marvell/uboot/drivers/crypto/te200_sha.c

#include <common.h>
#include <sha256.h>
#include <sha1.h>
#include <asm/errno.h>
#include "te200_sha.h"
#include <asm/arch/cpu.h>

static int wait_hash_command_done(int ms)
{
    unsigned int val;
    int timeout = ms*1000;

    do {
        //wait bit0 to be set
        val = TE_REG_READ(TE_HASH_INTR_STAT);
        if (val & 0x1)
            break;
        timeout --;
        udelay(1);
        if(timeout == 0) {
            printf("TE200 hash time out\n\r");
            return -1;
        }
    }while(1);

    TE_REG_WRITE(TE_HASH_INTR_STAT, 0x00000001); //clear int status

    return 0;
}

void sha256_starts_te200(sha256_context * ctx)
{
    unsigned int val;
    int ret = 0;

    (void)ctx;

    val = TE_REG_READ(TE_CLK_CTRL);
	val &= ~1; //open sha clock
	TE_REG_WRITE(TE_CLK_CTRL, val);

	val = TE_REG_READ(TE_CLK_CTRL);
	val |= 1; //open sha clock
	TE_REG_WRITE(TE_CLK_CTRL, val);

	TE_REG_WRITE(TE_HASH_QUEUE, 0x80000041); //hash init cmd, sha-256
	TE_REG_WRITE(TE_HASH_CTRL, 0x00000001); //trigger cmd

	ret = wait_hash_command_done(20);
    return ret;
}

void sha256_update_te200(sha256_context *ctx, const uint8_t *input, uint32_t length)
{
	int ret = 0;
	flush_dcache_range(input, (uint32_t)input + length);
	TE_REG_WRITE(TE_HASH_QUEUE, 0x40000001); //hash proc cmd, big end.(0x40000003: little end)
	TE_REG_WRITE(TE_HASH_QUEUE, (uint32_t)input);
	TE_REG_WRITE(TE_HASH_QUEUE, (uint32_t)length);
	TE_REG_WRITE(TE_HASH_CTRL, 0x00000001);

    /* wait 64ms per 1MB */
	ret = wait_hash_command_done(((length + 0xFFFFF) >> 14));
    return;
}

void sha256_finish_te200(sha256_context * ctx, uint8_t digest[32])
{
	unsigned int val;
    int ret = 0;
    flush_dcache_range(digest, (uint32_t)digest + 32);
	TE_REG_WRITE(TE_HASH_QUEUE, 0x20000081); //hash finish cmd
	TE_REG_WRITE(TE_HASH_QUEUE, (uint32_t)digest);
	TE_REG_WRITE(TE_HASH_CTRL, 0x00000001);

	ret = wait_hash_command_done(100);

	val = TE_REG_READ(TE_CLK_CTRL);
	val &= ~1; //close sha clock
	TE_REG_WRITE(TE_CLK_CTRL, val);

	return;
}