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- /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2019 Western Digital Corporation or its affiliates.
- */
- #include <sbi/riscv_encoding.h>
- #include <sbi/sbi_const.h>
- #include <sbi/sbi_platform.h>
- /*
- * Include these files as needed.
- * See config.mk PLATFORM_xxx configuration parameters.
- */
- #include <plat/irqchip/plic.h>
- #include <plat/serial/uart8250.h>
- #include <plat/sys/clint.h>
- /*
- * Platform early initialization.
- */
- static int platform_early_init(bool cold_boot)
- {
- return 0;
- }
- /*
- * Platform final initialization.
- */
- static int platform_final_init(bool cold_boot)
- {
- return 0;
- }
- /*
- * Get number of PMP regions for given HART.
- */
- static u32 platform_pmp_region_count(u32 hartid)
- {
- return 0;
- }
- /*
- * Get PMP regions details (namely: protection, base address, and size) for
- * a given HART.
- */
- static int platform_pmp_region_info(u32 hartid, u32 index, ulong *prot,
- ulong *addr, ulong *log2size)
- {
- return 0;
- }
- /*
- * Initialize the platform console.
- */
- static int platform_console_init(void)
- {
- /* Example if the generic UART8250 driver is used */
- return uart8250_init(PLATFORM_UART_ADDR, PLATFORM_UART_SHIFTREG_ADDR,
- PLATFORM_UART_BAUDRATE, 0, 1);
- }
- /*
- * Write a character to the platform console output.
- */
- static void platform_console_putc(char ch)
- {
- /* Example if the generic UART8250 driver is used */
- uart8250_putc(ch);
- }
- /*
- * Read a character from the platform console input.
- */
- static int platform_console_getc(void)
- {
- return uart8250_getc();
- }
- /*
- * Initialize the platform interrupt controller for current HART.
- */
- static int platform_irqchip_init(bool cold_boot)
- {
- u32 hartid = sbi_current_hartid();
- int ret;
- /* Example if the generic PLIC driver is used */
- if (cold_boot) {
- ret = plic_cold_irqchip_init(PLATFORM_PLIC_ADDR,
- PLATFORM_PLIC_NUM_SOURCES,
- PLATFORM_HART_COUNT);
- if (ret)
- return ret;
- }
- return plic_warm_irqchip_init(hartid, 2 * hartid, 2 * hartid + 1);
- }
- /*
- * Initialize IPI for current HART.
- */
- static int platform_ipi_init(bool cold_boot)
- {
- int ret;
- /* Example if the generic CLINT driver is used */
- if (cold_boot) {
- ret = clint_cold_ipi_init(PLATFORM_CLINT_ADDR,
- PLATFORM_HART_COUNT);
- if (ret)
- return ret;
- }
- return clint_warm_ipi_init();
- }
- /*
- * Send IPI to a target HART
- */
- static void platform_ipi_send(u32 target_hart)
- {
- /* Example if the generic CLINT driver is used */
- clint_ipi_send(target_hart);
- }
- /*
- * Wait for target HART to acknowledge IPI.
- */
- static void platform_ipi_sync(u32 target_hart)
- {
- /* Example if the generic CLINT driver is used */
- clint_ipi_sync(target_hart);
- }
- /*
- * Clear IPI for a target HART.
- */
- static void platform_ipi_clear(u32 target_hart)
- {
- /* Example if the generic CLINT driver is used */
- clint_ipi_clear(target_hart);
- }
- /*
- * Initialize platform timer for current HART.
- */
- static int platform_timer_init(bool cold_boot)
- {
- int ret;
- /* Example if the generic CLINT driver is used */
- if (cold_boot) {
- ret = clint_cold_timer_init(PLATFORM_CLINT_ADDR,
- PLATFORM_HART_COUNT);
- if (ret)
- return ret;
- }
- return clint_warm_timer_init();
- }
- /*
- * Get platform timer value.
- */
- static u64 platform_timer_value(void)
- {
- /* Example if the generic CLINT driver is used */
- return clint_timer_value();
- }
- /*
- * Start platform timer event for current HART.
- */
- static void platform_timer_event_start(u64 next_event)
- {
- /* Example if the generic CLINT driver is used */
- clint_timer_event_start(next_event);
- }
- /*
- * Stop platform timer event for current HART.
- */
- static void platform_timer_event_stop(void)
- {
- /* Example if the generic CLINT driver is used */
- clint_timer_event_stop();
- }
- /*
- * Reboot the platform.
- */
- static int platform_system_reboot(u32 type)
- {
- return 0;
- }
- /*
- * Shutdown or poweroff the platform.
- */
- static int platform_system_shutdown(u32 type)
- {
- return 0;
- }
- /*
- * Platform descriptor.
- */
- const struct sbi_platform platform = {
- .name = "platform-name",
- .features = SBI_PLATFORM_DEFAULT_FEATURES,
- .hart_count = 1,
- .hart_stack_size = 4096,
- .disabled_hart_mask = 0,
- .early_init = platform_early_init,
- .final_init = platform_final_init,
- .pmp_region_count = platform_pmp_region_count,
- .pmp_region_info = platform_pmp_region_info,
- .console_init = platform_console_init,
- .console_putc = platform_console_putc,
- .console_getc = platform_console_getc,
- .irqchip_init = platform_irqchip_init,
- .ipi_init = platform_ipi_init,
- .ipi_send = platform_ipi_send,
- .ipi_sync = platform_ipi_sync,
- .ipi_clear = platform_ipi_clear,
- .timer_init = platform_timer_init,
- .timer_value = platform_timer_value,
- .timer_event_start = platform_timer_event_start,
- .timer_event_stop = platform_timer_event_stop,
- .system_reboot = platform_system_reboot,
- .system_shutdown = platform_system_shutdown
- };
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