add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/mips/kernel/cps-vec-ns16550.S
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@@ -1,11 +1,7 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * Copyright (C) 2015 Imagination Technologies
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  * Author: Paul Burton <paul.burton@mips.com>
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License as published by the
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- * Free Software Foundation;  either version 2 of the  License, or (at your
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- * option) any later version.
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  */
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 #include <asm/addrspace.h>
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@@ -18,16 +14,30 @@
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 #define UART_TX_OFS	(UART_TX << CONFIG_MIPS_CPS_NS16550_SHIFT)
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 #define UART_LSR_OFS	(UART_LSR << CONFIG_MIPS_CPS_NS16550_SHIFT)
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+#if CONFIG_MIPS_CPS_NS16550_WIDTH == 1
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+# define UART_L		lb
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+# define UART_S		sb
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+#elif CONFIG_MIPS_CPS_NS16550_WIDTH == 2
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+# define UART_L		lh
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+# define UART_S		sh
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+#elif CONFIG_MIPS_CPS_NS16550_WIDTH == 4
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+# define UART_L		lw
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+# define UART_S		sw
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+#else
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+# define UART_L		lb
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+# define UART_S		sb
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+#endif
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+
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 /**
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  * _mips_cps_putc() - write a character to the UART
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  * @a0: ASCII character to write
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  * @t9: UART base address
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  */
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 LEAF(_mips_cps_putc)
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-1:	lw		t0, UART_LSR_OFS(t9)
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+1:	UART_L		t0, UART_LSR_OFS(t9)
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 	andi		t0, t0, UART_LSR_TEMT
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 	beqz		t0, 1b
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-	sb		a0, UART_TX_OFS(t9)
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+	UART_S		a0, UART_TX_OFS(t9)
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 	jr		ra
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 	END(_mips_cps_putc)
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