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// SPDX-License-Identifier: GPL-2.0+
/*
* Miscellaneous Snapdragon functionality
*
* (C) Copyright 2018 Ramon Fried <ramon.fried@gmail.com>
*
*/
#include <common.h>
#include <mmc.h>
#include <asm/arch/misc.h>
/* UNSTUFF_BITS macro taken from Linux Kernel: drivers/mmc/core/sd.c */
#define UNSTUFF_BITS(resp, start, size) \
({ \
const int __size = size; \
const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
const int __off = 3 - ((start) / 32); \
const int __shft = (start) & 31; \
u32 __res; \
\
__res = resp[__off] >> __shft; \
if (__size + __shft > 32) \
__res |= resp[__off - 1] << ((32 - __shft) % 32); \
__res & __mask; \
})
u32 msm_board_serial(void)
{
struct mmc *mmc_dev;
mmc_dev = find_mmc_device(0);
if (!mmc_dev)
return 0;
return UNSTUFF_BITS(mmc_dev->cid, 16, 32);
}
void msm_generate_mac_addr(u8 *mac)
{
int i;
char sn[9];
snprintf(sn, 9, "%08x", msm_board_serial());
/* fill in the mac with serialno, use locally adminstrated pool */
mac[0] = 0x02;
mac[1] = 00;
for (i = 3; i >= 0; i--) {
mac[i + 2] = simple_strtoul(&sn[2 * i], NULL, 16);
sn[2 * i] = 0;
}
}
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