aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-davinci/include/mach/debug-macro.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/debug-macro.S')
-rw-r--r--arch/arm/mach-davinci/include/mach/debug-macro.S46
1 files changed, 25 insertions, 21 deletions
diff --git a/arch/arm/mach-davinci/include/mach/debug-macro.S b/arch/arm/mach-davinci/include/mach/debug-macro.S
index f761dfdb868..9f1befc5ac3 100644
--- a/arch/arm/mach-davinci/include/mach/debug-macro.S
+++ b/arch/arm/mach-davinci/include/mach/debug-macro.S
@@ -29,35 +29,39 @@ davinci_uart_phys: .word 0
davinci_uart_virt: .word 0
.popsection
- .macro addruart, rx, tmp
+ .macro addruart, rp, rv
/* Use davinci_uart_phys/virt if already configured */
-10: mrc p15, 0, \rx, c1, c0
- tst \rx, #1 @ MMU enabled?
- ldreq \rx, =__virt_to_phys(davinci_uart_phys)
- ldrne \rx, =davinci_uart_virt
- ldr \rx, [\rx]
- cmp \rx, #0 @ is port configured?
+10: mrc p15, 0, \rp, c1, c0
+ tst \rp, #1 @ MMU enabled?
+ ldreq \rp, =__virt_to_phys(davinci_uart_phys)
+ ldrne \rp, =davinci_uart_phys
+ add \rv, \rp, #4 @ davinci_uart_virt
+ ldr \rp, [\rp, #0]
+ ldr \rv, [\rv, #0]
+ cmp \rp, #0 @ is port configured?
+ cmpne \rv, #0
bne 99f @ already configured
- mrc p15, 0, \rx, c1, c0
- tst \rx, #1 @ MMU enabled?
+ /* Check the debug UART address set in uncompress.h */
+ mrc p15, 0, \rp, c1, c0
+ tst \rp, #1 @ MMU enabled?
/* Copy uart phys address from decompressor uart info */
- ldreq \tmp, =__virt_to_phys(davinci_uart_phys)
- ldrne \tmp, =davinci_uart_phys
- ldreq \rx, =DAVINCI_UART_INFO
- ldrne \rx, =__phys_to_virt(DAVINCI_UART_INFO)
- ldr \rx, [\rx, #0]
- str \rx, [\tmp]
+ ldreq \rv, =__virt_to_phys(davinci_uart_phys)
+ ldrne \rv, =davinci_uart_phys
+ ldreq \rp, =DAVINCI_UART_INFO
+ ldrne \rp, =__phys_to_virt(DAVINCI_UART_INFO)
+ ldr \rp, [\rp, #0]
+ str \rp, [\rv]
/* Copy uart virt address from decompressor uart info */
- ldreq \tmp, =__virt_to_phys(davinci_uart_virt)
- ldrne \tmp, =davinci_uart_virt
- ldreq \rx, =DAVINCI_UART_INFO
- ldrne \rx, =__phys_to_virt(DAVINCI_UART_INFO)
- ldr \rx, [\rx, #4]
- str \rx, [\tmp]
+ ldreq \rv, =__virt_to_phys(davinci_uart_virt)
+ ldrne \rv, =davinci_uart_virt
+ ldreq \rp, =DAVINCI_UART_INFO
+ ldrne \rp, =__phys_to_virt(DAVINCI_UART_INFO)
+ ldr \rp, [\rp, #4]
+ str \rp, [\rv]
b 10b
99: