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-rw-r--r--src/ec/starlabs/merlin/Kconfig14
-rw-r--r--src/ec/starlabs/merlin/ec.h7
-rw-r--r--src/ec/starlabs/merlin/ite.c63
-rw-r--r--src/ec/starlabs/merlin/variants/adl/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/apl/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/cezanne/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/cml/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/glk/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/glkr/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/kbl/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/merlin/ecdefs.h1
-rw-r--r--src/ec/starlabs/merlin/variants/tgl/ecdefs.h1
12 files changed, 93 insertions, 0 deletions
diff --git a/src/ec/starlabs/merlin/Kconfig b/src/ec/starlabs/merlin/Kconfig
index 6ccd21791c..5939854d1d 100644
--- a/src/ec/starlabs/merlin/Kconfig
+++ b/src/ec/starlabs/merlin/Kconfig
@@ -64,6 +64,20 @@ config EC_STARLABS_MAX_CHARGE
help
Select if the mainboard supports limiting the maximum charge of the battery.
+config EC_STARLABS_MIRROR_SUPPORT
+ bool "Enable mirror flag support"
+ default n
+ depends on EC_STARLABS_ITE
+ help
+ Select if the EC should mirror the EC firmware contained in the coreboot ROM.
+
+config EC_STARLABS_MIRROR_VERSION
+ hex "Version of the EC firmware that should be installed."
+ depends on EC_STARLABS_MIRROR_SUPPORT
+ help
+ The version of the EC that should be installed. The mirror flag will be activated
+ if this Kconfig option is set and it does not match the current EC version.
+
config EC_STARLABS_MERLIN
bool "Use open-source Merlin EC Firmware"
default n
diff --git a/src/ec/starlabs/merlin/ec.h b/src/ec/starlabs/merlin/ec.h
index ca1d081f0c..2fe5ec5128 100644
--- a/src/ec/starlabs/merlin/ec.h
+++ b/src/ec/starlabs/merlin/ec.h
@@ -98,6 +98,13 @@
#define KBL_DISABLED 0x00
#define KBL_ENABLED 0xdd
+/* Mirror Flag */
+#define MIRROR_DISABLED 0x00
+#define MIRROR_ENABLED 0xaa
+
+#define MIRROR_ATTEMPTS 1
+
uint16_t ec_get_version(void);
+void ec_mirror_flag(void);
#endif
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);
/*
diff --git a/src/ec/starlabs/merlin/variants/adl/ecdefs.h b/src/ec/starlabs/merlin/variants/adl/ecdefs.h
index 28f7e4b84f..f7c584c304 100644
--- a/src/ec/starlabs/merlin/variants/adl/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/adl/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_MAX_CHARGE 0x1a
#define ECRAM_FAN_MODE 0x1b
#define ECRAM_FAST_CHARGE dead_code_t(uint8_t)
+#define ECRAM_MIRROR_FLAG 0x05
#endif
diff --git a/src/ec/starlabs/merlin/variants/apl/ecdefs.h b/src/ec/starlabs/merlin/variants/apl/ecdefs.h
index fa7e79b148..5cbe14e36d 100644
--- a/src/ec/starlabs/merlin/variants/apl/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/apl/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_MAX_CHARGE dead_code_t(uint8_t)
#define ECRAM_FAN_MODE dead_code_t(uint8_t)
#define ECRAM_FAST_CHARGE dead_code_t(uint8_t)
+#define ECRAM_MIRROR_FLAG 0x04
#endif
diff --git a/src/ec/starlabs/merlin/variants/cezanne/ecdefs.h b/src/ec/starlabs/merlin/variants/cezanne/ecdefs.h
index 6942c391a3..0c522cc845 100644
--- a/src/ec/starlabs/merlin/variants/cezanne/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/cezanne/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_KBL_BRIGHTNESS 0x36
#define ECRAM_FN_LOCK_STATE 0x70
#define ECRAM_FAST_CHARGE dead_code_t(uint8_t)
+#define ECRAM_MIRROR_FLAG 0x05
#endif
diff --git a/src/ec/starlabs/merlin/variants/cml/ecdefs.h b/src/ec/starlabs/merlin/variants/cml/ecdefs.h
index 6a24bc4deb..0a2654bf8f 100644
--- a/src/ec/starlabs/merlin/variants/cml/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/cml/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_KBL_BRIGHTNESS 0x19
#define ECRAM_FN_LOCK_STATE 0x2c
#define ECRAM_FAST_CHARGE dead_code_t(uint8_t)
+#define ECRAM_MIRROR_FLAG 0x04
#endif
diff --git a/src/ec/starlabs/merlin/variants/glk/ecdefs.h b/src/ec/starlabs/merlin/variants/glk/ecdefs.h
index fefdd141c9..b2e2f2f8ab 100644
--- a/src/ec/starlabs/merlin/variants/glk/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/glk/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_MAX_CHARGE dead_code_t(uint8_t)
#define ECRAM_FAN_MODE dead_code_t(uint8_t)
#define ECRAM_FAST_CHARGE dead_code_t(uint8_t)
+#define ECRAM_MIRROR_FLAG 0x04
#endif
diff --git a/src/ec/starlabs/merlin/variants/glkr/ecdefs.h b/src/ec/starlabs/merlin/variants/glkr/ecdefs.h
index 038c378fb2..ecc117c990 100644
--- a/src/ec/starlabs/merlin/variants/glkr/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/glkr/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_MAX_CHARGE dead_code_t(uint8_t)
#define ECRAM_FAN_MODE dead_code_t(uint8_t)
#define ECRAM_FAST_CHARGE 0x18
+#define ECRAM_MIRROR_FLAG dead_code_t(uint8_t)
#endif
diff --git a/src/ec/starlabs/merlin/variants/kbl/ecdefs.h b/src/ec/starlabs/merlin/variants/kbl/ecdefs.h
index 3b693173af..8f3355dd0a 100644
--- a/src/ec/starlabs/merlin/variants/kbl/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/kbl/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_FN_CTRL_REVERSE 0x43
#define ECRAM_MAX_CHARGE dead_code_t(uint8_t)
#define ECRAM_FAST_CHARGE dead_code_t(uint8_t)
+#define ECRAM_MIRROR_FLAG 0x04
#endif
diff --git a/src/ec/starlabs/merlin/variants/merlin/ecdefs.h b/src/ec/starlabs/merlin/variants/merlin/ecdefs.h
index f02c73a27c..08f80cb1f8 100644
--- a/src/ec/starlabs/merlin/variants/merlin/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/merlin/ecdefs.h
@@ -20,5 +20,6 @@
#define ECRAM_FAN_MODE 0x50
#define ECRAM_MAX_CHARGE 0x51
#define ECRAM_FAST_CHARGE 0x52
+#define ECRAM_MIRROR_FLAG 0x05
#endif
diff --git a/src/ec/starlabs/merlin/variants/tgl/ecdefs.h b/src/ec/starlabs/merlin/variants/tgl/ecdefs.h
index cbc7b86e10..c17b02542b 100644
--- a/src/ec/starlabs/merlin/variants/tgl/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/tgl/ecdefs.h
@@ -23,5 +23,6 @@
#define ECRAM_MAX_CHARGE 0x1a
#define ECRAM_FAN_MODE 0x1b
#define ECRAM_FAST_CHARGE dead_code_t(uint8_t)
+#define ECRAM_MIRROR_FLAG 0x05
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 03:22:27 +0000