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-rw-r--r--arch/arm/mach-omap2/include/mach/uncompress.h175
1 files changed, 173 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/include/mach/uncompress.h b/arch/arm/mach-omap2/include/mach/uncompress.h
index 78e0557bfd4e..28d1ec0e869a 100644
--- a/arch/arm/mach-omap2/include/mach/uncompress.h
+++ b/arch/arm/mach-omap2/include/mach/uncompress.h
@@ -1,5 +1,176 @@
1/* 1/*
2 * arch/arm/mach-omap2/include/mach/uncompress.h 2 * arch/arm/plat-omap/include/mach/uncompress.h
3 *
4 * Serial port stubs for kernel decompress status messages
5 *
6 * Initially based on:
7 * linux-2.4.15-rmk1-dsplinux1.6/arch/arm/plat-omap/include/mach1510/uncompress.h
8 * Copyright (C) 2000 RidgeRun, Inc.
9 * Author: Greg Lonnon <glonnon@ridgerun.com>
10 *
11 * Rewritten by:
12 * Author: <source@mvista.com>
13 * 2004 (c) MontaVista Software, Inc.
14 *
15 * This file is licensed under the terms of the GNU General Public License
16 * version 2. This program is licensed "as is" without any warranty of any
17 * kind, whether express or implied.
3 */ 18 */
4 19
5#include <plat/uncompress.h> 20#include <linux/types.h>
21#include <linux/serial_reg.h>
22
23#include <asm/memory.h>
24#include <asm/mach-types.h>
25
26#include <../mach-omap2/serial.h>
27
28#define MDR1_MODE_MASK 0x07
29
30volatile u8 *uart_base;
31int uart_shift;
32
33/*
34 * Store the DEBUG_LL uart number into memory.
35 * See also debug-macro.S, and serial.c for related code.
36 */
37static void set_omap_uart_info(unsigned char port)
38{
39 /*
40 * Get address of some.bss variable and round it down
41 * a la CONFIG_AUTO_ZRELADDR.
42 */
43 u32 ram_start = (u32)&uart_shift & 0xf8000000;
44 u32 *uart_info = (u32 *)(ram_start + OMAP_UART_INFO_OFS);
45 *uart_info = port;
46}
47
48static void putc(int c)
49{
50 if (!uart_base)
51 return;
52
53 /* Check for UART 16x mode */
54 if ((uart_base[UART_OMAP_MDR1 << uart_shift] & MDR1_MODE_MASK) != 0)
55 return;
56
57 while (!(uart_base[UART_LSR << uart_shift] & UART_LSR_THRE))
58 barrier();
59 uart_base[UART_TX << uart_shift] = c;
60}
61
62static inline void flush(void)
63{
64}
65
66/*
67 * Macros to configure UART1 and debug UART
68 */
69#define _DEBUG_LL_ENTRY(mach, dbg_uart, dbg_shft, dbg_id) \
70 if (machine_is_##mach()) { \
71 uart_base = (volatile u8 *)(dbg_uart); \
72 uart_shift = (dbg_shft); \
73 port = (dbg_id); \
74 set_omap_uart_info(port); \
75 break; \
76 }
77
78#define DEBUG_LL_OMAP2(p, mach) \
79 _DEBUG_LL_ENTRY(mach, OMAP2_UART##p##_BASE, OMAP_PORT_SHIFT, \
80 OMAP2UART##p)
81
82#define DEBUG_LL_OMAP3(p, mach) \
83 _DEBUG_LL_ENTRY(mach, OMAP3_UART##p##_BASE, OMAP_PORT_SHIFT, \
84 OMAP3UART##p)
85
86#define DEBUG_LL_OMAP4(p, mach) \
87 _DEBUG_LL_ENTRY(mach, OMAP4_UART##p##_BASE, OMAP_PORT_SHIFT, \
88 OMAP4UART##p)
89
90#define DEBUG_LL_OMAP5(p, mach) \
91 _DEBUG_LL_ENTRY(mach, OMAP5_UART##p##_BASE, OMAP_PORT_SHIFT, \
92 OMAP5UART##p)
93/* Zoom2/3 shift is different for UART1 and external port */
94#define DEBUG_LL_ZOOM(mach) \
95 _DEBUG_LL_ENTRY(mach, ZOOM_UART_BASE, ZOOM_PORT_SHIFT, ZOOM_UART)
96
97#define DEBUG_LL_TI81XX(p, mach) \
98 _DEBUG_LL_ENTRY(mach, TI81XX_UART##p##_BASE, OMAP_PORT_SHIFT, \
99 TI81XXUART##p)
100
101#define DEBUG_LL_AM33XX(p, mach) \
102 _DEBUG_LL_ENTRY(mach, AM33XX_UART##p##_BASE, OMAP_PORT_SHIFT, \
103 AM33XXUART##p)
104
105static inline void arch_decomp_setup(void)
106{
107 int port = 0;
108
109 /*
110 * Initialize the port based on the machine ID from the bootloader.
