blob: 8a743bfee2901a62cfe039db737c5410f54d7c97 [file] [log] [blame]
/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <drivers/console.h>
#include <drivers/gpio.h>
#include <libfdt.h>
#include <lib/coreboot.h>
#include <lib/mmio.h>
#include <plat/common/platform.h>
#include <plat_params.h>
#include <plat_private.h>
static struct gpio_info param_reset;
static struct gpio_info param_poweroff;
static struct bl31_apio_param param_apio;
static struct gpio_info *rst_gpio;
static struct gpio_info *poweroff_gpio;
static struct gpio_info suspend_gpio[10];
uint32_t suspend_gpio_cnt;
static struct apio_info *suspend_apio;
static uint32_t rk_uart_base = PLAT_RK_UART_BASE;
uint32_t rockchip_get_uart_base(void)
{
return rk_uart_base;
}
#if COREBOOT
static int dt_process_fdt(void *blob)
{
return -ENODEV;
}
#else
static uint8_t fdt_buffer[0x10000];
void *plat_get_fdt(void)
{
return &fdt_buffer[0];
}
static void plat_rockchip_dt_process_fdt_uart(void *fdt)
{
const char *path_name = "/chosen";
const char *prop_name = "stdout-path";
int node_offset;
int stdout_path_len;
const char *stdout_path;
char serial_char;
int serial_no;
uint32_t uart_base;
node_offset = fdt_path_offset(fdt, path_name);
if (node_offset < 0)
return;
stdout_path = fdt_getprop(fdt, node_offset, prop_name,
&stdout_path_len);
if (stdout_path == NULL)
return;
/*
* We expect something like:
* "serial0:...""
*/
if (strncmp("serial", stdout_path, 6) != 0)
return;
serial_char = stdout_path[6];
serial_no = serial_char - '0';
switch (serial_no) {
case 0:
uart_base = UART0_BASE;
break;
case 1:
uart_base = UART1_BASE;
break;
case 2:
uart_base = UART2_BASE;
break;
#ifdef UART3_BASE
case 3:
uart_base = UART3_BASE;
break;
#endif
#ifdef UART4_BASE
case 4:
uart_base = UART4_BASE;
break;
#endif
default:
return;
}
rk_uart_base = uart_base;
}
static int dt_process_fdt(void *blob)
{
void *fdt = plat_get_fdt();
int ret;
ret = fdt_open_into(blob, fdt, 0x10000);
if (ret < 0)
return ret;
plat_rockchip_dt_process_fdt_uart(fdt);
return 0;
}
#endif
struct gpio_info *plat_get_rockchip_gpio_reset(void)
{
return rst_gpio;
}
struct gpio_info *plat_get_rockchip_gpio_poweroff(void)
{
return poweroff_gpio;
}
struct gpio_info *plat_get_rockchip_suspend_gpio(uint32_t *count)
{
*count = suspend_gpio_cnt;
return &suspend_gpio[0];
}
struct apio_info *plat_get_rockchip_suspend_apio(void)
{
return suspend_apio;
}
void params_early_setup(void *plat_param_from_bl2)
{
struct bl31_plat_param *bl2_param;
struct bl31_gpio_param *gpio_param;
/*
* Test if this is a FDT passed as a platform-specific parameter
* block.
*/
if (!dt_process_fdt(plat_param_from_bl2))
return;
/* keep plat parameters for later processing if need */
bl2_param = (struct bl31_plat_param *)plat_param_from_bl2;
while (bl2_param) {
switch (bl2_param->type) {
case PARAM_RESET:
gpio_param = (struct bl31_gpio_param *)bl2_param;
memcpy(&param_reset, &gpio_param->gpio,
sizeof(struct gpio_info));
rst_gpio = &param_reset;
break;
case PARAM_POWEROFF:
gpio_param = (struct bl31_gpio_param *)bl2_param;
memcpy(&param_poweroff, &gpio_param->gpio,
sizeof(struct gpio_info));
poweroff_gpio = &param_poweroff;
break;
case PARAM_SUSPEND_GPIO:
if (suspend_gpio_cnt >= ARRAY_SIZE(suspend_gpio)) {
ERROR("exceed support suspend gpio number\n");
break;
}
gpio_param = (struct bl31_gpio_param *)bl2_param;
memcpy(&suspend_gpio[suspend_gpio_cnt],
&gpio_param->gpio,
sizeof(struct gpio_info));
suspend_gpio_cnt++;
break;
case PARAM_SUSPEND_APIO:
memcpy(&param_apio, bl2_param,
sizeof(struct bl31_apio_param));
suspend_apio = &param_apio.apio;
break;
#if COREBOOT
case PARAM_COREBOOT_TABLE:
coreboot_table_setup((void *)
((struct bl31_u64_param *)bl2_param)->value);
break;
#endif
default:
ERROR("not expected type found %lld\n",
bl2_param->type);
break;
}
bl2_param = bl2_param->next;
}
}