Commit bba8e3f4 authored by Neil Armstrong's avatar Neil Armstrong Committed by Arnd Bergmann

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: 4f24eda8 ("ARM64: dts: Prepare configs for Amlogic Meson GXBaby")
Signed-off-by: Neil Armstrong's avatarNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: default avatarAndreas Färber <afaerber@suse.de>
[khilman: added Fixes tag, added _reserved and unit addresses]
Signed-off-by: default avatarKevin Hilman <khilman@baylibre.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent feb3cbea
......@@ -55,6 +55,24 @@
#address-cells = <2>;
#size-cells = <2>;
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
/* 16 MiB reserved for Hardware ROM Firmware */
hwrom_reserved: hwrom@0 {
reg = <0x0 0x0 0x0 0x1000000>;
no-map;
};
/* 2 MiB reserved for ARM Trusted Firmware (BL31) */
secmon_reserved: secmon@10000000 {
reg = <0x0 0x10000000 0x0 0x200000>;
no-map;
};
};
cpus {
#address-cells = <0x2>;
#size-cells = <0x0>;
......
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