From 2a2096ea6001cc65fa91e2bc622da48c8eb26a06 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 19 Jul 2018 22:35:09 +0200 Subject: tpm: allow TPM v1 and v2 to be compiled at the same time While there is probably no reason to do so in a real life situation, it will allow to compile test both stacks with the same sandbox defconfig. As we cannot define two 'tpm' commands at the same time, the command for TPM v1 is still called 'tpm' and the one for TPM v2 'tpm2'. While this is the exact command name that must be written into eg. test files, any user already using the TPM v2 stack can continue to do so by just writing 'tpm' because as long as TPM v1 support is not compiled, U-Boot prompt will search for the closest command named after 'tpm'. The command set can also be changed at runtime (not supported yet, but ready to be), but as one can compile only either one stack or the other, there is still one spot in the code where conditionals are used: to retrieve the v1 or v2 command set. Signed-off-by: Miquel Raynal Reviewed-by: Simon Glass [trini: In sandbox_tpm2_fill_buf() use NULL not \0 to ensure NULL terminated string due to LLVM warning] Signed-off-by: Tom Rini --- drivers/tpm/Kconfig | 7 ++----- drivers/tpm/tpm-uclass.c | 3 --- drivers/tpm/tpm2_tis_sandbox.c | 5 ++++- drivers/tpm/tpm2_tis_spi.c | 4 ++++ 4 files changed, 10 insertions(+), 9 deletions(-) (limited to 'drivers/tpm') diff --git a/drivers/tpm/Kconfig b/drivers/tpm/Kconfig index da1ed8fd87..782a620f91 100644 --- a/drivers/tpm/Kconfig +++ b/drivers/tpm/Kconfig @@ -4,9 +4,6 @@ menu "TPM support" -comment "Please select only one TPM revision" - depends on TPM_V1 && TPM_V2 - config TPM_V1 bool "TPMv1.x support" depends on TPM @@ -15,7 +12,7 @@ config TPM_V1 Major TPM versions are not compatible at all, choose either one or the other. This option enables TPMv1.x drivers/commands. -if TPM_V1 && !TPM_V2 +if TPM_V1 config TPM_TIS_SANDBOX bool "Enable sandbox TPM driver" @@ -127,7 +124,7 @@ config TPM_V2 Major TPM versions are not compatible at all, choose either one or the other. This option enables TPMv2.x drivers/commands. -if TPM_V2 && !TPM_V1 +if TPM_V2 config TPM2_TIS_SANDBOX bool "Enable sandbox TPMv2.x driver" diff --git a/drivers/tpm/tpm-uclass.c b/drivers/tpm/tpm-uclass.c index 412697eedc..c83f53ab86 100644 --- a/drivers/tpm/tpm-uclass.c +++ b/drivers/tpm/tpm-uclass.c @@ -7,11 +7,8 @@ #include #include #include -#if defined(CONFIG_TPM_V1) #include -#elif defined(CONFIG_TPM_V2) #include -#endif #include "tpm_internal.h" int tpm_open(struct udevice *dev) diff --git a/drivers/tpm/tpm2_tis_sandbox.c b/drivers/tpm/tpm2_tis_sandbox.c index 3240cc5dba..66f6c9ba82 100644 --- a/drivers/tpm/tpm2_tis_sandbox.c +++ b/drivers/tpm/tpm2_tis_sandbox.c @@ -232,7 +232,7 @@ static int sandbox_tpm2_fill_buf(u8 **recv, size_t *recv_len, u16 tag, u32 rc) *recv += sizeof(rc); /* Add trailing \0 */ - *recv = '\0'; + *recv = NULL; return 0; } @@ -590,6 +590,9 @@ static int sandbox_tpm2_probe(struct udevice *dev) struct sandbox_tpm2 *tpm = dev_get_priv(dev); struct tpm_chip_priv *priv = dev_get_uclass_priv(dev); + /* Use the TPM v2 stack */ + priv->version = TPM_V2; + memset(tpm, 0, sizeof(*tpm)); priv->pcr_count = 32; diff --git a/drivers/tpm/tpm2_tis_spi.c b/drivers/tpm/tpm2_tis_spi.c index c5d17a679d..8878130bd7 100644 --- a/drivers/tpm/tpm2_tis_spi.c +++ b/drivers/tpm/tpm2_tis_spi.c @@ -510,6 +510,7 @@ static int tpm_tis_spi_cleanup(struct udevice *dev) static int tpm_tis_spi_open(struct udevice *dev) { struct tpm_chip *chip = dev_get_priv(dev); + struct tpm_chip_priv *priv = dev_get_uclass_priv(dev); if (chip->is_open) return -EBUSY; @@ -575,6 +576,9 @@ static int tpm_tis_spi_probe(struct udevice *dev) struct tpm_chip *chip = dev_get_priv(dev); int ret; + /* Use the TPM v2 stack */ + priv->version = TPM_V2; + if (IS_ENABLED(CONFIG_DM_GPIO)) { struct gpio_desc reset_gpio; -- cgit v1.2.3