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lib: utils: Add fdt_parse_hart_id() function

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Parsing HART id from a CPU DT node is a common requirement for
RISC-V systems. The newly added fdt_parse_hart_id() also helps
reduce duplicate code between fdt_cpu_fixup() function and
fdt_parse_hart_count() function.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Anup Patel
2020-04-26 12:39:13 +05:30
committed by Anup Patel
parent 66185b3ec9
commit 19e966b862
3 changed files with 37 additions and 15 deletions
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4
include/sbi_utils/fdt/fdt_helper.h
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@@ -10,6 +10,8 @@
#ifndef __FDT_HELPER_H__
#define __FDT_HELPER_H__
#include <sbi/sbi_types.h>
struct fdt_match {
const char *compatible;
void *data;
@@ -37,6 +39,8 @@ int fdt_find_match(void *fdt, const struct fdt_match *match_table,
int fdt_get_node_addr_size(void *fdt, int node, unsigned long *addr,
unsigned long *size);
int fdt_parse_hart_id(void *fdt, int cpu_offset, u32 *hartid);
int fdt_parse_sifive_uart_node(void *fdt, int nodeoffset,
struct platform_uart_data *uart);