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Add function to encode device path into integer

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This function will encode the device path into 3
bytes of a dword which can be saved for debug.

It will be used by subsequent commit to store the
current device into CMOS for debugging BIOS hangs.

BUG=chrome-os-partner:19980
BRANCH=none
TEST=New code only, nothing uses it yet.

Change-Id: I3a5155ea53c8d280806e610a0f8998dbabe15f3c
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/58103
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Duncan Laurie 2013-06-10 09:59:17 -07:00 • committed by ChromeBot
commit cede29786b
2 changed files with 56 additions and 0 deletions
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1
src/include/device/device.h
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@ -143,6 +143,7 @@ void enumerate_static_device(void);
void enumerate_static_devices(void);
const char *dev_name(device_t dev);
const char *dev_path(device_t dev);
u32 dev_path_encode(device_t dev);
const char *bus_path(struct bus *bus);
void dev_set_enabled(device_t dev, int enable);
void disable_children(struct bus *bus);