Files
opensbi/platform/template/platform.c
Anup Patel 85f22b38c8 include: sbi: Remove platform specific IPI init
The platform specfic IPI init is not need anymore because using
IPI device rating multiple IPI devices can be registered in any
order as part of the platform specific early init.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Tested-by: Nick Hu <nick.hu@sifive.com>
Link: https://lore.kernel.org/r/20250904052410.546818-3-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
2025-09-16 09:56:31 +05:30

132 lines
3.3 KiB
C

/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*/
#include <sbi/riscv_asm.h>
#include <sbi/riscv_encoding.h>
#include <sbi/sbi_const.h>
#include <sbi/sbi_platform.h>
/*
* Include these files as needed.
* See objects.mk PLATFORM_xxx configuration parameters.
*/
#include <sbi_utils/ipi/aclint_mswi.h>
#include <sbi_utils/irqchip/plic.h>
#include <sbi_utils/serial/uart8250.h>
#include <sbi_utils/timer/aclint_mtimer.h>
#define PLATFORM_PLIC_ADDR 0xc000000
#define PLATFORM_PLIC_SIZE (0x200000 + \
(PLATFORM_HART_COUNT * 0x1000))
#define PLATFORM_PLIC_NUM_SOURCES 128
#define PLATFORM_HART_COUNT 4
#define PLATFORM_CLINT_ADDR 0x2000000
#define PLATFORM_ACLINT_MTIMER_FREQ 10000000
#define PLATFORM_ACLINT_MSWI_ADDR (PLATFORM_CLINT_ADDR + \
CLINT_MSWI_OFFSET)
#define PLATFORM_ACLINT_MTIMER_ADDR (PLATFORM_CLINT_ADDR + \
CLINT_MTIMER_OFFSET)
#define PLATFORM_UART_ADDR 0x09000000
#define PLATFORM_UART_INPUT_FREQ 10000000
#define PLATFORM_UART_BAUDRATE 115200
static struct plic_data plic = {
.addr = PLATFORM_PLIC_ADDR,
.size = PLATFORM_PLIC_SIZE,
.num_src = PLATFORM_PLIC_NUM_SOURCES,
.context_map = {
[0] = { 0, 1 },
[1] = { 2, 3 },
[2] = { 4, 5 },
[3] = { 6, 7 },
},
};
static struct aclint_mswi_data mswi = {
.addr = PLATFORM_ACLINT_MSWI_ADDR,
.size = ACLINT_MSWI_SIZE,
.first_hartid = 0,
.hart_count = PLATFORM_HART_COUNT,
};
static struct aclint_mtimer_data mtimer = {
.mtime_freq = PLATFORM_ACLINT_MTIMER_FREQ,
.mtime_addr = PLATFORM_ACLINT_MTIMER_ADDR +
ACLINT_DEFAULT_MTIME_OFFSET,
.mtime_size = ACLINT_DEFAULT_MTIME_SIZE,
.mtimecmp_addr = PLATFORM_ACLINT_MTIMER_ADDR +
ACLINT_DEFAULT_MTIMECMP_OFFSET,
.mtimecmp_size = ACLINT_DEFAULT_MTIMECMP_SIZE,
.first_hartid = 0,
.hart_count = PLATFORM_HART_COUNT,
.has_64bit_mmio = true,
};
/*
* Platform early initialization.
*/
static int platform_early_init(bool cold_boot)
{
int rc;
if (!cold_boot)
return 0;
/* Example if the generic UART8250 driver is used */
rc = uart8250_init(PLATFORM_UART_ADDR, PLATFORM_UART_INPUT_FREQ,
PLATFORM_UART_BAUDRATE, 0, 1, 0, 0);
if (rc)
return rc;
return aclint_mswi_cold_init(&mswi);
}
/*
* Platform final initialization.
*/
static int platform_final_init(bool cold_boot)
{
return 0;
}
/*
* Initialize the platform interrupt controller during cold boot.
*/
static int platform_irqchip_init(void)
{
/* Example if the generic PLIC driver is used */
return plic_cold_irqchip_init(&plic);
}
/*
* Initialize platform timer during cold boot.
*/
static int platform_timer_init(void)
{
/* Example if the generic ACLINT driver is used */
return aclint_mtimer_cold_init(&mtimer, NULL);
}
/*
* Platform descriptor.
*/
const struct sbi_platform_operations platform_ops = {
.early_init = platform_early_init,
.final_init = platform_final_init,
.irqchip_init = platform_irqchip_init,
.timer_init = platform_timer_init
};
const struct sbi_platform platform = {
.opensbi_version = OPENSBI_VERSION,
.platform_version = SBI_PLATFORM_VERSION(0x0, 0x00),
.name = "platform-name",
.features = SBI_PLATFORM_DEFAULT_FEATURES,
.hart_count = 1,
.hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
.heap_size = SBI_PLATFORM_DEFAULT_HEAP_SIZE(1),
.platform_ops_addr = (unsigned long)&platform_ops
};