Add emulation for Exynos4210 Pseudo Random Number Generator which could
work on fixed seeds or with seeds provided by True Random Number
Generator block inside the SoC.
Implement only the fixed seeds part of it in polling mode (no
interrupts).
Emulation tested with two independent Linux kernel exynos-rng drivers:
1. New kcapi-rng interface (targeting Linux v4.12),
2. Old hwrng inteface
# echo "exynos" > /sys/class/misc/hw_random/rng_current
# dd if=/dev/hwrng of=/dev/null bs=1 count=16
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Message-id: 20170425180609.11004-1-krzk@kernel.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: wrapped a few overlong lines; more efficient implementation
of exynos4210_rng_seed_ready()]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Use a define for a9mpcore_priv device type name instead of hard-coded
string.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Bring some more readability by declaring local function variables: first
initialized ones and then the rest (with reversed-christmas-tree order).
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Before QOM-ifying the Exynos4 SoC model, move the DRAM initialization
from exynos4210.c to exynos4_boards.c because DRAM is board specific,
not SoC.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Exynos4210 has four SD/MMC controllers supporting:
- SD Standard Host Specification Version 2.0,
- MMC Specification Version 4.3,
- SDIO Card Specification Version 2.0,
- DMA and ADMA.
Add emulation of SDHCI devices which allows accessing storage through SD
cards. Differences from real hardware:
- Devices are shipped with eMMC memory, not SD card.
- The Exynos4210 SDHCI has few more registers, e.g. for
controlling the clocks, additional status (0x80, 0x84, 0x8c). These
are not implemented.
Testing on smdkc210 machine with "-drive file=FILE,if=sd,bus=0,index=2".
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Message-id: 20170422190709.8676-1-krzk@kernel.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The Exynos4210 has cluster ID 0x9 in its MPIDR register (raw value
0x8000090x). If this cluster ID is not provided, then Linux kernel
cannot map DeviceTree nodes to MPIDR values resulting in kernel
warning and lack of any secondary CPUs:
DT missing boot CPU MPIDR[23:0], fall back to default cpu_logical_map
...
smp: Bringing up secondary CPUs ...
smp: Brought up 1 node, 1 CPU
SMP: Total of 1 processors activated (24.00 BogoMIPS).
Provide a cluster ID so Linux will see proper MPIDR and will try to
bring the secondary CPU online.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Message-id: 20170226200142.31169-2-krzk@kernel.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Without any clock controller, the Linux kernel was hitting division by
zero during boot or with clk_summary:
[ 0.000000] [<c031054c>] (unwind_backtrace) from [<c030ba6c>] (show_stack+0x10/0x14)
[ 0.000000] [<c030ba6c>] (show_stack) from [<c05b2660>] (dump_stack+0x88/0x9c)
[ 0.000000] [<c05b2660>] (dump_stack) from [<c05b11a4>] (Ldiv0+0x8/0x10)
[ 0.000000] [<c05b11a4>] (Ldiv0) from [<c06ad1e0>] (samsung_pll45xx_recalc_rate+0x58/0x74)
[ 0.000000] [<c06ad1e0>] (samsung_pll45xx_recalc_rate) from [<c0692ec0>] (clk_register+0x39c/0x63c)
[ 0.000000] [<c0692ec0>] (clk_register) from [<c125d360>] (samsung_clk_register_pll+0x2e0/0x3d4)
[ 0.000000] [<c125d360>] (samsung_clk_register_pll) from [<c125d7e8>] (exynos4_clk_init+0x1b0/0x5e4)
[ 0.000000] [<c125d7e8>] (exynos4_clk_init) from [<c12335f4>] (of_clk_init+0x17c/0x210)
[ 0.000000] [<c12335f4>] (of_clk_init) from [<c1204700>] (time_init+0x24/0x2c)
[ 0.000000] [<c1204700>] (time_init) from [<c1200b2c>] (start_kernel+0x24c/0x38c)
[ 0.000000] [<c1200b2c>] (start_kernel) from [<4020807c>] (0x4020807c)
Provide stub for clock controller returning reset values for PLLs.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Message-id: 20170226200142.31169-1-krzk@kernel.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef. Since then, we've moved to include qemu/osdep.h
everywhere. Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h. That's in excess of
100KiB of crap most .c files don't actually need.
Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h. Include qapi/error.h in .c files that need it and don't
get it now. Include qapi-types.h in qom/object.h for uint16List.
Update scripts/clean-includes accordingly. Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h
comment quoted above similarly.
This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third. Unfortunately, the number depending on
qapi-types.h shrinks only a little. More work is needed for that one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.
