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author | Stephen Boyd <sboyd@codeaurora.org> | 2010-08-27 10:01:23 -0700 |
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committer | David Brown <davidb@codeaurora.org> | 2011-01-07 15:54:43 -0800 |
commit | 2a1eb58a86514037c8b59eb13a14b0e2a9cc0fb3 (patch) | |
tree | b67a0b1e4c480d717a1bc31122e75fb956fa45fa /arch/arm/mach-msm/scm.h | |
parent | e744070fd4ff9d3114277e52d77afa21579adce2 (diff) | |
download | op-kernel-dev-2a1eb58a86514037c8b59eb13a14b0e2a9cc0fb3.zip op-kernel-dev-2a1eb58a86514037c8b59eb13a14b0e2a9cc0fb3.tar.gz |
msm: Secure Channel Manager (SCM) support
SCM is the protocol used to communicate between the secure and
non-secure code executing on the applications processor. The
non-secure side uses a physically contiguous buffer to pass
information to the secure side; where the buffer conforms to a
format that is agreed upon by both sides. The use of a buffer
allows multiple pending requests to be in flight on the secure
side. It also benefits use cases where the command or response
buffer contains large chunks of data.
Reviewed-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
Diffstat (limited to 'arch/arm/mach-msm/scm.h')
-rw-r--r-- | arch/arm/mach-msm/scm.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/scm.h b/arch/arm/mach-msm/scm.h new file mode 100644 index 0000000..261786b --- /dev/null +++ b/arch/arm/mach-msm/scm.h @@ -0,0 +1,41 @@ +/* Copyright (c) 2010, Code Aurora Forum. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of Code Aurora Forum, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef __MACH_SCM_H +#define __MACH_SCM_H + +#define SCM_SVC_BOOT 0x1 +#define SCM_SVC_PIL 0x2 + +extern int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len, + void *resp_buf, size_t resp_len); + +#define SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF)) + +extern u32 scm_get_version(void); + +#endif |