1 /*
2  *  arch/arm/plat-mxc/include/mach/uncompress.h
3  *
4  *  Copyright (C) 1999 ARM Limited
5  *  Copyright (C) Shane Nay (shane@minirl.com)
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  */
17 #ifndef __ASM_ARCH_MXC_UNCOMPRESS_H__
18 #define __ASM_ARCH_MXC_UNCOMPRESS_H__
19 
20 #define __MXC_BOOT_UNCOMPRESS
21 
22 #include <asm/mach-types.h>
23 
24 static unsigned long uart_base;
25 
26 #define UART(x) (*(volatile unsigned long *)(uart_base + (x)))
27 
28 #define USR2 0x98
29 #define USR2_TXFE (1<<14)
30 #define TXR  0x40
31 #define UCR1 0x80
32 #define UCR1_UARTEN 1
33 
34 /*
35  * The following code assumes the serial port has already been
36  * initialized by the bootloader.  We search for the first enabled
37  * port in the most probable order.  If you didn't setup a port in
38  * your bootloader then nothing will appear (which might be desired).
39  *
40  * This does not append a newline
41  */
42 
putc(int ch)43 static void putc(int ch)
44 {
45 	if (!uart_base)
46 		return;
47 	if (!(UART(UCR1) & UCR1_UARTEN))
48 		return;
49 
50 	while (!(UART(USR2) & USR2_TXFE))
51 		barrier();
52 
53 	UART(TXR) = ch;
54 }
55 
flush(void)56 static inline void flush(void)
57 {
58 }
59 
60 #define MX1_UART1_BASE_ADDR	0x00206000
61 #define MX25_UART1_BASE_ADDR	0x43f90000
62 #define MX2X_UART1_BASE_ADDR	0x1000a000
63 #define MX3X_UART1_BASE_ADDR	0x43F90000
64 #define MX3X_UART2_BASE_ADDR	0x43F94000
65 #define MX3X_UART5_BASE_ADDR	0x43FB4000
66 #define MX51_UART1_BASE_ADDR	0x73fbc000
67 #define MX50_UART1_BASE_ADDR	0x53fbc000
68 #define MX53_UART1_BASE_ADDR	0x53fbc000
69 
__arch_decomp_setup(unsigned long arch_id)70 static __inline__ void __arch_decomp_setup(unsigned long arch_id)
71 {
72 	switch (arch_id) {
73 	case MACH_TYPE_MX1ADS:
74 	case MACH_TYPE_SCB9328:
75 		uart_base = MX1_UART1_BASE_ADDR;
76 		break;
77 	case MACH_TYPE_MX25_3DS:
78 		uart_base = MX25_UART1_BASE_ADDR;
79 		break;
80 	case MACH_TYPE_IMX27LITE:
81 	case MACH_TYPE_MX27_3DS:
82 	case MACH_TYPE_MX27ADS:
83 	case MACH_TYPE_PCM038:
84 	case MACH_TYPE_MX21ADS:
85 	case MACH_TYPE_PCA100:
86 	case MACH_TYPE_MXT_TD60:
87 	case MACH_TYPE_IMX27IPCAM:
88 		uart_base = MX2X_UART1_BASE_ADDR;
89 		break;
90 	case MACH_TYPE_MX31LITE:
91 	case MACH_TYPE_ARMADILLO5X0:
92 	case MACH_TYPE_MX31MOBOARD:
93 	case MACH_TYPE_QONG:
94 	case MACH_TYPE_MX31_3DS:
95 	case MACH_TYPE_PCM037:
96 	case MACH_TYPE_MX31ADS:
97 	case MACH_TYPE_MX35_3DS:
98 	case MACH_TYPE_PCM043:
99 	case MACH_TYPE_LILLY1131:
100 	case MACH_TYPE_VPR200:
101 		uart_base = MX3X_UART1_BASE_ADDR;
102 		break;
103 	case MACH_TYPE_MAGX_ZN5:
104 		uart_base = MX3X_UART2_BASE_ADDR;
105 		break;
106 	case MACH_TYPE_BUG:
107 		uart_base = MX3X_UART5_BASE_ADDR;
108 		break;
109 	case MACH_TYPE_MX51_BABBAGE:
110 	case MACH_TYPE_EUKREA_CPUIMX51SD:
111 	case MACH_TYPE_MX51_3DS:
112 		uart_base = MX51_UART1_BASE_ADDR;
113 		break;
114 	case MACH_TYPE_MX50_RDP:
115 		uart_base = MX50_UART1_BASE_ADDR;
116 		break;
117 	case MACH_TYPE_MX53_EVK:
118 	case MACH_TYPE_MX53_LOCO:
119 	case MACH_TYPE_MX53_SMD:
120 		uart_base = MX53_UART1_BASE_ADDR;
121 		break;
122 	default:
123 		break;
124 	}
125 }
126 
127 #define arch_decomp_setup()	__arch_decomp_setup(arch_id)
128 #define arch_decomp_wdog()
129 
130 #endif				/* __ASM_ARCH_MXC_UNCOMPRESS_H__ */
131