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// SPDX-License-Identifier: GPL-2.0+
/*
* Board init file for Dragonboard 410C
*
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
*/
#include <button.h>
#include <common.h>
#include <cpu_func.h>
#include <dm.h>
#include <dm/pinctrl.h>
#include <env.h>
#include <init.h>
#include <mmc.h>
#include <net.h>
#include <usb.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <asm/gpio.h>
#include <fdt_support.h>
#include <linux/delay.h>
DECLARE_GLOBAL_DATA_PTR;
#define USB_HUB_RESET_GPIO 2
#define USB_SW_SELECT_GPIO 3
int board_usb_init(int index, enum usb_init_type init)
{
struct udevice *usb;
int ret = 0;
/* USB device */
ret = device_find_global_by_ofnode(ofnode_path("/soc/usb"), &usb);
if (ret) {
printf("Cannot find USB device\n");
return ret;
}
/* Select "default" or "device" pinctrl */
switch (init) {
case USB_INIT_HOST:
pinctrl_select_state(usb, "default");
break;
case USB_INIT_DEVICE:
pinctrl_select_state(usb, "device");
break;
default:
debug("Unknown usb_init_type %d\n", init);
break;
}
return 0;
}
/* 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; \
})
static u32 msm_board_serial(void)
{
struct mmc *mmc_dev;
mmc_dev = find_mmc_device(0);
if (!mmc_dev)
return 0;
if (mmc_init(mmc_dev))
return 0;
return UNSTUFF_BITS(mmc_dev->cid, 16, 32);
}
static void msm_generate_mac_addr(u8 *mac)
{
/* use locally adminstrated pool */
mac[0] = 0x02;
mac[1] = 0x00;
/*
* Put the 32-bit serial number in the last 32-bit of the MAC address.
* Use big endian order so it is consistent with the serial number
* written as a hexadecimal string, e.g. 0x1234abcd -> 02:00:12:34:ab:cd
*/
put_unaligned_be32(msm_board_serial(), &mac[2]);
}
/* Check for vol- button - if pressed - stop autoboot */
int misc_init_r(void)
{
struct udevice *btn;
int ret;
enum button_state_t state;
ret = button_get_by_label("vol_down", &btn);
if (ret < 0) {
printf("Couldn't find power button!\n");
return ret;
}
state = button_get_state(btn);
if (state == BUTTON_ON) {
env_set("preboot", "setenv preboot; fastboot 0");
printf("vol_down pressed - Starting fastboot.\n");
}
return 0;
}
int board_init(void)
{
return 0;
}
int board_late_init(void)
{
char serial[16];
memset(serial, 0, 16);
snprintf(serial, 13, "%x", msm_board_serial());
env_set("serial#", serial);
return 0;
}
/* Fixup of DTB for Linux Kernel
* 1. Fixup installed DRAM.
* 2. Fixup WLAN/BT Mac address:
* First, check if MAC addresses for WLAN/BT exists as environemnt
* variables wlanaddr,btaddr. if not, generate a unique address.
*/
int ft_board_setup(void *blob, struct bd_info *bd)
{
u8 mac[ARP_HLEN];
if (!eth_env_get_enetaddr("wlanaddr", mac)) {
msm_generate_mac_addr(mac);
};
do_fixup_by_compat(blob, "qcom,wcnss-wlan",
"local-mac-address", mac, ARP_HLEN, 1);
if (!eth_env_get_enetaddr("btaddr", mac)) {
msm_generate_mac_addr(mac);
/* The BD address is same as WLAN MAC address but with
* least significant bit flipped.
*/
mac[0] ^= 0x01;
};
do_fixup_by_compat(blob, "qcom,wcnss-bt",
"local-bd-address", mac, ARP_HLEN, 1);
return 0;
}
void reset_cpu(void)
{
psci_system_reset();
}
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