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| author | Randall Spangler <rspangler@chromium.org> | 2012-02-15 15:05:35 -0800 |
|---|---|---|
| committer | Randall Spangler <rspangler@chromium.org> | 2012-02-15 15:12:03 -0800 |
| commit | 6101cebb6a7b0d0aadf3df98e98284b60946c419 (patch) | |
| tree | 783e01e66a0f38875db5de873cd07aeba1953930 /include/lpc.h | |
| parent | c160dae1d45ea1a02e17b5de75e75a396b160627 (diff) | |
| download | chrome-ec-6101cebb6a7b0d0aadf3df98e98284b60946c419.tar.gz | |
Reduce LPC command parameters to 128 bytes; add LPC memory-mapped space
This will allow more efficient access to EC-provided data (temperature,
fan, battery) by the main processor.
Signed-off-by: Randall Spangler <rspangler@chromium.org>
BUG=chrome-os-partner:7857
TEST='ectool hello' from link main processor should still work
Change-Id: I2dc683f3441b34de9fb4debf772e386b9fdcfa82
Diffstat (limited to 'include/lpc.h')
| -rw-r--r-- | include/lpc.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/lpc.h b/include/lpc.h index d87d9bab7c..69968dba99 100644 --- a/include/lpc.h +++ b/include/lpc.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. +/* Copyright (c) 2012 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. */ @@ -27,6 +27,10 @@ int lpc_init(void); * commands, 1 for usermode-originated commands. */ uint8_t *lpc_get_host_range(int slot); +/* Returns a pointer to the memory-mapped buffer. This buffer is writable at + * any time, and the host can read it at any time. */ +uint8_t *lpc_get_memmap_range(void); + /* Sends a response to a host command. The bottom 4 bits of <status> * are sent in the status byte. <slot> is 0 for kernel-originated * commands, 1 for usermode-originated commands. */ |