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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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24 lines
414 B
C
24 lines
414 B
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/io.h>
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#include <asm/sn/ioc3.h>
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static inline struct ioc3_uartregs *console_uart(void)
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{
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struct ioc3 *ioc3;
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ioc3 = (struct ioc3 *)((void *)(0x900000001f600000));
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return &ioc3->sregs.uarta;
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}
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void prom_putchar(char c)
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{
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struct ioc3_uartregs *uart = console_uart();
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while ((readb(&uart->iu_lsr) & 0x20) == 0)
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cpu_relax();
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writeb(c, &uart->iu_thr);
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}
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