From a0d27c2c569c5afd6e9753f7508186b2e786d47b Mon Sep 17 00:00:00 2001
From: Conor Patrick <conorpp94@gmail.com>
Date: Fri, 22 Mar 2019 13:54:42 -0400
Subject: [PATCH] add memory layout commment, undo -8 simplification

---
 targets/stm32l432/linker/stm32l4xx.ld       | 8 +++++++-
 targets/stm32l432/linker/stm32l4xx_extra.ld | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/targets/stm32l432/linker/stm32l4xx.ld b/targets/stm32l432/linker/stm32l4xx.ld
index 9b010ed..4e43df7 100644
--- a/targets/stm32l432/linker/stm32l4xx.ld
+++ b/targets/stm32l432/linker/stm32l4xx.ld
@@ -12,9 +12,15 @@ _estack = 0x2000c000;
 
 _MIN_STACK_SIZE = 0x400;
 
+/*
+    Memory layout of device:
+        20 KB            198KB-8            38 KB
+    | bootloader |    application     |  secrets/data |
+ */
+
 MEMORY
 {
-    flash (rx)      : ORIGIN = 0x08005000, LENGTH = 190K
+    flash (rx)      : ORIGIN = 0x08005000, LENGTH = 198K - 8
     ram (xrw)       : ORIGIN = 0x20000000, LENGTH = 48K
     sram2 (rw)      : ORIGIN = 0x10000000, LENGTH = 16K
 }
diff --git a/targets/stm32l432/linker/stm32l4xx_extra.ld b/targets/stm32l432/linker/stm32l4xx_extra.ld
index e58b1c8..6948c90 100644
--- a/targets/stm32l432/linker/stm32l4xx_extra.ld
+++ b/targets/stm32l432/linker/stm32l4xx_extra.ld
@@ -14,7 +14,7 @@ _MIN_STACK_SIZE = 0x400;
 
 MEMORY
 {
-    flash (rx)      : ORIGIN = 0x08008000, LENGTH = 178K
+    flash (rx)      : ORIGIN = 0x08008000, LENGTH = 186K - 8
     ram (xrw)       : ORIGIN = 0x20000000, LENGTH = 48K
     sram2 (rw)      : ORIGIN = 0x10000000, LENGTH = 16K
 }