diff options
| -rw-r--r-- | src/soc/intel/elkhartlake/Kconfig | 10 | ||||
| -rw-r--r-- | src/soc/intel/elkhartlake/bootblock/bootblock.c | 9 |
2 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/intel/elkhartlake/Kconfig b/src/soc/intel/elkhartlake/Kconfig index 37807897aa..b8296021fc 100644 --- a/src/soc/intel/elkhartlake/Kconfig +++ b/src/soc/intel/elkhartlake/Kconfig @@ -251,4 +251,14 @@ config SOC_INTEL_ELKHARTLAKE_DEBUG_CONSENT config PRERAM_CBMEM_CONSOLE_SIZE hex default 0x1400 + +config SOC_INTEL_ELKHARTLAKE_TCO_NO_REBOOT_EN + bool "Disable reset on second TCO expiration" + depends on SOC_INTEL_COMMON_BLOCK_TCO + default n + help + Setting this option will prevent a host reset if the TCO timer expires + for the second time. Since this feature is not exposed to the OS in the + standard TCO interface, this setting can be enabled on firmware level. + This might be useful depending on the TCO policy. endif diff --git a/src/soc/intel/elkhartlake/bootblock/bootblock.c b/src/soc/intel/elkhartlake/bootblock/bootblock.c index b8086a42ab..cc0bb8f0c4 100644 --- a/src/soc/intel/elkhartlake/bootblock/bootblock.c +++ b/src/soc/intel/elkhartlake/bootblock/bootblock.c @@ -1,10 +1,12 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <bootblock_common.h> +#include <console/console.h> #include <intelblocks/fast_spi.h> #include <intelblocks/systemagent.h> #include <intelblocks/tco.h> #include <intelblocks/uart.h> +#include <intelpch/smbus.h> #include <soc/bootblock.h> asmlinkage void bootblock_c_entry(uint64_t base_timestamp) @@ -30,4 +32,11 @@ void bootblock_soc_init(void) /* Programming TCO_BASE_ADDRESS and TCO Timer Halt */ tco_configure(); + if (CONFIG(SOC_INTEL_ELKHARTLAKE_TCO_NO_REBOOT_EN)) { + uint16_t reg = tco_read_reg(TCO1_CNT); + /* NO_REBOOT is enabled via bit 0 in TCO1_CNT. */ + reg |= 0x01; + tco_write_reg(TCO1_CNT, reg); + printk(BIOS_DEBUG, "TCO: Disable reset on second expiration.\n"); + } } |