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Diffstat (limited to 'platform/kendryte/k210/platform.c')
-rw-r--r-- | platform/kendryte/k210/platform.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/platform/kendryte/k210/platform.c b/platform/kendryte/k210/platform.c new file mode 100644 index 0000000..6f9297e --- /dev/null +++ b/platform/kendryte/k210/platform.c @@ -0,0 +1,128 @@ +/* + * Copyright (c) 2018 Western Digital Corporation or its affiliates. + * + * Authors: + * Anup Patel <anup.patel@wdc.com> + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include <sbi/riscv_encoding.h> +#include <sbi/sbi_const.h> +#include <sbi/sbi_platform.h> +#include <plat/irqchip/plic.h> +#include <plat/sys/clint.h> +#include "platform.h" +#include "uarths.h" + +#define K210_U_SYS_CLK 1000000000 +#define K210_U_PERIPH_CLK (K210_U_SYS_CLK / 2) + +#define K210_U_PLIC_NUM_SOURCES 0x35 +#define K210_U_PLIC_NUM_PRIORITIES 7 + +static int k210_console_init(void) +{ + uarths_init(115200, UARTHS_STOP_1); + + return 0; +} + +static void k210_console_putc(char c) +{ + uarths_putc(c); +} + +static char k210_console_getc(void) +{ + return uarths_getc(); +} + +static u32 k210_pmp_region_count(u32 target_hart) +{ + return 1; +} + +static int k210_pmp_region_info(u32 target_hart, u32 index, + ulong *prot, ulong *addr, ulong *log2size) +{ + int ret = 0; + + switch (index) { + case 0: + *prot = PMP_R | PMP_W | PMP_X; + *addr = 0; + *log2size = __riscv_xlen; + break; + default: + ret = -1; + break; + }; + + return ret; +} + +static int k210_cold_irqchip_init(void) +{ + return plic_cold_irqchip_init(PLIC_BASE_ADDR, + K210_U_PLIC_NUM_SOURCES, + PLAT_HART_COUNT); +} + +static int k210_cold_ipi_init(void) +{ + return clint_cold_ipi_init(CLINT_BASE_ADDR, + PLAT_HART_COUNT); +} + +static int k210_cold_timer_init(void) +{ + return clint_cold_timer_init(CLINT_BASE_ADDR, + PLAT_HART_COUNT); +} + +static int k210_cold_final_init(void) +{ + return plic_fdt_fixup(sbi_scratch_thishart_arg1_ptr(), "riscv,plic0"); +} + +static int k210_system_down(u32 type) +{ + /* For now nothing to do. */ + return 0; +} + +struct sbi_platform platform = { + + .name = STRINGIFY(PLAT_NAME), + .features = SBI_PLATFORM_HAS_MMIO_TIMER_VALUE, + + .hart_count = PLAT_HART_COUNT, + .hart_stack_size = PLAT_HART_STACK_SIZE, + + .pmp_region_count = k210_pmp_region_count, + .pmp_region_info = k210_pmp_region_info, + + + .console_init = k210_console_init, + .console_putc = k210_console_putc, + .console_getc = k210_console_getc, + + .cold_irqchip_init = k210_cold_irqchip_init, + .warm_irqchip_init = plic_warm_irqchip_init, + .ipi_inject = clint_ipi_inject, + .ipi_sync = clint_ipi_sync, + .ipi_clear = clint_ipi_clear, + .warm_ipi_init = clint_warm_ipi_init, + .cold_ipi_init = k210_cold_ipi_init, + .cold_final_init = k210_cold_final_init, + + .timer_value = clint_timer_value, + .timer_event_stop = clint_timer_event_stop, + .timer_event_start = clint_timer_event_start, + .warm_timer_init = clint_warm_timer_init, + .cold_timer_init = k210_cold_timer_init, + + .system_reboot = k210_system_down, + .system_shutdown = k210_system_down +}; |