forked from Mirrors/opensbi
df1c100001
This allows the compiler to generate significantly better code, because it does not have to maintain either the loop counter or loop limit. Plus there are half as many symbols to relocate. This also simplifies passing carray arrays to helper functions. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* Anup Patel <anup.patel@wdc.com>
|
|
*/
|
|
|
|
#include <sbi/sbi_error.h>
|
|
#include <sbi/sbi_scratch.h>
|
|
#include <sbi_utils/fdt/fdt_helper.h>
|
|
#include <sbi_utils/ipi/fdt_ipi.h>
|
|
|
|
/* List of FDT ipi drivers generated at compile time */
|
|
extern struct fdt_ipi *const fdt_ipi_drivers[];
|
|
|
|
int fdt_ipi_init(void)
|
|
{
|
|
int pos, noff, rc;
|
|
struct fdt_ipi *drv;
|
|
const struct fdt_match *match;
|
|
const void *fdt = fdt_get_address();
|
|
|
|
for (pos = 0; fdt_ipi_drivers[pos]; pos++) {
|
|
drv = fdt_ipi_drivers[pos];
|
|
|
|
noff = -1;
|
|
while ((noff = fdt_find_match(fdt, noff,
|
|
drv->match_table, &match)) >= 0) {
|
|
if (!fdt_node_is_enabled(fdt, noff))
|
|
continue;
|
|
|
|
/* drv->cold_init must not be NULL */
|
|
if (drv->cold_init == NULL)
|
|
return SBI_EFAIL;
|
|
|
|
rc = drv->cold_init(fdt, noff, match);
|
|
if (rc == SBI_ENODEV)
|
|
continue;
|
|
if (rc)
|
|
return rc;
|
|
|
|
/*
|
|
* We will have multiple IPI devices on multi-die or
|
|
* multi-socket systems so we cannot break here.
|
|
*/
|
|
}
|
|
}
|
|
|
|
/*
|
|
* On some single-hart system there is no need for ipi,
|
|
* so we cannot return a failure here
|
|
*/
|
|
return 0;
|
|
}
|