forked from Mirrors/opensbi
a9a9751185
We extend CLINT cold init function to have a "struct clint_data *" parameter pointing to CLINT details. This allows platforms to use CLINT functions for multiple CLINT instances. When multiple CLINTs are present, the platform can also provide one of the CLINT as reference CLINT for other CLINTs. This will help CLINTs to sync their time value with reference CLINT using a time_delta computed in warm init function. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
154 lines
3.3 KiB
C
154 lines
3.3 KiB
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) Nuclei Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* lujun <lujun@nucleisys.com>
|
|
* hqfang <578567190@qq.com>
|
|
*/
|
|
|
|
#include <libfdt.h>
|
|
#include <sbi/riscv_asm.h>
|
|
#include <sbi/riscv_io.h>
|
|
#include <sbi/riscv_encoding.h>
|
|
#include <sbi/sbi_console.h>
|
|
#include <sbi/sbi_const.h>
|
|
#include <sbi/sbi_platform.h>
|
|
#include <sbi_utils/fdt/fdt_fixup.h>
|
|
#include <sbi_utils/irqchip/plic.h>
|
|
#include <sbi_utils/serial/sifive-uart.h>
|
|
#include <sbi_utils/sys/clint.h>
|
|
|
|
/* clang-format off */
|
|
|
|
#define UX600_HART_COUNT 1
|
|
|
|
#define UX600_SYS_CLK 1000000000
|
|
|
|
/* Nuclei timer base address */
|
|
#define UX600_NUCLEI_TIMER_ADDR 0x2000000
|
|
/* The clint compatiable timer offset is 0x1000 against nuclei timer */
|
|
#define UX600_CLINT_TIMER_ADDR (UX600_NUCLEI_TIMER_ADDR + 0x1000)
|
|
|
|
#define UX600_PLIC_ADDR 0x8000000
|
|
#define UX600_PLIC_NUM_SOURCES 0x35
|
|
#define UX600_PLIC_NUM_PRIORITIES 7
|
|
|
|
#define UX600_UART0_ADDR 0x10013000
|
|
#define UX600_UART1_ADDR 0x10023000
|
|
|
|
#define UX600_DEBUG_UART UX600_UART0_ADDR
|
|
#define UX600_UART_BAUDRATE 115200
|
|
|
|
/* clang-format on */
|
|
|
|
static struct plic_data plic = {
|
|
.addr = UX600_PLIC_ADDR,
|
|
.num_src = UX600_PLIC_NUM_SOURCES,
|
|
};
|
|
|
|
static struct clint_data clint = {
|
|
.addr = UX600_CLINT_TIMER_ADDR,
|
|
.first_hartid = 0,
|
|
.hart_count = UX600_HART_COUNT,
|
|
.has_64bit_mmio = TRUE,
|
|
};
|
|
|
|
static void ux600_modify_dt(void *fdt)
|
|
{
|
|
fdt_fixups(fdt);
|
|
}
|
|
|
|
static int ux600_final_init(bool cold_boot)
|
|
{
|
|
void *fdt;
|
|
|
|
if (!cold_boot)
|
|
return 0;
|
|
|
|
fdt = sbi_scratch_thishart_arg1_ptr();
|
|
ux600_modify_dt(fdt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ux600_console_init(void)
|
|
{
|
|
return sifive_uart_init(UX600_DEBUG_UART, UX600_SYS_CLK,
|
|
UX600_UART_BAUDRATE);
|
|
}
|
|
|
|
static int ux600_irqchip_init(bool cold_boot)
|
|
{
|
|
int rc;
|
|
u32 hartid = current_hartid();
|
|
|
|
if (cold_boot) {
|
|
rc = plic_cold_irqchip_init(&plic);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
return plic_warm_irqchip_init(&plic, (hartid) ? (2 * hartid - 1) : 0,
|
|
(hartid) ? (2 * hartid) : -1);
|
|
}
|
|
|
|
static int ux600_ipi_init(bool cold_boot)
|
|
{
|
|
int rc;
|
|
|
|
if (cold_boot) {
|
|
rc = clint_cold_ipi_init(&clint);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
return clint_warm_ipi_init();
|
|
}
|
|
|
|
static int ux600_timer_init(bool cold_boot)
|
|
{
|
|
int rc;
|
|
|
|
if (cold_boot) {
|
|
rc = clint_cold_timer_init(&clint, NULL);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
return clint_warm_timer_init();
|
|
}
|
|
|
|
static int ux600_system_reset(u32 type)
|
|
{
|
|
/* For now nothing to do. */
|
|
return 0;
|
|
}
|
|
|
|
const struct sbi_platform_operations platform_ops = {
|
|
.final_init = ux600_final_init,
|
|
.console_putc = sifive_uart_putc,
|
|
.console_getc = sifive_uart_getc,
|
|
.console_init = ux600_console_init,
|
|
.irqchip_init = ux600_irqchip_init,
|
|
.ipi_send = clint_ipi_send,
|
|
.ipi_clear = clint_ipi_clear,
|
|
.ipi_init = ux600_ipi_init,
|
|
.timer_value = clint_timer_value,
|
|
.timer_event_stop = clint_timer_event_stop,
|
|
.timer_event_start = clint_timer_event_start,
|
|
.timer_init = ux600_timer_init,
|
|
.system_reset = ux600_system_reset
|
|
};
|
|
|
|
const struct sbi_platform platform = {
|
|
.opensbi_version = OPENSBI_VERSION,
|
|
.platform_version = SBI_PLATFORM_VERSION(0x0U, 0x01U),
|
|
.name = "Nuclei UX600",
|
|
.features = SBI_PLATFORM_DEFAULT_FEATURES,
|
|
.hart_count = UX600_HART_COUNT,
|
|
.hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
|
|
.platform_ops_addr = (unsigned long)&platform_ops
|
|
};
|