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c03c6ceb29
With the header cleanup we can now give this header a suitable name, since it now really only contains register access and other I/O functions and assorted definitions. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
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* Copyright © 2007 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Ben Gamari <bgamari.foss@gmail.com>
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*
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <err.h>
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#include "intel_io.h"
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#include "intel_chipset.h"
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int main(int argc, char** argv)
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{
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uint32_t reg, value;
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volatile uint32_t *ptr;
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if (argc < 3) {
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printf("Usage: %s addr value\n", argv[0]);
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printf(" WARNING: This is dangerous to you and your system's health.\n");
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printf(" Only for use in debugging.\n");
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exit(1);
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}
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intel_register_access_init(intel_get_pci_device(), 0);
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sscanf(argv[1], "0x%x", ®);
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sscanf(argv[2], "0x%x", &value);
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ptr = (volatile uint32_t *)((volatile char *)mmio + reg);
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printf("Value before: 0x%X\n", *ptr);
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*ptr = value;
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printf("Value after: 0x%X\n", *ptr);
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intel_register_access_fini();
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return 0;
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}
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