[S] Change in coreboot[main]: drivers/wifi: Support Wi-Fi 7 11be Enablement

[Subrata Banik (Code Review)]

Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/82207?usp=email )

Change subject: drivers/wifi: Support Wi-Fi 7 11be Enablement
......................................................................

drivers/wifi: Support Wi-Fi 7 11be Enablement

Add 802.11be (aka. Wi-Fi 7) enable/disable support based on document
559910 Intel Connectivity Platforms BIOS_Guidelines revision 8.3.

There are countries where Wi-Fi 7 should be disabled by default. This
adds capability for OEM to enable or disable by updating the board
specific Specific Absorption Rate (SAR) binary.

BUG=b:348345300
BRANCH=firmware-rex-15709.B
TEST=SSDT dump shows that the _DSM method returns the value supplied
     by the SAR binary for function 12

Change-Id: Ifa1482d7511f48f5138d4c68566f07ce79f37a7a
Signed-off-by: Ravi Sarawadi 
Signed-off-by: Jeremy Compostella 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82207
Tested-by: build bot (Jenkins) 
Reviewed-by: Subrata Banik 
Reviewed-by: Eric Lai 
Reviewed-by: YH Lin 
---
M src/drivers/wifi/generic/acpi.c
M src/include/sar.h
2 files changed, 28 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Eric Lai: Looks good to me, approved
  Subrata Banik: Looks good to me, approved
  YH Lin: Looks good to me, but someone else must approve

diff --git a/src/drivers/wifi/generic/acpi.c b/src/drivers/wifi/generic/acpi.c
index fd1da06..d3da51b 100644
--- a/src/drivers/wifi/generic/acpi.c
+++ b/src/drivers/wifi/generic/acpi.c
@@ -143,6 +143,28 @@
    acpigen_write_return_integer(dsm_config->unii_4);
 }

+/*
+ * Function 12: Control Enablement 802.11be on certificated modules
+ * Bit 0
+ * 0 - 11BE disabled for China Mainland
+ * 1 - 11BE enabled for China Mainland
+ *
+ * Bit 1
+ * 0 - 11BE disabled for South Korea
+ * 1 - 11BE enabled for South Korea
+ *
+ * Bit 2:27 - Reserved (shall be set to zeroes)
+ *
+ * Bit 28:31 - 11BE enablement revision
+ *
+ */
+static void wifi_dsm_11be_country_enablement(void *args)
+{
+	struct dsm_profile *dsm_config = (struct dsm_profile *)args;
+
+	acpigen_write_return_integer(dsm_config->enablement_11be);
+}
+
 static void wifi_dsm_ddrrfim_func3_cb(void *ptr)
 {
    const bool is_cnvi_ddr_rfim_enabled = *(bool *)ptr;
@@ -158,6 +180,11 @@
    wifi_dsm_uart_configurations,		/* Function 5 */
    wifi_dsm_ukrane_russia_11ax_enable,	/* Function 6 */
    wifi_dsm_unii4_control_enable,		/* Function 7 */
+	NULL,					/* Function 8 */
+	NULL,					/* Function 9 */
+	NULL,					/* Function 10 */
+	NULL,					/* Function 11 */
+	wifi_dsm_11be_country_enablement,	/* Function 12 */
 };

/*
diff --git a/src/include/sar.h b/src/include/sar.h
index 8d712de..c201cea 100644
--- a/src/include/sar.h
+++ b/src/include/sar.h
@@ -57,6 +57,7 @@
    uint32_t uart_configurations;
    uint32_t enablement_11ax;
    uint32_t unii_4;
+	uint32_t enablement_11be;
 };

struct sar_header {