <mach/entry-macro.S>. This is already
applied by rmk in his for-next branch, so it's not stable yet.
- My series to drop <mach/timex.h> for !MULTI_PLATFORM. I'll send a
pull request for that soon.
- Patch "clocksource: time-efm32: Select CLKSRC_MMIO". This is part of
a pull request by Daniel Lezcano that is expected to hit Linus T.'s
tree for the next -rc. It currently sits as
4ff3774e451fefb1781638c76230b3cf9a206b92 in Daniel's tree at
git://git.linaro.org/people/daniel.lezcano/linux.git clockevents/fixes
.
To make application a bit easier I added dummy files to drop the
dependencies on the first three items of the list above.
So it would be great if you could apply this patch when 4ff3774e4 went
in. (In case you want to apply it already now, this last dependency
could be work arounded, too, by adding a "select CLKSRC_MMIO" to
ARCH_EFM32.)
Other than that the only change since v4 is that I mention the exact
board/processor combo in the changelog now.
Thanks for considering this patch, best regards
Uwe
arch/arm/Kconfig | 19 ++++-
arch/arm/Makefile | 1 +
arch/arm/configs/efm32_defconfig | 102 +++++++++++++++++++++++++
arch/arm/mach-efm32/Makefile | 1 +
arch/arm/mach-efm32/Makefile.boot | 3 +
arch/arm/mach-efm32/dtmachine.c | 15 ++++
arch/arm/mach-efm32/include/mach/entry-macro.S | 4 +
arch/arm/mach-efm32/include/mach/timex.h | 3 +
8 files changed, 147 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/configs/efm32_defconfig
create mode 100644 arch/arm/mach-efm32/Makefile
create mode 100644 arch/arm/mach-efm32/Makefile.boot
create mode 100644 arch/arm/mach-efm32/dtmachine.c
create mode 100644 arch/arm/mach-efm32/include/mach/entry-macro.S
create mode 100644 arch/arm/mach-efm32/include/mach/timex.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c1f1a7e..38ed5a9 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -410,6 +410,23 @@ config ARCH_EBSA110
Ethernet interface, two PCMCIA sockets, two serial ports and a
parallel port.
+config ARCH_EFM32
+ bool "Energy Micro efm32"
+ depends on !MMU
+ select ARCH_REQUIRE_GPIOLIB
+ select ARM_NVIC
+ select CLKSRC_OF
+ select COMMON_CLK
+ select CPU_V7M
+ select GENERIC_CLOCKEVENTS
+ select NO_DMA
+ select NO_IOPORT
+ select SPARSE_IRQ
+ select USE_OF
+ help
+ Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
+ processors.
+
config ARCH_EP93XX
bool "EP93xx-based"
select ARCH_HAS_HOLES_MEMORYMODEL
@@ -1799,7 +1816,7 @@ config FORCE_MAX_ZONEORDER
int "Maximum zone order" if ARCH_SHMOBILE
range 11 64 if ARCH_SHMOBILE
default "12" if SOC_AM33XX
- default "9" if SA1111
+ default "9" if SA1111 || ARCH_EFM32
default "11"
help
The kernel memory allocator divides physically contiguous memory
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index c99b108..6da9abb 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -153,6 +153,7 @@ machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
machine-$(CONFIG_ARCH_DAVINCI) += davinci
machine-$(CONFIG_ARCH_DOVE) += dove
machine-$(CONFIG_ARCH_EBSA110) += ebsa110
+machine-$(CONFIG_ARCH_EFM32) += efm32
machine-$(CONFIG_ARCH_EP93XX) += ep93xx
machine-$(CONFIG_ARCH_EXYNOS) += exynos
machine-$(CONFIG_ARCH_GEMINI) += gemini
diff --git a/arch/arm/configs/efm32_defconfig b/arch/arm/configs/efm32_defconfig
new file mode 100644
index 0000000..f59fffb
--- /dev/null
+++ b/arch/arm/configs/efm32_defconfig
@@ -0,0 +1,102 @@
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_LOG_BUF_SHIFT=12
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_UID16 is not set
+# CONFIG_BASE_FULL is not set
+# CONFIG_FUTEX is not set
+# CONFIG_EPOLL is not set
+# CONFIG_SIGNALFD is not set
+# CONFIG_EVENTFD is not set
+# CONFIG_AIO is not set
+CONFIG_EMBEDDED=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+# CONFIG_SLUB_DEBUG is not set
