129 lines
2.6 KiB
C
129 lines
2.6 KiB
C
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/*
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* Copyright (c) 2018 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <sbi/riscv_encoding.h>
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#include <sbi/sbi_const.h>
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#include <sbi/sbi_platform.h>
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#include <plat/irqchip/plic.h>
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#include <plat/sys/clint.h>
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#include "platform.h"
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#include "uarths.h"
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#define K210_U_SYS_CLK 1000000000
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#define K210_U_PERIPH_CLK (K210_U_SYS_CLK / 2)
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#define K210_U_PLIC_NUM_SOURCES 0x35
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#define K210_U_PLIC_NUM_PRIORITIES 7
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static int k210_console_init(void)
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{
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uarths_init(115200, UARTHS_STOP_1);
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return 0;
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}
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static void k210_console_putc(char c)
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{
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uarths_putc(c);
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}
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static char k210_console_getc(void)
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{
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return uarths_getc();
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}
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static u32 k210_pmp_region_count(u32 target_hart)
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{
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return 1;
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}
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static int k210_pmp_region_info(u32 target_hart, u32 index,
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ulong *prot, ulong *addr, ulong *log2size)
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{
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int ret = 0;
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switch (index) {
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case 0:
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*prot = PMP_R | PMP_W | PMP_X;
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*addr = 0;
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*log2size = __riscv_xlen;
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break;
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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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static int k210_cold_irqchip_init(void)
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{
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return plic_cold_irqchip_init(PLIC_BASE_ADDR,
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K210_U_PLIC_NUM_SOURCES,
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PLAT_HART_COUNT);
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}
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static int k210_cold_ipi_init(void)
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{
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return clint_cold_ipi_init(CLINT_BASE_ADDR,
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PLAT_HART_COUNT);
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}
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static int k210_cold_timer_init(void)
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{
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return clint_cold_timer_init(CLINT_BASE_ADDR,
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PLAT_HART_COUNT);
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}
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static int k210_cold_final_init(void)
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{
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return plic_fdt_fixup(sbi_scratch_thishart_arg1_ptr(), "riscv,plic0");
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}
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static int k210_system_down(u32 type)
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{
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/* For now nothing to do. */
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return 0;
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}
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struct sbi_platform platform = {
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.name = STRINGIFY(PLAT_NAME),
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.features = SBI_PLATFORM_HAS_MMIO_TIMER_VALUE,
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.hart_count = PLAT_HART_COUNT,
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.hart_stack_size = PLAT_HART_STACK_SIZE,
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.pmp_region_count = k210_pmp_region_count,
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.pmp_region_info = k210_pmp_region_info,
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.console_init = k210_console_init,
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.console_putc = k210_console_putc,
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.console_getc = k210_console_getc,
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.cold_irqchip_init = k210_cold_irqchip_init,
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.warm_irqchip_init = plic_warm_irqchip_init,
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.ipi_inject = clint_ipi_inject,
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.ipi_sync = clint_ipi_sync,
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.ipi_clear = clint_ipi_clear,
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.warm_ipi_init = clint_warm_ipi_init,
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.cold_ipi_init = k210_cold_ipi_init,
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.cold_final_init = k210_cold_final_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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.warm_timer_init = clint_warm_timer_init,
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.cold_timer_init = k210_cold_timer_init,
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.system_reboot = k210_system_down,
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.system_shutdown = k210_system_down
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};
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