131 lines
2.6 KiB
C
131 lines
2.6 KiB
C
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/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Dolu1990 <charles.papon.90@gmail.com>
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*
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*/
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#include <sbi/riscv_asm.h>
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#include <sbi/riscv_encoding.h>
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#include <sbi/riscv_io.h>
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#include <sbi/sbi_const.h>
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#include <sbi/sbi_hart.h>
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#include <sbi/sbi_platform.h>
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#include <sbi_utils/irqchip/plic.h>
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#include <sbi_utils/serial/uart8250.h>
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#include <sbi_utils/sys/clint.h>
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/* clang-format off */
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#define VEX_HART_COUNT 8
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#define VEX_PLATFORM_FEATURES (SBI_PLATFORM_HAS_TIMER_VALUE | SBI_PLATFORM_HAS_MFAULTS_DELEGATION)
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#define VEX_CLINT_ADDR 0xF0010000
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#define VEX_HART_STACK_SIZE 8192
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/* clang-format on */
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static struct clint_data clint = {VEX_CLINT_ADDR, 0, VEX_HART_COUNT, true};
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static int vex_final_init(bool cold_boot)
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{
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return 0;
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}
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static u32 vex_pmp_region_count(u32 hartid)
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{
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return 0;
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}
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static int vex_pmp_region_info(u32 hartid, u32 index, ulong *prot, ulong *addr,
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ulong *log2size)
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{
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int ret = 0;
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switch (index) {
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default:
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ret = -1;
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break;
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};
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return ret;
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}
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extern void vex_putc(char ch);
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extern int vex_getc(void);
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static int vex_console_init(void)
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{
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return 0;
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}
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static int vex_irqchip_init(bool cold_boot)
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{
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return 0;
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}
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static int vex_ipi_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = clint_cold_ipi_init(&clint);
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if (rc)
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return rc;
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}
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return clint_warm_ipi_init();
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}
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static int vex_timer_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = clint_cold_timer_init(&clint, NULL); /* Timer has no reference */
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if (rc)
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return rc;
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}
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return clint_warm_timer_init();
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}
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static int vex_system_reset(u32 type)
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{
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/* Tell the "finisher" that the simulation
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* was successful so that QEMU exits
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*/
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return 0;
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}
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const struct sbi_platform_operations platform_ops = {
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.pmp_region_count = vex_pmp_region_count,
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.pmp_region_info = vex_pmp_region_info,
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.final_init = vex_final_init,
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.console_putc = vex_putc,
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.console_getc = vex_getc,
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.console_init = vex_console_init,
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.irqchip_init = vex_irqchip_init,
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.ipi_send = clint_ipi_send,
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.ipi_clear = clint_ipi_clear,
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.ipi_init = vex_ipi_init,
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.timer_value = clint_timer_value,
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.timer_event_stop = clint_timer_event_stop,
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.timer_event_start = clint_timer_event_start,
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.timer_init = vex_timer_init,
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.system_reset = vex_system_reset
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};
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const struct sbi_platform platform = {
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.opensbi_version = OPENSBI_VERSION,
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.platform_version = SBI_PLATFORM_VERSION(0x0, 0x01),
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.name = "LiteX / VexRiscv-SMP",
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.features = VEX_PLATFORM_FEATURES,
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.hart_count = VEX_HART_COUNT,
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.hart_stack_size = VEX_HART_STACK_SIZE,
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.platform_ops_addr = (unsigned long)&platform_ops
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};
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