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M467: Improve Crypto H/W wait helper routine 

Add crypto_xxx_wait2 helper routine to replace crypto_xxx_wait for Crypto H/W control
pull/15337/head
Chun-Chieh Li 2022-04-29 21:24:04 +08:00
parent 3fe95b2fb8
commit d92d75e9ac
2 changed files with 51 additions and 8 deletions
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54
targets/TARGET_NUVOTON/TARGET_M460/crypto/crypto-misc.cpp
View File

@ -24,6 +24,7 @@
#include <limits.h>
#include "nu_modutil.h"
#include "nu_bitutil.h"
#include "nu_timer.h"
#include "crypto-misc.h"
#include "platform/SingletonPtr.h"
#include "platform/PlatformMutex.h"
@ -72,7 +73,7 @@ static volatile uint16_t crypto_ecc_done;
static volatile uint16_t crypto_rsa_done;
static void crypto_submodule_prestart(volatile uint16_t *submodule_done);
static bool crypto_submodule_wait(volatile uint16_t *submodule_done);
static bool crypto_submodule_wait(volatile uint16_t *submodule_done, int32_t timeout_us);
/* As crypto init counter changes from 0 to 1:
*
@ -206,7 +207,12 @@ void crypto_prng_prestart(void)
bool crypto_prng_wait(void)
{
return crypto_submodule_wait(&crypto_prng_done);
return crypto_prng_wait2(-1);
}
bool crypto_prng_wait2(int32_t timeout_us)
{
return crypto_submodule_wait(&crypto_prng_done, timeout_us);
}
void crypto_aes_prestart(void)
@ -216,7 +222,12 @@ void crypto_aes_prestart(void)
bool crypto_aes_wait(void)
{
return crypto_submodule_wait(&crypto_aes_done);
return crypto_aes_wait2(-1);
}
bool crypto_aes_wait2(int32_t timeout_us)
{
return crypto_submodule_wait(&crypto_aes_done, timeout_us);
}
void crypto_sha_prestart(void)
@ -226,7 +237,12 @@ void crypto_sha_prestart(void)
bool crypto_sha_wait(void)
{
return crypto_submodule_wait(&crypto_sha_done);
return crypto_sha_wait2(-1);
}
bool crypto_sha_wait2(int32_t timeout_us)
{
return crypto_submodule_wait(&crypto_sha_done, timeout_us);
}
void crypto_ecc_prestart(void)
@ -236,7 +252,12 @@ void crypto_ecc_prestart(void)
bool crypto_ecc_wait(void)
{
return crypto_submodule_wait(&crypto_ecc_done);
return crypto_ecc_wait2(-1);
}
bool crypto_ecc_wait2(int32_t timeout_us)
{
return crypto_submodule_wait(&crypto_ecc_done, timeout_us);
}
void crypto_rsa_prestart(void)
@ -246,7 +267,12 @@ void crypto_rsa_prestart(void)
bool crypto_rsa_wait(void)
{
return crypto_submodule_wait(&crypto_rsa_done);
return crypto_rsa_wait2(-1);
}
bool crypto_rsa_wait2(int32_t timeout_us)
{
return crypto_submodule_wait(&crypto_rsa_done, timeout_us);
}
bool crypto_dma_buff_compat(const void *buff, size_t buff_size, size_t size_aligned_to)
@ -304,9 +330,21 @@ static void crypto_submodule_prestart(volatile uint16_t *submodule_done)
__DSB();
}
static bool crypto_submodule_wait(volatile uint16_t *submodule_done)
static bool crypto_submodule_wait(volatile uint16_t *submodule_done, int32_t timeout_us)
{
while (! *submodule_done);
/* Translate indefinite to extremely large */
if (timeout_us < 0) {
timeout_us = 0x7FFFFFFF;
}
struct nu_countdown_ctx_s ctx;
nu_countdown_init(&ctx, timeout_us);
while (! *submodule_done) {
if (nu_countdown_expired(&ctx)) {
break;
}
}
nu_countdown_free(&ctx);
/* Ensure while loop above and subsequent code are not reordered */
__DSB();

5
targets/TARGET_NUVOTON/TARGET_M460/crypto/crypto-misc.h
View File

@ -71,14 +71,19 @@ void crypto_rsa_release(void);
*/
void crypto_prng_prestart(void);
bool crypto_prng_wait(void);
bool crypto_prng_wait2(int32_t timeout_us);
void crypto_aes_prestart(void);
bool crypto_aes_wait(void);
bool crypto_aes_wait2(int32_t timeout_us);
void crypto_sha_prestart(void);
bool crypto_sha_wait(void);
bool crypto_sha_wait2(int32_t timeout_us);
void crypto_ecc_prestart(void);
bool crypto_ecc_wait(void);
bool crypto_ecc_wait2(int32_t timeout_us);
void crypto_rsa_prestart(void);
bool crypto_rsa_wait(void);
bool crypto_rsa_wait2(int32_t timeout_us);
/* Check if buffer can be used for crypto DMA. It has the following requirements: