123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115 |
- // SPDX-License-Identifier: BSD-2-Clause
- /*
- * fdt_helper.h - Flat Device Tree parsing helper routines
- * Implement helper routines to parse FDT nodes on top of
- * libfdt for OpenSBI usage
- *
- * Copyright (C) 2020 Bin Meng <bmeng.cn@gmail.com>
- */
- #ifndef __FDT_HELPER_H__
- #define __FDT_HELPER_H__
- #include <sbi/sbi_types.h>
- #include <sbi/sbi_scratch.h>
- struct fdt_match {
- const char *compatible;
- const void *data;
- };
- #define FDT_MAX_PHANDLE_ARGS 16
- struct fdt_phandle_args {
- int node_offset;
- int args_count;
- u32 args[FDT_MAX_PHANDLE_ARGS];
- };
- struct platform_uart_data {
- unsigned long addr;
- unsigned long freq;
- unsigned long baud;
- unsigned long reg_shift;
- unsigned long reg_io_width;
- unsigned long reg_offset;
- };
- const struct fdt_match *fdt_match_node(void *fdt, int nodeoff,
- const struct fdt_match *match_table);
- int fdt_find_match(void *fdt, int startoff,
- const struct fdt_match *match_table,
- const struct fdt_match **out_match);
- int fdt_parse_phandle_with_args(void *fdt, int nodeoff,
- const char *prop, const char *cells_prop,
- int index, struct fdt_phandle_args *out_args);
- int fdt_get_node_addr_size(void *fdt, int node, int index,
- uint64_t *addr, uint64_t *size);
- bool fdt_node_is_enabled(void *fdt, int nodeoff);
- int fdt_parse_hart_id(void *fdt, int cpu_offset, u32 *hartid);
- int fdt_parse_max_enabled_hart_id(void *fdt, u32 *max_hartid);
- int fdt_parse_timebase_frequency(void *fdt, unsigned long *freq);
- int fdt_parse_gaisler_uart_node(void *fdt, int nodeoffset,
- struct platform_uart_data *uart);
- int fdt_parse_renesas_scif_node(void *fdt, int nodeoffset,
- struct platform_uart_data *uart);
- int fdt_parse_shakti_uart_node(void *fdt, int nodeoffset,
- struct platform_uart_data *uart);
- int fdt_parse_sifive_uart_node(void *fdt, int nodeoffset,
- struct platform_uart_data *uart);
- int fdt_parse_uart_node(void *fdt, int nodeoffset,
- struct platform_uart_data *uart);
- int fdt_parse_uart8250(void *fdt, struct platform_uart_data *uart,
- const char *compatible);
- int fdt_parse_xlnx_uartlite_node(void *fdt, int nodeoffset,
- struct platform_uart_data *uart);
- struct aplic_data;
- int fdt_parse_aplic_node(void *fdt, int nodeoff, struct aplic_data *aplic);
- struct imsic_data;
- bool fdt_check_imsic_mlevel(void *fdt);
- int fdt_parse_imsic_node(void *fdt, int nodeoff, struct imsic_data *imsic);
- struct plic_data;
- int fdt_parse_plic_node(void *fdt, int nodeoffset, struct plic_data *plic);
- int fdt_parse_plic(void *fdt, struct plic_data *plic, const char *compat);
- int fdt_parse_aclint_node(void *fdt, int nodeoffset, bool for_timer,
- unsigned long *out_addr1, unsigned long *out_size1,
- unsigned long *out_addr2, unsigned long *out_size2,
- u32 *out_first_hartid, u32 *out_hart_count);
- int fdt_parse_plmt_node(void *fdt, int nodeoffset, unsigned long *plmt_base,
- unsigned long *plmt_size, u32 *hart_count);
- int fdt_parse_plicsw_node(void *fdt, int nodeoffset, unsigned long *plicsw_base,
- unsigned long *size, u32 *hart_count);
- int fdt_parse_compat_addr(void *fdt, uint64_t *addr,
- const char *compatible);
- static inline void *fdt_get_address(void)
- {
- return sbi_scratch_thishart_arg1_ptr();
- }
- #endif /* __FDT_HELPER_H__ */
|