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authorJeremy Kerr <jeremy.kerr@canonical.com>2010-07-06 06:30:06 -0400
committerNicolas Pitre <nico@fluxnic.net>2010-10-20 00:27:33 -0400
commit0ea1293009826da45e1019f45dfde1e557bb30df (patch)
tree7111bcd355921f03415182845e5f236ffe1896f4 /arch/arm/mach-ixp2000
parent1ea64615601229f0dc16dee91dc5b50216411baa (diff)
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-ixp2000')
-rw-r--r--arch/arm/mach-ixp2000/include/mach/debug-macro.S14
1 files changed, 6 insertions, 8 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/debug-macro.S b/arch/arm/mach-ixp2000/include/mach/debug-macro.S
index 6a827681680f..0ef533b20972 100644
--- a/arch/arm/mach-ixp2000/include/mach/debug-macro.S
+++ b/arch/arm/mach-ixp2000/include/mach/debug-macro.S
@@ -11,16 +11,14 @@
11 * 11 *
12*/ 12*/
13 13
14 .macro addruart, rx, tmp 14 .macro addruart, rp, rv
15 mrc p15, 0, \rx, c1, c0 15 mov \rp, #0x00030000
16 tst \rx, #1 @ MMU enabled?
17 moveq \rx, #0xc0000000 @ Physical base
18 movne \rx, #0xfe000000 @ virtual base
19 orrne \rx, \rx, #0x00f00000
20 orr \rx, \rx, #0x00030000
21#ifdef __ARMEB__ 16#ifdef __ARMEB__
22 orr \rx, \rx, #0x00000003 17 orr \rp, \rp, #0x00000003
23#endif 18#endif
19 orr \rv, \rp, #0xfe000000 @ virtual base
20 orr \rv, \rv, #0x00f00000
21 orr \rp, \rp, #0xc0000000 @ Physical base
24 .endm 22 .endm
25 23
26#define UART_SHIFT 2 24#define UART_SHIFT 2