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x86, galileo: Add sample non-driver protection domain

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This patch adds a simple non-driver protection domain sample to serve
as an example for defining other non-driver protection domains.  It
simply performs a ping-pong test of protection domain switching
latency during boot, including optional accesses to a private metadata
region, and prints out the results.
This commit is contained in:
Michael LeMay 2015-08-09 16:38:04 -07:00
parent e0aefd11d9
commit 73774def6b
8 changed files with 243 additions and 1 deletions
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4
cpu/x86/quarkX1000.ld
View file

@ -63,6 +63,10 @@ SECTIONS {
{
*(.rodata*)
_sdata_kern_startup_func = .;
KEEP(*(.kern_startup_func))
_edata_kern_startup_func = .;
_sdata_shared_isr = .;
KEEP(*(.shared_isr_data*))
_edata_shared_isr = .;

4
cpu/x86/quarkX1000_multi_seg.ld
View file

@ -119,6 +119,10 @@ SECTIONS {
*(.rodata*)
*(.data*)
_sdata_kern_startup_func = .;
KEEP(*(.kern_startup_func))
_edata_kern_startup_func = .;
/*
These could alternatively be treated as read-only data to prevent tampering
from the user privilege level.

4
cpu/x86/quarkX1000_paging.ld
View file

@ -128,6 +128,10 @@ SECTIONS {
*(.rodata*)
*(.data*)
_sdata_kern_startup_func = .;
KEEP(*(.kern_startup_func))
_edata_kern_startup_func = .;
/*
These could alternatively be treated as read-only data to prevent tampering
from the user privilege level.

46
cpu/x86/startup.h Normal file
View file

@ -0,0 +1,46 @@
/*
* Copyright (C) 2016, Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER 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 CPU_X86_STARTUP_H_
#define CPU_X86_STARTUP_H_
/**
* \brief Declare a function that will be automatically invoked from the kernel
* protection domain during boot, after all of the default device
* initialization has been completed.
*/
#define KERN_STARTUP_FUNC(f) \
static void f(void); \
static uintptr_t \
__attribute__((used, section(".kern_startup_func"))) \
__kern_startup_f = (uintptr_t)f; \
static void f(void)
#endif /* CPU_X86_STARTUP_H_ */