diff options
| author | Julius Werner <jwerner@chromium.org> | 2016-08-19 15:17:42 -0700 |
|---|---|---|
| committer | Julius Werner <jwerner@chromium.org> | 2016-08-23 21:33:29 +0200 |
| commit | 85b1aadcc1f0cec7eef73a527c5131fb3b1c2f95 (patch) | |
| tree | 20fecb9addd122768ffaa90768776efc1fef47db | |
| parent | d9ff75f2cb944d3536f7a502c1c7519843c06618 (diff) | |
| download | coreboot-85b1aadcc1f0cec7eef73a527c5131fb3b1c2f95.tar.xz | |
memlayout: Ensure TIMESTAMP() region is big enough to avoid BUG()
The timestamp code asserts that the _timestamp region (allocated in
memlayout for pre-RAM stages) is large enough for the assumptions it
makes. This is good, except that we often initialize timestamps
extremely early in the bootblock, even before console output. Debugging
a BUG() that hits before console_init() is no fun.
This patch adds a link-time assertion for the size of the _timestamp
region in memlayout to prevent people from accidentally running into
this issue.
Change-Id: Ibe4301fb89c47fde28e883fd11647d6b62a66fb0
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/16270
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
| -rw-r--r-- | src/include/memlayout.h | 3 | ||||
| -rw-r--r-- | src/lib/timestamp.c | 1 |
2 files changed, 3 insertions, 1 deletions
diff --git a/src/include/memlayout.h b/src/include/memlayout.h index 43a1caca75..a68b21f4d6 100644 --- a/src/include/memlayout.h +++ b/src/include/memlayout.h @@ -75,7 +75,8 @@ #define DRAM_START(addr) SYMBOL(dram, addr) #define TIMESTAMP(addr, size) \ - REGION(timestamp, addr, size, 8) + REGION(timestamp, addr, size, 8) \ + _ = ASSERT(size >= 212, "Timestamp region must fit timestamp_cache!"); #define PRERAM_CBMEM_CONSOLE(addr, size) \ REGION(preram_cbmem_console, addr, size, 4) diff --git a/src/lib/timestamp.c b/src/lib/timestamp.c index d8b93f9755..2f2a5d8752 100644 --- a/src/lib/timestamp.c +++ b/src/lib/timestamp.c @@ -27,6 +27,7 @@ #define MAX_TIMESTAMPS 84 +/* When changing this number, adjust TIMESTAMP() size ASSERT() in memlayout.h */ #define MAX_BSS_TIMESTAMP_CACHE 16 struct __attribute__((__packed__)) timestamp_cache { |