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authorYu-Ping Wu <yupingso@chromium.org>2019-12-02 11:11:53 +0800
committerPatrick Georgi <pgeorgi@google.com>2019-12-16 09:47:38 +0000
commit41956b574212224127ba393f6e65be88de6f3f21 (patch)
treedebd4257ed82d396953a848f1a06b1e0145f91a4 /payloads/libpayload/include/libpayload.h
parentc32ca089c97198a7f715c91d8a8be0d94c67953c (diff)
downloadcoreboot-41956b574212224127ba393f6e65be88de6f3f21.tar.xz
libpayload: Implement reading from CBMEM console
To support showing CBMEM logs on recovery screen, add a function cbmem_console_snapshot() to copy the CBMEM console to an allocated buffer. Non-printable characters are automatically replaced with '?' to ensure the returned string is printable. BRANCH=none BUG=b:146105976 TEST=emerge-nami libpayload Change-Id: Ie324055f5fd8276f1d833fc9d04f60a792dbb9f6 Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37667 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Diffstat (limited to 'payloads/libpayload/include/libpayload.h')
-rw-r--r--payloads/libpayload/include/libpayload.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h
index 934c368e5c..4b6a250f28 100644
--- a/payloads/libpayload/include/libpayload.h
+++ b/payloads/libpayload/include/libpayload.h
@@ -313,6 +313,13 @@ void video_printf(int foreground, int background, enum video_printf_align align,
*/
void cbmem_console_init(void);
void cbmem_console_write(const void *buffer, size_t count);
+/**
+ * Take a snapshot of the CBMEM memory console. This function will allocate a
+ * range of memory. Callers must free the returned buffer by themselves.
+ *
+ * @return The allocated buffer on success, NULL on failure.
+ */
+char *cbmem_console_snapshot(void);
/** @} */
/* drivers/option.c */