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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*
* Authors:
* Damien Le Moal <damien.lemoal@wdc.com>
*/
#include <sbi/riscv_encoding.h>
#include <sbi/sbi_const.h>
#include <sbi/sbi_hart.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_console.h>
#include <sbi_utils/irqchip/plic.h>
#include <sbi_utils/sys/clint.h>
#include <sbi_utils/serial/sifive-uart.h>
#include "platform.h"
#include "sysctl.h"
#define K210_UART_BASE_ADDR 0x38000000U
#define K210_UART_BAUDRATE 115200
static int k210_console_init(void)
{
return sifive_uart_init(K210_UART_BASE_ADDR,
sysctl_get_cpu_freq(), K210_UART_BAUDRATE);
}
static int k210_irqchip_init(bool cold_boot)
{
int rc;
u32 hartid = sbi_current_hartid();
if (cold_boot) {
rc = plic_cold_irqchip_init(PLIC_BASE_ADDR, PLIC_NUM_SOURCES,
K210_HART_COUNT);
if (rc)
return rc;
}
return plic_warm_irqchip_init(hartid, (2 * hartid), (2 * hartid + 1));
}
static int k210_ipi_init(bool cold_boot)
{
int rc;
if (cold_boot) {
rc = clint_cold_ipi_init(CLINT_BASE_ADDR, K210_HART_COUNT);
if (rc)
return rc;
}
return clint_warm_ipi_init();
}
static int k210_timer_init(bool cold_boot)
{
int rc;
if (cold_boot) {
rc = clint_cold_timer_init(CLINT_BASE_ADDR, K210_HART_COUNT);
if (rc)
return rc;
}
return clint_warm_timer_init();
}
static int k210_system_reboot(u32 type)
{
/* For now nothing to do. */
sbi_printf("System reboot\n");
return 0;
}
static int k210_system_shutdown(u32 type)
{
/* For now nothing to do. */
sbi_printf("System shutdown\n");
return 0;
}
const struct sbi_platform_operations platform_ops = {
.console_init = k210_console_init,
.console_putc = sifive_uart_putc,
.console_getc = sifive_uart_getc,
.irqchip_init = k210_irqchip_init,
.ipi_init = k210_ipi_init,
.ipi_send = clint_ipi_send,
.ipi_clear = clint_ipi_clear,
.timer_init = k210_timer_init,
.timer_value = clint_timer_value,
.timer_event_stop = clint_timer_event_stop,
.timer_event_start = clint_timer_event_start,
.system_reboot = k210_system_reboot,
.system_shutdown = k210_system_shutdown
};
const struct sbi_platform platform = {
.opensbi_version = OPENSBI_VERSION,
.platform_version = SBI_PLATFORM_VERSION(0x0, 0x01),
.name = "Kendryte K210",
.features = SBI_PLATFORM_HAS_TIMER_VALUE,
.hart_count = K210_HART_COUNT,
.hart_stack_size = K210_HART_STACK_SIZE,
.disabled_hart_mask = 0,
.platform_ops_addr = (unsigned long)&platform_ops
};
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