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| author | Jeremy Kerr <jeremy.kerr@canonical.com> | 2010-07-06 14:30:06 +0400 |
|---|---|---|
| committer | Nicolas Pitre <nico@fluxnic.net> | 2010-10-20 08:27:33 +0400 |
| commit | 0ea1293009826da45e1019f45dfde1e557bb30df (patch) | |
| tree | 7111bcd355921f03415182845e5f236ffe1896f4 /arch/arm/mach-at91 | |
| parent | 1ea64615601229f0dc16dee91dc5b50216411baa (diff) | |
| download | linux-0ea1293009826da45e1019f45dfde1e557bb30df.tar.xz | |
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>
Diffstat (limited to 'arch/arm/mach-at91')
| -rw-r--r-- | arch/arm/mach-at91/include/mach/debug-macro.S | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/arm/mach-at91/include/mach/debug-macro.S b/arch/arm/mach-at91/include/mach/debug-macro.S index 9e750a1c1b5a..0f959faf74a9 100644 --- a/arch/arm/mach-at91/include/mach/debug-macro.S +++ b/arch/arm/mach-at91/include/mach/debug-macro.S @@ -14,11 +14,9 @@ #include <mach/hardware.h> #include <mach/at91_dbgu.h> - .macro addruart, rx, tmp - mrc p15, 0, \rx, c1, c0 - tst \rx, #1 @ MMU enabled? - ldreq \rx, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address) - ldrne \rx, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address) + .macro addruart, rp, rv + ldr \rp, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address) + ldr \rv, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address) .endm .macro senduart,rd,rx |