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| author | Aaron Durbin <adurbin@chromium.org> | 2015-03-16 17:30:09 -0500 |
|---|---|---|
| committer | Aaron Durbin <adurbin@google.com> | 2015-03-18 16:41:43 +0100 |
| commit | 9ef9d85976fcfc5f4c8c273eaf3377fdd6e5c24d (patch) | |
| tree | e33c2670ea0188d24bd0dd4b979a18fe1075820f /src/include | |
| parent | b335c3de424c6d80e229c0a79d1e47fd602bfaaa (diff) | |
| download | coreboot-9ef9d85976fcfc5f4c8c273eaf3377fdd6e5c24d.tar.xz | |
bootstate: use structure pointers for scheduling callbacks
The GCC 4.9.2 update showed that the boot_state_init_entry
structures were being padded and assumed to be aligned in to an
increased size. The bootstate scheduler for static entries,
boot_state_schedule_static_entries(), was then calculating the
wrong values within the array. To fix this just use a pointer to
the boot_state_init_entry structure that needs to be scheduled.
In addition to the previous issue noted above, the .bs_init
section was sitting in the read only portion of the image while
the fields within it need to be writable. Also, the
boot_state_schedule_static_entries() was using symbol comparison
to terminate a loop which in C can lead the compiler to always
evaluate the loop at least once since the language spec indicates
no 2 symbols can be the same value.
Change-Id: I6dc5331c2979d508dde3cd5c3332903d40d8048b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8699
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/bootstate.h | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/src/include/bootstate.h b/src/include/bootstate.h index 202acf7d4e..8b5e4be62f 100644 --- a/src/include/bootstate.h +++ b/src/include/bootstate.h @@ -22,6 +22,9 @@ #if !defined(__SMM__) && !defined(__PRE_RAM__) #include <string.h> +#include <stdlib.h> +#include <stddef.h> +#include <stdint.h> /* Control debugging of the boot state machine. */ #define BOOT_STATE_DEBUG 0 @@ -157,6 +160,10 @@ int boot_state_sched_on_entry(struct boot_state_callback *bscb, boot_state_t state); int boot_state_sched_on_exit(struct boot_state_callback *bscb, boot_state_t state); +/* Schedule an array of entries of size num. */ +struct boot_state_init_entry; +void boot_state_sched_entries(struct boot_state_init_entry *entries, + size_t num); /* Block/Unblock the (state, seq) pair from transitioning. Returns 0 on * success < 0 when the phase of the (state,seq) has already ran. */ @@ -180,15 +187,16 @@ struct boot_state_init_entry { #define BOOT_STATE_INIT_ATTR __attribute__ ((used,section (".bs_init"))) -#define BOOT_STATE_INIT_ENTRIES(name_) \ - static struct boot_state_init_entry name_[] BOOT_STATE_INIT_ATTR - -#define BOOT_STATE_INIT_ENTRY(state_, when_, func_, arg_) \ - { \ - .state = state_, \ - .when = when_, \ - .bscb = BOOT_STATE_CALLBACK_INIT(func_, arg_), \ - } +#define BOOT_STATE_INIT_ENTRY(state_, when_, func_, arg_) \ + static struct boot_state_init_entry func_ ##_## state_ ##_## when_ = \ + { \ + .state = state_, \ + .when = when_, \ + .bscb = BOOT_STATE_CALLBACK_INIT(func_, arg_), \ + }; \ + static struct boot_state_init_entry * \ + bsie_ ## func_ ##_## state_ ##_## when_ BOOT_STATE_INIT_ATTR = \ + & func_ ##_## state_ ##_## when_; #endif #endif /* BOOTSTATE_H */ |