Merge #187

187: Add documentation describing `libtock-rs`'s unaudited third-party dependencies. r=jrvanwhy a=jrvanwhy

This document is required by [Tock's threat model](https://github.com/tock/tock/blob/master/doc/threat_model/Code_Review.md).

[Rendered](https://github.com/jrvanwhy/libtock-rs/blob/threat-model-doc/doc/Dependencies.md)

Co-authored-by: Johnathan Van Why <jrvanwhy@google.com>

Makefile

diff --git a/Makefile b/Makefile
index f1f6dd5..b7eef32 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@
 	@echo " - opentitan"
 	@echo " - hifive1"
 	@echo " - nrf52"
+	@echo " - apollo3"
 	@echo
 	@echo "Run 'make setup' to setup Rust to build libtock-rs."
 	@echo "Run 'make <board>' to build libtock-rs for that board"

boards/layout_opentitan.ld

diff --git a/boards/layout_opentitan.ld b/boards/layout_opentitan.ld
index db48eef..0ae4b60 100644
--- a/boards/layout_opentitan.ld
+++ b/boards/layout_opentitan.ld
@@ -10,7 +10,7 @@
    * the kernel binary, check for the actual address of APP_MEMORY!
    */
   FLASH (rx) : ORIGIN = 0x20030040, LENGTH = 32M
-  SRAM (rwx) : ORIGIN = 0x10002800, LENGTH = 512K
+  SRAM (rwx) : ORIGIN = 0x10002D00, LENGTH = 512K
 }
 
 /*

tools/flash.sh

diff --git a/tools/flash.sh b/tools/flash.sh
index f24127e..ea75dee 100755
--- a/tools/flash.sh
+++ b/tools/flash.sh
@@ -3,7 +3,7 @@
 set -eux
 
 artifact="$(basename $1)"
-rust_target_folder="$(readlink -f $(dirname $1)/../..)"
+rust_target_folder="$(cd $(dirname $1)/../.. && pwd -P)"
 if [ -z $APP_HEAP_SIZE ]; then
 	echo "Set APP_HEAP_SIZE to a value"
 	exit 1