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bootstate: use structure pointers for scheduling callbacks

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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>
This commit is contained in:
Aaron Durbin
2015-03-16 17:30:09 -05:00
committed by Aaron Durbin
parent b335c3de42
commit 9ef9d85976
28 changed files with 59 additions and 103 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/lib/hardwaremain.c
View File

@ -432,18 +432,16 @@ int boot_state_sched_on_exit(struct boot_state_callback *bscb,
static void boot_state_schedule_static_entries(void)
{
extern struct boot_state_init_entry _bs_init_begin;
extern struct boot_state_init_entry _bs_init_end;
struct boot_state_init_entry *cur;
extern struct boot_state_init_entry *_bs_init_begin[];
struct boot_state_init_entry **slot;
cur = &_bs_init_begin;
for (slot = &_bs_init_begin[0]; *slot != NULL; slot++) {
struct boot_state_init_entry *cur = *slot;
while (cur != &_bs_init_end) {
if (cur->when == BS_ON_ENTRY)
boot_state_sched_on_entry(&cur->bscb, cur->state);
else
boot_state_sched_on_exit(&cur->bscb, cur->state);
cur++;
}
}