diff options
Diffstat (limited to 'arch/arm/include/debug')
| -rw-r--r-- | arch/arm/include/debug/asm9260.S | 29 | ||||
| -rw-r--r-- | arch/arm/include/debug/renesas-scif.S | 52 | ||||
| -rw-r--r-- | arch/arm/include/debug/sa1100.S | 68 |
3 files changed, 149 insertions, 0 deletions
diff --git a/arch/arm/include/debug/asm9260.S b/arch/arm/include/debug/asm9260.S new file mode 100644 index 0000000..292f85b --- /dev/null +++ b/arch/arm/include/debug/asm9260.S @@ -0,0 +1,29 @@ +/* Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * Modified for ASM9260 by Oleksij Remepl <linux@rempel-privat.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + + .macro addruart, rp, rv, tmp + ldr \rp, = CONFIG_DEBUG_UART_PHYS + ldr \rv, = CONFIG_DEBUG_UART_VIRT + .endm + + .macro waituart,rd,rx + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0x50] @ TXDATA + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #0x60] @ STAT + tst \rd, #1 << 27 @ TXEMPTY + beq 1002b @ wait until transmit done + .endm diff --git a/arch/arm/include/debug/renesas-scif.S b/arch/arm/include/debug/renesas-scif.S new file mode 100644 index 0000000..97820a8 --- /dev/null +++ b/arch/arm/include/debug/renesas-scif.S @@ -0,0 +1,52 @@ +/* + * Renesas SCIF(A) debugging macro include header + * + * Based on r8a7790.S + * + * Copyright (C) 2012-2013 Renesas Electronics Corporation + * Copyright (C) 1994-1999 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define SCIF_PHYS CONFIG_DEBUG_UART_PHYS +#define SCIF_VIRT ((SCIF_PHYS & 0x00ffffff) | 0xfd000000) + +#if 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 waituart, 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 diff --git a/arch/arm/include/debug/sa1100.S b/arch/arm/include/debug/sa1100.S new file mode 100644 index 0000000..a0ae4f4 --- /dev/null +++ b/arch/arm/include/debug/sa1100.S @@ -0,0 +1,68 @@ +/* arch/arm/include/debug/sa1100.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * +*/ + +#define UTCR3 0x0c +#define UTDR 0x14 +#define UTSR1 0x20 +#define UTCR3_TXE 0x00000002 /* Transmit Enable */ +#define UTSR1_TBY 0x00000001 /* Transmitter BusY (read) */ +#define UTSR1_TNF 0x00000004 /* Transmit FIFO Not Full (read) */ + + .macro addruart, rp, rv, tmp + mrc p15, 0, \rp, c1, c0 + tst \rp, #1 @ MMU enabled? + moveq \rp, #0x80000000 @ physical base address + movne \rp, #0xf8000000 @ virtual address + + @ We probe for the active serial port here, coherently with + @ the comment in arch/arm/mach-sa1100/include/mach/uncompress.h. + @ We assume r1 can be clobbered. + + @ see if Ser3 is active + add \rp, \rp, #0x00050000 + ldr \rv, [\rp, #UTCR3] + tst \rv, #UTCR3_TXE + + @ if Ser3 is inactive, then try Ser1 + addeq \rp, \rp, #(0x00010000 - 0x00050000) + ldreq \rv, [\rp, #UTCR3] + tsteq \rv, #UTCR3_TXE + + @ if Ser1 is inactive, then try Ser2 + addeq \rp, \rp, #(0x00030000 - 0x00010000) + ldreq \rv, [\rp, #UTCR3] + tsteq \rv, #UTCR3_TXE + + @ clear top bits, and generate both phys and virt addresses + lsl \rp, \rp, #8 + lsr \rp, \rp, #8 + orr \rv, \rp, #0xf8000000 @ virtual + orr \rp, \rp, #0x80000000 @ physical + + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #UTDR] + .endm + + .macro waituart,rd,rx +1001: ldr \rd, [\rx, #UTSR1] + tst \rd, #UTSR1_TNF + beq 1001b + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #UTSR1] + tst \rd, #UTSR1_TBY + bne 1001b + .endm |