From 6dde5ac5220b3b9c28f82f291b64eca3e5ebe80d Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Sun, 16 Sep 2012 20:50:45 +0800 Subject: ARM: imx: move debug macros to include/debug Move imx debug-macro.S over to common debug macro directory. It removes the inclusion to hardware.h by hard-coding the physical address of uart port and copying IMX_IO_P2V from hardware.h. Since we will need a common solution, which might use a fixed virtual address for uart port across platforms, we make a copy of IMX_IO_P2V here as a temporary solution to enable low-level debug for imx multi-platform build. Signed-off-by: Shawn Guo Acked-by: Sascha Hauer Acked-by: Arnd Bergmann diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index b0f3857..5566520 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -412,6 +412,14 @@ endchoice config DEBUG_LL_INCLUDE string default "debug/icedcc.S" if DEBUG_ICEDCC + default "debug/imx.S" if DEBUG_IMX1_UART || \ + DEBUG_IMX25_UART || \ + DEBUG_IMX21_IMX27_UART || \ + DEBUG_IMX31_IMX35_UART || \ + DEBUG_IMX51_UART || \ + DEBUG_IMX50_IMX53_UART ||\ + DEBUG_IMX6Q_UART2 || \ + DEBUG_IMX6Q_UART4 default "debug/highbank.S" if DEBUG_HIGHBANK_UART default "debug/mvebu.S" if DEBUG_MVEBU_UART default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S new file mode 100644 index 0000000..0b65d79 --- /dev/null +++ b/arch/arm/include/debug/imx.S @@ -0,0 +1,62 @@ +/* arch/arm/mach-imx/include/mach/debug-macro.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. + * + */ +#ifdef CONFIG_DEBUG_IMX1_UART +#define UART_PADDR 0x00206000 +#elif defined (CONFIG_DEBUG_IMX25_UART) +#define UART_PADDR 0x43f90000 +#elif defined (CONFIG_DEBUG_IMX21_IMX27_UART) +#define UART_PADDR 0x1000a000 +#elif defined (CONFIG_DEBUG_IMX31_IMX35_UART) +#define UART_PADDR 0x43f90000 +#elif defined (CONFIG_DEBUG_IMX51_UART) +#define UART_PADDR 0x73fbc000 +#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART) +#define UART_PADDR 0x53fbc000 +#elif defined (CONFIG_DEBUG_IMX6Q_UART2) +#define UART_PADDR 0x021e8000 +#elif defined (CONFIG_DEBUG_IMX6Q_UART4) +#define UART_PADDR 0x021f0000 +#endif + +/* + * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to + * stay sync with that. It's hard to maintain, and should be fixed + * globally for multi-platform build to use a fixed virtual address + * for low-level debug uart port across platforms. + */ +#define IMX_IO_P2V(x) ( \ + (((x) & 0x80000000) >> 7) | \ + (0xf4000000 + \ + (((x) & 0x50000000) >> 6) + \ + (((x) & 0x0b000000) >> 4) + \ + (((x) & 0x000fffff)))) + +#define UART_VADDR IMX_IO_P2V(UART_PADDR) + + .macro addruart, rp, rv, tmp + ldr \rp, =UART_PADDR @ physical + ldr \rv, =UART_VADDR @ virtual + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0x40] @ TXDATA + .endm + + .macro waituart,rd,rx + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #0x98] @ SR2 + tst \rd, #1 << 3 @ TXDC + beq 1002b @ wait until transmit done + .endm diff --git a/arch/arm/mach-imx/include/mach/debug-macro.S b/arch/arm/mach-imx/include/mach/debug-macro.S deleted file mode 100644 index 761e45f..0000000 --- a/arch/arm/mach-imx/include/mach/debug-macro.S +++ /dev/null @@ -1,51 +0,0 @@ -/* arch/arm/mach-imx/include/mach/debug-macro.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. - * - */ -#include - -#ifdef CONFIG_DEBUG_IMX1_UART -#define UART_PADDR MX1_UART1_BASE_ADDR -#elif defined (CONFIG_DEBUG_IMX25_UART) -#define UART_PADDR MX25_UART1_BASE_ADDR -#elif defined (CONFIG_DEBUG_IMX21_IMX27_UART) -#define UART_PADDR MX2x_UART1_BASE_ADDR -#elif defined (CONFIG_DEBUG_IMX31_IMX35_UART) -#define UART_PADDR MX3x_UART1_BASE_ADDR -#elif defined (CONFIG_DEBUG_IMX51_UART) -#define UART_PADDR MX51_UART1_BASE_ADDR -#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART) -#define UART_PADDR MX53_UART1_BASE_ADDR -#elif defined (CONFIG_DEBUG_IMX6Q_UART2) -#define UART_PADDR MX6Q_UART2_BASE_ADDR -#elif defined (CONFIG_DEBUG_IMX6Q_UART4) -#define UART_PADDR MX6Q_UART4_BASE_ADDR -#endif - -#define UART_VADDR IMX_IO_ADDRESS(UART_PADDR) - - .macro addruart, rp, rv, tmp - ldr \rp, =UART_PADDR @ physical - ldr \rv, =UART_VADDR @ virtual - .endm - - .macro senduart,rd,rx - str \rd, [\rx, #0x40] @ TXDATA - .endm - - .macro waituart,rd,rx - .endm - - .macro busyuart,rd,rx -1002: ldr \rd, [\rx, #0x98] @ SR2 - tst \rd, #1 << 3 @ TXDC - beq 1002b @ wait until transmit done - .endm -- cgit v0.10.2