This changed a few years ago to include an overflow flag. Bring in the new structure.
This comes from coreboot commit:
6f5ead14b4 ("mb/google/nissa/var/joxer: Update eMMC DLL settings")
Note: There are several implementations of this in coreboot. I have chosen to follow the one in src/lib/cbmem_console.c
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Drop __packed as it does nothing useful
arch/x86/include/asm/coreboot_tables.h | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/coreboot_tables.h b/arch/x86/include/asm/coreboot_tables.h index 4de137fbab9d..0dfb64babb96 100644 --- a/arch/x86/include/asm/coreboot_tables.h +++ b/arch/x86/include/asm/coreboot_tables.h @@ -299,11 +299,24 @@ struct cb_vdat { #define CB_TAG_TIMESTAMPS 0x0016 #define CB_TAG_CBMEM_CONSOLE 0x0017
+#define CBMC_CURSOR_MASK ((1 << 28) - 1) +#define CBMC_OVERFLOW BIT(31) + +/* + * struct cbmem_console - In-memory console buffer for coreboot + * + * Structure describing console buffer. It is overlaid on a flat memory area, + * with body covering the extent of the memory. Once the buffer is full, + * output will wrap back around to the start of the buffer. The high bit of the + * cursor field gets set to indicate that this happened. If the underlying + * storage allows this, the buffer will persist across multiple boots and append + * to the previous log. + */ struct cbmem_console { u32 size; u32 cursor; - char body[0]; -} __packed; + u8 body[0]; +};
#define CB_TAG_MRC_CACHE 0x0018