[[PATCH v2] tpm: Add wolfTPM library support for TPM 2.0 12/12] configs: enable wolfTPM in rpi_4_defconfig

[David Garske <david@wolfssl.com>]

From: Aidan <aidan@wolfssl.com>

Enable SPI, TPM, and wolfTPM support in the Raspberry Pi 4 default
configuration for out-of-the-box TPM 2.0 support with Infineon
SLB9670/9672 TPM HATs.

SPI support:
  CONFIG_SPI, CONFIG_DM_SPI, CONFIG_BCM2835_SPI, CONFIG_CMD_SPI
  Enables the BCM2835 hardware SPI driver. Soft SPI is disabled
  since the hardware driver is used.

TPM and wolfTPM:
  CONFIG_TPM, CONFIG_TPM_V2, CONFIG_CMD_TPM: core TPM support
  CONFIG_TPM_WOLF: wolfTPM library integration
  CONFIG_CMD_WOLFTPM: wolfTPM command backend for tpm2
  CONFIG_WOLFTPM_SLB9672: Infineon SLB9672 chip support
  WOLFTPM_LINUX_DEV disabled: uses native wolfTPM TIS layer with
  direct SPI communication rather than U-Boot's TPM driver model

Logging:
  CONFIG_LOG with level 7 (DEBUG) to enable log_debug() output
  from wolfTPM commands.

Testing:
  CONFIG_UNIT_TEST, CONFIG_CONSOLE_RECORD, CONFIG_HEXDUMP for
  running the wolfTPM C unit test suite.

Signed-off-by: Aidan Garske <aidan@wolfssl.com>
---
 configs/rpi_4_defconfig | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/configs/rpi_4_defconfig b/configs/rpi_4_defconfig
index 8362242b97f..22280d9b70e 100644
--- a/configs/rpi_4_defconfig
+++ b/configs/rpi_4_defconfig
@@ -69,4 +69,31 @@ CONFIG_SYS_WHITE_ON_BLACK=y
 CONFIG_VIDEO_BCM2835=y
 CONFIG_CONSOLE_SCROLL_LINES=10
 CONFIG_PHYS_TO_BUS=y
-# CONFIG_HEXDUMP is not set
+# HEXDUMP enabled for unit tests
+
+# SPI support (hardware SPI - matches Linux tpm-slb9670 overlay)
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_BCM2835_SPI=y
+# CONFIG_SOFT_SPI is not set
+CONFIG_CMD_SPI=y
+
+# TPM and wolfTPM support
+CONFIG_TPM=y
+CONFIG_TPM_V2=y
+CONFIG_CMD_TPM=y
+CONFIG_TPM_WOLF=y
+# CONFIG_WOLFTPM_LINUX_DEV is not set
+CONFIG_WOLFTPM_SLB9672=y
+CONFIG_CMD_WOLFTPM=y
+
+# Logging (debug level to see log_debug output)
+CONFIG_LOG=y
+CONFIG_LOGLEVEL=7
+CONFIG_LOG_MAX_LEVEL=7
+CONFIG_LOG_DEFAULT_LEVEL=7
+
+# Unit testing support
+CONFIG_UNIT_TEST=y
+CONFIG_CONSOLE_RECORD=y
+CONFIG_HEXDUMP=y
-- 
2.43.0