mb/starlabs/*: Add a CMOS option to disable the GNA

Add an option, which defaults to disabled, to control whether the
GNA (Gaussian Neural Accelerator) is enabled. This is a device that
designed to handle AI tasks.

Change-Id: I99f015cf1b5e21e8b524c4aa9bd3e94f86908ca1
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85703
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

src/mainboard/starlabs/byte_adl/cmos.default

@@ -11,3 +11,4 @@ me_state=Disable
 # Devices
 wireless=Enable
 webcam=Enable
+gna=Disable

src/mainboard/starlabs/byte_adl/cmos.layout

@@ -27,6 +27,7 @@ entries
 
 # coreboot config options: Devices
 504	1	e	1	wireless
+512	1	e	1	gna
 
 # coreboot config options: check sums
 984	16	h	0	check_sum

src/mainboard/starlabs/byte_adl/variants/mk_ii/devtree.c

@@ -20,6 +20,7 @@ void devtree_update(void)
 		&cfg->power_limits_config[ADL_N_041_6W_CORE];
 
 	struct device *nic_dev = pcidev_on_root(0x14, 3);
+	struct device *gna_dev = pcidev_on_root(0x08, 0);
 
 	uint8_t performance_scale = 100;
 
@@ -53,4 +54,8 @@ void devtree_update(void)
 		cfg->usb2_ports[9].enable = 0;
 		nic_dev->enabled = 0;
 	}
+
+	/* Enable/Disable GNA based on CMOS settings */
+	if (get_uint_option("gna", 0) == 0)
+		gna_dev->enabled = 0;
 }

src/mainboard/starlabs/starbook/cmos.default

@@ -18,6 +18,7 @@ pci_hot_plug=Disable
 fingerprint_reader=Enable
 card_reader=Enable
 lid_switch=Enable
+gna=Disable
 # EC
 kbl_timeout=30 seconds
 fn_ctrl_swap=Disable

src/mainboard/starlabs/starbook/cmos.layout

@@ -35,6 +35,7 @@ entries
 542	1	e	1	fingerprint_reader
 550	1	e	1	card_reader
 558	1	e	1	lid_switch
+566	1	e	1	gna
 
 # coreboot config options: EC
 600	3	e	4	kbl_timeout

src/mainboard/starlabs/starbook/variants/adl/devtree.c

@@ -22,6 +22,8 @@ void devtree_update(void)
 	struct soc_power_limits_config *soc_conf_12core =
 		&cfg->power_limits_config[ADL_P_682_28W_CORE];
 
+	struct device *gna_dev = pcidev_on_root(0x08, 0);
+
 	uint8_t performance_scale = 100;
 
 	/* Set PL4 to 1.0C */
@@ -69,4 +71,8 @@ void devtree_update(void)
 	/* Enable/Disable Card Reader based on CMOS Settings */
 	if (get_uint_option("card_reader", 1) == 0)
 		cfg->usb2_ports[3].enable = 0;
+
+	/* Enable/Disable GNA based on CMOS settings */
+	if (get_uint_option("gna", 0) == 0)
+		gna_dev->enabled = 0;
 }

src/mainboard/starlabs/starbook/variants/rpl/devtree.c

@@ -24,6 +24,7 @@ void devtree_update(void)
 
 	struct device *tbt_pci_dev = pcidev_on_root(0x07, 0);
 	struct device *tbt_dma_dev = pcidev_on_root(0x0d, 2);
+	struct device *gna_dev = pcidev_on_root(0x08, 0);
 
 	uint8_t performance_scale = 100;
 
