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memlayout: Add symbols for stage bounds

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Stages are inconsistent with other memlayout regions in that they don't
have _<name> and _e<name> symbols defined. We have _program and
_eprogram, but that always only refers to the current stage and
_eprogram marks the actual end of the executable's memory footprint, not
the end of the area allocated in memlayout. Both of these are sometimes
useful to know, so let's add another set of symbols that allow the stage
areas to be treated more similarly to other regions.

Change-Id: I9e8cff46bb15b51c71a87bd11affb37610aa7df9
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/13737
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Julius Werner
2016-02-18 15:46:15 -08:00
parent f7c01aa774
commit 862c385f9a
2 changed files with 30 additions and 12 deletions
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24
src/include/memlayout.h
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@ -103,38 +103,38 @@
/* Careful: 'INCLUDE <filename>' must always be at the end of the output line */
#if ENV_BOOTBLOCK
#define BOOTBLOCK(addr, sz) \
SET_COUNTER(bootblock, addr) \
SYMBOL(bootblock, addr) \
_ebootblock = _bootblock + sz; \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Bootblock exceeded its allotted size! (sz))); \
INCLUDE "bootblock/lib/program.ld"
#else
#define BOOTBLOCK(addr, sz) \
SET_COUNTER(bootblock, addr) \
. += sz;
REGION(bootblock, addr, sz, 1)
#endif
#if ENV_ROMSTAGE
#define ROMSTAGE(addr, sz) \
SET_COUNTER(romstage, addr) \
SYMBOL(romstage, addr) \
_eromstage = _romstage + sz; \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Romstage exceeded its allotted size! (sz))); \
INCLUDE "romstage/lib/program.ld"
#else
#define ROMSTAGE(addr, sz) \
SET_COUNTER(romstage, addr) \
. += sz;
REGION(romstage, addr, sz, 1)
#endif
#if ENV_RAMSTAGE
#define RAMSTAGE(addr, sz) \
SET_COUNTER(ramstage, addr) \
SYMBOL(ramstage, addr) \
_eramstage = _ramstage + sz; \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Ramstage exceeded its allotted size! (sz))); \
INCLUDE "ramstage/lib/program.ld"
#else
#define RAMSTAGE(addr, sz) \
SET_COUNTER(ramstage, addr) \
. += sz;
REGION(ramstage, addr, sz, 1)
#endif
/* Careful: required work buffer size depends on RW properties such as key size
@ -146,7 +146,8 @@
#if ENV_VERSTAGE
#define VERSTAGE(addr, sz) \
SET_COUNTER(verstage, addr) \
SYMBOL(verstage, addr) \
_everstage = _verstage + sz; \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Verstage exceeded its allotted size! (sz))); \
INCLUDE "verstage/lib/program.ld"
@ -154,8 +155,7 @@
#define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) VERSTAGE(addr, size)
#else
#define VERSTAGE(addr, sz) \
SET_COUNTER(verstage, addr) \
. += sz;
REGION(verstage, addr, sz, 1)
#define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) ROMSTAGE(addr, size)
#endif