Add common interface to EC flash commands

ectool and burn_my_ec need to use the same lower-level interface to
the EC flash commands, rather than duplicating calling the low-level
flash read/write/erase commands.

This is a precursor to refactoring the low-level commands to support
SPI/STM32L in a follow-up CL.

BUG=chrome-os-partner:20571
BRANCH=none
TEST=in a root shell, burn_my_ec flashes both RO and RW EC code

Change-Id: I4c72690100d86dbff03b7dacc2fb248b571d3820
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/60266

1 files changed, 52 insertions, 0 deletions

diff --git a/util/ec_flash.h b/util/ec_flash.h
new file mode 100644
index 0000000000..68a40fe466
--- /dev/null
+++ b/util/ec_flash.h
@@ -0,0 +1,52 @@
+/* Copyright (c) 2013 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.
+ */
+
+#ifndef __CROS_EC_EC_FLASH_H
+#define __CROS_EC_EC_FLASH_H
+
+/**
+ * Read EC flash memory
+ *
+ * @param buf		Destination buffer
+ * @param offset	Offset in EC flash to read
+ * @param size		Number of bytes to read
+ *
+ * @return 0 if success, negative if error.
+ */
+int ec_flash_read(uint8_t *buf, int offset, int size);
+
+/**
+ * Verify EC flash memory
+ *
+ * @param buf		Source buffer to verify against EC flash
+ * @param offset	Offset in EC flash to check
+ * @param size		Number of bytes to check
+ *
+ * @return 0 if success, negative if error.
+ */
+int ec_flash_verify(const uint8_t *buf, int offset, int size);
+
+/**
+ * Write EC flash memory
+ *
+ * @param buf		Source buffer
+ * @param offset	Offset in EC flash to write
+ * @param size		Number of bytes to write
+ *
+ * @return 0 if success, negative if error.
+ */
+int ec_flash_write(const uint8_t *buf, int offset, int size);
+
+/**
+ * Erase EC flash memory
+ *
+ * @param offset	Offset in EC flash to erase
+ * @param size		Number of bytes to erase
+ *
+ * @return 0 if success, negative if error.
+ */
+int ec_flash_erase(int offset, int size);
+
+#endif