forked from Mirrors/opensbi
52af6e4b52
Add support for the UART provided by the LiteX SoC framework (https://github.com/enjoy-digital/litex), based on its FDT info (described in the Linux tree at Documentation/devicetree/bindings/serial/litex,liteuart.yaml). Signed-off-by: Gabriel Somlo <gsomlo@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
40 lines
846 B
C
40 lines
846 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021 Gabriel Somlo
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*
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* Authors:
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* Gabriel Somlo <gsomlo@gmail.com>
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*/
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#include <sbi/sbi_error.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/serial/fdt_serial.h>
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#include <sbi_utils/serial/litex-uart.h>
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static int serial_litex_init(void *fdt, int nodeoff,
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const struct fdt_match *match)
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{
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uint64_t reg_addr, reg_size;
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int rc;
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if (nodeoff < 0 || !fdt)
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return SBI_ENODEV;
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rc = fdt_get_node_addr_size(fdt, nodeoff, 0, ®_addr, ®_size);
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if (rc < 0 || !reg_addr || !reg_size)
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return SBI_ENODEV;
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return litex_uart_init(reg_addr);
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}
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static const struct fdt_match serial_litex_match[] = {
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{ .compatible = "litex,liteuart" },
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{ },
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};
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struct fdt_serial fdt_serial_litex = {
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.match_table = serial_litex_match,
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.init = serial_litex_init
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};
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