zephyr: Add the beginnings of a shim for flash access

Add myriad Kconfig options to make the flash code compile. This does
not yet do anything useful, as we need to connect up to the Zephyr
flash device (and need support for this in the npcx too).

BUG=b:174873770
BRANCH=none
TEST=build for volteer

Change-Id: Ib4bed4cdd39cdf33a1d27b39aadb89df491941b3
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2575208

1 files changed, 39 insertions, 0 deletions

diff --git a/zephyr/shim/src/flash.c b/zephyr/shim/src/flash.c
new file mode 100644
index 0000000000..83d210f270
--- /dev/null
+++ b/zephyr/shim/src/flash.c
@@ -0,0 +1,39 @@
+/* Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <flash.h>
+#include <kernel.h>
+
+/* TODO(b/174873770): Add calls to Zephyr code here */
+
+int flash_physical_write(int offset, int size, const char *data)
+{
+	return -ENOSYS;
+}
+
+int flash_physical_erase(int offset, int size)
+{
+	return -ENOSYS;
+}
+
+int flash_physical_get_protect(int bank)
+{
+	return -ENOSYS;
+}
+
+uint32_t flash_physical_get_protect_flags(void)
+{
+	return -ENOSYS;
+}
+
+int flash_physical_protect_at_boot(uint32_t new_flags)
+{
+	return -ENOSYS;
+}
+
+int flash_physical_protect_now(int all)
+{
+	return -ENOSYS;
+}