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lib: utils: Add fdt_parse_plic_node() function

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We add fdt_parse_plic_node() function which will allow us to parse
a particular DT node as PLIC node. This will be useful in parsing
the DT node which we have found by matching compatible string.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-04-29 14:21:52 +05:30
committed by Anup Patel
parent 44dd7be3b2
commit f0eb503db4
2 changed files with 23 additions and 6 deletions
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3
include/sbi_utils/fdt/fdt_helper.h
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@@ -52,6 +52,9 @@ int fdt_parse_uart8250_node(void *fdt, int nodeoffset,
int fdt_parse_uart8250(void *fdt, struct platform_uart_data *uart, int fdt_parse_uart8250(void *fdt, struct platform_uart_data *uart,
const char *compatible); const char *compatible);
int fdt_parse_plic_node(void *fdt, int nodeoffset,
struct platform_plic_data *plic);
int fdt_parse_plic(void *fdt, struct platform_plic_data *plic, int fdt_parse_plic(void *fdt, struct platform_plic_data *plic,
const char *compatible); const char *compatible);

26
lib/utils/fdt/fdt_helper.c
View File

@@ -259,16 +259,15 @@ int fdt_parse_uart8250(void *fdt, struct platform_uart_data *uart,
return fdt_parse_uart8250_node(fdt, nodeoffset, uart); return fdt_parse_uart8250_node(fdt, nodeoffset, uart);
} }
int fdt_parse_plic(void *fdt, struct platform_plic_data *plic, int fdt_parse_plic_node(void *fdt, int nodeoffset,
const char *compatible) struct platform_plic_data *plic)
{ {
int nodeoffset, len, rc; int len, rc;
const fdt32_t *val; const fdt32_t *val;
unsigned long reg_addr, reg_size; unsigned long reg_addr, reg_size;
nodeoffset = fdt_node_offset_by_compatible(fdt, -1, compatible); if (nodeoffset < 0 || !plic || !fdt)
if (nodeoffset < 0) return SBI_ENODEV;
return nodeoffset;
rc = fdt_get_node_addr_size(fdt, nodeoffset, &reg_addr, &reg_size); rc = fdt_get_node_addr_size(fdt, nodeoffset, &reg_addr, &reg_size);
if (rc < 0 || !reg_addr || !reg_size) if (rc < 0 || !reg_addr || !reg_size)
@@ -282,6 +281,21 @@ int fdt_parse_plic(void *fdt, struct platform_plic_data *plic,
return 0; return 0;
} }
int fdt_parse_plic(void *fdt, struct platform_plic_data *plic,
const char *compatible)
{
int nodeoffset;
if (!compatible || !plic || !fdt)
return SBI_ENODEV;
nodeoffset = fdt_node_offset_by_compatible(fdt, -1, compatible);
if (nodeoffset < 0)
return nodeoffset;
return fdt_parse_plic_node(fdt, nodeoffset, plic);
}
int fdt_parse_compat_addr(void *fdt, unsigned long *addr, int fdt_parse_compat_addr(void *fdt, unsigned long *addr,
const char *compatible) const char *compatible)
{ {