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tpm: add kconfig control in tcg2_create_digest()

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To allow disabling algorithms for tcg2, in function
tcg2_create_digest(), each hash algorithm operations should under
the hash kconfig control to avoid building errors when the algorithm
is disabled.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Raymond Mao
2024-12-24 08:01:13 -08:00
committed by Simon Glass
parent aa31006fff
commit c6cf5fae82
1 changed files with 14 additions and 0 deletions
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14
lib/tpm_tcg2.c
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@@ -96,9 +96,15 @@ int tcg2_create_digest(struct udevice *dev, const u8 *input, u32 length,
{
struct tpm_chip_priv *priv = dev_get_uclass_priv(dev);
u8 final[sizeof(union tpmu_ha)];
#if IS_ENABLED(CONFIG_SHA256)
sha256_context ctx_256;
#endif
#if IS_ENABLED(CONFIG_SHA512)
sha512_context ctx_512;
#endif
#if IS_ENABLED(CONFIG_SHA1)
sha1_context ctx;
#endif
size_t i;
u32 len;
@@ -106,30 +112,38 @@ int tcg2_create_digest(struct udevice *dev, const u8 *input, u32 length,
for (i = 0; i < priv->active_bank_count; i++) {
switch (priv->active_banks[i]) {
#if IS_ENABLED(CONFIG_SHA1)
case TPM2_ALG_SHA1:
sha1_starts(&ctx);
sha1_update(&ctx, input, length);
sha1_finish(&ctx, final);
len = TPM2_SHA1_DIGEST_SIZE;
break;
#endif
#if IS_ENABLED(CONFIG_SHA256)
case TPM2_ALG_SHA256:
sha256_starts(&ctx_256);
sha256_update(&ctx_256, input, length);
sha256_finish(&ctx_256, final);
len = TPM2_SHA256_DIGEST_SIZE;
break;
#endif
#if IS_ENABLED(CONFIG_SHA384)
case TPM2_ALG_SHA384:
sha384_starts(&ctx_512);
sha384_update(&ctx_512, input, length);
sha384_finish(&ctx_512, final);
len = TPM2_SHA384_DIGEST_SIZE;
break;
#endif
#if IS_ENABLED(CONFIG_SHA512)
case TPM2_ALG_SHA512:
sha512_starts(&ctx_512);
sha512_update(&ctx_512, input, length);
sha512_finish(&ctx_512, final);
len = TPM2_SHA512_DIGEST_SIZE;
break;
#endif
default:
printf("%s: unsupported algorithm %x\n", __func__,
priv->active_banks[i]);