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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2011 Linaro Limited
* Aneesh V <aneesh@ti.com>
*/
#include <env.h>
#include <part.h>
#include <vsprintf.h>
#include <asm/setup.h>
#include <asm/arch/sys_proto.h>
#include <asm/omap_common.h>
#include <linux/printk.h>
static void do_cancel_out(u32 *num, u32 *den, u32 factor)
{
while (1) {
if (((*num)/factor*factor == (*num)) &&
((*den)/factor*factor == (*den))) {
(*num) /= factor;
(*den) /= factor;
} else
break;
}
}
#ifdef CONFIG_FASTBOOT_FLASH
static void omap_set_fastboot_cpu(void)
{
char *cpu;
u32 cpu_rev = omap_revision();
switch (cpu_rev) {
case DRA762_ES1_0:
case DRA762_ABZ_ES1_0:
case DRA762_ACD_ES1_0:
cpu = "DRA762";
break;
case DRA752_ES1_0:
case DRA752_ES1_1:
case DRA752_ES2_0:
cpu = "DRA752";
break;
case DRA722_ES1_0:
case DRA722_ES2_0:
case DRA722_ES2_1:
cpu = "DRA722";
break;
default:
cpu = NULL;
printf("Warning: fastboot.cpu: unknown CPU rev: %u\n", cpu_rev);
}
env_set("fastboot.cpu", cpu);
}
static void omap_set_fastboot_secure(void)
{
const char *secure;
u32 dev = get_device_type();
switch (dev) {
case EMU_DEVICE:
secure = "EMU";
break;
case HS_DEVICE:
secure = "HS";
break;
case GP_DEVICE:
secure = "GP";
break;
default:
secure = NULL;
printf("Warning: fastboot.secure: unknown CPU sec: %u\n", dev);
}
env_set("fastboot.secure", secure);
}
static void omap_set_fastboot_board_rev(void)
{
const char *board_rev;
board_rev = env_get("board_rev");
if (board_rev == NULL)
printf("Warning: fastboot.board_rev: unknown board revision\n");
env_set("fastboot.board_rev", board_rev);
}
#ifdef CONFIG_FASTBOOT_FLASH_MMC
static u32 omap_mmc_get_part_size(const char *part)
{
int res;
struct blk_desc *dev_desc;
struct disk_partition info;
u64 sz = 0;
dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
pr_err("invalid mmc device\n");
return 0;
}
res = part_get_info_by_name(dev_desc, part, &info);
if (res < 0)
return 0;
/* Calculate size in bytes */
sz = (info.size * (u64)info.blksz);
/* to KiB */
sz >>= 10;
return (u32)sz;
}
static void omap_set_fastboot_userdata_size(void)
{
char buf[16];
u32 sz_kb;
sz_kb = omap_mmc_get_part_size("userdata");
if (sz_kb == 0)
return; /* probably it's not Android partition table */
sprintf(buf, "%u", sz_kb);
env_set("fastboot.userdata_size", buf);
}
#else
static inline void omap_set_fastboot_userdata_size(void)
{
}
#endif /* CONFIG_FASTBOOT_FLASH_MMC */
static void omap_set_fastboot_product(void)
{
const char *board_name;
board_name = env_get("board_name");
if (board_name == NULL)
printf("Warning: fastboot.product: unknown board\n");
env_set("fastboot.product", board_name);
}
void omap_set_fastboot_vars(void)
{
omap_set_fastboot_cpu();
omap_set_fastboot_secure();
omap_set_fastboot_board_rev();
omap_set_fastboot_userdata_size();
omap_set_fastboot_product();
}
#endif /* CONFIG_FASTBOOT_FLASH */
/*
* Cancel out the denominator and numerator of a fraction
* to get smaller numerator and denominator.
*/
void cancel_out(u32 *num, u32 *den, u32 den_limit)
{
do_cancel_out(num, den, 2);
do_cancel_out(num, den, 3);
do_cancel_out(num, den, 5);
do_cancel_out(num, den, 7);
do_cancel_out(num, den, 11);
do_cancel_out(num, den, 13);
do_cancel_out(num, den, 17);
while ((*den) > den_limit) {
*num /= 2;
/*
* Round up the denominator so that the final fraction
* (num/den) is always <= the desired value
*/
*den = (*den + 1) / 2;
}
}
__weak void omap_die_id(unsigned int *die_id)
{
die_id[0] = die_id[1] = die_id[2] = die_id[3] = 0;
}
void omap_die_id_serial(void)
{
unsigned int die_id[4] = { 0 };
char serial_string[17] = { 0 };
omap_die_id((unsigned int *)&die_id);
if (!env_get("serial#")) {
snprintf(serial_string, sizeof(serial_string),
"%08x%08x", die_id[0], die_id[3]);
env_set("serial#", serial_string);
}
}
void omap_die_id_get_board_serial(struct tag_serialnr *serialnr)
{
char *serial_string;
unsigned long long serial;
serial_string = env_get("serial#");
if (serial_string) {
serial = simple_strtoull(serial_string, NULL, 16);
serialnr->high = (unsigned int) (serial >> 32);
serialnr->low = (unsigned int) (serial & 0xffffffff);
} else {
serialnr->high = 0;
serialnr->low = 0;
}
}
void omap_die_id_usbethaddr(void)
{
unsigned int die_id[4] = { 0 };
unsigned char mac[6] = { 0 };
omap_die_id((unsigned int *)&die_id);
if (!env_get("usbethaddr")) {
/*
* Create a fake MAC address from the processor ID code.
* First byte is 0x02 to signify locally administered.
*/
mac[0] = 0x02;
mac[1] = die_id[3] & 0xff;
mac[2] = die_id[2] & 0xff;
mac[3] = die_id[1] & 0xff;
mac[4] = die_id[0] & 0xff;
mac[5] = (die_id[0] >> 8) & 0xff;
eth_env_set_enetaddr("usbethaddr", mac);
if (!env_get("ethaddr"))
eth_env_set_enetaddr("ethaddr", mac);
}
}
void omap_die_id_display(void)
{
unsigned int die_id[4] = { 0 };
omap_die_id(die_id);
printf("OMAP die ID: %08x%08x%08x%08x\n", die_id[3], die_id[2],
die_id[1], die_id[0]);
}
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