diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/Kconfig.debug | 14 | ||||
| -rw-r--r-- | arch/arm/include/debug/8250.S | 24 | ||||
| -rw-r--r-- | arch/arm/include/debug/8250_32.S | 27 | ||||
| -rw-r--r-- | arch/arm/include/debug/picoxcell.S | 19 | ||||
| -rw-r--r-- | arch/arm/include/debug/socfpga.S | 21 |
5 files changed, 33 insertions, 72 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index f27f8eebded1..09e70090cfdc 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -451,6 +451,7 @@ choice config DEBUG_PICOXCELL_UART depends on ARCH_PICOXCELL bool "Use PicoXcell UART for low-level debug" + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on PicoXcell based platforms. @@ -593,6 +594,7 @@ choice config DEBUG_SOCFPGA_UART depends on ARCH_SOCFPGA bool "Use SOCFPGA UART for low-level debug" + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on SOCFPGA based platforms. @@ -851,9 +853,7 @@ config DEBUG_LL_INCLUDE default "debug/nomadik.S" if DEBUG_NOMADIK_UART default "debug/nspire.S" if DEBUG_NSPIRE_CX_UART default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART - default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 - default "debug/socfpga.S" if DEBUG_SOCFPGA_UART default "debug/sti.S" if DEBUG_STI_UART default "debug/tegra.S" if DEBUG_TEGRA_UART default "debug/u300.S" if DEBUG_U300_UART @@ -886,6 +886,7 @@ config DEBUG_UART_PHYS default 0x40100000 if DEBUG_PXA_UART1 default 0x42000000 if ARCH_GEMINI default 0x7c0003f8 if FOOTBRIDGE + default 0x80230000 if DEBUG_PICOXCELL_UART default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN @@ -897,6 +898,7 @@ config DEBUG_UART_PHYS default 0xf1012000 if ARCH_DOVE || ARCH_KIRKWOOD || ARCH_MV78XX0 || \ ARCH_ORION5X default 0xfe800000 if ARCH_IOP32X + default 0xffc02000 if DEBUG_SOCFPGA_UART default 0xffd82340 if ARCH_IOP13XX default 0xfffff700 if ARCH_IOP33X depends on DEBUG_UART_8250 @@ -915,6 +917,7 @@ config DEBUG_UART_VIRT default 0xfe012000 if ARCH_ORION5X default 0xfe017000 if DEBUG_MMP_UART2 default 0xfe018000 if DEBUG_MMP_UART3 + default 0xfe230000 if DEBUG_PICOXCELL_UART default 0xfe800000 if ARCH_IOP32X default 0xfeb24000 if DEBUG_RK3X_UART0 default 0xfeb26000 if DEBUG_RK3X_UART1 @@ -922,6 +925,7 @@ config DEBUG_UART_VIRT default 0xfed60000 if DEBUG_RK29_UART0 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 + default 0xfec02000 if DEBUG_SOCFPGA_UART default 0xfed12000 if ARCH_KIRKWOOD default 0xfee003f8 if FOOTBRIDGE default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART @@ -937,6 +941,12 @@ config DEBUG_UART_8250_SHIFT default 0 if FOOTBRIDGE || ARCH_IOP32X default 2 +config DEBUG_UART_8250_WORD + bool "Use 32-bit accesses for 8250 UART" + depends on DEBUG_UART_8250 + depends on DEBUG_UART_8250_SHIFT >= 2 + default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART + config DEBUG_UART_8250_FLOW_CONTROL bool "Enable flow control for 8250 UART" depends on DEBUG_UART_8250 diff --git a/arch/arm/include/debug/8250.S b/arch/arm/include/debug/8250.S index 92cab395677a..7a2baf913aa0 100644 --- a/arch/arm/include/debug/8250.S +++ b/arch/arm/include/debug/8250.S @@ -14,14 +14,32 @@ ldr \rv, =CONFIG_DEBUG_UART_VIRT .endm +#ifdef CONFIG_DEBUG_UART_8250_WORD + .macro store, rd, rx:vararg + str \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldr \rd, \rx + .endm +#else + .macro store, rd, rx:vararg + strb \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldrb \rd, \rx + .endm +#endif + #define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT .macro senduart,rd,rx - strb \rd, [\rx, #UART_TX << UART_SHIFT] + store \rd, [\rx, #UART_TX << UART_SHIFT] .endm .macro busyuart,rd,rx -1002: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT] +1002: load \rd, [\rx, #UART_LSR << UART_SHIFT] and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE teq \rd, #UART_LSR_TEMT | UART_LSR_THRE bne 1002b @@ -29,7 +47,7 @@ .macro waituart,rd,rx #ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL -1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] +1001: load \rd, [\rx, #UART_MSR << UART_SHIFT] tst \rd, #UART_MSR_CTS beq 1001b #endif diff --git a/arch/arm/include/debug/8250_32.S b/arch/arm/include/debug/8250_32.S deleted file mode 100644 index 8db01eeabbb4..000000000000 --- a/arch/arm/include/debug/8250_32.S +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Copyright (c) 2011 Picochip Ltd., Jamie Iles - * - * 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. - * - * Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit - * accesses to the 8250. - */ - -#include <linux/serial_reg.h> - - .macro senduart,rd,rx - str \rd, [\rx, #UART_TX << UART_SHIFT] - .endm - - .macro busyuart,rd,rx -1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT] - and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE - teq \rd, #UART_LSR_TEMT | UART_LSR_THRE - bne 1002b - .endm - - /* The UART's don't have any flow control IO's wired up. */ - .macro waituart,rd,rx - .endm diff --git a/arch/arm/include/debug/picoxcell.S b/arch/arm/include/debug/picoxcell.S deleted file mode 100644 index bc1f07c49cd4..000000000000 --- a/arch/arm/include/debug/picoxcell.S +++ /dev/null @@ -1,19 +0,0 @@ -/* - * Copyright (c) 2011 Picochip Ltd., Jamie Iles - * - * 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 UART_SHIFT 2 -#define PICOXCELL_UART1_BASE 0x80230000 -#define PHYS_TO_IO(x) (((x) & 0x00ffffff) | 0xfe000000) - - .macro addruart, rp, rv, tmp - ldr \rv, =PHYS_TO_IO(PICOXCELL_UART1_BASE) - ldr \rp, =PICOXCELL_UART1_BASE - .endm - -#include "8250_32.S" diff --git a/arch/arm/include/debug/socfpga.S b/arch/arm/include/debug/socfpga.S deleted file mode 100644 index 966b2f994946..000000000000 --- a/arch/arm/include/debug/socfpga.S +++ /dev/null @@ -1,21 +0,0 @@ -/* - * 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 UART_SHIFT 2 -#define DEBUG_LL_UART_OFFSET 0x00002000 - - .macro addruart, rp, rv, tmp - mov \rp, #DEBUG_LL_UART_OFFSET - orr \rp, \rp, #0x00c00000 - orr \rv, \rp, #0xfe000000 @ virtual base - orr \rp, \rp, #0xff000000 @ physical base - .endm - -#include "8250_32.S" - |