ARM64: dts: meson-gx: Add firmware reserved memory zones
The Amlogic Meson GXBB/GXL/GXM secure monitor uses part of the memory space,
this patch adds these reserved zones.
Without such reserved memory zones, running the following stress command :
$ stress-ng --vm 16 --vm-bytes 128M --timeout 10s
multiple times:
Could lead to the following kernel crashes :
[ 46.937975] Bad mode in Error handler detected on CPU1, code 0xbf000000 -- SError
...
[ 47.058536] Internal error: Attempting to execute userspace memory: 8600000f [#3] PREEMPT SMP
...
Instead of the OOM killer.
Fixes: 4f24eda840
("ARM64: dts: Prepare configs for Amlogic Meson GXBaby")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
[khilman: added Fixes tag, added _reserved and unit addresses]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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@ -55,6 +55,24 @@
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#address-cells = <2>;
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#size-cells = <2>;
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reserved-memory {
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#address-cells = <2>;
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#size-cells = <2>;
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ranges;
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/* 16 MiB reserved for Hardware ROM Firmware */
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hwrom_reserved: hwrom@0 {
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reg = <0x0 0x0 0x0 0x1000000>;
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no-map;
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};
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/* 2 MiB reserved for ARM Trusted Firmware (BL31) */
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secmon_reserved: secmon@10000000 {
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reg = <0x0 0x10000000 0x0 0x200000>;
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no-map;
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};
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};
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cpus {
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#address-cells = <0x2>;
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#size-cells = <0x0>;
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