Rev 1780 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1780 | Rev 1784 | ||
---|---|---|---|
Line 36... | Line 36... | ||
36 | #include <arch/asm.h> |
36 | #include <arch/asm.h> |
37 | #include <stdarg.h> |
37 | #include <stdarg.h> |
38 | #include <cpu.h> |
38 | #include <cpu.h> |
39 | #include <arch/types.h> |
39 | #include <arch/types.h> |
40 | 40 | ||
41 | ofw_entry ofw; |
41 | uintptr_t ofw_cif; /**< OpenFirmware Client Interface address. */ |
42 | 42 | ||
43 | phandle ofw_chosen; |
43 | phandle ofw_chosen; |
44 | ihandle ofw_stdin; |
- | |
45 | ihandle ofw_stdout; |
44 | ihandle ofw_stdout; |
- | 45 | ihandle ofw_mmu; |
|
46 | 46 | ||
47 | void ofw_init(void) |
47 | void ofw_init(void) |
48 | { |
48 | { |
49 | ofw_chosen = ofw_find_device("/chosen"); |
49 | ofw_chosen = ofw_find_device("/chosen"); |
50 | if (ofw_chosen == -1) |
50 | if (ofw_chosen == -1) |
51 | ofw_done(); |
51 | ofw_done(); |
52 | 52 | ||
53 | if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
- | |
54 | ofw_stdin = 0; |
- | |
55 | - | ||
56 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
53 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
57 | ofw_stdout = 0; |
54 | ofw_stdout = 0; |
- | 55 | ||
- | 56 | if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) |
|
- | 57 | ofw_mmu = 0; |
|
58 | } |
58 | } |
59 | 59 | ||
60 | void ofw_done(void) |
60 | void ofw_done(void) |
61 | { |
61 | { |
62 | (void) ofw_call("exit", 0, 0); |
62 | (void) ofw_call("exit", 0, 1, NULL); |
63 | cpu_halt(); |
63 | cpu_halt(); |
64 | } |
64 | } |
65 | 65 | ||
- | 66 | /** Perform a call to OpenFirmware client interface. |
|
- | 67 | * |
|
- | 68 | * @param service String identifying the service requested. |
|
- | 69 | * @param nargs Number of input arguments. |
|
- | 70 | * @param nret Number of output arguments. This includes the return value. |
|
- | 71 | * @param rets Buffer for output arguments or NULL. The buffer must accomodate nret - 1 items. |
|
- | 72 | * |
|
- | 73 | * @return Return value returned by the client interface. |
|
- | 74 | */ |
|
66 | unative_t ofw_call(const char *service, const int nargs, const int nret, ...) |
75 | ofw_arg_t ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets, ...) |
67 | { |
76 | { |
68 | va_list list; |
77 | va_list list; |
69 | ofw_args_t args; |
78 | ofw_args_t args; |
70 | int i; |
79 | int i; |
71 | 80 | ||
72 | args.service = service; |
81 | args.service = service; |
73 | args.nargs = nargs; |
82 | args.nargs = nargs; |
74 | args.nret = nret; |
83 | args.nret = nret; |
75 | 84 | ||
76 | va_start(list, nret); |
85 | va_start(list, rets); |
77 | for (i = 0; i < nargs; i++) |
86 | for (i = 0; i < nargs; i++) |
78 | args.args[i] = va_arg(list, ofw_arg_t); |
87 | args.args[i] = va_arg(list, ofw_arg_t); |
79 | va_end(list); |
88 | va_end(list); |
80 | 89 | ||
81 | for (i = 0; i < nret; i++) |
90 | for (i = 0; i < nret; i++) |
82 | args.args[i + nargs] = 0; |
91 | args.args[i + nargs] = 0; |
83 | 92 | ||
84 | ofw(&args); |
93 | (void) ofw(&args); |
85 | 94 | ||
- | 95 | for (i = 1; i < nret; i++) |
|
- | 96 | rets[i - 1] = args.args[i + nargs]; |
|
- | 97 | ||
86 | return args.args[nargs]; |
98 | return args.args[nargs]; |
87 | } |
99 | } |
88 | 100 | ||
89 | void ofw_putchar(const char ch) |
101 | void ofw_putchar(const char ch) |
90 | { |
102 | { |
91 | if (ofw_stdout == 0) |
103 | if (ofw_stdout == 0) |
92 | return; |
104 | return; |
93 | 105 | ||
94 | (void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
106 | (void) ofw_call("write", 3, 1, NULL, ofw_stdout, &ch, 1); |
95 | } |
107 | } |
96 | 108 | ||
97 | /** Read character from OFW's input. |
- | |
98 | * |
- | |
99 | * This call is non-blocking. |
- | |
100 | * |
- | |
101 | * @return 0 if no character was read, character read otherwise. |
- | |
102 | */ |
- | |
103 | char ofw_getchar(void) |
109 | phandle ofw_find_device(const char *name) |
104 | { |
110 | { |
105 | char ch; |
- | |
106 | - | ||
107 | if (ofw_stdin == 0) |
- | |
108 | return 0; |
- | |
109 | - | ||
110 | if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
111 | return (phandle) ofw_call("finddevice", 1, 1, NULL, name); |
111 | return ch; |
- | |
112 | else |
- | |
113 | return 0; |
- | |
114 | } |
112 | } |
115 | 113 | ||
116 | phandle ofw_find_device(const char *name) |
114 | int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
117 | { |
115 | { |
118 | return (phandle) ofw_call("finddevice", 1, 1, name); |
116 | return (int) ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen); |
119 | } |
117 | } |
120 | 118 | ||
- | 119 | /** Translate virtual address to physical address using OpenFirmware. |
|
- | 120 | * |
|
- | 121 | * Use this function only when OpenFirmware is in charge. |
|
- | 122 | * |
|
- | 123 | * @param virt Virtual address. |
|
121 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
124 | * @return NULL on failure or physical address on success. |
- | 125 | */ |
|
- | 126 | void *ofw_translate(const void *virt) |
|
122 | { |
127 | { |
- | 128 | ofw_arg_t result[4]; |
|
- | 129 | int shift; |
|
- | 130 | ||
- | 131 | if (!ofw_mmu) |
|
- | 132 | return NULL; |
|
- | 133 | ||
123 | return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen); |
134 | if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) |
- | 135 | return NULL; |
|
- | 136 | ||
- | 137 | if (result[0] != -1) |
|
- | 138 | return NULL; |
|
- | 139 | ||
- | 140 | if (sizeof(unative_t) == 8) |
|
- | 141 | shift = 32; |
|
- | 142 | else |
|
- | 143 | shift = 0; |
|
- | 144 | ||
- | 145 | return (void *) ((result[2]<<shift)|result[3]); |
|
124 | } |
146 | } |
125 | 147 | ||
126 | void *ofw_claim(const void *addr, const int size, const int align) |
148 | void *ofw_claim(const void *addr, const int size, const int align) |
127 | { |
149 | { |
128 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
150 | return (void *) ofw_call("claim", 3, 1, NULL, addr, size, align); |
129 | } |
151 | } |
130 | 152 | ||
131 | /** @} |
153 | /** @} |
132 | */ |
154 | */ |