forked from Mirrors/opensbi
8d8cc9507b
These drivers were merged on an experimental basis without the RPMI specification being frozen. As a result, they may not be compatible with the frozen version of the RPMI protocol. Additionally, their devicetree bindings have not been reviewed and are subject to change. Warn the user that these drivers make no compatibility guarantees, and that their behavior and devicetree bindings may change incompatibly in future versions of OpenSBI. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2024 SiFive
|
|
*/
|
|
|
|
#include <libfdt.h>
|
|
#include <sbi/sbi_console.h>
|
|
#include <sbi/sbi_error.h>
|
|
#include <sbi_utils/fdt/fdt_driver.h>
|
|
#include <sbi_utils/fdt/fdt_helper.h>
|
|
|
|
int fdt_driver_init_by_offset(const void *fdt, int nodeoff,
|
|
const struct fdt_driver *const *drivers)
|
|
{
|
|
const struct fdt_driver *driver;
|
|
const struct fdt_match *match;
|
|
const void *prop;
|
|
int len, rc;
|
|
|
|
if (!fdt_node_is_enabled(fdt, nodeoff))
|
|
return SBI_ENODEV;
|
|
|
|
prop = fdt_getprop(fdt, nodeoff, "compatible", &len);
|
|
if (!prop)
|
|
return SBI_ENODEV;
|
|
|
|
while ((driver = *drivers++)) {
|
|
for (match = driver->match_table; match->compatible; match++) {
|
|
if (!fdt_stringlist_contains(prop, len, match->compatible))
|
|
continue;
|
|
|
|
if (driver->experimental)
|
|
sbi_printf("WARNING: %s driver is experimental and may change\n",
|
|
match->compatible);
|
|
|
|
rc = driver->init(fdt, nodeoff, match);
|
|
if (rc < 0) {
|
|
const char *name;
|
|
|
|
name = fdt_get_name(fdt, nodeoff, NULL);
|
|
sbi_printf("%s: %s (%s) init failed: %d\n",
|
|
__func__, name, match->compatible, rc);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
return SBI_ENODEV;
|
|
}
|
|
|
|
static int fdt_driver_init_scan(const void *fdt,
|
|
const struct fdt_driver *const *drivers,
|
|
bool one)
|
|
{
|
|
int nodeoff, rc;
|
|
|
|
for (nodeoff = fdt_next_node(fdt, -1, NULL);
|
|
nodeoff >= 0;
|
|
nodeoff = fdt_next_node(fdt, nodeoff, NULL)) {
|
|
rc = fdt_driver_init_by_offset(fdt, nodeoff, drivers);
|
|
if (rc == SBI_ENODEV)
|
|
continue;
|
|
if (rc < 0)
|
|
return rc;
|
|
if (one)
|
|
return 0;
|
|
}
|
|
|
|
return one ? SBI_ENODEV : 0;
|
|
}
|
|
|
|
int fdt_driver_init_all(const void *fdt,
|
|
const struct fdt_driver *const *drivers)
|
|
{
|
|
return fdt_driver_init_scan(fdt, drivers, false);
|
|
}
|
|
|
|
int fdt_driver_init_one(const void *fdt,
|
|
const struct fdt_driver *const *drivers)
|
|
{
|
|
return fdt_driver_init_scan(fdt, drivers, true);
|
|
}
|