Re: [PATCH] arm64: dts: ti: k3-am64-main: Add SYSFW reserved ranges in OCRAM
From: Nishanth Menon <nm@ti.com>
Date: 2021-06-11 19:16:47
Also in:
linux-arm-kernel, lkml
On 19:36-20210609, Vignesh Raghavendra wrote:
Last 256K of OCRAM (256K@0x701c0000) is reserved for SYSFW usage. Hence add an entry in DT so that its not used for generic pool memory allocation.
Are you really sure?? I know that I had set a budget for 16K in sysfw when I did the memory split up for sysfw of which 16k is actually used. Not sure where this 256K bucket started off from.. am I missing something here?
quoted hunk ↗ jump to hunk
Without this certain drivers using SRAM as generic shared memory pool may end up being allocated memory from this range and will lead to boot time crash when the reserved range is accessed (due to firewall violation). Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> --- arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 4 ++++ 1 file changed, 4 insertions(+)diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi index f1c42ef05e52..77b88e536534 100644 --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi@@ -16,6 +16,10 @@ oc_sram: sram@70000000 { atf-sram@0 { reg = <0x0 0x1a000>; }; + + dmsc-sram@1c0000 { + reg = <0x1c0000 0x40000>;
+ };
};
gic500: interrupt-controller@1800000 {
--
2.31.1-- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D