diff options
| author | Simon Arlott <simon@fire.lp0.eu> | 2012-05-26 01:04:43 -0600 |
|---|---|---|
| committer | Stephen Warren <swarren@wwwdotorg.org> | 2012-09-19 19:08:27 -0600 |
| commit | ec9653b8476bf526dde7bdefbc2be6b7aaa34db7 (patch) | |
| tree | 648b35803beb4ae30ad11ae1932645fc31fe0b0b /arch/arm/mach-bcm2835/include/mach/debug-macro.S | |
| parent | 55d512e245bc7699a8800e23df1a24195dd08217 (diff) | |
ARM: add infra-structure for BCM2835 and Raspberry Pi
The BCM2835 is an ARM SoC from Broadcom. This patch adds very basic
support for this SoC.
http://www.broadcom.com/products/BCM2835
http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf
Note that the documentation in the latter .pdf assumes the MMU setup
that's used on the "VideoCore" companion processor, and does not document
physical peripheral addresses. Subtract 0x5e000000 to obtain the physical
addresses. This is accounted for by the ranges property in the /soc node
in the device tree.
The BCM2835 SoC is used in the Raspberry Pi. This patch also adds a
minimal device tree for this board; enough to see some very early kernel
boot messages through earlyprintk. However, this patch does not yet
provide a useful booting system.
http://www.raspberrypi.org/.
This patch was extracted from git://github.com/lp0/linux.git branch
rpi-split from 3-4 months ago, and significantly stripped down and
modified since.
Signed-off-by: Chris Boot <bootc@bootc.net>
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Signed-off-by: Dom Cobley <dc4@broadcom.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-bcm2835/include/mach/debug-macro.S')
| -rw-r--r-- | arch/arm/mach-bcm2835/include/mach/debug-macro.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-bcm2835/include/mach/debug-macro.S b/arch/arm/mach-bcm2835/include/mach/debug-macro.S new file mode 100644 index 00000000000..8a161e44ae2 --- /dev/null +++ b/arch/arm/mach-bcm2835/include/mach/debug-macro.S @@ -0,0 +1,21 @@ +/* + * Debugging macro include header + * + * Copyright (C) 2010 Broadcom + * 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 <mach/bcm2835_soc.h> + + .macro addruart, rp, rv, tmp + ldr \rp, =BCM2835_DEBUG_PHYS + ldr \rv, =BCM2835_DEBUG_VIRT + .endm + +#include <asm/hardware/debug-pl01x.S> |