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Commit d5bd4e8d authored by Oleksij Rempel's avatar Oleksij Rempel Committed by Arnd Bergmann
Browse files

ARM: add lolevel debug support for asm9260 



Since there is no public documentation, this patch also provide register
offsets for different UART units on this SoC.

Signed-off-by: default avatarOleksij Rempel <linux@rempel-privat.de>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent d9bfc86d

arch/arm/Kconfig.debug

+26 −2
Original line number Diff line number Diff line
@@ -93,6 +93,27 @@ choice 
	prompt "Kernel low-level debugging port"

	depends on DEBUG_LL



	config DEBUG_ASM9260_UART

		bool "Kernel low-level debugging via asm9260 UART"

		depends on MACH_ASM9260

		help

		  Say Y here if you want the debug print routines to direct

		  their output to an UART or USART port on asm9260 based

		  machines.



		    DEBUG_UART_PHYS | DEBUG_UART_VIRT



		    0x80000000      | 0xf0000000     | UART0

		    0x80004000      | 0xf0004000     | UART1

		    0x80008000      | 0xf0008000     | UART2

		    0x8000c000      | 0xf000c000     | UART3

		    0x80010000      | 0xf0010000     | UART4

		    0x80014000      | 0xf0014000     | UART5

		    0x80018000      | 0xf0018000     | UART6

		    0x8001c000      | 0xf001c000     | UART7

		    0x80020000      | 0xf0020000     | UART8

		    0x80024000      | 0xf0024000     | UART9



	config AT91_DEBUG_LL_DBGU0

		bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"

		depends on HAVE_AT91_DBGU0
@@ -1144,6 +1165,7 @@ config DEBUG_LL_INCLUDE 
	string

	default "debug/sa1100.S" if DEBUG_SA1100

	default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250

	default "debug/asm9260.S" if DEBUG_ASM9260_UART

	default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2

	default "debug/meson.S" if DEBUG_MESON_UARTAO

	default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
@@ -1248,6 +1270,7 @@ config DEBUG_UART_PHYS 
	default 0x78000000 if DEBUG_CNS3XXX

	default 0x7c0003f8 if FOOTBRIDGE

	default 0x78000000 if DEBUG_CNS3XXX

	default 0x80010000 if DEBUG_ASM9260_UART

	default 0x80070000 if DEBUG_IMX23_UART

	default 0x80074000 if DEBUG_IMX28_UART

	default 0x80230000 if DEBUG_PICOXCELL_UART
@@ -1297,13 +1320,14 @@ config DEBUG_UART_PHYS 
		DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \

		DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \

		DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \

		DEBUG_UART_BCM63XX

		DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART



config DEBUG_UART_VIRT

	hex "Virtual base address of debug UART"

	default 0xe0010fe0 if ARCH_RPC

	default 0xe1000000 if DEBUG_MSM_UART

	default 0xf0000be0 if ARCH_EBSA110

	default 0xf0010000 if DEBUG_ASM9260_UART

	default 0xf01fb000 if DEBUG_NOMADIK_UART

	default 0xf0201000 if DEBUG_BCM2835

	default 0xf1000300 if DEBUG_BCM_5301X
@@ -1374,7 +1398,7 @@ config DEBUG_UART_VIRT 
	depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \

		DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \

		DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \

		DEBUG_UART_BCM63XX

		DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART



config DEBUG_UART_8250_SHIFT

	int "Register offset shift for the 8250 debug UART"

arch/arm/include/debug/asm9260.S

0 → 100644
+29 −0
Original line number Diff line number Diff line 
/* 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