111 * Note that we're using macros here instead of switch statement
112 * as machine_is functions are optimized out for the boards that
113 * are not selected.
114 */
115 do {
116 /* omap2 based boards using UART1 */
117 DEBUG_LL_OMAP2(1, omap_2430sdp);
118 DEBUG_LL_OMAP2(1, omap_apollon);
119 DEBUG_LL_OMAP2(1, omap_h4);
120
121 /* omap2 based boards using UART3 */
122 DEBUG_LL_OMAP2(3, nokia_n800);
123 DEBUG_LL_OMAP2(3, nokia_n810);
124 DEBUG_LL_OMAP2(3, nokia_n810_wimax);
125
126 /* omap3 based boards using UART1 */
127 DEBUG_LL_OMAP2(1, omap3evm);
128 DEBUG_LL_OMAP3(1, omap_3430sdp);
129 DEBUG_LL_OMAP3(1, omap_3630sdp);
130 DEBUG_LL_OMAP3(1, omap3530_lv_som);
131 DEBUG_LL_OMAP3(1, omap3_torpedo);
132
133 /* omap3 based boards using UART3 */
134 DEBUG_LL_OMAP3(3, cm_t35);
135 DEBUG_LL_OMAP3(3, cm_t3517);
136 DEBUG_LL_OMAP3(3, cm_t3730);
137 DEBUG_LL_OMAP3(3, craneboard);
138 DEBUG_LL_OMAP3(3, devkit8000);
139 DEBUG_LL_OMAP3(3, igep0020);
140 DEBUG_LL_OMAP3(3, igep0030);
141 DEBUG_LL_OMAP3(3, nokia_rm680);
142 DEBUG_LL_OMAP3(3, nokia_rm696);
143 DEBUG_LL_OMAP3(3, nokia_rx51);
144 DEBUG_LL_OMAP3(3, omap3517evm);
145 DEBUG_LL_OMAP3(3, omap3_beagle);
146 DEBUG_LL_OMAP3(3, omap3_pandora);
147 DEBUG_LL_OMAP3(3, omap_ldp);
148 DEBUG_LL_OMAP3(3, overo);
149 DEBUG_LL_OMAP3(3, touchbook);
150
151 /* omap4 based boards using UART3 */
152 DEBUG_LL_OMAP4(3, omap_4430sdp);
153 DEBUG_LL_OMAP4(3, omap4_panda);
154
155 /* omap5 based boards using UART3 */
156 DEBUG_LL_OMAP5(3, omap5_sevm);
157
158 /* zoom2/3 external uart */
159 DEBUG_LL_ZOOM(omap_zoom2);
160 DEBUG_LL_ZOOM(omap_zoom3);
161
162 /* TI8168 base boards using UART3 */
163 DEBUG_LL_TI81XX(3, ti8168evm);
164
165 /* TI8148 base boards using UART1 */
166 DEBUG_LL_TI81XX(1, ti8148evm);
167
168 /* AM33XX base boards using UART1 */
169 DEBUG_LL_AM33XX(1, am335xevm);
170 } while (0);
171}
172
173/*
174 * nothing to do
175 */
176#define arch_decomp_wdog()
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