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linux/arch/arm/include/debug/at91.S

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[ARM] 3240/2: AT91RM9200 support for 2.6 (Core) Patch from SAN People Following changes were made to clock.c: 1) Replaced <asm/hardware/clock.h> with <linux/clk.h> 2) Removed old unused clk_enable & clk_disable. 3) Replaced clk_use/clk_unuse with clk_enable/clk_disable. Otherwise it's the same as the previous patch. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-09 17:05:41 +00:00
/*
* Copyright (C) 2003-2005 SAN People
*
* Debugging macro include header
*
* 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: at91: make DBGU soc independent we will select now the DBGU used by the soc at Kconfig level For the DEBUG_LL and early_printk this will allow to select which DBGU to use this will also allow to select them when multiple SOC are enabled Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2011-11-01 17:43:31 +00:00
#if defined(CONFIG_AT91_DEBUG_LL_DBGU0)
ARM: at91: move debug-macro.S into the common space Move debug-macro.S from include/mach/ to include/debug where all other common debug macros are. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-12 18:42:14 +00:00
#define AT91_DBGU 0xfffff200 /* AT91_BASE_DBGU0 */
ARM: at91: SAMA5D4 SoC detection code and low level routines SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-15 16:15:55 +00:00
#elif defined(CONFIG_AT91_DEBUG_LL_DBGU1)
ARM: at91: move debug-macro.S into the common space Move debug-macro.S from include/mach/ to include/debug where all other common debug macros are. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-12 18:42:14 +00:00
#define AT91_DBGU 0xffffee00 /* AT91_BASE_DBGU1 */
ARM: at91/soc: add basic support for new sama5d2 SoC Add Kconfig entries, header file changes and addition to the documentation. The early debug infrastructure is also added for easy development. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2015-07-30 17:12:12 +00:00
#elif defined(CONFIG_AT91_DEBUG_LL_DBGU2)
ARM: at91: SAMA5D4 SoC detection code and low level routines SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-15 16:15:55 +00:00
/* On sama5d4, use USART3 as low level serial console */
ARM: at91: move debug-macro.S into the common space Move debug-macro.S from include/mach/ to include/debug where all other common debug macros are. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-12 18:42:14 +00:00
#define AT91_DBGU 0xfc00c000 /* SAMA5D4_BASE_USART3 */
ARM: at91/soc: add basic support for new sama5d2 SoC Add Kconfig entries, header file changes and addition to the documentation. The early debug infrastructure is also added for easy development. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2015-07-30 17:12:12 +00:00
#else
/* On sama5d2, use UART1 as low level serial console */
#define AT91_DBGU 0xf8020000
ARM: at91: make DBGU soc independent we will select now the DBGU used by the soc at Kconfig level For the DEBUG_LL and early_printk this will allow to select which DBGU to use this will also allow to select them when multiple SOC are enabled Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2011-11-01 17:43:31 +00:00
#endif
ARM: at91: debug: fix non MMU debug Linux may be used without MMU on atmel SoCs, fix debug in this configuration. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-04 14:41:27 +00:00
#ifdef CONFIG_MMU
ARM: at91: move debug-macro.S into the common space Move debug-macro.S from include/mach/ to include/debug where all other common debug macros are. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-12 18:42:14 +00:00
#define AT91_IO_P2V(x) ((x) - 0x01000000)
ARM: at91: debug: fix non MMU debug Linux may be used without MMU on atmel SoCs, fix debug in this configuration. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-04 14:41:27 +00:00
#else
#define AT91_IO_P2V(x) (x)
#endif
ARM: at91: move debug-macro.S into the common space Move debug-macro.S from include/mach/ to include/debug where all other common debug macros are. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-12 18:42:14 +00:00
#define AT91_DBGU_SR (0x14) /* Status Register */
#define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */
#define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */
#define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */
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: at91: make DBGU soc independent we will select now the DBGU used by the soc at Kconfig level For the DEBUG_LL and early_printk this will allow to select which DBGU to use this will also allow to select them when multiple SOC are enabled Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2011-11-01 17:43:31 +00:00
ldr \rp, =AT91_DBGU @ System peripherals (phys address)
ldr \rv, =AT91_IO_P2V(AT91_DBGU) @ System peripherals (virt address)
[ARM] 3240/2: AT91RM9200 support for 2.6 (Core) Patch from SAN People Following changes were made to clock.c: 1) Replaced <asm/hardware/clock.h> with <linux/clk.h> 2) Removed old unused clk_enable & clk_disable. 3) Replaced clk_use/clk_unuse with clk_enable/clk_disable. Otherwise it's the same as the previous patch. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-09 17:05:41 +00:00
.endm
.macro senduart,rd,rx
at91: remove AT91_DBGU offset from dbgu register macro to make the soc base specified at runtime instead of compiled time Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2011-05-02 17:11:25 +00:00
strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register
[ARM] 3240/2: AT91RM9200 support for 2.6 (Core) Patch from SAN People Following changes were made to clock.c: 1) Replaced <asm/hardware/clock.h> with <linux/clk.h> 2) Removed old unused clk_enable & clk_disable. 3) Replaced clk_use/clk_unuse with clk_enable/clk_disable. Otherwise it's the same as the previous patch. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-09 17:05:41 +00:00
.endm
.macro waituart,rd,rx
at91: remove AT91_DBGU offset from dbgu register macro to make the soc base specified at runtime instead of compiled time Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2011-05-02 17:11:25 +00:00
1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
[ARM] 3240/2: AT91RM9200 support for 2.6 (Core) Patch from SAN People Following changes were made to clock.c: 1) Replaced <asm/hardware/clock.h> with <linux/clk.h> 2) Removed old unused clk_enable & clk_disable. 3) Replaced clk_use/clk_unuse with clk_enable/clk_disable. Otherwise it's the same as the previous patch. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-09 17:05:41 +00:00
beq 1001b
.endm
.macro busyuart,rd,rx
at91: remove AT91_DBGU offset from dbgu register macro to make the soc base specified at runtime instead of compiled time Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2011-05-02 17:11:25 +00:00
1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete
[ARM] 3240/2: AT91RM9200 support for 2.6 (Core) Patch from SAN People Following changes were made to clock.c: 1) Replaced <asm/hardware/clock.h> with <linux/clk.h> 2) Removed old unused clk_enable & clk_disable. 3) Replaced clk_use/clk_unuse with clk_enable/clk_disable. Otherwise it's the same as the previous patch. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-09 17:05:41 +00:00
beq 1001b
.endm
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