d67c6876b5
This patch allows the CBMEM console to persist across reboots, which should greatly help post factum debugging of issues involving multiple reboots. In order to prevent the console from filling up, it will instead operate as a ring buffer that continues to evict the oldest lines once full. (This means that if even a single boot doesn't fit into the buffer, we will now drop the oldest lines whereas previous code would've dropped the newest lines instead.) The console control structure is modified in a sorta backwards-compatible way, so that new readers can continue to work with old console buffers and vice versa. When an old reader reads a new buffer that has already once overflowed (i.e. is operating in true ring buffer mode) it will print lines out of order, but it will at least still print out the whole console content and not do any illegal memory accesses (assuming it correctly implemented cursor overflow as it was already possible before this patch). BUG=chromium:651966 TEST=Rebooted and confirmed output repeatedly on a Kevin and a Falco. Also confirmed correct behavior across suspend/resume for the latter. Change-Id: Ifcbf59d58e1ad20995b98d111c4647281fbb45ff Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/18301 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> |
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| .. | ||
| COPYING | ||
| Kconfig | ||
| Makefile | ||
| README | ||
| bootlog_module.c | ||
| cbfs_module.c | ||
| coreboot_module.c | ||
| coreinfo.c | ||
| coreinfo.h | ||
| cpuid.S | ||
| cpuinfo_module.c | ||
| multiboot_module.c | ||
| nvram_module.c | ||
| pci_module.c | ||
| ramdump_module.c | ||
| timestamps_module.c | ||
README
This is a silly little program that demonstrates how cool libpayload is and also serves a purpose. It is fun and educational! Requirements ------------ You should use the coreboot reference cross compiler. If you insist on using your system compiler, some Linux distributions might require you to install a package called gcc-multilib if you are on a 64bit system. Build ----- You need libpayload to build coreinfo. So, first, you need follow the README of libpayload to build it but install libpayload into its own directory by doing this: $ make DESTDIR=/path/to/libpayload/install install Then you can build coreinfo now: $ cd coreinfo $ make menuconfig $ make