mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-16 23:18:51 +09:00
137 lines
2.8 KiB
C
137 lines
2.8 KiB
C
![]() |
// SPDX-License-Identifier: GPL-2.0+
|
||
|
/*
|
||
|
* Copyright (C) 2018 Marek Behun <marek.behun@nic.cz>
|
||
|
*/
|
||
|
|
||
|
#include <common.h>
|
||
|
#include <asm/io.h>
|
||
|
|
||
|
#define RWTM_CMD_PARAM(i) (size_t)(0xd00b0000 + (i) * 4)
|
||
|
#define RWTM_CMD 0xd00b0040
|
||
|
#define RWTM_CMD_RETSTATUS 0xd00b0080
|
||
|
#define RWTM_CMD_STATUS(i) (size_t)(0xd00b0084 + (i) * 4)
|
||
|
|
||
|
#define RWTM_HOST_INT_RESET 0xd00b00c8
|
||
|
#define RWTM_HOST_INT_MASK 0xd00b00cc
|
||
|
#define SP_CMD_COMPLETE BIT(0)
|
||
|
|
||
|
#define MBOX_STS_SUCCESS (0x0 << 30)
|
||
|
#define MBOX_STS_FAIL (0x1 << 30)
|
||
|
#define MBOX_STS_BADCMD (0x2 << 30)
|
||
|
#define MBOX_STS_LATER (0x3 << 30)
|
||
|
#define MBOX_STS_ERROR(s) ((s) & (3 << 30))
|
||
|
#define MBOX_STS_VALUE(s) (((s) >> 10) & 0xfffff)
|
||
|
#define MBOX_STS_CMD(s) ((s) & 0x3ff)
|
||
|
|
||
|
enum mbox_cmd {
|
||
|
MBOX_CMD_GET_RANDOM = 1,
|
||
|
MBOX_CMD_BOARD_INFO,
|
||
|
MBOX_CMD_ECDSA_PUB_KEY,
|
||
|
MBOX_CMD_HASH,
|
||
|
MBOX_CMD_SIGN,
|
||
|
MBOX_CMD_VERIFY,
|
||
|
|
||
|
MBOX_CMD_OTP_READ,
|
||
|
MBOX_CMD_OTP_WRITE
|
||
|
};
|
||
|
|
||
|
static int mbox_do_cmd(enum mbox_cmd cmd, u32 *out, int nout)
|
||
|
{
|
||
|
const int tries = 50;
|
||
|
int i;
|
||
|
u32 status;
|
||
|
|
||
|
clrbits_le32(RWTM_HOST_INT_MASK, SP_CMD_COMPLETE);
|
||
|
|
||
|
writel(cmd, RWTM_CMD);
|
||
|
|
||
|
for (i = 0; i < tries; ++i) {
|
||
|
mdelay(10);
|
||
|
if (readl(RWTM_HOST_INT_RESET) & SP_CMD_COMPLETE)
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (i == tries) {
|
||
|
/* if timed out, don't read status */
|
||
|
setbits_le32(RWTM_HOST_INT_RESET, SP_CMD_COMPLETE);
|
||
|
return -ETIMEDOUT;
|
||
|
}
|
||
|
|
||
|
for (i = 0; i < nout; ++i)
|
||
|
out[i] = readl(RWTM_CMD_STATUS(i));
|
||
|
status = readl(RWTM_CMD_RETSTATUS);
|
||
|
|
||
|
setbits_le32(RWTM_HOST_INT_RESET, SP_CMD_COMPLETE);
|
||
|
|
||
|
if (MBOX_STS_CMD(status) != cmd)
|
||
|
return -EIO;
|
||
|
else if (MBOX_STS_ERROR(status) == MBOX_STS_FAIL)
|
||
|
return -(int)MBOX_STS_VALUE(status);
|
||
|
else if (MBOX_STS_ERROR(status) != MBOX_STS_SUCCESS)
|
||
|
return -EIO;
|
||
|
else
|
||
|
return MBOX_STS_VALUE(status);
|
||
|
}
|
||
|
|
||
|
const char *mox_sp_get_ecdsa_public_key(void)
|
||
|
{
|
||
|
static char public_key[135];
|
||
|
u32 out[16];
|
||
|
int res;
|
||
|
|
||
|
if (public_key[0])
|
||
|
return public_key;
|
||
|
|
||
|
res = mbox_do_cmd(MBOX_CMD_ECDSA_PUB_KEY, out, 16);
|
||
|
if (res < 0)
|
||
|
return NULL;
|
||
|
|
||
|
sprintf(public_key,
|
||
|
"%06x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x",
|
||
|
(u32)res, out[0], out[1], out[2], out[3], out[4], out[5],
|
||
|
out[6], out[7], out[8], out[9], out[10], out[11], out[12],
|
||
|
out[13], out[14], out[15]);
|
||
|
|
||
|
return public_key;
|
||
|
}
|
||
|
|
||
|
static inline void res_to_mac(u8 *mac, u32 t1, u32 t2)
|
||
|
{
|
||
|
mac[0] = t1 >> 8;
|
||
|
mac[1] = t1;
|
||
|
mac[2] = t2 >> 24;
|
||
|
mac[3] = t2 >> 16;
|
||
|
mac[4] = t2 >> 8;
|
||
|
mac[5] = t2;
|
||
|
}
|
||
|
|
||
|
int mbox_sp_get_board_info(u64 *sn, u8 *mac1, u8 *mac2, int *bv, int *ram)
|
||
|
{
|
||
|
u32 out[8];
|
||
|
int res;
|
||
|
|
||
|
res = mbox_do_cmd(MBOX_CMD_BOARD_INFO, out, 8);
|
||
|
if (res < 0)
|
||
|
return res;
|
||
|
|
||
|
if (sn) {
|
||
|
*sn = out[1];
|
||
|
*sn <<= 32;
|
||
|
*sn |= out[0];
|
||
|
}
|
||
|
|
||
|
if (bv)
|
||
|
*bv = out[2];
|
||
|
|
||
|
if (ram)
|
||
|
*ram = out[3];
|
||
|
|
||
|
if (mac1)
|
||
|
res_to_mac(mac1, out[4], out[5]);
|
||
|
|
||
|
if (mac2)
|
||
|
res_to_mac(mac2, out[6], out[7]);
|
||
|
|
||
|
return 0;
|
||
|
}
|