diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c index d01d547096..7362a486d0 100644 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c +++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <bootstate.h> +#include <cf9_reset.h> #include <device/pci_def.h> #include <device/pci_ids.h> #include <device/pci_ops.h> @@ -59,6 +60,11 @@ void variant_mainboard_final(void) if (parent && parent->device == PCI_DID_TI_XIO2001) pci_write_config8(parent, 0xd8, 0x3e); } + + /* Set Full Reset Bit in Reset Control Register (I/O port CF9h). When Bit 3 is set to 1 + and then a warm reset is triggered the PCH will drive SLP_S3 active (low). SLP_S3 is + then used on the mainboard to generate the right reset timing. */ + outb(FULL_RST, RST_CNT); } static void finalize_boot(void *unused) |