+# 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_MMU is not set
+CONFIG_ARCH_EFM32=y
+# CONFIG_KUSER_HELPERS is not set
+CONFIG_SET_MEM_PARAM=y
+CONFIG_DRAM_BASE=0x88000000
+CONFIG_DRAM_SIZE=0x00400000
+CONFIG_FLASH_MEM_BASE=0x8c000000
+CONFIG_FLASH_SIZE=0x01000000
+CONFIG_PREEMPT=y
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_XIP_KERNEL=y
+CONFIG_XIP_PHYS_ADDR=0x8c000000
+CONFIG_BINFMT_FLAT=y
+CONFIG_BINFMT_SHARED_FLAT=y
+# CONFIG_COREDUMP is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+# CONFIG_INET_DIAG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_FW_LOADER is not set
+CONFIG_MTD=y
+CONFIG_MTD_BLOCK_RO=y
+CONFIG_MTD_ROM=y
+CONFIG_MTD_UCLINUX=y
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_BLK_DEV is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_CADENCE is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_CIRRUS is not set
+# CONFIG_NET_VENDOR_FARADAY is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+CONFIG_KS8851=y
+# CONFIG_NET_VENDOR_MICROCHIP is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SMSC is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_WLAN is not set
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_UNIX98_PTYS is not set
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_SERIAL_NONSTANDARD=y
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_EFM32_UART=y
+CONFIG_SERIAL_EFM32_UART_CONSOLE=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_SPI=y
+CONFIG_SPI_EFM32=y
+CONFIG_GPIO_SYSFS=y
+# CONFIG_USB_SUPPORT is not set
+CONFIG_MMC=y
+CONFIG_MMC_SPI=y
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_EXT2_FS=y
+# CONFIG_FILE_LOCKING is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY_USER is not set
+CONFIG_ROMFS_FS=y
+CONFIG_ROMFS_BACKED_BY_MTD=y
+# CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_PRINTK_TIME=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+# CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
+# CONFIG_FTRACE is not set
diff --git a/arch/arm/mach-efm32/Makefile b/arch/arm/mach-efm32/Makefile
new file mode 100644
index 0000000..3a74af7
--- /dev/null
+++ b/arch/arm/mach-efm32/Makefile
@@ -0,0 +1 @@
+obj-y += dtmachine.o
diff --git a/arch/arm/mach-efm32/Makefile.boot b/arch/arm/mach-efm32/Makefile.boot
new file mode 100644
index 0000000..eacfc3f
--- /dev/null
+++ b/arch/arm/mach-efm32/Makefile.boot
@@ -0,0 +1,3 @@
+# Empty file waiting for deletion once Makefile.boot isn't needed any more.
+# Patch waits for application at
+# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
diff --git a/arch/arm/mach-efm32/dtmachine.c b/arch/arm/mach-efm32/dtmachine.c
new file mode 100644
index 0000000..2367495
--- /dev/null
+++ b/arch/arm/mach-efm32/dtmachine.c
@@ -0,0 +1,15 @@
+#include <linux/kernel.h>
+
+#include <asm/v7m.h>
+
+#include <asm/mach/arch.h>
+
+static const char *const efm32gg_compat[] __initconst = {
+ "efm32,dk3750",
+ NULL
+};
+
+DT_MACHINE_START(EFM32DT, "EFM32 (Device Tree Support)")
+ .dt_compat = efm32gg_compat,
+ .restart = armv7m_restart,
+MACHINE_END
diff --git a/arch/arm/mach-efm32/include/mach/entry-macro.S b/arch/arm/mach-efm32/include/mach/entry-macro.S
new file mode 100644
index 0000000..322159d
--- /dev/null
+++ b/arch/arm/mach-efm32/include/mach/entry-macro.S
@@ -0,0 +1,4 @@
+/*
+ * Empty file waiting for deletion once <mach/entry-macro.S> isn't needed any
+ * more. Patch "ARM: v7-M: drop using mach/entry-macro.S" sitting in next.
+ */
diff --git a/arch/arm/mach-efm32/include/mach/timex.h b/arch/arm/mach-efm32/include/mach/timex.h
new file mode 100644
index 0000000..7a8b26d
--- /dev/null
+++ b/arch/arm/mach-efm32/include/mach/timex.h
@@ -0,0 +1,3 @@
+/*
+ * Empty file waiting for deletion once <mach/timex.h> isn't needed any more.
+ */
--
1.8.4.4
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