projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 9918cda5 UKK |
1 | /* |
| 2 | * include/asm-arm/arch-ns9xxx/uncompress.h | |
| 3 | * | |
| 4 | * Copyright (C) 2006 by Digi International Inc. | |
| 5 | * All rights reserved. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify it | |
| 8 | * under the terms of the GNU General Public License version 2 as published by | |
| 9 | * the Free Software Foundation. | |
| 10 | */ | |
| 11 | #ifndef __ASM_ARCH_UNCOMPRESS_H | |
| 12 | #define __ASM_ARCH_UNCOMPRESS_H | |
| 13 | ||
| a287453e UKK |
14 | #include <asm/io.h> |
| 15 | ||
| 16 | #define __REG(x) ((void __iomem __force *)(x)) | |
| 17 | ||
| 18 | static void putc_dummy(char c, void __iomem *base) | |
| 9918cda5 | 19 | { |
| a287453e UKK |
20 | /* nothing */ |
| 21 | } | |
| 9918cda5 | 22 | |
| a287453e UKK |
23 | static void putc_ns9360(char c, void __iomem *base) |
| 24 | { | |
| 25 | static int t = 0x10000; | |
| 26 | do { | |
| 27 | if (t) | |
| 28 | --t; | |
| 29 | ||
| 30 | if (__raw_readl(base + 8) & (1 << 3)) { | |
| 31 | __raw_writeb(c, base + 16); | |
| 32 | t = 0x10000; | |
| 33 | break; | |
| 34 | } | |
| 35 | } while (t); | |
| 36 | } | |
| 37 | ||
| 38 | static void putc_a9m9750dev(char c, void __iomem *base) | |
| 39 | { | |
| 40 | static int t = 0x10000; | |
| 41 | do { | |
| 42 | if (t) | |
| 43 | --t; | |
| 44 | ||
| 45 | if (__raw_readb(base + 5) & (1 << 5)) { | |
| 46 | __raw_writeb(c, base); | |
| 47 | t = 0x10000; | |
| 48 | break; | |
| 49 | } | |
| 50 | } while (t); | |
| 51 | ||
| 52 | } | |
| 53 | ||
| 54 | static void putc_ns921x(char c, void __iomem *base) | |
| 55 | { | |
| 56 | static int t = 0x10000; | |
| 9918cda5 | 57 | do { |
| a287453e UKK |
58 | if (t) |
| 59 | --t; | |
| 60 | ||
| 61 | if (!(__raw_readl(base) & (1 << 11))) { | |
| 62 | __raw_writeb(c, base + 0x0028); | |
| 63 | t = 0x10000; | |
| 9918cda5 UKK |
64 | break; |
| 65 | } | |
| a287453e | 66 | } while (t); |
| 9918cda5 UKK |
67 | } |
| 68 | ||
| a287453e UKK |
69 | #define MSCS __REG(0xA0900184) |
| 70 | ||
| 71 | #define NS9360_UARTA __REG(0x90200040) | |
| 72 | #define NS9360_UARTB __REG(0x90200000) | |
| 73 | #define NS9360_UARTC __REG(0x90300000) | |
| 74 | #define NS9360_UARTD __REG(0x90300040) | |
| 75 | ||
| 76 | #define NS9360_UART_ENABLED(base) \ | |
| 77 | (__raw_readl(NS9360_UARTA) & (1 << 31)) | |
| 78 | ||
| 79 | #define A9M9750DEV_UARTA __REG(0x40000000) | |
| 80 | ||
| 81 | #define NS921XSYS_CLOCK __REG(0xa090017c) | |
| 82 | #define NS921X_UARTA __REG(0x90010000) | |
| 83 | #define NS921X_UARTB __REG(0x90018000) | |
| 84 | #define NS921X_UARTC __REG(0x90020000) | |
