This makes it possible to enable the Exynos platform as part of a
multiplatform kernel.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Instead of repeating the Kconfig entries for every SoC,
move them under ARCH_EXYNOS3, 4 and 5 and move the entries
common to 3, 4 and 5 under ARCH_EXYNOS.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch fix the offset of CPU boot address and don't
need to send smc call of SMC_CMD_CPU1BOOT command for
secondary CPU boot because Exynos3250 removes WFE in
secure mode.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch add Exynos3250's SoC ID. Exynos 3250 is SoC that
is based on the 32-bit RISC processor for Smartphone.
Exynos3250 uses Cortex-A7 dual cores and has a target speed
of 1.0GHz.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Exynos5800 is an octa core SoC which is based on the 5420
platform. This patch adds the basic support for it in the
mach-exynos.
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch add basic arch side support for exynos5260 SoC.
Note that this is required to enable build for clock driver.
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The vbus-supply property is wrongly updated in the
usbdrd node instead of the usbdrd_phy node. This patch
fixes the same.
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The vbus-supply property is wrongly updated in the
usbdrd node instead of the usbdrd_phy node. This patch
fixes the same.
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Most of the nodes of exynos5420 remains same for exynos5800.
So the exynos5420.dtsi is included in exynos5800 and the changed
node properties will be overriden.
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The patch adds the dts file for xyref5260 board which
is based on exynos5260 SoC.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Key code macros improve readability on exnos4210-origen,
exynos4412-origen and exynos5250-arndale boards.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
[kgene.kim@samsung.com: squashed similar two patches]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Enabled RTC and WDT nodes on exynos4210-origen and
exynos4412-origen boards.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
[kgene.kim@samsung.com: squashed similar two patches]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Call pcie_bus_configure_settings() on ARM, like for other platforms.
pcie_bus_configure_settings() makes sure the MPS across the bus is uniform
and provides the ability to tune the MRSS and MPS to higher performance
values. This is particularly important for embedded where there is no
firmware to program these PCIe settings for the OS.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Russell King <linux@arm.linux.org.uk>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
CC: Santosh Shilimkar <santosh.shilimkar@ti.com>
On platforms implementing CPU power management, the CPUidle subsystem
can allow CPUs to enter idle states where local timers logic is lost on power
down. To keep the software timers functional the kernel relies on an
always-on broadcast timer to be present in the platform to relay the
interrupt signalling the timer expiries.
For platforms implementing CPU core gating that do not implement an always-on
HW timer or implement it in a broken way, this patch adds code to initialize
the kernel hrtimer based clock event device upon boot (which can be chosen as
tick broadcast device by the kernel).
It relies on a dynamically chosen CPU to be always powered-up. This CPU then
relays the timer interrupt to CPUs in deep-idle states through its HW local
timer device.
Having a CPU always-on has implications on power management platform
capabilities and makes CPUidle suboptimal, since at least a CPU is kept
always in a shallow idle state by the kernel to relay timer interrupts,
but at least leaves the kernel with a functional system with some working
power management capabilities.
The hrtimer based clock event device is unconditionally registered, but
has the lowest possible rating such that any broadcast-capable HW clock
event device present will be chosen in preference as the tick broadcast
device.
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Merge "Renesas ARM Based SoC Fixes for v3.16" from Simon Horman:
This corrects a bug that will be introduced in v3.15.
The bug causes audio playback to fail on the Armadillo800 EVA board.
* tag 'renesas-fixes-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: armadillo800eva: fixup HDMI sound flags setting
Signed-off-by: Olof Johansson <olof@lixom.net>
Update to commit 9c9b415c50 [MIPS:
Reimplement get_cycles().]
On systems were for whatever reasons we can't use the cycle counter, fall
back to the c0_random register as an entropy source. It has however a
very small range that makes it suitable for random_get_entropy only and
not get_cycles.
This optimised version compiles to 8 instructions in the fast path even in
the worst case of all the conditions to check being variable (including a
MFC0 move delay slot that is only required for very old processors):
828: 8cf90000 lw t9,0(a3)
828: R_MIPS_LO16 jiffies
82c: 40057800 mfc0 a1,c0_prid
830: 3c0200ff lui v0,0xff
834: 00a21024 and v0,a1,v0
838: 1040007d beqz v0,a30 <add_interrupt_randomness+0x22c>
83c: 3c030000 lui v1,0x0
83c: R_MIPS_HI16 cpu_data
840: 40024800 mfc0 v0,c0_count
844: 00000000 nop
848: 00409021 move s2,v0
84c: 8ce20000 lw v0,0(a3)
84c: R_MIPS_LO16 jiffies
On most targets the sequence will be shorter and on some it will reduce to
a single `MFC0 <reg>,c0_count', as all MIPS architecture (i.e. non-legacy
MIPS) processors require the CP0 Count register to be present.
The only known exception that reports MIPS architecture compliance, but
contrary to that lacks CP0 Count is the Ingenic JZ4740 thingy. For broken
platforms like that this code requires cpu_has_counter to be hardcoded to
0 (i.e. no variable setting is permitted) so as not to penalise all the
other good platforms out there.
The asm barrier is required so that the compiler does not pull any
potentially costly (cold cache!) `cpu_data' variable access into the fast
path.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: John Crispin <blogic@openwrt.org>
Cc: Andrew McGregor <andrewmcgr@gmail.com>
Cc: Dave Taht <dave.taht@bufferbloat.net>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Simon Kelley <simon@thekelleys.org.uk>
Cc: Jim Gettys <jg@freedesktop.org>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6702/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This adds initial support for BPF-JIT on MIPS
Tested on mips32 LE/BE and mips64 BE/n64 using
dhcp, ping and various tcpdump filters.
Benchmarking:
Assuming the remote MIPS target uses 192.168.154.181
as its IP address, and the local host uses 192.168.154.136,
the following results can be obtained using the following
tcpdump filter (catches no frames) and a simple
'time ping -f -c 1000000' command.
[root@(none) ~]# tcpdump -p -n -s 0 -i eth0 net 10.0.0.0/24 -d
(000) ldh [12]
(001) jeq #0x800 jt 2 jf 8
(002) ld [26]
(003) and #0xffffff00
(004) jeq #0xa000000 jt 16 jf 5
(005) ld [30]
(006) and #0xffffff00
(007) jeq #0xa000000 jt 16 jf 17
(008) jeq #0x806 jt 10 jf 9
(009) jeq #0x8035 jt 10 jf 17
(010) ld [28]
(011) and #0xffffff00
(012) jeq #0xa000000 jt 16 jf 13
(013) ld [38]
(014) and #0xffffff00
(015) jeq #0xa000000 jt 16 jf 17
(016) ret #65535
- BPF-JIT Disabled
real 1m38.005s
user 0m1.510s
sys 0m6.710s
- BPF-JIT Enabled
real 1m35.215s
user 0m1.200s
sys 0m4.140s
[ralf@linux-mips.org: Resolved conflict.]
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
