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authorKyösti Mälkki <kyosti.malkki@gmail.com>2014-12-21 08:55:47 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2015-01-27 22:44:17 +0100
commit8659e4072e19130099ac4a81b204d594a6d3fb7d (patch)
tree0f2dca86b701833e6be89f794ae39ac9c5dee501 /src/console
parent4d10750d1341f9831547e69d66b57ad512cfd6fb (diff)
downloadcoreboot-8659e4072e19130099ac4a81b204d594a6d3fb7d.tar.xz
CBMEM console: Fix and enhance pre-RAM support
Use the value of CONSOLE_PRERAM_BUFFER_SIZE to determine if we can do CBMEM console in bootblock and romstage. Kconfig forces it to zero if _BASE is unset or we cannot do CAR migration on x86. Add CBMEM console to bootblock, except for x86. Only one of bootblock and romstage clears the pre-RAM buffer. To start with empty console log on S3 wakeup, ramstage now clears previous contents of CBMEM buffer if there was no pre-RAM buffer. Unify Kconfig variable naming. TODO: ARM configurations do not define PRERAM_BUFFER_BASE values. Change-Id: I70d82da629529dbfd7bc9491223abd703cbc0115 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/7862 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
Diffstat (limited to 'src/console')
-rw-r--r--src/console/Kconfig14
1 files changed, 11 insertions, 3 deletions
diff --git a/src/console/Kconfig b/src/console/Kconfig
index 0d32011b46..5974695a54 100644
--- a/src/console/Kconfig
+++ b/src/console/Kconfig
@@ -175,8 +175,9 @@ config CONSOLE_CBMEM
Enable this to save the console output in a CBMEM buffer. This would
allow to see coreboot console output from Linux space.
+if CONSOLE_CBMEM
+
config CONSOLE_CBMEM_BUFFER_SIZE
- depends on CONSOLE_CBMEM
hex "Room allocated for console output in CBMEM"
default 0x20000
help
@@ -184,9 +185,14 @@ config CONSOLE_CBMEM_BUFFER_SIZE
value (128K or 0x20000 bytes) is large enough to accommodate
even the BIOS_SPEW level.
+config CONSOLE_PRERAM_BUFFER_BASE
+ hex
+ default 0xabadbeef if !CACHE_AS_RAM || BROKEN_CAR_MIGRATE
+ default 0x0
+
config CONSOLE_PRERAM_BUFFER_SIZE
- depends on CONSOLE_CBMEM
- hex "Room allocated for console output before RAM is initialized"
+ hex
+ default 0x0 if CONSOLE_PRERAM_BUFFER_BASE = 0xabadbeef
default 0xc00
help
Console is used before RAM is initialized. This is the room reserved
@@ -194,6 +200,8 @@ config CONSOLE_PRERAM_BUFFER_SIZE
can be saved in a CBMEM buffer. 3K bytes should be enough even for
the BIOS_SPEW level.
+endif
+
config CONSOLE_QEMU_DEBUGCON
bool "QEMU debug console output"
depends on BOARD_EMULATION_QEMU_X86