ext,misc: Update `ext/sst/README.md` for v21.2 release
Change-Id: I2cd982c819074962182da43754399852f9e72174
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/54703
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/ext/sst/README.md b/ext/sst/README.md
index 148adcc..dbec200 100644
--- a/ext/sst/README.md
+++ b/ext/sst/README.md
@@ -62,7 +62,7 @@
Downloading the built bootloader containing a Linux Kernel and a workload,
```sh
-wget http://dist.gem5.org/dist/develop/misc/riscv/bbl-busybox-boot-exit
+wget http://dist.gem5.org/dist/v21-2/misc/riscv/bbl-busybox-boot-exit
```
Running the simulation
@@ -78,7 +78,7 @@
`m5 exit` will be called upon the booting process reaching the early userspace.
More information about building a bootloader containing a Linux Kernel and a
customized workload is available at
-[https://gem5.googlesource.com/public/gem5-resources/+/refs/heads/develop/src/riscv-boot-exit-nodisk/].
+[https://gem5.googlesource.com/public/gem5-resources/+/refs/heads/stable/src/riscv-boot-exit-nodisk/].
## Running an example simulation (Arm)
@@ -87,7 +87,7 @@
directory):
```sh
-wget http://dist.gem5.org/dist/develop/arm/aarch-sst-20211207.tar.bz2
+wget http://dist.gem5.org/dist/v21-2/arm/aarch-sst-20211207.tar.bz2
tar -xf aarch-sst-20211207.tar.bz2
# copying bootloaders
