diff options
| author | Furquan Shaikh <furquan@chromium.org> | 2017-08-05 11:12:44 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2017-08-10 16:25:14 +0000 |
| commit | ea4ece61b6fc787c652a193ecd04c075daca3158 (patch) | |
| tree | 44ce6dc1af1cd2f7ef61bd4510e3da694fd9119d /src/soc/intel/common | |
| parent | 96024836077d28100035950e517b2ae5ad1ab5d9 (diff) | |
soc/intel/apollolake: Enable UART debug controller on S3 resume
1. Add a new variable to GNVS to store information during S3 suspend
whether UART debug controller is enabled.
2. On resume, read stored GNVS variable to decide if UART debug port
controller needs to be initialized.
3. Provide helper functions required by intel/common UARRT driver for
enabling controller on S3 resume.
BUG=b:64030366
Change-Id: Idd17dd0bd3c644383f273b465a16add184e3b171
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/20888
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/common')
| -rw-r--r-- | src/soc/intel/common/block/smm/smihandler.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/smm/smihandler.c b/src/soc/intel/common/block/smm/smihandler.c index 24327f2aa8..3f1f490861 100644 --- a/src/soc/intel/common/block/smm/smihandler.c +++ b/src/soc/intel/common/block/smm/smihandler.c @@ -23,6 +23,7 @@ #include <elog.h> #include <intelblocks/pmclib.h> #include <intelblocks/smihandler.h> +#include <intelblocks/uart.h> #include <soc/nvs.h> #include <soc/pm.h> #include <soc/gpio.h> @@ -161,6 +162,8 @@ void smihandler_southbridge_sleep( case ACPI_S3: printk(BIOS_DEBUG, "SMI#: Entering S3 (Suspend-To-RAM)\n"); + gnvs->uior = uart_debug_controller_is_initialized(); + /* Invalidate the cache before going to S3 */ wbinvd(); break; |