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| Line 27... | Line 27... | ||
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | #include "ofw.h" |
29 | #include "ofw.h" |
| 30 | #include "printf.h" |
30 | #include "printf.h" |
| 31 | 31 | ||
| - | 32 | #define MAX_OFW_ARGS 10 |
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| - | 33 | ||
| - | 34 | typedef unsigned int ofw_arg_t; |
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| - | 35 | typedef unsigned int ihandle; |
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| - | 36 | typedef unsigned int phandle; |
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| - | 37 | ||
| - | 38 | /** OpenFirmware command structure |
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| - | 39 | * |
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| - | 40 | */ |
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| - | 41 | typedef struct { |
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| - | 42 | const char *service; /**< Command name */ |
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| - | 43 | unsigned int nargs; /**< Number of in arguments */ |
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| - | 44 | unsigned int nret; /**< Number of out arguments */ |
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| - | 45 | ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */ |
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| - | 46 | } ofw_args_t; |
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| - | 47 | ||
| - | 48 | typedef void (*ofw_entry)(ofw_args_t *); |
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| - | 49 | ||
| - | 50 | ||
| 32 | ofw_entry ofw; |
51 | ofw_entry ofw; |
| 33 | 52 | ||
| 34 | phandle ofw_chosen; |
53 | phandle ofw_chosen; |
| 35 | ihandle ofw_mmu; |
54 | ihandle ofw_mmu; |
| 36 | ihandle ofw_stdout; |
55 | ihandle ofw_stdout; |
| 37 | 56 | ||
| 38 | 57 | ||
| 39 | void init(void) |
- | |
| 40 | { |
- | |
| 41 | ofw_chosen = ofw_find_device("/chosen"); |
- | |
| 42 | if (ofw_chosen == -1) |
- | |
| 43 | halt(); |
- | |
| 44 | - | ||
| 45 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
- | |
| 46 | ofw_stdout = 0; |
- | |
| 47 | - | ||
| 48 | ofw_mmu = ofw_open("/mmu"); |
- | |
| 49 | if (ofw_mmu == -1) { |
- | |
| 50 | puts("Unable to open /mmu node\n"); |
- | |
| 51 | halt(); |
- | |
| 52 | } |
- | |
| 53 | } |
- | |
| 54 | - | ||
| 55 | void halt(void) |
- | |
| 56 | { |
- | |
| 57 | ofw_call("exit", 0, 0); |
- | |
| 58 | } |
- | |
| 59 | - | ||
| 60 | - | ||
| 61 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
58 | static int ofw_call(const char *service, const int nargs, const int nret, ...) |
| 62 | { |
59 | { |
| 63 | va_list list; |
60 | va_list list; |
| 64 | ofw_args_t args; |
61 | ofw_args_t args; |
| 65 | int i; |
62 | int i; |
| 66 | 63 | ||
| Line 80... | Line 77... | ||
| 80 | 77 | ||
| 81 | return args.args[nargs]; |
78 | return args.args[nargs]; |
| 82 | } |
79 | } |
| 83 | 80 | ||
| 84 | 81 | ||
| - | 82 | static phandle ofw_find_device(const char *name) |
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| - | 83 | { |
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| - | 84 | return ofw_call("finddevice", 1, 1, name); |
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| - | 85 | } |
|
| - | 86 | ||
| - | 87 | ||
| - | 88 | static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
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| - | 89 | { |
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| - | 90 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
|
| - | 91 | } |
|
| - | 92 | ||
| 85 | ihandle ofw_open(const char *name) |
93 | static ihandle ofw_open(const char *name) |
| 86 | { |
94 | { |
| 87 | return ofw_call("open", 1, 1, name); |
95 | return ofw_call("open", 1, 1, name); |
| 88 | } |
96 | } |
| 89 | 97 | ||
| 90 | 98 | ||
| 91 | void ofw_write(const char *str, const int len) |
99 | void init(void) |
| 92 | { |
100 | { |
| - | 101 | ofw_chosen = ofw_find_device("/chosen"); |
|
| 93 | if (ofw_stdout == 0) |
102 | if (ofw_chosen == -1) |
| 94 | return; |
103 | halt(); |
| 95 | 104 | ||
| 96 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
105 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
| - | 106 | ofw_stdout = 0; |
|
| - | 107 | ||
| - | 108 | ofw_mmu = ofw_open("/mmu"); |
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| - | 109 | if (ofw_mmu == -1) { |
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| - | 110 | puts("Unable to open /mmu node\n"); |
|
| - | 111 | halt(); |
|
| - | 112 | } |
|
| 97 | } |
113 | } |
| 98 | 114 | ||
| 99 | 115 | ||
| 100 | phandle ofw_find_device(const char *name) |
116 | void halt(void) |
| 101 | { |
117 | { |
| 102 | return ofw_call("finddevice", 1, 1, name); |
118 | ofw_call("exit", 0, 0); |
| 103 | } |
119 | } |
| 104 | 120 | ||
| 105 | 121 | ||
| 106 | int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
122 | void ofw_write(const char *str, const int len) |
| 107 | { |
123 | { |
| - | 124 | if (ofw_stdout == 0) |
|
| - | 125 | return; |
|
| - | 126 | ||
| 108 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
127 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
| 109 | } |
128 | } |
| 110 | 129 | ||
| 111 | 130 | ||
| 112 | void *ofw_translate(const void *virt) |
131 | void *ofw_translate(const void *virt) |
| 113 | { |
132 | { |
| Line 117... | Line 136... | ||
| 117 | 136 | ||
| 118 | int ofw_map(const void *phys, const void *virt, const int size, const int mode) |
137 | int ofw_map(const void *phys, const void *virt, const int size, const int mode) |
| 119 | { |
138 | { |
| 120 | return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys); |
139 | return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys); |
| 121 | } |
140 | } |
| - | 141 | ||
| - | 142 | ||
| - | 143 | int ofw_memmap(memmap_t *map) |
|
| - | 144 | { |
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| - | 145 | int i; |
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| - | 146 | int ret; |
|
| - | 147 | ||
| - | 148 | phandle handle = ofw_find_device("/memory"); |
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| - | 149 | if (handle == -1) |
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| - | 150 | return false; |
|
| - | 151 | ||
| - | 152 | ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones)); |
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| - | 153 | if (ret == -1) |
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| - | 154 | return false; |
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| - | 155 | ||
| - | 156 | map->total = 0; |
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| - | 157 | map->count = 0; |
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| - | 158 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
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| - | 159 | if (map->zones[i].size == 0) |
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| - | 160 | break; |
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| - | 161 | map->count++; |
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| - | 162 | map->total += map->zones[i].size; |
|
| - | 163 | } |
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| - | 164 | } |
|