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usr
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src
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linux-headers-6.8.0-36-generic
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arch
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arm
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include
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debug
/ [
drwxr-xr-x
]
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renesas-scif.S
/* SPDX-License-Identifier: GPL-2.0 */ /* * Renesas SCIF(A) debugging macro include header * * Based on r8a7790.S * * Copyright (C) 2012-2013 Renesas Electronics Corporation * Copyright (C) 1994-1999 Russell King */ #define SCIF_PHYS CONFIG_DEBUG_UART_PHYS #define SCIF_VIRT ((SCIF_PHYS & 0x00ffffff) | 0xfd000000) #if defined(CONFIG_DEBUG_R7S9210_SCIF2) || defined(CONFIG_DEBUG_R7S9210_SCIF4) /* RZ/A2 SCIFA */ #define FTDR 0x06 #define FSR 0x08 #elif CONFIG_DEBUG_UART_PHYS < 0xe6e00000 /* SCIFA */ #define FTDR 0x20 #define FSR 0x14 #else /* SCIF */ #define FTDR 0x0c #define FSR 0x10 #endif #define TDFE (1 << 5) #define TEND (1 << 6) .macro addruart, rp, rv, tmp ldr \rp, =SCIF_PHYS ldr \rv, =SCIF_VIRT .endm .macro waituartcts,rd,rx .endm .macro waituarttxrdy, rd, rx 1001: ldrh \rd, [\rx, #FSR] tst \rd, #TDFE beq 1001b .endm .macro senduart, rd, rx strb \rd, [\rx, #FTDR] ldrh \rd, [\rx, #FSR] bic \rd, \rd, #TEND strh \rd, [\rx, #FSR] .endm .macro busyuart, rd, rx 1001: ldrh \rd, [\rx, #FSR] tst \rd, #TEND beq 1001b .endm
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