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linux/arch/arm/include/debug/ks8695.S

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[ARM] 4331/3: Support for Micrel/Kendin KS8695 processor Add core support for the Kendin/Micrel KS8695 processor family. It is an ARM922-T based SoC with integrated USART, 4-port Ethernet Switch, WAN Ethernet port, and optional PCI Host bridge, etc. http://www.micrel.com/page.do?page=product-info/sys_on_chip.jsp This patch is based on earlier patches from Lennert Buytenhek, Ben Dooks and Greg Ungerer posted to the arm-linux-kernel mailing list in March 2006; and Micrel's 2.6.9 port. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-11 20:01:28 +00:00
/*
ARM: 8270/1: ks8695: Migrate debug_ll macros to shared directory As part of the migration a couple of uart definitions have been copied from of the platform specific header files. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Arnd Bergmann <arnd.bergmann@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-01-09 17:33:36 +00:00
* arch/arm/include/debug/ks8695.S
[ARM] 4331/3: Support for Micrel/Kendin KS8695 processor Add core support for the Kendin/Micrel KS8695 processor family. It is an ARM922-T based SoC with integrated USART, 4-port Ethernet Switch, WAN Ethernet port, and optional PCI Host bridge, etc. http://www.micrel.com/page.do?page=product-info/sys_on_chip.jsp This patch is based on earlier patches from Lennert Buytenhek, Ben Dooks and Greg Ungerer posted to the arm-linux-kernel mailing list in March 2006; and Micrel's 2.6.9 port. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-11 20:01:28 +00:00
*
* Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
* Copyright (C) 2006 Simtec Electronics
*
* KS8695 - Debug macros
*
* 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.
*/
ARM: 8270/1: ks8695: Migrate debug_ll macros to shared directory As part of the migration a couple of uart definitions have been copied from of the platform specific header files. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Arnd Bergmann <arnd.bergmann@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-01-09 17:33:36 +00:00
#define KS8695_UART_PA 0x03ffe000
#define KS8695_UART_VA 0xf00fe000
#define KS8695_URTH (0x04)
#define KS8695_URLS (0x14)
#define URLS_URTE (1 << 6)
#define URLS_URTHRE (1 << 5)
[ARM] 4331/3: Support for Micrel/Kendin KS8695 processor Add core support for the Kendin/Micrel KS8695 processor family. It is an ARM922-T based SoC with integrated USART, 4-port Ethernet Switch, WAN Ethernet port, and optional PCI Host bridge, etc. http://www.micrel.com/page.do?page=product-info/sys_on_chip.jsp This patch is based on earlier patches from Lennert Buytenhek, Ben Dooks and Greg Ungerer posted to the arm-linux-kernel mailing list in March 2006; and Micrel's 2.6.9 port. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-11 20:01:28 +00:00
ARM: add an extra temp register to the low level debugging addruart macro Some platforms (like OMAP not to name it) are doing rather complicated hacks just to determine the base UART address to use. Let's give their addruart macro some slack by providing an extra work register which will allow for much needed cleanups. This is basically a no-op as this commit is only adding the extra argument to the macro but no one is using it yet. Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-09-01 02:55:46 +00:00
.macro addruart, rp, rv, tmp
arm: return both physical and virtual addresses from addruart Rather than checking the MMU status in every instance of addruart, do it once in kernel/debug.S, and change the existing addruart macros to return both physical and virtual addresses. The main debug code can then select the appropriate address to use. This will also allow us to retreive the address of a uart for the MMU state that we're not current in. Updated with fixes for OMAP from Jason Wang <jason77.wang@gmail.com> and Tony Lindgren <tony@atomide.com>, and fix for versatile express from Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Jason Wang <jason77.wang@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-07-06 10:30:06 +00:00
ldr \rp, =KS8695_UART_PA @ physical base address
ldr \rv, =KS8695_UART_VA @ virtual base address
[ARM] 4331/3: Support for Micrel/Kendin KS8695 processor Add core support for the Kendin/Micrel KS8695 processor family. It is an ARM922-T based SoC with integrated USART, 4-port Ethernet Switch, WAN Ethernet port, and optional PCI Host bridge, etc. http://www.micrel.com/page.do?page=product-info/sys_on_chip.jsp This patch is based on earlier patches from Lennert Buytenhek, Ben Dooks and Greg Ungerer posted to the arm-linux-kernel mailing list in March 2006; and Micrel's 2.6.9 port. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-11 20:01:28 +00:00
.endm
.macro senduart, rd, rx
str \rd, [\rx, #KS8695_URTH] @ Write to Transmit Holding Register
.endm
.macro busyuart, rd, rx
1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
tst \rd, #URLS_URTE @ Holding & Shift registers empty?
beq 1001b
.endm
.macro waituart, rd, rx
1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
tst \rd, #URLS_URTHRE @ Holding Register empty?
beq 1001b
.endm
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