This commit was created with scripts/clean-includes.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1449505425-32022-4-git-send-email-peter.maydell@linaro.org
Done with this Coccinelle semantic patch:
@@
type T;
identifier FUN, RET;
expression list ARGS;
expression ERR, EC;
@@
(
- T RET = FUN(ARGS, &ERR);
+ T RET = FUN(ARGS, &error_fatal);
|
- RET = FUN(ARGS, &ERR);
+ RET = FUN(ARGS, &error_fatal);
|
- FUN(ARGS, &ERR);
+ FUN(ARGS, &error_fatal);
)
- if (ERR != NULL) {
- error_report_err(ERR);
- exit(EC);
- }
This is actually a more elegant version of my initial semantic patch
by courtesy of Eduardo.
It leaves dead Error * variables behind, cleaned up manually.
Cc: qemu-arm@nongnu.org
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Symptom:
$ qemu-system-x86_64 -m 10000000
Unexpected error in ram_block_add() at /work/armbru/qemu/exec.c:1456:
upstream-qemu: cannot set up guest memory 'pc.ram': Cannot allocate memory
Aborted (core dumped)
Root cause: commit ef701d7 screwed up handling of out-of-memory
conditions. Before the commit, we report the error and exit(1), in
one place, ram_block_add(). The commit lifts the error handling up
the call chain some, to three places. Fine. Except it uses
&error_abort in these places, changing the behavior from exit(1) to
abort(), and thus undoing the work of commit 3922825 "exec: Don't
abort when we can't allocate guest memory".
The three places are:
* memory_region_init_ram()
Commit 4994653 (right after commit ef701d7) lifted the error
handling further, through memory_region_init_ram(), multiplying the
incorrect use of &error_abort. Later on, imitation of existing
(bad) code may have created more.
* memory_region_init_ram_ptr()
The &error_abort is still there.
* memory_region_init_rom_device()
Doesn't need fixing, because commit 33e0eb5 (soon after commit
ef701d7) lifted the error handling further, and in the process
changed it from &error_abort to passing it up the call chain.
Correct, because the callers are realize() methods.
Fix the error handling after memory_region_init_ram() with a
Coccinelle semantic patch:
@r@
expression mr, owner, name, size, err;
position p;
@@
memory_region_init_ram(mr, owner, name, size,
(
- &error_abort
+ &error_fatal
|
err@p
)
);
@script:python@
p << r.p;
@@
print "%s:%s:%s" % (p[0].file, p[0].line, p[0].column)
When the last argument is &error_abort, it gets replaced by
&error_fatal. This is the fix.
If the last argument is anything else, its position is reported. This
lets us check the fix is complete. Four positions get reported:
* ram_backend_memory_alloc()
Error is passed up the call chain, ultimately through
user_creatable_complete(). As far as I can tell, it's callers all
handle the error sanely.
* fsl_imx25_realize(), fsl_imx31_realize(), dp8393x_realize()
DeviceClass.realize() methods, errors handled sanely further up the
call chain.
We're good. Test case again behaves:
$ qemu-system-x86_64 -m 10000000
qemu-system-x86_64: cannot set up guest memory 'pc.ram': Cannot allocate memory
[Exit 1 ]
The next commits will repair the rest of commit ef701d7's damage.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1441983105-26376-3-git-send-email-armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Disables the CPU ARM_FEATURE_EL3 featuere on machine models that can be
configured to use Cortex-A9, Cortex-A15, and ARM1176 but don't officially
support EL3. This preserves backwards compatibility.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1418684992-8996-15-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add parameter errp to memory_region_init_ram and update all call sites
to pass in &error_abort.
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Set the reset-cbar property of the Exynos4210 SoC's Cortex-A9
CPUs, so that Linux doesn't misrecognize them as a broken
uniprocessor SoC.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1394462692-8871-4-git-send-email-peter.maydell@linaro.org
Drop the now-deprecated arm_pic_init_cpu() in favour of directly
getting the IRQ line from the ARMCPU object.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1375977856-25046-4-git-send-email-peter.maydell@linaro.org
Even if we do not register newly created RAM MemoryRegion for migration with
vmstate_register_ram_global() function, ram_save_setup() still saves this region
to snapshot file with empty idstr=="". Consequently this results in error during
VM loading in ram_load().
Register rom_mem for migration.
Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com>
Message-id: 1368199981-45292-3-git-send-email-i.mitsyanko@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Exynos SoC was misusing memory_region_init_ram_ptr(): this interface can safely
be used only for memory regions which size is a multiple of target page size.
Change chipid_and_omr memory to an mmio region to fix this.
Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com>
Message-id: 1368199981-45292-2-git-send-email-i.mitsyanko@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The recent rearrangement of include files had some minor errors:
devices.h is not ARM specific and should not be in arm/
arm.h should be in arm/
Move these two headers to correct this.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Many of these should be cleaned up with proper qdev-/QOM-ification.
Right now there are many catch-all headers in include/hw/ARCH depending
on cpu.h, and this makes it necessary to compile these files per-target.
However, fixing this does not belong in these patches.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