| 85 | #define NS921X_UARTD __REG(0x90028000) | |
| 86 | ||
| 87 | #define NS921X_UART_ENABLED(base) \ | |
| 88 | (__raw_readl((base) + 0x1000) & (1 << 29)) | |
| 89 | ||
| 90 | static void autodetect(void (**putc)(char, void __iomem *), void __iomem **base) | |
| 91 | { | |
| 92 | if (((__raw_readl(MSCS) >> 16) & 0xfe) == 0x00) { | |
| 93 | /* ns9360 or ns9750 */ | |
| 94 | if (NS9360_UART_ENABLED(NS9360_UARTA)) { | |
| 95 | *putc = putc_ns9360; | |
| 96 | *base = NS9360_UARTA; | |
| 97 | return; | |
| 98 | } else if (NS9360_UART_ENABLED(NS9360_UARTB)) { | |
| 99 | *putc = putc_ns9360; | |
| 100 | *base = NS9360_UARTB; | |
| 101 | return; | |
| 102 | } else if (NS9360_UART_ENABLED(NS9360_UARTC)) { | |
| 103 | *putc = putc_ns9360; | |
| 104 | *base = NS9360_UARTC; | |
| 105 | return; | |
| 106 | } else if (NS9360_UART_ENABLED(NS9360_UARTD)) { | |
| 107 | *putc = putc_ns9360; | |
| 108 | *base = NS9360_UARTD; | |
| 109 | return; | |
| 110 | } else if (__raw_readl(__REG(0xa09001f4)) == 0xfffff001) { | |
| 111 | *putc = putc_a9m9750dev; | |
| 112 | *base = A9M9750DEV_UARTA; | |
| 113 | return; | |
| 114 | } | |
| 115 | } else if (((__raw_readl(MSCS) >> 16) & 0xfe) == 0x02) { | |
| 116 | /* ns921x */ | |
| 117 | u32 clock = __raw_readl(NS921XSYS_CLOCK); | |
| 118 | ||
| 119 | if ((clock & (1 << 1)) && | |
| 120 | NS921X_UART_ENABLED(NS921X_UARTA)) { | |
| 121 | *putc = putc_ns921x; | |
| 122 | *base = NS921X_UARTA; | |
| 123 | return; | |
| 124 | } else if ((clock & (1 << 2)) && | |
| 125 | NS921X_UART_ENABLED(NS921X_UARTB)) { | |
| 126 | *putc = putc_ns921x; | |
| 127 | *base = NS921X_UARTB; | |
| 128 | return; | |
| 129 | } else if ((clock & (1 << 3)) && | |
| 130 | NS921X_UART_ENABLED(NS921X_UARTC)) { | |
| 131 | *putc = putc_ns921x; | |
| 132 | *base = NS921X_UARTC; | |
| 133 | return; | |
| 134 | } else if ((clock & (1 << 4)) && | |
| 135 | NS921X_UART_ENABLED(NS921X_UARTD)) { | |
| 136 | *putc = putc_ns921x; | |
| 137 | *base = NS921X_UARTD; | |
| 138 | return; | |
| 139 | } | |
| 140 | } | |
| 141 | ||
| 142 | *putc = putc_dummy; | |
| 143 | } | |
| 144 | ||
| 145 | void (*myputc)(char, void __iomem *); | |
| 146 | void __iomem *base; | |
| 147 | ||
| 148 | static void putc(char c) | |
| 149 | { | |
| 150 | myputc(c, base); | |
| 151 | } | |
| 152 | ||
| 153 | static void arch_decomp_setup(void) | |
| 154 | { | |
| 155 | autodetect(&myputc, &base); | |
| 156 | } | |
| 9918cda5 UKK |
157 | #define arch_decomp_wdog() |
| 158 | ||
| 159 | static void flush(void) | |
| 160 | { | |
| 161 | /* nothing */ | |
| 162 | } | |
| 163 | ||
| 164 | #endif /* ifndef __ASM_ARCH_UNCOMPRESS_H */ |