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// SPDX-License-Identifier: GPL-2.0+
/*
* Common init part for boards based on SDM845
*
* (C) Copyright 2021 Dzmitry Sankouski <dsankouski@gmail.com>
*/
#include <init.h>
#include <env.h>
#include <common.h>
#include <asm/system.h>
#include <asm/gpio.h>
#include <dm.h>
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
return fdtdec_setup_mem_size_base();
}
void reset_cpu(void)
{
psci_system_reset();
}
__weak int board_init(void)
{
return 0;
}
/* Check for vol- and power buttons */
__weak int misc_init_r(void)
{
struct udevice *pon;
struct gpio_desc resin;
int node, ret;
ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8998_pon@800", &pon);
if (ret < 0) {
printf("Failed to find PMIC pon node. Check device tree\n");
return 0;
}
node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
"key_vol_down");
if (node < 0) {
printf("Failed to find key_vol_down node. Check device tree\n");
return 0;
}
if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
&resin, 0)) {
printf("Failed to request key_vol_down button.\n");
return 0;
}
if (dm_gpio_get_value(&resin)) {
env_set("key_vol_down", "1");
printf("Volume down button pressed\n");
} else {
env_set("key_vol_down", "0");
}
node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
"key_power");
if (node < 0) {
printf("Failed to find key_power node. Check device tree\n");
return 0;
}
if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
&resin, 0)) {
printf("Failed to request key_power button.\n");
return 0;
}
if (dm_gpio_get_value(&resin)) {
env_set("key_power", "1");
printf("Power button pressed\n");
} else {
env_set("key_power", "0");
}
/*
* search for kaslr address, set by primary bootloader by searching first
* 0x100 relocated bytes at u-boot's initial load address range
*/
uintptr_t start = gd->ram_base;
uintptr_t end = start + 0x800000;
u8 *addr = (u8 *)start;
phys_addr_t *relocaddr = (phys_addr_t *)gd->relocaddr;
u32 block_size = 0x1000;
while (memcmp(addr, relocaddr, 0x100) && (uintptr_t)addr < end)
addr += block_size;
if ((uintptr_t)addr >= end)
printf("KASLR not found in range 0x%lx - 0x%lx", start, end);
else
env_set_addr("KASLR", addr);
return 0;
}
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