@@ -78,4 +79,8 @@ void devtree_update(void)
 		tbt_pci_dev->enabled = 0;
 		tbt_dma_dev->enabled = 0;
 	}
+
+	/* Enable/Disable GNA based on CMOS settings */
+	if (get_uint_option("gna", 0) == 0)
+		gna_dev->enabled = 0;
 }

src/mainboard/starlabs/starbook/variants/tgl/devtree.c

@@ -22,6 +22,7 @@ void devtree_update(void)
 	struct device *nic_dev = pcidev_on_root(0x14, 3);
 	struct device *tbt_pci_dev = pcidev_on_root(0x07, 0);
 	struct device *tbt_dma_dev = pcidev_on_root(0x0d, 2);
+	struct device *gna_dev = pcidev_on_root(0x08, 0);
 
 	uint8_t performance_scale = 100;
 
@@ -73,4 +74,8 @@ void devtree_update(void)
 		tbt_pci_dev->enabled = 0;
 		tbt_dma_dev->enabled = 0;
 	}
+
+	/* Enable/Disable GNA based on CMOS settings */
+	if (get_uint_option("gna", 0) == 0)
+		gna_dev->enabled = 0;
 }

src/mainboard/starlabs/starfighter/cmos.default

@@ -14,6 +14,7 @@ webcam=Enable
 microphone=Enable
 pci_hot_plug=Disable
 lid_switch=Enable
+gna=Disable
 # EC
 kbl_timeout=30 seconds
 fn_ctrl_swap=Disable

src/mainboard/starlabs/starfighter/cmos.layout

@@ -31,6 +31,7 @@ entries
 512	1	e	1	webcam
 520	1	e	1	microphone
 528	1	e	1	lid_switch
+536	1	e	1	gna
 
 # coreboot config options: EC
 600	3	e	4	kbl_timeout

src/mainboard/starlabs/starfighter/variants/rpl/devtree.c

@@ -25,6 +25,7 @@ void devtree_update(void)
 	struct device *tbt_pci_dev_0 = pcidev_on_root(0x07, 0);
 	struct device *tbt_pci_dev_1 = pcidev_on_root(0x07, 0);
 	struct device *tbt_dma_dev = pcidev_on_root(0x0d, 2);
+	struct device *gna_dev = pcidev_on_root(0x08, 0);
 
 	uint8_t performance_scale = 100;
 
@@ -72,4 +73,8 @@ void devtree_update(void)
 		tbt_pci_dev_1->enabled = 0;
 		tbt_dma_dev->enabled = 0;
 	}
+
+	/* Enable/Disable GNA based on CMOS settings */
+	if (get_uint_option("gna", 0) == 0)
+		gna_dev->enabled = 0;
 }

src/mainboard/starlabs/starlite_adl/cmos.default

@@ -16,5 +16,6 @@ camera=Enable
 microphone=Enable
 lid_switch=Disable
 power_led=Normal
+gna=Disable
 # EC
 charging_speed=0.5C

src/mainboard/starlabs/starlite_adl/cmos.layout

@@ -33,6 +33,7 @@ entries
 528	1	e	1	microphone
 536	1	e	1	lid_switch
 542	1	e	9	power_led
+550	1	e	1	gna
 
 # coreboot config options: EC
 600	2	e	6	max_charge

src/mainboard/starlabs/starlite_adl/variants/mk_v/devtree.c

@@ -22,6 +22,7 @@ void devtree_update(void)
 	struct device *nic_dev = pcidev_on_root(0x14, 3);
 	struct device *touchscreen_dev = pcidev_on_root(0x15, 2);
 	struct device *accelerometer_dev = pcidev_on_root(0x15, 0);
+	struct device *gna_dev = pcidev_on_root(0x08, 0);
 
 	uint8_t performance_scale = 100;
 
@@ -71,4 +72,8 @@ void devtree_update(void)
 	/* Enable/Disable Accelerometer based on CMOS settings */
 	if (get_uint_option("accelerometer", 1) == 0)
 		accelerometer_dev->enabled = 0;
+
+	/* Enable/Disable GNA based on CMOS settings */
+	if (get_uint_option("gna", 0) == 0)
+		gna_dev->enabled = 0;
 }