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review.evervolv.com / android_kernel_htc_msm8960 / 3ec20520ddfb654b1e60f51ff5e4769afde51b36 / . / include / asm-arm / arch-s3c2410 / debug-macro.S
blob: c37d3474179baf8a8c681e2778c144112560f21f [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/* linux/include/asm-arm/arch-s3c2410/debug-macro.S
2 *
3 * Debugging macro include header
4 *
5 * Copyright (C) 1994-1999 Russell King
6 * Copyright (C) 2005 Simtec Electronics
7 *
8 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]13*/
14
15#include <asm/arch/map.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]16#include <asm/arch/regs-gpio.h>
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]17#include <asm/plat-s3c/regs-serial.h>
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]18
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]19#define S3C2410_UART1_OFF (0x4000)
20#define SHIFT_2440TXF (14-9)
21
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]22 .macro addruart, rx
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]23 mrc p15, 0, \rx, c1, c0
24 tst \rx, #1
Lucas Correia Villa Real0367a8d2006-01-26 15:20:50 +0000[diff] [blame]25 ldreq \rx, = S3C24XX_PA_UART
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]26 ldrne \rx, = S3C24XX_VA_UART
Ben Dooks3ec20522007-07-22 16:12:04 +0100[diff] [blame^]27#if CONFIG_DEBUG_S3C_UART != 0
28 add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]29#endif
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]30 .endm
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]31
Ben Dookscbc4dbf2007-07-22 16:10:23 +0100[diff] [blame]32 .macro fifo_full_s3c24xx rd, rx
Ben Dooks68d9ab32006-06-24 21:21:27 +0100[diff] [blame]33 @ check for arm920 vs arm926. currently assume all arm926
34 @ devices have an 64 byte FIFO identical to the s3c2440
35 mrc p15, 0, \rd, c0, c0
36 and \rd, \rd, #0xff0
37 teq \rd, #0x260
38 beq 1004f
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]39 mrc p15, 0, \rd, c1, c0
40 tst \rd, #1
Lucas Correia Villa Real0367a8d2006-01-26 15:20:50 +0000[diff] [blame]41 addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]42 addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
43 bic \rd, \rd, #0xff000
44 ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
45 and \rd, \rd, #0x00ff0000
46 teq \rd, #0x00440000 @ is it 2440?
Ben Dooks68d9ab32006-06-24 21:21:27 +0100[diff] [blame]471004:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]48 ldr \rd, [ \rx, # S3C2410_UFSTAT ]
49 moveq \rd, \rd, lsr #SHIFT_2440TXF
50 tst \rd, #S3C2410_UFSTAT_TXFULL
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]51 .endm
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]52
Ben Dookscbc4dbf2007-07-22 16:10:23 +0100[diff] [blame]53 .macro fifo_full_s3c2410 rd, rx
54 ldr \rd, [ \rx, # S3C2410_UFSTAT ]
55 tst \rd, #S3C2410_UFSTAT_TXFULL
56 .endm
57
58/* fifo level reading */
59
60 .macro fifo_level_s3c24xx rd, rx
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]61 mrc p15, 0, \rd, c1, c0
62 tst \rd, #1
Lucas Correia Villa Real0367a8d2006-01-26 15:20:50 +0000[diff] [blame]63 addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]64 addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
65 bic \rd, \rd, #0xff000
66 ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
67 and \rd, \rd, #0x00ff0000
68 teq \rd, #0x00440000 @ is it 2440?
69
70 ldr \rd, [ \rx, # S3C2410_UFSTAT ]
71 andne \rd, \rd, #S3C2410_UFSTAT_TXMASK
72 andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]73 .endm
Ben Dookscbc4dbf2007-07-22 16:10:23 +0100[diff] [blame]74
75 .macro fifo_level_s3c2410 rd, rx
76 ldr \rd, [ \rx, # S3C2410_UFSTAT ]
77 and \rd, \rd, #S3C2410_UFSTAT_TXMASK
78 .endm
79
80/* Select the correct implementation depending on the configuration. The
81 * S3C2440 will get selected by default, as these are the most widely
82 * used variants of these
83*/
84
85#if defined(CONFIG_CPU_LLSERIAL_S3C2410_ONLY)
86#define fifo_full fifo_full_s3c2410
87#define fifo_level fifo_level_s3c2410
88#warning 2410only
89#elif !defined(CONFIG_CPU_LLSERIAL_S3C2440_ONLY)
90#define fifo_full fifo_full_s3c24xx
91#define fifo_level fifo_level_s3c24xx
92#warning generic
93#endif
94
95/* include the reset of the code which will do the work */
96
97#include <asm/plat-s3c/debug-macro.S>