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49c9e60eaa
imx6q gets 5 uart ports in total. Different board design may choose different port as debug uart. For example, imx6q-sabresd uses UART1, imx6q-sabrelite uses UART2 and imx6q-arm2 uses UART4. Rather than bloating DEBUG_LL choice list with all these uart ports, the patch introduces DEBUG_IMX6Q_UART_PORT for users to input uart port number when DEBUG_IMX6Q_UART is selected inside DEBUG_LL choice. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
75 lines
2.2 KiB
ArmAsm
75 lines
2.2 KiB
ArmAsm
/* arch/arm/mach-imx/include/mach/debug-macro.S
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*
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* Debugging macro include header
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*
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* Copyright (C) 1994-1999 Russell King
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* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#define IMX6Q_UART1_BASE_ADDR 0x02020000
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#define IMX6Q_UART2_BASE_ADDR 0x021e8000
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#define IMX6Q_UART3_BASE_ADDR 0x021ec000
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#define IMX6Q_UART4_BASE_ADDR 0x021f0000
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#define IMX6Q_UART5_BASE_ADDR 0x021f4000
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/*
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* IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
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* of IMX6Q_UART##n##_BASE_ADDR.
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*/
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#define IMX6Q_UART_BASE_ADDR(n) IMX6Q_UART##n##_BASE_ADDR
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#define IMX6Q_UART_BASE(n) IMX6Q_UART_BASE_ADDR(n)
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#define IMX6Q_DEBUG_UART_BASE IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
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#ifdef CONFIG_DEBUG_IMX1_UART
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#define UART_PADDR 0x00206000
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#elif defined (CONFIG_DEBUG_IMX25_UART)
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#define UART_PADDR 0x43f90000
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#elif defined (CONFIG_DEBUG_IMX21_IMX27_UART)
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#define UART_PADDR 0x1000a000
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#elif defined (CONFIG_DEBUG_IMX31_IMX35_UART)
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#define UART_PADDR 0x43f90000
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#elif defined (CONFIG_DEBUG_IMX51_UART)
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#define UART_PADDR 0x73fbc000
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#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART)
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#define UART_PADDR 0x53fbc000
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#elif defined (CONFIG_DEBUG_IMX6Q_UART)
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#define UART_PADDR IMX6Q_DEBUG_UART_BASE
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#endif
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/*
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* FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to
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* stay sync with that. It's hard to maintain, and should be fixed
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* globally for multi-platform build to use a fixed virtual address
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* for low-level debug uart port across platforms.
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*/
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#define IMX_IO_P2V(x) ( \
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(((x) & 0x80000000) >> 7) | \
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(0xf4000000 + \
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(((x) & 0x50000000) >> 6) + \
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(((x) & 0x0b000000) >> 4) + \
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(((x) & 0x000fffff))))
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#define UART_VADDR IMX_IO_P2V(UART_PADDR)
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.macro addruart, rp, rv, tmp
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ldr \rp, =UART_PADDR @ physical
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ldr \rv, =UART_VADDR @ virtual
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.endm
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.macro senduart,rd,rx
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str \rd, [\rx, #0x40] @ TXDATA
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.endm
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.macro waituart,rd,rx
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.endm
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.macro busyuart,rd,rx
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1002: ldr \rd, [\rx, #0x98] @ SR2
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tst \rd, #1 << 3 @ TXDC
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beq 1002b @ wait until transmit done
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.endm
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