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-rw-r--r--arch/arm/mach-davinci/include/mach/debug-macro.S43
1 files changed, 19 insertions, 24 deletions
diff --git a/arch/arm/mach-davinci/include/mach/debug-macro.S b/arch/arm/mach-davinci/include/mach/debug-macro.S
index 45fff2c61f48..cf94552d5274 100644
--- a/arch/arm/mach-davinci/include/mach/debug-macro.S
+++ b/arch/arm/mach-davinci/include/mach/debug-macro.S
@@ -18,15 +18,10 @@
18 18
19#include <linux/serial_reg.h> 19#include <linux/serial_reg.h>
20 20
21#include <asm/memory.h>
22
23#include <mach/serial.h> 21#include <mach/serial.h>
24 22
25#define UART_SHIFT 2 23#define UART_SHIFT 2
26 24
27#define davinci_uart_v2p(x) ((x) - PAGE_OFFSET + PLAT_PHYS_OFFSET)
28#define davinci_uart_p2v(x) ((x) - PLAT_PHYS_OFFSET + PAGE_OFFSET)
29
30 .pushsection .data 25 .pushsection .data
31davinci_uart_phys: .word 0 26davinci_uart_phys: .word 0
32davinci_uart_virt: .word 0 27davinci_uart_virt: .word 0
@@ -35,38 +30,38 @@ davinci_uart_virt: .word 0
35 .macro addruart, rp, rv, tmp 30 .macro addruart, rp, rv, tmp
36 31
37 /* Use davinci_uart_phys/virt if already configured */ 32 /* Use davinci_uart_phys/virt if already configured */
3810: mrc p15, 0, \rp, c1, c0 3310: adr \rp, 99f @ get effective addr of 99f
39 tst \rp, #1 @ MMU enabled? 34 ldr \rv, [\rp] @ get absolute addr of 99f
40 ldreq \rp, =davinci_uart_v2p(davinci_uart_phys) 35 sub \rv, \rv, \rp @ offset between the two
41 ldrne \rp, =davinci_uart_phys 36 ldr \rp, [\rp, #4] @ abs addr of omap_uart_phys
42 add \rv, \rp, #4 @ davinci_uart_virt 37 sub \tmp, \rp, \rv @ make it effective
43 ldr \rp, [\rp, #0] 38 ldr \rp, [\tmp, #0] @ davinci_uart_phys
44 ldr \rv, [\rv, #0] 39 ldr \rv, [\tmp, #4] @ davinci_uart_virt
45 cmp \rp, #0 @ is port configured? 40 cmp \rp, #0 @ is port configured?
46 cmpne \rv, #0 41 cmpne \rv, #0
47 bne 99f @ already configured 42 bne 100f @ already configured
48 43
49 /* Check the debug UART address set in uncompress.h */ 44 /* Check the debug UART address set in uncompress.h */
50 mrc p15, 0, \rp, c1, c0
51 tst \rp, #1 @ MMU enabled?
52
53 and \rp, pc, #0xff000000 45 and \rp, pc, #0xff000000
54 ldr \rv, =DAVINCI_UART_INFO_OFS 46 ldr \rv, =DAVINCI_UART_INFO_OFS
55 add \rp, \rp, \rv 47 add \rp, \rp, \rv
56 48
57 ldreq \rv, =davinci_uart_v2p(davinci_uart_phys)
58 ldrne \rv, =davinci_uart_phys
59
60 /* Copy uart phys address from decompressor uart info */ 49 /* Copy uart phys address from decompressor uart info */
61 ldr \tmp, [\rp, #0] 50 ldr \rv, [\rp, #0]
62 str \tmp, [\rv, #0] 51 str \rv, [\tmp, #0]
63 52
64 /* Copy uart virt address from decompressor uart info */ 53 /* Copy uart virt address from decompressor uart info */
65 ldr \tmp, [\rp, #4] 54 ldr \rv, [\rp, #4]
66 str \tmp, [\rv, #4] 55 str \rv, [\tmp, #4]
67 56
68 b 10b 57 b 10b
6999: 58
59 .align
6099: .word .
61 .word davinci_uart_phys
62 .ltorg
63
64100:
70 .endm 65 .endm
71 66
72 .macro senduart,rd,rx 67 .macro senduart,rd,rx