diff options
Diffstat (limited to 'src/ec/starlabs/merlin/ite.c')
| -rw-r--r-- | src/ec/starlabs/merlin/ite.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/ec/starlabs/merlin/ite.c b/src/ec/starlabs/merlin/ite.c index 357c67cda5..9730647276 100644 --- a/src/ec/starlabs/merlin/ite.c +++ b/src/ec/starlabs/merlin/ite.c @@ -6,6 +6,7 @@ #include <ec/acpi/ec.h> #include <option.h> #include <pc80/keyboard.h> +#include <halt.h> #include "ec.h" #include "ecdefs.h" @@ -26,6 +27,66 @@ static uint8_t get_ec_value_from_option(const char *name, return lut[index]; } +static void ec_mirror_with_count(void) +{ + unsigned int cmos_mirror_flag_counter = get_uint_option("mirror_flag_counter", UINT_MAX); + + if (cmos_mirror_flag_counter != UINT_MAX) { + printk(BIOS_DEBUG, "ITE: mirror_flag_counter = %u\n", cmos_mirror_flag_counter); + + /* Avoid boot loops by only trying a state change once */ + if (cmos_mirror_flag_counter < MIRROR_ATTEMPTS) { + cmos_mirror_flag_counter++; + set_uint_option("mirror_flag_counter", cmos_mirror_flag_counter); + printk(BIOS_DEBUG, "ITE: Mirror attempt %u/%u.\n", cmos_mirror_flag_counter, + MIRROR_ATTEMPTS); + + /* Write the EC mirror flag */ + ec_write(ECRAM_MIRROR_FLAG, MIRROR_ENABLED); + + /* Check what has been written */ + if (ec_read(ECRAM_MIRROR_FLAG) == MIRROR_ENABLED) + poweroff(); + } else { + /* + * If the mirror flags fails after 1 attempt, it will + * likely need a cold boot, or recovering. + */ + printk(BIOS_ERR, "ITE: Failed to mirror the EC in %u attempts!\n", + MIRROR_ATTEMPTS); + } + } else { + printk(BIOS_DEBUG, "ITE: Powering Off"); + /* Write the EC mirror flag */ + ec_write(ECRAM_MIRROR_FLAG, MIRROR_ENABLED); + + /* Check what has been written */ + if (ec_read(ECRAM_MIRROR_FLAG) == MIRROR_ENABLED) + poweroff(); + } +} + + +void ec_mirror_flag(void) +{ + /* + * For the mirror flag to work, the status of the EC pin must be known + * at all times, which means external power. This can be either a DC + * charger, or PD with CCG6. PD with an ANX7447 requires configuration + * from the EC, so the update will interrupt this. + * + * This means we can unconditionally apply the mirror flag to devices + * that have CCG6, present on devices with TBT, but have a manual + * flag for devices without it. + */ + if (CONFIG(EC_STARLABS_MIRROR_SUPPORT) && + (CONFIG(SOC_INTEL_COMMON_BLOCK_TCSS) || get_uint_option("mirror_flag", 0)) && + (ec_get_version() != CONFIG_EC_STARLABS_MIRROR_VERSION)) { + printk(BIOS_ERR, "ITE: System and EC ROM version mismatch.\n"); + ec_mirror_with_count(); + } +} + static uint16_t ec_get_chip_id(unsigned int port) { return (pnp_read_index(port, ITE_CHIPID1) << 8) | @@ -57,6 +118,8 @@ static void merlin_init(struct device *dev) return; } + ec_mirror_flag(); + pc_keyboard_init(NO_AUX_DEVICE); /* |