On Thu, Aug 05, 2021 at 12:26:57PM -0700, Tianon Gravi wrote:
> > On 2021-07-30, Adam Borowski wrote:
> > > The Unmatched has 16GB memory -- which works fine with the vendor u-boot
> > > it shipped with. Alas, with Debian u-boot from experimental, only 8GB is
> > > visible (at 0x0000000080000000-0x000000027fffffff).
> I think it must be related to the combination of newer
> u-boot and new (upstream) kernel?
In -next there's:
commit d09560435cb712c9ec1e62b8a43a79b0af69fe77
Author: Qiu Wenbo <qiuwe...@kylinos.com.cn>
Date: Sun Jul 4 16:34:41 2021 +0800
riscv: dts: fix memory size for the SiFive HiFive Unmatched
The production version of HiFive Unmatched have 16GB memory.
Signed-off-by: Qiu Wenbo <qiuwe...@kylinos.com.cn>
Signed-off-by: Palmer Dabbelt <palmerdabb...@google.com>
--- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
@@ -24,7 +24,7 @@ cpus {
memory@80000000 {
device_type = "memory";
- reg = <0x0 0x80000000 0x2 0x00000000>;
+ reg = <0x0 0x80000000 0x4 0x00000000>;
};
soc {
Applying that gives me the full memory back.
> davidlt sent the following note on IRC, which I think is related:
>
> | <davidlt> tianon, the current DT was written for a different
> revision board (A00) pre-production
> | <davidlt> tianon, I hope to send out a new DT for 3A0 and 3B0 boards
Somehow, that kernel patch applies to -a00.dts, without distinguishing
board revisions.
Meow!
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