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| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| - | 35 | #include <arch/cpu_family.h> |
|
| 35 | #include <cpu.h> |
36 | #include <cpu.h> |
| 36 | #include <arch.h> |
37 | #include <arch.h> |
| 37 | #include <genarch/ofw/ofw_tree.h> |
38 | #include <genarch/ofw/ofw_tree.h> |
| 38 | #include <arch/drivers/tick.h> |
39 | #include <arch/drivers/tick.h> |
| 39 | #include <print.h> |
40 | #include <print.h> |
| 40 | #include <arch/cpu_node.h> |
41 | #include <arch/cpu_node.h> |
| 41 | 42 | ||
| - | 43 | /** |
|
| - | 44 | * Finds out the clock frequency of the current CPU. |
|
| - | 45 | * |
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| - | 46 | * @param node node representing the current CPU in the OFW tree |
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| - | 47 | * @return clock frequency if "node" is the current CPU and no error |
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| - | 48 | * occurs, -1 if "node" is not the current CPU or on error |
|
| - | 49 | */ |
|
| - | 50 | static int find_cpu_frequency(ofw_tree_node_t *node) |
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| - | 51 | { |
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| - | 52 | ofw_tree_property_t *prop; |
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| - | 53 | uint32_t mid; |
|
| - | 54 | ||
| - | 55 | /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */ |
|
| - | 56 | prop = ofw_tree_getprop(node, "upa-portid"); |
|
| - | 57 | if ((!prop) || (!prop->value)) |
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| - | 58 | prop = ofw_tree_getprop(node, "portid"); |
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| - | 59 | if ((!prop) || (!prop->value)) |
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| - | 60 | prop = ofw_tree_getprop(node, "cpuid"); |
|
| - | 61 | ||
| - | 62 | if (prop && prop->value) { |
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| - | 63 | mid = *((uint32_t *) prop->value); |
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| - | 64 | if (mid == CPU->arch.mid) { |
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| - | 65 | prop = ofw_tree_getprop(node, "clock-frequency"); |
|
| - | 66 | if (prop && prop->value) { |
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| - | 67 | return *((uint32_t *) prop->value); |
|
| - | 68 | } |
|
| - | 69 | } |
|
| - | 70 | } |
|
| - | 71 | ||
| - | 72 | return -1; |
|
| - | 73 | } |
|
| - | 74 | ||
| 42 | /** Perform sparc64 specific initialization of the processor structure for the |
75 | /** Perform sparc64 specific initialization of the processor structure for the |
| 43 | * current processor. |
76 | * current processor. |
| 44 | */ |
77 | */ |
| 45 | void cpu_arch_init(void) |
78 | void cpu_arch_init(void) |
| 46 | { |
79 | { |
| 47 | ofw_tree_node_t *node; |
80 | ofw_tree_node_t *node; |
| 48 | uint32_t mid; |
- | |
| 49 | uint32_t clock_frequency = 0; |
81 | uint32_t clock_frequency = 0; |
| 50 | icbus_config_t icbus_config; |
82 | icbus_config_t icbus_config; |
| 51 | 83 | ||
| 52 | icbus_config.value = icbus_config_read(); |
84 | icbus_config.value = icbus_config_read(); |
| 53 | CPU->arch.mid = icbus_config.mid; |
85 | CPU->arch.mid = icbus_config.mid; |
| 54 | 86 | ||
| 55 | /* |
87 | /* |
| 56 | * Detect processor frequency. |
88 | * Detect processor frequency. |
| 57 | */ |
89 | */ |
| - | 90 | if (is_us() || is_us_iii()) { |
|
| 58 | node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu"); |
91 | node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu"); |
| 59 | while (node) { |
92 | while (node) { |
| - | 93 | int f = find_cpu_frequency(node); |
|
| - | 94 | if (f != -1) |
|
| 60 | ofw_tree_property_t *prop; |
95 | clock_frequency = (uint32_t) f; |
| - | 96 | node = ofw_tree_find_peer_by_device_type(node, "cpu"); |
|
| 61 | 97 | } |
|
| - | 98 | } else if (is_us_iv()) { |
|
| 62 | prop = ofw_tree_getprop(node, PORTID_NAME); |
99 | node = ofw_tree_find_child(cpus_parent(), "cmp"); |
| 63 | if (prop && prop->value) { |
100 | while (node) { |
| - | 101 | int f; |
|
| 64 | mid = *((uint32_t *) prop->value); |
102 | f = find_cpu_frequency(ofw_tree_find_child(node, "cpu@0")); |
| 65 | if (mid == CPU->arch.mid) { |
103 | if (f != -1) |
| 66 | prop = ofw_tree_getprop(node, |
104 | clock_frequency = (uint32_t) f; |
| 67 | "clock-frequency"); |
105 | f = find_cpu_frequency(ofw_tree_find_child(node, "cpu@1")); |
| 68 | if (prop && prop->value) |
106 | if (f != -1) |
| 69 | clock_frequency = *((uint32_t *) |
107 | clock_frequency = (uint32_t) f; |
| 70 | prop->value); |
108 | node = ofw_tree_find_peer_by_name(node, "cmp"); |
| 71 | } |
- | |
| 72 | } |
109 | } |
| 73 | node = ofw_tree_find_peer_by_device_type(node, "cpu"); |
- | |
| 74 | } |
110 | } |
| 75 | 111 | ||
| 76 | CPU->arch.clock_frequency = clock_frequency; |
112 | CPU->arch.clock_frequency = clock_frequency; |
| 77 | tick_init(); |
113 | tick_init(); |
| 78 | } |
114 | } |
| 79 | 115 | ||
| 80 | /** Read version information from the current processor. */ |
116 | /** Read version information from the current processor. */ |