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Index: linux-2.6.21/arch/arm/boot/compressed/head.S
===================================================================
--- linux-2.6.21.orig/arch/arm/boot/compressed/head.S 2007-05-19 11:22:56.000000000 -0300
+++ linux-2.6.21/arch/arm/boot/compressed/head.S 2007-05-19 11:50:29.000000000 -0300
@@ -10,6 +10,7 @@
*/
#include <linux/linkage.h>
+#define DEBUG
/*
* Debugging stuff
*
@@ -117,6 +118,8 @@
mov r0, r0
.endr
+ inituart r10, r11
+
mov r1, #0x300 @ mach_id 0x363 is official EZX
orr r1, r1, #0x63 @ bootloader JUMP doesn't set r1
Index: linux-2.6.21/include/asm-arm/arch-pxa/uncompress.h
===================================================================
--- linux-2.6.21.orig/include/asm-arm/arch-pxa/uncompress.h 2007-05-19 11:22:56.000000000 -0300
+++ linux-2.6.21/include/asm-arm/arch-pxa/uncompress.h 2007-05-19 11:30:38.000000000 -0300
@@ -19,9 +19,9 @@
static inline void putc(char c)
{
-/* while (!(UART[5] & 0x40))
+ while (!(UART[5] & 0x40))
barrier();
- UART[0] = c;*/
+ UART[0] = c;
}
/*
Index: linux-2.6.21/include/asm-arm/arch-pxa/debug-macro.S
===================================================================
--- linux-2.6.21.orig/include/asm-arm/arch-pxa/debug-macro.S 2007-05-19 11:30:54.000000000 -0300
+++ linux-2.6.21/include/asm-arm/arch-pxa/debug-macro.S 2007-05-19 11:49:35.000000000 -0300
@@ -14,11 +14,52 @@
#include "hardware.h"
.macro addruart,rx
- mrc p15, 0, \rx, c1, c0
- tst \rx, #1 @ MMU enabled?
- moveq \rx, #0x40000000 @ physical
- movne \rx, #io_p2v(0x40000000) @ virtual
- orr \rx, \rx, #0x00100000
+@ mrc p15, 0, \rx, c1, c0
+@ tst \rx, #1 @ MMU enabled?
+ mov \rx, #0x40000000
+@ moveq \rx, #0x40000000 @ physical
+@ movne \rx, #io_p2v(0x40000000) @ virtual
+ orr \rx, \rx, #0x00700000
+ .endm
+
+ .macro inituart,rd,rx
+ ldr \rd, =0x41300004 @ CKEN
+ ldr \rx, [\rd]
+ orr \rx, \rx, #0x20
+ str \rx, [\rd]
+
+ ldr \rd, =0x40E0005C
+ ldr \rx, [\rd]
+ bic \rx, \rx, #0xF0000000 @ clear GPIO46/47 config
+ orr \rx, \rx, #0x60000000 @ set GPIO46: AF2, GPIO47: AF1
+ str \rx, [\rd]
+ ldr \rd, =0x40E00010
+ ldr \rx, [\rd]
+ bic \rx, \rx, #0x0000c000 @ clear GPIO46/47 direction
+ orr \rx, \rx, #0x00008000 @ set GPIO 47 out, 46 in
+ str \rx, [\rd]
+
+ addruart \rd
+ mov \rx, #0x83 @ DLAB = 1
+ strb \rx, [\rd, #0x0c]
+
+ mov \rx, #0x08 @ Divisor 8 => 115200 bps
+ strb \rx, [\rd, #0x00]
+
+ mov \rx, #0x00
+ strb \rx, [\rd, #0x04] @ Divisor high = 0
+
+ mov \rx, #0x03
+ strb \rx, [\rd, #0x0c] @ DLAB = 0, n81
+
+ mov \rx, #0x00
+ strb \rx, [\rd, #0x10] @ MCR = 0
+
+ mov \rx, #0x00
+ strb \rx, [\rd, #0x28] @ disable autobaud
+
+ mov \rx, #0x40
+ strb \rx, [\rd, #0x04] @ IER UUE (UART Enable)
.endm
#define UART_SHIFT 2
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