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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#include <sbi/riscv_asm.h>
#include <sbi/sbi_domain.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/serial/fdt_serial.h>
#include <sbi_utils/sys/htif.h>
static const struct fdt_match serial_htif_match[] = {
{ .compatible = "ucb,htif0" },
{ },
};
static int serial_htif_init(void *fdt, int nodeoff,
const struct fdt_match *match)
{
int rc;
bool custom = false;
uint64_t fromhost_addr = 0, tohost_addr = 0;
if (!fdt_get_node_addr_size(fdt, nodeoff, 0, &fromhost_addr, NULL)) {
custom = true;
tohost_addr = fromhost_addr + sizeof(uint64_t);
}
fdt_get_node_addr_size(fdt, nodeoff, 1, &tohost_addr, NULL);
rc = sbi_domain_root_add_memrange(fromhost_addr, PAGE_SIZE, PAGE_SIZE,
(SBI_DOMAIN_MEMREGION_MMIO |
SBI_DOMAIN_MEMREGION_SHARED_SURW_MRW));
if (rc)
return rc;
return htif_serial_init(custom, fromhost_addr, tohost_addr);
}
struct fdt_serial fdt_serial_htif = {
.match_table = serial_htif_match,
.init = serial_htif_init
};
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